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Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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30-08-2017 дата публикации

Оптический измеритель давления

Номер: RU0000173567U1
Автор: Вячеслав Александрович Швец, Григорий Иванович Долгих, Сергей Владимирович Яковенко
Принадлежит: Федеральное государственное автономное образовательное учреждение высшего образования "Дальневосточный федеральный университет" (ДВФУ)

Полезная модель относится к области измерительной техники и касается оптического измерителя давления. Оптический измеритель давления включает в себя источник лазерного излучения, коллиматор, снабженный светоотражающим покрытием чувствительный элемент, светоделитель, фотодетектор, неподвижный отражатель, пьезокерамический узел и систему регистрации. Неподвижный отражатель выполнен с возможностью взаимодействия с пьезокерамическим узлом, сообщенным с выходами системы регистрации. Светоделитель выполнен в виде делительного куба, в объеме которого выполнена грань для разделения лучей, ориентированная под углом к оптической оси коллиматора. Технический результат заключается в повышение продолжительности бесперебойной работы устройства. 1 з.п. ф-лы, 1 ил. Ц 1 173567 ко РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (11) 47а ва ВО те м: Цл (50) МПК СОГ. 2306 (2006.01) СО. 11/02 (2006.01) (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21)(22) Заявка: 2016150964, 26.12.2016 (24) Дата начала отсчета срока действия патента: 26.12.2016 Дата регистрации: 30.08.2017 Приоритет(ы): (22) Дата подачи заявки: 26.12.2016 (45) Опубликовано: 30.08.2017 Бюл. № 25 Адрес для переписки: 690950, Приморский край, г. Владивосток, ул. Суханова, 8, отдел интеллектуальной собственности ДВФУ (72) Автор(ы): Долгих Григорий Иванович (КП), ШВвец Вячеслав Александрович (КО), Яковенко Сергей Владимирович (КП) (73) Патентообладатель(и): Федеральное государственное автономное образовательное учреждение высшего образования "Дальневосточный федеральный университет" (ДВФУ) (КП) (56) Список документов, цитированных в отчете о поиске: КО 45528 01, 10.05.2005. 0$ 2008273192 А1, 06.11.2008. 05 5301010 АТ, 05.04.1994. ВО 71163 91, 27.02.2008. (54) Оптический измеритель давления (57) Реферат: Полезная модель относится к области измерительной техники и касается оптического измерителя давления. Оптический измеритель давления включает в себя источник лазерного излучения, коллиматор, ...

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Номер записи: 1
18-09-2018 дата публикации

Многофункциональный измеритель воздушных данных

Номер: RU0000183334U1
Автор: Александр Александрович Никольский, Алексей Александрович Кошелев, Андрей Александрович Ефремов, Андрей Викторович Вялков, Владимир Александрович Подобедов, Владимир Алексеевич Головкин, Вячеслав Николаевич Дятлов, Дмитрий Львович Крылов, Евгения Михайловна Бакрылова, Константин Федорович Попович, Михаил Алексеевич Головкин, Михаил Юрьевич Сорокин, Олег Анатольевич Гуляев
Принадлежит: Акционерное общество "Аэроприбор - Восход"

Заявляемый в качестве полезной модели многофункциональный измеритель воздушных данных относится к измерительной технике и может быть использован для измерения высотно-скоростных параметров и аэродинамических углов в системах воздушных сигналов летательных аппаратов. Техническим результатом является уменьшение погрешности измерения высотно-скоростных параметров, значительное снижение массы многофункционального измерителя воздушных данных, в первую очередь, за счет исключения пневмотрасс, расположенных между приемником воздушных давлений и узлом датчиков давления. Сущность полезной модели заключается в том, что многофункциональный измеритель воздушных данных содержит приемник воздушных давлений, датчики давлений, вычислитель. Причем датчики объединены в единый корпус датчиков давлений, соединенный с приемником воздушных давлений и вычислителем. Также содержит дополнительный вычислитель высотно-скоростных параметров, соединенный с выходом узла датчиков давлений, и узел контроля обогрева, соединенный с приемником воздушных давлений и вычислителями. Предлагаемый многофункциональный измеритель воздушных данных позволяет уменьшить погрешность измерения аэродинамического угла до значений порядка 0,25° от первоначальных величин порядка 1-1,5°. Также позволяет уменьшить на 20-30% динамическую погрешность измерения высотно-скоростных параметров и на 15-30% уменьшить массу канала измерения высотно-скоростных параметров за счет исключения пневмотрасс. При этом заявляемый в качестве полезной модели многофункциональный измеритель воздушных данных позволяет повысить на 10-40% эффективность электрообогрева. 1 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 183 334 U1 (51) МПК G01L 11/00 (2006.01) G01P 13/02 (2006.01) G01P 5/165 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК G01L 11/00 (2018.05); G01P 13/02 (2018.05); G01P 5/165 (2018.05) (21)(22) Заявка: 2018115924, 27.04.2018 (24) Дата начала отсчета срока действия патента ...

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Номер записи: 2
26-09-2019 дата публикации

Многоканальный анализатор сигналов волоконно-оптических датчиков на основе волоконных брэгговских решеток

Номер: RU0000192705U1
Автор: Андрей Алексеевич Оглезнев, Виктор Александрович Симонов, Иван Сергеевич Шелемба
Принадлежит: Общество с ограниченной ответственностью "Инверсия-Сенсор" (ООО "Инверсия-С")

Полезная модель относится к области измерительной техники и может быть использована для измерения спектральных характеристик и показаний с волоконно-оптических датчиков, в частности в тепловой и ядерной энергетике, в химической и нефтегазовой, а также в критических узлах других отраслей промышленности.Техническим результатом настоящего технического решения является повышение точности определения относительного смещения спектра отражения брэгговской решетки, возможность определения абсолютной длины волны отражения ВБР, а также нечувствительность к спектральным потерям в линии и приемной части.Разработан анализатор сигналов, включающий перестраиваемый (на 80 нм) источник оптического излучения, средства передачи света, датчик на основе 8 линий волоконных брегговских решеток (ВБР), интерферометр и процессор. Брэгговские длины волн ВБР каждой линии различаются на постоянную величину, т.е. λ-λ=const. Средства передачи света обеспечивают направление света от источника излучения к ВБР-датчикам, а отраженное от ВБР-датчиков излучение на интерферометр, подключенный через фотоприемники к процессору, который управляет процессами перестройки источника переключением оптических переключателей в составе средств передачи света и детектора и обрабатывает сигналы с фотоприемников, сопоставляя их с калибровочными данными, выдает значение текущей длины волны отражения каждого из ВБР-датчиков в линии (линиях).Интегрально-оптическое исполнение элементов: источника, средств передачи света: ответвителя, делителя, спектрально-селективного ответвителя, коммутатора и интерферометра Маха-Цандера позволяет получить малогабаритный прибор с высокой вибростойкостью и температурной стабильностью. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 192 705 U1 (51) МПК G01M 11/00 (2006.01) G01N 21/17 (2006.01) G01D 5/353 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК G01L 11/02 (2019.08); G01N 21/17 (2019.08); G01D 5/35329 (2019.08) (21)(22) Заявка: ...

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Номер записи: 3
26-04-2012 дата публикации

Optical probe containing oxygen, temperature, and pressure sensors and monitoring and control systems containing the same

Номер: US20120097270A1
Автор: Kenneth Susko
Принадлежит: Individual

A probe for measuring oxygen, temperature, and pressure having a housing, made of a thermally conductive material; an oxygen sensor within the housing, a temperature sensor disposed within the housing adjacent to the thermally conductive material, comprising a fiber Bragg grating, a pressure sensor disposed within the housing, comprising a fiber Bragg grating.

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Номер записи: 4
06-09-2012 дата публикации

Optic fibres and fibre optic sensing

Номер: US20120222487A1
Автор: David John Hill, Magnus Mcewen-King, Roger Ian Crickmore
Принадлежит: Optasense Holdings Ltd

Fibre optic cables with improved performance for use in distributed sensing, for instance in distributed acoustic sensors, are disclosed. In one embodiment a fibre optic cable ( 210 ) comprises a core ( 208 ) and cladding ( 206 ) disposed within a buffer material ( 202 ) and surrounded by a jacket ( 204 ) and arranged so that the core is offset from the centre of the cable. By offsetting the core from the centre of the jacket any bending effects on the core can be maximised compared with the core being located at the centre of the cable.

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Номер записи: 5
20-09-2012 дата публикации

Measurement instrument and method

Номер: US20120239307A1
Автор: Michael Borenstein
Принадлежит: Michael Borenstein

A measurement instrument having a processor, a first sensor and a second sensor. The processor is adapted to output a measurement signal embodying a measurement of a physical quantity. The first sensor and second sensor are connected to the processor and are operable to generate respectively first and second measurements of the physical quantity. The processor defines a first measurement range within which the measurement signal is dependent on the first measurement and not the second measurement. The processor defines a second measurement range within which the measurement signal is dependent on the second measurement and not the first measurement. The first and second ranges meet at a predetermined transition. The first and second measurements are different at the transition and the measurement embodied in the measurement signal crosses the transition without an abrupt change.

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Номер записи: 6
20-06-2013 дата публикации

PRESSURE SENSOR

Номер: US20130152693A1
Автор: Fujii Kenji, FUJITA KOUMEI, TAKEKAWA ATSUO
Принадлежит: Panasonic Corporation

A pressure sensor includes a case, a vibrator, a detector, and a processor. The case includes a tubular section and a flat section. The tubular section has a hollow having an opening and is configured to be filled with a target fluid. The flat section closes the hollow. The flat section has a first surface facing the hollow, and a second surface opposite to the first surface. The vibrator is disposed on the second surface of the flat section of the case. The detector outputs a signal according to a vibration of the vibrator. The processor is operable to detect a frequency of the vibration of the vibrator based on the signal output from the detector, and to detect a pressure of the target fluid based on the detected frequency of the vibrator. This pressure sensor has a high sensitivity and excellent characteristics. 1. A pressure sensor configured to detect a pressure of a target fluid , the pressure sensor comprising: a tubular section having a hollow having an opening, the hollow being configured to be filled with the target fluid;', 'a flat section closing the hollow, the flat section having a first surface and a second surface opposite to the first surface, the first surface of the flat section facing the hollow;, 'a case including'}a first vibrator disposed on the second surface of the flat section of the case;a first driver disposed at the first vibrator;a first detector disposed at the first vibrator for outputting a signal according to a vibration of the first vibrator; and input a drive signal to the first driver as to vibrate the first vibrator,', 'detect a frequency of the vibration of the first vibrator based on the signal output from the first detector, and', 'detect a pressure of the target fluid based on the detected frequency of the first vibrator., 'a processor operable to'}2. The pressure sensor of further comprising:a second vibrator;a second driver disposed at the second vibrator; anda second detector disposed at the second vibrator for outputting ...

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Номер записи: 7
20-06-2013 дата публикации

Pressure detection device

Номер: US20130158896A1
Автор: Liviu Schintee
Принадлежит: Custom Fluidpower Pty Ltd

A pressure testing device for calculating a pressure in a flexible line comprises a housing unit, a force sensor mounted on the housing unit and a clamp assembly having a clamp mounted on the housing unit. The clamp is operable to compress the flexible line against the force sensor by a predetermined degree of deformation of the flexible line. The device includes a displacement sensor adapted to measure a displacement of the clamp. The device also includes a controller having a processor in communication with the force sensor and the displacement sensor, and a memory unit containing stored data. At the predetermined degree of deformation of the flexible line, the processor compares a first signal from the force sensor and a second signal from the displacement senor with the stored data to estimate the pressure within the flexible line.

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Номер записи: 8
29-08-2013 дата публикации

Combined environmental parameter sensor

Номер: US20130219994A1
Автор: Andrew D. McNeil, Dubravka Bilic
Принадлежит: Individual

A combination sensor and corresponding method of measuring a plurality of environmental parameters uses a pressure sensor disposed on an integrated circuit die; a humidity sensor disposed on the integrated circuit die; and a circuit coupled to and shared by the pressure sensor and the humidity sensor to facilitate pressure and humidity sensing

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Номер записи: 9
29-08-2013 дата публикации

Modified Fluorescent Protein

Номер: US20130220021A1
Автор: Watanabe Tomonobu, Yoshizawa Keiko
Принадлежит: JAPAN SCIENCE AND TECHNOLOGY AGENCY

Provided is a modified fluorescent protein which enables the detection of a power applied to a liquid where the fluorescent protein exists. A modified fluorescent protein, wherein a peptide linker is inserted into a position homologous to the position between the 144th and 145th amino acids in the amino acid sequence of a wild type fluorescent protein from jellyfish or a fluorescent protein derived from said wild type fluorescent protein, characterized in that the fluorescence properties of said modified fluorescent protein change depending on a change in a pressure that is applied to a liquid where said modified fluorescent protein exists. 110-. (canceled)11. A method of detecting a pressure or a change in pressure applied to a liquid in which a modified fluorescent protein or a fusion fluorescent protein exists , comprising:detecting fluorescent intensity of the modified fluorescent protein or the fusion fluorescent protein,wherein the modified fluorescent protein is a modified fluorescent protein comprising a peptide linker inserted into a position homologous to a position between 144th and 145th amino acids in an amino acid sequence of a wild type fluorescent protein isolated from jellyfish or a fluorescent protein derived from the wild type fluorescent protein, wherein fluorescent intensity of the modified fluorescent protein changes depending on a change in pressure applied to a liquid in which the modified fluorescent protein exists,wherein the fusion fluorescent protein is a fusion fluorescent protein in which the modified fluorescent protein is fused with a fluorescent protein having an excitation spectrum different from an excitation spectrum of the modified fluorescent protein, andwherein the wild type fluorescent protein is a green fluorescent protein (GFP) of 238 (full-length) amino acid residues.12. The method according to claim 11 , wherein the peptide linker comprises one to three amino acids.13. The method according to claim 11 , wherein the amino ...

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Номер записи: 10
26-09-2013 дата публикации

Pressure detection system for a pressure cooker

Номер: US20130249698A1
Автор: Folkhart Fissler
Принадлежит: FISSLER GMBH

The invention describes a pressure detection system for a pressure cooker, having a sensor ( 17 ) for detecting a pressure prevailing inside the pressure cooker by means of measured values, a computer unit ( 16 ) connected to the sensor ( 17 ), and a display ( 3, 4 ), wherein the computer unit ( 16 ) is designed to evaluate the measured values supplied by the sensor ( 17 ) and to establish whether at least one first threshold value (S 1 ) has been reached. In order to indicate use-related wear, the computer unit ( 16 ) is further designed to continue a counter when the measured value reaches the first threshold value (S 1 ) and to output a notification on the display ( 3, 4 ) when a predefined value of the counter is reached.

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Номер записи: 11
03-10-2013 дата публикации

Torque detection device, and electric power steering system including the torque detection device

Номер: US20130255401A1
Автор: Yutaro ISHIMOTO
Принадлежит: JTEKT Corp

A torque detection device includes a yoke unit. The yoke unit includes a first magnetic yoke and a second magnetic yoke. The first magnetic yoke and the second magnetic yoke each are formed of a strip-shaped soft magnetic plate. The first magnetic yoke has yoke proximity portions and yoke distant portions that are formed by bending the soft magnetic plate. The second magnetic yoke has yoke proximity portions and yoke distant portion that are formed by bending the soft magnetic plate. The distance between each of the yoke proximity portions and a permanent magnet is shorter than the distance between each of the yoke distant portions and the permanent magnet.

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Номер записи: 12
09-01-2014 дата публикации

Sensor Device For Use in a Medical Fluid Delivery System

Номер: US20140007694A1
Автор: Geipel Andreas, Grossenbacher Pascal, Haueter Ulrich, Michel Philipp
Принадлежит: ROCHE DIAGNOSTICS INTERNATIONAL AG

A sensor device for use in a medical fluid delivery system, or an infusion pump device, comprises a fluidic chamber with a deformable cover closing at least an area of the chamber and an optical detection system comprising at least one light emitter for emitting one or more incident light beams and a sensor unit for monitoring one or more reflected light beams is presented. In a pressurized state of the fluidic chamber, the deformable cover is deformed such that it forms an inflexion point area within the deformed cover. The one or more incident light beams emitted by the light emitter are directed on the cover such that the one or more incident light beams are reflected essentially in the inflexion point area. 1. A sensor device for use in a medical fluid delivery system , the sensor device comprising:a fluidic chamber with a deformable cover closing at least an area of the fluidic chamber, wherein, in a pressurized state of the fluidic chamber, the deformable cover is deformed such that it forms an inflexion point area within the deformed cover; andan optical detection system comprising at least one light emitter for emitting one or more incident light beams and a sensor unit for monitoring one or more reflected light beams, wherein the one or more incident light beams emitted by the light emitter are directed on the cover such that the one or more incident light beams are reflected in the inflexion point area.2. The sensor device according to claim 1 , wherein the one or more incident light beams are directed on the cover at an angle α.3. The sensor device according to claim 1 , wherein the light emitter of the sensor device is located on a side of the cover which is curved in a convex manner in an increased pressure state of the fluidic chamber.4. The sensor device according to claim 3 , wherein one side of the cover is in fluid contact and the light emitter is located on the other side of the cover.5. The sensor device according to claim 1 , wherein the ...

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Номер записи: 13
27-02-2014 дата публикации

SENSING CABLE

Номер: US20140056553A1
Автор: Cignarale Joe, Hashimoto Yoshio, HERBST Brian, Miyamoto Matsuhiro, STRATTON Craig, Villiger Brett
Принадлежит: AFL TELECOMMUNICATIONS LLC

A sensing cable is provided which includes exposed and/or unexposed optical fibers or wires disposed through the length of the sensing cable. The sensing cable includes a slotted core which is a one-piece integral member having a plurality of channels formed on a perimeter of the slotted core and which extend along a length of the slotted core. The sensing cable includes at least one exposed component which is disposed in a first channel of the plurality of channels and which extends along a length of the first channel. The sensing cable includes at least one unexposed component which is encased by a protective member, and the unexposed component and the protective member are disposed in a second channel of the plurality of channels. The unexposed component and the protective member extend along a length of the second channel. 1. A sensing cable comprising:a slotted core which is a one-piece integral member comprising a plurality of channels formed on a perimeter of the slotted core, wherein the plurality of channels extend along a length of the slotted core.2. The sensing cable of claim 1 , wherein the plurality of channels extend along the length of the slotted core in an arrangement parallel to a longitudinal axis of the slotted core.3. The sensing cable of claim 1 , wherein the plurality of channels extend along the length of the slotted core in a helical arrangement.4. The sensing cable of claim 1 , further comprising a protective layer which encases the slotted core.5. The sensing cable of claim 1 , further comprising an exposed component which is disposed in a first channel of the plurality of channels claim 1 , wherein the exposed component extends along a length of the first channel.6. The sensing cable of claim 5 , further comprising an unexposed component which is encased by a protective member claim 5 , and the unexposed component and the protective member are disposed in a second channel of the plurality of channels claim 5 , wherein the unexposed ...

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Номер записи: 14
20-03-2014 дата публикации

MEASUREMENT INSTRUMENT AND METHOD

Номер: US20140081581A1
Автор: Borenstein Michael
Принадлежит: Brooks Automation Inc.

A measurement instrument having a processor, a first sensor and a second sensor. The processor is adapted to output a measurement signal embodying a measurement of a physical quantity. The first sensor and second sensor are connected to the processor and are operable to generate respectively first and second measurements of the physical quantity. The processor defines a first measurement range within which the measurement signal is dependent on the first measurement and not the second measurement. The processor defines a second measurement range within which the measurement signal is dependent on the second measurement and not the first measurement. The first and second ranges meet at a predetermined transition. The first and second measurements are different at the transition and the measurement embodied in the measurement signal crosses the transition without an abrupt change. 1. An apparatus comprising:a housing; and at least two sensors each being configured to generate a respective measurement signal of a physical characteristic over a respective one of a first measurement range and a second measurement range, and', 'a processor connected to the at least two sensors and defining the first and second measurement ranges so that the first and second measurement ranges meet at a predetermined transition where a measurement embodied in the respective measurement signals transitions between the first and second measurement ranges without an abrupt change, the respective measurement signals being different at the predetermined transition., 'a multi-sensor disposed within the housing, the multi-sensor including'}2. The apparatus of claim 1 , wherein the predetermined transition for a rising physical characteristic occurs at a higher measurement value than the predetermined transition for a falling physical characteristic.3. The apparatus of claim 1 , wherein the measurement embodied in the respective measurement signal for the first measurement range is adjusted ...

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Номер записи: 15
07-01-2016 дата публикации

Apparatus for detecting information of living body

Номер: US20160000339A1
Автор: Hyoyoung Jeong, Jaemin Kang, Sangyun Park, Younho Kim
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A biometric information detecting apparatus is provided. The biometric information detecting apparatus includes a fixing unit disposed on a lower structure, and a pressure pulse wave measuring unit that is supported by the fixing unit and separate from the lower structure. An optical pulse wave measuring unit is disposed on the pressure pulse wave measuring unit. The optical pulse wave measuring unit may contact a surface of a subject's body. A pressure pulse wave of the subject's body may be measured by the pressure pulse wave measuring unit and an optical pulse wave of the subject's body may be measured by the optical pulse wave measuring unit, at the same time.

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Номер записи: 16
06-01-2022 дата публикации

Pressure detecting unit for a measuring device for measuring a pressure status value of a plant specimen, and method for manufacturing a pressure detecting unit

Номер: US20220003622A1
Автор: Matthias Boecker
Принадлежит: ROBERT BOSCH GMBH

A method for manufacturing a pressure detecting unit for a measuring device for measuring a pressure status value of a plant specimen. The method includes mounting a sensor unit for detecting the pressure status value at a carrier substrate, fastening a frame to the carrier substrate, the frame including a fastening surface, a contact surface oriented opposite the fastening surface and an inner surface defining an opening and extending between the fastening surface and the contact surface, the frame being situated at the carrier substrate in such a way that the fastening surface faces the carrier substrate and the inner surface surrounds the sensor unit, and filling the opening of the frame with a filling material for forming an elastic pressure coupling layer. A pressure detecting unit for a measuring device for measuring a pressure status value of a plant specimen is also described.

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Номер записи: 17
02-01-2020 дата публикации

INTERNAL CLADDING IN SAPPHIRE OPTICAL DEVICE AND METHOD OF MAKING SAME

Номер: US20200003949A1
Автор: Blue Thomas Elder, Wilson Brandon Augustus
Принадлежит:

Provided is a cladded single crystal sapphire optical device (e.g., a s sapphire optical fiber or wafer). In one embodiment, the innovation provides a method for forming a cladding in a single crystal sapphire optical device by reactor irradiation. The reactor irradiation creates ions external to the optical device that enter the optical device, displace atoms in the optical device, and are implanted in the optical device, thus modifying the index of refraction of the optical device near the surface of the optical device and creating a cladding in the sapphire optical device. 1. A sapphire optical device having a graded internal refractive cladding within the sapphire optical device.2. The sapphire optical device of claim 1 , wherein the sapphire optical device is a sapphire optical fiber.3. The sapphire optical device of inscribed with at least one type-II Bragg grating.4. The sapphire optical device of claim 1 , wherein the sapphire optical device is a sapphire optical wafer.5. The sapphire optical device of claim 4 , wherein the sapphire optical wafer includes an ion implanted waveguide.6. A waveguide comprising the sapphire optical device of . The waveguide of claim 4 , wherein the waveguide is implemented onto a silicon chip.87. The waveguide of claim claim 4 , wherein the silicon chip is incorporated into a photonic device.9. The waveguide of claim 9 , wherein the photonic device is a silicon chip-based spectroscopy device. This application is a Continuation of and claims priority to U.S. patent application Ser. No. 15/928,411 entitled “Internal Cladding in Sapphire Optical Device and Method of Making Same’ filed on Mar. 22, 2018 which claims the benefit of U.S. Provisional Patent Application Ser. No. 62/475,312 entitled “Creation of an Internal Cladding in Sapphire Optical Fiber by Reactor Irradiation” filed on Mar. 23, 2017, each of which is incorporated herein in its entirety by reference.The innovation relates to internal cladding in sapphire optical ...

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Номер записи: 18
03-01-2019 дата публикации

Phase Control Unit for a Vibronic Sensor

Номер: US20190003874A1
Автор: Brengartner Tobias, Girardey Romuald, Sautermeister Manuel
Принадлежит:

An apparatus and a method for determining and/or monitoring at least one process variable of a medium in a container, comprising: a mechanically oscillatable unit, a driving/receiving unit for exciting the mechanically oscillatable unit to execute mechanical oscillations by means of an electrical exciting signal and for receiving and transducing mechanical oscillations into an electrical, received signal, an electronics unit, which electronics unit is embodied, to produce the exciting signal starting from the received signal, to set a predeterminable phase shift (Δϕ) between the exciting signal and the received signal, and from the received signal, to determine and/or to monitor the at least one process variable. A phase correction unit is provided, which phase correction unit is at least embodied, to ascertain a phase correction value (Δϕ) from at least one process parameter dependent, characteristic variable of at least one component of the apparatus, especially the driving/receiving unit, and to set the predeterminable phase shift (Δϕ) in accordance with the phase correction value (Δϕ). 120-. (canceled)21. An apparatus for determining and/or monitoring at least one process variable of a medium in a container , comprising:a mechanically oscillatable unit;a driving/receiving unit for exciting said mechanically oscillatable unit to execute mechanical oscillations by means of an electrical exciting signal and for receiving and transducing mechanical oscillations into an electrical, received signal; and to produce the exciting signal starting from the received signal,', 'to set a predeterminable phase shift between the exciting signal and the received signal, and,', 'from the received signal, to determine and/or to monitor the at least one process variable', 'wherein said apparatus comprises a phase correction unit, which is at least embodied', {'sub': 'kor', 'to ascertain a phase correction value (Δϕ) from at least one process parameter dependent, characteristic ...

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Номер записи: 19
13-01-2022 дата публикации

MATERIAL TRACKING FOR MILLING MACHINES

Номер: US20220010507A1
Автор: Hirman Colton J.
Принадлежит: Caterpillar Paving Products Inc.

A milling machine includes a cutting rotor, a foldable conveyor, a sensor, and a controller. The cutting rotor is configured to mill material beneath the milling machine. The foldable conveyor is configured to receive and dispose the milled material and includes a first section and a second section foldable with respect to the first section at a fold structure. The sensor is positioned on the milling machine and configured to sense a value indicative of a force acting on the second section. The controller is configured to determine an amount of the milled material within the second section of the foldable conveyor using the value indicative of the force. 1. A method for tracking an amount of milled material for a milling machine , the method comprising:milling paving material using a cutting rotor of the milling machine;providing the milled material to a foldable conveyor of the milling machine, the foldable conveyor comprising a first section and a second section foldable with respect to the first section at a fold structure;sensing, via a sensor positioned on the milling machine, a value indicative of a force acting on the second section of the foldable conveyor; anddetermining, via a controller, the amount of the milled material using the value indicative of the force acting on the second section.2. The method of claim 1 , wherein the fold structure comprises a hydraulic cylinder claim 1 , and wherein the sensor is positioned within the hydraulic cylinder.3. The method of claim 2 , wherein sensing claim 2 , via the sensor claim 2 , comprises sensing a pressure in the hydraulic cylinder using a pressure sensor.4. The method of claim 1 , wherein the fold structure comprises one or more links connected between the first section and the second section to facilitate folding of the foldable conveyor claim 1 , and wherein sensing via the sensor comprises sensing a force on the one or more links.5. The method of claim 4 , wherein the sensor comprises one or more strain ...

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Номер записи: 20
14-01-2016 дата публикации

SMALL PROFILE PRESSURE AND TEMPERATURE GAUGES

Номер: US20160011066A1
Автор: Dunphy James, Grunbeck John J., Taverner Domino
Принадлежит:

Small profile apparatus for pressure and/or temperature sensing within a wellbore are provided. The apparatus may include optical sensing assemblies designed for inclusion in traditional or coiled production tubing deployments and suitable for use in high pressure, high temperature environments. One example assembly generally includes a housing having a divider for separating a first volume from a second volume inside the housing, a compressible element disposed in the first volume, wherein a first end of the compressible element is coupled to the divider and a second of the compressible element is sealed, and a large diameter optical waveguide disposed in an internal volume of the compressible element. The waveguide typically includes a first portion with a first grating and a second portion with a second grating, wherein the first portion has a greater outer diameter than the second portion. 1. The optical sensing assembly of claim 85 , volume claim 85 , wherein the first end of the compressible element is coupled to the divider claim 85 , wherein the large diameter optical waveguide is disposed in an internal volume of the compressible element claim 85 ,wherein the first portion has a greater outer diameter than the second portion, and wherein the outer diameter of the second portion is at least 300 μm.2. The assembly of claim 1 , wherein the compressible element comprises a bellows assembly.3. The assembly of claim 1 , wherein the large diameter optical waveguide has a dog-bone shape claim 1 , wherein the first portion comprises a piston portion claim 1 , and wherein the second portion comprises a narrow portion.4. The assembly of claim 1 , wherein the second end of the compressible element is sealed with an end cap.5. The assembly of claim 1 , wherein the large diameter optical waveguide comprises a third portion having a greater outer diameter than the second portion claim 1 , and wherein the third portion is configured to interact with the second end of the ...

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Номер записи: 21
09-01-2020 дата публикации

Long-term in-situ sampling and analysis device for sediment pore water and method thereof

Номер: US20200011768A1
Автор: Chao Zhong, Jiawang Chen, Qianyong LIANG, Xuemin Wu, Yifei Dong, Ziqiang REN
Принадлежит: Guangzhou Marine Geological Survey

The present application discloses a long-term, in-situ sampling and analysis device for sediment pore water and a method thereof. The long-term in-situ sampling and analysis device for sediment pore water includes a bracket, a probe, an elevator, a diverting device, a first water storage device, and a second water storage device, a peristaltic pump, a dissolved gas of sediment pore water analysis device and an in-situ environment measurement device. The present application can collect and store the sediment pore water in an in-situ, long-term and time-phased manner, and in low measuring error level.

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Номер записи: 22
03-02-2022 дата публикации

OPTICAL FIBER PRESSURE SENSOR GUIDEWIRE

Номер: US20220031177A1
Автор: Eberle Michael J., Rourke Howard Neil, Tasker Diana Margaret
Принадлежит:

In an example, this document discloses an apparatus for insertion into a body lumen, the apparatus comprising an optical fiber pressure sensor. The optical fiber pressure sensor comprises an optical fiber configured to transmit an optical sensing signal, a temperature compensated Fiber Bragg Grating (FBG) interferometer in optical communication with the optical fiber, the FBG interferometer configured to receive a pressure and modulate, in response to the received pressure, the optical sensing signal, and a sensor membrane in physical communication with the FBG interferometer, the membrane configured to transmit the received pressure to the FBG interferometer. 1. (canceled)2. An apparatus for insertion into a body lumen , the apparatus comprising:an optical fiber pressure sensor including:a first optical fiber anchor, to which a first portion of an optical fiber is secured;a second optical fiber anchor, to which a second portion of the optical fiber is secured; anda gasket longitudinally arranged between the first and second anchors and including a passage through which a third portion of the optical fiber passes, the gasket being more elastic or compliant than the first and second anchors,wherein the first and second anchors and the gasket are arranged to use the elastic or compliant nature of the gasket to allow at least one of longitudinal stretching or compression of the optical fiber between the first and second anchors to sense pressure at an internal location within a human body.3. The apparatus of claim 2 , comprising:the optical fiber, wherein the optical fiber is configured to communicate light between a location outside of the human body and a portion of the optical fiber that is to be located at or near the internal location within the human body at which a pressure is to be measured, wherein the optical fiber pressure sensor is coupled to the optical fiber.4. The apparatus of claim 3 , comprising:a guidewire including a solid core wire having an outer ...

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Номер записи: 23
03-02-2022 дата публикации

Fibre Optic Cables

Номер: US20220034688A1
Автор: Ellwood Robert, Godfrey Alastair
Принадлежит:

A fibre optic cable structure () suitable for fibre optic sensing with an improved sensitivity to an environmental parameter is described. The structure () includes an optical fibre () and a bend inducer () responsive to the environmental parameter to control bending of the optical fibre. The bend inducer () is configured to adopt a first configuration, that induces a first curvature of the optical fibre, at a first value of the environmental parameter and to adopt a second configuration at a second, different, value of the environmental parameter that induces a second, different, curvature of the optical fibre. By action of the bend inducer () a change in value of the environmental parameter imparts a bending force on the optical fibre. 1. A fibre optic cable structure comprising:an optical fibre; anda bend inducer that is responsive to an environmental parameter to control bending of the optical fibre;wherein the bend inducer is configured to adopt a first configuration at a first value of the environmental parameter that induces a first curvature of the optical fibre and to adopt a second configuration at a second, different, value of the environmental parameter that induces a second, different, curvature of the optical fibre such that a change in value of the environmental parameter imparts a bending force on the optical fibre.2. The fibre optic cable structure as claimed in claim 1 , wherein the bend inducer comprises:a first component with a longitudinal dimension that varies with the environmental parameter; anda second component with a longitudinal dimension that varies with the environmental parameter;wherein the amount of variation in the longitudinal dimension of the first component to a given change in the environmental parameter differs from the amount of variation in the longitudinal dimension of the second component to the given change in the environmental parameter.3. The fibre optic cable structure of claim 2 , wherein the first component and second ...

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Номер записи: 24
21-01-2016 дата публикации

PHOTONIC ARTICLE, PROCESS FOR MAKING AND USING SAME

Номер: US20160018280A1
Автор: Egan Patrick F., Hendricks Jay H., Olson Douglas A., Ricker Jacob E., Scace Gregory E., Stone Jack A., Strouse Gregory F.
Принадлежит:

An article to determine a sample condition includes a substrate; a reference optical cavity disposed on the substrate and comprising a reference cavity, the reference optical cavity being configured to support a reference optical resonance and to maintain an axial length of the reference cavity; and a sample optical cavity disposed on the substrate and comprising a sample cavity, the sample optical cavity being configured to support a sample optical resonance and to maintain an axial length of the sample cavity.

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Номер записи: 25
22-01-2015 дата публикации

Apparatus and Method of Distributed Pressure Sensing

Номер: US20150020598A1
Автор: Wang Yunmiao
Принадлежит:

Various embodiments include apparatus and methods to measure pressure using an optical fiber. The optical fiber can be structured with fiber Bragg gratings arranged along the optical fiber. Optical signals can be transmitted through the optical fiber, where the optical signals have a wavelength of a slow-light peak of a respective one of the fiber Bragg gratings. Signals resulting from the optical signals transmitted through the optical fiber can be detected and a value of pressure from the detected signals can be determined. 1. A method comprising:transmitting optical signals through an optical fiber having a plurality of fiber Bragg gratings distributed along the optical fiber, each fiber Bragg grating having a Bragg wavelength different from the other fiber Bragg gratings, each of the optical signals having an operating wavelength different from operating wavelengths of the other optical signals, each operating wavelength of the optical signals being at a wavelength of a slow-light peak of a respective one of the fiber Bragg gratings;detecting signals resulting from the optical signals transmitted through the optical fiber; anddetermining a value of pressure from the detected signals, the determined value corresponding to pressure at a location of one of the fiber Bragg gratings.2. The method of claim 1 , wherein transmitting the optical signals through the optical fiber includes propagating two orthogonal polarized modes in the optical fiber for each of the optical signals.3. The method of claim 2 , wherein propagating the two orthogonal polarized modes in the optical fiber includes using polarization elements between a source of the optical signals and an end of the optical fiber at which the optical signals are injected for transmission through the optical fiber.4. The method of claim 2 , wherein detecting signals includes using a linear polarizer at the output of the optical fiber to generate a beat signal of light in the two orthogonal polarized modes.5. The ...

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Номер записи: 26
22-01-2015 дата публикации

OPTICAL PRESSURE SENSOR

Номер: US20150020599A1
Автор: Maillaud Fabrice F.M., Pechstedt Ralf-Dieter
Принадлежит:

An optical pressure sensor is disclosed having a pressure sensing optical cavity. A temperature sensing optical cavity at the sensor head is used by an interrogator to correct a pressure signal for effects of temperature. The optical cavities may be, for example, Fabry Perot cavities in the sensor head. 1. An optical pressure sensor comprising:a sensor head comprising a pressure sensing optical cavity and at least one temperature sensing optical cavity; andan interrogator optically coupled to the sensor head, and arranged to generate at least one signal representing pressure at the sensor head responsive to the pressure sensing optical cavity, the at least one signal representing pressure being temperature corrected by the interrogator responsive to the at least one temperature sensing optical cavity.2. The optical pressure sensor of wherein the interrogator comprises a first optical analyser arranged to detect a response of the pressure sensing optical cavity to pressure at the sensor head claim 1 , and a second optical analyser arranged to detect a response of the at least one temperature sensing optical cavity to temperature at the sensor head.3. The optical pressure sensor of wherein the first optical analyser is arranged to separately detect the intensities of two different wavelengths of probe light reflected at the pressure sensing optical cavity claim 2 , and to generate the at least one signal representing pressure at the sensor head responsive to a relationship between the detected intensities of the two different wavelengths.4. The optical pressure sensor of wherein the second optical analyser comprises a spectral engine arranged to detect an interference spectrum in probe light reflected from the at least one temperature sensing optical cavity claim 2 , and to detect the response of the at least one temperature sensing optical cavity to temperature from the interference spectrum.5. The optical pressure sensor of wherein the second optical analyser is ...

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Номер записи: 27
16-01-2020 дата публикации

DEVICE FOR MULTI-PARAMETER INTEGRATED MONITORING OF DEEP SUBMARINE TURBIDITY CURRENT

Номер: US20200018678A1
Автор: Guo Lei, GUO Zhenqi, Liu Tao, Wang Dong, WEI Guanli, YANG Xiuqing, Zhang Yan, ZHU Yongmao
Принадлежит: OCEAN UNIVERSITY OF CHINA

A device for multi-parameter integrated monitoring of a deep submarine turbidity current primarily includes cement pile pore-pressure monitoring, optical turbidity monitoring, floating ball flow velocity monitoring, and turbidity current sediment sampling, can observe the turbidity, excess pore pressure, flow velocity, and other parameters of the turbidity current, can fulfill simultaneous and real-time transmission for in-situ monitoring, and can complete multiple tasks at the same observing position, so that the situation where the sampling position and the observing position are different due to the movement of an apparatus along with a ship during ordinary work is avoided. 1. A device for multi-parameter integrated monitoring of a deep submarine turbidity current , comprising:an upper part and a lower part; [ 'a plurality of water-permeable stone rings are clamped in the cement pile in a spaced manner in a vertical direction and have an outer diameter identical to an outer diameter of the cement pile and an inner diameter identical to an outer diameter of the casing pipe;', 'the lower part comprises a cement pile, and a casing pipe embedded into the cement pile to form a combined-type pore-pressure monitoring probe rod;'}, 'a plurality of inner water-permeable stones and a plurality of FBG pore-pressure sensors are arranged on an inner wall of the casing pipe and are located on the water-permeable stone rings, the plurality of FBG pore-pressure sensors have bottoms connected with the plurality of inner water-permeable stones and upper parts connected with a top water-permeable stone, seawater from above enters the probe rod through the top water-permeable stone, and a pressure of the seawater and a pore pressure of seabed sediments act on the plurality of FBG pore-pressure sensors;', a control circuit board and a slide rail are mounted in the glass cover, a scattered light receiving system and an infrared excitation light source configured for emitting an ...

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Номер записи: 28
28-01-2016 дата публикации

A sensing cable

Номер: US20160025584A1
Автор: Etienne Rochat, Ion Bals, Marc Nikles
Принадлежит: OMNISENS SA

A sensing cable including one or more optical fibers and a coating which is provided on the one or more optical fibers. The coating is configured so that pressure applied to the sensing cable, along one or more axes, induces less lateral compression on the one or more optical fibers than pressure applied to the sensing cable along one or more other axes so as to change birefringence in the one or more optical fibers.

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Номер записи: 29
24-04-2014 дата публикации

MICRO-ELECTRO-MECHANICAL DEVICE AND METHOD FOR MAKING THE SAME

Номер: US20140109680A1
Автор: Tsai Ming-Han
Принадлежит: PIXART IMAGING INCORPORATION

The invention provides a micro-electro-mechanical device which includes a substrate, an electrode, and a diaphragm. The electrode includes plural vent holes. The diaphragm is disposed above and in parallel to the electrode, to form a capacitive sensor with the electrode. The diaphragm includes plural ribs protruding upward and/or downward from the diaphragm; the ribs are respectively disposed in correspondence to the plural vent holes and do not overlap nor contact the electrode. A method for making the micro-electro-mechanical device is also provided according to the present invention. 1. A micro-electro-mechanical device , comprising:an electrode including a plurality of vent holes; anda diaphragm, disposed above and in parallel to the electrode to form a capacitive sensor with the electrode, and including a plurality of ribs protruding upward and/or downward from the diaphragm which are respectively disposed in correspondence to the vent holes, wherein the ribs do not contact the electrode and do not overlap the electrode from top view.2. The micro-electro-mechanical device of claim 1 , wherein the ribs are made of a conductive material including metal claim 1 , metallic compound claim 1 , conductive polymer claim 1 , polysilicon or a combination thereof.3. The micro-electro-mechanical device of claim 1 , wherein at least one of the ribs includes at least one via layer and a metal layer.4. The micro-electro-mechanical device of claim 3 , wherein the via layer is made of a conductive material and includes an internal space which is a hollow space or filled with a dielectric material.5. The micro-electro-mechanical device of claim 1 , wherein at least one of the ribs includes a bottom opening or a top opening.6. The micro-electro-mechanical device of claim 1 , wherein the ribs near a center region of the diaphragm have a relatively higher density than the ribs near a peripheral region of the diaphragm.7. The micro-electro-mechanical device of claim 1 , wherein the ...

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Номер записи: 30
24-01-2019 дата публикации

PRESSURE SENSOR HAVING A HELMHOLTZ RESONATOR

Номер: US20190025145A1
Автор: DeRosa Louis, Gardner Robert, Hurst Adam, VanDeWeert Joseph
Принадлежит:

This disclosure provides example methods, devices, and systems for a sensor having a Helmholtz resonator. In one embodiment, a system may comprise a sensing element; a header coupled to the sensing element; a housing coupled to the header; an adapter coupled to the housing; a screen disposed in an opening of the housing, wherein a first cavity is disposed between the screen and the sensing element and a second cavity is disposed between the adapter and the sensing element, and the screen in combination with the first cavity and the second cavity form a Helmholtz resonator. 1. A method , comprising:providing a sensing element having a front-side and a back-side;coupling a header to the back-side of the sensing element;coupling a housing to the header;coupling an adapter to the housing; andforming a first cavity between at least a portion of the adapter and the sensing element such that at least the front-side of the sensing element is isolated from a stress applied at the adapter.2. The method of claim 1 , further comprising securing the adapter to the housing.3. The method of claim 1 , wherein forming the first cavity defines a first gap between the sensing element and the adapter claim 1 , wherein the first gap is between 0.001 inches to 0.015 inches.4. The method of claim 1 , further comprising forming a second cavity between the header and the adapter.5. The method of claim 4 , wherein forming the second cavity at least partially isolates the header from a stress applied at the adaptor.6. The method of claim 4 , wherein forming the second cavity between the header and the adapter defines a second gap between the header and the adapter claim 4 , wherein the second gap is between 0.005 inches to 0.040 inches.7. The method of claim 1 , further comprising forming a front seal between the sensing element and a mating surface.8. The method of claim 1 , further comprising measuring an environmental condition with the sensing element.9. The method of claim 8 , wherein ...

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Номер записи: 31
28-01-2021 дата публикации

PRESSURE SENSING DEVICE AND METHOD FOR USING THE SAME

Номер: US20210025775A1
Автор: Guler Urcan, Homma Kenji, Wang Xuemei
Принадлежит:

A pressure sensing film includes first and second films. The first and second films are configured to form an optical cavity therebetween. A flexible transparent film is arranged in the optical cavity. The flexible transparent film is compressible in response to a pressure change in air adjacent the pressure sensing film. A pressure sensing device and a method of sensing pressure adjacent a surface are also disclosed. 1. A pressure sensing film , comprising:first and second films, the first and second films configured to form an optical cavity therebetween; anda flexible transparent film arranged in the optical cavity, wherein the flexible transparent film is compressible in response to a pressure change in air adjacent the pressure sensing film.2. The pressure sensing film of claim 1 , wherein at least one of the first and second films is metallic.3. The pressure sensing film of claim 2 , wherein at least one of the first and second films comprises gold.4. The pressure sensing film of claim 1 , wherein at least one of the first and second film comprises stacked dielectric layers.5. The pressure sensing film of claim 1 , wherein the first film is reflective and the second film is semi-transparent.6. The pressure sensing film of claim 1 , wherein both the first and second films are semi-transparent.7. The pressure sensing film of claim 1 , wherein the flexible transparent film comprises a polymeric material.8. The pressure sensing film of claim 7 , wherein the flexible transparent film comprises luminescent particles.9. The pressure sensing film of claim 8 , wherein the luminescent particles are thermographic phosphors.10. The pressure sensing film of claim 1 , wherein the pressure sensing film is configured to sense a pressure adjacent a surface of a structure in a gas turbine engine.11. A pressure sensing device claim 1 , comprising:a pressure sensing film, comprising:first and second films, the first and second films configured to form an optical cavity ...

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Номер записи: 32
29-01-2015 дата публикации

FFR SENSOR HEAD DESIGN THAT MINIMIZES STRESS INDUCED PRESSURE OFFSETS

Номер: US20150032011A1
Автор: LEE Gregory, MCGOWAN ROGER W.
Принадлежит:

A pressure sensing medical device may include a guidewire including a tubular member having a lumen, the tubular member being translatable between a generally straightened position and a deflected position, and a pressure sensor attached at a distal end of a fiber optic extending within the lumen, the pressure sensor being disposed within a distal portion of the tubular member. The pressure sensor may include a pressure-sensitive membrane disposed on a distal end thereof. The pressure sensor may include one or more contact members capable of providing a contact point between the contact member and an inner surface of the tubular member when in the deflected position, the contact point being axially spaced apart from the membrane along a longitudinal axis of the pressure sensor. 1. A pressure sensing medical device , comprising:a guidewire including an elongate tubular member having a lumen extending therethrough; andan optical pressure sensor attached at a distal end of a fiber optic extending longitudinally within the lumen, the pressure sensor being disposed within a distal portion of the tubular member;wherein the pressure sensor further includes a contact member capable of providing a contact point between the contact member and an inner surface of the tubular member, the contact point being axially spaced apart from a distal end of the pressure sensor.2. The pressure sensing medical device of claim 1 , including at least one attachment member fixedly attaching the fiber optic to the tubular member within the distal portion claim 1 , the at least one attachment member being proximally spaced apart from the pressure sensor.3. The pressure sensing medical device of claim 1 , wherein the contact member is spaced apart from the inner surface of the tubular member in a generally straightened position.4. The pressure sensing medical device of claim 1 , wherein the contact member is disposed about the pressure sensor.5. The pressure sensing medical device of claim 1 , ...

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Номер записи: 33
30-01-2020 дата публикации

Physical quantity measurement device

Номер: US20200033165A1
Автор: Noboru Kitahara
Принадлежит: Denso Corp

The physical quantity measurement device includes a passage flow channel, a branch flow channel, and a physical quantity detection unit. A direction along which a pair of opposing surfaces facing each other are arranged is defined as a width direction, and a direction orthogonal both to the width direction and an inflow direction of fluid through an inflow port is defined as a height direction. An inner peripheral surface of the passage flow channel includes a height narrowing surface that narrows the passage flow channel so that a height dimension of the passage flow channel along the height direction is gradually reduced toward the outflow port while reserving a parallel region extending linearly between the inflow port and the outflow port parallel to the inflow direction. The height narrowing surface is not exposed through the inflow port in the inflow direction.

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Номер записи: 34
30-01-2020 дата публикации

PHYSICAL QUANTITY MEASUREMENT DEVICE

Номер: US20200033171A1
Автор: Kitahara Noboru
Принадлежит:

A physical quantity measurement device measures a physical quantity of a fluid. The device includes a passage flow channel, a branch flow channel, a flow channel partition portion that separates the passage flow channel and the branch flow channel to have the branch flow channel branch off from the passage flow channel, and a physical quantity detector. The flow channel partition portion has a partition top portion as an upstream-side end that is not exposed through the inflow port. 1. A physical quantity measurement device that measures a physical quantity of a fluid , comprising:a passage flow channel that includes an inflow port and an outflow port, the fluid entering the passage flow channel through the inflow port and exiting the passage flow channel through the outflow port;a branch flow channel that branches off from the passage flow channel;a flow channel partition portion that separates the passage flow channel and the branch flow channel to have the branch flow channel branch off from the passage flow channel; anda physical quantity detector that detects the physical quantity of the fluid in the branch flow channel, whereinthe flow channel partition portion has a partition top portion as an upstream-side end that is not exposed through the inflow port.2. The physical quantity measurement device according to claim 1 , whereina downstream-side end of a boundary between the passage flow channel and the branch flow channel is defined as a downstream boundary portion, andthe partition top portion serves as the downstream boundary portion.3. The physical quantity measurement device according to claim 1 , whereina pair of opposing surfaces in an inner peripheral surface of the passage flow channel face each other across the inflow port and a flow channel boundary portion that is a boundary between the passage flow channel and the branch flow channel,a direction along which the pair of opposing surfaces are arranged is defined as a width direction,a direction ...

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Номер записи: 35
04-02-2021 дата публикации

NON-DESTRUCTIVE MONITORING METHOD FOR INTERNAL PRESSURE INTENSITY OF PIPELINE

Номер: US20210033480A1
Автор: REN Liang, WANG Jiajian
Принадлежит:

A non-destructive monitoring method for internal pressure intensity of a pipeline. The method establishes an equation relationship by the fact that the variation of the internal diameter of the pipeline is the same as that measured by FBG sensors, and can effectively obtain the value of the internal pressure intensity of the pipeline by measuring the strain values of the FBG sensors installed on the pipeline so as to monitor the internal pressure intensity of the pipeline. The present invention has the advantages of simple principle, convenient installation, no damage to pipeline structure, long-distance real-time on-line monitoring and the like, and can measure the pressure intensity of various pipelines with different diameters by changing the calibration distance of sensors and the dimension of sensor clamps. This can complete non-destructive, real-time and accurate monitoring on the internal pressure intensity of the pipeline. 2. (canceled) The present invention belongs to the technical field of optical fiber sensing and relates to a non-destructive monitoring method for internal pressure intensity of a pipeline.With the rapid development of industrial economy, the demand for resources such as petroleum and natural gas which are vital to human development continuously increases. With the advantages of low cost, energy saving, high safety, stable supply and the like, the pipeline can be used for long-distance transportation of petroleum and natural gas and thus its usage is also on the increase. In order for the media in the pipeline to be transported normally, it is essential to apply appropriate pressure intensity in the pipeline. However, on one hand, pressure intensity that is too high makes the pipeline unable to withstand excessive pressure and thus damaged, shortening the service life of the pipeline; on the other hand, pressure intensity that is too low makes the pipeline unable to transport the media normally, increasing the economic cost. Therefore, ...

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Номер записи: 36
11-02-2016 дата публикации

METHOD OF DETERMINING AND UTILIZING SCALE AND SHAPE FACTOR EQUATION COEFFICIENTS FOR RESERVOIR FLUIDS

Номер: US20160041142A1
Автор: Andrews Nathan F., Freitas Christopher J., Mueschke Nicholas J.
Принадлежит: BAKER HUGHES INCORPORATED

An apparatus for estimating conditions of reservoir fluid in an underground reservoir that includes a sensor for measuring one or more measured parameters of that fluid, the measured parameters including at least one of: temperature, pressure and density of the fluid and a processor. The processor is configured to: receive data representing the one or more measured parameters; determine or receive coefficients for an extended corresponding states (XCS) model, wherein propane is used as a reference fluid in determining the coefficients or was used in the forming of the received coefficients; and solve the XCS model with the coefficients to form estimates of the fluid conditions. 1. An apparatus for estimating conditions of reservoir fluid in an underground reservoir , the apparatus comprising:a sensor for measuring one or more measured parameters of that fluid, the measured parameters including at least one of: temperature, pressure and density of the fluid; and receive data representing the one or more measured parameters;', 'determine or receive coefficients for an extended corresponding states (XCS) model, wherein propane is used as a reference fluid in determining the coefficients or was used in the forming of the received coefficients; and', 'solve the XCS model with the coefficients to form estimates of the fluid conditions., 'a processor, the processor configured to2. The apparatus of claim 1 , wherein the processor determines the coefficients by:estimating a saturated liquid density for a component of interest;calculate saturation pressure of the component of interest;form an initial estimate of a first scale factor;form a propane equivalent temperature based on the initial estimate of the first scale factor and a measured temperature;iteratively revising the initial estimate until convergence is reached to form a first scale factor;calculate a second scale factor; andregress the first and second scale factors.4. A computer based method estimating conditions ...

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Номер записи: 37
24-02-2022 дата публикации

Fiber optic load sensors and systems therefor

Номер: US20220057283A1
Автор: David H. Crowne, Peter J. Carini
Принадлежит: Simmonds Precision Products Inc

A load sensing system for sensing a load on a structure can include an optical load sensing element configured to change an optical state based on a force applied thereto, an optical source operatively connected to the optical load sensing element and configured to input an input optical signal to the optical load element, and an optical detector configured to receive a returned optical signal from the optical load sensing element. The optical detector can be configured to detect one or more frequency peaks of the returned optical signal and to use the one or more frequency peaks of the returned optical signal to correlate to a load value of the load and output the load value indicative of the load.

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Номер записи: 38
08-05-2014 дата публикации

Fiber Bragg Grating Pressure Sensor with Adjustable Sensitivity

Номер: US20140123764A1
Автор: Abtahi Mohammad, Long Pin, Naydenov Nikolay
Принадлежит:

A new type of optical pressure sensor with adjustable sensitivity is proposed based on the fiber Bragg grating (FBG). In this technique, the pressure changes the length of a metal bellows which is placed behind a spring. The fiber grating is fixed over the bellows between a fixed position and the connection point of bellows and spring. The wavelength change of FBG is caused by the change in the bellows length; however, the spring controls the total length expansion of the bellows. It will bring two benefits: first it is easy to change the pressure sensing range by changing the spring rate; and secondly the spring improves the linearity of the wavelength sift due to the pressure. The FBG is installed outside of the bellows and is not in contact with the material in which the pressure should be measured (gas or liquid) in contrast with other pressure sensors where the FBG is inside the bellows. This is an important issue because some materials could damage or change the characteristics of the fiber over the time. 1. A fiber Bragg grating pressure sensor , comprising a fiber Bragg grating connected to a metal bellows and a spring in which its spring constant can be adjusted by the screws in order to provide adjustable not only the pressure sensitivity but also the measuring pressure range.2. A device as defined in claim 1 , where said fiber grating is installed outside and connected to a metal bellow.3. A device as defined in claim 1 , where a spring is used behind the metal bellows to control and adjust the bellows displacement due to pressure.4. A device as defined in claim 1 , where the pressure sensor sensitivity can be adjusted.5. A device as defined in claim 1 , where the measuring pressure range can be adjusted.6. A device as defined in claim 1 , where the 2fiber grating is used to measure the temperature variations.7. A device as defined in claim 1 , where both fiber gratings are written in the same fiber.8. A device as defined in claim 1 , where the fiber ...

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Номер записи: 39
16-02-2017 дата публикации

Monitoring sensor for sealed secondary battery, sealed secondary battery, and monitoring method for sealed secondary battery

Номер: US20170047621A1
Автор: Nobuyuki Minakata, Takeshi Fukuda
Принадлежит: Toyo Tire and Rubber Co Ltd

A monitoring sensor for a sealed secondary battery 1 including a sealed outer casing 21 and an electrode group 22 including a polymer matrix layer 3 that is disposed in the inside accommodated in the inside of the sealed outer casing 21 , of the outer casing 21 and a detection unit 4 that is disposed on the outside of the outer casing 21 , wherein the polymer matrix layer 3 contains a filler that is dispersed therein and that changes an external field in accordance with deformation of the polymer matrix layer 3 , and the detection unit 4 detects change in the external field.

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Номер записи: 40
13-02-2020 дата публикации

SYSTEM AND APPARATUS COMPRISING A MULTI-SENSOR CATHETER FOR RIGHT HEART AND PULMONARY ARTERY CATHETERIZATION

Номер: US20200046234A1
Автор: ABEL Sylvain, CARON Eric, GLOVER Christopher
Принадлежит:

A system and apparatus comprising a multi-sensor catheter for right heart and pulmonary artery catheterization is disclosed. The multi-sensor catheter comprises multi-lumen catheter tubing into which at least three optical pressure sensors, and their respective optical fibers, are inserted. The three optical pressure sensors are arranged within a distal end portion of the catheter, spaced apart lengthwise within the distal end portion for measuring pressure concurrently at each sensor location. The sensor locations are configured for placement of at least one sensor in each of the right atrium, the right ventricle and the pulmonary artery, for concurrent measurement of pressure at each sensor location. The sensor arrangement may further comprise an optical thermo-dilution sensor, and another lumen is provided for fluid injection for thermo-dilution measurements. The catheter may comprise an inflatable balloon tip and a guidewire lumen, and preferably has an outside diameter of 6 French or less. 1. A multi-sensor catheter for right heart and pulmonary artery catheterization comprising:a length of catheter tubing extending between a proximal end and a distal end, and the distal end comprising a distal tip;a plurality of optical sensors and a plurality of optical fibers; a sensor end of each optical fiber being attached and optically coupled to an individual one of the plurality of optical sensors;the plurality of optical sensors and optical fibers extending within the catheter tubing, the sensors being spaced apart lengthwise to provide a sensor arrangement with said plurality of optical sensors positioned at respective sensor locations spaced apart lengthwise within a distal end portion of the catheter tubing;a proximal end of each of the plurality of optical fibers being coupled to an optical input/output connector at the proximal end of the multi-sensor catheter for connection to an optical control system; andthe plurality of optical sensors of the sensor ...

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Номер записи: 41
03-03-2022 дата публикации

STRETCHABLE STRAIN SENSOR, COMBINATION SENSOR, AND DISPLAY PANEL AND DEVICE

Номер: US20220065717A1
Автор: Chung Jong Won, JOO Won-Jae, Kuzumoto Yasutaka, LEE Gae Hwang, LEE Yeongjun, YUN Youngjun
Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

A stretchable strain sensor includes a light-emitting element, an optical structure, and a photo-detective element. The stretchable strain sensor is located in a path of light emitted from the light-emitting element. The optical structure is configured to have optical properties that change in response to stretching of at least a portion of the stretchable strain sensor. The photo-detective element is configured to detect light transmitted through the optical structure or reflected through the optical structure. 1. A stretchable strain sensor , comprisinga light-emitting element;an optical structure located in a path of light emitted from the light-emitting element, the optical structure configured to have optical properties that change in response to stretching of at least a portion of the stretchable strain sensor; anda photo-detective element configured to detect light transmitted through the optical structure or reflected by the optical structure.2. The stretchable strain sensor of claim 1 , wherein at least one of transmittance or reflectance of the optical structure changes according to a strain change or a thickness change of the portion of the stretchable strain sensor in response to the stretching of the portion of the stretchable strain sensor.3. The stretchable strain sensor of claim 1 , wherein the optical structure includes a material which is configured to change at least one of transmittance or reflectance according to a strain change or a thickness change of the portion of the stretchable strain sensor in response to the stretching of the portion of the stretchable strain sensor.4. The stretchable strain sensor of claim 3 , wherein the optical structure includes a light absorbing organic material claim 3 , a light absorbing inorganic material claim 3 , a light absorbing organic-inorganic material claim 3 , a metal claim 3 , a semi-metal claim 3 , a carbon material claim 3 , or a combination thereof.5. The stretchable strain sensor of claim 3 , ...

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Номер записи: 42
03-03-2022 дата публикации

Fiber Optic Pressure Sensor

Номер: US20220065724A1
Автор: BLACK Richard J., KUEHN Joshua, MOSLEHI Behzad, SOTOUDEH Vahid
Принадлежит: Intelligent Fiber Optic Systems, Inc.

A temperature correcting pressure gauge which has a diaphragm having at least one surface coupled to a source of pressure to be measured, the diaphragm first surface having a first FBG from a first optical fiber attached in an appropriately sensitive region of the diaphragm, a FBG from a second optical fiber attached to the opposite surface from the first FBG, the first and second FBGs reflecting or transmitting optical energy of decreasing or increasing wavelength, respectively, in response to an applied pressure. The first and second FBGs have nominal operating wavelength ranges that are adjacent to each other but are exclusive ranges and the FBGs also have closely matched pressure coefficients and temperature coefficients. 114-. (canceled)15. A pressure sensor system comprising:a diaphragm formed by material between a first blind aperture opening on one end of a rod and a second blind aperture opening on an opposite end of the rod, the first blind aperture forming an enclosed chamber configured to be coupled to a source of pressure;an optical fiber having a first fiber Bragg grating (FBG) attached to a sensing region of the diaphragm, the sensing region generating a strain upon application of a pressure to the enclosed chamber;a second FBG attached to a region of the diaphragm which does not generate a stain upon application of a pressure to the enclosed chamber, the second FBG thermally coupled to the first FBG;a controller configured to determine a pressure and optionally a temperature from a reflected or transmitted wavelengths from the first FBG and the second FBG.16. The pressure sensor of where the first FBG and the second FBG are reflection or transmission gratings.17. The pressure sensor of where the diaphragm has a first pressure coupled to the first aperture and a second pressure coupled to the second aperture.18. The pressure sensor of where the first FBG and the second FBG are either coupled to different optical fibers or are coupled to the same ...

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Номер записи: 43
25-02-2021 дата публикации

Pressure Detector

Номер: US20210052797A1
Автор: Hiroyuki Kawajiri, Ryo Kato, Shingo Okamoto
Принадлежит: Nikkiso Co Ltd

A pressure detector that includes a case connectable to a flow route for liquid, and a membrane member provided in the case and with which a liquid-phase portion to be supplied with the liquid in the flow route and a gas-phase portion to be supplied with gas are separated from each other, the membrane member being displaceable in accordance with a pressure of the liquid supplied to the liquid-phase portion, the pressure detector detecting the pressure of the liquid in the flow route by detecting a pressure in the gas-phase portion. The gas-phase portion has an opening through which the gas is allowed to be introduced or discharged in accordance with the displacement of the membrane member, and a secured portion secured for the introduction or discharge of the gas through the opening during the displacement of the membrane member toward a side of the gas-phase portion.

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Номер записи: 44
23-02-2017 дата публикации

OPTICAL FIBER SENSOR ASSEMBLY

Номер: US20170049341A1
Автор: FREY Steven R., Karabacak Devrez Mehmet, KNOPPERS German Enrique, MEULBLOK Bastiaan, VAN RIEL Paul
Принадлежит: Fugro Technology B.V.

A sensor assembly comprises an optical fiber having a sensing fiber portion that comprises at least one Fiber Bragg Grating. Further, the sensor assembly comprises a sensing body having body ends coupled to the fiber at opposite axial sides of the sensing fiber portion. Optionally, the optical fiber is arranged within a capillary, and the body ends of the sensing body are attached to the capillary, at opposite axial sides of the sensing fiber portion. The capillary may be filled with glue for attaching the optical fiber to the capillary. 1. A Sensor assembly comprising:an optical fiber having a sensing fiber portion that comprises at least one Fiber Bragg Grating (FBG);a sensing body having body ends attached to attachment points of the fiber at opposite axial sides of the sensing fiber portion.2. The Sensor assembly according to claim 1 , further comprising a capillary claim 1 , wherein the optical fiber is arranged in the capillary and wherein the attachment points of the fiber are attached to the body ends of the sensing body via the capillary.3. The Sensor assembly according to claim 2 , wherein the optical fiber is at least partially attached to the capillary claim 2 , wherein the capillary is preferably filled with glue for attaching the optical fiber to the capillary.4. (canceled)5. The Sensor assembly according to claim 2 , wherein the capillary extends at least over the entire length or substantially the entire length of the sensing body.6. The Sensor assembly according to claim 2 , wherein the capillary has capillary portions extending over fiber portions adjacent the FBG while the FBG is free from capillary.7. The Sensor assembly according to claim 6 , wherein a capillary portions extends from the body ends of the sensing body to adjacent the FBG.8. The Sensor assembly according to claim 2 , wherein the capillary extends to protect the fiber even beyond the sensing body.911-. (canceled)12. The Sensor assembly according to claim 2 , wherein the sensing ...

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Номер записи: 45
25-02-2016 дата публикации

Use of Wheel Slip to Help Identify Soft Spots

Номер: US20160054471A1
Автор: Frelich Thomas J., Hendricks Kyle David
Принадлежит: Caterpillar Paving Products Inc.

A compactor gathers GPS, orientation and wheel slip data to identify the location of a soft spot in a surface that is being compacted and to isolate the soft spot to a particular side of the compactor if the wheel slip data indicates that the soft spot is located beneath only one of the compactor wheels. The GPS, orientation and wheel slip data are displayed as location information to an operator and/or sent to a remote location to facilitate the fast and accurate repair of the soft spot. 1. A system for identifying and mapping soft spots traversed by a vehicle , the vehicle including a first wheel and a second wheel , the first and second wheels disposed on opposite sides of the vehicle , the system comprising:a first slip sensor for detecting a rotational speed of the first wheel and generating first wheel rotational speed data, the first slip sensor linked to a mapping system for transmitting the first wheel rotational speed data to the mapping system;a GPS sensor for detecting and generating GPS data, the GPS sensor linked to the mapping system for transmitting the GPS data to the mapping system; andthe mapping system configured to identify a location of a first wheel slip based on the first wheel rotational speed data and the GPS data.2. The system of claim 1 , wherein the first slip sensor is a speed sensor.3. The system of claim 1 , wherein the first slip sensor is a pressure sensor in fluid communication with a hydraulic circuit of the vehicle that powers the first wheel of the vehicle.4. The system of claim 1 , further including an orientation sensor for detecting a directional orientation of the vehicle and generating vehicle orientation data claim 1 , andwherein the mapping system is linked to the orientation sensor for receiving the vehicle orientation data from the orientation sensor and determining vehicle orientation in addition to the location of the first wheel slip.5. The system of claim 1 , wherein the mapping system is linked to a mapping network ...

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Номер записи: 46
25-02-2021 дата публикации

SENSOR COMPRISING A WAVEGUIDE WITH OPTICAL RESONATOR AND SENSING METHOD

Номер: US20210055473A1
Автор: Ntziachristos Vasilis, SHNAIDERMAN Rami, WISSMEYER Georg Michael
Принадлежит:

A sensor () comprises a waveguide () having a longitudinal axis and an end face (), the waveguide () comprising a Bragg grating (). The sensor comprises at least one reflector () on the end face () of the waveguide (). An optical resonator () is formed by the Bragg grating (), the at least one reflector (), and an inner portion of the optical resonator () between the Bragg grating () and the at least one reflector (). The inner portion of the optical resonator () extends within a portion of the waveguide (). The sensor () comprises a detector () configured to detect at least one spectral characteristic of the optical resonator () or a change of at least one spectral characteristic of the optical resonator (). 1. A sensor , comprising:a waveguide having a longitudinal axis and an end face, the waveguide comprising a Bragg grating;at least one reflector on the end face of the waveguide;wherein an optical resonator is formed by the Bragg grating, the at least one reflector, and an inner portion of the optical resonator between the Bragg grating and the least one reflector, the inner portion of the optical resonator extending within a portion of the waveguide; anda detector configured to detect at least one spectral characteristic of the optical resonator or a change of at least one spectral characteristic of the optical resonator.2. The sensor of claim 1 ,wherein the sensor is an acoustic sensor, a pressure sensor or a temperature sensor.3. The sensor of claim 1 ,wherein the optical resonator is configured to confine electromagnetic radiation in proximity to the end face.4. The sensor of claim 1 ,wherein the sensor further comprises a source configured to supply electromagnetic radiation to the optical resonator through the Bragg grating, andwherein the detector is configured to detect electromagnetic radiation passing from the optical resonator through the Bragg grating and propagating along the waveguide.5. The sensor of claim 4 ,wherein the detector is configured to ...

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Номер записи: 47
21-02-2019 дата публикации

SENSOR

Номер: US20190056281A1
Автор: Kapartis Savvas
Принадлежит: FT Technologies (UK) Ltd

A sensor () is provided, having an acoustic resonator () for containing a fluid such as air and at least one transducer () arranged to emit an acoustic signal into the acoustic resonator () in response to an excitation signal provided to the transducer () by an electronic unit (). The electronic unit () receives a response signal from at least one transducer (), and processes the excitation signal and the response signal to derive the acoustic signal response of the acoustic resonator. The pressure and/or temperature of the fluid may be derived from the acoustic signal response. More specifically, the electronic unit () may derive the temperature of fluid inside the acoustic resonator () by obtaining the resonant frequencies of the acoustic signal inside the acoustic resonator (), or may derive the barometric pressure from the acoustic signal response in the vicinity of the fundamental frequency and its harmonics. 1. A sensor , comprising:a resonator unit, the resonator unit comprising an acoustic resonator for containing a fluid, the acoustic resonator being operable to support standing acoustic waves, the resonator unit being operable to convert an electrical excitation signal into an acoustic signal in the acoustic resonator to establish the standing acoustic waves and operable to convert the acoustic signal in the acoustic resonator into an electrical response signal; andan electronic unit coupled to the resonator unit, the electronic unit being operable to provide the electrical excitation signal to the resonator unit and to receive the electrical response signal from the resonator unit, to process the electrical excitation signal and the electrical response signal to determine an acoustic signal response, and to derive one or more of a pressure and a temperature of the fluid in the acoustic resonator from the acoustic signal response.2. The sensor as claimed in claim 1 , wherein the electronic unit is operable to determine a resonant frequency of the standing ...

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Номер записи: 48
04-03-2021 дата публикации

SUBSTRATE SUPPORT WITH REAL TIME FORCE AND FILM STRESS CONTROL

Номер: US20210066038A1
Автор: Boyd, BUSCHE Matthew James, JR. Wendell Glenn, RAJ Govinda
Принадлежит:

Embodiments disclosed herein include a substrate support having a sensor assembly, and processing chamber having the same. In one embodiment, a substrate support has a puck. The puck has a workpiece support surface and a gas hole exiting the workpiece support surface. A sensor assembly is disposed in the gas hole and configured to detect a metric indicative of a deflection of a workpiece disposed on the workpiece support surface, wherein the sensor assembly is configured to allow gas to flow past the sensor assembly when positioned in the gas hole. 1. A sensor assembly , comprising:a sensor configured to detect a metric indicative of a deflection of a workpiece disposed above the sensor; and a split plate having a central opening with an inner perimeter disposed around the sensor; and', 'a mounting head disposed below the split plate., 'a porous sensor housing, the sensor disposed in the porous sensor housing, the porous sensor housing comprising2. The sensor assembly of claim 1 , wherein the mounting head is conical and the split plate is hexagonal.3. The sensor assembly of claim 2 , wherein mounting head comprises:one or more holes configured to allow gas to flow around the sensor.4. The sensor assembly of claim 3 , wherein split plate comprises:one or more holes configured to allow gas to flow around the sensor.5. The sensor assembly of claim 4 , wherein the holes in the split plate align with the holes in the mounting head to promote fluid to flow through the sensor assembly.6. The sensor assembly of claim 5 , wherein the sensor housing is formed from a porous ceramic material.7. The sensor assembly of claim 4 , wherein the split plate comprises:pins interfacing with and locating the split plate in the mounting head in an orientation that aligns holes in the mounting head with holes in the split plate.8. The sensor assembly of claim 2 , wherein the mounting head and the split plate are made from at least one of stainless steel (SST) claim 2 , titanium claim 2 , ...

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Номер записи: 49
08-03-2018 дата публикации

HIGH PRESSURE SENSOR FOR USE WITH A FLUID DELIVERY SYSTEM

Номер: US20180064866A1
Автор: Callan Gerald W., Riley Michael A., Spohn Michael A., Swantner Michael J.
Принадлежит:

A pressure sensor for use with a fluid delivery system having good sensitivity at low pressure, but also configured to remain in operating condition after being exposed to high pressures is disclosed herein. In one variation, the pressure sensor includes a fluid path set, a deformable element associated with the fluid path set and configured to deform in response to an external pressure, and a pressure transducer for monitoring deformation of the deformable element. In certain embodiments, the pressure sensor is configured to measure fluid pressure within the range of between about 0 mm Hg to about 300 mm Hg. However, the sensor pressure is also be configured to remain functional after being exposed to pressure in excess of about 60,000 mm Hg. 1. A fluid path set for a fluid delivery system comprising:a manifold comprising a plurality of fluid control valves in series fluid communication, wherein the first fluid control valve comprises a first port, a second port, and a third port, wherein the second port of the first fluid control valve is in fluid connection with a first port of a second fluid control valve and wherein a second port of the second fluid control valve is in fluid connection with a catheter connector conduit;a connector for providing fluid connection between a low pressure hand-operated syringe and the first port of the first fluid control valve;a tubing for providing fluid connection between a high pressure syringe and the third port of the first fluid control valve; anda pressure sensor in continuous fluid communication with fluid in a tubing portion in the catheter connector conduit and adapted to measure fluid pressure in the tubing portion, the pressure sensor comprising a deformable element configured to deform in response to changing fluid pressure in the tubing portion, andwherein the pressure sensor converts to an electronic signal a representation of the amount of deformation of the deformable element to measure the changing fluid pressure ...

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Номер записи: 50
28-02-2019 дата публикации

COMPOUND SENSOR

Номер: US20190064013A1
Автор: Kandori Atsushi
Принадлежит:

A compound sensor that is capable of being used with robotics is provided such that the compound sensor includes a distance measurement unit and a pressure measurement unit. Further, a contact detection unit, which is dedicated to performing a detection when a measurement target contacts with a surface of the sensor is included. 1. A compound sensor comprising:a distance measurement unit configured to measure a distance from a measurement target by transmitting an ultrasonic wave and receiving the ultrasonic wave returned from the measurement target;a pressure measurement unit configured to measure a pressure applied from the measurement target; anda contact detection unit configured to detect a presence of a contact with the measurement target.2. The compound sensor according to claim 1 , whereina vibrating membrane having a piezoelectric film is included in one or more of the distance measurement unit, the pressure measurement unit, or the contact detection unit.3. The compound sensor according to claim 1 , whereina vibrating membrane having an electrode and another electrode that faces the electrode is included in one or more of the distance measurement unit, the pressure measurement unit, or the contact detection unit.4. The compound sensor according to claim 3 , whereinone or more of the distance measurement unit, the pressure measurement unit, or the contact detection unit is a static capacitance type sensor.5. The compound sensor according to claim 1 , further comprisinga unit configured to switch between a distance measurement mode in which only the distance measurement unit operates, a pressure detection mode in which the pressure measurement unit operates, and a contact detection mode in which all the distance measurement unit, the pressure measurement unit, and the contact detection unit operate.6. The compound sensor according to claim 1 , further comprisinga shear force detection unit.7. The compound sensor according to claim 1 , whereinon a first ...

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Номер записи: 51
28-02-2019 дата публикации

Method Of Determining Stress Variations Over Time In An Undersea Pipe For Transporting Fluids

Номер: US20190064030A1
Автор: SUNDERMANN Axel
Принадлежит:

A method of determining stress variations over time in an undersea pipe for transporting fluids, the method comprising: installing along the entire length of the pipe () at least one distributed optical fiber sensor (- to -) using Rayleigh backscattering, the sensor being dedicated to measuring at least one degree of freedom of movement variation over time in the pipe at each cross section of the pipe; continuously measuring movement variation of the optical fiber sensor over time; and determining stress variations over time at each point in the pipe by time integration of the measured movement variation of the optical fiber sensor. 2. The method according to claim 1 , wherein the distributed optical fiber sensors are installed helically around the pipe.3. The method according to claim 1 , wherein the distributed optical fiber sensors are installed in straight lines around the pipe.4. The method according to claim 1 , comprising installing along the entire length of the pipe at least four distributed optical fiber sensors dedicated to measuring three degrees of freedom in rotation simultaneously with measuring one degree of freedom in movement of the pipe at each cross section of the pipe.5. The method according to claim 1 , further comprising installing along the entire length of the pipe an optical fiber pressure sensor for measuring pressure in the pipe.6. The method according to claim 5 , wherein the optical fiber pressure sensor is arranged in a straight line parallel to the longitudinal axis (X-X) of the pipe or helically around the pipe.7. The method according to claim 1 , further comprising installing along the entire length of the pipe an optical fiber temperature sensor for measuring temperature in the pipe.8. The method according to claim 1 , further comprising determining the movements over time at each point of the pipe by time and spatial integration of the measured movement variation of the optical fiber sensor situated on the section corresponding to ...

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Номер записи: 52
10-03-2016 дата публикации

Contact pressure measuring apparatus, method of manufacturing the same and method of measuring contact pressure

Номер: US20160069756A1
Автор: Joonhyung LEE, Sangkyu Kim, Seongho CHO
Принадлежит: SAMSUNG ELECTRONICS CO LTD

An apparatus and method for measuring a contact pressure and a method of manufacturing the apparatus. The apparatus includes: a material layer configured to provide a light path along which incident light travels to a subject being in contact with the material layer; a spectrum analyzer configured to detect light emitted from the material layer and perform a light absorption spectrum analysis on the detected light to determine an intensity of the detected light; and a pressure calculator configured to determine the contact pressure of the subject based on the determined intensity.

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Номер записи: 53
10-03-2016 дата публикации

BONDED STRUCTURE AND BONDING-CONDITION DETECTING METHOD

Номер: US20160069793A1
Автор: ABE Toshio, Minakuchi Shu, SAITO Nozomi, Shimizu Takayuki, Takeda Nobuo, UHIRA Keigo
Принадлежит:

A bonded structure () includes a laminate (A), a laminate (B), an adhesive () that bonds together the laminate (A) and the laminate (B), and an optical fiber () sandwiched between the laminate (A) and the laminate (B). When a pressure is applied to the optical fiber () only from a predetermined direction, the sectional shape of the optical fiber () changes to an elliptical shape, so that birefringence occurs, whereby the shape of the light spectrum changes so as to have multiple (e.g., two) peaks. The optical fiber () is used as a sensor for detecting the bonding condition between the laminate (A) and the laminate (B) based on this birefringence. Thus, with the bonded structure , it is possible to determine whether members are bonded together appropriately. 1. A bonded structure comprising:a first member;a second member;an adhesive that bonds together the first member and the second member; andan optical fiber sandwiched between the first member and the second member,wherein the bonding condition between the first member and the second member is detected based on birefringence of the optical fiber.2. A bonded structure according to claim 1 ,wherein the first member and the second member are laminates of carbon fiber composite materials, andwherein the bonding condition between the first member and the second member is detected based on birefringence of the optical fiber in a case where the first member and the second member are bonded together by using a pressurizing device.3. A bonded structure according to claim 2 , wherein the first member and the second member sandwiching the adhesive and the optical fiber are covered with a bag claim 2 , the pressure inside the bag is set to less than the atmospheric pressure claim 2 , and the bonding condition between the first member and the second member is detected based on birefringence of the optical fiber while a pressure is being applied inside an autoclave.4. A bonded structure according to claim 1 , wherein a solid ...

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Номер записи: 54
29-05-2014 дата публикации

Side-hole cane waveguide sensor

Номер: US20140147074A1
Автор: Alan D. Kersey, John L. Maida, Jr.
Принадлежит: Weatherford Lamb Inc

A side-hole optical cane for measuring pressure and/or temperature is disclosed. The side-hole cane has a light guiding core containing a sensor and a cladding containing symmetrical side-holes extending substantially parallel to the core. The side-holes cause an asymmetric stress across the core of the sensor creating a birefringent sensor. The sensor, preferably a Bragg grating, reflects a first and second wavelength each associated with orthogonal polarization vectors, wherein the degree of separation between the two is proportional to the pressure exerted on the core. The side-hole cane structure self-compensates and is insensitive to temperature variations when used as a pressure sensor, because temperature induces an equal shift in both the first and second wavelengths. Furthermore, the magnitude of these shifts can be monitored to deduce temperature, hence providing the side-hole cane additional temperature sensing capability that is unaffected by pressure. Additionally, the side-hole cane can be used to measure a differential pressure between a first pressure ported to the side-holes and a second external pressure.

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Номер записи: 55
08-03-2018 дата публикации

Method for monitoring environmental states of a microscope sample with an electron microscope sample holder

Номер: US20180068827A1
Автор: Daniel Stephen GARDINER, David P. Nackashi, II Franklin Stampley WALDEN, John Damiano, Jr., William Bradford Carpenter
Принадлежит: Protochips Inc

An apparatus and a method for measuring and monitoring the properties of a fluid, for example, pressure, temperature, and chemical properties, within a sample holder for an electron microscope. The apparatus includes at least one fiber optic sensor used for measuring temperature and/or pressure and/or pH positioned in proximity of the sample.

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Номер записи: 56
11-03-2021 дата публикации

Mechanical formwork pressure sensor for in-situ measurement of fluid pressure during concrete material placement and method of using the same

Номер: US20210072104A1
Автор: Tarek Alkhrdaji
Принадлежит: Structural Group Inc

Disclosed is a method and an apparatus for measuring the pressure of fresh concrete and similar liquid materials during placement, in which a movable component is displaced under the pressure of concrete or other liquids and is used as an indicator of the pressure exerted by the concrete or liquid material on the device. Mechanical resistance of the movable component is achieved using a calibrated spring or similar mechanical resistance element. The movable part consists of a pressure plate attached to a scaled cylindrical core, calibrated to provide measurements of the external concrete or liquid pressure. The movable component and mechanical resistance element are installed in a casing with flanges to attach the apparatus to the formwork or vessel.

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Номер записи: 57
07-03-2019 дата публикации

PRESSURE SENSING USING QUANTUM MOLECULAR ROTATIONAL STATE TRANSITIONS

Номер: US20190072447A1
Автор: Cook Benjamin Stassen, FRUEHLING Adam Joseph, Herbsommer Juan Alejandro, TROMBLEY DJANGO
Принадлежит:

A pressure transducer includes a cavity, a first dipolar molecule disposed within the cavity, and a second dipolar molecule disposed within the cavity. The first dipolar molecule exhibits a quantum rotational state transition at a fixed frequency with respect to cavity pressure. The second dipolar molecule exhibits a quantum rotation state transition at a frequency that varies with cavity pressure. 1. A pressure transducer , comprising:a cavity;a first dipolar molecule disposed within the cavity;a second dipolar molecule disposed within the cavity; the first dipolar molecule exhibits a quantum rotational state transition at a fixed frequency with respect to cavity pressure; and', 'the second dipolar molecule exhibits a quantum rotational state transition at a frequency that varies with cavity pressure., 'wherein2. The pressure transducer of claim 1 , wherein the fixed frequency is outside a range of the frequency that varies with cavity pressure.3. The pressure transducer of claim 1 , further comprising:a first antenna coupled to the cavity, wherein the first antenna is configured to transmit signal into the cavity; anda second antenna coupled to the cavity, wherein the second antenna is configured to receive signal from the cavity.4. The pressure transducer of claim 3 , further comprising detector circuitry coupled to the second antenna claim 3 , the detector circuitry configured to determine a frequency of peak absorption for the first dipolar molecule and a frequency of peak absorption for the second dipolar molecule.5. The pressure transducer of claim 4 , wherein the detector circuitry comprises:a phase-locked loop (PLL) configured to sweep a range of frequencies comprising the fixed frequency and the frequency that varies with cavity pressure; andfrequency identification circuitry configured to determine the frequency of peak absorption for the first dipolar molecule and the frequency of peak absorption for the second dipolar molecule based on the frequencies ...

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Номер записи: 58
07-03-2019 дата публикации

PRESSURE MEASUREMENT BASED ON ELECTROMAGNETIC SIGNAL OUTPUT OF A CAVITY

Номер: US20190072448A1
Автор: Cook Benjamin Stassen, FRUEHLING Adam Joseph, Herbsommer Juan Alejandro, Sankaran Swaminathan
Принадлежит:

A pressure transducer includes a cavity, dipolar molecules disposed within the cavity, and pressure measurement circuitry. The pressure measurement circuitry is configured to measure a width of an absorption peak of the dipolar molecules, and to determine a value of pressure in the cavity based on the width of the absorption peak. 1. A pressure transducer , comprising:a cavity;dipolar molecules disposed within the cavity; measure a width of an absorption peak of the dipolar molecules; and', 'determine a value of pressure in the cavity based on the width of the absorption peak., 'pressure measurement circuitry configured to2. The pressure transducer of claim 1 , wherein the absorption peak is at a frequency of quantum rotational state transition of the dipolar molecules.3. The pressure transducer of claim 1 , further comprising:a first antenna coupled to the cavity, wherein the first antenna is configured to transmit signal into the cavity; anda second antenna coupled to the cavity, wherein the second antenna is configured to receive signal from the cavity.4. The pressure transducer of claim 3 , wherein the pressure measurement circuitry is coupled to the second antenna claim 3 , the pressure measurement circuitry configured to determine a range of frequencies corresponding to the absorption peak.5. The pressure transducer of claim 4 , wherein the pressure measurement circuitry is configured to:detect a leading edge of the absorption peak;detect a trailing edge of the absorption peak;determine the range of frequencies based on a difference in frequency corresponding to the leading edge and frequency corresponding to the trailing edge.6. The pressure transducer of claim 1 , wherein the width of the absorption peak increases with pressure in the cavity.7. The pressure transducer of claim 4 , wherein the pressure measurement circuitry comprises:a phase-locked loop (PLL) configured to sweep a range of frequencies comprising the absorption peak; andfrequency ...

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Номер записи: 59
31-03-2022 дата публикации

SEAT ASSEMBLY HAVING AN ADJUSTABLE HEAD RESTRAINT

Номер: US20220095811A1
Автор: Arabnejad Sajad, Duncan Bradley C., GALLAGHER David, Hein David A., HUMER Mladen, RINKE Dean, Yetukuri Arjun
Принадлежит: LEAR CORPORATION

A seat assembly with an adjustable head restraint assembly capable of being adjusted based on an approximate stature or spatial location of an occupant in the seat assembly. A seat assembly may include a sensor in the seat to detect if an occupant is present. The sensor may include a plurality of bladders and pressure sensors, a radar system, or a neuro-monitoring sensor. The sensor may send a signal to a controller indicating the presence of an occupant. The controller may approximate the size and/or spatial location of the occupant and send an adjustment signal to the head restraint adjustment mechanism to adjust the head restraint assembly to an in-use position. The controller may determine that an occupant is not present and send an adjustment signal to the head restraint adjustment mechanism to adjust the head restraint assembly to a non-use position. 1. A seat assembly comprising:a seat back;an adjustable head restraint assembly connected to the seat back; anda sensor located in the seat assembly and adapted to detect when an occupant is present in the seat assembly and causes adjustment of the head restraint assembly based on a sensed or estimated size and spatial location of the occupant.2. The seat assembly of claim 1 , wherein the sensor is a bladder system including a plurality of bladders capable of measuring a pressure.3. The seat assembly of claim 2 , wherein the plurality of bladders is linearly arranged on the seat back.4. The seat assembly of claim 2 , wherein the plurality of bladders is arranged in an arcuate path along the seat back.5. The seat assembly of claim 1 , wherein the sensor is capable of identifying and/or measuring a biometric signal.6. The seat assembly of claim 5 , wherein the biometric signal is a heart beat claim 5 , a respiratory signal claim 5 , and/or a neurological signal.7. The seat assembly of claim 5 , wherein the sensor is a radar sensor.8. The seat assembly of claim 1 , wherein the sensor is located in or on the head ...

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Номер записи: 60
14-03-2019 дата публикации

SYSTEM AND METHOD FOR MONITORING THE HEALTH OF STRUCTURES AND MACHINES USING FIBER BRAGG GRATING (FBG)

Номер: US20190078949A1
Автор: Brewer Andre, Hung Henry, Yun Leijun
Принадлежит:

An optical-based system for sensing parameters of a structure or machine for monitoring the health of the structure or machine. The optical-based system includes a set of optical fibers, each optical fiber including a set of fiber Bragg grating (FBG) sensors for sensing a set of parameters of the object; a set of interrogators configured to generate a set of incident optical signals for transmission via the set of optical fibers, respectively, receive a set of reflected optical signals from each of the optical fibers of the set, and generate a set of data related to sensed parameters of the object based on the set of reflected optical signals; and a controller configured to control the set of interrogators. Via a user interface or a remote computer on a cloud, sensing instructions may be provided to the controller, and sensed data and other information may be received from the controller. 1. An apparatus , comprising:at least one optical fiber including at least one fiber Bragg Grating (FBG) sensor coupled to or situated proximate an object; generate at least one incident optical signal for transmission via the at least one optical fiber, respectively;', 'receive at least one reflected optical signal from each of the at least one optical fiber; and', 'generate data of at least one sensed parameter of the object based on at least one wavelength of the at least one reflected optical signal; and, 'at least one interrogator configured toa controller configured to control the at least one interrogator.2. The apparatus of claim 1 , wherein the controller is configured to control a rate at which the at least one incident optical signal is transmitted via the at least one optical fiber.3. The apparatus of claim 1 , wherein the controller is configured to control a bandwidth of the at least one incident optical signal transmitted via the at least one optical fiber.4. The apparatus of claim 1 , wherein the controller is configured to process the data to generate additional ...

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Номер записи: 61
22-03-2018 дата публикации

METHOD OF CONTROLLING PRESSURE IN A FUEL ROD

Номер: US20180082758A1
Автор: Löf Helmersson Pontus, Rostvall Thomas
Принадлежит: WESTINGHOUSE ELECTRIC SWEDEN AB

A method and a system includes controlling and monitoring the gas pressure in a nuclear fuel rod during filling of the fuel rod with a gas, and subsequent sealing of the fuel rod. The system includes a control unit and a length measuring system, which control unit is communicatively connected to the length measuring system. The length measuring system is configured to monitor the length of the fuel rod, and the control unit is configured to receive measurements from the length measuring system and to determine the gas pressure inside the fuel rod on the basis of variations of the length of the fuel rod. The method includes positioning an open first end of the fuel rod inside a pressure chamber, allowing gas to enter the fuel rod; pressurizing the gas in the pressure chamber at a first pressure level; closing the fuel rod; and sealing the fuel rod. 113-. (canceled)14. A method of controlling the pressure of a gas inside a fuel rod , said method comprising:positioning a first end of the fuel rod inside a pressure chamber, which first end is an open end and allows gas to enter the fuel rod;pressurizing a gas in the pressure chamber at a first pressure level so that the fuel rod is filled with gas and pressurized at the first pressure level;closing the first end of the fuel rod;sealing the fuel rod; andmonitoring the variation of the length of the fuel rod, which monitoring is performed between the step of closing and the step of sealing the fuel rod, and using the length variation as a measure of the gas pressure variation inside the fuel rod.15. The method of controlling the pressure according to claim 14 , wherein after the step of closing the fuel rod claim 14 , said method comprises:releasing the pressure in the pressure chamber to a second pressure level; andmaintaining the second pressure in the pressure chamber during a first time period T while performing said monitoring of the variation of the length of the fuel rod; and wherein the step of sealing is ...

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Номер записи: 62
25-03-2021 дата публикации

DISTRIBUTED INTRAVASCULAR FIBER BRAGG PRESSURE SENSOR

Номер: US20210085198A1
Автор: Mueller Manfred, Schleipen Johannes Joseph Hubertina Barbara
Принадлежит: KONINKLIJKE PHILIPS N.V.

The present invention relates to a pressure sensing device () comprising an optical fiber (), the optical fiber () comprises a central axis (L) and at least one optical fiber core (), the at least one optical fiber core () having one or more reflective FBG structures, and a coating () surrounding the optical fiber (), the coating () having mechanical properties which are radially asymmetric along the central axis (L). 1. Pressure sensing device comprising:an optical fiber comprising a central axis (L) and at least one optical fiber core, the at least one optical fiber core having one or more reflective FBG structures, and{'sub': 1', '2', '1', '2, 'a coating surrounding the optical fiber, the coating comprising a first annular subsection extending through a first annular sector with azimuth φand a second annular subsection extending through a second annular sector with azimuth φ, wherein the mechanical properties of the first and second annular subsections are different, and wherein the azimuths φand φcomplementarily vary along a portion of the central axis (L).'}2. Pressure sensing device of claim 1 , wherein the pressure sensing device is adapted to determine multiple local pressures along the central axis claim 1 , the local pressures exerting radial forces on the coating.3. Pressure sensing device of claim 1 , wherein the difference between thermal expansion coefficients of the first annular section and the second annular section is below 10% and the difference between Poisson ratios of the first annular section and the second annular is larger than 75%.4. Pressure sensing device of claim 1 , wherein the first and second annular subsections are disposed staggered along the central axis (L) claim 1 , forming at least two longitudinal sections.5. Pressure sensing device of claim 4 , wherein each of the at least two longitudinal sections encompasses at least one reflective FBG structure.6. Pressure sensing device of claim 1 , wherein the azimuths φand φcontinuously ...

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Номер записи: 63
12-03-2020 дата публикации

System and method for recognition of the gesture of bringing a mobile electronic device to a user ear

Номер: US20200081546A1
Автор: Federico Rizzardini, Stefano Paolo Rivolta
Принадлежит: STMICROELECTRONICS SRL

A system recognizes a gesture of bringing a mobile electronic device to a user ear. The system may be integrated in the mobile electronic device and is provided with a movement sensor which provides a movement signal indicative of the movement of the mobile electronic device. A pressure sensor provides a pressure signal indicative of a pressure acting on the mobile electronic device during the movement. A processing stage performs a joint processing of the movement signal and of the pressure signal in order to recognize the gesture.

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Номер записи: 64
25-03-2021 дата публикации

Ludion Pressure Measurement System

Номер: US20210088399A1
Автор: Aaron Wiest, Craig Andrew MacDougall
Принадлежит: US Department of Navy

Systems and methods for pressure measurement are provided. A ludion with a trapped gas bubble floats between two liquids. Pressure acting upon the liquids causes the bubble to expand or contract, resulting in movement of the ludion which can be measured and correlated with pressure change. Pressure measuring device can measure pressures from 0.05 inHg to 110 inHg with a four-to-one Test Accuracy Ratio (TAR) without using mercury.

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Номер записи: 65
31-03-2016 дата публикации

CO2-CONCENTRATION SENSOR FOR INTERIOR USE

Номер: US20160091472A1
Автор: MOENKEMOELLER Ralf
Принадлежит:

A sensor arrangement for determining the COconcentration in an interior space has an NDIR sensor unit that can determine the number of COmolecules on an optical measuring section and therefrom the COconcentration in an interior space. The sensor arrangement further has an evaluation unit that can calculate the air pressure from measurement values of the NDIR sensor unit and that can carry out an air-pressure compensation on the basis of the value calculated for the air pressure or of an air pressure correction value calculated therefrom for the measurement value of the COconcentration determined by the NDIR sensor unit. 1. A sensor arrangement for determining the COconcentration in an interior space , with an NDIR sensor unit that can determine the number of COmolecules on an optical measuring section and therefrom the COconcentration in an interior space , characterized in that the sensor arrangement has an evaluation unit that can calculate the air pressure from measurement values of the NDIR sensor unit and that can carry out an air-pressure compensation on the basis of the value calculated for the air pressure or of an air pressure correction value calculated therefrom for the measurement value of the COconcentration determined by the NDIR sensor unit.2. The sensor arrangement defined in claim 1 , further comprising:a temperature sensor that can determine the temperature in the interior space,{'sub': '2', 'a temperature compensation unit that can, on the basis of the measurement value determined by the temperature sensor, carry out a temperature compensation for the measurement value of the COconcentration determined by the NDIR sensor unit.'}3. The sensor arrangement defined in claim 1 , further comprising:a ventilation system that can expose the optical measuring section with fresh outside air such that, on the basis of the value calculated for the air pressure of the fresh air outside the interior space, the air pressure correction value can be adapted for ...

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Номер записи: 66
31-03-2016 дата публикации

MULTI-COMPONENT SENSING COATING FOR PRESSURE AND TEMPERATURE MEASUREMENTS

Номер: US20160091475A1
Автор: MCLEAN James Douglas, Ponomarev Sergey G.
Принадлежит:

An environment sensitive coating system is disclosed that includes a pressure sensitive component comprising a first portion of an oxygen sensitive light emitting material dispersed in an oxygen permeable binder; and a pressure reference component comprising a second portion of the oxygen sensitive light emitting material dispersed in an oxygen impermeable binder. 1. An environment sensitive coating system , comprising:a pressure sensitive component comprising a first portion of an oxygen sensitive light emitting material embedded in an oxygen permeable binder; anda pressure reference component comprising a second portion of the oxygen sensitive light emitting material embedded in an oxygen impermeable binder.2. The environment sensitive coating system of claim 1 , wherein the pressure sensitive component and the pressure reference component each have a lateral dimension less than 0.1 mm and a thickness less than 0.1 mm.3. The environment sensitive coating system of claim 2 , wherein the oxygen permeable binder comprises a first portion of an oxygen permeable component and a first portion of an oxygen impermeable component.4. The environment sensitive coating system of claim 3 , wherein the oxygen impermeable binder comprises a second portion of the oxygen permeable component and a second portion of the oxygen impermeable component.5. The environment sensitive coating system of claim 4 , wherein the oxygen permeable binder is a reaction product of the first portion of the oxygen permeable component and the first portion of the oxygen impermeable component and the oxygen impermeable binder is a reaction product of the second portion of the oxygen permeable component and the second portion of the oxygen impermeable component.6. A method of applying an environment sensitive coating system to a substrate claim 4 , comprising:applying a pressure sensitive component comprising a first portion of an oxygen sensitive light emitting material embedded in an oxygen permeable ...

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Номер записи: 67
21-03-2019 дата публикации

PROXIMITY SENSOR, LITHOGRAPHIC APPARATUS AND DEVICE MANUFACTURING METHOD

Номер: US20190086202A1
Автор: Estafanous, GUAN Tiannan, ZEKRY Joseph Eid
Принадлежит:

A gas gauge proximity sensor comprising a measurement gas flow channel having an optical pressure sensor for comparing a pressure of the first gas flow and a reference pressure; the optical pressure sensor comprising a first optical cavity fluidly connected to the measurement channel and a second optical cavity fluidly connected to the reference pressure, with the optical cavities being configured to receive electromagnetic radiation and output reflected electromagnetic radiation, the optical pressure sensor further being configured to combine the reflected electromagnetic radiation from the first optical cavity with the reflected electromagnetic radiation from the second optical cavity and determine, based on the combined electromagnetic radiation, a pressure difference between the pressure of the first gas flow and the reference pressure and determine, based on the pressure difference, a distance between the measurement outlet and the measurement object. 114-. (canceled)15. Apparatus comprising:a measurement gas flow channel having a measurement outlet, the measurement gas flow channel being configured to output a first gas flow towards a measurement object; andan optical pressure sensor for comparing a pressure of the first gas flow towards the measurement object with a reference pressure, the optical pressure sensor comprising a first optical cavity fluidly connected to the measurement channel and a second optical cavity fluidly connected to the reference pressure, the first optical cavity being configured to output first reflected electromagnetic radiation and the second optical cavity being configured to output second reflected electromagnetic radiation, the optical pressure sensor being further configured to combine the first reflected electromagnetic radiation with the second reflected electromagnetic radiation and determine, based on the combined first reflected electromagnetic radiation and the second reflected electromagnetic radiation, a pressure ...

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Номер записи: 68
19-03-2020 дата публикации

FIBER BRAGG GRATING MULTI-POINT PRESSURE SENSING GUIDEWIRE WITH BIREFRINGENT COMPONENT

Номер: US20200085325A1
Автор: Haverdings Michael Benjamin, Hayes John Michael, van Leest Matheus Maria
Принадлежит:

A system and method are presented for detecting and measuring pressure within a region of a body lumen or vessel. The pressure sensing system includes a light source for transmitting light through a pathway containing polarization-maintaining fiber optic wires. A distal portion of the polarization-maintaining fiber optic wire, which is engaged to and extends along a guidewire, includes pressure sensing station(s) made up of fiber Bragg gratings (FBG). The light transmitted to and reflected from the FBGs on the two polarization modes of the polarization-maintaining fiber optic wire can be analyzed to provide one or more pressure values. 1. A pressure sensing system configured to detect a pressure in the vasculature of a patient , the pressure sensing system comprising: i) a light source;', 'ii) a circulator optically connected to the light source by a first proximal polarization-maintaining fiber optic wire;', 'iii) a polarization controller optically connected to the circulator opposite the light source by a second proximal polarization-maintaining fiber optic wire;', 'iv) a polarization beam splitter optically connected to the circulator opposite the polarization controller by a third proximal polarization-maintaining fiber optic wire; and', 'v) a reflected light receiver optically connected to the polarization beam splitter opposite the circulator by a fourth proximal polarization-maintaining fiber optic wire and a fifth proximal polarization-maintaining fiber optic wire; and, 'a) a proximal assembly, comprising i) a guidewire; and', 'ii) a distal polarization-maintaining fiber optic wire supported by the guidewire, wherein the distal polarization-maintaining fiber optic wire has at least one fiber Bragg grating (FBG) pressure sensing station that is exposable to environment pressure adjacent thereto; and, 'b) a distal assembly, comprising i) a proximal housing containing a proximal single-mode fiber optic wire, the proximal single-mode fiber optic wire extending ...

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Номер записи: 69
01-04-2021 дата публикации

Optical blood pressure measurement devices and methods

Номер: US20210093209A1
Автор: Jun-Ming Chen, Kuang-Fu Chang, Leng-Chun Chen, Wen-Pin Shih, Yu-Chi Wang
Принадлежит: Cardio Ring Technologies Inc

The present invention provides a wearable device for monitoring blood-pressure.

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Номер записи: 70
19-03-2020 дата публикации

Optical Fibre Pressure Sending Apparatus Employing Longitudinal Diaphragm

Номер: US20200088597A1
Автор: AINGER Michael
Принадлежит: Nuron Limited

An apparatus for producing strain in an optical fibre proportional to dynamic pressure fluctuation in the surrounding substance. The apparatus includes a diaphragm having a first face that, in use, is exposed to dynamic pressure fluctuations in the substance, and a second, opposite face, the diaphragm being adapted to flex in response to dynamic pressure fluctuations applied to it. One or more optical fibres are mounted on either the first or the second face of the diaphragm, whereby strain is produced in the fibre when the diaphragm flexes. 125.-. (canceled)26. An apparatus for producing strain in at least one optical fibre proportional to dynamic pressure fluctuation in the surrounding substance , the apparatus comprising:a diaphragm having a first face that, in use, is exposed to dynamic pressure fluctuations in the substance, and a second, opposite face, the diaphragm being adapted to flex in response to dynamic pressure fluctuations applied to it; and{'sup': '2', 'at least one optical fibre mounted on either said first or said second face of the diaphragm, whereby strain is produced in the at least one fibre when the diaphragm flexes, wherein the length of the diaphragm is at least 1×10times the width of the diaphragm and the at least one optical fibre extends longitudinally along the diaphragm and wherein the thickness of the diaphragm is in the range 0.5-50 mm.'}27. An apparatus according to claim 26 , wherein the length of the diaphragm is at least 10times the thickness of the diaphragm and the at least one optical fibre extends longitudinally along the diaphragm.28. An apparatus according to claim 26 , wherein the thickness of the diaphragm is no more than ½ the width of the diaphragm.29. An apparatus according to claim 26 , wherein the flexure of the diaphragm is oscillatory claim 26 , the period of the oscillations being dependent on the frequency of the dynamic pressure fluctuation.30. An apparatus according to wherein the thickness claim 26 , width and ...

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Номер записи: 71
26-06-2014 дата публикации

System for measuring pressure and temperature

Номер: US20140174187A1
Автор: Andreas Bjerknes Taranrod, David Christian Petersen, Harald Borgen, Jan Martin Bendiksen, Marius BORNSTEIN, Morten Roll Karlsen, Petter F. Schmedling, Tor Helge Brandsaater, Trond Sjulstad
Принадлежит: Techni AS

The present invention relates to system for measuring pressure and temperature based on change in the characteristic properties of a medium for ultrasound under the effect of pressure and temperature. The invention is based on two waveguides where geometry is adapted to the medium's characteristic properties for ultrasound such that only planar pressure waves are generated in the waveguides. The first of the waveguides is arranged for measuring temperature due to thermal expansion of the medium, where the medium is pressure-compensated by means of an internal compensator to prevent thermal pressure accumulation, and where measuring temperature is based on the medium's specific known characteristic data for ultrasound under the effect of temperature under constant pressure. The second waveguide is arranged for measuring pressure, based on waveguide and the medium's known characteristic properties for thermal expansion and pressure, and where the thermal effect is corrected analytically based on measurement of temperature in the first channel. The physical principle of the invention is based on the properties of a medium (oil) where the stability for high temperature and pressure is crucial for long-term properties. Long-term properties of ultrasound sensors are not physically linked to the medium's properties, such that change in characteristic properties of ultrasound sensors does not impair the accuracy of the medium unless the function of the ultrasound sensors ceases. The physical principle of the invention allows an arrangement where ultrasound sensors can be separated from measuring channels by a pressure barrier, such that the integrity of the pressure barrier is not broken.

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Номер записи: 72
12-05-2022 дата публикации

A method for forming a pressure sensor

Номер: US20220143941A1
Автор: Crispin Doyle
Принадлежит: Halliburton Energy Services Inc

A method for forming a pressure sensor is provided wherein an optical fibre is provided, the optical fibre comprising a core, a cladding surrounding the core, and a birefringence structure for inducing birefringence in the core. The birefringence structure comprises first and second holes enclosed within the cladding and extending parallel to the core. A portion of the optical fibre comprising the core and the birefringence structure is encased within a chamber, wherein the chamber is defined by a housing comprising a pressure transfer element for equalising pressure between the inside and the outside of the housing. An optical sensor is provided along the core of the optical fibre. Providing the optical sensor comprises optically inducing stress in the core so that the optical sensor exhibits intrinsic birefringence. The chamber is filled with a substantially non-compressible fluid. Consequently, the birefringence structure is shaped so as to convert an external pressure provided by the non-compressible fluid within the chamber to an anisotropic stress in the optical sensor.

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Номер записи: 73
09-04-2015 дата публикации

Aircraft fluid gauging techniques using pressure measurements and optical sensors

Номер: US20150100253A1
Автор: Howard P. Austerlitz, Lewis J. Boyd, Ronald W. Bueter, Stanley Wood
Принадлежит: Parker Hannifin Corp

A fluid level measurement system includes a first pressure sensor disposed inside a fluid tank at a first elevation relative to a height axis of the fluid tank, and a second pressure sensor disposed inside the fluid tank at a second elevation relative to the height axis of the fluid tank, the second elevation different from the first elevation. The first pressure sensor and the second pressure sensor are configured to provide a signal indicative of a sensed pressure, and fluid height is calculated from the difference in sensed pressure between the first and second pressure sensors relative to the sensed pressure of either the first or the second pressure sensor.

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Номер записи: 74
01-04-2021 дата публикации

PRESSURE SENSING DEVICE ISOLATION CAVITY SEAL MONITORING

Номер: US20210096036A1
Автор: Korolev Eugene, Schulte John Paul
Принадлежит:

An industrial process differential pressure sensing device includes a housing having first and second isolation cavities that are respectively sealed by first and second diaphragms, a differential pressure sensor, a static pressure sensor, an eddy current displacement sensor, and a controller. The static pressure sensor is configured to output a static pressure signal that is based on a pressure of fill fluid in the first isolation cavity. The differential pressure sensor is configured to output a differential pressure signal that is indicative a pressure difference between the first and second isolation cavities. The eddy current displacement sensor is configured to output a position signal that is indicative of a position of the first isolation diaphragm relative to the housing. The controller is configured to detect a loss of a seal of the isolation cavity based on the position signal, the static pressure signal and the differential pressure signal. 1. An industrial process differential pressure sensing device comprising:a housing including a first isolation cavity and a fill fluid contained in the first isolation cavity, and a second isolation cavity and a fill fluid contained in the second isolation cavity;a first isolation diaphragm configured to seal a process interface of the first isolation cavity from a process medium;a second isolation diaphragm configured to seal a process interface of the second isolation cavity from the process medium;a static pressure sensor configured to output a static pressure signal that is based on a pressure of the fill fluid in the first isolation cavity;a first eddy current displacement sensor configured to output a first position signal indicative of a position of the first isolation diaphragm relative to the housing;a differential pressure sensor exposed to sensor interfaces of the first and second isolation cavities and configured to output a differential pressure signal that is indicative of a difference in pressure ...

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Номер записи: 75
05-04-2018 дата публикации

SYSTEM AND METHOD FOR DETERMINING THE INTEGRITY OF CONTAINERS BY OPTICAL MEASUREMENT

Номер: US20180095000A1
Автор: DILLNER Joachim, Karlsson Daniel, Lewander Xu Märta, Lundin Patrik, Swartling Johannes
Принадлежит: GasPorOx AB

A method and system is disclosed for determining the integrity of a closed container. The method and system includes the steps of positioning the container in a surrounding, changing a gas pressure, a gas composition, a gas concentration, or any combination of gas pressure, gas concentration and gas composition, in the surrounding. Thereafter subjecting the container to an optical sensor, non-intrusively, the sensor being sensitive to at least one gas, and the sensor is configured for detecting the at least one gas inside the container. Reading a signal from the optical sensor related to a gas pressure, a gas concentration, a gas composition, or any combination of gas pressure, gas concentration, and gas composition, inside the container. The behaviour of the signal being indicative of breach in integrity of the container. 1. A method of determining the integrity of a closed container , said method comprising:positioning said container in a surrounding;changing a gas pressure, a gas composition, a gas concentration, or any combination of gas pressure, gas concentration and gas composition, in said surrounding;subjecting said container to an optical sensor, non-intrusively, said sensor being sensitive to at least one gas, and said sensor is configured for detecting said at least one gas inside said container;reading a signal from said optical sensor related to a gas pressure, a gas concentration, a gas composition, or any combination of gas pressure, gas concentration, and gas composition, inside said container; the behaviour of said signal being indicative of breach in integrity of said container.2. The method according to claim 1 , in which a vacuum or underpressure is applied in said surrounding.3. The method according to claim 1 , in which overpressure is applied in said surrounding.4. The method according to claim 1 , in which a gas or mix of gases is applied in said surrounding.5. The method according to claim 1 , in which any combination of the following steps ...

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Номер записи: 76
12-05-2022 дата публикации

VACUUM INSULATOR AND SYSTEM FOR TESTING THE SAME

Номер: US20220146353A1
Автор: HIRANO Toshiaki, KAGIMOTO MASAHIRO, Kakita Kenichi, KAWARAZAKI Hideji, KOJIMA Shinya, Okawa Masafumi
Принадлежит:

A vacuum insulator () includes: a core (); a pressure sensor () that detects a pressure; a transmitter () that transmits, by wireless communication, the detected pressure detected by the pressure sensor (); a power feeder () that feeds electric power to the pressure sensor () and the transmitter (); and an outer skin (), an inside of which is decompressed, the outer skin () accommodating therein the core (), the pressure sensor (), the transmitter (), and the power feeder (), the outer skin () having gas barrier capability. 1. A vacuum insulator comprising:an outer skin formed of a non-metal material;a core;a pressure sensor that detects a pressure; anda transmitter that transmits, by wireless communication, the detected pressure detected by the pressure sensor, whereinthe vacuum insulator is in a shape of a box, and includes a lower wall and four side walls, andthe transmitter is provided on the lower wall.29-. (canceled)10. The vacuum insulator according to claim 1 , further comprising a power feeder that feeds electric power to the pressure sensor and the transmitter.11. The vacuum insulator according to claim 10 , whereinthe power feeder includes a power receiving coil that receives electric power transmitted from an external power transmitting coil, andthe power feeder feeds the electric power received from the power transmitting coil to the pressure sensor and the transmitter.12. The vacuum insulator according to claim 1 , further comprising a wireless vacuum gauge device provided on the lower wall claim 1 , the wireless vacuum gauge device including at least the pressure sensor and the transmitter.13. The vacuum insulator according to claim 12 , whereinthe wireless vacuum gauge device further includes a power feeder that feeds electric power to the pressure sensor and the transmitter.14. The vacuum insulator according to claim 13 , whereinthe power feeder includes a power receiving coil that receives electric power transmitted from an external power ...

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Номер записи: 77
26-03-2020 дата публикации

Optical fiber pressure sensor

Номер: US20200093384A1
Автор: David J. SPAMER, Diana Margaret Tasker, Howard Neil Rourke, Michael J. Eberle
Принадлежит: Phyzhon Health Inc

The disclosure includes an apparatus for insertion into a body lumen. The apparatus can comprise an optical fiber pressure sensor. The optical fiber pressure sensor can comprise an optical fiber configured to transmit an optical sensing signal. A temperature compensated Fiber Bragg Grating (FBG) interferometer can be in optical communication with the optical fiber. The FBG interferometer can be configured to receive a pressure and modulate, in response to the received pressure, the optical sensing signal. A compliant member such as a sensor membrane can be in physical communication with the FBG interferometer. The membrane configured to transmit the received pressure to the FBG interferometer.

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Номер записи: 78
26-03-2020 дата публикации

Use of optical fiber sensor as a diagnostic tool in catheter-based medical devices

Номер: US20200093973A1
Автор: Rahul Suresh Gandhi, Tao Zhang
Принадлежит: Abiomed Inc

A blood pump system including an optical sensor configured to detect an optical signal during pumping operation of the blood pump, and an optical fiber configured to transmit the optical signal from the optical fiber sensor to an evaluation device communicatively coupled to the optical fiber sensor. The evaluation device is configured to receive as inputs the transmitted optical signal and a signal indicative of the motor current and determine a mechanical failure event associated with the blood pump based on the motor current and the optical signal.

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Номер записи: 79
14-04-2016 дата публикации

SINGLE DYNAMIC PRESSURE SENSOR BASED FLAME MONITORING OF A GAS TURBINE COMBUSTOR

Номер: US20160103039A1
Автор: Claussen Heiko, Flohr Patrick Ronald, Momin Zainul, Ulerich Nancy H.
Принадлежит:

The state of a flame in a gas turbine combustor is acoustically monitored using a single dynamic pressure sensor within the combustor. A dynamic pressure sensor output signal is received from the single sensor and is processed to determine a flame status. The signal is processed by performing an autocorrelation operation to identify time-separated portions of the signal and to determine that the time-separated portions of the signal include portions indicative of acoustic oscillations emitted by the flame in the gas turbine engine combustor and received directly by the single acoustic sensor, and portions indicative of reflections. 1. A method for monitoring a flame in a gas turbine engine combustor , comprising:receiving a dynamic pressure sensor output signal from a single acoustic sensor positioned in the gas turbine engine combustor, the output signal being indicative of acoustic oscillations within the gas turbine engine combustor;performing an autocorrelation operation on the dynamic pressure sensor output signal to identify time-separated portions of the signal having autocorrelation values;based on the autocorrelation values, making a determination whether the time-separated portions of the signal include portions indicative of acoustic oscillations emitted by the flame in the gas turbine engine combustor and received directly by the single acoustic sensor, and portions indicative of reflections of the acoustic oscillations emitted by the flame; andbased on the determination, determining whether a flame is present in the gas turbine engine combustor.2. The method of claim 1 , further comprising:filtering the dynamic pressure sensor output signal to exclude frequencies outside an expected frequency range emitted by the flame in the gas turbine engine combustor.3. The method of claim 1 , further comprising:after performing the autocorrelation operation, filtering the time-separated portions of the signal to exclude portions having a delay range longer than a ...

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Номер записи: 80
12-04-2018 дата публикации

FLIGHT PARAMETER MEASURING DEVICE WITH OPTICAL DEFORMATION SENSORS CARRIED BY THE RADOME OF AN AIRCRAFT

Номер: US20180100776A1
Автор: BERNUS Christophe, BOISSON THOMAS, BULANCEA Andrei, ESTEVE Nathalie, FONTAINE Alain, PORET Cécile, REDON Jean
Принадлежит:

A device for measuring at least one flight parameter such as the airspeed, the sideslip angle or the angle of attack, or any other parameter dependent thereon, of an aircraft including a radome, including systems for measuring the deformation of the radome wall due to forces exerted by the air on the radome and a computer for computing from deformation measurements obtained by the systems the required flight parameter or parameters. The systems include at least one optical fiber carried by the radome provided with Bragg gratings, each fiber including a plurality of Bragg gratings distributed over a length of the fiber so as to distribute the Bragg gratings over the radome when the fiber is installed. 1. A device for measuring at least one flight parameter of an aircraft including a radome , comprising:systems for measuring the deformation of a wall of the radome due to forces exerted by the air on the radome, and 'the systems including at least one optical fiber carried by the radome provided with Bragg gratings, each fiber including a plurality of Bragg gratings distributed over a length of the fiber so as to distribute the Bragg gratings over the radome when the fiber is installed.', 'a computer configured to compute, from deformation measurements obtained by said systems, said at least one flight parameter,'}2. The measuring device according to claim 1 , wherein the at least one flight parameter is selected from the group consisting of an airspeed claim 1 , a sideslip angle or an angle of attack of the aircraft claim 1 , and any other parameter dependent on the airspeed claim 1 , the sideslip angle or the angle of attack of the aircraft.3. The measuring device according to claim 1 , wherein the fiber is integrated into an interior of the radome wall.4. The measuring device according to claim 1 , wherein a block of foam is provided between skins of the radome wall so as to join the skins claim 1 , the block of foam being provided at a level of at least one Bragg ...

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Номер записи: 81
12-04-2018 дата публикации

DEVICE FOR MEASURING THE PRESSURE OF A FLUID FLOWING THROUGH A PIPELINE

Номер: US20180100777A1
Автор: Gasch Armin, Szasz Paul, Zucchi Roberto
Принадлежит:

In an embodiment, the present invention provides a device for measuring the pressure p of a fluid flowing through a pipeline, including: at least one primary sensor arranged on an outer periphery of the pipeline for measuring a primary physical measured variable which is dependent on the pressure p, the absolute value of the pressure p being obtainable by offsetting said primary physical measured variable against at least one calibration datum, the at least one calibration datum relating to the geometry and/or to at least one material property of the pipeline; and a calibration datum determining unit and an evaluation unit for determining the pressure p from the primary physical measured variable in conjunction with the calibration datum. The calibration datum determining unit includes a measuring pipe which can be fluidically connected to the pipeline, which differs from the rest of the pipeline in material and/or in cross-sectional geometry. 1. A device for measuring the pressure p of a fluid flowing through a pipeline , comprising:at least one primary sensor arranged on an outer periphery of the pipeline being configured to measure a primary physical measured variable which is dependent on the pressure p, the absolute value of the pressure p being obtainable by offsetting said primary physical measured variable against at least one calibration datum, the at least one calibration datum relating to the geometry and/or to at least one material property of the pipeline; anda calibration datum determining unit and an evaluation unit configured to determine the pressure p from the primary physical measured variable in conjunction with the calibration datum, a measuring pipe which can be fluidically connected to the pipeline, which differs from the rest of the pipeline in material and/or in cross-sectional geometry, and for which the calibration datum is known, the primary sensor being arranged on an outer periphery of the measuring pipe; and/or', 'at least one ...

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Номер записи: 82
26-03-2020 дата публикации

APPARATUS FOR MEASURING CONVERGENCE USING FBG SENSOR AND SENSITIVITY AND DURABILITY REGULATION METHOD THEREOF

Номер: US20200096323A1
Автор: LEE Geum Suk
Принадлежит:

Disclosed are an apparatus for measuring a displacement using a fiber Bragg grating sensor, which is applied to a strain sensor using the fiber Bragg grating sensor, and a method of controlling sensitivity and durability of the same. The apparatus includes: a case forming an external appearance; third and fourth optical fibers having mutually different numbers of strands and installed in the case while being spaced apart from each other by a predetermined interval; and a connection unit installed between the third and fourth optical fibers and fixed at a predetermined position by tension applied to the third and fourth optical fibers, wherein the fiber Bragg grating sensor is installed to one selected from the pair of optical fibers having mutually different numbers of strands, so that measurement sensitivity and durability are controllable. 1. An apparatus for measuring a displacement using a fiber Bragg grating sensor , which is applied to an acceleration sensor using the fiber Bragg grating sensor , the apparatus comprising:a case forming an external appearance;first and second optical fibers installed in the case in a vertical direction while being spaced apart from each other by a predetermined interval; anda weight applier installed between the first and second optical fibers to apply a weight to the first and second optical fibers,wherein a degree and a direction of acceleration are measured by using a variation of a wavelength output from the fiber Bragg grating sensor installed to one of the first and second optical fibers as the weight applier moves upwardly or downwardly due to a vibration of a measurement object.2. The apparatus of claim 1 , further comprising first and second installation members disposed between upper and lower ends of the case claim 1 , wherein respective ends of the first and second optical fibers are connected to the respective first and second installation members claim 1 , andeach of the weight applier and the first and second ...

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Номер записи: 83
02-06-2022 дата публикации

SYSTEM AND METHOD TO DETERMINE TEMPERATURE COMPENSATED PRESSURE OF A PRESSURE TRANSDUCER

Номер: US20220170798A1
Автор: DOyly-Watkins David Christopher
Принадлежит: BAE SYSTEMS plc

A system to determine a temperature corrected pressure of a medium in a pressure transducer is disclosed. The system comprises a first circuitry to obtain a first value related to a vibration frequency of the vibration of a pressure sensitive vibration member; a second circuity to obtain a second value related to a vibration amplitude of the vibration of the vibration member; and a third circuity to use the first value and the second value to determine the temperature corrected pressure of the medium based on a predetermined relationship between the vibration frequency and the vibration amplitude. 1. A system to determine a temperature corrected pressure of a medium in a pressure transducer , the system comprising:a first circuitry to obtain a first value related to a vibration frequency of the vibration of a pressure sensitive vibration member;a second circuitry to obtain a second value related to a vibration amplitude of the vibration of the vibration member; anda third circuitry to use the first value and the second value to determine the temperature corrected pressure of the medium based on a pre-determined relationship between the vibration frequency and the vibration amplitude.2. The system according to claim 1 , wherein the vibration member is formed of substantially at least one metal and/or at least one metal alloy.3. The system according to claim 2 , wherein the at least one metal and/or metal alloy comprises an alloy comprising at least one of Ni claim 2 , Fe claim 2 , Cr claim 2 , Al and Ti.4. The system according to claim 1 , wherein at least one of the vibration amplitude and vibration frequency is amplified by an amplifying circuit.5. The system according to claim 4 , wherein the system is configured to obtain the vibration amplitude prior to a capping and/or filtering operation by the amplifying circuit.6. The system according to claim 1 , wherein the vibration member is substantially hollow and/or substantially cylindrical.7. A pressure transducer ...

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Номер записи: 84
21-04-2016 дата публикации

PRESSURE DETECTING APPARATUS MADE BY 3D PRINTING TECHNOLOGIES BEING ABLE TO BE USED IN DANGEROUS AREAS

Номер: US20160109316A1
Автор: Chiang Chia-Chin, Hsieh Tso- Sheng
Принадлежит:

A pressure detecting apparatus made by 3D printing technologies being able to be used in dangerous areas is provided. It mainly comprises a light source, a processor, a coupler, and at least one pressure transducer. The pressure transducer comprises a main body and a fiber grating. The fiber grating comprises a fiber Bragg grating sensor, and the fiber grating is fixed on the main body and covers the fiber Bragg grating sensor. When the main body is placed in a fluid area, the fluid would flow through the opening to deform the strain layer and generate a strain variation on the fiber Bragg grating sensor to cause a signal variation in the reflection frequency spectrum. The coupler is configured to couple to the light source and the pressure transducer to decode the signal variation into pressure parameters. 2. The pressure detecting apparatus made by 3D printing technologies being able to be used in dangerous areas as claimed in claim 1 , wherein the fiber Bragg grating sensor is located on the fiber grating of the first compartment claim 1 , or respectively located in the first compartment and the second compartment.3. The pressure detecting apparatus made by 3D printing technologies being able to be used in dangerous areas as claimed in claim 1 , wherein the fiber Bragg grating sensor is formed in the strain layer inside the shell of the main body claim 1 , and the two sides of the fiber grating are fixed on the two sides of the center line of the cross axis of the main body claim 1 , the fiber grating is fixed on the strain layer claim 1 , and the two ends of the fiber grating extend out from the main body.4. The pressure detecting apparatus made by 3D printing technologies being able to be used in dangerous areas as claimed in claim 1 , wherein the pressure transducer is selected from immersion pressure transducer claim 1 , differential pressure transducer claim 1 , and pressure transducer used in detecting fuel storage warehouse claim 1 , boiler warehouse claim ...

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Номер записи: 85
29-04-2021 дата публикации

Electronic device and system and method for diving

Номер: US20210122448A1
Автор: Kui MA
Принадлежит: Shenzhen Zhilan Technology Co Ltd

A control method of an electronic device system for diving is provided. The control method includes steps of sending a positioning request signal to the slave device; receiving a feedback signal sent by the slave device, the feedback signal is generated by the slave device responding to the positioning request signal, the feedback signal includes water pressure data; according to the time difference between the sending time of the positioning request signal and the receiving time of the feedback signal, and the signal transmission speed, the relative distance with the slave device is calculated; obtaining the relative direction between the slave device and the master device according to the incoming direction of the feedback signal received by the ultrasonic receiver; calculating the relative depth with the slave device according to the water pressure data in the feedback signal. Furthermore, an electronic device and system for diving are also provided.

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Номер записи: 86
05-05-2016 дата публикации

SYSTEM AND METHOD FOR WIND TURBINE OPERATION

Номер: US20160123307A1
Автор: Drack Lorenz Edwin, Patil Pratish, Petitjean Benoit Philippe
Принадлежит:

A method for determining a flow condition includes disposing a plurality of sensors on a surface and receiving a first sensor signal and a second sensor signal from the plurality of sensors. The method further includes determining at least one correlation parameter based on the first sensor signal and the second sensor signal. The method also includes receiving a plurality of stored parameters from a database, wherein each of the plurality of stored parameters is representative of a corresponding flow condition. The method also includes comparing the at least one correlation parameter with the plurality of stored parameters and selecting at least one matching stored parameter and determining a matching flow condition based on the at least one matching stored parameter. 1. A method , comprising:disposing a plurality of sensors on a surface;receiving a first sensor signal and a second sensor signal from the plurality of sensors;determining at least one correlation parameter based on the first sensor signal and the second sensor signal;receiving a plurality of stored parameters from a database, wherein each of the plurality of stored parameters is representative of a corresponding flow condition;comparing the at least one correlation parameter with the plurality of stored parameters and selecting at least one matching stored parameter; anddetermining a matching flow condition based on the at least one matching stored parameter.2. The method of claim 1 , wherein the plurality of sensors comprises one of a plurality of pressure sensors and a plurality of velocity sensors.3. The method of claim 1 , wherein the surface is a blade surface of a wind turbine.4. The method of claim 3 , further comprising determining at least one of a pitch angle claim 3 , a tip speed ratio claim 3 , an angle of attack and an angular speed corresponding to the blade surface based on the matching flow condition.5. The method of claim 3 , wherein disposing the plurality of sensors comprises ...

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Номер записи: 87
05-05-2016 дата публикации

Pass-throughs for use with sensor assemblies, sensor assemblies including at least one pass-through and related methods

Номер: US20160123830A1
Автор: G. Scott Brown, K. Robert Harker, Scott S. Merkley
Принадлежит: Clove Park Insurance Co, Quartzdyne Inc

Transducer assemblies may include a sensor and a housing including a pass-through portion comprising at least one aperture in a portion of the housing extending along a longitudinal axis of the housing and the sensor. Methods of forming transducer assemblies may include welding a first housing section of the transducer assembly to a second housing portion of the transducer assembly and forming at least one aperture in the first housing section extending along a longitudinal axis of the transducer assembly, along a chamber for holding a sensor, and through the weld.

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Номер записи: 88
24-07-2014 дата публикации

OPTICAL SENSOR

Номер: US20140202253A1
Автор: Fasham Stephen James, Harpin Arnold Peter Roscoe, Tyler Stephen Geoffrey
Принадлежит: OXSENSIS LTD

An optical sensor is disclosed for measuring pressure and/or temperature. The optical sensor is adapted for use in high temperature environments, such as gas turbines and other engines. The optical sensor comprises an optical assembly having a sensor element, a spacer and a lens arranged along the optical axis. The sensor element is spaced from the lens by the spacer. An optical fibre is coupled to the optical assembly for illuminating the sensor element. The optical assembly is resiliently mounted in a housing such that the optical assembly is insulated from shock to the housing. There is also disclosed a method of assembling the optical sensor. 1. An optical sensor , comprising:an optical assembly comprising a sensor element, a spacer and a lens arranged along an optical axis, the sensor element spaced from the lens by the spacer;an optical fibre coupled to the optical assembly for illuminating the sensor element;a housing to provide mechanical protection to the optical assembly,wherein the optical assembly is resiliently mounted in the housing such that the optical assembly is insulated from shock to the housing.2. The optical sensor of claim 1 , wherein the sensor element is adapted for use at a first temperature claim 1 , the lens and optical fibre are configured for use up to a second temperature lower than the first temperature.3. The optical sensor of claim 2 , wherein the sensor element is spaced from the lens and fibre by the spacer so as to provide a thermal gradient from the sensor element to the lens and fibre when in use.4. The optical sensor of claim 1 , wherein the optical assembly is resiliently mounted along a single line transverse to the optical axis.5. The optical sensor of claim 1 , wherein the optical assembly is resiliently mounted in the housing at a plurality of points along a line claim 1 , the line transverse to the optical axis.6. The optical assembly of claim 5 , wherein the points of mounting are on the spacer.7. The optical assembly ...

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Номер записи: 89
03-05-2018 дата публикации

METHODS FOR MEASURING PRESSURE IN FREEZE DRYING SYSTEMS

Номер: US20180120026A1
Автор: Finley Steven
Принадлежит:

An improved method for determining pressure in a lyophilisation system containing a lyophilisation chamber and a condenser chamber wherein a freeze drying operation is being performed is provided for. The improved method uses a temperature measuring device such as a thermocouple or a temperature resistance device to measure temperature and from this measurement the pressure of the components in the lyophilisation chamber can be calculated using a predetermined relationship between temperature and pressure. 1. An improved method for determining pressure in a lyophilisation system wherein a freeze drying operation is being performed , the improvement comprising measuring temperature in the lyophilisation system and calculating pressure of the lyophilisation system therefrom using a predetermined relationship between temperature and pressure.2. The method as claimed in wherein the lyophilisation system comprises a lyophilisation chamber and a condenser chamber.3. The method as claimed in wherein the temperature is measured with a device selected from the group consisting of a thermocouple and a resistance temperature device.4. The method as claimed in wherein the pressure is calculated from the temperature according to the formula:5. The method as claimed in wherein water claim 1 , nitrogen and air are present in the lyophilisation system.6. The method as claimed in wherein the condenser chamber contains a condenser coil.7. The method as claimed in wherein the condenser chamber is in fluid communication with a vacuum pump.8. An improved freeze drying method in a lyophilisation system claim 2 , the improvement comprising measuring temperature in the lyophilisation system and calculating pressure of the lyophilisation system therefrom.9. The method as claimed in wherein the lyophilisation system comprises a lyophilisation chamber and a condenser chamber.10. The method as claimed in wherein the temperature is measured with a device selected from the group consisting of a ...

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Номер записи: 90
03-05-2018 дата публикации

High Pressure Processing Pressure Sensor

Номер: US20180120275A1
Автор: Lyle D. Small, Ruizheng Wang, Timothy J. Owen
Принадлежит: Chromatic Technologies Inc

A pressure sensor and its use for visually determining whether a preselected pressure threshold has been achieved, for example during high pressure processing treatment of a foodstuff The pressure sensor includes a contained color-changing system having a dye, a developer, and a solvent; upon achievement of the preselected pressure threshold, the dye and the developer interact, resulting in a visible color change. Further, the visible color change can be retained upon a decrease in pressure and upon an increase in temperature, thereby effectively recording the achievement of the preselected pressure threshold during the high pressure processing treatment.

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Номер записи: 91
04-05-2017 дата публикации

Sensors Having Multiple Fiber-Grating Sensing Elements That Provide Differing Responses to an Environmental Input and Related Systems and Methods

Номер: US20170122826A1
Автор: David J. Woodcock, Eric Udd
Принадлежит: Wicor Holding AG

Sensors for measuring an environmental input, such as force or moisture, that include fiber-grating sensing elements having differing responses to the environmental input such that the differing responses can be used to effectively solve multiple equations, representing the differing responses, for two unknowns representing, respectively, the environmental input and temperature. The differing responses can be due to any one or more of a variety of factors, including sensor elements having differing effective areas, materials of differing cure states, differing fiber grating wavelengths, differing sensitive materials, asymmetrical deployments, and differing numbers of load balancing elements, among others. Sensor systems employing such sensors and methods of utilizing such sensors are also disclosed.

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Номер записи: 92
04-05-2017 дата публикации

Optical pressure sensor

Номер: US20170122828A1
Автор: Fabrice F. M. MAILLAUD, Ralf-Dieter Pechstedt
Принадлежит: OXSENSIS LTD

An optical pressure sensor is disclosed having a pressure sensing optical cavity. A temperature sensing optical cavity at the sensing head is used by an interrogator to correct a pressure signal for effects of temperature. The optical cavities may be, for example, Fabry Perot cavities in the sensor head.

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Номер записи: 93
12-05-2016 дата публикации

Method and applications of thin-film membrane transfer

Номер: US20160130138A1
Автор: Annie I-Jen Wang, Apoorva Murarka, Jeffrey Hastings LANG, Vladimir Bulovic, Wendi CHANG
Принадлежит: Massachusetts Institute of Technology

The disclosure relates to method and apparatus for micro-contact printing of micro-electromechanical systems (“MEMS”) in a solvent-free environment. The disclosed embodiments enable forming a composite membrane over a parylene layer and transferring the composite structure to a receiving structure to form one or more microcavities covered by the composite membrane. The parylene film may have a thickness in the range of about 100 nm-2 microns; 100 nm-1 micron, 200-300 nm, 300-500 nm, 500 nm to 1 micron and 1-30 microns. Next, one or more secondary layers are formed over the parylene to create a composite membrane. The composite membrane may have a thickness of about 100 nm to 700 nm to several microns. The composite membrane's deflection in response to external forces can be measured to provide a contact-less detector. Conversely, the composite membrane may be actuated using an external bias to cause deflection commensurate with the applied bias. Applications of the disclosed embodiments include tunable lasers, microphones, microspeakers, remotely-activated contact-less pressure sensors and the like.

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Номер записи: 94
31-07-2014 дата публикации

MEMS RESONATOR PRESSURE SENSOR

Номер: US20140208857A1
Автор: Besling Willem Frederik Adrianus, Phan Le Kim
Принадлежит: NXP B.V.

A resonant MEMS pressure sensor in which the resonator mass of the MEMS resonator is anchored both to the fixed base beneath the resonator cavity as well as to the top membrane over the resonator cavity. This provides a more robust fixing of the resonator mass and offers a dependence of resonant frequency on the pressure outside the cavity. 1. A pressure sensor comprising:a MEMS resonator formed within a cavity, wherein the cavity comprises a fixed base and a top membrane which deforms in response to the pressure (P) to be sensed, wherein the resonator has a resonant frequency which is dependent on the incident pressure,wherein the MEMS resonator comprises a resonator mass which is anchored both to the fixed base and the top membrane.2. A pressure sensor as claimed in claim 1 , wherein the MEMS resonator comprises a beam with at least one anchor at each end claim 1 , wherein at least one anchor is attached to the top membrane and at least one anchor is attached to the fixed base.3. A pressure sensor as claimed in claim 2 , wherein the MEMS resonator comprises two anchors at each end of the beam claim 2 , a first which connects to the fixed base and a second which connects to the top membrane claim 2 , wherein the first anchor at one end is on an opposite lateral side of the beam to the first anchor at the other end claim 2 , and the second anchor at one end is on an opposite lateral side of the beam to the second anchor at the other end.4. A pressure sensor as claimed in claim 2 , wherein the MEMS resonator comprises one anchor at each end of the beam claim 2 , one of which connects to the fixed base and the other of which connects to the top membrane5. A pressure sensor as claimed in claim 1 , wherein the MEMS resonator comprises a frame with a set of parallel beams extending across the frame and each beam anchored at its middle.6. A pressure sensor as claimed in claim 5 , wherein there are four parallel beams claim 5 , with two at one lateral side of the frame and ...

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Номер записи: 95
31-07-2014 дата публикации

High stable fiber fabry-perot pressure sensor with glue-free packing and its fabrication method

Номер: US20140208858A1
Автор: Jiang Junfeng, LIU Kun, Liu Tiegen, Liu Yu, Yin Jinde
Принадлежит:

The present invention relates to a high stable fiber fabry-perot pressure sensor with glue-free packing and its fabrication method. The sensor includes a sensor head, a sensor body with a through-hole in the axial direction and a optical fiber. The sensor head is a 4-layer structure, which includes the first silicon wafer, the first Pyrex glass wafer, the second silicon wafer and the second Pyrex glass wafer. The rear surface of the first silicon wafer forms the first reflecting surface of the fabry-perot (F-P) cavity, and the second silicon wafer provides the second reflecting surface for the F-P cavity. The second Pyrex glass wafer is welded together with the sensor body. The optical fiber is fixed in the sensor body by a COlaser welding to achieve the glue-free packing When the external pressure is applied to deform the first layer silicon wafer, the F-P cavity length will change. When a broad band source is used, the variation of the cavity length can be obtained by collecting the reflection spectrum or low-coherence interference fringe of the sensor, thus the pressure information can be obtained. The structure of the invention can effectively eliminate the affect of environmental factors, such as temperature and humidity, and greatly promoting the measuring accuracy. 1. A high stable fiber fabry-perot pressure sensor with glue-free packing , comprising:A sensor head:The sensor head is a 4-layer structure. The first layer is the first silicon wafer, which is used as an elastic diaphragm for sensing the pressure. The rear surface of the first silicon wafer forms the first reflecting surface of the fabry-perot(F-P) cavity. The second layer is the first Pyrex glass wafer which has been shaped as a ring with a through hole in the axis; the thickness of the first Pyrex glass wafer determines the original length of the F-P cavity. The third layer is the second silicon wafer which is used to form the second reflecting surface of the F-P cavity. The forth layer is the ...

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Номер записи: 96
21-05-2015 дата публикации

PULSE LASER GENERATOR AND OPTICAL FIBER SENSOR SYSTEM USING SAME

Номер: US20150138531A1
Автор: Joo Ki Nam, LEE Ho Jae
Принадлежит:

Disclosed are a pulse laser generator and an optical fiber sensor system using the same. The optical fiber sensor system includes a main optical coupler that receives pulse laser light generated from a pulse laser generator from a first input terminal, branches the light to first and second output terminals to output, and outputs, through a third output terminal, light input reversely from the first and second output terminals, a reference optical fiber that is connected to the first output terminal, a multi-point sensing optical fiber unit that is connected to the second output terminal, and in which optical fibers are connected in series or in parallel corresponding to a plurality of sensing points, an optical detection unit that is connected to the third output terminal, and a diagnosis processing unit that detects a change of the physical quantity for the sensing points from signals from the optical detection unit. 1. An optical fiber sensor system using a pulse laser , comprising:a pulse laser generator that generates and outputs pulse laser light;a main optical coupler that receives the pulse laser light generated and outputted from the pulse laser generator from a first input terminal, branches the received light to a first output terminal and a second output terminal to output the branched light, and outputs, through a third output terminal, light input reversely from each of the first output terminal and the second output terminal;a reference optical fiber that is connected to the first output terminal and reflects light input through the main optical coupler to provide a reference optical signal, and extends by a predetermined length as an optical fiber;a multi-point sensing optical fiber unit that is connected to the second output terminal, and in which optical fibers are connected in series or in parallel corresponding to a plurality of sensing points so as to measure a physical quantity to be measured for each of the plurality of sensing points;an ...

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Номер записи: 97
31-07-2014 дата публикации

SYSTEM AND METHOD FOR BIO-OPTICAL ENVIRONMENTAL RECONNAISSANCE

Номер: US20140214323A1
Автор: Book Jeffrey W., Gould Richard W., Harrington J. Carey, Hughes Emery W., Hulbert Mark S., McCormick Berry L., McNeal David N., Quaid Andrew J., Smith Richard H.
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System for collecting ocean data includes a trawl-resistant bottom mooring having a base unit and profiler on board. Method for collecting ocean data includes steps for receiving and executing a configuration file in the base unit and the profiler, collecting data, transmitting the data to a receiving station, and transferring to and archiving the data in the base unit. 1. A bottom mooring for enabling ocean measurement data comprising:a base unit having trawl-resistant dimensions and a trawl-resistant structure;a profiler including a plurality of optical sensors, an antenna and communications equipment transmitting the ocean measurement data collected by the sensors to a receiving station through the antenna;a cable attaching the profiler to the base unit;a controller and winch controlling ascent of the profiler from the base unit to a water surface, the controller controlling timing and sampling frequency of the ocean measurement data;an enclosure system surrounding the optical sensors on the profiler protecting the bio-optical sensors from bio-fouling;at least one profiler battery mounted in the profiler and powering the antenna, the CTD sensor, and the optical sensors;an acoustic Doppler current profiler (ADCP) in electronic communications with the base unit; anda base unit battery set mounted in the base unit powering an on-board computer and the winch, the base unit battery set inductively charging the at least one profiler battery.2. The bottom mooring as in wherein the trawl-resistant dimensions comprise about a 2-meter footprint and a 1-meter height.3. The bottom mooring as in wherein the trawl-resistant structure comprises circularity claim 1 , smoothness claim 1 , no edges claim 1 , and drainage holes.4. The bottom mooring as in wherein the profiler comprises a conductivity-temperature-depth (CTD) sensor claim 1 , a fluorescence triplet sensor measuring chlorophyll claim 1 , phycoerythrin claim 1 , and colored dissolved organic matter fluorescence claim 1 ...

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Номер записи: 98
21-05-2015 дата публикации

OPTICAL SENSOR

Номер: US20150139451A1
Автор: Fischer Balthasar, Reining Friedrich, Wintner Ernst
Принадлежит: XARION LASER ACCOUSTICS GMBH

A device comprising measurement () and reference () interferometers is disclosed. Each interferometer is configured to receive light from the same light source () and to emit light to respective detectors () and has a respective operating point. The measurement interferometer () is configured to respond to variations in a physical parameter by varying the intensity of light emitted, whereas the reference interferometer () is configured to be unresponsive to variations in the physical parameter. The device further comprises a signal processor for generating a differential output signal depending on respective output signals generated by the detectors (). 1. A device comprising measurement and reference interferometers , each configured to receive light from the same light source and to emit light to respective detectors and having a respective operating point , wherein the measurement interferometer is configured to respond to variations in a physical parameter by varying the intensity of light emitted , whereas the reference interferometer is configured to be unresponsive to variations in the physical parameter , the device further comprising a signal processor for generating a difference output signal depending on respective output signals generated by the detectors.2. The device according to claim 1 , wherein the signal processor comprises a difference amplifier and a preceding gain stage for dynamical adjustment of the DC levels of the respective output signals generated by the detectors.3. The device according to claim 1 , wherein the measurement and/or reference interferometers are Fabry-Perot interferometers claim 1 , each preferably using mechanically rigid and/or immovable elements.4. The device according to claim 3 , wherein the measurement and/or reference interferometers comprise a pair of spaced apart mirrors claim 3 , preferably mechanically rigid and/or immovable mirrors.5. The device according to claim 1 , further comprising a thermal tuning element ...

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Номер записи: 99
31-07-2014 дата публикации

Electronic Valve Position Indicator

Номер: US20140214341A1
Автор: JR. David Duane, Rogers
Принадлежит:

An apparatus includes a valve having at least two input ports. A first of the at least two input ports connected to a first source of material and a second of the at least two input ports connected to a second source of material. The also valve includes an output port and a valve selector for selectively connecting one of the at least two input ports to the output port. An electric circuit selectively connects an output device to receive data from a first sensor associated with the first source of material that senses at least one characteristic associated with the first source of material when the valve selector is in a first position connecting the first of the two input ports to the output port, and a second sensor associated with a second source of material that senses at least one characteristic associated with the second source of material when the valve selector is in a second position connecting the second of the two input ports to the output port. 1. An apparatus comprising: at least two input ports, a first of the at least two input ports connected to a first source of material and a second of said at least two input ports connected to a second source of material;', 'an output port; and', 'a valve selector for selectively connecting one of the at least two input ports to the output port;, 'a valve including'} a first sensor associated with the first source of material that senses at least one characteristic associated with the first source of material when said valve selector is in a first position connecting the first of the two input ports to the output port, and', 'a second sensor associated with a second source of material that senses at least one characteristic associated with the second source of material when the valve selector is in a second position connecting the second of the two input ports to the output port., 'an electric circuit that selectively connects an output device to receive data from2. The apparatus according to claim 1 , further ...

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Номер записи: 100