相控阵声柱

封装条（方孔）

Automobile brake system's brake fluid needs liquid measure testing arrangement

... 本实用新型公开了一种汽车制动系统的制动液需液量测试装置，包括：空腔圆管、直线位移传感器、工字型活塞和金属杆；空腔圆管的两端分别与制动硬管和制动软管的接口螺纹连接；在空腔圆管内设置有一工字型活塞；工字型活塞与空腔圆管过渡配合；在工字型活塞的连接杆上垂直设置有一金属杆；在金属杆的顶端设置有直线位移传感器，且直线位移传感器的滑块与金属杆顶端固定在一起；直线位移传感器与空腔圆管内壁固定连接。本实用新型原理简单，可操作性强，精确度高，适用于小流量大压力制动需液量的准确测试。 ...

Piezoelectric ceramic driving array and surface shape adjusting method

The invention provides a piezoelectric ceramic driving array and a surface shape adjusting method, the piezoelectric ceramic driving array comprises a bottom plate electrode layer, a piezoelectric ceramic array and an insulating layer which are stacked in sequence, and the bottom plate electrode layer comprises bottom plate electrodes arranged in an array; the piezoelectric ceramic array comprises at least one layer of piezoelectric ceramic array unit, the multiple layers of piezoelectric ceramic array units are arranged in a stacked mode, and each layer of piezoelectric ceramic array unit comprises a positive electrode layer and a negative electrode layer which are arranged in a stacked mode. The positive electrode layer comprises a first piezoelectric ceramic sheet and a positive electrode array formed on the surface of the first piezoelectric ceramic sheet, and the negative electrode layer comprises a second piezoelectric ceramic sheet and a negative electrode array formed on the surface ...

METHOD AND APPARATUS FOR EXTRACTING ACOUSTIC IMAGE BODY OF SOUND SOURCE IN 3D SPACE

The present invention provides a method and apparatus for extracting an acoustic image body of a sound source in 3D space, and includes: determining the space position of the acoustic image of the sound source; determining a loudspeaker beside the space position in which the acoustic image of the sound source exists according to the obtained space position of the acoustic image of the sound source (ρ,μ,η); calculating, in a horizontal and vertical direction, the correlation of signals in each sound track from the selected loudspeaker; obtaining and saving the parameter set {ICH, ICV, Min{ICH, ICV}} of the acoustic image body, wherein Min{ICH, ICV} means a minor value between ICH and ICV. The present invention provides technical support for accurately restoring the size of the acoustic image of the sound source in a 3D audio broadcast system by obtaining expression parameters of the acoustic image body, and solves the technical problem that the present restored acoustic image of 3D audio ...

柔性电池单元

Shield tunneling machine cutterhead excavation diameter detection system and detection method

The shield tunneling machine cutterhead excavation diameter detection system comprises an oil cylinder, an oil pipe, a sensor, a signal cable and a shield tunneling machine control center, an oil cylinder body is connected to the inner wall of a cutterhead ring plate, an oil cylinder ejector rod is provided with an initial position where the oil cylinder ejector rod retracts to the outer circumferential face of a cutterhead and a detection position where the oil cylinder ejector rod abuts against the inner wall of a tunnel, and the oil pipe is arranged along a cutterhead reversing frame spoke. The sensor is arranged on the cylinder body, the signal cable is arranged in the pressure-resistant pipe in a penetrating mode and is formed by sequentially connecting three sections, the first section is arranged along with an oil pipe, the second section and the third section are connected through the socket and the plug, the ejector rod abuts against the inner wall of a tunnel, and the sensor detects ...

OIL AND GAS PIPELINE SCADA SYSTEM

The present disclosure relates to the field of oil and gas pipelines, and in particular to an oil and gas pipeline SCADA system. The system comprises a memory and a processor, wherein the memory is used for storing a computer program; the processor is used for executing the computer program stored in the memory; the computer program comprises a basic service module, a pipeline process procedure monitoring module and a pipeline regulation and control support service module; the basic service module is used for realizing data acquisition, flow control and accident condition processing for a remote terminal of a pipeline and a monitored object by means of a data communication specification; the pipeline process procedure monitoring module is used for monitoring a process procedure of an oil and gas pipeline based on process operation characteristics and control requirements of the oil and gas pipeline, and monitoring an advanced application of the pipeline; and the pipeline regulation and ...

METHOD AND SYSTEM FOR MEASURING DISTANCE TO LEADING VEHICLE

A method and a system for measuring the distance to a leading vehicle. The method for measuring the distance to a leading vehicle comprises: acquiring an RGB image and a depth image at a front viewing angle of a vehicle (S101); setting a target area frame in the RGB image (S102); extracting size data corresponding to a plurality of vehicles in the RGB image (S103); for each of the plurality of vehicles, according to the size data of the vehicle, determining a constraint frame of the vehicle in the RGB image (S104), calculating an overlapping ratio of the constraint frame of the vehicle to the target area frame (S105), calculating a normalized distance between the vehicle and the target area frame on the basis of the size data of the vehicle, the position of the constraint frame of the vehicle in the RGB image, and the position of the target area frame in the RGB image (S106); and according to the overlapping ratio and normalized distance corresponding to each of the plurality of vehicles ...

PIN CONNECTOR AND METHOD FOR PREPARING SAME

A PIN connector, comprising a PIN (1) and a fastening assembly (2) provided at the periphery of the PIN. The PIN comprises a PIN body (11), and a first contact end (12) and a second contact end (13) respectively provided at both ends of the PIN body. The fastening assembly comprises a first fastener (21) and a second fastener (22) connected to the first fastener. The first fastener is provided adjacent to the first contact end, and the second fastener is provided adjacent to the second contact end. A method for preparing a PIN connector comprises: preparing a plurality of PINs; preparing a first fastener by means of metal injection molding; providing the plurality of PINs and the first fastener in a mold corresponding to a second fastener, and preparing the second fastener by means of injection molding, so that the second fastener is connected to the plurality of PINs and the first fastener to prepare the PIN connector. The method for preparing the PIN connector is simple in process and ...

CALCIUM ION SECONDARY CELL, AND MANUFACTURING METHOD THEREOF

A calcium ion secondary cell, and manufacturing method thereof. The cell comprises a positive electrode, an electrolyte solution (30), a negative electrode (50), and a separator membrane (40). The positive electrode comprises a positive electrode current collector (10) and a positive electrode active material layer (20) provided on the positive electrode current collector (10). The positive electrode active material layer (20) comprises a positive electrode active material, and the positive electrode active material comprises one or more of a carbon material, sulfide, nitride, oxide, carbide, and a composite of the aforementioned materials. The electrolyte solution (30) comprises a calcium salt and a nonaqueous solvent. The negative electrode (50) comprises a metal foil serving as a negative electrode current collector and a negative electrode active material. The secondary cell employs a calcium salt as an electrolyte to lower costs, and provide a high operation voltage, high capacity, ...

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蓄电池外壳

Steel truss supporting structure for conical concrete roof of squat silo and construction method of steel truss supporting structure

The invention relates to the technical field of steel trusses, and discloses a squat silo conical concrete roof steel truss supporting structure which comprises squat silo bodies and a plurality of first fixing seats, the circumferential inner walls of the squat silo bodies are fixedly connected with the multiple steel truss bodies, and two avoiding grooves are formed in the tops of the steel truss bodies; two ring beams are fixedly connected in the avoiding groove; the invention further provides a construction method of the squat silo conical concrete roof steel truss supporting structure, and the construction method comprises the following steps that S1, positioning is conducted, specifically, the position, needing to be supported, of a squat silo is determined according to a construction plan; s2, calculation: calculating the load borne by the supporting structure and the distribution condition according to the position needing to be supported. The supporting effect of the device can ...

Method for recovering metallic tin from selective iron oxide tin alloy

The invention relates to the technical field of metal recovery, in particular to a method for recovering metallic tin from a selective iron oxide tin alloy. In order to solve the problem that tin volatilization is hindered due to the fact that materials containing tin and iron are prone to forming iron-tin alloy in the roasting process, the method for recovering the metallic tin through the selective iron oxide-tin alloy comprises the steps that sulfuration gas and weak oxidizing gas are introduced in the roasting process of the materials containing tin and iron at the same time; and the gas-phase oxygen partial pressure or the gas-phase CO2/CO partial pressure is controlled, so that an iron component in the iron-tin alloy is selectively oxidized, a tin component in the iron-tin alloy further reacts with the sulfurized gas to be volatilized into smoke dust, and tin recovery is achieved.

Air conditioner water heater main machine fusion body with complementary L-shaped external heat exchanger structure and combined air path

The invention discloses an air conditioner and water heater host fusion body with complementary L-shaped external heat exchanger structure and combined air paths. An air conditioner host heat exchanger and a water heater host heat exchanger are combined; an air conditioner external heat exchanger refrigerating medium pipeline system and an air energy water heater external heat exchanger refrigerating medium pipeline system are arranged in a plurality of L-shaped external heat exchanger fin plate sets which are arranged side by side. The air conditioner refrigerating medium circulation loop and the air energy water heater refrigerating medium circulation loop are communicated with an air conditioner compressor and an air energy water heater compressor respectively to form an air conditioner refrigerating medium circulation loop and an air energy water heater refrigerating medium circulation loop, that is, the air conditioner refrigerating medium circulation loop and the air energy water ...

CV-QKD continuous variable quantum key distribution polarization compensation method and system

The invention discloses a CV-QKD continuous variable quantum key distribution polarization compensation method and system, and the method comprises the steps: introducing reference light 1 and reference light 2, and estimating the polarization state of quantum signal light through the polarization variation of the reference light alternately appearing in two polarization directions; specifically, time division multiplexing is carried out on quantum light and reference light 1 according to a preset proportion in the vertical polarization direction, polarization multiplexing is carried out on the quantum light and reference light 1 and reference light 2 in the horizontal polarization direction, and meanwhile, missing pilot frequency light data are complemented through an interpolation method, so that two adjacent groups of reference light data are used for estimating the polarization variation of quantum signal light. According to the invention, by introducing the reference light, phase recovery ...

ALBUM DISPLAY METHOD AND DEVICE

The present disclosure relates to the technical field of graphical images and discloses an album display method and device. The method comprises: acquiring facial recognition information of n pictures from a server, the facial recognition information comprising: a picture identifier and an album identifier of the face album of the picture, wherein n is a positive integer; adding n picture(s) to a corresponding face album respectively based on the corresponding album identifier of each picture; and displaying the face album. The present disclosure acquires different face albums by clustering based on a face in a picture, enabling management and display of pictures in a mobile terminal on the basis of different faces. The present invention addresses a problem in the related art in which an album application can only manage and display a picture based on source, time, and address of the picture, enabling the album program to manage and display pictures according to faces.

METHOD AND SYSTEM FOR DISPLAYING MICRO BLOG MESSAGE, MICRO BLOG TERMINAL, MICRO BLOG SERVER, AND STORAGE MEDIUM

Disclosed in an embodiment of the present invention is a method for displaying micro blog messages, comprising: when a user queries a group name list, a micro blog terminal sends a group name list acquisition request to a micro blog server, and receives and displays the group name list of the user returned by the micro blog server; when the user selects any one micro blog group from the group name list, the micro blog terminal writes the name of the selected micro blog group in a new message display page, sends a message list acquisition request to the micro blog server, receives the message list of the selected micro blog group returned by the micro blog server, and displays the message list in the new message display page. Also disclosed in the embodiment of the present invention are a system for displaying a micro blog message, a micro blog terminal, a micro blog server and a storage medium. According to the present invention, messages on micro blog homepage can be effectively organized ...

Control method and control equipment of refrigeration equipment based on remote communication technology

The invention provides a control method and control equipment of refrigeration equipment based on a remote communication technology. The control method of the refrigeration equipment based on the remote communication technology comprises the steps that detection data reported by controlled refrigeration equipment are collected in a network transmission mode; configuration information of the controlled cold equipment is obtained, and a controlled execution component of the controlled cold equipment is matched according to the configuration information; generating a control instruction of the controlled execution component according to the detection data; and the control instruction is sent to the controlled cold equipment so as to be executed by the controlled execution component. According to the scheme provided by the invention, the control instruction of the controlled cold equipment is directly provided by the network side service equipment, so that the hardware cost of the controlled ...

Virtual simulation system and method for medical ultrasonic operation training

The invention discloses a virtual simulation system and method for medical ultrasonic operation training. The system comprises a simulation patient model; the magnetic field generation module is used for generating a direct-current magnetic field; the simulation ultrasonic probe comprises a sensor module, and the pose of the simulation ultrasonic probe is represented by the pose of the sensor module; the ultrasonic probe fixing bracket is used for initializing the pose of the simulation ultrasonic probe; and the upper computer is internally provided with a virtual ultrasonic image generation system, and the virtual ultrasonic image generation system comprises medical image analysis software and a three-dimensional digital model of a human organ and is used for displaying a corresponding organ ultrasonic section image according to the real-time pose of the simulation ultrasonic probe. According to the invention, a single electromagnet magnetic source and a single magnetic sensor are combined ...

Multi-empty-hole corner column combined cylindrical straight hole slotting structure and method

The invention discloses a multi-empty-hole corner column combined cylindrical straight hole slotting structure which comprises a central empty hole, four charging holes uniformly surrounding the central empty hole and four side empty holes uniformly surrounding the periphery of the outer side of the charging holes, the central empty hole is located in the central position of a slotting area of a working face, and the side empty holes are located in the central position of the slotting area of the working face. The distances from the charging holes to the central empty hole and the two nearest side empty holes are the same; the invention further provides a multi-empty-hole corner column-shaped and barrel-shaped straight hole combined slotting method. The slotting structure is adopted, and detonation is conducted at the same time. The design is ingenious, three empty holes are formed in the periphery of each charging hole, so that an enough free surface is provided for blasting of the charging ...

Energy storage and release device with high-pressure water as heat storage medium and control method of energy storage and release device

The invention discloses an energy storage and release device with high-pressure water as a heat storage medium and a control method of the energy storage and release device. According to the energy storage and release device, a first outlet of a first storage tank communicates with a first inlet of a second storage tank through a first control valve, a first water pump and a first heat exchange channel of a first heat exchanger; a first outlet of the second storage tank is communicated with a first inlet of the first storage tank through a first heat exchange channel of the second heat exchanger; a second outlet of the first storage tank communicates with a second inlet of the second storage tank through a second heat exchange channel of the second heat exchanger, and a second outlet of the second storage tank communicates with a second inlet of the first storage tank through a third control valve, a second water pump and a first heat exchange channel of the third heat exchanger. High-pressure ...

Ground vertical rail gradient inversion method and equipment based on satellite-borne photon counting radar

The invention provides a ground vertical rail gradient inversion method and equipment based on a satellite-borne photon counting radar. The method comprises the following steps: inputting system parameters, vertical rail gradient inversion control parameters and monorail point cloud data of the spaceborne photon counting radar; calculating the slope along the rail and the roughness of the ground; accumulating the point cloud data to generate a photon histogram; restoring the photon histogram into a ground reflection signal; extracting the root mean square pulse width of the ground reflection signal; and calculating the ground vertical rail gradient. According to the method, the ground vertical rail gradient can be inverted based on the satellite-borne photon counting radar monorail point cloud data, the method is suitable for single-beam and multi-beam satellite-borne photon counting radars, the ground vertical rail gradient inversion resolution is greatly improved, and the robustness of ...

METHOD AND DEVICE FOR AUTOMATICALLY CONNECTING WIRELESS LOCAL AREA NETWORK

The present disclosure relates to a method and device for automatically connecting a wireless local area network, which are used for reducing the probability of failure of automatic connection and reducing interference for users. The method comprises: when the connection state of a wireless local area network is in a non-connection state and a first wireless local area network is detected, according to the name of a peripheral wireless local area network currently found by searching, generating a first wireless local area network list; comparing the first wireless local area network list with a pre-stored second wireless local area network list to obtain a comparison result; and when the comparison result complies with a preset condition, according to pre-stored connection information about a second wireless local area network, initiating a connection request to the first wireless local area network. The technical solution of the present disclosure can increase the accuracy rate for judging ...

Broadcast program generation method and device, storage medium and computer equipment

The invention provides a broadcast program generation method and device, a storage medium and computer equipment, and the method comprises the steps: responding to a received broadcast program generation request, and determining the sound source type of an input sound source carried in the broadcast program generation request and the equipment attribute of target playing equipment; determining an analysis mode of the input sound source according to the sound source type, and obtaining initial audio data corresponding to the input sound source according to the analysis mode; determining a target audio coding format according to the equipment attribute, and coding the initial audio data based on the target audio coding format to obtain target audio data; and based on the target audio data, constructing a target TS stream to obtain a target broadcast program corresponding to the broadcast program generation request. By applying the method provided by the invention, the user can obtain the ...

TIMING RESPONSE-BASED CLOCK FREQUENCY OFFSET ESTIMATION METHOD FOR INDUSTRIAL WIRELESS SENSOR NETWORK

The present invention relates to the technical field of wireless sensor networks, and in particular, to a timing response-based clock frequency offset estimation method for an industrial wireless sensor network. In the method, a node to be synchronized sends a data packet to a reference node; after receiving the data packet, the reference node maps corresponding timing response time according to the sequence number of the data packet, and returns an acknowledgement message after the time interval, wherein the node to be synchronized and the reference node do not need to exchange timestamp information therebetween, and after multiple communication interactions, the node to be synchronized can estimate a relative frequency offset and a fixed time delay between node clocks. The present invention is easy to be integrated into an industrial wireless sensor network having a time slot mechanism, and can achieve long-term tracking of clock frequency offsets at a relatively low cost because there ...

EXPRESSION RECOGNITION METHOD AND APPARATUS AND RECOMMENDATION METHOD AND APPARATUS

An expression recognition method and apparatus and a recommendation method and apparatus, the method comprising: in a preset time period, acquiring a plurality of face images of the same subject (101); on the basis of a preset expression recognition model, performing expression recognition on the plurality of face images of the same subject acquired in the preset time period, and acquiring a recognition result (102); and, on the basis of the recognition result, determining the expression of the subject in the preset time period (103). The expression of a subject in a preset time period is determined by identifying the expression corresponding to a plurality of face images of the same subject in the given preset time period by means of a specified expression recognition model, thereby increasing the accuracy of expression recognition.

Device and method for launching seaplane model in towing tank

A device applied to a towing tank for launching a seaplane model comprises a frame, the bottom of the frame is connected with a launching rack through a sliding module, the launching rack comprises a mounting plate, the mounting plate is fixedly connected to the lower portion of the sliding module, the lower portion of the mounting plate is connected with a supporting frame through a lifting mechanism, and a lifting frame is hinged to the bottom of the supporting frame; an angle adjusting mechanism is arranged between the lifting frame and the supporting frame, a model airplane fixing mechanism used for fixing a model airplane is arranged at the bottom of the lifting frame, the model airplane fixing mechanism comprises a tail bracket and an adjusting mechanism used for adjusting the angle between the tail bracket and the lifting frame, and a tail bracket base is arranged in the middle of the tail bracket. The angle adjusting mechanism comprises an angle adjusting ejector rod, the angle ...

Low-power-consumption Bluetooth equipment communication method and device and storage medium

The invention discloses a low-power-consumption Bluetooth equipment communication method and device and a storage medium. According to the method, distance information between devices is obtained, the relation between the transmission rate and the transmitting power is determined, the required transmitting power is calculated according to the distance, and the transmitting power of the devices is adjusted to maintain the communication quality. In addition, according to the method, the RSSI values of the Bluetooth signals received by the devices are used for estimating the distance between the devices, and the measurement accuracy is improved through the calibration step. The acceleration of the device and the change of the RSSI value are also considered to determine whether the device is moving and adjust the calibration frequency. In addition, the real distance between the devices is estimated through a Kalman filter, and the estimation precision is improved by combining prediction and ...

ROUTING METHOD, DEVICE AND EQUIPMENT FOR ON-LINE ANALYTICAL PROCESSING ENGINE

Disclosed by the present invention are a routing method, device and equipment for an OLAP engine, the routing method comprising: acquiring a sample, the sample comprising a plurality of query language and a plurality of execution engines corresponding to the plurality of query language; characterizing the plurality of query language according to the grammatical structure of structured query language (SQL); storing the plurality of characterized query language and the plurality of execution engines into a storage medium as a training set; and training the training set using a machine learning algorithm so as to obtain a selection model. In the present invention, an execution engine for SQL language is trained in an incremental manner by means of a machine learning method, and the method may thus achieve accurate, effective and dynamic adjustment and selection of an OLAP engine.

MULTICAST IMPLEMENTATION METHOD AND DEVICE SUPPORTING NON-SINGLE VLAN

Disclosed is a multicast implementation method supporting a non-single VLAN, comprising: running a multicast protocol at a network layer, and running multicast snooping at a link layer; creating a three-layer interface encapsulated or aggregated by more than two VLANs; delivering multicast data traffic to a two-layer VLAN corresponding to a multicast data receiver through the three-layer interface, and then delivering the multicast data traffic to a physical port corresponding to the multicast data receiver through the two-layer VLAN. Also disclosed is a multicast implementation device supporting a non-single VLAN. The multicast solution provided by the present invention solves the multicast implementation problem for a non-single VLAN environment, and has advantages that the bandwidth utilization ratio is high and the communication data is secure.

DETERMINISTIC SCHEDULING METHOD FOR WIA-PA NETWORK

The present invention belongs to the technical field of industrial wireless network communications, and relates to a deterministic scheduling method for a Wireless Networks for Industrial Automation-Process Automation (WIA-PA) network. According to the method, in a middle/small-scale WIA-PA network, by using a backtracking-based optimal deterministic scheduling method, a solution space tree for a scheduled data flow is established, and a scheduling solution can be obtained after all or part of the solution space tree is searched, so that an optimal success rate of scheduling can be obtained; and in a large-scale WIA-PA network, by using a sub-optimal deterministic scheduling method based on prioritizing a minimum time margin, a time margin of each timeslot is calculated for each data flow, and a scheduling priority is arranged according to a time margin, so that a scheduling solution can be obtained within a short time with a high success rate. The deterministic scheduling method provided ...

Car camera erection support

... 本实用新型涉及汽车零部件领域，尤其是种汽车摄像头安装支座，其不同之处在于：其包括支座本体，所述支座本体包括基座和用于套装摄像头的筒状结构，所述基座上开设有与摄像头镜头配合的第通孔，所述基座具有相对设置的第面和第二面，所述基座的第面被构造为仿形面，所述仿形面贴合于汽车后门槛里侧；所述筒状结构的端固定在所述基座上、另端均匀分布有若干个卡接件；设于所述筒状结构内的密封件；及与所述支座本体配合的支座盖体，所述支座盖体上开设有与摄像头线束配合的第二通孔、及与所述卡接件配合的卡槽结构。本实用新型装配牢靠稳固，易于拆卸，且具有防水的功能，提高了摄像头的使用寿命。 ...

Automobile exhaust treatment device

The invention discloses an automobile tail gas treatment device and device, and relates to the technical field of tail gas treatment.The automobile tail gas treatment device comprises a mounting unit and a tail gas treatment unit, the mounting unit comprises a shell, a tail gas treatment cavity is formed in the shell, the two ends of the shell are provided with a through gas inlet and a through gas outlet respectively, and the gas inlet is connected with a tail gas exhaust pipe of an automobile; the tail gas circulating unit comprises an air exhaust assembly and a circulating pipeline communicated with the tail gas treatment cavity; the cooling unit comprises two sets of cooling boxes symmetrically distributed on the two sides of the shell, and the two sets of cooling boxes are communicated through an arc-shaped bent pipe; by arranging the mounting unit, the tail gas circulating unit and the cooling unit, the air inlet of the shell is connected with the tail gas exhaust pipe of the automobile ...

Active fault sampling device

The invention relates to the field of geological exploration sampling, in particular to an active fault sampling device. The technical implementation problem of the invention is as follows: in the process of opening a semi-closed pipe, samples are artificially damaged, and the samples and residual muddy water are directly poured on a collecting box manually, so that the samples of each geological layer are mixed with the muddy water, and the phenomenon of mutual mixing and pollution of various geological samples is caused. According to the technical scheme, the active fault sampling device comprises a shell, an unfolding system and the like; the shell is connected with an unfolding system. By means of the device, the semi-closed pipe can be stably opened, samples are prevented from being attached to the pipe wall, meanwhile, when the samples are taken out, the samples can be compacted, the phenomenon that the samples are broken after being taken out is prevented, and the problem that the ...

OMNIBEARING MOVING TRACK

An omnibearing moving track is mainly composed of a driving wheel (12), track plates (13), a roller (14), a loading wheel (15), a towing wheel (16), and an induction wheel (17). The roller (14) is fixed on a roller bracket (23) of each track plate, and the rotation axis thereof forms a certain angle with the axis of the driving wheel (12) of the omnibearing moving track so as to form an offset angle of the roller (14). The offset angle of the roller (14) ranges from 0° to 90° or -90° to 0°, and preferably is ±45°.

Rectangular adapter, plug matched with adapter and connector

A rectangular adapter comprises a rectangular outer shell, the outer shell is provided with a rectangular inner hole, an insertion core module, a terminal and a shielding sheet are installed in the rectangular inner hole, the shielding sheet is installed between the insertion core module and the inner wall of the outer shell, and the outer shell is further provided with a locking component matched with an adaptive plug. And the locking part and the shielding sheet are arranged on different side walls of the outer shell. Through the above optimization, the internal structure of the adapter is simplified, and other materials except the terminals and the shielding member are non-metallic materials, thereby simplifying the technology and reducing the processing time. The rectangular adapter further comprises a plug matched with the rectangular adapter, by optimizing the structure and the shape of the adapter, the structure of a matching section on the plug is indirectly simplified, meanwhile ...

Preparation method of cobalt nickel/graphite phase carbon nitride/reduced graphene oxide composite aerogel wave-absorbing material

The invention discloses a preparation method of a cobalt-nickel/graphite-phase carbon nitride/reduced graphene oxide composite aerogel wave-absorbing material, which comprises the following steps: firstly, respectively obtaining cobalt-nickel magnetic nano metal particles and graphite-phase carbon nitride through solvothermal and thermal polymerization methods; then, cobalt-nickel magnetic metal nanoparticles, graphite-phase carbon nitride and graphene oxide are mixed and react through a one-pot hydrothermal method, hydrogel of the composite material is obtained, finally, freeze drying and thermal annealing treatment are conducted, and cobalt-nickel/graphite-phase carbon nitride/reduced graphene oxide composite aerogel is obtained. According to the composite aerogel, the impedance matching performance of graphene is further improved by introducing graphite phase carbon nitride, multiple reflection and scattering are enhanced by utilizing a porous network structure in the aerogel, and the ...

Bottled water conveying and lifting device and control method

The invention discloses a bottled water conveying and lifting device which comprises a horizontal conveying mechanism and a lifting mechanism, and the horizontal conveying mechanism and the lifting mechanism are connected through a movable screw. Wherein the horizontal conveying mechanism comprises a first box body, a first motor and a horizontal conveying belt, and a first position sensor, a second position sensor and a controller are further installed on the inner wall of the first box body; the lifting mechanism comprises a second box body, a water inlet and outlet panel is arranged at the top of the second box body, a second motor is arranged at the bottom of the second box body, the second motor is connected with one end of a lifting transmission belt, the other end of the lifting transmission belt is connected with the water inlet and outlet panel, a linear guide rail is further installed on the lifting transmission belt, and a water cup base is arranged on the linear guide rail; ...

Environmental noise detection system and prevention and treatment method

The invention discloses an environmental noise detection system and prevention method, the system comprises a display screen, a vertical guide rail plate, a noise detection panel and a noise detection head, the noise detection head is arranged on one side of the front surface of the noise detection panel, the noise detection panel is arranged on a fixing frame, one side of the fixing frame is arranged on the vertical guide rail plate through a guide clamping plate, and the other side of the fixing frame is arranged on the vertical guide rail plate through a guide clamping plate. A display screen is arranged on the top of the fixing frame through a hoop frame. A detachable noise detection head is arranged on the front face of the noise detection panel in an embedded mode, the noise detection head is used for noise detection and is convenient to disassemble, overhaul and replace, a fixing frame is arranged on the outer side of the noise detection panel, a guide clamping plate is arranged ...

Precise reverse design method for plane measuring tool

A method for precisely and reversely designing a plane measuring tool comprises the steps that firstly, the plane measuring tool with a structural hole is leveled and polished, then a lining is customized according to the hole diameter of the structural hole of the plane measuring tool, and after the outline of the plane measuring tool and the outline of an inner hole of the lining are measured through a visual detector, preliminary proofing design is conducted; data points which do not meet requirements are deleted from the measurement data after proofing design, the remaining data points which meet the requirements are processed and then fitted into a smooth spline curve, and the spline curve and the contour of the plane measuring tool object are detected with the plane measuring tool object as a reference object; and finally, combining a plane measuring tool object and an original two-dimensional design drawing, redesigning the characteristics of the plane measuring tool by adopting ...

Adjusting method, device and system for multi-channel gain

The invention discloses an adjusting method, device and system for multi-channel gain, which are applied to a gain adjusting device, gain adjusting information is obtained by receiving and analyzing a gain adjusting trigger signal, corresponding gain control information is generated according to the gain adjusting information, and the gain control information is sent to a gain control device. And enabling the gain control device to determine a channel needing to be adjusted according to the channel information, and adjusting gain values corresponding to a plurality of channels according to the adjustment gain value. According to the invention, the channels needing gain adjustment and the corresponding adjustment gain values are determined through the gain control information, the plurality of channels needing gain adjustment are clustered through the channel information in the gain control information, and the clustered channel gain values are adjusted through the adjustment gain values ...

Display screen assembly, electronic equipment, testing device and system

The embodiment of the invention provides a display screen assembly, electronic equipment, a testing device and a system, the display screen assembly comprises a display screen, the display screen is provided with a first flexible circuit board and a second flexible circuit board, a first connecting end of the first flexible circuit board is connected with the display screen, and a second connecting end of the first flexible circuit board is connected with a main circuit board in the electronic equipment. And the second flexible circuit board is connected with a part of pins of the first flexible circuit board and is used for being connected with an auxiliary circuit board in the electronic equipment. The display assembly further comprises an adapter, an input pin and an output pin connected with a backlight input interface of the display screen are further arranged at the end of the second flexible circuit board, the adapter is detachably connected between the input pin and the output pin ...

CLOCK SYNCHRONIZATION FREQUENCY DEVIATION ESTIMATION METHOD APPLICABLE TO MULTI-HOP WIRELESS SENSOR NETWORK

The present invention relates to a clock synchronization frequency deviation estimation method applicable to a multi-hop wireless sensor network, and belongs to the technical field of wireless sensor networks. In the method, two methods comprising a forwarding method and a transparent transmission method, are provided based on demands of a node for synchronization precision: A, in the forwarding method, a node in an intermediate layer initiates synchronous interaction with a node in the next layer at the same time interval after every correction time; and B, in the transparent transmission method, the processing time of the node in the intermediate layer is regarded as an additionally introduced fixed time delay and random time delay, and the node directly establishes a synchronization relationship with a root node. According to the estimation method provided in the present invention, the node can correct the local clock in each synchronous information interaction process, the synchronization ...

SECURE PRINTING METHOD AND SYSTEM

The present invention provides a secure printing method and a system. The method comprises: acquiring a file to be printed corresponding to a printing request; determining a file security level of the file to be printed; determining, from a plurality of pre-configured image forming devices, an image forming device corresponding to the file security level; and printing the file to be printed using the determined image forming device. The secure printing method and system provided in the present invention determines a file security level of a file to be printed, and later determines an image forming device corresponding to the file security level, and then prints the file to be printed by means of the determined image forming device, thereby satisfying printing requirements of different users, while also ensuring the security of file information, and improving efficiency when printing various files. The invention further provides a practical secure printing method that does not require manual ...

16+8 gear gearbox

... 本实用新型公开了一种16+8档位的变速箱，安装于箱体内的副变速机构包括固定安装于副变速主动轴上的低档主动齿轮和固定安装于输出轴上的副变速从动齿轮座。副变速从动齿轮座上滑键连接有倒档被动齿轮，输出轴上转动安装有低档从动齿轮，低档从动齿轮与低档主动齿轮啮合。倒档被动齿轮位于中间轴的输出端与低档从动齿轮的连接端之间，倒档被动齿轮滑动与中间轴的输出端或低档从动齿轮的连接端连接。第一惰轮和第二惰轮两者的连接端上滑动安装有啮合套，低档主动齿轮与第一惰轮啮合，倒档被动齿轮与第二惰轮啮合。本实用新型能降低故障率，使得变速箱箱体内的结构分散，便于换挡零部件的安装。 ...

Glazed travertine brick with metallic luster and strong stereoscopic impression and preparation method of glazed travertine brick

The invention relates to the technical field of travertine bricks, in particular to a glazed travertine brick with metallic luster and strong stereoscopic impression and a preparation method of the glazed travertine brick. A preparation method of a glazed travertine brick with metallic luster and strong stereoscopic impression comprises the following steps: step A, distributing powder in a mold, performing compression molding, and dispersing a plurality of convex blocks in the mold to prepare a green brick with a plurality of concave holes distributed in the surface; step B, applying cover glaze on the surface of the green brick to form a cover glaze layer; and step C, carrying out first firing on the green brick coated with the cover glaze to obtain the travertine brick. According to the preparation method of the glazed travertine brick with the metallic luster and the strong stereoscopic impression, the glazed travertine brick with the decorative effect of a natural travertine structure ...

Engine cover opening angle measuring device and measuring method thereof

The invention provides an engine cover opening angle measuring device and method, and the device comprises a first supporting part, a second supporting part, a first connecting plate, a second connecting plate, a first angle scale, a second angle scale, a rotating shaft, a connecting part, and a heavy hammer. The first supporting piece and the second supporting piece are oppositely arranged on the outer surface of the engine cover in the front-back direction, the two connecting plates are parallel, and the two ends of the two connecting plates are connected with the two supporting pieces respectively. The first angle scale is arranged on the first connecting plate, the second angle scale is arranged on the second connecting plate, and the two angle scales are arranged perpendicular to the ground; a gap is formed between the two angle scales, the circle center lines of the two angle scales coincide, through holes are formed in the circle centers of the two angle scales, and the two ends ...

Air conditioner and water heater main machine fusion body with complementary outer heat exchanger structure and combined air path

The invention discloses an air conditioner and water heater main machine fusion body with complementary structure and combined air path of an external heat exchanger, which combines an air conditioner main machine heat exchanger and a water heater main machine heat exchanger, and at least two refrigerating medium pipelines are arranged in a flat plate type finned tube external heat exchanger of the air conditioner and air energy water heater main machine fusion body. The refrigerating medium pipeline is respectively communicated with the air conditioner compressor and the air energy water heater compressor to form an air conditioner refrigerating medium circulation loop and an air energy water heater refrigerating medium circulation loop; the air conditioner refrigerating medium circulation loop and the air energy water heater refrigerating medium circulation loop jointly occupy fins of the air conditioner and air energy water heater host fusion body flat plate type finned tube outer heat ...

Wind speed testing arrangement based on automobile roads coasting test under big wind speed

... 本实用新型公开了一种基于大风速下汽车道路滑行试验的风速风向测试装置，包括风速风向传感器、水平仪、牵引杆、固定支架、连接器、双GPS移动天线；固定支架预紧固定在试验车拖车孔中，铝型材连接器套装在固定支架上，其一侧焊接有牵引杆，牵引杆上设有风速风向传感器，双GPS移动天线获取风速风向传感器在牵引杆上的测量位置，从而获取大风速下汽车道路滑行的风速。本实用新型采用的风速风向测试装置，安全稳固，方便实用，具有较高的测试精度，适用于多种汽车进行不同的大风速下的道路滑行试验。 ...

Open tank hoisting tool and method

The invention relates to an open tank hoisting tool and method, and belongs to the technical field of welding. According to the technical scheme, a first clamp assembly (3) and a second clamp assembly (4) which are of the same structure are hung below the two ends of a longitudinal beam assembly (2) respectively; the first clamp assembly (3) and the second clamp assembly (2) slide on longitudinal linear guide rails (23) at the two ends of the longitudinal beam (20). A first opening expanding assembly and a second opening expanding assembly of a first clamp assembly are symmetrically arranged on the lower portion of a first longitudinal sliding plate assembly (5), a tank pressing device (10) is matched with a tank supporting assembly (11) and located between the first opening expanding assembly and the second opening expanding assembly, and the first longitudinal sliding plate assembly (5) is arranged on the upper portion of the middle of a first cross beam assembly (7). And the tank body ...

Supramolecular compound, two-dimensional rare earth oxysalt material and preparation method of two-dimensional rare earth oxysalt material

The invention relates to the field of metal oxysalt materials, and particularly discloses a supramolecular compound, a two-dimensional rare earth oxysalt material and a preparation method of the supramolecular compound and the two-dimensional rare earth oxysalt material. A series of pi-conjugated planar supramolecular compounds are synthesized and are used as synthesis templates to prepare a series of novel two-dimensional rare earth oxysalt materials. The two-dimensional rare earth oxysalt materials with different structures can be effectively and controllably synthesized by regulating and controlling the type of the supramolecular compound template, the oxyacid radical and the type of the organic amine. The template synthesis strategy based on the supramolecular compound has very high universality, can be suitable for all rare earth elements, can be used for preparing a two-dimensional rare earth oxysalt material which has a single structure and contains one or more rare earth elements ...

Superconducting and quenching monitoring system and quenching monitoring method

The invention provides a superconducting quenching monitoring system and a quenching monitoring method. The superconducting and quenching monitoring system comprises an optical time domain reflectometer module and a Mach-Zehnder interferometer module, the Mach-Zehnder interferometer module and the optical time domain reflectometer module share a component; the common assembly comprises a laser, an electro-optical modulator, a circulator, a sensing optical fiber, a reference optical fiber and the like; the optical time domain reflectometer module further comprises a first polarization beam splitter, a second polarization beam splitter, a first data acquisition and processing system and the like; the Mach-Zehnder interferometer module comprises a second polarization controller, a second data acquisition system and the like; the two modules both utilize the polarization beam splitting technology, so that the influence caused by polarization scattering of a long-distance monitoring system can ...

Communication method, core network element, user equipment and communication system

Provided are a communication method, a core network element, user equipment and a communication system, the communication method comprising: a core network element sending an SATP to a UE through an on-satellite base station to instruct the UE to stop sending signaling data to a core network through the on-satellite base station or another on-satellite base station within a period of time. Therefore, the reliability of the on-satellite base station can be improved.

Kidney injury diagnostic marker, detection kit and application thereof

The invention discloses a renal injury diagnosis marker, a detection kit and application of the renal injury diagnosis marker and the detection kit. The renal injury diagnosis marker is OCT2, SLC3A1 and HNF1B. According to the invention, OCT2, SLC3A1 and HNF1B are provided as diagnostic markers for renal injury, a PCR amplification detection system with high detection accuracy is constructed, detection can be completed only based on a urine sample, sampling is convenient and easy to obtain, patient compliance is high, detection time is short, objectivity is strong, technical requirements for detection personnel are low, and the kit has extremely high practical value.

CT-guided pulmonary nodule puncture angle instrument and debugging method thereof

The invention discloses a CT-guided pulmonary nodule puncture angle instrument and a debugging method thereof, and aims to solve the problem that the success rate is reduced due to angle deviation during puncture operation. The device comprises a first connecting plate, a second connecting plate and an arc-shaped plate, the first connecting plate and the second connecting plate are rotationally connected, and an arc-shaped through hole is formed in the arc-shaped plate; the outer side of the second connecting plate is connected with an adjusting bolt; a needle rail is arranged on the upper surface of the second connecting plate in the length direction and serves as a needle inserting rail of a puncture needle. The puncture needle is simple in structure, convenient to use, high in puncture precision, consistent with a preoperative design angle, and capable of reducing the puncture frequency, improving the puncture success rate, reducing operative complications and relieving pain of a patient ...

Device and method for quickly deploying audio signal channel

The invention provides a device and a method for quickly deploying an audio signal channel. The device comprises a first MCU (Microprogrammed Control Unit), a second MCU and a DSP (Digital Signal Processor) control unit, the first MCU control unit is used for obtaining a first channel identifier, an audio control function identifier and a second channel identifier after responding to channel copying and pasting operations of a user; the second MCU control unit obtains first control data corresponding to the audio signal channel to be copied from a preset database according to the first channel identifier and the audio control function identifier; and finally, the DSP control unit replaces the second control data of the audio signal channel to be pasted with the first control data. According to the audio signal channel deployment method and device, after the channel copying operation and the channel pasting operation of the user are responded, various types of audio control modules in the ...

POE power supply audio power amplification method, device and equipment

The invention discloses a POE power supply audio power amplification method, device and equipment, and the method comprises the steps: obtaining a first audio signal, and carrying out the power amplification of the first audio signal; wherein in the power amplification process, the input voltage of a circuit for audio power amplification is controlled, so that the consumed power of the circuit does not exceed a first set threshold value; the SPWM duty ratio of the audio signal after power amplification is detected in real time; when it is detected that the SPWM duty ratio exceeds a second set threshold value, the power amplifier gain in the audio power amplification process is reduced so as to reduce the audio amplitude; and when the power amplification of the first audio signals is completed, outputting second audio signals. By forming a closed-loop automatic gain control formed by the power supply and the power amplifier, clipping distortion of power amplifier output is avoided, and meanwhile ...

Fabricated beam and slab connecting structure, construction equipment and construction method

The invention relates to the technical field of beam-slab connection, in particular to a fabricated beam-slab connection structure and a construction method thereof.According to the technical scheme, the fabricated beam-slab connection structure comprises a precast beam, and lap joint grooves are formed in the two sides of the upper end in the width direction; the precast slabs are arranged on the two sides of the precast beam in the width direction, and the ends of the precast slabs are in lap joint in the lap joint grooves; and the multiple tie pieces are distributed in the length direction of the precast beam and used for connecting the precast slabs on the two sides of the precast beam. Compared with a laminated beam and laminated slab connecting scheme in the background technology, the dry-type connection is adopted, and the concrete does not need to be solidified, so that the effects of saving the construction time and accelerating the construction efficiency are achieved.

DRIVING BEHAVIOR SCORING METHOD AND DEVICE AND COMPUTER-READABLE STORAGE MEDIUM

A driving behavior scoring method and device and a computer-readable storage medium. The driving behavior scoring method comprises: accumulating sample data, the sample data comprising sample driving data and sample insurance policy data of sample drivers (S1); determining, according to an accumulation amount of the sample driving data and the sample insurance policy data, a current accumulation stage of the sample data (S2); and employing a driving scoring method corresponding to the current accumulation stage, and using the accumulated sample data to score driving behaviors of a current driver (S3).

Stream pushing parameter control method for audio and video pushing of streaming media and related device

The invention discloses a stream pushing parameter control method for stream media audio and video pushing and a related device, and the method comprises the steps: obtaining the first signal strength and the first channel bandwidth of the wireless connection of a stream pushing terminal, the transmission frame rate of audio and video data, and the second signal strength and the second channel bandwidth of the wireless connection of a stream pulling terminal, and determining the state of the current network according to the stream pushing terminal parameters and the stream pulling terminal parameters, determining the collection coding resolution and the coding rate based on the state corresponding to the current network, and sending the collection coding resolution and the coding rate to the stream pushing terminal. Therefore, the network parameters of the flow pushing terminal and the flow pulling terminal are acquired, so that the state of the current network is evaluated, the acquisition ...

Photoetching method and system

The invention discloses a photoetching method and system, and belongs to the field of integrated circuit manufacturing. The photoetching method comprises the following steps that a mask plate is divided into a plurality of exposure areas according to the density of mask patterns on the mask plate, and the density of the mask patterns in each exposure area is within a preset range; acquiring a focus point range of a mask pattern on the mask plate; acquiring an optimal focusing range according to the focusing point range; each exposure area is exposed, and during exposure, the position from the mask plate to a lens is adjusted according to the density of the mask pattern in each exposure area, so that the focus point of the mask pattern is located in the optimal focusing range. According to the photoetching method and system provided by the invention, the size of a common process window of mask patterns with different densities can be increased.

Fire prevention method and device for coal mine and fire prevention system for coal mine

The invention provides a fire prevention method and device for a coal mine and a fire prevention system for the coal mine. The method comprises the steps of determining whether a fire occurs in a target area according to environment data and/or line data, and generating prompt information and sending the prompt information to a mobile terminal when determining that the fire occurs in the target area. According to the scheme, the environmental data of the target area of the coal mine can be collected and analyzed to determine whether the fire occurs in the target area, and the line data of the target line of the target area of the coal mine can be collected and analyzed to determine whether the fire occurs in the target area. According to the scheme, whether the fire occurs in the target area or not can be accurately determined through the environment data and/or the line data, and the prompt information can be sent in time to prompt workers in time when it is determined that the fire occurs ...

METHOD AND DEVICE SUITABLE FOR CONTROLLING PICTURE ADJUSTMENT FOR PREPRINTED PAPER

A method suitable for controlling the picture adjustment for a preprinted paper and a corresponding device for controlling the picture adjustment. The method comprises the following steps: a. acquiring preprinted paper data (S101); b. acquiring to-be-printed document data (S102); c. determining, on the basis of the preprinted paper data and the to-be-printed document data, whether the to-be-printed document data need to be adjusted (S103); d. if the to-be-printed document data need to be adjusted, generating, on the basis of the preprinted paper data and the to-be-printed document data, an adjustment parameter (S104); and e. performing printing on the basis of the to-be-printed document data and the adjustment parameter (S105). According to said method, it is observed or identified, by means of the preview interface or the computer identification function, whether the to-be-printed document data can be printed in a proper position on the preprinted paper before the actual printing, and ...

Degerming mop

... 本实用新型公开了一种除菌拖把，包括拖把杆，拖把杆上设有烘干装置和储水箱，拖把杆的下端设有内空型拖把盘体，拖把盘体的底板上设有出水孔。本实用新型对现有拖把进行了改进，在其基础上加装了烘干装置，能保证地面迅速干燥，储水箱及其内部加热管的设置，能保证在地面干燥的同时达到了消毒灭菌的目的，底层的清洁装置能保证洁净地面，拖把杆上的水箱也能冲洗拖把，这就解决了传统拖把洁净地面时不能及时干燥、无法除菌消毒、需多次涮洗的问题。 ...

Automatic auxiliary diagnosis method for pancreatic cancer and autoimmune pancreatitis based on PET-CT (positron emission tomography-computed tomography)

The invention discloses an automatic auxiliary diagnosis method for pancreatic cancer and autoimmune pancreatitis based on PET-CT (positron emission tomography-computed tomography). The method comprises the following steps: respectively carrying out image preprocessing on a PET image and a CT image; on the basis of a Faster-Rcnn algorithm, an attention mechanism module is introduced into a Resnet50 residual network, an FPN network is added to form a feature pyramid network, ROILight is used for replacing a ROIPooling layer, an improved detection network is constructed, target detection is carried out on a PET image and a CT image which are subjected to image preprocessing, and an 18F-FDGPET/CT image of a focus detection result is output; and constructing a hybrid classification model, carrying out radiomics feature extraction, deep learning feature extraction, multi-modal feature fusion, multi-domain feature fusion and feature correlation analysis on the 18F-FDG PET/CT image, and outputting ...

Polishing device for wafer processing

The invention discloses a polishing device for wafer processing, and relates to the field of polishing, the polishing device comprises a bottom plate, a frame body is fixedly arranged at the upper end of the bottom plate, two sliding plates are symmetrically arranged on the frame body in a sliding mode, and a sliding assembly used for the two sliding plates to slide in the opposite direction or away from each other is arranged on the frame body; and first rotating pipes are arranged on the two sliding plates in a penetrating mode through bearings correspondingly, and rotating center rotating discs are arranged at the opposite ends of the two first rotating pipes correspondingly. Compared with the prior art, the wafer clamping device has the advantages that when a wafer is clamped, even if granular protrusions appear on the surface of the wafer, the surface of the wafer can be attached in a self-adaptive mode through the extrusion fixing assembly on the center rotating disc or the edge rotating ...

Steel-concrete connection grouting material movable stirrer

The invention discloses a movable stirrer for reinforced concrete connection grouting materials, and belongs to the technical field of stirring, the movable stirrer comprises a stirring barrel for stirring the reinforced concrete connection grouting materials, the top end of the stirring barrel is connected with a barrel cover, the top end of the barrel cover is provided with a feeding channel, and the inner wall of the feeding channel is connected with a connecting frame through screws; a supporting rod used for supporting a steel-concrete connection grouting material bag is welded to the top end of the connecting frame, two lower linear motors are connected to the bottom end of the barrel cover, an assembly plate is welded to the bottom ends of moving parts of the two lower linear motors, and a plurality of lower electric push rods are connected to the side face of the assembly plate. The top end of the moving part of the lower electric push rod is connected with a bag cutter arranged ...

Compressed audio silence detection method and device based on artificial intelligence

The invention discloses a compressed audio silence detection method and device based on artificial intelligence. The method comprises the following steps: determining a coding algorithm and a data frame length adopted by a compressed audio sequence; selecting a corresponding convolutional neural network according to the coding algorithm; setting the number of input features of the convolutional neural network according to the data frame length; adjusting the length of a data frame according to the number of the input features, and recognizing the adjusted compressed audio sequence through the convolutional neural network to obtain a feature value of the compressed audio sequence; and if the characteristic value is lower than a preset silence threshold value, judging that the compressed audio sequence is silent audio. By adopting the method and the device, baseband audio data does not need to be decoded when the silent state is detected, so that the operand is greatly reduced, and the memory ...

PLATINUM-BASED ALLOY CATALYST AND PREPARATION METHOD THEREFOR, MEMBRANE ELECTRODE, AND FUEL CELL

The present invention relates to a platinum-based alloy catalyst, a preparation method therefor, a membrane electrode, and a fuel cell. The method for preparing a platinum-based alloy catalyst comprises the following steps: (1) preparing or providing nano-sized alloy particles of platinum and 3d transition metal; (2) subjecting the alloy particles prepared in step (1) to acid treatment; and (3) annealing the alloy particles treated in step (2). In the present invention, the size of the platinum-based alloy particles and the atomic ratio of the platinum to the transition metal in the platinum-based alloy are controlled, then the atomic ratio of the platinum to the transition metal is further controlled by combining the etching of the acid, and annealing is performed at a high temperature; according to the platinum-based alloy catalyst prepared thereby, the surface structure of the particles is improved, the loss of the transition metal in the working environment can be greatly prevented ...

Antibacterial protein for specifically killing vibrio, nucleic acid molecule, expression vector, host cell, anti-vibrio drug and application

The invention provides an antibacterial protein for specifically killing vibrio, a nucleic acid molecule, an expression vector, a host cell, an anti-vibrio drug and application, and relates to the technical field of drug protein screening and identification. The amino acid sequence of the antibacterial protein TseV for specifically killing the vibrio is shown as SEQ ID NO.1. Experiments prove that the TseV has the characteristic of efficiently and specifically killing vibrio microorganisms, can be applied to clinical treatment of vibrio infection or treatment of vibrio infection in the aquaculture industry, can avoid negative effects on hosts and host flora, and can be used for preparing the antibacterial protein TseV for specifically killing the vibrio. The method has important social value and economic value.

Chicken embryo fibroblast in-vitro three-dimensional culture and separation method

The invention discloses a method for in-vitro three-dimensional culture and separation of chicken embryo fibroblasts, and belongs to the technical field of cell culture. The culture method comprises the following steps: (1) after resuscitating chicken embryo fibroblasts, subculturing at least one generation to obtain a cell suspension, centrifuging, discarding a supernatant, adding a GelMA hydrogel solution, and resuspending the cells to obtain a mixed solution; (2) irradiating the mixed solution with an ultraviolet light source to obtain a chicken embryo fibroblast-GelMA hydrogel compound; (3) transferring the chicken embryo fibroblast-GelMA hydrogel compound into a culture dish, adding a culture solution, and performing cell culture for 7-9 days; and (4) after the cell culture is finished, discarding the culture solution, adding collagen II enzyme for digestion treatment for 5-10 minutes, centrifuging, and collecting the cell precipitate. The chicken embryo fibroblast three-dimensional ...

Audio gain method and device based on application program

The invention discloses an audio gain method and device based on an application program, and the method comprises the steps: reading a gain threshold value and gain duration of a target audio file through a preset application program, and obtaining a gain period of the target audio file according to the gain threshold value and the gain duration, decoding the target audio file according to a preset audio decoding mode in the application program, continuously obtaining a first audio corresponding to the target audio file, and finally obtaining a second audio corresponding to the target audio file according to the gain period. And continuously gaining the continuously obtained first audio through an automatic gain scheme preset in the application program until the gain reaches the gain threshold, and obtaining a gained second audio, thereby improving the audio gain effect and the user hearing experience.

Process for secondary esterification of PTA and BDO esterification products and AA and BDO esterification products for PBAT production

The invention discloses a PTA and BDO esterification product and AA and BDO esterification product secondary esterification process for PBAT production, which comprises the following steps: adding the PTA and BDO esterification product, the AA and BDO esterification product and a composite catalyst into a reaction kettle, and reacting at 240-280 DEG C for 0.5-3 hours; the addition amount of the composite catalyst is 0.5-1wt% of the mass of the PTA and BDO esterification product; before reaction, nitrogen is introduced into the reaction kettle, and vacuumizing replacement is performed. According to the process disclosed by the invention, PTA and BDO esterification products and AA and BDO esterification products can be subjected to one-step polycondensation to generate PBAT molecules with good aromatic polyester and aliphatic polyester chain segment uniformity.

Optimal selection method of ground node subset in wireless power transmission of multiple unmanned aerial vehicles

The invention relates to a method for optimally selecting ground node subsets in wireless power transmission of multiple unmanned aerial vehicles, which belongs to the field of unmanned aerial vehicle assisted wireless communication and comprises the following steps of: S1, dividing ground nodes into a plurality of circular areas with the same radius according to the power transmission range of the unmanned aerial vehicles to serve as the ground node subsets; s2, constructing an optimal selection model of the ground node subset; and S3, optimizing the hovering point of the unmanned aerial vehicle in each ground node subset, so that the unmanned aerial vehicle can charge the ground nodes at the optimal hovering point. The method is suitable for a large-scale low-power-consumption ground node charging scene, and by optimizing selection of the ground node subsets, the hovering charging frequency of the unmanned aerial vehicle is reduced, and the flight energy consumption of the unmanned aerial ...

MEMRISTOR AND METHOD FOR MANUFACTURING SAME

A memristor and a method for manufacturing the same. The memristor comprises a substrate (1) and a first electrode functional layer (21) and a second electrode functional layer (22) disposed on the substrate and spaced apart from each other, wherein the first electrode functional layer and the second electrode functional layer are connected by means of a nanowire or nanoribbon so as to achieve electronic conduction. The present structure of the memristor is employed to change the conventional "sandwich structure" of memristors. In the present structure, two electrode functional layers spaced apart from each other are disposed on the same plane at a substrate, and achieve electronic conduction with each other by means of nanowires or nanoribbons, thereby ensuring that the memristor can be switched between high resistance and low resistance in positive and negative voltage cycles, and obtain a high resistance value (HRS) or a low resistance value (LRS). The method for manufacturing the memristor ...

INDUSTRIAL WIRELESS NETWORK DETERMINISTIC SCHEDULING METHODS WHICH TAKE LINK RETRANSMISSION INTO ACCOUNT

The present invention relates to industrial wireless network deterministic scheduling methods which take link retransmission into account, relating to the technical field of industrial networks. With respect to high reliability and high real-time requirements for industrial wireless network data transmission, and in relation to the problem of packet loss in industrial wireless networks, the present invention takes retransmission into account during a scheduling process, and respectively provides deterministic scheduling methods which support continuous retransmission and intra-window retransmission policies. The methods are based on link time slot margins and dynamic priorities, alleviate the effects of packet loss on data transmission by allocating communication resources for a retransmission link in each time slot according to scheduling rules, perform corresponding time slot and channel resource optimal allocation around the two retransmission policies, and guarantee the on-time arrival ...

Method for improving stability of soft soil slope through cooperation of electroosmosis, electrophoresis and grouting

The invention belongs to the technical field of soft soil side slope reinforcement, and provides a method for improving the stability of a soft soil side slope through electroosmosis-electrophoresis-grouting cooperation in order to solve the problems that an existing soft soil side slope stability method is poor in using effect, large in work amount, high in cost and the like. Drilling holes in the surface of the slope body to embed hollow anchor rods, sleeving anode rings on the anchor rods and connecting the anode rings with wires, placing the hollow anchor rods at the bottoms of the formed holes, and connecting the wires with the positive pole of a direct-current power supply outside the slope body; cathode rings are arranged at the base plate and the stop-grouting plug and connected with the negative electrode of a direct-current power source outside the slope, and electrolyte is injected into the hollow anchor rod. Switching on a direct-current power supply to form a current field, ...

Method for controlling solenoid valve coil energization strategy

The invention provides a method for controlling a power-on strategy of a solenoid valve coil, which belongs to the field of automobile active braking, and at least partially reduces the sound generated by the solenoid valve when the power-on state is changed by setting the target power-on current and duration of the coil, and ensures that the power-on state of the coil is changed at the same time. When the switch-on state of the electromagnetic valve begins to change, the magnitude of the energizing current of the coil is controlled and adjusted, so that the electromagnetic force generated by the coil is changed, the energy of the movable core impacting the static core is reduced as much as possible, the sound generated by impacting the movable core and the static core is fundamentally reduced, and the problem that the sound generated when the switch-on state of the electromagnetic valve is changed is solved.

Vehicle and parking air conditioner external unit thereof

The invention provides a parking air conditioner outdoor unit which can be arranged at a circular spare tire mounting position below a vehicle body chassis, the orthographic projection of the parking air conditioner outdoor unit on the vehicle body chassis is located in the circular spare tire mounting position, and the parking air conditioner outdoor unit further comprises a bottom wall and a peripheral wall with a first air inlet. The parking air conditioner outdoor unit comprises an electric control unit, a compressor, an evaporator and a fan which are installed on the bottom wall, and the first air inlet covers the at least 100-degree circumferential area of the circumferential wall. Through the design matched with the circular spare tire mounting position of the vehicle bottom, the outdoor unit is mounted at the spare tire position, so that the space is efficiently utilized, meanwhile, the first air inlet covers a certain circumferential area of the circumferential wall, the air inlet ...

Virtual resistor subsynchronous oscillation control method and system for variable-wind-speed working condition of doubly-fed fan

The invention discloses a double-fed fan variable wind speed working condition virtual resistor subsynchronous oscillation control method and system, and the method comprises the steps: inputting a difference value between a stator current complex vector reference value and a stator current complex vector measurement value into a stator current controller, and adding the output of the stator current controller and a decoupling item to obtain a rotor voltage modulation signal; calculating expected virtual resistance on the rotor side through frequency and winding conversion; calculating to obtain a rotor subsynchronous voltage modulation signal based on the rotor side expected virtual resistance; and taking the rotor subsynchronous voltage modulation signal as an adjustment amount, and adding the adjustment amount and the rotor voltage modulation signal to obtain an updated rotor voltage modulation signal. According to the invention, safe and stable operation of the doubly-fed fan in a full-wind-speed ...

Bus bar welding device, typesetting stitch welding equipment and stitch welding method

The invention provides a bus bar welding device, typesetting stitch welding equipment and stitch welding method.The bus bar welding device is used for welding bus bars to all assembly units in a battery string set, each assembly unit comprises two battery strings, and the battery string set is formed by a plurality of assembly units; the bus bar welding device comprises a first bus bar preparation mechanism, a second bus bar preparation mechanism, a bus bar transferring mechanism, a first bus bar bearing mechanism, a second bus bar bearing mechanism, a third bus bar bearing mechanism, stitch welding tongs and a welding mechanism. Automatic welding of the bus bars of the battery string set is achieved, the bus bar preparing mechanism and the bus bar bearing mechanisms are arranged, stitch welding tongs are controlled to convey the battery string set in a stepping mode, and only three bus bar bearing mechanisms need to be arranged to bear the bus bars to be welded, so that the welding efficiency ...

Horizontal warehouse double-layer roof lower-layer plate hanging formwork structure and construction method of horizontal warehouse double-layer roof lower-layer plate hanging formwork structure

The invention relates to the technical field of hanging formworks, in particular to a horizontal warehouse double-layer roof lower-layer plate hanging formwork structure and a construction method of the horizontal warehouse double-layer roof lower-layer plate hanging formwork structure. A hanging part is arranged at the upper end of the hanging rib and is used for being hung with a roof truss of the horizontal warehouse; a sheath and a supporting ring are arranged at the lower end of the hoisting rib, the hoisting rib is detachably sleeved with the sheath, and the lower end of the hoisting rib is detachably sleeved with the supporting ring; a stepped hole is formed in the upper end of the supporting ring, and the lower end of the sheath is detachably inserted into the large-diameter end of the stepped hole; a sealing ring is arranged at the large-diameter end of the stepped hole and can seal a gap between the side wall of the stepped hole and the outer wall of the sheath, and the upper ...

Electric locomotive anti-slip system for large-gradient comprehensive pipe gallery construction

The invention relates to the technical field of construction security and protection devices, in particular to an electric locomotive anti-slip system for large-gradient comprehensive pipe gallery construction, which comprises a sound-light alarm mechanism, an interception mechanism and an electric locomotive anti-slip full-automatic bumper mechanism which are arranged on a track, and a hook assembly arranged at the bottom of an electric locomotive. According to the electric locomotive anti-sliding system for large-gradient comprehensive pipe gallery construction, when the electric locomotive stops, the sound-light alarm mechanism can monitor the electric locomotive, and if the condition of sliding occurs, sound-light alarm can be given in time to remind related personnel to take corresponding measures; due to the fact that the intercepting mechanism and the hook assembly are arranged, when the locomotive slides, the push rod is controlled to stretch to push the guide column downwards, ...

Dynamic objective table and surface shape adjusting method

The invention provides a dynamic objective table and a surface shape adjusting method, and the dynamic objective table comprises a supporting plate which is provided with a wire channel and a vacuum channel; the surface shape control module is installed on the surface of the supporting plate and comprises a piezoelectric ceramic array and an airtight wall, and the airtight wall surrounds the piezoelectric ceramic array; wherein the piezoelectric ceramic array is composed of piezoelectric ceramic units arranged in an array mode, each piezoelectric ceramic unit is independently connected with an external circuit through an electrode wire penetrating through a wire channel, and the external circuit independently applies potential difference to the two ends of each piezoelectric ceramic unit so that the piezoelectric ceramic units can independently generate longitudinal deformation; the piezoelectric ceramic array is used for supporting a to-be-adjusted workpiece, and the vacuum channel is ...

TRACK TYPE OMNIBEARING MOVING PLATFORM

A track type omnibearing moving platform is mainly composed of a moving mechanism, a control subsystem, a drive subsystem, and a power subsystem. The moving mechanism is composed of a plurality of omnibearing moving tracks, and the plurality of omnibearing moving tracks is arranged like the four-wheel set of an automobile. The omnibearing moving track is mainly composed of a driving wheel (12), track plates (13), a roller (14), a loading wheel (15), a towing wheel (16) and an induction wheel (17). The roller (14) is fixed on a roller bracket (23) of each track plate, and the rotation axis thereof forms a certain angle with the axis of the driving wheel (12) of the omnibearing moving track so as to form an offset angle of the roller (14).

BLOCKCHAIN-BASED DOMAIN NAME TRANSACTION METHOD AND APPARATUS

Provided in the embodiments of the present disclosure are a blockchain-based domain name transaction method and apparatus, the method comprising: establishing a blockchain system used for domain name transactions; and domain name sellers, domain name buyers/bidders, domain name registrars, domain name registration authorities, transaction service platforms, and supervisory parties implementing domain name transaction processes by means of the blockchain system. The embodiments of the present disclosure are based on the blockchain mechanism, and provide a universal automated transaction system and procedure independent of the domain name registration authorities and the domain name registrar system, using the blockchain features of being open and transparent and difficult to tamper with to implement fair, just, and secure domain name transactions.

Signal gain adjusting circuit

The invention discloses a signal gain adjusting circuit which comprises a gain adjusting module, a signal rectifying module, a level comparison module, an NAND gate, a first diode, a second diode and a clock signal generating module. The output end of the signal rectification module is connected with the input end of the level comparison module, the first output end and the second output end of the level comparison module are connected with the gain adjustment module, and the first input end of the clock signal generation module is connected with the first output end of the level comparison module. The second input end of the clock signal generation module is connected with the second output end of the level comparison module, and the output end of the clock signal generation module is connected with the gain adjustment module. The signal level is automatically detected only through the level comparison module, and the detection result is fed back to the digital adjustable resistor, so ...

Travertine brick with natural hole texture and preparation process thereof

The invention relates to the technical field of travertine bricks, in particular to a travertine brick with natural hole textures and a preparation process of the travertine brick. The invention relates to a preparation process of a travertine brick with natural hole textures. The preparation process comprises the following steps: step A, applying cover glaze on the surface of a dry ceramic green body and drying; step B, performing ink-jet printing on a hole pattern on the surface of the ceramic body by using sunken ink; and step C, applying protective glaze on the surface of the ceramic green body, drying, and firing for the first time to obtain a brick body with concave holes in the surface. The travertine brick with the concave hole texture is prepared by the preparation process of the travertine brick with the natural hole texture, the production efficiency is high, the natural and smooth hole texture can be formed, the hole effect is obvious, the stereoscopic impression is strong, ...

Plane eccentric lifting device for grid structure

The invention discloses a plane eccentric lifting device for a grid structure, and belongs to the technical field of lifting. The device comprises a lifter, the lifter comprises a guide frame, a jack is installed on a base of the guide frame, a hydraulic regulator is installed at the hydraulic shaft end of the jack, a first tool anchor and a second tool anchor are installed on the guide frame, and inner baffles are arranged in the first tool anchor and the second tool anchor; the first tool anchor is arranged at the top of the guide frame, and the second tool anchor is arranged at the hydraulic shaft end of the jack; the hydraulic adjuster comprises a first hydraulic cylinder and a second hydraulic cylinder, the cylinder end of the first hydraulic cylinder and the cylinder end of the second hydraulic cylinder are both connected with the inner baffle, ejector rods are arranged on the first hydraulic cylinder and the second hydraulic cylinder, and the ejector rods penetrate through holes ...

Terminal registration method and device, electronic equipment and storage medium

The invention provides a terminal registration method and device, electronic equipment and a storage medium, and relates to the technical field of wireless communication networks. The method comprises: receiving an initial registration request message from a terminal, the initial registration request message including an unavailable time range parameter of the terminal, the unavailable time range parameter being used for representing a duration in which the terminal cannot access a network through an infrastructure of a non-ground network; and storing the unavailable time range parameter contained in the initial registration request message into context information of the terminal. According to the invention, repetition of signaling interaction can be reduced, and huge signaling overhead is avoided, so that energy consumption of communication equipment is reduced.

COMPUTER, PRINTER AND DOUBLE-SIDED PRINTING METHOD

Disclosed are a computer, a printer and a double-sided printing method, which overcome the defect in the prior art that an accurate page order of a document from the printer cannot be ensured in the double-sided printing operation of an odd-paged document. The method comprises: counting pages of a document, so as to obtain information about the number of pages of the document; and after it is judged that the document is an odd-paged document with more than one page according to the information about the number of pages of the document, a printer printing data of the last page of the document onto a first surface of an imaging medium, and performing empty paper feeding on a second surface of the imaging medium once according to an empty paper feeding instruction. The embodiments of the present invention can guarantee that the ranked imaging medium page order can be placed in order, so that a user does not need to adjust the page order of a printed imaging medium, thereby reducing the operations ...

Port configuration method and device, storage medium and computer equipment

The embodiment of the invention provides a port configuration method and device, a storage medium and computer equipment. The method comprises the following steps: acquiring a port protocol identifier of a target image forming device; if it is determined that the port protocol is the first protocol according to the port protocol identifier, a preset protocol setting command is sent to the target image forming device, so that the target image forming device sets the port protocol as the preset protocol according to the preset protocol setting command, and therefore the problem of port configuration conflicts is solved before the equipment drive program is installed; therefore, the computer equipment can normally install the equipment driver after changing the port protocol of the image forming device.

Six-degree-of-freedom wireless magnetic positioning system, method and device based on soft magnet

The invention discloses a six-degree-of-freedom wireless magnetic positioning system, method and device based on a soft magnet, and the system comprises a magnetic source module which is used for generating an alternating magnetic field; the soft magnet is installed at the tail end of the instrument to be tested, and the instrument to be tested is in rigid connection with the soft magnet, so that stress and torque borne by the soft magnet are transmitted to the instrument to be tested; the soft magnet works in an alternating magnetic field; the magnetic field detection device is used for detecting the magnetic field change caused by the movement of the soft magnet; and the processor is used for measuring the pose of the soft magnet according to the detected magnetic field change, obtaining the pose of the soft magnet and calculating the pose of the tail end of the detected instrument according to the pose of the soft magnet. According to the invention, the soft magnet is used as a passive ...

Standardized power battery module and acquisition board connecting structure and connecting method thereof

The invention discloses a standardized power battery module and acquisition board connecting structure and a connecting method thereof. The connecting structure comprises a quick-plug connector and a plurality of wire harnesses, the quick-plug connector comprises a female-end connector and a male-end connector which are in plug-in connection. A female end connector is arranged at the front end of each power battery module; the standardized battery cell acquisition board comprises a plurality of plug-ins and a plurality of AFE battery cell acquisition chips, and each plug-in corresponds to a battery cell of each AFE battery cell acquisition chip and an acquisition port of the temperature sensor one by one; the female end connector at the front end of the power battery module is in plug-in connection with the male end connector; and the male end connector is connected with the plug-in on the standardized battery cell acquisition board through the wire harness. By designing the high-low voltage ...

Heat-resistant endonuclease and gene editing system mediated by heat-resistant endonuclease

The invention discloses endonuclease with high activity and high heat resistance and a gene editing system mediated by the endonuclease, and particularly provides endonuclease Gs12-7 which is identified by combining metagenomics with experiments and is wide in temperature application range, and the endonuclease Gs12-7 has the advantages that the protein temperature tolerance is high, PAM sequences containing BTYV are recognized, and the gene editing efficiency is high. Therefore, the gene editing space is larger, and the target DNA is cleaved in the genome in a high-activity and high-specificity manner. The CRISPR/Gs12-7 system-mediated nucleic acid visual detection and genome targeted editing technology is established, and the CRISPR/Gs12-7 system-mediated nucleic acid visual detection and genome targeted editing method has a wide application prospect in the fields of genome site-specific modification and nucleic acid detection.

Application of cotton gene GthICE2 in drought resistance and cold stress resistance of plants

The invention relates to the field of gene engineering, in particular to application of a cotton gene GthICE2 in drought resistance and cold stress resistance of plants. According to the invention, an arabidopsis thaliana homozygous line over-expressing the GthICE2 gene is obtained through a transgenic technology, and after drought and cold treatment, the tolerance of the arabidopsis thaliana homozygous line to drought and cold stress is obviously improved. The invention has important significance in breeding and research for improving drought resistance and cold resistance of cotton, and can be applied to breeding of stress-resistant cotton varieties.

DETECTION DEVICE FOR PERPENDICULARITY OF PILE BODY

A detection device for perpendicularity of a pile body, used for measuring the perpendicularity of a pile body (8), and comprising a main body (1), a telescopic rod (3), a dial (4), an indicator (5), and slots (6); wherein the main body (1) is a straight rod; the telescopic rod (3) is provided on the top end of the main body (1); the indicator (5) is provided on the top end of the telescopic rod (3); the indicator (5) is parallel to and not aligned with the telescopic rod (3); the dial (4) is hung on the indicator (5) by means of a pull rope; angle scale marks are provided on the dial (4); the scale marks on the dial (4) are circularly arrayed; a joint of the pull rope and the indicator (5) is a center of circle of the scale marks; the slots (6) are respectively formed on side surfaces at two ends of the main body (1); grooves parallel to the main body (1) are formed in the slots (6). The detection device can be used for detecting the perpendicularity of the underwater pile body (8); the ...

Solder strip connecting device and battery string repairing method

The invention provides a welding strip connecting device and a battery string repairing method, the welding strip connecting device is used for connecting a first welding strip and a second welding strip, the welding strip connecting device comprises a welding strip clamping mechanism, a welding mechanism and a bonding mechanism, the welding strip clamping mechanism clamps the first welding strip and the second welding strip, and the bonding mechanism is used for bonding the first welding strip and the second welding strip; the first welding strip and the second welding strip are in horizontal lap joint; the welding mechanism is used for welding a first welding strip and a second welding strip which are horizontally lapped; and the bonding mechanism is used for bonding the first welding strip and the second welding strip which are horizontally lapped. According to the welding strip connecting device, double fixing of the first welding strip and the second welding strip is achieved, in the ...