Converter

The utility model provides a converter includes: the lower cover, be provided the drive plate of covering down, with drive plate electrical connection's power strip, passing signal pencil, power pencil with the control panel that the drive plate links to each other, be provided with the upper cover of control panel, wherein, the drive plate includes drive circuit, drive circuit includes: the drive the middle and upper bridge arm IGBT's of converter major loop drive opto -coupler, and drive bridge arm IGBT's driver chip under in the major loop, the signal pencil with be equipped with clearance between the power pencil. Drive circuit on the drive plate adopts the middle and upper bridge arm IGBT of drive opto -coupler drive major loop, can solve the safety standard compliance problem of the non - isolation scheme of converter in this application, and solve prior art is with the expensive problem of avoiding the electric shock.

Highway charge monitoring system with novel network structure

The utility model discloses a highway charge monitoring system with novel network structure, including being provided lane camera in charge station's the lane in which the drivers should pay fees and the charge video system of being connected mutually with lane camera output interface and charge data system, the lane camera for have simultaneously provide between two digital output interface and the two output interface physical isolation, do not have the high definition internet protocol camera of virtual data interchange function each other, the charge video system is connected with one of them digital output interface mutually, the data system that charges is connected with another digital output interface mutually, the utility model discloses having simplified charge monitoring system's network structure, having made system device obtain retrenching, the circuit cable of system cabling significantly reduces, has reduced the equipment trouble point, has reduced the investigation degree ...

WDM LAYER-BASED OPTICAL CHANNEL PROTECTING DEVICE AND THE METHOD THEREOF

Method for predicting energy consumption in turning process of numerical control lathe

The invention relates to the technical field of data processing, and provides a numerical control lathe turning process energy consumption prediction method, which comprises the following steps: acquiring acquired data, and obtaining a difference value between the acquired data and an extracted part of the acquired data; obtaining a same-class data set and a different-class data set of the collected data according to the difference value, and obtaining the same-class saliency and the different-class similarity of the collected data; obtaining a weight factor of the collected data and a close degree of the collected data; obtaining a lag coefficient of the collected data according to the closeness degree of the collected data; and acquiring an actual acquisition sequence and a standard sequence, updating the actual acquisition sequence according to the weight factor and the lag coefficient to obtain a reference sequence, calculating the grey correlation degree of each piece of data, predicting ...

Gastroenteritic disease treating medicine and its preparation

Method for grinding conical bearing large cone angle roller for wind power generation

The invention relates to a processing method for grinding a large cone-angle roller of a wind power generation conical bearing, which comprises the following steps: 1, performing plunge grinding for multiple times through fine grinding and accurate grinding on the same machine tool of a novel grinding machine MG1080B; 2, performing plunge grinding on the outside diameter of a taper roller, and using a grinding wheel master plate with the diameter R of 100 meters to perform processing and using a manual oilstone to perform reciprocating grinding, wherein the outside diameter allowances of the roller are different and are divided into three parts, the size of the outside diameter of the roller after the final grinding is 1.5mu m, and the convexity of the outside diameter of the roller is 1.5mu m; and 3, adopting a grinding wheel master plate with the diameter R of 40 meters to process grinding slopes on two ends of the roller, and adopting a rubber grinding wheel of No. 100 to process radial ...

SCREEN PROTECTIVE SYSTEM FOR COMPUTER HARD DISC DATA

The screen protective system can be implemented for the computer with hard disc. Said hard disc data screen protective method is that the hard disc data screen protective system is started by the special purpose chained list on floppy disc, so as to achieve the goal of protection of user's hard disc data. Its main usages are: (1) capable of immunity form the international current virus of computer and its variety; (2) capable of implementing the empowering control, those users who have not been empowered can not use it; (3) capable of paralled operation of the hard disc and not affacting the other users.

Gastroenteritic disease treating medicine and its preparation

The medicine is prepared with the Chinese medicinal materials including heartleaf saussurea root, purple garden burnet, Resina Draconis, banksia rose and Tsaoko fruit, as well as proper amount of supplementary material and through certain technological process. It is used in treating gastric cavity flatulence, anorexia, eructation, diarrhoea, constipation, etc. owing to its functions of invigorating stomach, relieving indigestion, regulating vital energy, relieving pain, eliminating dysentery and stopping bleeding.

ECOLOGICAL CHAMBER, ESPECIALLY ECOLOGICAL CHAMBER POTTED LANDSCAPE AND ITS PREPARING METHOD

RNA REVERSE TRANSCRIPTION AMPLIFICATION METHOD

A ribonucleic acid (RNA) reverse transcription amplification method, comprising the steps of reverse transcription of RNA into cDNA and immediate amplification of cDNA, characterized in that the process of reverse transcription of RNA into cDNA is completed during the process that a cDNA amplification reaction system is heated to reach the reaction condition for cDNA amplification. The RNA reverse transcription amplification method can combine the reaction condition for reverse transcription of RNA into cDNA with the reaction condition for cDNA amplification, thereby significantly shorten the time required for RNA reverse transcription amplification. And in the whole process of RNA reverse transcription amplification, there is no need to change the instrument temperature, and thus, it is possible to achieve detection at any time. 1. An RNA reverse transcription amplification method , comprising reverse transcription of RNA into cDNA and immediate amplification of cDNA , wherein the process of the reverse transcription of RNA into cDNA is completed under reaction conditions for amplification of cDNA.2. The RNA reverse transcription amplification method of claim 1 , wherein completing the process of the reverse transcription of RNA into cDNA under the reaction conditions for amplification of cDNA means that in the initial stage of cDNA amplification reaction claim 1 , during which a cDNA amplification reaction system is heated to reach the reaction conditions for amplification of cDNA claim 1 , the process of the reverse transcription of RNA into cDNA is completed.3. The RNA reverse transcription amplification method of claim 2 , wherein the heating to reach the reaction conditions for amplification of cDNA means that the temperature is raised from 0° C. or above.4. The RNA reverse transcription amplification method of claim 3 , wherein the heating to reach the reaction conditions for amplification of cDNA means that the temperature is raised to a thermal denaturation ...

Method for comprehensively testing recommending position

The invention provides a method for comprehensively testing a recommending position, which comprises the following steps: firstly providing at least a psychological test table, and using the psychological test table to analyze resume data of incumbents at different positions in a resume database to respectively obtain a corresponding job position recommending norm; then utilizing the psychological test table to test a job seeker to obtain a testing result; and finally comparing the testing result corresponding to the psychological test table with the job position recommending norm to obtain at least a recommending position and recommending the position to the job seeker. The invention can cause the job seeker to not only clearly know personal speciality from the testing result in the psychological test table but also understand what job positions the job seeker is suitable for based on the personal speciality thereof.

Vibration absorption feeding device of bar numerical control roller lathe

The invention discloses a vibration absorption feeding device of a bar numerical control roller lathe, which comprises a vertical guide shaft (5), abrasion-resistant copper sleeves (6), a fixing frame (8), a supporting frame (9), a horizontal guide shaft (10), an abrasion-resistant copper sleeve (12), a moving frame (13), a cylinder (17), a pressure plate (18), a pressure plate (19), a compaction roller set and a bottom connecting plate (33), wherein the vertical guide shaft (5) is connected with the fixing frame (8) through fixing blocks (1) at two ends; the fixing frame (8) is arranged on the supporting frame (9); sliding seats (27) are fixed at two ends of the horizontal guide shaft (10) through nuts; and the abrasion-resistant copper sleeves (6) are arranged at the upper and lower ends in the sliding seats (27). According to the vibration absorption feeding device of the bar numerical control roller lathe, the rotary motion of a bar is decomposed into vertical motion and horizontal ...

Method for controlling charring process in light hydrocarbon cracking device

The invention discloses a control method for a coke-burning process in a light hydrocarbon cracking device, belonging to the field of preparation of ethylene by cracking light hydrocarbon in petrochemical industry, which adopts diluted steam (DS) and coke-burning air (DA) in the light hydrocarbon cracking device as coke-burning reaction raw materials, adopts a method of combining time gradient and furnace tube outlet temperature (COT) temperature rise gradient, and adopts a chemical reaction equilibrium principle to control the coke-burning process in the light hydrocarbon cracking device. The charring reaction rate is controlled. According to the control method of the charring process, raw materials are cheap and easily available in a light hydrocarbon cracking device, and the charring is orderly and controllably carried out by fully utilizing the chemical equilibrium principle and changing the reaction temperature, the reactant concentration and the reactant partial pressure mode. Compared ...

Reaction tube for nucleic acid amplification capable of controlling liquid circulation path

Disclosed are a reaction tube for nucleic acid amplification capable of controlling a liquid circulation path, a reaction apparatus for nucleic acid amplification comprising the reaction tube, and a method for amplifying nucleic acid comprising a step of using the reaction tube. Also disclosed are a kit comprising the reaction tube, and use of the reaction tube in preparation of a kit.

POTTED FLOWER-AND-PLANT LANDSCAPE WITH CULTIVATING SOIL SEPARATED FROM THE WATER OR NUTRIENT LIQUID AND ITS PRODUCTION

Biogas and leachate integrated pumping and drainage system for garbage landfill

Detection Mechanism for Polymerase Chain Reaction and Polymerase Chain Reaction Device

The present invention relates to a detection mechanism for polymerase chain reaction and a polymerase chain reaction device, wherein the detection mechanism comprises at least one excitation module group, each of the excitation module groups comprising two excitation modules for providing excitation light with two wavelengths; an excitation optical fiber, connected to the excitation modules, the excitation optical fiber transmitting the excitation light to at least one reaction tube, each of the reaction tubes receiving excitation light with two wavelengths; a receiving optical fiber, for collecting and transmitting a fluorescent signal from the reaction tube; at least one receiving module group, connected to the receiving optical fiber, each of the receiving module groups comprising two receiving modules, to respectively receive the fluorescent signal of two wavelengths from the same said reaction tube, and convert the fluorescent signal into an electrical signal for output; the detection mechanism is configured to detect the reaction tube in a time division manner, and multiplex the receiving module group to obtain an output result. 112-. (canceled)13. A polymerase chain reaction device , comprising:a heating module for providing heat to a convection-type polymerase chain reaction in the device; a low-temperature heating sub-unit;', 'a high-temperature heating sub-unit arranged under the low-temperature heating sub-unit; and', 'a thermal insulation sub-unit arranged between the low temperature heating sub-unit and the high-temperature heating sub-unit, for preventing the low-temperature heating sub-unit from absorbing radiation heat from the high-temperature heating sub-unit; and, 'the heating module includingwherein central portions of the high-temperature heating sub-unit, the low-temperature heating sub-unit and the thermal insulation sub-unit form a reaction hole position for inserting a reaction tube.14. The polymerase chain reaction device according to claim ...

Detection mechanism for polymerase chain reaction and polymerase chain reaction device

The present invention relates to a detection mechanism for polymerase chain reaction and a polymerase chain reaction device, wherein the detection mechanism comprises at least one excitation module group, each of the excitation module groups comprising two excitation modules for providing excitation light with two wavelengths; an excitation optical fiber, connected to the excitation modules, the excitation optical fiber transmitting the excitation light to at least one reaction tube, each of the reaction tubes receiving excitation light with two wavelengths; a receiving optical fiber, for collecting and transmitting a fluorescent signal from the reaction tube; at least one receiving module group, connected to the receiving optical fiber, each of the receiving module groups comprising two receiving modules, to respectively receive the fluorescent signal of two wavelengths from the same said reaction tube, and convert the fluorescent signal into an electrical signal for output; the detection ...

Online visual inspection method for multi-axis multi-channel numerical control system

The invention belongs to the technical field of image processing, and provides an online visual detection method for a multi-axis multi-channel numerical control system, which comprises the following steps of: acquiring to-be-detected and standard automobile gear gray level images; setting a sliding window; the gray value change of the pixel points in the sliding window is analyzed, and the pit feature value of each pixel point is obtained; calculating the curvature change degree of each central pixel point; then obtaining a defect possibility index of each pixel point, and obtaining a defect possibility size image; based on the defect possibility size image, obtaining a possible defect area and a first feature point, and storing a corresponding second feature point in the standard automobile gear gray level image; performing image matching on the feature points to obtain an effective matching rate; and judging whether the to-be-detected automobile gear has quality defects or not according ...

WDM layer-based optical chanel protecting device and method thereof

The present invention discloses a WDM layer-based OChP device and the method thereof, i.e., M protection channels are added in the transmitting module and the receiving module to connect to receiving ends and transmitting ends of M protection channels in the WDM system; a switching device is added so as to switch signals in specified working channels to specified protection channels or switch signals transmitted in specified protection channels back to specified working channels according to switching requests from the WDM system; wherein M and N are natural numbers, and M1, this solution can significantly reduce the risk of ruined backup performance due to above failures, without requiring increased cost.

Magnetic bead-based sample treatment and nucleic acid automatic extraction system

The invention discloses a magnetic bead-based sample treatment and nucleic acid automatic extraction system, comprising a micro-fluidic chip and a micro motor drive device, wherein the micro-fluidic chip comprises a layer of cover plate, two layers of bottom plates and two layers of structure plates, wherein the chip can automatically finish the operation processes such as cell lysis, nucleic acid purification, nucleic acid eluting and the like, and finally a nucleic acid sample is obtained. Based on siphon principle or micro-fluidic surface tension properties, a driven drive pump without external drive force is designed by the chip, so as to achieve flowing and transferring of a detection sample, a reaction reagent and reaction liquid waste. Under mixed hardening of a micro vibration motor, through a periodic alternating magnetic field and a constant magnetic field provided by an external magnet, effective mixing between the magnetic bead and the reaction sample and the reaction reagent ...

One-step molding process of roller bar stock on lathe

The invention discloses a one-step molding process of a roller bar stock on a lathe. The process comprises the following steps of: leveling a right end surface by adopting an end surface cutter; after the end surface is leveled to an appointed size, digging a hole on the right side of a roller; cutting off by using a cut-off tool, and meanwhile, synchronously profiling the left chamfer from the outer diameter of the right chamfer; and after finishing slotting by a slotting tool which is a flat cutter and a 5-degree chamfering cutter, assisting a clamping head to clamp and twist off a roller. By adopting the method, the turning processing of all surfaces of the roller can be finished in one-step clamping, the processed roller is molded at one time and can be directly sent to a grinding procedure after being subjected to heat treatment. The one-step molding process of a roller bar stock on a lathe can be used for realizing the one-step turning and molding of the processed roller, saves the ...

Novel charge keyboard of highway charging system

The utility model discloses a novel charge keyboard of highway charging system, the charge keyboard of the branch regional setting of specifically saying so, keyboard panel handles regionally including being provided with letter district, quick district, functional areas, 4 in numeral district, and wherein the letter district sets up on keyboard panel's upper portion, sets gradually quick district, functional areas, numeral district on the keyboard panel of letter district below from left to right. Make things convenient for the quick accurate input vehicle information of toll collector behind the subregion and in time handle special circumstances for vehicle capacity. Novel keyboard still can effectively prevent the harm that adverse circumstances such as erosion such as high temperature, low temperature, damp and hot, car vibratory impulse, sand blown by the wind were probably brought to the keyboard.

REACTION TUBE FOR NUCLEIC ACID AMPLIFICATION CAPABLE OF CONTROLLING LIQUID CIRCULATION PATH

Disclosed are a reaction tube for nucleic acid amplification capable of controlling a liquid circulation path, a reaction apparatus for nucleic acid amplification comprising the reaction tube, and a method for amplifying nucleic acid comprising a step of using the reaction tube. Also disclosed are a kit comprising the reaction tube, and use of the reaction tube in preparation of a kit. 111432322. A reaction tube for nucleic acid amplification , comprising a tube body () with one end closed , said tube body () comprises a reservoir region () and a nucleic acid amplification region () located below the reservoir region , wherein an insert () is disposed in said nucleic acid amplification region () with an upper space remained above the insert () and a lower space remained below the insert ().22. The reaction tube of claim 1 , wherein when a reagent is injected into the reaction tube claim 1 , the reagent is capable of moving along a circulation path through the upper space and the lower space in the reaction tube under an internal force or external force claim 1 , due to a physical barrier effect of the insert ().3213. The reaction tube of claim 1 , wherein the insert () is provided along the central axis of the tube body () claim 1 , and both sides (a claim 1 , b) of the insert are connected to the inner wall of the nucleic acid amplification region ().45.-. (canceled)61111. The reaction tube of claim 1 , wherein the bottom of the tube body () is closed by means of a bottom plug (-) which cooperates with the tube body ().71. The reaction tube of claim 1 , wherein the tube body () further comprises a tube cover cooperating therewith.89.-. (canceled)1012. The reaction tube of claim 1 , wherein the tube body () and the insert () are made of a heat-resistant material.11. A reaction apparatus for nucleic acid amplification claim 1 , comprising the reaction tube according to and one or more temperature controller capable of providing or removing heat claim 1 , said ...

Flat-panel television surface frame and making method thereof

The invention provides a flat-panel television surface frame, comprising four surface frame strips which are made from pulled aluminum profiles and are connected end to end through a single-face connecting process. The invention also provides a method for making the flat-panel television surface frame. In the flat-panel television surface frame or the making method thereof provided by the invention, because a pulled aluminum profile is adopted as the material of the surface frame and the surface frame strips are fixedly connected end to end by adopting the single-face connecting process, the machining cost can be largely reduced, the production efficiency of the product can be increased and the appearance quality of the product can be improved.

Wdm layer-based optical chanel protecting device and method thereof

The present invention discloses a WDM layer-based OChP device and the method thereof, i.e., M protection channels are added in the transmitting module and the receiving module to connect to receiving ends and transmitting ends of M protection channels in the WDM system; a switching device is added so as to switch signals in specified working channels to specified protection channels or switch signals transmitted in specified protection channels back to specified working channels according to switching requests from the WDM system; wherein M and N are natural numbers, and M1, this solution can significantly reduce the risk of ruined backup performance due to above failures, without requiring increased cost.

Special processing method of conical roller external-diameter logarithm generatrix

The invention discloses a special method for processing outside diameter logarithmic tessellation lines of a tapered roller, which comprises the following steps: 1, carrying out processing technique on the outside diameter semi-convexity of a grinding roller, wherein the semidiameter R of a helical wheel of a first final grinding machine tool is 1,000 meters, and the semidiameter R of the helical wheel of a second final grinding machine tool is 500 meters to ensure that the outside diameter of the tapered roller is convex slightly, and the outside dimension of a final grinding processing roller is required to be controlled within 1.5 microns; 2, adding a slope grinding process of the tapered roller, and performing short line connection between the slope grinding processing of the roller and the final grinding processing, wherein the dimension R of a grinding wheel master plate of a slope grinding machine tool is 6 meters, and the semidiameter R of the helical wheel of the machine tool is ...

Method for grinding conical bearing large cone angle roller for wind power generation

The invention relates to a processing method for grinding a large cone-angle roller of a wind power generation conical bearing, which comprises the following steps: 1, performing plunge grinding for multiple times through fine grinding and accurate grinding on the same machine tool of a novel grinding machine MG1080B; 2, performing plunge grinding on the outside diameter of a taper roller, and using a grinding wheel master plate with the diameter R of 100 meters to perform processing and using a manual oilstone to perform reciprocating grinding, wherein the outside diameter allowances of the roller are different and are divided into three parts, the size of the outside diameter of the roller after the final grinding is 1.5mu m, and the convexity of the outside diameter of the roller is 1.5mu m; and 3, adopting a grinding wheel master plate with the diameter R of 40 meters to process grinding slopes on two ends of the roller, and adopting a rubber grinding wheel of No. 100 to process radial ...

Fully enclosed integrated nucleic acid amplification and detection tube

The invention relates to the field of molecular biology, relates to the field of nucleic acid amplification and detection, and in particular relates to a fully enclosed integrated nucleic acid amplification and detection tube. Furthermore, the invention also relates to a method for amplifying and detecting nucleic acid, which adopts the fully enclosed integrated nucleic acid amplification and detection tube, as well as a kit comprising the fully enclosed integrated nucleic acid amplification and detection tube, and an application of the fully enclosed integrated nucleic acid amplification and detection tube in preparing the kit.

Apparatus and method for detecting invalidation and aging of laser device

The invention discloses a device and method for detecting the failure and ageing of a laser, and the device comprises splitter, laser detector and judger, where the shunt is connected in series with the output end of the laser to split and input a part of laser light into the laser detector for detection; the laser detector detects the current of this part of laser light and sends the detecting result to the judger; the judger judges if the laser has failed or aged. The method can real-time monitor and detect the failure or ageing of the laser to let the maintainers know about it in time and reduce the extent of influence of damage of the laser on a system down to the minimum by alarming and prompting the related personnel to make corresponding preparation and in-time intervention in advance, avoiding grave accident from happening.

Wdm layer-based ochp device and method thereof

The present invention discloses a WDM layer-based OChP device and the method thereof, i.e., M protection channels are added in the transmitting module and the receiving module to connect to receiving ends and transmitting ends of M protection channels in the WDM system; a switching device is added so as to switch signals in specified working channels to specified protection channels or switch signals transmitted in specified protection channels back to specified working channels according to switching requests from the WDM system; wherein M and N are natural numbers, and M < N. Because the number M of protection channels is less than the number N of the working channels, compared with 1+1 or 1:1 protection solution, this solution helps to save optical wavelength resource and initial cost. In addition, compared with 1+1 or 1:1 protection solution, when M > 1, this solution can significantly reduce the risk of ruined backup performance due to above failures, without requiring increased cost.

Wdm layer-based optical chanel protecting device and method thereof

The present invention discloses a WDM layer-based OChP device and the method thereof, i.e., M protection channels are added in the transmitting module and the receiving module to connect to receiving ends and transmitting ends of M protection channels in the WDM system; a switching device is added so as to switch signals in specified working channels to specified protection channels or switch signals transmitted in specified protection channels back to specified working channels according to switching requests from the WDM system; wherein M and N are natural numbers, and M<N. Because the number M of protection channels is less than the number N of the working channels, compared with 1+1 or 1:1 protection solution, this solution helps to save optical wavelength resource and initial cost. In addition, compared with 1+1 or 1:1 protection solution, when M>1, this solution can significantly reduce the risk of ruined backup performance due to above failures, without requiring increased cost.

Conveniently Operated Electronic Lathe

The present disclosure provides a conveniently operated electronic lathe, belonging to the technical field of electronic lathes. The conveniently operated electronic lathe includes a sliding plate box, a longitudinal and transverse reversing detection switch, a longitudinal and transverse operation handle, a rack, a longitudinal and transverse sliding plate, a numerical control system, an electric cabinet, a spindle box, a spindle gear shifting handle. A shaft I, a shaft II, a shaft III, a shaft IV and a shaft V are all rotatably arranged on the sliding plate box. A gear of the shaft III is fixed to the shaft III. A first gear of the shaft II is engaged with the gear of the shaft III. A second gear of the shaft IV is engaged with the first gear of the shaft V.

Conveniently controllable electronic lathe

Nucleic acid amplification reaction tube capable of controlling liquid circulation path