Product
Patsnap Eureka
For R&D, Patsnap Eureka makes reading and utilizing patents & technical documents easy.
Patsnap Eureka AIR
Designed for self-driven R&D workflows. Generate viable solutions, solve complex R&D challenges, empower your innovation with AI.
Patsnap Eureka Materials
Designed for material experts only. Revolutionize your material R&D, from search, analyze, to developing new materials.
Feature
TechResearch
Generate reliable direction feasibility study reports for your R&D in just a few steps.
TechSeek
Discover and master advanced knowledge NOW. Basics, ideas, possibilities, all at once.
TechMind
As an expert in R&D Theories, TechMind can generates customized viable solutions instantly.
TechRisk
Analyze your overall solution with one click, know your potential R&D risks in advance.
TechMonitor
Get weekly tech updates, stay abreast of the latest tech innovations and key insights.
Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
58results about How to "Fast and Accurate Testing" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
System and method for debugging a software program
InactiveUS20030192032A1Fast and Accurate TestingAccurate and efficient matchingDetecting faulty computer hardwareCAD circuit designComputerized systemProgrammable hardware
A system and method for debugging a program which is intended to execute on a reconfigurable device. A computer system stores a program that specifies a function, and which is convertible into a hardware configuration program (HCP) and deployable onto a programmable hardware element comprised on the device. The HCP is generated based on the program, specifies a configuration for the programmable hardware element that implements the function, and further specifies usage of one or more fixed hardware resources by the programmable hardware element in performing the function. A test configuration is deployable on the programmable hardware element by a deployment program, where, after deployment, the programmable hardware element provides for communication between the fixed hardware resources and the program. The program is executable by a processor in the computer system, where during execution the program communicates with the one or more fixed hardware resources through the programmable hardware element.
Owner:NATIONAL INSTRUMENTS
Method for automatically testing communication functionality of device under test and computer-readable media thereof
ActiveCN103164311AShorten development timeShorten test timeError detection/correctionTransmissionComputer hardwareFunctional testing
An exemplary embodiment of present disclosure illustrates a method for automatically testing communication functionality of a device under test (DUT). The method is adapted for driving and controlling at least an instrument to test communication functionality of a DUT through a computing device. The method includes steps described as follows establishing a communication functionality testing system and providing a user interface installed in the computing device, wherein the user interface includes a DUT selection window providing a plurality of DUT module selections; a testing menu window, providing various preset testing item selections; a selected test list displaying configurable sequence for the selected testing items of a specific testing task; a property table provides property and parameter configurations associated with a selected testing item; and a DUT and instrument configuration window for configuring hardware properties of the DUT and instruments as well as the calibration data of the instruments.
Owner:UNIVERSAL SCIENTIFIC INDUSTRIAL (SHANGHAI) CO LTD
LEAK DETECTION FORMULA, ANALYZER and METHODS OF USE
ActiveUS20140251831A1Fast , accurate leak testQuickly and accurately findWeather/light/corrosion resistanceVolume/mass flow measurementAmount of substanceEngineering
Detecting a leak from a site in a sealed system with a source of pressurized gas which is capable of passing through the site, a composition of matter which adheres to the surfaces of the system and which is capable of showing the presence of the gas escaping from the site. The method includes: injecting gas into the system to a pressure in excess of the surrounding pressure, and covering the external surface with the composition to identify the location of the site by the interaction of the escaping gas with the composition. The composition is foam that includes a surfactant which forms a least one bubble in the presence of escaping gas and an indicator which changes color in the presence of the escaping gas. The leak is an opening down to at least the size of a hole 0.001″ in diameter. A gas detector may also be used.
Owner:AUTOMOTIVE TEST SOLUTIONS
Device and method for testing sliding resistance of brake caliper assembly
ActiveCN103728082ASimple structureImprove test efficiencyMechanical counters/curvatures measurementsApparatus for force/torque/work measurementBrake torqueCalipers
The invention relates to the field of automobile braking torque testing devices and aims at providing a device and method for testing the sliding resistance of a brake caliper assembly. The device for testing the sliding resistance of the brake caliper assembly comprises a machine frame, a testing linear guide rail, a testing assembly, a fixing and holding assembly and a testing loading mechanism, wherein the testing linear guide rail is fixedly connected with the machine frame, the testing assembly is fixedly connected with a sliding block of the testing linear guide rail, and the fixing and holding assembly is located on the back side of the testing assembly and fixedly connected with the machine frame. The device for testing the sliding resistance of the brake caliper assembly is high in efficiency and precision of testing the sliding resistance of the brake caliper assembly.
Owner:HANGZHOU WOLEI INTELLIGENT TECH
Parameter adaptability testing method for PSS (Power System Stabilizator) of grid system
ActiveCN102879698AAccurate and fast adaptabilityFast and Accurate TestingElectrical testingPower system stabiliserPower grid
The invention discloses a parameter adaptability testing method for a PSS (power system stabilizator) of a grid system, which can be used for effectively measuring the adaptability of a parameter of the PSS. The parameter adaptability testing method for the PSS of the grid system comprises the following steps of: carrying out dynamic modeling on a multi-machine power system; calculating a full-dimensional characteristic value of the system; testing the sensitivity of the characteristic value to a PSS gain coefficient; determining the optimal value of a PSS phase shifting link by using a characteristic value sensitivity variation curve; and testing the adaptability of the parameter of the PSS.
Owner:STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST +1
Vehicle proportion relay valve detection device and method
ActiveCN106706234AImprove test efficiencyImprove test accuracyMeasurement of fluid loss/gain rateInternal combustion piston enginesTest efficiencyPneumatic circuit
The present invention discloses a vehicle proportion relay valve detection device. The device is fixed at a test bed, and comprises a top cap D-1 fixing the proportion relay valve, a pedestal D-2, three bracing pieces Z-1, Z-2 and Z-3, a cylinder tool V-1 blocking the air inlet 1 of the proportion relay valve, a cylinder tool V-2 blocking the control port 4-1 of the proportion relay valve and a cylinder tool V-3 blocking the air outlet 2 of the proportion relay valve; each cylinder is provided with an end cap; and air is flown in from the air inlet of the cylinder to extend the end cap forwards connected with the cylinder to block the interface of the proportion relay valve. The present invention further provides a pneumatic circuit of the vehicle proportion relay valve detection device and a vehicle proportion relay valve detection method. The detection device is high in test efficiency and test precision. The fixed component structure is simple and practical and high in clamping precision.
Owner:CHINA JILIANG UNIV
Power test facility system of train and testing method of the same
InactiveUS6837099B2Fast and Accurate TestingEngine testingWork measurementOperational costsMeasurement device
The present invention relates to a power testing facility system of a train and a testing method using the same. In the present invention, there are provided a test bed for engaging a testing object, a DC power facility formed of a converter transformer and DC power converter, an AC power facility formed of a phase balancing apparatus, a voltage regulating transformer, and a power factor improving apparatus, a load facility formed of an induction generator and a bi-directional inverter, a measuring apparatus for measuring various characteristics of a propulsion apparatus, and a control apparatus for controlling the entire system. With the above elements, it is possible to implement a type test, a combination test and a train operation simulation test using a facility system adapted to test a power of a train. When selecting an instrument installed in a train, it is implement a desired reliability by testing a previously fabricated product. The facility is economically operated, and an operation cost is minimized. An easier maintenance is implemented. An electrical energy may be restored using a bi-directional inverter. A power loss is decreased. It is possible to prevent an indoor temperature increase.
Owner:SHALOM ENG
Device and method for testing radial permeability of concrete gas
InactiveCN110231270AFast and Accurate TestingSimple structureMeasurement of fluid loss/gain ratePermeability/surface area analysisSelf sensingPneumatic pressure
The invention discloses a device and a method for testing the radial permeability of concrete gas. The device comprises a pressure device and a gas conveying device; the pressure device comprises a sample, a rigid sealing device arranged between the upper end and the lower end of the sample, a loading device which acts on the rigid sealing device, a sensing gasket placed between the sample and thecontact surface of the rigid sealing device, and a universal meter connected with the sensing gasket; and the gas conveying device is connected with the pressure device. According to the device and the method disclosed by the invention, a flexible sensor is embedded into an elastic gasket to prepare the self-sensing gasket for monitoring a load borne by the sample; the problem of concrete sealingand load quantification is solved; the quantitative real-time capture of the air pressure change in the gas permeation process is realized through a high-precision barometer in the gas conveying device; and the quantitative representation of a radial permeability coefficient of the concrete gas is realized.
Owner:SOUTHEAST UNIV
Hemolytic streptococcus diagnostic immunochromatography reagent, kit, and detection method
ActiveUS20160370368A1High-sensitivity and quick testingRequires preparationImmunoassaysOrganic acidNitrite
Disclosed herein is an immunoassay method for detecting the detection target antigen in an analyte through extraction with an extraction agent. The method is characterized in that the detection is performed in the presence of a cyclic oligosaccharide. The method is also characterized in the use of an immunochromatography kit for detecting gram-positive bacteria in an analyte, and that is configured from an analyte dilution solution, a sample dropping part, an antigen extracting part, a labeling substance retaining part, an immunochromatography medium having a detection part, and an absorption part, and in which an organic acid is retained in the antigen extracting part. The immunochrornatography kit contains a cyclic oligosaccharide and a nitrite compound by containing at least one of a cyclic oligosaccharide, a nitrite compound, and a mixture thereof in the analyte dilution solution and / or the sample dropping part.
Owner:TANAKA PRECIOUS METAL IND
Device and method for testing liquid consumption of hydraulic brake caliper comprehensive performance test bed
The invention discloses a device and method for testing the liquid consumption of a hydraulic brake caliper comprehensive performance test bed. Rotational motion can be converted into linear motion by means of the device for testing the liquid consumption of the hydraulic brake caliper comprehensive performance test bed through a ball screw, the linear feeding amount is transmitted to a push rod of a clutch master cylinder, a testing assembly is simple in structure and is practical, and a servo motor which is connected with a speed reducer is connected with the ball screw simply and reliably through a coupler. A testing loading mechanism is simple in structure and high in precision and is provided with a zero setting device. A fixing assembly of the device for testing the liquid consumption is fast to use, accurate, simple in structure, accurate in positioning and convenient to position. According to the method for testing the liquid consumption of the hydraulic brake caliper comprehensive performance test bed, testing can be achieved fast, and the testing accuracy is high. By the adoption of the device for testing the liquid consumption of the hydraulic brake caliper comprehensive performance test bed, accurate testing data of liquid consumption can be provided for improved design. The method accords with the testing standard. By the adoption of the device for testing the liquid consumption of the hydraulic brake caliper comprehensive performance test bed, liquid consumption of a brake caliper can be tested highly efficiently, and the testing precision is high.
Owner:HANGZHOU WOLEI INTELLIGENT TECH
Method for testing underwater plugging-unplugging performance of underwater wet type connector
ActiveCN108008240AImprove test efficiencySimple test methodElectric connection testingMeasurement instrument housingMarine engineeringUnderwater
The invention relates to a method for testing the underwater plugging-unplugging performance of an underwater wet type connector. The method comprises: S1, an underwater wet type connector plug is fixed at a front clamp and an underwater wet type connector socket is fixed at a rear clamp; S2, cables of the underwater wet type connector plug and the underwater wet type connector socket are connected with an external testing device; S3, a motor assembly is started and drives the front clamp to drive the underwater wet type connector plug and the underwater wet type connector socket to be plugged; S4, according to a display result of the external testing device, the performance of the underwater wet type connector is determined; and S5, the motor assembly is turned off and testing is ended. According to the invention, the front clamp and the rear clamp are installed in the water tank to connect the connector plug and the connector socket respectively and fixedly and thus the connector performance is tested in an underwater state, so that the accuracy of the underwater wet type connector is improved; the cables of the plug and the socket are led out respectively and are connected withindicator lamps and the connector performance is determined by observing the on-off situation of display lamps.
Owner:CSSC SYST ENG RES INST +1
Screw pump oil production real-time monitoring device
InactiveCN103727030AFast and Accurate TestingIntuitive test resultsMachines/enginesPump controlElectricityCurrent meter
The invention discloses a screw pump oil production real-time monitoring device which is formed by electrically connecting a screw-pump oil production pump 1, a sensor 2, a signal processing circuit 3, a parameter setting circuit 4, a singlechip 5, a control circuit 6, a display 7, an upper computer 8, a data storage 9 and a printing output circuit 10. The screw pump oil production real-time monitoring device overcomes the defects of common single diagnostic methods such as a current method, a pressure keep-down method and a torque method, comprehensively monitors and diagnoses important parameters of the working condition of a screw pump, such as an oil pressure, a casing pressure, a voltage, a current and a torque, provides an effective means for scientifically and evaluating performance of the screw pump in time, and has the advantages of rapidness and accuracy for testing, visuality for displaying a test result, low testing cost and the like.
Owner:刘晶
Leak detection formula, analyzer and methods of use
InactiveUS20140151242A1Fast and accurate leak testingQuickly and accurately findWeather/light/corrosion resistanceVolume/mass flow measurementChange colorGas detector
Detecting a leak from a site in a sealed system with a source of pressurized gas which is capable of passing through the site, a composition of matter which adheres to the surfaces of the system and which is capable of showing the presence of the gas escaping from the site. The method includes: injecting gas into the system to a pressure in excess of the surrounding pressure, and covering the external surface with the composition to identify the location of the site by the interaction of the escaping gas with the composition. The composition is foam that includes a surfactant which forms a least one bubble in the presence of escaping gas and an indicator which changes color in the presence of the escaping gas. The leak is an opening down to at least the size of a hole 0.001″ in diameter. A gas detector may also be used.
Owner:AUTOMOTIVE TEST SOLUTIONS
Test method and test device for touch panel
ActiveCN110082631AThe testing process is simpleFast and Accurate TestingElectrical testingTouch panelTime difference
The invention provides a test method and a test device for a touch panel. Each driving touch line of the touch panel is driven by two connected driving electrodes, each induction touch line of the touch panel is driven by one connected induction electrode, and the test method of the touch panel comprises the following steps: sending a test signal to at least one induction electrode of the touch panel; whether the two driving electrodes corresponding to the driving touch lines receive the coupling signals or not is tested; if yes, judging whether the driving touch lines are broken or not according to the relationship between the time difference between the time when the two driving electrodes corresponding to the driving touch lines receive the coupling signals and a time threshold value; and if not, determining that the driving touch lines are subjected to routing disconnection. According to the invention, the test signal is sent to at least one sensing electrode of the touch panel, and the time difference of receiving the coupling signal by the two driving electrodes corresponding to the driving touch line is compared, so that whether the driving touch line is broken or not can besimply, quickly and accurately tested.
Owner:KUSN INFOVISION OPTOELECTRONICS
Leak detection formula, analyzer and methods of use
ActiveUS10222291B2Quickly and accurately findGeneration and useDetection of fluid at leakage pointGas detectorChange color
Owner:AUTOMOTIVE TEST SOLUTIONS
Test device for testing torque coefficient of oversized high-strength bolt
InactiveCN112213019AFast and accurate automated testingTest accurateMeasurement of torque/twisting force while tighteningPhysical performance testingControl system
The invention discloses a test device for testing the torque coefficient of a oversized high-strength bolt, and relates to the technical field of bolt physical performance testing. The test device iscomposed of the following modules: a test platform, a counter-force frame, a power loading device, a loading puller, a puller axial adjustment assembly, a counter-force frame axial adjustment assemblyand a control system. The counter-force frame provides supporting counter-force for the tested bolt, the loading puller is used for clamping the tested bolt and transmitting the supporting counter-force, the power loading device provides torsion power for the tested bolt, and the three modules are matched with the control system so that automatic testing of the torque coefficient of the bolt canbe quickly and accurately carried out. Through axial translation of the counter-force frame and the loading puller, the device can adapt to test requirements of different specifications of tested bolts, and has the advantages of wide application range and high universality.
Owner:中钢集团郑州金属制品研究院股份有限公司 +1
Method for rapidly and accurately determining crystal axis orientation of gallium oxide monocrystals
ActiveCN112394073ALow costFast and Accurate TestingMaterial analysis using wave/particle radiationPreparing sample for investigationWaferingDiffractometer
The invention relates to the technical field of gallium oxide monocrystal processing, and particularly discloses a method for rapidly and accurately determining a crystal axis orientation of gallium oxide monocrystals. The method comprises the following steps: S1, preliminarily judging (010) a crystal plane direction; S2, cutting the initial (010) crystal plane to obtain an S2.1 gallium oxide wafer; S3, determining an initial (010) crystal plane deflection angle by an X-ray diffractometer; S4, precisely cutting the (010) crystal plane to obtain an S4.1 gallium oxide wafer; S5, determining (100) and (001) crystal planes of the S2.1 gallium oxide wafer by a cleavage method; S6, determining the [010] crystal axis direction according to the traces of the (100) and (001) crystal planes of the S2.1 gallium oxide wafer; and S7, determining the directions of [001] and [100] crystal axes of the S2.1 gallium oxide wafer by using an X-ray orientation instrument. The method has the advantage thatthe gallium oxide crystal axis orientation in any unknown crystal direction can be rapidly and accurately determined.
Owner:北京铭镓半导体有限公司
Rapid testing device for wastewater analysis
ActiveUS20220062897A1Tested rather inexpensivelyThe way is simple and fastImage analysisMaterial analysis by observing effect on chemical indicatorWastewaterProcess engineering
A rapid test device includes a micropad chip configured for a multi-parameter chemical testing of an input sample. A plurality of paper layers of the micropad chip are in fluid communication, including a sample absorption element, a filtering element configured to filter the input sample, and a sample distribution element configured to distribute the input sample received from the filtering element to a remainder of the plurality of paper layers. One or more reacting elements associated with the multi-parameter chemical testing of the input sample have one or more colorimetric reagents in fluid communication with the sample distribution element. A colorimetric result displaying element in fluid communication with the one or more reacting elements is configured to display a colorimetric result of the testing of the input sample with the at least one reacting element for a respective chemical test of the multi-parameter chemical testing.
Owner:IBM CORP
Ia type diamond color quick grading method based on spectrum
ActiveCN103090973BEasy to operateFast and Accurate TestingColor measuring devicesReflection spectroscopyDiamond color
Owner:BIAOQI ELECTRONICS TECH
Intelligent mobile device double-contact test device
ActiveCN106292624ATest accurate and fastEnables double contact testingElectric testing/monitoringContact testComputer module
An intelligent mobile device double-contact test device is provided that includes a base, a support rod, a mobile device placement frame, an X-axis telescopic module, a Y-axis telescopic module, a first test telescopic module, a rotating module, an auxiliary telescopic module, a second test telescopic module, a control processing module and a computer device. According to the size of an intelligent mobile device and the software to be tested, test coordinates and a test order are set in the computer device. The computer device instructs, through the set test coordinates and the set test order, the X-axis telescopic Module, the Y-axis telescopic module and the first test telescopic module to test the software, and at the same time achieves a double-contact test by using the rotating module, the auxiliary telescopic module and the second test telescopic module. The intelligent mobile device double-contact test device may accurately and fast test software, saves time and effort, and solves developing dead zones or developing time delay.
Owner:宁德市荣盛文化传媒有限公司
Electret microphone current test circuit and test method thereof
PendingCN107167649AFast and accurate testingThe test result is accurateCurrent/voltage measurementSignal conditioningData acquisition
The invention discloses an electret microphone current test circuit, including a direct current power supply, a digital potentiometer, a first analog switch, a calibration resistor, an electret microphone, a signal conditioning part, a second analog switch, a digital full-amplitude modulation part and a high-performance alternating current coupling data acquisition card. The direct current power supply, the digital potentiometer, the analog switches, the calibration resistor and the electret microphone form a loop, the signal conditioning part consists of a first operational amplifier, a second operational amplifier and a third operational amplifier, the first operational amplifier and the second operational amplifier are connected with the digital full-amplitude modulation part through the second analog switch, and the digital full-amplitude modulation part and the third operational amplifier are connected with the high-performance alternating current coupling data acquisition card. The invention also proposes a test method of the electret microphone current test circuit, and through calculation of an actual Res value of a line and calculation of a microphone current, solves the problem existing in a present electret microphone current test method that a test result is inaccurate.
Owner:杭州兆华电子股份有限公司
Automatic test method and device for voltage analog-to-digital converter and storage medium
The invention discloses an automatic test method and device for a voltage analog-to-digital converter and a computer readable storage medium. The method comprises the following steps: firstly, a testinput file of a voltage analog-to-digital converter is acquired, and the test input file is a test file generated based on high-voltage thresholds and low-voltage thresholds of all channels of the voltage analog-to-digital converter; and secondly, based on data drive and the test input file, a pre-compiled test script is called to automatically test the voltage analog-to-digital converter, and a test result is generated. According to the invention, the problems of low efficiency and error proneness of purely manual test of a voltage analog-to-digital converter in the prior art are solved, anda voltage analog-to-digital converter can be tested efficiently, quickly and accurately.
Owner:SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
Cast steel joint stress test device
InactiveCN108731955AExtend your lifeTest accurate and fastForce measurementStructural/machines measurementMetallurgyJoint stress
The invention discloses a cast steel joint stress test device. The structure of the cast steel joint stress test device comprises a first cast steel joint, a second cast steel joint, a fixed sphere, circular sections, a fixing supporting seat, fixing cylinders, a third cast steel joint, rolling balls, ring blocks, a fourth cast steel joint, protective covers, stress test devices, cast steel innerwalls, grooves, cushion blocks and a reinforcement foot; the circular section is connected with the corresponding fixing cylinder; the fixed cylinder is provided with the corresponding protective cover; the ring block is connected with the corresponding rolling ball through the corresponding cushion block; the cast steel inner wall is connected with the corresponding stress test device; and the fixing supporting seat is connected with the reinforcement foot. According to the cast steel joint stress test device, the stress test devices are adopted, so that the stresses value of the cast steel joints can be accurately and quickly measured; and the rolling balls are arranged in the grooves, so that a rolling effect can be realized, and therefore, the positions of connection holes are changed.The cast steel joint stress test device has the advantages of high safety and structural simplicity. The fixing cylinders are provided with the protective covers, so that the service life of cast steel can be greatly prolonged.
Owner:镇江兴盛铸钢有限公司
Wire wrapping tension test device and test method
The invention discloses a wire wrapping tension test device and test method. The device comprises a pedestal installed in an adjustable manner and a forcemeter arranged on the pedestal; an analog stressed piece is connected with the forcemeter, the analog stressed piece comprises a connection arm and a tension block connected with the forcemeter, the tension block simulates partial circumferentialwall of a magnet ring, and the resultant force direction of stresses of the tension block is accordant with the direction of the test force of the forcemeter. When in test, the stressed end of the forcemeter is connected with the analog stressed piece, and the forcemeter is fixed, so that the direction of the tension suffered by the analog stressed piece is accordant with the stress direction ofthe actual stressed piece, the tension suffered by the analog stressed piece can be test by wrapping a wire. The device provided by the invention is simple in structure and easy to install and fine tune; the test method is easy to operate and simple in process, can be applied to test the wire wrapping tension on a testing machine on the scene, and adjust in time without changing the structure of the whole machine, and is accurate and quick to test.
Owner:ZHONGSHAN COMPETENT AUTOMATION EQUIP CO LTD
Tool for quickly testing electrical property of power transformer
InactiveCN105759152AThe test effect is goodFast and Accurate TestingElectrical testingContact testElectricity
The invention discloses a tool for quickly testing electrical property of a power transformer. The tool includes a testboard support, wherein a test product placing area is arranged on the testboard support; a plurality of test probes are arranged above the test product placing area, and are electrically connected with a pneumatic device; the pneumatic device controls the test probes to move up and down; and the plurality of test probes are also connected with a digital display meter. The tool for quickly testing electrical property of a power transformer can solve the problems that if a meter pen is used manually to contact test points one by one to test the power transformer, the generated test time is long and an error in operation easily occurs, and can acquire a better test result of the a power transformer, and can be quicker and more accurate in testing the power transformer.
Owner:NANTONG MILANTE ELECTRIC
Gas pressure rapid measuring device and measuring method
The invention relates to the technical field of coal seam gas pressure measuring, in particular to a gas pressure rapid measuring device. The device comprises at least four hole sealing capsules, a gas injection device, a gas injection pipe, a pressure measuring pipe, and a control device. The hole sealing capsules are arranged inside a drill hole at intervals to form a second hole sealing section, a gas injection space and a first hole sealing section which are sequentially arranged in the direction from a coal seam to a drill hole opening. The first end of the pressure measuring pipe penetrates through the hole sealing capsules and the coal seam and extends to a pressure measuring gas chamber; the second end of the pressure measuring pipe is sealed or provided with a pressure gauge; thefirst end of the gas injection pipe is open and arranged inside the gas injection space; and the gas injection device is connected with the second end of the gas injection pipe which is provided withan gas injection switch. A first pressure sensor and a second pressure sensor are arranged on the pressure measuring pipe and the gas injection pipe respectively; the control device is in signal connection with the first pressure sensor, the second pressure sensor and the gas injection switch respectively; and the measuring device is suitable for the rapid measurement of underground coal seam gaspressure. The invention also provides a gas pressure rapid measuring method.
Owner:CCTEG SHENYANG RES INST
Testing device of smart mobile device
InactiveCN106353113AFast and Accurate TestingStructural/machines measurementSoftware testing/debuggingBlind zoneTime delays
A testing device of a smart mobile device comprises a bracket base, a supporting rod, a placing frame of a mobile device, an X-axis telescopic module, a Y-axis telescopic module, a testing telescopic module, a control processing module and a computer device; according to the size of the smart mobile device and the software to be tested, testing coordinates and testing order shall be set on the computer device, and the computer device controls the X-axis telescopic module, the Y-axis telescopic module, and the testing telescopic module to test the software through the testing coordinates and the testing order; thus the software can be exactly and rapidly tested; the testing devices saves time and labor, and solves the problem of blind zone of development or time delay of development.
Owner:厦门睿搜网络科技有限公司
Tester for finger force
InactiveCN1963422AFast and Accurate TestingOvercome problemsForce measurement by elastic gauge deformationEngineeringFinger force
This invention discloses one finger force test device, wherein its test parts are set with pressure part or stretch part for finger test to send pressure onto sensor elements or to send pressure source stretching force into stretching part; the sensor element and pressure source are connected to display element to display the finger pressure or anti-stretching size onto display element; it provides user with rapid and accurate pressure or anti-stretching force.
Owner:李建明
Method for testing frequency characteristic of front plate of fiber-optic gyroscope
InactiveCN103412249AHigh precisionFast testElectronic circuit testingPhase shiftedDigital conversion
The invention discloses a method for testing the frequency characteristic of a front plate of a fiber-optic gyroscope. The method includes the steps that a frequency control word corresponding to each testing frequency point is preset, cosine sweep check digital signals and reference digital signals are acquired by using a direct digital frequency synthetic method, wherein the reference digital signals are formed by conducting 90-degree phase shifting on the cosine sweep check digital signals, the cosine sweep check digital signals are converted into cosine sweep check analog signals and then input to the front plate of the fiber-optic gyroscope, analog digital conversion is conducted on output signals of the front plate of the fiber-optic gyroscope, and then the sample sequence of the output signals of the front plate of the fiber-optic gyroscope is acquired; two paths of correlation coefficients are acquired through correlation operations; all the testing frequency points are repeated to acquire the sequence of the two paths of correlation coefficients, and then the sequence is sent to an upper computer; parameters of the amplitude-frequency characteristic, parameters of the phase-frequency characteristic and parameters of the frequency characteristic of the front plate of the fiber-optic gyroscope are calculated and acquired. According to the method, the frequency characteristic of the front plate of the fiber-optic gyroscope can be rapidly and accurately measured, and the device utilizing the method has the advantages of being simple in structure, low in cost, high in measuring speed, large in measuring frequency range, and high in accuracy.
Owner:ZHEJIANG UNIV
A S-shaped jamming beam test method based on frequency steered array
ActiveCN108761414BImprove practicalityImprove concealmentWave based measurement systemsBeam patternInterference wave
The invention discloses a method for testing S-shaped interference beams based on a frequency control array, comprising the following steps: S1. Selecting a radar test receiver according to the distribution position of a preset S-shaped interference beam in space of a frequency control array radar transmitter The placement point is the test receiving point; S2, make the frequency control array radar transmitter start to transmit signals, and make each test receiving point receive all the transmitted signal data of at least one preset transmission cycle through the test receiving point; S3 1. Determine the test data of each test receiving point according to the received transmission signal data; S4. According to the spatial position and test data of each test receiving point, draw the two-dimensional beam diagram of the frequency control array, that is, fit the S-shaped interference beam. The invention solves the problems of low practicability, low concealment, low test efficiency, high implementation cost and large capital investment existing in the prior art.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Patsnap Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com