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40results about How to "Comprehensive test parameters" patented technology
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Pumping detecting method based on 4f phase coherent imaging
InactiveCN101109703ANo movementEliminate distractionsPhase-affecting property measurementsRefractive indexLaser beams
The invention discloses a pump detection method based on 4f phase coherence images. Wherein, the laser output by a laser is divided into a pumping light and detecting light; the pumping light is focused after a time-delay platform on a non-linear sample to generate non linearity; the detecting light detects the change in the pumping-light induced non-linear sample, and is recorded by a CCD. By different time delays in the pumping light, the change in the phase and strength of the detecting light emitted from the sample reflects the distribution of particles in the sample at different time periods, so that the absorption sections and service lives and refractivity volume of each energy level are determined. The invention is of simple optic path, the theoretic processing is simple, the single-phase measurement reduces the optic accumulation; the absorption and refracting pumping are completed at the same time without individual measurements, and the size and symbol of non-linear absorption and refraction can be measured concurrently, the sensitivity on the random fluctuation of the laser beam is low, and the measurement results are accurate.
Owner:SUZHOU UNIV
Spaceborne measurement and control transponder self-testing system and method based on lower computer
ActiveCN107612610AReduce manual interventionImprove test efficiencyRadio transmissionWork statusSatellite
The invention relates to a spaceborne measurement and control transponder self-testing system and method based on a lower computer, and aims to overcome disadvantages in the prior art, develop the self-detection and self-testing functions of a spaceborne measurement and control transponder, and transplant a part of ground test tasks onto a satellite, so that intelligent and batch production requirements of satellite test tasks can be rapidly responded. On the basis of the existing testing system and method and experiences, a build-in test BIT technology is introduced in single machine design of the spaceborne measurement and control transponder; therefore, due to software function configuration, after receiving a ground uplink self-testing instruction, the measurement and control transponder monitors and interprets related telemetry parameters, obtains and analyzes the main function and the internal working state of the core module of the measurement and control transponder autonomously and rapidly, and completes telemetry downloading of a self-testing result; and thus, the spaceborne measurement and control transponder has a module self-testing function. By means of the spacebornemeasurement and control transponder self-testing system and method based on the lower computer disclosed by the invention, the comprehensive testing efficiency and the automation degree of the satellite are improved; furthermore, the original normal working mode is not influenced; and the spaceborne measurement and control transponder self-testing method is high in universality and easy to expand, and applied to other single machine equipment on the satellite.
Owner:AEROSPACE DONGFANGHONG SATELLITE
Sealing wear-ring dynamic/static state exciting force effect characteristic parameter testing device and method
ActiveCN107505108AEasy to replaceSimple structureMachine part testingNuclear energy generationAccelerometerClassical mechanics
The invention provides a sealing wear-ring dynamic / static state exciting force effect characteristic parameter testing device and method; the testing device comprises an experiment table body device, a wear-ring loading and measuring device, and a circulation pipeline system; the wear-ring loading and measuring device comprises a dynamic loading measuring device and a static state loading measuring device; the dynamic loading measuring device comprises an exciter assembly, a force transducer assembly and an exciter probe assembly connected in sequence, and an accelerometer assembly arranged on a wear-ring stator and a displacement sensor assembly arranged right opposite to a wear-ring rotor, wherein the exciter probe assembly makes contacts with the wear-ring stator; the static state loading measuring device comprises a loading connecting rod, a spring cover, a force transducer III, a pulley and a pneumatic loading device, wherein the loading connecting rod is connected with the wear-ring stator. The testing device and method can load dynamic / static exciting force for to-be-measured wear-ring sealing, thus making up parameters tested by the static loading measuring device, and providing more comprehensive test parameters.
Owner:ZHEJIANG SCI-TECH UNIV
Spacecraft separation test system and method
InactiveCN106596155AComprehensive test parametersHigh precisionCosmonautic condition simulationsStructural/machines measurementMeasurement deviceSeparation process
The invention provides a spacecraft separation test system and method, and the system comprises a gravity balance device, a suspension device, a suspension point adjustment device, an inertia testing device, a photographing device, and a time signal measurement device. A second separation test piece is fixed with the ground, and a first separation body is connected with the gravity balance device through the suspension point adjustment device and the suspension device. The gravity balance device outputs a balance force, and simulates a weightless environment. After separation, an upper separation test piece can freely rotate at six freedom degrees, and the inertia testing device is used for testing the acceleration and angular speed of the separation body in a separation process. The photographing device tests the separation speed of the separation body, and the time signal measurement device separates time. After the testing of separation parameters, the gravity balance device carries out the deceleration buffering of the separation test piece. The method achieves the complete measurement of separation characteristic parameters of a spacecraft, is high in testing precision, is simple and convenient to operate, is high in efficiency, is high in adaptability, and is safe and reliable.
Owner:SHANGHAI AEROSPACE SYST ENG INST
High-sensitivity frequency domain filtering baffle plate Z-scan method for measuring material nonlinearity
InactiveCN102692382AImprove noise immunityReduce linear backgroundMaterial analysis by optical meansInformation processingPhotonics
The invention discloses a high-sensitivity frequency domain filtering baffle plate Z-scan method for measuring the material nonlinearity, and belongs to the fields of nonlinear photonic material and nonlinear optical information processing. The method of the invention comprises: the focus of a lens forms an image through another lens, and a filtering pinhole is arranged at the point of the image; and a circular diaphragm forms an image through a lens set formed by the above two lenses, and a coaxial circular baffle plate is arranged in the image plane. During the action of pulse laser, a sample moves from side to side near the focus of the lens. Through measuring the non-linear transmittance of an opening, the baffle plate, and the filtering pinhole, the non-linear absorption coefficient and the non-linear refraction coefficient of the material can be determined. The method of the invention is characterized by simple work measurement system optical path, obvious stray light influence filtering effect, high measuring sensitivity, and simple data processing, and can measure non-linear absorption and non-linear refraction at the same time.
Owner:SUZHOU MICRONANO LASER PHOTON TECH CO LTD
Dual-arm backward erosion corrosion testing device
ActiveCN107219138AFeasibility of real-time electrochemical testingGood effectWeather/light/corrosion resistanceInvestigating abrasion/wear resistanceFrequency changerElectricity
The invention discloses a dual-arm backward erosion corrosion testing device. The dual-arm backward erosion corrosion testing device comprises a bracket, a test groove, a computer feedback control system, an electrochemical workstation and two groups of transmission systems, wherein a heater is arranged in the test groove; each group of transmission systems comprises a frequency converter, a rotary table, a sample frame, a revolving shaft and a motor connected with the frequency converter; the motors are connected with upper ends of the revolving shafts; lower ends of the revolving shafts are vertically connected with the rotary tables; the sample frames are vertically connected with the revolving shafts; the computer feedback control system comprises a computer and a control cabinet; the heater and the two frequency converters are connected with the control cabinet; the control cabinet is used for controlling the two groups of transmission systems to drive the two revolving shafts to rotate reversely in order to drive the sample frames on the two rotary tables to rotate in the test groove; outer walls of the revolving shafts are provided with electrochemical assemblies which are connected with the electrochemical workstation, and rotation speed sensors which are connected with the computer. By adopting the dual-arm backward erosion corrosion testing device, dual-shaft reverse rotation is adopted, so that a more accurate relative motion speed can be obtained during rotation of a sample, the flow state stability of a medium can be improved, and an optimal erosion effect is achieved.
Owner:725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
Method for measuring transient state optical nonlinearity of material
InactiveCN105403534ADetermine absorbencyDetermining lifePhase-affecting property measurementsLight energyNonlinear absorption
The present invention discloses a method for measuring transient state optical nonlinearity of a material. According to the method, a laser beam is divided into two laser beams such as pump light and detection light, the pump light passing through delay line is focused onto a sample to be measured to make the non-linear sample produce optical nonlinearity, the detection light passing through the sample is divided into two beams through a light splitter, one beam directly enters a first detector, and the other beam passes through a round baffle, then passes through a round small hole, and finally enters a second detector; and the method is characterized in that the round baffle is placed in the detection optical path in a far filed manner, and the measurement steps comprise: (1) placing the sample to be measured, and respectively collecting the energies of the detection light at different times by using the two detectors, and (2) processing the detection light energy curves at different delay times to obtain the optical nonlinearity parameter. According to the present invention, the measurement system working according to the method of the present invention has advantages of high sensitivity, simple data processing, concurrent nonlinear absorption and refraction measurement, no requirement of separation, and the like.
Owner:SUZHOU MICRONANO LASER PHOTON TECH CO LTD
Method and device for testing communication reliability of tire pressure monitoring system
InactiveCN103754073AImprove test efficiencyEasy to operateTyre measurementsDependabilityTire-pressure monitoring system
The invention relates to a method and a device for testing the communication reliability of a tire pressure monitoring system. The method comprises the following steps: sending testing data through triggering emitters corresponding to all tires; receiving testing data sent by all emitters by a receiver, forwarding the received testing data to a central processing unit; and determining the communication reliability of each emitter and the receiver by the central processing unit according to the received testing data. Compared with the prior art, the method for testing the communication reliability of the tire pressure monitoring system, provided by the invention, is high in testing efficiency, simple in operation and high in automation degree, and can be applied to the standing test of earlier-stage communication reliability of a tire pressure monitoring system product, the test of the communication reliability of the development stage, the detection of the communication reliability of the production stage, and the detection of the communication reliability of the client verification stage.
Owner:FORYOU GENERAL ELECTRONICS
Phase object Z-scan-based pump-probe method
InactiveCN102645408ADetermine absorbencyDetermining lifeMaterial analysis by optical meansOptical axisHigh intensity
The invention discloses a phase object Z-scan-based pump-probe method, which includes the following steps: an incident laser beam is split into two beams, the beam with high intensity is pump light, the beam with low intensity is probe light, and the pump light is delayed and focused on a non-linear sample to be tested, so that the sample to be tested, which is in the ground state, generates non-linear absorption and non-linear refraction; the sample to be tested is located on the focal plane of a lens in a probe light path, a round diaphragm and a round baffle, the centers of which are superposed with the optical axis, are placed at a far-field position in the probe light path behind the sample to be tested, the emergent probe light is split into two beams by a spectroscope, one of the beams directly enters a first probe, and the other beam enters a second probe after passing through the diaphragm and the baffle. A measuring system which operates according to the method is highly sensitive and can simply process data, non-linear absorption and non-linear refraction can be measured simultaneously rather than separately, and the method has the advantages of accurate measurement results and the like.
Owner:SUZHOU MICRONANO LASER PHOTON TECH CO LTD
Multistage thermoelectric cooler parameter vacuum testing device
ActiveCN103257052AAvoid the problem of easy condensationComprehensive test parametersStructural/machines measurementThermoelectric coolingEngineering
The invention discloses a multistage thermoelectric cooler parameter vacuum testing device which comprises a vacuum cavity, a vacuum pump, a water-cooling head, a temperature control cooling water circulation device, a heating resistor module, a cold-end temperature measurement resistor, a hot-end temperature measurement resistor, a direct current power source, and a data processing and displaying module. A vacuum pumping valve and an air vent valve are arranged on the vacuum cavity. The vacuum cavity is sealed with the water-cooling head through a vacuum rubber ring and connecting screws. A hot end of a thermoelectric cooler achieves heat dissipation and temperature control through the water-cooling head and the temperature control cooling water circulation device. The data processing and displaying module is used for carrying out real-time control, data processing and result displaying on appliances in the device. Through adoption of the multistage thermoelectric cooler parameter vacuum testing device, the current-voltage response relation and the current-refrigerating capacity relation of the multistage thermoelectric cooler, the refrigerating efficiency of the multistage thermoelectric cooler under different heat dissipation conditions and other parameters can be obtained. The multistage thermoelectric cooler parameter vacuum testing device is simple in structure, convenient to operate, high in measuring accuracy, and capable of effectively preventing a cold end of the thermoelectric cooler from dewing in the testing process of large temperature difference.
Owner:SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
Device for measuring optical non-linearity of material by single-pulse flat-top light and measuring method thereof
InactiveCN102539391ARealize measurementSolve vulnerablePhase-affecting property measurementsTransmissivity measurementsTransmittanceOptical nonlinearity
The invention discloses a device for measuring optical non-linearity of a material by single-pulse flat-top light. A round small hole and a round baffle are arranged in a light path of a detection light after passing through a specimen, and the nonlinear transmittance of the open pore as well as the far-field round small hole and the round baffle combination is measured by the measuring method under the action of single-pulse, so as to determine the nonlinear absorption and nonlinear refraction coefficients of the material. When the measuring device works, the measuring system is simple in light path, the measuring sensitivity is extraordinary high, the data processing is simple, single pulse measuring is realized, the specimen is not needed to be moved, nonlinear absorption and nonlinear refraction can be simultaneously measured, and the measuring cost is greatly reduced.
Owner:SUZHOU MICRONANO LASER PHOTON TECH CO LTD
Cable detection board, cable detection method, and line sequence, impedance, insulation and aging detection methods
InactiveCN106885943AEasy to connect and plugReduce couplingTesting dielectric strengthResistance/reactance/impedenceComputer engineeringLight source
The invention discloses a cable detection board, a cable detection method, and line sequence, impedance, insulation and aging detection methods. The cable detection board comprises N first detection switches. The output end of each first detection switch is connected with the input end of a second detection switch through a to-be-detected cable. The input ends of the N first detection switches are connected with at least one first function selection switch. The output end of the N second detection switches are connected with at least one second function selection switch. The problem that the line sequence is difficult to detect in the prior art is solved. The cable detection board and the detection methods have the advantages of comprehensive test parameters, low cost, low requirement on light source, line color and terminal type, wide application scope, simple wiring, and easy operation.
Owner:CHANGSHA YUNYA ELECTRONICS TECH CO LTD
Multi-channel high-precision LCR test system
PendingCN114089040AShort switching timeComprehensive test parametersResistance/reactance/impedenceEngineeringMechanical engineering
The invention relates to the technical field of LCR testing, and discloses a multi-channel high-precision LCR testing system. Themulti-channel high-precision LCR testing system comprises a plurality of scanning cards which are connected with a product to be tested and have the same structure, and measuring cards which is arranged opposite to the scanning cards, the plurality of scanning cards are connected with the measuring card through a back connecting plate, the scanning cards are used for realizing channel switching, the measuring cards are used for realizing an LCR test, the back connecting plate is used for realizing signal transfer, the back connecting plate is connected with a main control board, and the main control board is used for realizing signal control on the measuring cards and the scanning cards. According to the system, synchronous measurement of a plurality of measuring plates is realized, the measuring plates can be randomly corresponding to one scanning plate or a plurality of scanning plates, and the application is flexible.
Owner:苏州茂鼎电子科技有限公司
Backend detecting method for diodes and audions
InactiveCN103760485AImprove accuracyComprehensive test parametersIndividual semiconductor device testingPower flowMagnification
The invention discloses a backend detecting method for diodes and audions. The method comprises the first window testing and the second window testing, wherein the first window testing comprises the potential risk testing, the no-risk testing and the key testing; the second window testing comprises the no-risk testing and the key testing; the key testing mainly comprises the testing of parameters including forward voltage, current magnification times, leak current, forward direct current and maximum circulation current. The method comprises the two testing steps, the accuracy of testing is improved, the number of testing parameters is large, the detection range is wide, and as the potential risk testing is arranged, the reverse breakdown, large saturation current, large current opening and large current gains of the diodes and the audions are tested, the normal rate of the diodes and the audions to work under the potential risk state is increased, the performance of the diodes and the audions is better after testing, and hidden defective diodes and audions are eliminated.
Owner:CHENGDU ADVANCED POWER SEMICON +1
Living body spontaneous activity quantitative detection device and method
InactiveCN103356175AAchieve positioningEasy to detectDiagnostic recording/measuringSensorsElectricityComputer module
The invention discloses a living body spontaneous activity quantitative detection device which comprises a box body structure with an upper layer and a lower layer, wherein the upper layer is a sensor layer which comprises infrared geminate transistors arranged in a 16*8 matrix, spacing between every two adjacent infrared geminate transistors is 3cm, infrared ray transmitting tubes and infrared ray receiving tubes of the infrared geminate transistors are arranged in parallel, a transparent plate is arranged above the infrared geminate transistors, the lower layer is a control plate layer which comprises a scanning circuit and a control circuit, the scanning circuit and the control circuit are electronically connected, the scanning circuit comprises 18 pieces of CD4051, the control circuit mainly comprises an ATMEGA16 processor chip, the infrared geminate transistors is connected with the scanning circuit through a transmission line, and the control circuit is connected with a display module outside the box body structure. The invention further discloses a detection method with the device used. According to the method, automatic detection of the whole process of the activity of a mouse can be achieved comprehensively and accurately with a simple method, accurate reflection and continuous detection of the process of the activity of the mouse are achieved, and accurate quantitative description of activity in two-dimensional space is achieved.
Owner:SHANDONG NORMAL UNIV
Handheld digital integrated circuit parameter tester
InactiveCN103576078AImprove stability and compatibilityEasy to operateElectronic circuit testingPower managementEngineering
The invention provides a handheld digital integrated circuit parameter tester and relates to an integrated circuit parameter tester. The handheld digital integrated circuit parameter tester comprises a power management module, a central control module, a chip test interface, a communication module and a man-machine interface module. The output end of the power management module is connected with the power input end of the central control module. The central control module comprises a single-chip microcomputer I and a single-chip microcomputer II, wherein the single-chip microcomputer I is connected with the chip test interface, the single-chip microcomputer II is directly connected with the communication module and the man-machine interface module through I / O pins, and the single-chip microcomputer I and the single-chip microcomputer II are connected with each other directly through an SPI bus. The communication module comprises a serial communication interface chip and a peripheral circuit of the serial communication interface chip. The output end of the communication module is connected with the input end of an upper computer. The handheld digital integrated circuit parameter tester has the advantages that functions are complete, running is stable, operation is simple, the size is small, and the cost is low; the handheld digital integrated circuit parameter tester can serve as an educational instrument or a detection instrument, thereby being suitable for being popularized to school laboratories or electronic amateurs.
Owner:LIUZHOU RAILWAY VOCATIONAL TECHN COLLEGE
Photocoupler testing device
InactiveCN109116137AThe test method is simple and fastComprehensive test parametersElectrical testingElectricityTest fixture
The invention discloses a photocoupler testing device, which comprises a power module, an MCU module, a communication module, a first testing module, a second testing module and a third testing module, wherein the power module is electrically connected with the MCU module, the communication module, the first testing module, the second testing module and the third testing module respectively; and the MCU module is electrically connected with the communication module, the first testing module, the second testing module and the third testing module respectively. The electrical appliance parameters of the photocoupler are measured respectively by the first testing module, the second testing module and the third testing module respectively, the device has a low price, the detected parameters are multiple, the product quality and the detection efficiency can be improved, the product fault rate is reduced, and the overall stability is improved.
Owner:WAHLAP TECH CO LTD
Receiver radio frequency link nonlinear effect multi-parameter test platform
ActiveCN113612553AComprehensive test parametersReceivers monitoringAdjacent channel power ratioTest platform
The invention discloses a receiver radio frequency link nonlinear effect multi-parameter test platform which comprises a plurality of test modules such as an intermodulation test subsystem, a power compression test subsystem, an amplitude-phase error test subsystem, a receiver link parameter test subsystem and a theoretical parameter calculation test subsystem. The testing and the displaying of a dual-frequency image, an input and output power response diagram under a fixed frequency point, a 1dB compression point diagram under different frequency points, a power compression three-dimensional diagram, an error vector amplitude, an amplitude-frequency characteristic diagram, a phase-frequency characteristic diagram, a nonlinear effect parameter, a third-order truncation point and an adjacent channel power ratio are realized; The test platform is a universal comprehensive test platform scheme aiming at the nonlinear effect of the radio frequency link of the receiver, and can be suitable for testing the nonlinear effect of various types and frequency bands of receivers between 150MHz and 40GHz.
Owner:SHANDONG UNIV
Integrated management method for linear motor suspension test bench detection
InactiveCN107515373AImprove continuityClear classificationDynamo-electric machine testingTest flowLinear motor
The invention discloses an integrated management method for linear motor suspension test bench detection, mainly to solve the technical problems that the existing rail transit linear motor detection fails to reach the standard and the detection and management technology is incomplete and the like. The key points of the technical scheme are that the method comprises test process management, test project classification management, test parameter classification management, and test result and quality evaluation management. The method is mainly used for integrated detection and management on a rail transit linear traction motor suspension simulation test bench.
Owner:湖南中通电气股份有限公司 +1
Experiental table device and experimental method for testing gap exciting force characteristic of front cover plate of centrifugal pump
ActiveCN108414211ASingle measurement dataTest data systemMachine part testingNuclear energy generationExperimental methodsEngineering
The invention provides an experimental table device for testing gap exciting force characteristic of a front cover plate of a centrifugal pump. The experimental table device is used for detecting thefront cover plate and comprises a shell, a spindle and a base, both the shell and the front cover plate sleeve the spindle, a gap is formed between the shell and the front cover plate, and a measuringloop is formed; the measuring loop is connected with a drainage tube, a workbench and a propelling block are slidably arranged at the top of the base and fixedly connected, a gasket is arranged at the top of the workbench, the shell is positioned at the top of the gasket, a threaded hole is formed in the propelling block and matched with a screw in use, and the screw is fixedly connected with a valve. Only the front cover plate and a spindle set part connected with the front cover plate need to be mounted and demounted, so that the experimental table device is simple and convenient to mount and demount, and no damage is caused to other parts in the process of mounting and demounting, so that experimental efficiency is improved greatly, experimental period is shortened, experimental accuracy is improved, and experimental errors caused by other factors are reduced.
Owner:ZHEJIANG SCI-TECH UNIV
Combined test method for testing strength and rheological properties of marine ultra-soft soil
InactiveCN110749724AReliable strength test resultsWide range of shear strain rate testingEarth material testingCombined testSoil science
The invention discloses a combined test method for testing strength and rheological properties of marine ultra-soft soil, and belongs to the technical field of offshore engineering. The method is based on the advantages of a full-flow penetrometer in the aspect of strength test and the advantages of a rheometer in the aspect of shear strain rate test, the method comprises the following steps of: respectively testing a marine ultra-soft soil sample by adopting two types of devices; and calibrating a strength result measured by the rheological test part by taking a strength value measured by thestrength test part under the reference shear strain rate as the standard strength, and correcting the strength curve measured by the rheological test part according to the calibration result, therebyobtaining the strength and rheological property parameters of the marine ultra-soft soil. The test method provided by the invention has the characteristics of the reliable strength test result (whichcan be as low as 0.001 kPa), the wide shear strain rate test range (which can exceed 100s-1 or is less than 0.001s-1), the rich test parameters (undrained shear strength, sensitivity, yield stress and viscosity) and the like, and technical reference is provided for the mechanical property test of the marine ultra-soft soil in offshore engineering.
Owner:DALIAN UNIV OF TECH +1
A single-pulse method for measuring nonlinear refraction of materials
ActiveCN101482502BNo need to moveEasy to measurePhase-affecting property measurementsRefractive indexTransmittance
The invention discloses a method for measuring the nonlinear refraction of a material with a single pulse. A phase object is added in the detection optical path. Under the action of a single pulse, the nonlinear transmittance of a small hole in the far field can be measured to determine the nonlinear refraction of the material. Linear index of refraction. The measurement system working according to the method of the invention has the advantages of simple optical path, simple data processing, single pulse measurement, no need to move the sample, can measure the magnitude and sign of nonlinear refraction at the same time, accurate measurement results, and greatly reduce the measurement cost.
Owner:SUZHOU MICRONANO LASER PHOTON TECH CO LTD
A Performance Test Bench for Phosphate Ester Oil Hydraulic Oil Tank
ActiveCN111237291BHigh degree of automationComprehensive test parametersFluid-pressure actuator testingServometer circuitsPhosphoric Acid EstersTemperature control
The invention discloses a phosphate ester oil hydraulic oil tank performance test bench, which comprises a high-pressure system, a low-pressure system, an oil temperature control and self-cleaning system, a measurement and control system and a platform; the high-pressure system is used to adjust the pressure and flow of a booster chamber; It is used to adjust the pressure and flow of the oil storage chamber; the oil temperature control and self-cleaning system is used to realize the hydraulic oil temperature control of the hydraulic system and the self-cleaning ability of the oil; the measurement and control system is mainly used to realize the parameter adjustment of the hydraulic system, data Acquisition and processing and power distribution protection; the platform is used to install the test piece. The invention can complete the test and measurement of performance parameters such as the flexibility and running-in of the pressurized oil tank, functional inspection, oil storage chamber pressure and pressure resistance, flow impact and the like stipulated in the standard.
Owner:NANJING CHENGUANG GRP
Handheld digital integrated circuit parameter tester
InactiveCN103576078BComprehensive test parametersComplete test resultsElectronic circuit testingMicrocontrollerMan machine
A hand-held digital integrated circuit parameter tester, relating to an integrated circuit parameter tester, comprising a power management module, a central control module, a chip test interface, a communication module, and a man-machine interface module, the output terminal of the power management module is connected to the central control module The central control module includes single-chip microcomputer Ⅰ and single-chip microcomputer Ⅱ. The single-chip microcomputer Ⅰ is connected to the chip test interface. The single-chip microcomputer Ⅱ is directly connected to the communication module and the man-machine interface module through I / O pins. The communication module is directly connected through the SPI bus; the communication module includes a serial communication interface chip and its peripheral circuit, and the output terminal of the communication module is connected with the input terminal of the upper computer. The invention has the advantages of perfect function, stable work, simple operation, small size, low cost, etc., can be used as a teaching instrument or a testing instrument, and is suitable for popularization in school laboratories or amateur electronic enthusiasts.
Owner:LIUZHOU RAILWAY VOCATIONAL TECHN COLLEGE
Test bed for multi-stage servo valve
PendingCN114838036AComprehensive test parametersImprove accuracyFluid-pressure actuator testingMachine valve testingElectrohydraulic servo valveProcess engineering
The embodiment of the invention discloses a test bench for a multi-stage servo valve, and the test bench comprises a workbench which is used for arranging a to-be-tested servo valve; the test oil pressure oil supply device is arranged on the workbench and used for supplying test oil to the servo valve to be tested; the pilot oil supply device is arranged on the workbench and used for supplying pilot oil to the servo valve to be tested; the test oil pressure oil supply device and the pilot oil supply device are communicated with the oil tank; and the temperature control cleaning device is communicated with the oil tank. The test oil pressure oil supply device and the pilot oil supply device of the test bench are independently arranged, and the test oil pressure oil supply device and the pilot oil supply device can control respective hydraulic oil supply pressure and flow based on actual requirements, so that the test parameters of the test bench for the multi-stage servo valve are complete, and the test result is high in accuracy. The device can be used for detecting the no-load flow characteristics, the load flow characteristics and the internal leakage characteristics of three-stage and two-stage electro-hydraulic servo valves, and a practical and efficient tool is provided for detecting the static performance of the multi-stage electro-hydraulic servo valve.
Owner:SHOUGANG JINGTANG IRON & STEEL CO LTD
A self-test system and method for spaceborne measurement and control transponder based on lower computer
ActiveCN107612610BReduce manual interventionImprove test efficiencyRadio transmissionEngineeringGround testing
Owner:AEROSPACE DONGFANGHONG SATELLITE
Gravity casting simulation test bench
ActiveCN107478800BEasy to adjustCompact structureCasting plantsMolten metal pouring equipmentsLiquid metalSimulation testing
Owner:ANHUI UNIV OF SCI & TECH
System for tesing optical enviroment by image processing technique
InactiveCN1161591CQuality improvementHigh precisionPhotometryMaterial analysis by optical meansImaging processingObject point
Owner:TIANJIN UNIV
A method for time-resolved pump detection of ultrashort single pulses using stepped windows
The invention discloses a method for realizing ultrashort single-pulse time-resolved pump detection by using a stepped window. The laser output from a laser is divided into pump light and probe light, and the pump light is focused on a nonlinear sample through a lens to make it Non-linearity is generated; the probe light is transmitted through the stepped window to detect the change of the nonlinear sample induced by the pump light, and the image is received by the CCD; in the case of probe light with different time delays, the intensity of the probe light emitted from the sample The change reflects the distribution of the number of particles in the sample at different times, thereby determining the absorption cross section and lifetime of each energy level; the measurement system working according to the method of the present invention is very convenient to measure, without sample movement, and only needs one laser pulse to obtain The time-resolved pump-probe curve is very simple compared with the traditional pump-probe optical path; there is no need for a high-precision mobile platform in the traditional optical path to realize the time delay, and only one delay step window is needed to realize the time delay.
Owner:SUZHOU UNIV
Quantitative detection device and detection method for spontaneous activity of living body
InactiveCN103356175BAchieve positioningEasy to detectDiagnostic recording/measuringSensorsElectricityControl layer
The invention discloses a living body spontaneous activity quantitative detection device which comprises a box body structure with an upper layer and a lower layer, wherein the upper layer is a sensor layer which comprises infrared geminate transistors arranged in a 16*8 matrix, spacing between every two adjacent infrared geminate transistors is 3cm, infrared ray transmitting tubes and infrared ray receiving tubes of the infrared geminate transistors are arranged in parallel, a transparent plate is arranged above the infrared geminate transistors, the lower layer is a control plate layer which comprises a scanning circuit and a control circuit, the scanning circuit and the control circuit are electronically connected, the scanning circuit comprises 18 pieces of CD4051, the control circuit mainly comprises an ATMEGA16 processor chip, the infrared geminate transistors is connected with the scanning circuit through a transmission line, and the control circuit is connected with a display module outside the box body structure. The invention further discloses a detection method with the device used. According to the method, automatic detection of the whole process of the activity of a mouse can be achieved comprehensively and accurately with a simple method, accurate reflection and continuous detection of the process of the activity of the mouse are achieved, and accurate quantitative description of activity in two-dimensional space is achieved.
Owner:SHANDONG NORMAL UNIV
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