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40results about How to "Guaranteed test accuracy" patented technology
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Clamping device of connecting rod fatigue test device
ActiveCN224102759UEnsure connection tightnessGuaranteed test accuracyMachine part testingWork holdersClassical mechanicsMechanical engineering
Owner:ZHEJIANG XINCHAI
A touchless chip detection system
ActiveCN116577631BFast switching speedGuaranteed test accuracyElectronic circuit testingCapacitance measurementsComputer hardwareCapacitance
This invention discloses a contactless chip testing system. The platform includes a PC, a data parsing / forwarding module, a source signal excitation module, a gating array, and a chip slot under test. The platform allows for simultaneous multi-selection via a PC's visual interface, enabling automated integrated testing of resistance, capacitance, package integrity, voltage, and overall power consumption between any chip pins. Compared to traditional mechanical probe-based contact testing systems, this invention is more compact. Furthermore, it employs an automatically gating physical path switching method, resulting in a higher switching rate and more efficient package testing.
Owner:EAST CHINA NORMAL UNIV
A method for testing cloud game audio quality
ActiveCN114464211BFast testImprove test efficiencySpeech analysisSelective content distributionTest efficiencyPESQ
This invention discloses a method for testing the audio quality of cloud games, comprising the following steps: An audio testing terminal acquires test audio played on a test client and a test server in real time, forming a first test audio and a second test audio, and acquires the corresponding source audio in real time; the audio testing terminal acquires the audio file size and track duration of the first test audio and the source audio within the same time period, respectively, and calculates the ratio of the PESQ value, similarity value, and audio file size of the first test audio to the source audio; the ratio of the audio file size, PESQ value, and similarity value of the first test audio to the source audio are compared with the ratio of the audio file size, PESQ value, and similarity value of the playback audio to the source audio when the source audio is played in high-quality, standard-quality, and smooth-quality playback software. This invention enables automatic testing of cloud game audio quality, with fast testing speed, effectively improving testing efficiency and reducing testing costs.
Owner:SHENZHEN RENDERBUS TECH
Electromagnetic function test system
ActiveCN224341571UEasy height adjustmentGuaranteed test accuracyElectrical testingElectromagentic field characteristicsMicrowaveTest analysis
The utility model discloses an electromagnetic function test system, include: both side's stand, the stand middle part is installed with the feed source installation platform through the lifting structure, two groups of feed source assembly are installed above the feed source installation platform, the feed source installation platform bottom has the wave absorbing background structure, the wave absorbing background structure middle part places the sample to be measured, the feed source installation platform realizes horizontal direction transverse movement through the translation structure, has the rotary structure in the feed source assembly, thereby realizes the measurement process realizes up and down movement, left and right movement and angle rotation conversion, solves the technical problem of the measurement error of the test system in the prior art is serious, cannot simultaneously compatible P, L wave band material test and high frequency microwave test and cannot achieve the comprehensive electromagnetic function material test analysis of multiple projects.
Owner:CHENGDU SANHONG HI-TECH CO LTD
Cigarette flameout detector
ActiveCN224152436UGuaranteed test accuracyChemical analysis using combustionUsing optical meansElectric machineVisual inspection
A cigarette flameout detector comprises a detection box, an image shooting assembly arranged in a box body and a cigarette clamping and rotating mechanism arranged on a bottom plate of the box body, and the cigarette clamping and rotating mechanism comprises a cigarette clamping device, a power unit used for driving the cigarette clamping device to rotate and a clamping device fixing base. The power unit is composed of a linear motor, a screw, a sliding nut and a rack, the rack and the sliding nut are fixed together and slide synchronously, the rack is installed on the linear guide rail, and the cigarette holders are correspondingly arranged on the two sides of the rack. Each cigarette holder is supported on the fixing seat through a bearing, the tail end of each holder is connected with a gear matched with the rack, and a smoke exhaust fan is arranged on the top of the box body. The visual detection camera can detect a combustion line in real time and automatically judge whether flameout occurs or not, when flameout occurs, the cigarette holder is controlled to rotate, so that the cigarette rotates at a constant speed, and the visual camera automatically searches the shortest position between the combustion line and the filter tip end in the cigarette rotating process and measures the shortest position.
Owner:ZHENGZHOU GUARDIAN ELECTROMECHANICAL TECH CO LTD +1
Semiconductor test sorting machine with AGV (Automatic Guided Vehicle) automatic feeding and discharging functions
ActiveCN224222064Uhigh degree of automationFast and accurate loading and unloadingElectric/hybrid propulsionSortingMechanical engineeringSemiconductor
The utility model provides an AGV automatic feeding and discharging semiconductor test sorting machine, which belongs to the technical field of semiconductor production and comprises a test device, the test device comprises a shell, a host fixedly connected inside the shell, a door body hinged to the middle position of the shell and a screen fixedly connected to the side wall of the shell, and the screen is matched with the host for use; the feeding and discharging device comprises a supporting plate fixedly connected to the interior of the shell, a sliding rail fixedly connected to the side wall of the supporting plate, a sliding part slidably connected to the middle of the sliding rail, a carrier fixedly connected to the upper end of the sliding part and a material disc inserted into the side wall of the middle of the carrier. The beneficial effects of the utility model are that through the cooperative use of the testing device and the loading and unloading device, automatic loading and unloading are realized by the AGV trolley, the automation degree of semiconductor testing and sorting is improved, all parts work cooperatively, loading and unloading and position adjustment of material trays can be completed rapidly and accurately, and the testing period is shortened.
Owner:SUZHOU QIANMING SEMICON EQUIP CO LTD
Novel optical fiber macrobend testing device
ActiveCN224095368UGuaranteed test efficiencyGuaranteed test accuracyOptical apparatus testingFiberEngineering
The utility model relates to the technical field of optical fiber macro-bending testing, and discloses a novel optical fiber macro-bending testing device which comprises a supporting plate, a sliding plate block and a fixed plate block, the U-shaped wheel is rotationally connected to the upper surfaces of the sliding plate block and the fixed plate block; and the fixed clamp assembly is arranged on the upper surfaces of the sliding plate and the fixed plate, and the surface of the fixed plate is connected with a limiting sliding block. According to the novel optical fiber macrobend testing device, one end of a tested optical fiber is fixed on the right side fixing clamp assembly, the remaining part of the optical fiber is wound around the U-shaped wheel close to the fixing clamp assembly, then the optical fiber is pulled to the U-shaped wheel at the topmost end in the middle to be wound around, and the optical fiber is pulled to the U-shaped wheel close to the left side fixing clamp assembly all the time; finally, the optical fiber penetrates through the fixing clamp assemblies to be fixed, the sliding plate block is pushed, the remaining optical fiber is slightly loosened along with pushing of the sliding plate block to be attached to the limiting sliding block, and the optical fiber is fixed to the fixing clamp assembly on the left side.
Owner:SICHUAN TONGGUANG CABLE CO LTD +3
Strength testing device for lightweight composite flange processing
ActiveCN224231419Uavoid pinchingavoid deformationStrength propertiesClassical mechanicsElectric machinery
The utility model relates to the technical field of flange processing, and discloses a strength testing device for processing a lightweight composite flange, which comprises a workbench, and the surface of the workbench is provided with a stabilizing assembly and a protective assembly; the linkage rod is used for driving the sliding rod to move synchronously; the sliding rod is used for driving the clamping block to move synchronously; according to the strength testing device for lightweight composite flange machining, through the arrangement of the protection assembly, when the clamping plate clamps a flange, the motor continuously works, the clamping plate gets close to the stabilizing plate, at the moment, the linkage rod turns over, the sliding rod and the clamping block are driven to synchronously move downwards, the clamping block is driven to move downwards, and the clamping block is driven to move downwards; the clamping block is pushed by the third spring to be clamped into the clamping groove, at the moment, the plane of the clamping block abuts against the inner wall of the clamping groove, the circular plate is limited, the clamping plate is prevented from excessively clamping the flange, deformation caused by too large clamping force due to the fact that the motor is not stopped in time is avoided, and testing accuracy is ensured.
Owner:ZHUHAI GAODA TRANSMISSION EQUIP CO LTD
Temperature control method, device and equipment for artificial intelligence chip test, storage medium and program product
PendingCN121957205AActively adapt to temperature needsGuaranteed test accuracyTemperatue controlEnergy efficient computingTemperature controlAlgorithm
The invention relates to a temperature control method and device for an artificial intelligence chip test, equipment, a storage medium and a program product, and relates to the technical field of artificial intelligence chips. According to the invention, the accuracy of artificial intelligence chip testing can be effectively guaranteed. The method comprises the following steps: acquiring a current voltage and a current frequency for a current test of the artificial intelligence chip, and inputting the current voltage and the current frequency into a first prediction model to output current predicted power consumption and a current predicted load rate of the artificial intelligence chip by the first prediction model, and inputting the current voltage, the current frequency, the current predicted power consumption, the current predicted load rate, the current initial temperature of the temperature control module and the current test duration used for the current test of the artificial intelligence chip into a second prediction model, so that the second prediction model outputs the current predicted temperature of the artificial intelligence chip. And sending a temperature adjustment instruction to the temperature control module according to the current predicted temperature, the test demand temperature for the current test of the artificial intelligence chip and the current initial temperature.
Owner:SHANGHAI BIREN TECH CO LTD
A device for detecting the sound insulation performance of a vehicle body
This utility model provides a vehicle body sound insulation performance testing device, including two mounting brackets for respectively mounting on both sides of a vehicle. Each mounting bracket includes a vertical support frame and a horizontal mounting component. The horizontal mounting component is detachably connected to the upper end of the vertical support frame. Four equally spaced tube clamps are connected to the horizontal mounting component, and each of the four tube clamps holds a microphone, the microphone being horizontally adjustable within the tube clamps. The vehicle body sound insulation performance testing device disclosed in this utility model has a robust structure, enables accurate microphone positioning, and allows for microphone position adjustment, ensuring testing accuracy and improving testing efficiency.
Owner:NINGBO TUOPU GROUP CO LTD
Phased-array antenna beam forming test method in darkroom-free environment
PendingCN121984609Aincrease flexibilityImprove convenienceTransmitters monitoringSpatial transmit diversityAntenna impedanceField tests
The invention discloses a phased-array antenna beam forming test method in a darkroom-free environment, and relates to the technical field of satellite communication terminal complete machine testing, comprising the steps of initializing test system configuration, setting test parameters, initializing an antenna state, establishing a test environment, and connecting a test antenna with a channel simulator; cross coupling of non-corresponding channels is isolated and reduced through an algorithm, a signal transmission link between a test antenna and a tested antenna is established through a wireless channel by adopting a virtual wire connection mode, non-contact test is realized, beam forming test is performed, a mobile station moves to a preset test area, impedance of the test antenna is adjusted by adopting an electronic tuning mode, and the antenna is tested. The beam former realizes independent control of an uplink and a downlink, analyzes a test result and generates a report, does not need to depend on fixed test facilities such as a microwave anechoic chamber and a calibration tower, can directly test in an actual working scene, and is particularly suitable for field test of mobile equipment such as a large vehicle-mounted phased array system.
Owner:SHANGHAI INTELLIGENT & CONNECTED VEHICLE R & D CENTER CO LTD
Fragrance retention test box for detecting fragrance retention effect of essence
ActiveCN224176497UGuaranteed stabilityImprove cleanlinessMaterial analysisStructural engineeringTest chamber
The utility model relates to a fragrance retention test box for detecting the fragrance retention effect of essence, and relates to the field of fragrance retention test boxes. The device comprises a test box frame, an upper sealing piece and a lower sealing piece, the test box frame comprises a glass frame cover and splicing insertion frames, the splicing insertion frames are fixedly communicated with the upper end and the lower end of the glass frame cover, a sampling screw ring is horizontally arranged on the vertical end face of the outer wall of the glass frame cover, and one end of the sampling screw ring penetrates through the outer wall of the fixed glass frame cover; a sampling pipe barrel is horizontally inserted into the sampling screw ring, a sampling opening is formed in one end of the outer wall of the sampling pipe barrel in a penetrating mode, an external thread is arranged at the other end of the outer wall of the sampling pipe barrel and connected with the sampling screw ring in a threaded fit mode, the upper sealing part is inserted and assembled to the top of the glass frame cover, and the lower sealing part is inserted and assembled to the bottom of the glass frame cover. According to the invention, air in the test box frame is ensured not to be in contact with an external environment space during inspection, and the air cleanliness in the test box frame and the fragrance retention test precision in a closed space are ensured.
Owner:GUANGZHOU HE YUN FLAVOR & FRAGRANCE CO LTD
Method and tool for testing motion position and anti-pinch function of vehicle-mounted mobile screen
The application relates to a motion position and anti-pinch function test method and test tool for a vehicle-mounted mobile screen, the test tool comprising a tool base plate, an adjusting support fixedly connected to the tool base plate, a base assembly fixedly connected to the tool base plate, a position sensor assembly mounted on the adjusting support and a track tool plate, and an adjustable base assembly is used for fixing the vehicle-mounted mobile screen, wherein the sensor assembly comprises a start position sensor and an end position sensor which are respectively mounted on the adjusting support, the track tool plate has a first end corresponding to the position of the start position sensor, a second end corresponding to the position of the end position sensor, a track line between the first end and the second end, and an angle scale area and a percentage position scale area respectively located on both sides of the track line, and the degree line of the angle scale area intersects the degree line of the percentage position scale area at the track line; the motion position and anti-pinch function test method can realize the test of the global anti-pinch function of the vehicle-mounted mobile screen.
Owner:NINGBO PREH JOYSON AUTOMOTIVE ELECTRONICS
Internal heating test method, system and equipment of memory chip and storage medium
ActiveCN121995199AHigh precisionmaintain integrityElectronic circuit testingRadiation thermographyComputational scienceData set
The invention provides an internal heating test method, system and device for a memory chip and a storage medium, and relates to the technical field of semiconductors, and the method comprises the steps: applying an electrical excitation signal to each memory bank of a target memory chip one by one, so as to enable each memory bank to continuously perform characteristic heating in sequence; controlling the temperature observation equipment to sequentially collect the multi-view infrared thermal image set of each memory bank, and recording the collected information; performing image preprocessing and data extraction on the multi-view infrared thermal image set to obtain a temperature data set; performing data association analysis according to the temperature data set and the acquired information to obtain a temperature coordinate association data set; and performing three-dimensional curved surface fitting according to the temperature coordinate associated data set to obtain a temperature distribution model of the target memory chip. The working state of each memory bank is accurately controlled, the accuracy of heat source positioning is remarkably improved, the integrity of a chip structure is effectively maintained while the test accuracy is ensured, and the test efficiency is remarkably improved.
Owner:KINGTIGER TESTING TECH (SZ) LTD
Lightweight relay protection tester
The utility model belongs to the relay protection technical field, concretely relates to a light -duty relay protection tester, 220V power socket and 220V power switch electric connection are used for access and control power supply, 220V power switch and AC voltage regulator electric connection, AC voltage regulator and control switch electric connection, AC voltage regulator passes through mutual inductor respectively 250V voltage output end, 0.01A 100A current output end and current voltage common output end electric connection, 0.01A 100A current output end and mutual inductor between electric connection have reclosing current output end, 250V voltage output end and current voltage common output end between electric connection have AC voltmeter, current voltage common output end electric connection has alternating -current ammeter. The utility model not only has reduced equipment size significantly, has promoted portability, still has passed accurate electric meter measurement and flexible switch -over, has simplified test wiring process, has reduced operation complexity, has guaranteed test accuracy simultaneously.
Owner:JICHENG CONSTR ENG TESTING CO LTD OF YANGQUAN COAL IND GRP
Wafer-level device testing device
PendingCN121995110Aimplement testimprove performanceElectronic circuit testingResistance/reactance/impedenceComputer hardwareElectrical connection
The invention provides a wafer level device testing device. The device comprises a needle card which is used for accessing a tested device; the power supply is used for providing electric signals; the power supply protection module is electrically connected between the power supply and the pin card and is used for providing a drain electrode driving signal for the tested device based on the electric signal and stopping providing the drain electrode driving signal for the tested device when the tested device is broken down or short-circuited; the driving protection module is electrically connected between the power supply and the pin card and is used for providing a gate driving signal for the tested device based on the electric signal; the load module is electrically connected between the power supply protection module and the pin card and is used for accessing a load device; the current acquisition module is electrically connected between the needle card and the ground and is used for acquiring drain-source current; the clamping module is electrically connected with the needle card and is used for extracting a clamping drain-source voltage from the drain electrode driving signal; and the oscilloscope is electrically connected with the current acquisition module and the clamping module and is used for measuring the dynamic on-resistance through the drain-source current and the clamping drain-source voltage.
Owner:BOE HUACAN OPTOELECTRONICS (GUANGDONG) CO LTD
An optical receiving end bandwidth test method, system and related device
The application discloses an optical receiving end bandwidth test method, system and related equipment, which first performs coarse scanning by a first sweep frequency step and divides the amplitude-frequency response area, then determines a smaller second sweep frequency step according to the transition core area attenuation slope, adopts differential sampling in different areas, effectively reduces frequency point redundancy, shortens test time consumption, accurately captures the amplitude-frequency rapid attenuation characteristics, balances test efficiency and accuracy, and adapts to production line batch test requirements. By combining real-time signal-to-noise ratio adjustment sampling time and Fourier transform average number, the influence of various interference factors can be inhibited; by peak detection, roll-off characteristic determination, matching of a suitable low-pass model for global fitting, random sampling errors can be eliminated, the standard amplitude-frequency response curve can be fitted to the actual characteristics, and the stability and repeatability of bandwidth determination are improved. The method realizes accurate, efficient and stable test of the optical receiving end bandwidth through the organic combination of adaptive non-uniform sweep frequency and model fitting, and improves the test performance.
Owner:HONG KONG UNIV OF SCI & TECH (GUANGZHOU)
Balancing device for making resinoid grinding wheel segments
ActiveCN224334198Uheight adjustablesmall footprintGrinding machine componentsGear driveGrinding wheel
This utility model relates to the technical field of resin grinding wheel preparation equipment, and discloses a balancing device for manufacturing resin grinding wheel discs, including a base and a level. A support plate is fixedly connected to the top of the base, and a high-precision threaded rod is rotatably connected to the middle of the base. A sleeve is threadedly connected to the outer circumference of the high-precision threaded rod, and a slide rail is fixedly connected to the top of the sleeve. A drive assembly is installed in the middle of the base, and a slide rod is slidably connected to the middle of the support plate. The slide rod is connected to the slide rail, and the drive assembly includes a worm gear. In this utility model, rotating the worm gear drives the worm wheel to rotate, which in turn drives the high-precision threaded rod to rotate. The sleeve can move up and down around the outer circumference of the high-precision threaded rod, thereby pushing the slide rail. This allows for adjustment of the slide rail height when testing larger resin grinding wheel discs, and the device can be folded up when not in use to reduce space occupation.
Owner:JIANGXI UNICO ABRASIVE TECH
Experimental device and method for evaluating water blocking inhibition and release agent of water-containing gas reservoir
PendingCN121994997Areliable evaluation methodThe experimental results are intuitivePermeability/surface area analysisFluid phaseEnvironmental engineering
The invention discloses a water-containing gas reservoir water lock inhibition and release agent evaluation experiment device and method.The device comprises at least three intermediate containers, sand filling pipes and a plurality of liquid level sensors, corresponding medium outflow pipes are arranged at the bottoms of the intermediate containers, and the outlet ends of the multiple medium outflow pipes are connected with a medium header pipe; water, gas and a water lock inhibiting and relieving agent are respectively arranged in the intermediate container; a porous medium is arranged in the sand-filled pipe, the inlet end of the sand-filled pipe is connected with the medium header pipe, the outlet end of the sand-filled pipe is connected with the liquid-phase separator through a pipeline, the upper end of the liquid-phase separator is provided with a gas flow pipeline, and the gas flow pipeline is provided with a gas-phase flowmeter; the liquid level sensors are used for detecting the liquid level of the middle container containing water, the liquid level of the middle container containing the water locking restraining and relieving agent and the liquid phase separator respectively. The method has the beneficial effects that the dynamic water saturation of a seepage channel with formation water invading in the production process of the water-containing gas reservoir is obtained, and then the dynamic water locking inhibition and release agent effect is obtained.
Owner:PETROCHINA CO LTD
Connecting device for ultimate tensile test of concrete core sample
ActiveCN224202889USimple structurereduce sizeMaterial strength using tensile/compressive forcesStructural engineeringConical cavity
The utility model discloses a concrete core sample ultimate tensile test connecting device which comprises two clamping devices used for clamping the two ends of a tested core sample, each clamping device comprises a shell with a conical cavity and an arc-shaped clamping piece, a cross beam is installed at the large opening end of each shell, the center of each cross beam is located on the central axis of the corresponding conical cavity, and the arc-shaped clamping pieces are connected with the clamping devices. A connecting column matched with tensile test equipment is mounted at the central position of the cross beam; the arc-shaped clamping pieces are symmetrically arranged on the inner side of the conical cavity of the shell. The device is simple in structure, small in size, easy to install and flexible to adjust, the whole structure adopts an assembly type, lightweight and standardized design, test core samples of the same type can be commonly used, carrying is convenient, and assembling is easy and convenient.
Owner:SINOHYDRO BUREAU 8 CO LTD
Durability test tool for rotary joint
ActiveCN224122156UThe overall structure is simple and reliableGuaranteed test accuracyMachine part testingElectric machineControl engineering
The utility model discloses a rotary joint durability test tool, which comprises a rotary motor, a counter, a fixed plate and a limiting plate arranged on the fixed plate, an output shaft of the rotary motor is fixed with an inner shaft of a rotary joint, the fixed plate is provided with a through hole for the output shaft to pass through, and the limiting plate circumferentially limits an outer adapter of the rotary joint; a pin is installed on the peripheral face of an output shaft of the rotating motor, a probe of the counter is located on one side of the output shaft, and when the pin is right opposite to the probe, the counter counts once. According to the utility model, the bolt is arranged on the output shaft of the rotating motor, the counting effect is realized through mutual induction of the bolt and the probe of the counter, the structure is simple and reliable, the external adapter does not need to be rotated, the actual working condition can be simulated for testing, and the testing precision is ensured.
Owner:JIANGSU YINGTERIER WINDING EQUIPMENT CO LTD
Tire mold pressure testing device
ActiveCN224081304Ureduce frictional resistanceClever lubrication designMaterial strength using tensile/compressive forcesConveyor partsLubricationFrictional resistance
The utility model discloses a tire mold pressure testing device, which particularly relates to the technical field of mold pressure testing and comprises a supporting platform, a conveying belt is mounted on one side of the supporting platform, a fixing plate is fixedly arranged on one side of the supporting platform, a fixing frame is fixedly arranged at the top of the supporting platform, and a guide mechanism is arranged in the fixing frame. The guiding mechanism comprises a plurality of guiding grooves formed in the fixing frame, guiding boxes are slidably arranged in the guiding grooves, through holes are formed in the surfaces of the guiding boxes, guiding rods are slidably arranged in the through holes, fixing cylinders are fixedly arranged in the guiding boxes, a plurality of holes are formed in the surfaces of the fixing cylinders, and a sponge layer is fixedly arranged on one side of each fixing cylinder. According to the utility model, the vertical movement of the pressure applying part can be ensured, the pressure applied to the tire mold is more stable and accurate, the lubrication of the guide rod can be realized, the frictional resistance is reduced, the smooth operation of the device is ensured, and the service life is prolonged.
Owner:WUXI REFISELL MASCH TECH CO LTD
Laser projector illuminance test apparatus
ActiveCN224317272Ureduce workloadImprove test efficiencyPhotometry using electric radiation detectorsTesting optical propertiesIlluminanceLaser projector
The utility model relates to a kind of laser projector illumination testing equipment, belong to illumination testing equipment technical field, to solve the problem of low test efficiency, poor precision and large personnel workload when laser projector is tested by manual mode in prior art.This application includes rack, mounting seat and luxmeter, and the rack is fixedly installed with slide rail, two stations are equipped on the slide rail, to constitute feeding station and test station;Mounting seat is slidably installed on slide rail, and the luxmeter is installed on the rack at test station;Fixed part, power connection part and heat dissipation part are equipped on mounting seat;Laser projector is fixedly installed on mounting seat by fixed part, power connection part is plug structure, and it corresponds with laser projector power connection end, heat dissipation part is installed on mounting seat, and when laser projector is installed on mounting seat, heat dissipation part is attached to laser projector.This application does not need artificial movement product, and test efficiency is high, personnel workload is less, and test precision is high.
Owner:SUZHOU AUTOLINE TECH CO LTD
Peak pulse current test method of battery, electronic equipment and storage medium
PendingCN121955490AImplement Adaptive TestingGuaranteed test accuracyElectrical testingAc/pulses peak value measurementsElectrical batteryElectric devices
The invention discloses a peak pulse current testing method of a battery, electronic equipment and a storage medium. The peak pulse current testing method comprises the following steps: acquiring charging or discharging pulse time and initial testing current of a to-be-tested battery, and at least one target testing temperature and at least one target residual electric quantity; and under the condition that the to-be-tested battery is at the target test temperature and the target residual electric quantity, based on the initial test current, current tests of multiple pulse times are carried out on the to-be-tested battery, and peak pulse current of the to-be-tested battery at the target test temperature and the target residual electric quantity is obtained.
Owner:HUIZHOU EVE POWER CO LTD
A multi-channel ceramic capacitor withstand voltage testing device and method
ActiveCN115963299BImprove test efficiencyMeet production needsCapacitor testingMeasurement instrument housingTest efficiencyClassical mechanics
This invention relates to the field of ceramic capacitors, and in particular to a multi-channel ceramic capacitor withstand voltage testing device and method. The device includes a base, a test holder, multiple movable test probes, a moving mechanism, and multiple fixed test probes. The base is a hollow structure with an internal mounting space. The test holder is mounted on a top plate of the base and has multiple test slots. The movable test probes are movable towards the test holder and mounted on the top plate of the base. The moving mechanism is located within the mounting space of the base and is connected to and drives the movable test probes. The fixed test probes are fixedly mounted on the top plate of the base, with the movable and fixed test probes respectively positioned on opposite sides of the test holder. This invention, through the cooperation of the test holder, movable test probes, and fixed test probes, allows for simultaneous withstand voltage testing of multiple ceramic capacitors, improving testing efficiency.
Owner:FUJIAN TORCH ELECTRON TECH CO LTD
Method and apparatus for testing wireless terminal transmit antenna switching performance
ActiveCN116647292Btest accurateGuaranteed test accuracyTransmitters monitoringSpatial transmit diversityTelecommunicationsCommunication device
This invention proposes a method and apparatus for testing the switching performance of wireless terminal transmit antennas, relating to the field of communication equipment performance testing technology. The method includes: disabling the transmit antenna switching function; measuring the EIRP pattern of the main antenna and the EIRP pattern of the diversity antenna respectively; comparing and randomly swapping the EIRP values of the two antennas according to a preset switching threshold and switching probability to obtain a combined EIRP pattern; and further calculating the TRP value (TRP) of the combined EIRP pattern. Comb For each preset swap threshold and swap probability, repeat the previous step to obtain a certain number of TRPs. Comb Sample; determine the TRP based on preset discrimination indicators. Comb Whether the sample meets the requirements of the discrimination index is used to obtain the test results of the transmitting antenna switching performance of the wireless terminal under test.
Owner:CHINA ACADEMY OF INFORMATION & COMM +1
High-purity hydrogen preparation and hydrogen purity evaluation integrated device
PendingCN121944922AReasonable structural designGuaranteed test accuracyComponent separationHydrogen separation using solid contactHydrogen purityPtru catalyst
The invention discloses a high-purity hydrogen preparation and hydrogen purity evaluation integrated device which comprises a supporting frame, a first universal wheel is connected to the left side of the bottom of the supporting frame, a second universal wheel is connected to the right side of the bottom of the supporting frame, the supporting frame is made of stainless steel, and two cross beam structures are arranged on the upper portion of the supporting frame; a first high-temperature furnace is fixedly connected to the left side of the upper portion of the supporting frame, a palladium membrane tube purifier is connected to the top of the first high-temperature furnace, a gasification tube is connected to the outer wall of the palladium membrane tube purifier, and a second high-temperature furnace is connected to the right side of the upper portion of the supporting frame; the device is reasonable in structural design, high-purity hydrogen capable of being used by a fuel stack can be obtained only through one-time purification, a hydrogen purity test and a stack power generation performance test can be carried out at the same time, and online reduction activation of a catalyst is facilitated.
Owner:SHENZHEN RONGMEI TECH CO LTD
Box culvert jacking side wall resistance simulation test bed
The utility model relates to box culvert jacking technical field discloses a box culvert jacking lateral wall resistance simulation test board, including test board body, the upper surface of test board body all is fixedly connected with two groups of baffle, the inner wall sliding of baffle is connected with the guide column, the right side outer wall of guide column is fixedly connected with the test board, the outer wall of baffle is fixedly connected with electric push rod no.
Owner:ZHENGZHOU UNIV
Switching power supply insulation and voltage resistance testing device
ActiveCN224216750Uelectric shock preventionavoid lostTesting dielectric strengthPower supply testingElectrical connectionControl theory
The utility model relates to the technical field of switching power supply testing, in particular to a switching power supply insulation and voltage resistance testing device, which comprises a base, four contact pins, a connecting frame, a first guide frame, an air cylinder, a clamping rod and a first elastic piece, the four contact pins are arranged on the base in a sliding manner, and the first guide frame is fixedly connected onto the base. A cylinder is mounted on the first guide frame, a clamping rod is mounted on a telescopic rod of the cylinder, a connecting frame is fixedly connected to the four contact pins, the connecting frame slides on the first guide frame and is sleeved with a first elastic piece, and the two ends of the first elastic piece are connected with the first guide frame and the base respectively. By starting the air cylinder, the telescopic rod of the air cylinder extends to drive the clamping rod to move upwards, so that the clamping rod is separated from the connecting frame, and the first elastic piece drives the connecting frame and the four contact pins above the connecting frame to move backwards, so that the contact pins are separated from the switching power supply, electric connection with the switching power supply is cut off, and electric shock between testing equipment and personnel caused by electric leakage is avoided.
Owner:SHENZHEN QIANZEHAO TECH CO LTD
Automobile leg rest compression testing device
ActiveCN224341223Usmooth rotationReduce die change timeMachine part testingVehicle testingMechanical engineeringStress sensors
The utility model relates to a kind of automobile leg support compression resistance testing device, including frame, disc body, limit mould, extruder and station switching mechanism, according to corresponding automobile leg support selects suitable limit mould, first pull pull rod and drive to move and resist touch column, resist touch column extrusion spring, resist touch column one end and the clamping groove of disc body edge are separated from clamping, can realize the rotation adjustment of disc body, the limit mould required is rotated to the extruder below, disc body rotates on several support ball, the rotation of disc body reduces friction, and column body follows rotation, column body can only rotate, cannot move in vertical direction, under the action of spring, resist touch column arc end is extruded into clamping groove, realize the positioning of disc body, i.
Owner:ANHUI KERUI MOLDING CO LTD