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150results about How to "Guaranteed test accuracy" patented technology
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Voltage transformer test method and system, storage medium and electronic equipment
ActiveCN119471539AImprove test efficiencyThe test result is accurateElectrical measurementsDesign optimisation/simulationTest efficiencyTransformer
The invention provides a voltage transformer test method and system, a storage medium and electronic equipment, and relates to the technical field of voltage transformers. According to the technical scheme provided by the invention, the corresponding test items are selected according to the to-be-put scene of the voltage transformer, and meanwhile, the plurality of test items are divided into the first test item combination which can share the same simulation working condition for testing and the second test item which needs to independently simulate the working condition, so that the low-efficiency condition of repeatedly constructing a complex simulation environment is avoided; the test efficiency is greatly improved; and the target simulation working condition is obtained through parameter updating of each first test item, so that the test result is more accurate. And finally, the first test item and the second test item are tested under different simulation working conditions, so that the test efficiency of the voltage transformer can be improved on the basis of ensuring the test precision.
Owner:FOSHAN MINGFUXING METAL MATERIALS CO LTD
Test method of underwater optical connector plugging test device
PendingCN119574047AGuaranteed validityReduce test errorWeather/light/corrosion resistanceTesting fibre optics/optical waveguide devicesSea temperatureAtmospheric sciences
The invention discloses a testing method of an underwater optical connector plugging testing device, which comprises the following steps of: injecting turbid seawater, pressurizing, adjusting the temperature of the turbid seawater, detecting the minimum plugging pressure of horizontal forward rotation, detecting the minimum plugging pressure of horizontal reverse rotation, detecting the minimum plugging pressure of forward inclination and forward rotation, and detecting the minimum plugging pressure of forward inclination and reverse rotation. And detecting the minimum plugging pressure of the reverse tilt forward rotation, and detecting the minimum plugging pressure of the reverse tilt reverse rotation. The invention relates to a test method of an underwater optical connector plugging test device, which can simulate a complex underwater environment and perform cable connection test.
Owner:HAINAN BRANCH OF CHINA NATIONAL OFFSHORE OIL (CHINA) CO LTD +2
USB (Universal Serial Bus) data line testing device for protecting joint
ActiveCN119575044Aavoid damageGuaranteed test accuracyElectrical testingMeasurement instrument housingUSBTest group
The invention relates to the technical field of USB data line testing, and discloses a USB data line testing device for protecting a connector, the USB data line testing device comprises a supporting bottom plate, a testing assembly used for testing a USB data line is arranged on the supporting bottom plate in a turnover manner, and the testing assembly comprises a detection unit and a detection head slidably connected in the detection unit; a clamping assembly is arranged at one end, far away from the turnover shaft, of the detection unit, and is used for clamping and fixing a connector of the USB data line to be tested; the bottom of the detection unit is provided with a vibration assembly used for knocking the clamping assembly and the connector of the USB data line in the clamping assembly. According to the invention, the screw rod and the guide shaft are arranged, the adjacent moving seats are linked through the driving of the screw rod and the connecting rod, the multiple groups of detection heads are driven to move and slide in the detection unit until the detection heads are plugged with the USB data line connector for testing, the plugging of an operator is not needed, and the damage of the connector caused by violent plugging of the operator is effectively avoided.
Owner:NINGBO YINZHOU ZHUOSHENGAO ELECTRONICS TECH CO LTD
Single-electrode silica gel sheet test circuit, device and method for physical therapy
PendingCN119667402Aimplement testImprove test efficiencyTesting dielectric strengthResistance/reactance/impedenceMicrocontrollerHemt circuits
The invention provides a single-electrode silica gel sheet test circuit, device and method for physical therapy. The single-electrode silica gel sheet test circuit comprises a microcontroller, a Darlington tube array chip circuit, a relay array, a signal conditioning circuit and the like. The microcontroller controls the Darlington array to amplify low-power signals, drives the relay array to achieve selection of different test paths, collects and processes test data, and transmits the test data to the computer through a serial port. The relay array alternately switches paths to complete each test item; the signal conditioning circuit is used for adjusting a test signal to meet the AD sampling requirement; the digital control analog switch realizes multiplexing of multiple paths of signals, and a single AD port acquires multiple paths of signals; and the state indicating circuit displays the test result and gives an alarm prompt. The system is specially used for a single electrode plate test scheme, the installation complexity can be remarkably reduced, the stability is improved, and the efficiency is greatly improved.
Owner:河南百昌源医疗科技有限公司
Scene combination-based automatic test method and device for dynamic diagram adjustment
ActiveCN119621565AGuaranteed completenessGuaranteed test accuracyError detection/correctionAlgorithmSimulation
The invention discloses a scene combination-based dynamic diagram adjustment automatic test method and device, and the method comprises the steps: firstly defining a basic test scene, a basic diagram adjustment strategy and an influence condition of the test scene through a configuration file, and then generating an automatic generation test scene based on the basic test scene, the basic diagram adjustment strategy and the influence condition of the test scene. The method comprises the following steps: testing a running diagram, providing a corresponding diagram adjustment strategy for each test scene, taking the test scene and the diagram adjustment strategy as an input file for dynamically adjusting the running diagram, finally analyzing an ATS log based on the input file, analyzing the adjustment condition of the running diagram, and comparing with the diagram adjustment strategy in the corresponding scene to output a test conclusion. According to the method, the most full scene of the running diagram dynamic adjustment and the diagram adjustment strategy in the corresponding scene can be output, the automatic test of dynamic diagram adjustment is completed, and the completeness of the test scene and the test accuracy are ensured.
Owner:成都地铁运营有限公司
Probe card full-automatic test system and test method
ActiveCN119281667Aincrease profitReduce labor costsCleaning using gasesSortingComputer hardwareTest efficiency
The invention relates to the technical field of probe card testing, and particularly discloses a probe card full-automatic testing system and a testing method.The probe card full-automatic testing system comprises a testing box, a conveying frame is fixedly arranged in the testing box, the left side and the right side of the conveying frame penetrate through the left side and the right side of the testing box, and a discharging frame is fixedly arranged on the rear portion in the testing box; and one side of the discharging frame extends to the rear part of the testing box. By synchronously recording the test parameters of each probe card, detailed data support is provided for subsequent quality analysis, the surface quality of the probe cards is checked before testing, the defective probe cards can be removed in time, invalid test processing on the defective products is avoided, and for the probe cards produced in batches, the test efficiency is greatly improved. The pre-screening mode can greatly improve the overall test efficiency, not only saves the test time, but also improves the utilization rate of test resources, reduces the operation time and energy consumption of equipment, and reduces the operation cost.
Owner:JIANGSU JINCHENG SEMICONDUCTOR CO LTD
Mounting structure of large-area film sensor for strain test
The utility model discloses a mounting structure of a large-area thin film sensor for a strain test. The mounting structure comprises a mounting adhesive, a protective adhesive and an adhesive tape, the bottom of the large-area thin film sensor is adhered to the surface of the to-be-mounted surface through mounting glue, the mounting glue between the test area and the to-be-mounted surface adopts surface mounting glue or a glue film, and the mounting glue between the circuit area and the to-be-mounted surface adopts fixing glue; the protective glue covers the top of the large-area film sensor and completely wraps the top and the side face of the whole large-area film sensor, and the adhesive tape covers the outside of the protective glue and completely wraps the outside of the whole protective glue. A regional installation mode is adopted, the circuit area is fixed by fixing glue which is easy to use, and the test area is installed by surface mount glue which needs to be pressurized, heated and cured, so that the test precision is ensured, the area which needs to be pressurized and heated is reduced, the problem that large-area pressurization and heating are needed when a meter-scale sensor is integrally mounted is avoided, and the installation speed is improved.
Owner:ZHONGHANG ELECTRONIC MEASURING INSTR (XIAN) CO LTD +1
Differential case fixing shaft loading test tool and test method
PendingCN119413610Aovercome limitationsimprove accuracyMaterial strength using steady torsional forcesGear wheelControl engineering
The invention belongs to the technical field of differential tests, and relates to a differential case fixing shaft loading test tool and test method.The differential case fixing shaft loading test tool comprises a supporting adjusting base, a linear hydraulic oil cylinder, a loading arm and a torque bearing piece, the torque bearing piece comprises a torque transmission piece and a differential, and the torque transmission piece is oppositely installed on the loading arm; the two torque transmission pieces are in key connection with half axle gears at the two ends of the differential mechanism respectively, torque sensors are installed on the torque transmission pieces, the torque transmission pieces are connected with the axial supporting seat through bearings, and the differential mechanism is fixedly installed in the fixed box body through a differential mechanism shell installation flange. The linear hydraulic oil cylinder is adopted for loading, horizontal force is converted into torque loaded on the half axle gears on the two sides of the differential through the loading arm, the half axle gears on the two sides are connected into a whole through the loading arm, the differential shell is fixed by the fixing box body, and meanwhile torque is loaded on the half axle gears on the two sides at the same time. The working condition that two half shafts of a differential mechanism of a real vehicle are subjected to torque at the same time is truly and effectively simulated.
Owner:JINAN DOCER TESTING MASCH TECH CO LTD
Pressure shear test machine oil pressure monitoring system and method based on scene analysis
ActiveCN119394806AEasy to adjustAvoid errorsMaterial strength using steady shearing forcesMonitoring systemReal time prediction
The invention discloses a pressure-shear tester oil pressure monitoring system and method based on scene analysis, and belongs to the technical field of oil pressure monitoring control, and the method specifically comprises the steps: collecting related data of a pressure-shear tester, including oil pressure data, load data, temperature data and displacement data, and preprocessing the collected related data of the pressure-shear tester, the method comprises the following steps: extracting different scene modes in a classified manner according to pre-processed related data of the compression-shear testing machine, an operation mode of the compression-shear testing machine and an external environment condition, establishing an oil pressure monitoring model based on scene analysis, predicting an oil pressure value in real time, and adjusting oil pressure in real time by utilizing an oil pressure control adjustment strategy based on an oil pressure prediction result. In the oil pressure monitoring process, automatic alarming is carried out on abnormal conditions, and an oil pressure control adjustment strategy is optimized based on historical data collected in the test process; according to different test conditions, the oil pressure variable quantity can be calculated in real time, the oil pressure can be accurately adjusted, and different test requirements can be met.
Owner:JINAN CHUANBAI INSTR & EQUIP
Inner hole coating bonding strength detection device
ActiveCN119643439Ameet the versatilitySmall structureUsing mechanical meansStrength propertiesStructural engineeringTest group
The invention discloses an inner hole coating bonding strength detection device, and belongs to the field of inner hole coating detection. Comprising a test assembly, a control assembly for controlling the test assembly, and a signal transmission assembly for transmitting a test result, the product to be tested is fixed on the test board through the positioning clamp; the test assembly extends into the inner hole of the product to be tested through the control assembly so as to control the scribing track, the scribing position and the scribing pressure of the test assembly; the test signal of the test assembly in the test process is obtained through the signal transmission assembly, and the test signal is transmitted to the control assembly to be displayed so as to assist man-machine interaction in the test process. According to the method, the problems of low detection precision of the inner hole pattern layer and bonding strength difference caused by incapability of quantitatively analyzing different process parameters in the prior art are solved.
Owner:CHINA MACHINE KAIBO SURFACE TECHNOLOGY (JIANGSU) CO LTD
Plume baffle device and method for attitude control nozzle thrust non-contact measurement
PendingCN119334519Aimprove accuracyAvoid errorsEngine testingMeasurement of force componentsAttitude controlLoad cell
The invention discloses a plume baffle device and method for attitude control nozzle thrust non-contact measurement, and belongs to the field of engine test. The device comprises a plume baffle, a dynamic indirect force transducer and a mounting bracket. The mounting bracket is fixed on one side of the multi-component test bed, the plume baffle is coaxially and fixedly connected with the dynamic indirect force transducer, the inclined surface of the plume baffle faces the attitude and orbit control engine to be tested and is coaxial with the attitude control spray pipe, and the dynamic indirect force transducer is fixed on the mounting bracket. The plume baffle bears plume impact of the attitude control spray pipe, the dynamic indirect force measurement sensor measures the impact force borne by the plume baffle, and a measurement result is fed back to the upper computer for processing. The device is used in cooperation with a multi-component thrust vector test system, and by establishing the corresponding relation between the thrust of the attitude control spray pipe and the impact force of the plume baffle, the test problems that in the thrust vector test of the solid attitude and orbit control engine, the thrust of the orbit control spray pipe and the thrust of the attitude control spray pipe influence each other, and the thrust test error of the attitude control spray pipe is large are solved.
Owner:XIAN CHANGFENG ELECTROMECHANICAL RES INST
Heat dissipation type detection jig
ActiveCN222353988UGuaranteed repeatabilityGuaranteed test accuracyResistance/reactance/impedenceElectrical testingElectrical resistance and conductanceMechanical engineering
The utility model relates to the technical field of resistance detection, and relates to a heat dissipation type detection jig. According to the utility model, the resistor product is positioned through the positioning groove on the positioning jig, and the moving assembly drives the detection assembly to move towards the resistor product, so that the plurality of probe parts on the detection frame are connected with the resistor product, and the resistance value of the resistor product can be obtained through an external test instrument. The same repeatability of resistance test of the resistor product is ensured, and the test accuracy is ensured; a heat dissipation through hole is formed in the positioning groove, so that when the resistor product is detected by a probe, a space at the bottom of the resistor product is in contact with air, and a heat dissipation effect is achieved; the moving assembly drives the plurality of probe parts to detect the resistor element in a manner of pressing down from the top, so that the probe parts can be exposed in the air, and a heat dissipation effect is achieved.
Owner:SHENZHEN YEZHAN ELECTRONICS
High-low temperature damp-heat box special for automatic lifting tensile machine
ActiveCN222419770UImprove stabilityeasy to replaceMaterial strength using tensile/compressive forcesScrew threadThreaded rod
The utility model relates to the field of tensile machines, in particular to an automatic lifting type tensile machine special-purpose high-low temperature damp-heat box which comprises a machine table, an assembly used for bearing a tensile machine and the high-low temperature damp-heat box and a fixing plate, the fixing plate is arranged above the machine table and used for fixing the high-low temperature damp-heat box, and a threaded rod penetrates through the outer portion of the fixing plate. The clamping device is provided with the fixing plates, the threaded rods, the clamping plates, the bearing table, the fixing sliding blocks, the high-low-temperature humid and hot box body and the clamping insertion blocks, the clamping insertion blocks can be pulled out of the high-low-temperature humid and hot box body according to the clamping requirement of a current material, and then the threaded rods are twisted to adjust the distance between the clamping plates; and then the high-low-temperature humid and hot box body is pushed to the rear side of the bearing table through the fixed sliding groove and the fixed sliding block, so that the upper tension clamping head and the lower tension clamping head are exposed, the tensile machine and the high-low-temperature humid and hot box body can be detached for use, and a clamp can be conveniently replaced according to different material clamping requirements.
Owner:WUXI SHANGKAI TEST EQUIP
Residual current operated circuit breaker test detection device and method
PendingCN119469714Aachieve installationeasy to controlMachine part testingCurrent/voltage measurementGear wheelElectric machine
The invention discloses a residual current operated circuit breaker test detection device and method, the device comprises an action execution device, a reciprocating driving mechanism and a state monitoring module, a direct current driving motor of the reciprocating driving mechanism is arranged in the action execution device, and the direct current driving motor is connected with a planetary gear speed reducer; the center of an output gear of the planetary gear reducer is provided with an output rod in a limiting mode in a sliding mode in the axial direction of the output gear, the output end of the output rod and the end face of the planetary gear reducer are connected with a thrust spring, the output end of the output rod is connected with an operating rod to rotate, and the operating rod is provided with an operating bit and a state monitoring module. According to the device, through cooperation of the output gear of the planetary gear reducer, the thrust spring and the output rod, forward thrust is given to the operation bit, so that the operation bit is tightly attached to the operation hole, and it is ensured that the operation bit cannot be thrown out of the operation hole due to the influence of centrifugal force; the state monitoring module monitors the opening and closing states of the circuit breaker through electric signals, thereby guaranteeing the test precision.
Owner:JIANGSU FRONTIER ELECTRIC TECH
SRB bus test method and related device
ActiveCN119292852AGuaranteed test accuracyImprove test efficiencyDetecting faulty computer hardwareTransmissionComputer hardwareGeneration process
The embodiment of the invention discloses an SRB bus test method and a related device, which can indicate to-be-tested equipment not to directly send generated to-be-sent information from a sending port when executing an information sending process. Instead, the first information completing the information generation process and the information transmission process is directly transferred to a receiving port of the to-be-tested equipment to indicate the to-be-tested equipment to execute the information receiving process, namely, the received information is transmitted to the data processing module to obtain the second information; whether the information transmission process is abnormal or not can be analyzed through the consistency between the second information and the to-be-sent information, then whether the information transmission function of the to-be-tested equipment is abnormal or not can be accurately analyzed, participation of other equipment is not needed in the process, actual information transmission is not needed, and the test efficiency is high.
Owner:BEIJING ZHONGTIAN STAR CONTROL TECH DEV CO LTD
Contact type terahertz characteristic parameter test system and test error correction method
PendingCN119510342Aeasy to integrateImprove signal qualityDielectric property measurementsMaterial analysis by optical meansSystem integrationSignal quality
The invention discloses a contact-type terahertz characteristic parameter test system and a test error correction method, and belongs to the technical field of tests.The test system is based on a 110GHz vector network analyzer, adopts a coaxial waveguide converter for frequency bands below 110GHz, and facilitates system integration; for frequency bands above 110 GHz, 110 GHz signals are used as excitation, the link size of the terahertz module is greatly reduced, the signal quality is remarkably improved, and the terahertz module has the characteristics of large dynamic state, high stability and the like by being matched with a material characteristic testing device, and can realize high signal-to-noise ratio acquisition of original signals; according to the test method provided by the invention, while the test precision is ensured, the operation complexity of the test system is reduced, automatic test of characteristic parameters can be realized, and the test precision can reach + / -1%; the power-adjustable terahertz receiving and transmitting integrated module can meet the test requirements of samples with different attenuation characteristics by adjusting the signal power; by using the terahertz detector, the complexity of a traditional test system is reduced, and the test dynamic state of the system is improved.
Owner:CHINA ELECTRONIS TECH INSTR CO LTD
Gini coefficient measurement-based prefabricated floor regularity quantitative evaluation method and system, electronic equipment and storage equipment
ActiveCN119557966AImprove test efficiencyaccurate assessmentGeometric CADDesign optimisation/simulationFloor slabStructural engineering
The invention discloses a Gini coefficient measurement-based prefabricated floor regularity quantitative evaluation method and system, electronic equipment and storage equipment, belongs to the technical field of electrical data processing, and relates to prefabricated building prefabricated floor regularity quantitative evaluation by using building data. The method comprises the following steps: calculating a regularity weight factor of each subunit based on a box dimension; sorting the areas of the subunits from low to high; after sorting, calculating the cumulative weight ratio and the cumulative area ratio of each subunit; constructing a Lorentz curve according to the cumulative weight ratio and the cumulative area ratio, and calculating the curve area corresponding to each subunit and the sum B of all curve areas; and calculating a Gini coefficient G: # imgabs0 #. According to the method, quantitative evaluation can be carried out on the regularity of the prefabricated floor slab more accurately and efficiently.
Owner:CHENGDU BENCHMARK FANGZHONG ARCHITECTURAL DESIGN CO LTD
Variable-range ultrasonic flow testing system and testing method
ActiveCN119573827Aachieve adaptiveImprove test accuracyVolume/mass flow measurementVolume meteringTransducerAxial distance
The invention discloses a variable-range ultrasonic flow testing system and a variable-range ultrasonic flow testing method. The system comprises an underground ultrasonic signal receiving and transmitting device and a ground control terminal, the ultrasonic signal receiving and transmitting device comprises a first flow guide pipe and a second flow guide pipe which are movably connected in a sealed mode, a first ultrasonic transducer and a second ultrasonic transducer which are arranged on the first flow guide pipe and the second flow guide pipe respectively, a screw rod and a transmission mechanism. A first protrusion and a second protrusion are arranged on the outer side of the first flow guide pipe and the outer side of the second flow guide pipe respectively, the first protrusion is provided with a first through hole allowing the screw to penetrate through, and the second through hole of the second protrusion is provided with internal threads matched with threads of the screw. The control terminal is used for determining the flow according to the echo signals collected by the ultrasonic signal receiving and transmitting device, and if the flow is not within the predicted flow interval, the transmission mechanism is informed to drive the screw to rotate correspondingly. The system can adapt to different flow tests by automatically changing the axial distance between the two ultrasonic transducers under the condition that the diameter of the flow passage is not changed.
Owner:SCI & TECH RES INST LTD PETRO CHINA +1
Aluminum foil easy-tear cover opening force test tool
ActiveCN224744453URapid breaking forceQuick full force test
This utility model relates to a fixture for testing the opening force of aluminum foil easy-tear caps, including a base plate and an inclined panel integrally formed at a 45° angle to the base plate. An aluminum channel slide rail is fixedly mounted on the inclined panel, and symmetrically slidable clamps are arranged on the aluminum channel slide rail. The clamps are fixed by bolts, and the aluminum foil easy-tear cap to be tested is clamped between the symmetrically arranged clamps. This utility model has a simple structure and is easy to operate, enabling rapid testing of the tearing force and full opening force of aluminum foil easy-tear caps. Furthermore, the clamps are movable on the aluminum channel slide rail, allowing testing of aluminum foil easy-tear caps of different diameters.
Owner:CHINA PACKAGING RES & TEST CENT
Clamping device of connecting rod fatigue test device
ActiveCN224102759UEnsure connection tightnessGuaranteed test accuracyMachine part testingWork holdersClassical mechanicsMechanical engineering
Owner:ZHEJIANG XINCHAI
A fault-crossing tunnel model experiment lining active protection device and protection method
The present application relates to the technical fields of tunnel engineering test, and discloses a kind of through fault tunnel model experiment lining active protection device and protection method, set in tunnel lining interior, the through fault tunnel model experiment lining active protection device includes inflatable air cushion main body, subsection air charging and discharging component, active sensing adjustment component and flexible curvature compensation connecting component, the inflatable air cushion main body includes sealed air cushion chamber and separation component, the separation component is spaced apart and arranged in sealed air cushion chamber interior;The subsection air charging and discharging component is respectively communicated with first sealed air cushion, second sealed air cushion and third sealed air cushion respectively;The active sensing adjustment component is used to respectively collect the cavity information of first sealed air cushion, second sealed air cushion and third sealed air cushion;The flexible curvature compensation connecting component is arranged at the connecting place of first sealed air cushion and second sealed air cushion and the connecting place of second sealed air cushion and third sealed air cushion.
Owner:INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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
Wide-range-ratio ultrasonic flow testing system and testing method
ActiveCN119555168ATurndown ratioGuaranteed accuracyVolume/mass flow measurementVolume meteringTransducerEngineering
The invention discloses a wide-range-ratio ultrasonic flow testing system and a testing method. The testing system comprises an underground ultrasonic signal receiving and transmitting device and a ground control terminal. The ultrasonic signal receiving and transmitting device comprises a test flow guide pipe, and a first ultrasonic transducer and a second ultrasonic transducer which are arranged on the test flow guide pipe according to a certain axial distance; the control terminal is used for determining the time difference between the forward flow and the reverse flow according to a first echo signal collected by the first ultrasonic transducer and a second echo signal collected by the second ultrasonic transducer in the same test period, judging whether the excitation signal periods of the first ultrasonic transducer and the second ultrasonic transducer are both larger than the time difference between the forward flow and the reverse flow or not, and if not, determining the time difference between the forward flow and the reverse flow. The excitation frequency of the corresponding ultrasonic transducer is adjusted, so that the excitation signal period is larger than the forward and reverse current time difference. The system can meet the requirement of a large-span flow test range by adjusting the excitation frequency of the ultrasonic transducer under the condition that the structural size of the test flow guide pipe is not changed, and the measuring range ratio of flow test is greatly expanded.
Owner:SCI & TECH RES INST LTD PETRO CHINA +1
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
Multi-core automatic testing method based on POS terminal
ActiveCN119645843AGuaranteed test accuracyreduce error rateError detection/correctionTested timeNonStop
The invention provides a multi-core automatic testing method based on a POS terminal. The method comprises the following steps: establishing communication connection between the POS terminal and a target testing tool; the POS terminal sends a test request to the target test tool; the target test tool obtains the types and the number of kernels which are configured on the POS terminal and need to be tested at the time, and then a test file set is generated; and the standard test tool performs automatic polling on each test scheme according to the test file set, interacts with the POS terminal and performs performance test on the corresponding kernel of the POS terminal every time one test scheme is polled until all the test schemes are polled, and comprehensive performance test on the multiple test point positions of each kernel of the POS terminal is realized. According to the automatic testing process, the testing time can be greatly shortened, the testing process can be efficiently and stably carried out, the testing work can be continuously carried out, and the manual operation time, the operation error rate and the number of personnel can be effectively reduced.
Owner:AITIWEIER ELECTRONICS TECH BEIJING
A spliced power module test fixture
ActiveCN110865310BGuaranteed test accuracyImprove test efficiencyPower supply testingMeasurement instrument housingTest powerProduct testing
The present invention proposes a spliced power module test fixture, comprising: a clamping box, a cable, a plurality of jack assemblies, a plurality of transverse blocks and a plurality of longitudinal blocks, a through hole is arranged on the front end plate of the clamping box, and the rear end plate of the clamping box is detachably connected with the left and right side plates and the bottom plate of the clamping box; the cable passes into the clamping box from the through hole, and the cable contains a plurality of wires; the upper end of each jack assembly is respectively provided with a plug-in hole, and the lower end of the jack assembly is connected with the wires in the cable; each transverse block is spliced on the left and / or right side of one or more jack assemblies to adjust the transverse position of the jack assembly in the clamping box; each longitudinal block is spliced on the front and / or rear side of one or more jack assemblies to adjust the longitudinal position of the jack assembly in the clamping box. The present invention can test power modules with different packaging forms and pin arrangements, ensuring the test accuracy of the product and improving the test efficiency.
Owner:XIAN DONGFENG INSTR FACTORY
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
Typical stress joint strength performance test clamp
ActiveCN222529103Ustable positionGuaranteed test accuracyMaterial strength using tensile/compressive forcesMachineTest fixture
The utility model relates to a typical stress joint strength performance test fixture, which belongs to the technical field of test fixtures, and comprises a support fixture for supporting a typical stress joint and a loading fixture for applying external force to the typical stress joint, the typical stress joint is detachably connected with the support fixture, and the loading fixture is detachably connected with the typical stress joint. And the typical stress joint is rotationally connected with the loading clamp. The special fixture is designed aiming at a specific workpiece, so that a test piece can be kept at a stable position in a test process, errors caused by workpiece displacement are reduced, and the test accuracy is improved; according to the design of the special fixture, the operation convenience is considered, the operation difficulty is reduced, and testers can easily understand and use the fixture; the clamp can be operated on different testing machines, has high adaptability and can play a role in various testing scenes; the special clamp is simple in structure, easy to disassemble and clean and beneficial to keeping equipment clean, and the service life is prolonged.
Owner:HANGZHOU INNO RELIABILITY TECH CO LTD