57results about How to "Improve test security" patented technology

According to the nondestructive mercury probe testing device, a sample table is provided with an upper surface and a lower surface which are used for adsorbing a semiconductor to be tested in a vacuum mode, an air inlet hole penetrates through the sample table and extends to a first mercury bottle and a second mercury bottle respectively, so that the first mercury bottle and the second mercury bottle are communicated with the atmosphere, and a point electrode contact hole is formed in the upper surface and is covered by the semiconductor to be tested. The C-type electrode contact groove is arranged on the upper surface and is covered by a semiconductor to be detected, the vacuum pumping hole is arranged on the sample table and extends into the liquid collection bottle for vacuumizing, the vacuum pumping hole is used for vacuumizing, and first liquid mercury in the first mercury bottle enters the point electrode contact hole connecting hole through the first metal connecting pipe so as to fill the point electrode contact hole and be in contact with the semiconductor to be detected; second liquid mercury in the second mercury bottle enters the C-type electrode contact groove connecting hole through the second metal connecting pipe so as to fill the C-type electrode contact groove and make contact with the semiconductor to be tested. The CV tester is connected with the first signal outgoing line and the second signal outgoing line so as to measure a CV curve.

The invention relates to the technical field of aircraft seat installation and detection, in particular to an aircraft seat installation and detection device which comprises a working table top, two clamping assemblies and a sliding test assembly, a vertical plate is fixedly arranged at the top end of the working table top, a second notch is formed in the side wall of the vertical plate, and a two-way lead screw is rotationally connected to the middle of the second notch; a servo motor is fixedly arranged on the side wall of the vertical plate, the output end of the servo motor is fixedly connected with one end of a bidirectional lead screw through a coupler, a positioning block is fixedly arranged on the side wall, close to the upper portion of the second notch, of the vertical plate, and a seat sliding rail assembly is arranged on the outer surface of the positioning block. Through cooperation of the servo motor, the second notch, the bidirectional screw rod, the positioning block, the clamping assembly and the sliding test assembly, the servo motor is started to drive the bidirectional screw rod to rotate so as to drive the two clamping jaws to move oppositely to clamp the base, and the convenience and stability of installation and positioning of the seat sliding rail assembly are improved; therefore, the efficiency and the stability of installation detection of the seat slide rail assembly are improved.

The invention discloses a device and method for simultaneously determining the detonation velocity and detonation pressure of micro-scale charge, and belongs to the technical field of detonation performance testing of energetic materials. The device comprises a laser, a charging system, a detonation velocity testing system and a detonation pressure testing system, the charging system comprises a charging clamp, a sample containing groove and a sample ring, the sample containing groove is fixed in the charging clamp, and the sample ring is assembled in the sample containing groove; the detonation velocity testing system comprises a probe, a direct-current power supply and an oscilloscope; the detonation pressure testing system comprises an optical fiber and a photon Doppler velocity tester. During use, a to-be-tested sample is pressed into the sample rings, the probe is embedded between the two sample rings, the to-be-tested sample is detonated by using energy provided by the laser, the detonation velocity and detonation pressure of the to-be-tested sample can be measured at the same time, the sample amount required by a single shot experiment is within 200 mg, and compared with a traditional test method, the sample consumption is greatly reduced, and meanwhile, the test safety is improved.

This invention discloses a testing device and method for liquid crystal display modules, relating to the field of liquid crystal display module testing technology. The device includes a base, a flipping bracket, a housing, and a testing platform. The testing platform is equipped with a bidirectional clamping device driven by a first motor for automatically clamping the liquid crystal display module for bending resistance testing, and an auxiliary bending mechanism to ensure uniform force distribution. The housing also houses a click-resistance testing mechanism, including an electric hammer, a pressure sensor, and a displacement sensor, for testing the screen's resistance to click pressure. After testing, debris is automatically removed by a multi-stage cleaning mechanism including a scraper and a spray nozzle. When the testing platform flips, the spray nozzle moves closer to the testing platform to improve the cleaning effect. This invention features a high degree of automation, integrating bending resistance testing and click testing, providing accurate testing and thorough cleaning, effectively improving the efficiency and safety of liquid crystal display module mechanical performance testing.

The invention discloses battery clamp performance test equipment and a test method thereof.The battery clamp performance test equipment comprises test paper, a to-be-tested piece and a mounting bottom plate, a side fixing block is mounted on the mounting bottom plate, a connecting rod is rotationally connected into the side fixing block, the to-be-tested piece is mounted in the side fixing block through the connecting rod, and the to-be-tested piece is mounted on the mounting bottom plate through the connecting rod. The test paper is located on one side of a clamping opening of a to-be-tested piece, an installation bin is installed on the installation bottom plate, and the installation bin comprises bin supports on the two sides. The battery clamp performance testing device, the testing method and the using method have the advantages that the testing precision and efficiency are improved, automatic testing is achieved, the performance of the to-be-tested piece is visually reflected, data recording and analysis are facilitated, the flexibility and expandability of the device are enhanced, and the testing safety is improved. Accuracy and reliability of test results are ensured, and powerful support is provided for quality control and performance improvement of battery clamp products.

The application discloses a kind of ship intelligent navigation algorithm simulation verification system and test method, the system uses four-layer modular structure, including: virtual navigation environment module, standardization data interaction module, algorithm execution module, quantitative evaluation module;Between each module, standardization data interaction module is realized two-way data transmission, forms the complete simulation verification system capable of independent test and closed-loop operation.The method, using the system, the steps are: step 1: build inland virtual navigation scene, step 2: select test mode and configure algorithm, step 3: start simulation and data acquisition, step 4: evaluation index calculation, step 5: generate verification report.The algorithm unit of the application can be independently accessed to test, without overall reconstruction, perception, decision-making, control algorithm can be quickly adapted, greatly reduce the difficulty of integration debugging, improve algorithm development and verification efficiency, effectively shorten the intelligent ship development cycle.

The invention relates to a wire insulation defect detecting and positioning device which comprises a signal generating device (1), a signal collecting and analyzing device (2) and a test switching cable (3). The signal generating device [1] is used for providing a high-frequency signal with a certain amplitude to a tested wire; the signal collecting and analyzing device (2) collects incident high-frequency signals and reflected high-frequency signals in the wire and processes, displays and analyzes the collected incident high-frequency signals and reflected high-frequency signals. And the test switching cable (3) is connected with the signal generation device (1) and the tested lead (6) and is connected with the signal acquisition and analysis device (2) at the same time. The device provided by the invention is high in test safety, does not involve high-voltage direct current and alternating current, does not cause damage to equipment and personnel, and can discover hidden insulation defects and position the hidden insulation defects.

The utility model, which relates to the technical field of LED detection, discloses a lamp-drive integrated packaging LED processing detection apparatus comprising a housing, a power supply, a processor and a test tool. The processor is arranged in the shell, and the test tool is arranged at the top of the shell; the power supply is arranged in the shell and is used for supplying power to the test tool and the processor; the processor is internally provided with a register, the register can control the corresponding testing tool according to the control requirement, the electrical connection function of the lamp bead and the reliability problem (such as dark crack and crush) of an integrated circuit can be detected, the pain point that the industry depends on high-error light splitting equipment or terminal assembly detection is solved, the quality control efficiency of the manufacturing process is remarkably improved, and the production cost is reduced. Two modes of single-point control and breakpoint resume are supported, different test scenes are flexibly coped with, and accurate positioning of faults in a complex circuit is ensured; testing of series connection, parallel connection and different pin positions is supported, and diversified production requirements are met.

The invention belongs to the field of energetic material detonation performance detection, and particularly provides a macroscopic parameter rapid detection spectrum system and method.The system comprises an optical lens set, the optical lens set comprises a beam expanding lens, a first dichroscope, a second dichroscope and a third dichroscope, and a microscope objective is arranged on the downstream of the optical path of the optical lens set; the beam expander is used for receiving a laser pulse emitted by the pulse laser, the first dichroscope is used for receiving a light beam emitted by the visible light source, the second dichroscope is used for reflecting a sample optical signal transmitted by the third dichroscope into the CMOS camera, the third dichroscope is used for reflecting a plasma spectrum transmitted by the microscope objective to the convex lens, and the convex lens is used for reflecting the plasma spectrum transmitted by the microscope objective to the visible light source. An optical fiber is arranged on the side, away from the third dichroscope, of the convex lens and connected with the spectrograph, and the microscope objective is arranged above the sample table. According to the spectrum system, the energetic material single particle micro-explosion is loaded through laser to generate plasma, plasma radiation spectrum information is collected, and parameter prediction of the energetic material is achieved.

The utility model relates to the technical field of electric core simulation, concretely is a kind of multi-string electric core simulation board, it is characterized in that, including power supply, terminal, first row pin, adjustable resistance, LED pilot lamp module, dial switch and second row pin, the terminal is connected with power supply, and the terminal two wiring ports are all with the anode of adjustable resistance;Adjustable resistance one end is connected in parallel with first row pin, and the other end is connected in parallel with LED pilot lamp module;Dial switch one end is connected with adjustable resistance, and the other end is connected with second row pin;Simulation board is equipped with multiple terminals, first row pin, adjustable resistance, LED pilot lamp module and dial switch respectively, and second row pin includes the parallel connection of H21 and H22.The utility model solves the uncontrollability problem of real electric core, accurately adjusts output voltage, internal resistance and other parameters by electronic circuit, can simulate any fault state in real time, flexibly, without relying on the physical change of real electric core, greatly improves test efficiency;Promote test security;Ensure test consistency and repeatability.

The utility model discloses a high and low temperature testing device for a manipulator, which comprises a testboard, the top of the testboard is provided with a measuring and moving mechanism capable of horizontally moving, the measuring and moving mechanism comprises a clamp assembly for locking and hanging the manipulator, and the clamp assembly comprises a motor and a hanging frame arranged at the output end of the motor; a plurality of clamp structures are hinged to the hanging frame, and the mechanical arms are locked on the clamp structures. The device further comprises a cold medium groove and a hot medium groove which are matched with the displacement measuring mechanism, in the testing process, the mechanical arm is soaked in the cold medium groove to be subjected to cold soaking, the displacement measuring mechanism moves into the hot medium groove to be subjected to hot soaking, automatic testing is achieved in the mode, the testing efficiency is improved, and the testing safety is improved.

The utility model provides a soft package battery cell testing device. The soft package battery cell testing device comprises a first clamping plate and a second clamping plate which are detachably connected and used for clamping the first end of a soft package battery cell between the first clamping plate and the second clamping plate; the displacement measuring device and the first clamping plate or the second clamping plate are arranged in a spaced mode in the first direction, the displacement measuring device comprises a trigger part, the trigger part is used for making contact with the bottom, close to the second end, of the soft package battery cell, and the trigger part is flush with the top of the first clamping plate in the thickness direction of the first clamping plate; the first clamping plate and the displacement measuring device are connected to the base. The device is simple in structure and convenient to use, a measurement result displayed by the displacement measurement device can visually reflect the strength of the tested soft package battery cell, and a tester can conveniently record and arrange the strength of the soft package battery cell. Meanwhile, in the process of testing the strength of the soft package battery cell, the tested soft package battery cell cannot be damaged, the same soft package battery cell can be repeatedly tested, the test cost can be reduced, and the test safety is also improved.

A composite insulator tension testing device with a clamping function disclosed by the present invention comprises a stretching mechanism, a protection mechanism and a connection mechanism, the protection mechanism is movably connected to the top of the stretching mechanism, the connection mechanism is movably connected to the top of the stretching mechanism, and the connection mechanism comprises an adjusting unit and a clamping unit. The adjusting unit is movably connected to the top of the stretching mechanism, and the clamping unit is movably connected to the side face of the adjusting unit. According to the invention, the motor is matched with the threaded rod for driving to realize automatic clamping of the insulator, the tension sensor is matched to accurately record tension data in real time, data processing and analysis are carried out through the intelligent control system, and meanwhile, the design of the protection frame is arranged to effectively prevent fragments from splashing when the insulator is broken; and the tension test of the insulator at different environment temperatures can be simulated, and the performance of the insulator at different temperatures can be comprehensively evaluated.

The invention discloses a liquid hydrogen superconducting co-melting energy storage semi-physical simulation system which comprises a liquid hydrogen superconducting co-melting energy storage physical system, a real-time simulation machine and an upper computer. The liquid hydrogen superconducting co-melting energy storage physical system comprises a fuel cell device, a water electrolysis hydrogen production device and a liquid hydrogen cooling superconducting magnetic energy storage device. The fuel cell device is used for providing electric power supply for the electric power system; the water electrolysis hydrogen production device is used for converting electric energy into chemical energy to be stored in hydrogen; the liquid hydrogen cooling superconducting magnetic energy storage device is used for carrying out liquid hydrogen energy storage and superconducting magnetic energy storage; the real-time simulation machine is used for generating a control signal of the liquid hydrogen superconducting co-melting energy storage physical system according to the operation parameters of the liquid hydrogen superconducting co-melting energy storage physical system and the operation condition of the simulation renewable energy power generation system; and the upper computer is used for monitoring and managing the operation conditions of the real-time simulation machine and the liquid hydrogen cooling superconducting magnetic energy storage real object device. According to the invention, the accuracy and reliability of the simulation result can be improved.

The invention provides a high-pressure testing device of a solid oxide fuel cell and a control method of the high-pressure testing device, and relates to the technical field of solid oxide fuel cell testing, and the testing device comprises a heating furnace module and a gas supply and pressure control module. The heating furnace module comprises a containing furnace body and a heating furnace body. The gas supply and pressure control module comprises an air supply and pressure control assembly, a fuel gas supply and pressure control assembly and a nitrogen supply and pressure control assembly; the air supply and pressure control assembly comprises an air supply pipeline, an air discharge pipeline and a first backpressure regulating valve; the fuel gas supply and pressure control assembly comprises a fuel gas supply pipeline, a fuel gas discharge pipeline and a second backpressure regulating valve; and the nitrogen supply and pressure control assembly comprises a nitrogen supply pipeline, a nitrogen discharge pipeline and a third backpressure regulating valve. The high-voltage test device of the solid oxide fuel cell can avoid the problems of material damage, structure failure or leakage and the like, and can improve the test safety.

The utility model discloses an integral casting type high-speed three-dimensional flow impeller tension testing device which comprises a protection box, a sliding rail fixedly connected to the inner bottom surface of the protection box, a first sliding block connected to the sliding rail in a sliding mode, a supporting plate fixedly connected to the upper surface of the first sliding block, and a first motor fixedly connected to the side surface of the supporting plate. The output end of the first motor is fixedly connected with a testing rod, the testing rod is fixedly connected with a fixing plate, the rear surface of the fixing plate is fixedly connected with a second motor, the output end of the second motor is fixedly connected with a lead screw, the lead screw is slidably connected with a second sliding block, and the upper surface of the second sliding block is fixedly connected with a connecting rod; through cooperation of the sliding rail, the first sliding block, the supporting plate and the protection box, testing can be conducted in the box body, damage and splashing are prevented from hurting workers in the testing process, the testing device can automatically slide into and out of the box body, and the testing efficiency and convenience can be improved.

The utility model belongs to the technical field of electrical equipment maintenance, and specifically relates to a plug-in relay performance rapid tester. Comprising a control and data processing unit, a man-machine operation module, a fixed power supply module, an adjustable power supply module, a voltage grade selection switch, a data acquisition unit, an alarm unit, a protection unit, a storage unit and a heat dissipation unit, the control and data processing unit is respectively connected with the man-machine operation module, the fixed power supply module, the adjustable power supply module, the voltage level selection switch, the data acquisition unit, the alarm unit, the protection unit and the heat dissipation unit, and the man-machine operation module is also respectively connected with the fixed power supply module and the storage unit. The utility model has the advantages that: through the device, voltage loading can be automatically carried out on a relay coil, action voltage and return voltage can be automatically recorded, various performance parameters of a relay can be automatically calculated, an alarm can be given for unqualified test parameters, test results can be automatically recorded, and a report can be formed.

The utility model discloses a relay withstand voltage test device, which comprises a case, and a test board used for installing a relay is arranged in the case. A probe mechanism and a high-voltage tester are also arranged in the case; the probe mechanism comprises a first driving assembly, a second driving assembly and a third driving assembly, the first driving assembly comprises a first driving piece, a first sliding rail and a first sliding block, the second driving assembly comprises a second driving piece, a second sliding rail and a second sliding block, and the third driving assembly comprises a third driving piece, a third sliding rail and a third sliding block; a first probe is arranged on the second sliding block; the third sliding block is provided with a second probe, the first probe and the second probe are both connected with a high-voltage tester, and the polarity of the first probe is opposite to that of the second probe. The relay withstand voltage test device is provided with the probe mechanism and the high-voltage tester, the probe mechanism can be adjusted in the longitudinal direction and the horizontal direction so that the first probe and the second probe can be tested, the test efficiency can be improved, and the test safety can be improved.

The invention provides a laser-loaded single-particle energetic material detonation velocity rapid prediction method and system, pulse laser is used for loading a single-particle energetic material to generate shock waves, an enhanced sCMOS camera is used for collecting shock wave images, shock wave position information in the shock wave images is used for calculating shock wave characteristic velocity, and the detonation velocity of the single-particle energetic material is predicted according to the shock wave characteristic velocity. A linear relation model is established for the shock wave characteristic speed and the known macroscopic detonation velocity through partial least square regression, and rapid prediction of the detonation velocity of the energetic material is achieved; according to the invention, the consumed sample amount is extremely small, the interaction among particles is eliminated, the safety is high, the laser pulse can only excite one single-particle energetic material each time, and the test can be completed only by using the particle-level energetic material; the method is of great significance in improving the testing safety of the energetic material and testing the performance of the energetic material with ultra-small dose and even multiple single-particle magnitudes.

The invention discloses a parking air conditioner warm air performance testing technology and device and a computer program product, during parking, cooling liquid of a parking air conditioner is heated through a vehicle independent heat source to provide warm air, the independent heat source is connected with an oil pump through an oil pipe, and the oil pump is used for providing fuel oil in a container to the independent heat source to generate heat; the testing process comprises the steps that a vehicle is in a parking state; determining to start the oil pump according to the user operation instruction, and recording operation time of the oil pump; when the operation time reaches a time threshold value, the fuel quantity is confirmed according to fuel in the oil pipe at the joint of the oil pump and the independent heat source and a fuel liquid level sensor in the independent heat source, and the purpose of testing the oil pump is achieved. According to the test process, the damage to the device caused by a dry burning phenomenon due to misoperation can be avoided, and the test safety is improved. And meanwhile, when the parking air conditioner is tested, the program selects corresponding test standards according to different outdoor temperatures, so that not only is intelligent test realized, but also the requirement of a production line on test time is met.

The invention discloses an electronic product aging automatic test platform and a test method thereof, and relates to the technical field of electronic product aging test. The electronic product aging automatic test platform comprises a to-be-tested electronic product body and a test platform used for testing the electronic product, and the test platform is provided with a test assembly used for carrying out aging test on the electronic product body and a safety assembly used for isolating oxygen. The top cover is movably installed at the top of the test platform through a support and used for being matched with the test platform to form a closed space, a storage battery used for providing power for the electronic product body is fixed to the bottom of the test platform, the test safety is improved, meanwhile, the test steps are simplified, the test time is saved, and the test efficiency is improved; the carbon dioxide gas and the sodium hydroxide solution can be recycled, resources are saved, environment friendliness is achieved, and meanwhile the operation and maintenance cost is reduced.

The utility model relates to a laser head zero focus detection device, and belongs to the field of laser head testing. According to the technical scheme, the laser head zero focus detection device comprises a platen, a first linear moving assembly and a second linear moving assembly are arranged on the platen, the moving direction of the first linear moving assembly is perpendicular to the moving direction of the second linear moving assembly, a laser head mounting base is arranged on the first linear moving assembly, and a laser head is arranged on the laser head mounting base. And a light spot analyzer is mounted on the second linear moving assembly. The beneficial effects of the utility model are that according to the scheme, the laser head is detected by the light spot analyzer, the laser head is aligned to the light spot analyzer through the two groups of mutually perpendicular linear moving mechanisms, and then the light spot analyzer detects the size of a light spot projected by the laser head, so that the zero focus position of the laser head when the light spot is minimum is obtained; the laser head in the device is simpler and more convenient to install, the test is quick and accurate, actual cutting is not needed, and the power consumption required by the test is lower and safer.

The invention relates to the field of data security, and provides an interface simulation test method, device, equipment and medium, the method comprises the following steps: using a command line to pull a simulation agent script, and mounting the simulation agent script to a target server to form a simulation agent mechanism; registering the service information to a simulation management platform to configure a plurality of simulation rules of the to-be-tested interface; and for the plurality of simulation rules, calling a simulation agent mechanism by using the development component to intercept a test request to perform corresponding matching test processing on the plurality of simulation rules and the test request to obtain a target test result of the to-be-tested interface when the target server sends the test request to other associated servers. According to the embodiment of the invention, the simulation test does not need to be carried out by introducing a jar packet into the code or through a gateway, so that the dependency is reduced, the test safety is further improved, the standardized processing of the interface simulation test is realized, and the test efficiency is improved.

The invention relates to the technical field of liquid supply systems, and discloses a high-pressure filter station test system and a test method.The test system comprises a liquid supply module, a test bed and a control module, the liquid supply module comprises a liquid tank and a liquid supply pump, the test bed comprises a reversing valve, an inlet of the liquid supply pump is connected with the liquid tank, and an outlet of the liquid supply pump is connected with a liquid inlet of the reversing valve; the reversing valve is provided with a plurality of functional ports, the plurality of functional ports comprise a plurality of test functional ports and a pressure relief functional port, the plurality of test functional ports are respectively connected to a liquid inlet of the tested high-pressure filter station through corresponding pipelines to form different test hydraulic loops, and the pressure relief functional port is connected with the liquid tank to form a pressure relief loop. A liquid return port of the reversing valve and a liquid return port of the tested high-pressure filter station are respectively connected with the liquid tank; and the control module is connected with the reversing valve so as to switch the plurality of test hydraulic loops and the pressure relief loops. The system is high in integration level, comprehensive in performance, high in test efficiency and accuracy, and high in safety.

The invention provides an automatic test device and a test method for an adjustable scene of left and right parking of an automobile, and belongs to the technical field of intelligent driving test. The test device comprises a test upper computer used for outputting a first control instruction and a second control instruction in response to a test instruction of a user; the multi-degree-of-freedom dynamic scene generation system is used for receiving the first control instruction and generating test scenes on the left side and the right side of the tested vehicle based on the first control instruction; the test control terminal is used for receiving the second control instruction and triggering the parking-out or parking-in operation of the tested vehicle based on the second control instruction; the position sensing device is used for collecting position data of a detected vehicle and an obstacle in real time; the test upper computer is also used for generating a test result based on the position data. According to the device, through integrating the test upper computer, the dynamic scene generation system and the position sensing device, automatic scene construction is realized, the test efficiency is improved, and the device has the advantages of realizing standardized test conditions and covering more boundary scenes.

The utility model discloses a self-protection liquid crystal display mode test jig which comprises a jig body, the top of the jig body is provided with a pre-electrifying and testing device and a fixing groove, the jig body is internally provided with an adjusting groove, and the side portion of the fixing groove is provided with a dismounting opening; a second cover plate is arranged at the top of the fixing groove, a connecting shaft is rotationally connected to the side of the adjusting groove, a gear is fixedly connected to the bottom of the connecting shaft, a rack is connected to the outside of the gear in a meshed mode, an ejector rod is fixedly connected to the back of the rack, a top plate is fixedly connected to the top of the ejector rod, and a spring is arranged at the bottom of the ejector rod. By means of the device, pre-power-on monitoring current flows through a power supply loop, so that whether load short circuit exists or not is judged, the circuit is effectively protected against damage, the rotating shaft is rotated to drive the gear to be meshed with the rack, linear motion of the ejector rod pushes the ejector plate to enable the liquid crystal display screen to be separated from the fixing groove, and dismounting operation is greatly facilitated.

The invention discloses a loading device of an air circuit breaker, which comprises a test board, an air circuit breaker body and a processing assembly arranged outside the air circuit breaker body are arranged above the test board, the processing assembly comprises a clamping assembly arranged outside the air circuit breaker body, and a protection assembly is arranged outside the clamping assembly. When an air circuit breaker body needs to be tested, the air circuit breaker body needs to be clamped on the top face of a test table, the air circuit breaker body is placed on the inner side of a clamping plate, at the moment, a first telescopic rod is started to drive a supporting plate to move upwards, the outer wall of an extrusion rod fixedly installed in the supporting plate slides and extrudes the interior of an inclined frame, and the inclined frame slides on the outer wall of a limiting rod; push plates fixedly installed at the ends of the inclined frames move towards the air circuit breaker body, and the two push plates drive sliding rods slidably arranged in the push plates to move along with the push plates, so that the outer walls of clamping plates fixedly installed at the ends of the sliding rods make contact with the outer wall of the air circuit breaker body.

The invention relates to the technical field of sports equipment, and discloses a portable pull-up auxiliary device for student physique testing, which comprises supports and a cross bar, an auxiliary mechanism is arranged between the two supports, the top of each support is provided with an adjusting mechanism, the adjusting mechanism is connected with the cross bar, and the cross bar is connected with the auxiliary mechanism. A protection mechanism is arranged on the top of the adjusting mechanism, and magnesium powder mechanisms are arranged on the sides, away from each other, of the two supports. The auxiliary mechanism comprises two first supporting plates, the outer sides of the first supporting plates are fixedly connected to the outer side of the support, the two first supporting plates are oppositely arranged, and the tops of the first supporting plates are fixedly connected with supporting rods. Auxiliary elastic force is provided through the first spring and acts on the sliding plate to support the student, and the pull-up difficulty is reduced. Students with weak strength can smoothly complete pull-up actions by means of auxiliary support of the compression spring, the situation that the students cannot participate in the test due to insufficient strength is reduced, and the test result can more comprehensively reflect the physical conditions of student groups.

The utility model discloses a kind of hydrogen fuel cell test platforms, including platform bottom plate, the top of platform bottom plate is provided with test assembly, the side of platform bottom plate is provided with protection assembly, test assembly includes lifting frame, lifting frame is connected in the top of platform bottom plate, the top of lifting frame is connected with lifting motor, the transmission end of lifting motor is connected with lifting screw rod, the side surface of lifting screw rod is connected with lifting platform, the side of lifting platform is connected with extension rod, extension rod rotatably has bearing plate, lifting platform is provided with telescopic block for limiting bearing plate rotation, the telescopic free end of telescopic block is below bearing plate, and the upper surface of this telescopic free end can be contacted with bearing plate;The utility model does not need to use jaw to hold battery and promote, using the utility model can be suitable for battery of multiple models or sizes to carry out drop test, to reduce test preparation time, while also reduce the negative influence to the accuracy and reliability of test.

The invention discloses a distributed three-phase synchronous wireless speed measuring device for an SF6 circuit breaker, which relates to the field of circuit breakers and comprises a test host and three wireless synchronous speed measuring devices, the test host can receive data from the three wireless synchronous speed measuring devices which are wirelessly synchronous and process the data in real time; the wireless synchronous speed measuring device comprises a speed sensor, a wireless synchronous module, a data acquisition module, a wireless transmission module, an analog signal sensor and a controller. The speed sensor is used for collecting opening and closing speed data of the circuit breaker; the analog signal sensor is used for collecting analog signals from the circuit breaker; the wireless synchronization module is used for returning a clock synchronization instruction; according to the invention, simultaneous measurement of three-phase opening and closing speeds is realized mainly through the wireless synchronization module, the accuracy of speed measurement of the circuit breaker is improved, correct analysis and evaluation of test data by testers are facilitated, and mechanical faults of the circuit breaker can be found more timely and effectively.