873 results about "Life test" patented technology

The invention belongs to the field of material performance testing of mechanical structure strength, and particularly relates to an ultrasonic fatigue experiment monitoring method based on digital twinning. According to the method, on the basis of an ultrasonic fatigue testing machine platform, an ultrasonic fatigue digital twin model of a tested object is established by collecting frequency, temperature, load and other test data, and real-time online monitoring of ultrasonic fatigue and life prediction are carried out in combination with a fatigue life prediction model. Compared with a traditional test method, the method has the advantages that ultrasonic detection data and a digital twinborn model technology are combined, the fatigue life of the material is predicted and evaluated, the test efficiency is improved, the long-life test cost is reduced, and the accuracy and reliability of test data are improved.

A method and system for predicting an effective remaining electrical life of a high-voltage circuit breaker. A circuit breaker electrical life test is carried out and associated data sets of single arcing times and single arcing energy are constructed; a degree of wear of a contact is replaced with accumulated arcing energy to characterize whether a circuit breaker fails; and function fitting is used to construct the relationship between the single arcing energy and the single arcing times; and on this basis, the method for predicting an effective remaining electrical life of a high-voltage circuit breaker is formed. Therefore, the rapid and accurate prediction of a remaining service life of a circuit breaker can be realized only by measuring simple data, thereby providing guarantee for the reliable operation of a power grid.

The invention discloses a life prediction method and device for an accelerated test product and electronic equipment, and the method carries out typical failure mechanism analysis based on fault data, so as to determine a key device and sensitive stress of a target product. And carrying out clustering analysis on the fault data related to the key device, and determining the failure contribution rate of each sensitive stress to the target product. And according to the failure contribution rate corresponding to each sensitive stress, carrying out a multi-stress accelerated life test of the target product. And training the neural network model by adopting test data of the multi-stress accelerated life test. The accelerated test life of a target product under the target stress condition is predicted by using the trained neural network model, life prediction of the accelerated test product is realized, the neural network model is trained by using a multi-stress accelerated life test based on fault physics, the influence of the coupling effect between environmental stresses on the product is emphasized, and the service life prediction of the accelerated test product is realized. Therefore, the model better conforms to the actual application process of the product, and the life prediction precision is improved.

The invention provides a fatigue life testing device for fan blades, and relates to the technical field of material performance tests.The fatigue life testing device comprises a detection bin, a driving mechanism is fixedly installed at the rear end of the detection bin, the detection bin comprises a detection supporting frame, a detection air bin is transversely and rotationally installed in the detection supporting frame, and a detection sliding groove is formed in the top of the detection air bin; air vents are formed in the two sides of the detection air bin, an air inlet is fixedly formed in one of the air vents in the detection air bin, and a plurality of temperature detectors are fixedly installed at the bottom of the detection air bin. Through cooperation of the spherical swing clamp and the adjusting ring, the fatigue life of the fan blade when the fan blade is vibrated in different directions can be detected; according to the invention, the influence of different wind directions on fan blade vibration during working of the fan blade can be simulated through the detection wind bin, so that the fatigue life of the fan in different wind power environments can be detected.

The invention relates to an energy accumulator durability test method and system, and the system comprises an extreme working condition simulation module which can achieve high-voltage, wide-temperature-range and high-frequency dynamic loading; the multi-sensor monitoring network integrates a fiber bragg grating strain sensor, a three-axis acceleration sensor and an acoustic emission sensor to realize collaborative monitoring of strain, vibration and microcracks; the intelligent control and energy recovery module is combined with a fuzzy PID and reinforcement learning algorithm, a magnetorheological fluid generator and a super capacitor bank, so that the control precision and the energy utilization rate are improved; and the data analysis and life evaluation platform accurately predicts the residual life by using an improved Bayesian network model and a real-time health index calculation module. According to the test method, a loading mode is dynamically adjusted through a real-time health index, an energy recovery strategy is optimized, and life early warning is triggered. The invention breaks through the limitation of the traditional test and provides an integrated solution.

The application relates to the technical field of diaphragm testing, in particular to a diaphragm valve diaphragm service life testing device which comprises a box body and further comprises a first pipeline, a second pipeline, a water pump, an intermediate pipeline, a first testing part and a control part, wherein: one end of the second pipeline is in communication with the upper end of the first pipeline, and the other end of the second pipeline is in communication with the intermediate pipeline; the water pump is connected in series on the second pipeline; the first testing part comprises a testing pipeline, one end of the testing pipeline is in communication with the intermediate pipeline, the other end of the testing pipeline is located in the interior of the box body, the testing pipeline is provided with an opening, a clamping piece is arranged on the periphery of the opening, the clamping piece is used for mounting a diaphragm, a circular ring is arranged on the periphery of the clamping piece, a water-sensitive sensor is arranged in the circular ring, a driving part is arranged above the testing pipeline, the driving part is drivingly connected with a tension sensor, and a connecting rod is arranged at the bottom of the tension sensor. The diaphragm deformation life and the diaphragm rupture life can be simultaneously detected, and the comprehensiveness of diaphragm detection is improved.

The utility model discloses a temperature control water nozzle service life testing machine, and relates to the technical field of temperature control water nozzle service life detection. The temperature control water nozzle service life testing machine comprises a testing stand and a constant temperature water nozzle body, a fixing frame is fixed to the rear side of the top of the testing stand, a water supply pipe is embedded in the fixing frame, a water outlet pipe is arranged on the front side of the water supply pipe, a threaded sleeve is rotationally connected to the front end of the water outlet pipe and is in threaded fit with the constant temperature water nozzle body, and a hose is connected between the water supply pipe and the water outlet pipe. A screw rod is obliquely arranged on the inner side of the fixing frame, a movable block is arranged on the screw rod in a threaded mode, an elastic assembly is connected to the bottom of the movable block, a U-shaped frame is connected to the lower end of the elastic assembly, a pressing wheel is rotationally installed on the inner side of the U-shaped frame through a rotating shaft, and the pressing wheel is matched with a hose. By combining the elastic effect of the elastic assembly, the pressing wheel extrudes the hose, the size of the drift diameter of the hose is changed, the purpose of adjusting the water flow speed is achieved, the structure is simple, and use is convenient.

The invention relates to the technical field of spring measurement, and discloses a spring fatigue life test system and a dynamic balance evaluation method, and the system comprises a reference length acquisition module, a dynamic balance state determination module, a working condition spectrum loading module, a stress-strain response data acquisition module, a damage feature extraction module and a life evaluation module. Acquiring a reference length in a free state; step increasing preload is applied, and when it is detected that the deformation rate of the to-be-detected spring is smaller than a set threshold value, it is judged that the to-be-detected spring reaches a dynamic balance state; in a dynamic balance state, loading the to-be-tested spring based on the variable amplitude load time sequence signal, and synchronously acquiring stress-strain response data; identifying the stress characteristics of the to-be-tested spring in the load period; generating a life evaluation report based on the stress characteristics; the accuracy of the fatigue life of the spring can be improved.

The invention relates to the technical field of microswitches, and discloses a microswitch contact life test method and system, and the method comprises the steps: carrying out the contact preheating operation and resistance reference measurement of a microswitch, and obtaining a contact resistance reference value and an initial fluctuation characteristic spectrum; setting a contact degradation monitoring threshold value based on the contact resistance reference value and the initial fluctuation characteristic spectrum; placing the microswitch in a test device for loop test, and recording a contact state data set in each test period; performing weighting processing on the contact state data set according to a test period, and calculating an average resistance fluctuation metric value and a contact degradation evaluation index; and performing dual-mode contact failure detection based on the average resistance fluctuation metric value and the contact degradation evaluation index, and generating target early warning signals of resistance abrupt change type and gradual change type failure modes, thereby improving the identification capability of different types of microswitch contact failure modes, and effectively avoiding sudden faults of equipment caused by contact failure.

The utility model discloses a running-in and service life testing device for an X-ray machine bearing, which comprises a base, a base support and a supporting assembly, one end of the base support is connected with a rotating assembly, the other end of the base support is connected with the base, a first bearing is arranged in the rotating assembly, and the rotating assembly and the base are horizontally arranged; the supporting assembly is transversely arranged at the bottom of the base relative to the rotating assembly and connected with the base. And the base can rotate around the supporting assembly.

The invention relates to the technical field of aero-engine turbine rotor blade fatigue life design, in particular to a multistage turbine rotor blade fatigue life analysis method and device. The method comprises the following steps: based on material fatigue performance data of turbine rotor blades and a three-dimensional finite element model of the turbine rotor blades, obtaining a target test temperature and a target test rotating speed of a multi-stage turbine rotor blade group in a low-cycle fatigue test and a stress coefficient of each assessment part of each stage of turbine rotor blades; and obtaining an actual fatigue test cycle number analysis result of each stage of turbine rotor blade based on the target test temperature and the target test rotating speed of the low cycle fatigue test of the multi-stage turbine rotor blade group and the stress coefficient of each assessment part of each stage of turbine rotor blade. According to the method, the function of carrying out fatigue life test on multiple groups of turbine rotor blades is realized, the test efficiency is effectively improved, the test period is shortened, and the economic cost is reduced.

The invention relates to the technical field of vehicle detection, in particular to an electric vehicle disc brake service life testing device and a use method thereof.In the testing process, a to-be-tested disc brake system is subjected to installation preparation before testing, specifically, a hand brake handle is installed on a brake simulation mechanism, and a brake disc and brake calipers are installed on a disc brake fixing mechanism; then starting a test process, firstly starting a power output mechanism to drive a brake disc to rotate, triggering a brake simulation mechanism and applying pressure to a hand brake handle after a set rotating speed is reached, simulating a brake effect, and setting a time length of a timer to meet the time required by one test process; and entering the next test process after the test process is determined to reach the time through the timer, and disassembling the brake disc to check whether the abrasion loss of the brake disc reaches the standard or not until the test times recorded by the counter reach the test requirements. The device not only can detect a common disc brake system, but also can detect a high-end disc brake system with an ABS function, is efficient and accurate, can improve the safety coefficient of travel, and has great popularization value.

The invention discloses a device and a method for testing transmission efficiency and service life of a miniature lead screw pair, and belongs to the technical field of lead screw pair testing. The device comprises a control system, a base, and a first servo motor, a lead screw pair fixing mechanism, a test workbench, a loading workbench and a second servo motor which are sequentially arranged on the base; the lead screw pair fixing mechanism is used for installing a to-be-tested lead screw pair, one end of the lead screw pair fixing mechanism is connected with the first servo motor through the main shaft unit, and the other end of the lead screw pair fixing mechanism is connected with one end of the test workbench. The test workbench is slidably located on the linear guide rail pair of the base, and the other end of the test workbench is connected with one end of the loading workbench through a force sensor and a force application balance rod; the loading workbench is slidably located on the linear guide rail pair, and the other end of the loading workbench is connected with the second servo motor through the loading lead screw pair. The control system is used for controlling the first servo motor and the second servo motor. The problems of installation of the miniature lead screw pair and testing in a high-speed state are solved.

The invention relates to the technical field of corrugated pipe testing tools, and particularly discloses a corrugated pipe fatigue life testing tool which is characterized in that two sets of testing mechanisms are mounted on a machine body, and each set of testing mechanism comprises a base plate, a top plate, a driving rod and a sealing cover; a first connecting base and a second connecting base are fixed to the bottom disc and the top disc respectively, and the top disc is provided with an air suction hole and connected with an air exhaust hose. The driving rod vertically penetrates through the chassis and is fixedly provided with a third connecting seat; the sealing cover can be in sealed butt joint with the chassis, and a penetrating connector for communicating the air exhaust hose with the vacuum generation system is fixed to the side wall. The two driving rods are in transmission connection through a synchronizing piece, and in the reciprocating movement process, when one corrugated pipe stretches, the other corrugated pipe shrinks. The test tool can be used for testing the corrugated pipe under normal pressure, external vacuum and internal vacuum environments, is suitable for welding the corrugated pipe and ensures the accuracy of test data; the test efficiency is obviously improved, the work is stable, the energy consumption is low, and the test cost is greatly saved; the structure is simple, manufacturing is easy, and the implementation cost is low.

The invention relates to the technical field of service life testing equipment, in particular to welded corrugated pipe lateral deviation testing equipment which comprises a testing platform, a vertical mounting vertical plate and a transverse displacement mechanism are fixedly arranged on the left side and the right side of the upper surface of the testing platform respectively, and a longitudinal displacement mechanism is fixedly arranged on the right side of the vertical mounting vertical plate. Displacement plates are fixedly arranged on the right surface of the displacement end of the longitudinal displacement mechanism and the upper surface of the displacement end of the transverse displacement mechanism, mounting frames are fixedly arranged on the displacement plates, mounting plates are fixedly arranged on the mounting frames, and the opposite side faces of the two mounting plates are connected with the left end and the right end of a corrugated pipe correspondingly; and a locking mechanism for pressing the corrugated pipe flange is fixedly arranged on the mounting plate. Through cooperation of the longitudinal displacement mechanism and the transverse displacement mechanism, accurate displacement adjustment of the corrugated pipe in different directions can be achieved, the test accuracy is ensured, the situation that original equipment can only do axial reciprocating motion is broken through, and a lateral deviation test of the corrugated pipe is achieved.

The invention discloses a device and a method for testing the service life of a welding spot under a thermal-electric-vibration coupling load. The device comprises a thermal cycle device, a vibration device, a computer, a data acquisition instrument and a direct-current power supply. The thermal circulation device is fixed above a vibration table of the vibration device, threaded holes are formed in the vibration table, a circuit board can be fixed on the vibration table through screws, and thermal vibration coupling loading is achieved; a stable power supply is provided for welding spots on a circuit board through a direct-current power supply, so that heat-electricity-vibration coupling loading is realized; the welding spots are connected through the daisy chain, the resistance value of the welding spots is obtained through the data acquisition instrument, the computer is used for monitoring the resistance value, and an alarm value can be set, so that the service life of the welding spots is tested.

The invention belongs to the technical field of fatigue life acceleration test equipment, and particularly relates to an acceleration test device and method for the fatigue life of a rubber corrugated pipe limiting structure, the acceleration test device comprises a base and a heat insulation test box, the bottom end of the heat insulation test box is fixedly connected with the upper surface of the base, and two fixing through holes are formed in the outer wall of one side of the heat insulation test box. The device has multiple environment simulation functions, constructs a composite test environment close to the actual working condition, reflects the influence of different environments on the fatigue life of the limiting structure, improves the representativeness of the fatigue life test result of the rubber corrugated pipe limiting structure, realizes automatic failure judgment through resistance real-time monitoring, does not need manual intervention, and improves the test efficiency. The test convenience is improved, the accuracy of the fatigue life test result of the rubber corrugated pipe limiting structure is further improved, the double-sample synchronous test is realized, the time consumption of the multi-sample test is greatly shortened, and the detection efficiency of the fatigue test is remarkably improved.

The utility model relates to an offshore wind turbine blade accelerated life test bench, which comprises a base, an environment cover is buckled on the upper side of the rear part of the base, a test chamber is formed in the environment cover, and a wind turbine module is arranged in the test chamber; an air inlet is formed in the front side of the environment cover and connected with the outlet end of the air blower through an air pipe. An air outlet is formed in the rear side of the environment cover, and a filter screen is arranged at the air outlet; a sand container is arranged above the air pipe, and a feed opening of the sand container is communicated with the air pipe. The accelerated life test bed for the offshore wind turbine blade is easy to implement, convenient to operate and high in practicability, can perform accelerated life degradation test on the wind turbine blade under the simulated severe offshore environment, and ensures that the test result is close to actual working condition data; therefore, the fatigue and corrosion conditions of the blade of the offshore wind turbine in the severe marine environment can be accurately and reliably analyzed, and a reliable test basis is provided for improving the intelligent operation and maintenance level of the offshore wind turbine.

The invention discloses a ship mechanical and electrical product accelerated life test stress profile generation method and device, a medium and a product, and relates to the field of ship reliability engineering and test.The method comprises the steps that working condition profile data and marine environment stress data of a target ship mechanical and electrical product under a typical navigation task are obtained, and a working condition-environment mapping model is established; according to the designed life target of the target ship mechanical and electrical product, the whole life cycle total damage to the target ship mechanical and electrical product is determined by using the working condition-environment mapping model and the failure physical damage model, an accelerated stress profile is generated by strengthening the stress level with damage equivalence as the principle, an accelerated factor is calculated, and an accelerated life test is performed; and failure data of the failure event is recorded, parameters of the failure physical damage model are calibrated, and the accelerated stress profile is iteratively optimized by using the calibrated failure physical damage model. Accurate and dynamic generation of the accelerated life test stress profile of the ship mechanical and electrical product is realized.

The invention provides a service life prediction method and device for an industrial robot RV speed reducer, and relates to the technical field of speed reducer service life prediction.The method comprises the steps that an acceleration load spectrum is determined according to torque and time history data, and multi-stage loads in the acceleration load spectrum are woven into a program block spectrum according to a preset sequence; all levels of loads in the accelerated load spectrum serve as independent working conditions to be applied to the multi-body dynamic model for dynamic simulation, a load and time history curve set of the key weak component is obtained and input to the cumulative damage model for life calculation, the simulated predicted life is obtained, and a damage cloud picture is generated; taking the program block spectrum as a test loading instruction to carry out an RV speed reducer accelerated life test to obtain a test observation life and a physical failure morphology; if the two are in the corresponding preset deviation range, taking the simulated predicted life as the predicted life of the current RV speed reducer; the problems of long test period, high cost and low reliability of a simulation model are solved.

The utility model relates to the technical field of testing tools, and particularly provides a corrugated pipe service life testing device and equipment. The device comprises a testing cavity, a middle fixing plate, a lower fixing plate, a first driving unit, a first connecting piece, a second connecting piece and a vacuum pump unit, the two ends of the tested corrugated pipe are fixedly connected with the first connecting piece and the second connecting piece respectively, the first connecting piece is fixedly connected with the side, close to the lower fixing plate, of the middle fixing plate, and the second connecting piece is fixedly connected with the side, close to the middle fixing plate, of the lower fixing plate. In the process that the first driving unit drives the middle fixing plate to move close to or away from the lower fixing plate, the tested corrugated pipe is extruded or stretched, so that the actual use working condition of the tested corrugated pipe is simulated; and in the service life testing process, the vacuum pump unit is used for maintaining the interior of the testing cavity at the specified vacuum degree, so that the testing working condition is closer to the actual use working condition of the tested corrugated pipe, and the accuracy of the tested service life of the corrugated pipe is improved.

The utility model discloses a workpiece service life test equipment, including the shell, the shell is separately provided with two and opposite independent equipment cabin and test cabin that distribute upside down in the inside, the equipment cabin one side inner wall is fixedly installed with hydraulic cylinder, the hydraulic cylinder piston rod one end extends to test cabin through the through -hole and is connected fixedly with the lifting plate, the lifting plate bottom surface and test cabin bottom inner wall all are provided with the multidirectional adjustment connecting assembly, and every multidirectional adjustment connecting assembly includes horizontal position adjusting mechanism and adjustable connecting mechanism, through setting multidirectional adjustment connecting assembly, can realize the flexible adjustment of the relative position of spring etc. two ends of cylindrical elastic workpiece, thereby simulating the compression extension fatigue test when the torsion of spring two ends misplacement occurs. This makes the test process closer to the stress state in the actual work of spring, effectively improves the accuracy of test result, and provides more reliable data support for workpiece design and quality evaluation.

The invention discloses a lithium ion battery calendar life evaluation method, which comprises the following steps of: firstly, obtaining test data based on a calendar life test design of an attenuation factor: setting a plurality of temperature stress gradients and SOC stress gradients to carry out a standing test on a battery, and keeping the battery in a set SOC and temperature state in a constant-temperature environment; regularly taking out in a test period to carry out a recoverable capacity test; then constructing a temperature stress attenuation model and an SOC stress attenuation model: according to temperature stress test data, establishing a temperature attenuation rate function based on an Arrhenius formula to obtain the temperature stress attenuation model; establishing an SOC attenuation rate function based on an inverse power law formula according to the SOC stress test data to obtain an SOC stress attenuation model; and finally, model compounding and life evaluation: compounding the temperature stress attenuation model and the SOC stress attenuation model to obtain a battery calendar life evaluation formula, and substituting the battery calendar life evaluation formula into the temperature, SOC and time of the target working condition to calculate the calendar life attenuation rate of the battery under the working condition.

The present invention provides a fatigue life simulation processing method, device and system for a wind turbine test bench, which are applied to the simulation technology field of wind turbine test benches. The method includes: in response to obtaining the static test simulation data of each structural sub-component of the wind turbine test bench stored in advance, calling the fatigue calculation service corresponding to each structural sub-component to monitor the actual load data transmitted from the on-site side of the wind turbine test bench, and based on the monitored actual load data and the static test simulation data, performing fatigue life analysis and evaluation on each structural sub-component in parallel to obtain the fatigue life simulation results of each structural sub-component; sending the fatigue life simulation results of each structural sub-component to the on-site side of the wind turbine test bench for real-time rendering and display. The present invention solves the problems of high requirements for hardware computing resources, low test efficiency and inability to meet the demand for real-time visualization result display during the fatigue life test of the wind turbine test bench.

The utility model discloses a clockwork spring service life testing machine, which relates to the technical field of testing equipment and comprises a frame body, a clockwork spring box is fixedly connected onto the frame body through a plurality of mounting columns, a servo motor and a speed reducer are fixedly mounted on one side of the top of the frame body, and an output end of the servo motor is connected with an input end of the speed reducer. The output end of the speed reducer is fixedly provided with a coupler, the output end of the coupler is fixedly connected with a rotating shaft, the spring is placed in the spring box, a hook on the outer side of the spring is fixedly connected with the outer wall of the spring box, and a hook on the inner side of the spring is fixedly connected with the rotating shaft. In the technical scheme provided by the utility model, through a transmission system consisting of the servo motor, the speed reducer, the coupler and the like, the automatic operation of tightening and loosening the spring is realized, and the test efficiency is greatly improved. And the servo motor is matched with the servo driver, so that the service life of the clockwork spring can be accurately evaluated, and a reasonable replacement period can be conveniently formulated.

The invention relates to a test method for evaluating the service life of a pump laser for hundred milliwatt-level submarine optical communication, and belongs to the technical field of pump lasers for optical communication. The overall thought of the invention is as follows: as the chip is a weak link restricting the service life of the pump laser, the activation energy and the current acceleration factor in a chip service life model are approximately equal to the activation energy and the current acceleration factor in a service life model of a module; therefore, multiple groups of accelerated aging life tests of the chip under different conditions are utilized to replace accelerated aging tests of multiple groups of modules, activation energy and current acceleration factors in the life model are obtained, and the test difficulty and cost are greatly reduced. Besides, a method of simultaneous acceleration under various conditions is adopted in the life model, for example, temperature acceleration and current acceleration are carried out at the same time, the number of samples is increased, and the test time can be reduced from 8000-5000h to 4000-2000h. The test method can greatly save cost and time, and provides a thought for evaluating the service life of the product more conveniently and quickly in the stages of product pre-research, prototype sample and the like.

The invention provides a bearing fatigue life test method and system, and relates to the technical field of bearing testing, and the method comprises the steps: obtaining the application scene characteristics of a target electric tricycle, and obtaining K test conditions; historical bearing fault record mining is carried out in combination with the model of the target electro-tricycle and the K test conditions; the working condition parameters are used as indexes, and the K historical bearing fault record sets are retrieved; traversing K historical bearing fault working condition parameter sets for parameter screening; and performing fatigue life test on the target bearing based on the K test working conditions and the K test working condition parameters, and weighting the obtained fatigue life test results of the K test working conditions to obtain a target fatigue test result. Through the bearing fatigue life testing method and device, the technical problem that the fatigue life testing accuracy is low due to the fact that the performance of the bearing under complex and changeable actual working conditions is difficult to adapt in the prior art can be solved, and the fatigue life testing accuracy of the bearing is improved by testing the fatigue life under different scenes.

The invention discloses a method for constructing an accelerated life test load spectrum of an integral dropper, which comprises the following steps of: respectively constructing a vibration fatigue load spectrum and a pulse alternating current load spectrum according to simulated fatigue load and current data of the integral dropper, and constructing an accelerated life test load spectrum of the integral dropper after the vibration fatigue load spectrum and the pulse alternating current load spectrum are completed. Performing superposition loading by combining the two, deducing a test loading spectrum of the integral dropper according to a Miner damage principle and an electroplastic effect mechanism, and constructing a fatigue-alternating current impact superposition test loading spectrum; according to the construction method, the action mechanisms of current and mechanical stress are effectively combined on the basis of real working conditions, the working state of the dropper can be reflected more accurately, the actual failure mode of the dropper is better met, the constructed fatigue-alternating current impact superimposed loading spectrum can reflect the stress superimposed effect of the dropper in a complex environment, and the application range of the dropper is widened. By more comprehensively simulating the multi-working-condition environment of the dropper, the reliability of the test result is further improved.

The invention provides a Hall sensor test system and method, the system comprises a test device and an upper computer device which are in communication connection, and the test device comprises a control module, and a magnetic field simulation module, a counting module and a timing module which are respectively connected with the control module. The magnetic field simulation module can operate under the control of the control module and flexibly simulate a magnetic field environment acting on the Hall sensor; the counting module and the timing module count multi-dimensional index data for evaluating the service life of the Hall sensor to be tested; and the upper computer device is used for analyzing the index data transmitted by the control module so as to generate a life test report. According to the invention, the control module is connected with each module to realize efficient integrated control of the testing device, a complex working condition is cooperatively simulated through a reasonable connection relationship among the modules to test the Hall sensor, and then analysis of index data, namely remote and intelligent control of the testing process, is realized through the upper computer device. The test efficiency is improved.

The utility model relates to a wire harness fatigue endurance life test bench, and relates to the technical field of wire harness test equipment, the wire harness fatigue endurance life test bench comprises a mounting plate, a clamping bench is fixedly arranged on the mounting plate, a clamping assembly used for clamping a wire harness is arranged on the clamping bench, and a support frame is fixedly arranged on the mounting plate. An adjustable-speed motor is fixedly arranged at the top of the supporting frame, a rotating disc is fixedly arranged on a driving shaft of the adjustable-speed motor, a sliding groove is formed in the rotating disc in the radial direction, a sliding block is arranged in the sliding groove in a sliding mode, a locking assembly is arranged on the sliding block, and a connecting rod is rotationally arranged on the sliding block; a side plate is fixedly arranged on the side wall of the supporting frame, a sleeve block is fixedly arranged on the side plate, a test rod is arranged in the sleeve block in a sliding mode, the top end of the test rod is rotationally connected with the end of the connecting rod, and a sleeve connection ring is fixedly arranged at the bottom end of the test rod. The fatigue durability failure life testing device has the effect of conveniently testing the fatigue durability failure life of the wiring harness in different environments.