21results about How to "Improve testing flexibility" patented technology

The invention relates to the technical field of electric bicycle frame testing, and discloses an electric bicycle frame bearing capacity testing device which is used for testing the bearing capacity of an electric bicycle frame. Comprising an equipment base, a supporting frame arranged above the equipment base, an arc-shaped overturning assembly, a supporting overturning mechanism, a movable downward pressing assembly sliding on the top of the supporting frame, and a control host arranged on one side of the equipment base. A connecting block extends out of the telescopic cylinder in the vertical direction of the connecting groove to be connected with the rotating square block, and the clamping column is moved in the clamping groove to be limited and fixed; when a front end impact resistance test needs to be carried out on the vehicle frame, the connecting block extends out of the telescopic cylinder in the horizontal direction of the connecting groove and is connected with the rotating square block, so that the vehicle frame can be connected with devices with different functions, the vehicle frame can be tested at different angles and postures, and the accuracy and reliability of a test result are improved.

The invention discloses an application system performance testing method based on database synchronization delay. Accurate monitoring and performance analysis of database master-slave synchronization delay in a high-concurrency environment are achieved through dynamic delay estimation and multi-scene testing. Comprising the following steps: deploying a database master-slave synchronization environment on a business system and configuring application software to be tested; installing a performance test tool, dynamically adjusting test parameters, and constructing a synchronous data model of the master and slave databases of the database; monitoring database synchronization delay amount and performance parameters before and after application software deployment in real time through a monitoring system; and compiling a test script, simulating test scenes under normal and abnormal conditions, carrying out dynamic estimation on delay data based on a KPLSF fusion model, analyzing the variation trend of delay amount and performance parameters, and generating a test report. According to the method, high-precision delay monitoring and performance evaluation are provided, and reliable data support and technical guarantee are provided for system tuning, backup strategy optimization and performance improvement of application software.

The invention provides a signal time delay circuit, a time sequence parameter testing method and a time sequence parameter testing system, and relates to the technical field of mobile communication. The signal time delay circuit comprises a plurality of delay circuits, the input ends of all the delay circuits are connected with the same original signal end, the output end of each delay circuit is connected with a unit to be tested, and each delay circuit is used for delaying a homologous original signal input through the original signal end according to a control signal to generate a corresponding delay signal. The starting points of the delay signals output by the plurality of delay circuits are aligned, the processing of the test time is simplified, the delay signals output by the delay circuits are flexibly configured according to the test requirements when the chip is tested, the to-be-tested unit in the chip is directly tested, and the test efficiency is improved. And the test accuracy of the time sequence parameters of each module in the chip is improved.

The invention discloses a hardware-in-the-loop test system and method, and relates to the technical field of automobiles. The system comprises a first upper computer which is connected with a first real-time machine and is used for sending a real-time machine switching instruction to the first real-time machine; the board card box comprises a first board card group, a second board card group, a first switching module and a second switching module, the first switching module is arranged between the first board card group and the second board card group, and the second switching module is arranged between the second board card group and the board card box backboard; the first switching module and the second switching module are used for adjusting the working modes of the first real time and the second real time; the first real-time machine and the second real-time machine are respectively connected with the board card box, the first real-time machine is used for receiving a real-time machine switching instruction, the on-off states of the first switching module and the second switching module are controlled through the first board card group, and the second real-time machine is used for controlling the second board card group; the programmable power supply is a dual-channel programmable power supply and is used for supplying power to the to-be-tested controller.

The utility model relates to a design exhibition stand bearing test device based on visual communication, which belongs to the technical field of bearing test devices, and comprises a support mechanism arranged on a test bench and used for placing an exhibition stand and a bearing test block arranged above the test bench, the support mechanism comprises a hydraulic telescopic rod, a mounting plate and a support seat; a driving mechanism for driving the bearing test block is arranged outside the test board; the driving mechanism comprises a driving turntable, a connecting rod, a driving motor, a transmission structure and an adjusting structure; wherein the adjusting structure is composed of an adjusting seat, a screw rod and a first sliding block, the top end of the connecting rod is hinged to the first sliding block, and the bottom end of the connecting rod is fixedly provided with a universal ball joint rotationally connected with the interior of the bearing test block. According to the design exhibition stand bearing testing device based on visual communication, testing of plates at different heights and states can be achieved, the testing conditions can be conveniently changed by adjusting the height of the hydraulic telescopic rod, and different testing requirements are met.

The utility model discloses an insulation state monitoring circuit testing device and an energy storage system, and belongs to the technical field of insulation monitoring. The insulation state monitoring circuit testing device comprises at least one first module, and the first module comprises a first resistor and a first switch which are connected in series; a first port of the first module is used for being connected with a target interface of a to-be-tested battery pack, and a second port of the first module is used for being connected with a grounding end of the to-be-tested battery pack; and the processing module is electrically connected with each first module and the battery pack to be detected, and the processing module is used for determining the working state corresponding to the insulation state monitoring circuit based on the received actual resistance value corresponding to the first resistor and the target resistance value corresponding to the first resistor. The insulation state monitoring circuit testing device is simple in structure and easy to operate, the cost of testing equipment is reduced, and the testing flexibility is improved.

The invention discloses a method for testing the sensitivity of a cross axis of an accelerometer, which is realized through a double-centrifugal-machine system and comprises the following steps of: firstly, fixing the accelerometer to be tested on a slave centrifugal machine, enabling the slave centrifugal machine to return to zero and be positioned at a zero position, and recording the output U0 of the accelerometer to be tested; thirdly, the output acceleration of the main centrifugal machine is set to be a preset value a, the main centrifugal machine is started, the angle of the auxiliary centrifugal machine is kept at the zero-degree angle, and the output U1 of the accelerometer to be measured at the moment is recorded; then, respectively positioning to 90 degrees, 180 degrees and 270 degrees from the centrifugal machine, and recording outputs U2, U3 and U4 of the to-be-measured accelerometer at each position; calculating the sensitivity ko of the cross axis of the output shaft by using a formula ko = k1 * (U2-U4) / (U1-U3); and finally, re-installing the accelerometer, repeating the steps, and calculating the sensitivity kp of the cross axis of the pendulum shaft. The method can accurately measure the cross axis sensitivity of the accelerometer, improves the measurement efficiency and accuracy, and is suitable for various high-precision accelerometer test scenes.

The invention discloses an annular radiation emission testing device and method, the device comprises an antenna tower with a testing antenna, an annular guide rail, a signal transmission cable and an upper computer, the antenna tower is constructed to be a movable part capable of moving along the guide rail, the antenna tower is connected with the upper computer through the signal transmission cable, and the upper computer is connected with the annular guide rail. The upper computer controls the antenna tower to move on the guide rail; the antenna tower comprises an antenna tower base, a roller, a vertical rod, a cross rod and the test antenna, the antenna tower base moves on the guide rail through the roller, the vertical rod is erected on the antenna tower base, the cross rod is configured to be a height-adjustable part installed on the vertical rod, and the test antenna is arranged on the test antenna. The test antenna is installed on the cross bar. The method is suitable for radiation emission tests of various large-scale products, and the test efficiency is high.

The utility model discloses a six-degree-of-freedom high and low temperature rapid visual angle testing device, which comprises an environmental test box, a six-degree-of-freedom motion platform is arranged in the environmental test box, a clamp is arranged at the top of the six-degree-of-freedom motion platform, and a display screen assembly is clamped by the clamp; a cover shell is installed on the top face of the environment test box to form a darkroom, an optical visual angle detector is installed in the darkroom through a supporting and adjusting mechanism, a laser range finder is further installed in the darkroom, and the optical visual angle detector and the laser range finder are arranged downwards and face a display screen assembly in the environment test box. Therefore, the display screen assembly can be clamped and fixed on the clamp, the display screen assembly is driven to move in the space along with the action of the six-degree-of-freedom motion platform, the temperature in the environment test box can be changed and adjusted at any time and in time according to actual test requirements, and an optical visual angle detector in the darkroom above is matched for visual angle measurement; the overall operation is convenient, the testing flexibility is high, the testing operation efficiency is effectively improved, the mechanism is simplified, and the overall size is small.

The invention discloses a board card testing tool circuit board, and relates to the technical field of board card testing, and the board card testing tool circuit board comprises a first processor circuit, a second processor circuit, an FPGA circuit, and a testing circuit. The first processor circuit is respectively connected with the second processor circuit and the FPGA circuit, the test circuit is connected with the FPGA circuit, and the tested board card is respectively connected with the test circuit and the second processor; the first processor circuit is used for responding to the obtained upper computer instruction, sending a first test instruction to the second processor circuit and sending a second test instruction to the FPGA circuit; the second processor circuit is used for responding to the obtained first test instruction and executing a direct-current voltage acquisition task aiming at the tested board card; the FPGA circuit is used for receiving the test instruction sent by the first processor and driving the test circuit to execute a test task for the tested board card; and the test circuit is used for performing interface detection, output waveform detection, nozzle data line detection and LVDS data path detection on the tested board card.

The invention discloses an ATC test path planning method, which belongs to the technical field of rail transit system testing, and is characterized in that a test range is determined according to test case data, and a path is preliminarily planned according to a set first test rule to obtain a test main path; the method comprises the following steps: respectively acquiring equipment information on a test main path, route information of corresponding equipment and route data of equipment outside the test main path through test case data, respectively constructing an equipment set, an equipment route set and an illegal path set based on the data and the information, and carrying out feature extraction on the sets; the extracted information is subjected to recursion routing according to the set second test rule until recursion is finished to obtain the optimal test path, real-time detection of equipment and real-time planning of the path are not needed, the calculation amount is small, the test environment stability is facilitated, it is guaranteed that the test efficiency is maximized through the minimum number of trailer times, and the test efficiency is remarkably improved.

The utility model discloses a kind of stylus test mechanism, including front and rear movement module, angle swing module and fixed base, the front and rear movement module and angle swing module connection, the front and rear movement module includes front and rear movement drive mechanism, gear and rack, the front and rear movement drive mechanism is connected with gear, drive gear rotation, the gear is engaged with rack, the rack is fixedly connected with angle swing module, the angle swing module is fixedly connected with fixed base, the fixed base is equipped with the fixture for clamping stylus. The utility model is through the structure design of pertinence, effectively solved the core pain point that traditional stylus test device can only be tested vertically, angle single, test scene is limited, in test flexibility, precision reliability and test efficiency three big dimensions realization significant promotion.

The utility model provides a kind of high pressure load resistance shelf and load box.High pressure load resistance shelf includes resistance fixing device and the resistance module installed on resistance fixing device.Resistance module includes at least two groups of resistance branch and at least three groups of output terminal.At least two groups of resistance branch and at least three groups of output terminal are electrically connected, and at least two groups of resistance branch include multiple parallelly connected resistances.At least two groups of resistance branch are connected in series / parallel, to realize multi-grade resistance value output.Compared with prior art, the utility model can obtain multi-grade resistance value by the series connection or parallel connection combination between different resistance branch, and the output terminal outputs different resistance value, meets the test demand of high voltage power supply under different load conditions, and provides more comprehensive test result.

This invention discloses a simulation testing method and system for high-risk scenarios of autonomous driving based on digital twins. The method includes: constructing a three-dimensional continuous traffic environment in a digital twin space based on a real road network topology and multi-source accident data; constructing an accident risk representation object based on the completeness of the multi-source accident data; generating high-risk test scenarios based on the types of accident risk representation objects; converting the high-risk test scenarios into test data corresponding to each functional module in the autonomous driving system, and injecting them into the corresponding functional modules; and outputting high-risk scenario test evaluation results based on the response results of the autonomous driving system. Because this invention constructs a continuous simulation environment by fusing real road network and accident data, and forms accident trigger chains or accident scenario fragments for complete and incomplete accident data respectively, it can comprehensively and accurately recreate various high-risk scenarios, effectively improving the coverage and evaluation accuracy of simulation tests of autonomous driving systems in complex high-risk scenarios.

The utility model discloses a portable power supply system relay protection device general testboard, comprising a power supply air switch, a 220V total AC power supply is introduced into the power supply air switch, 110V and 24V DC power required by a protection device is provided through voltage transformation of a power supply module, the power supply air switch is connected with the power supply module, the power supply module is led to a wiring terminal strip through a power supply expansion terminal, and the wiring terminal strip is connected with the power supply air switch. The wiring terminal strip provides stable direct current for the protection device and provides 24V direct current for the protection device general test board operation box, and the output end of the wiring terminal strip is connected with the input end of the protection device general test board operation box. The output end of the protection device general testboard operation box is connected with the input ends of the opening and closing relay, the tripping relay and the current transmitter. The device can quickly and accurately reflect whether the display condition of the panel of the protection device is normal or not, whether other functional tests are normal or not, and the like.

The invention discloses a non-contact thermal shock high-temperature mechanical testing device, which belongs to the field of high-temperature mechanical performance testing. The device comprises a base, a mechanical experiment module, a middle crossbeam, an outer-cavity upper clamp and a spherical cavity. The spherical cavity is fixed on a guide rail by a cavity bracket, and is provided with an upper pull rod, an upper vacuum bellows, a vacuum gauge, an infrared lamp heating module, a laser heating module, a sample injection door with an observation window, an infrared temperature measurement module, a dynamic testing module, a vacuum exhaust module, an air intake module, a lower pull rod and a lower vacuum bellows. An extensometer, an inner-cavity upper clamp, an inner-cavity lower clamp and a test piece are provided inside the spherical cavity. The device can provide a freely switchable thermal load environment, a vacuum or inert gas environment and a laser thermal shock environment, is easy to assemble and disassemble, and has high flexibility and sealing performance. Dynamic and multi-angle observation can be realized.

The utility model relates to the technical field of test jigs, and discloses a tensile shearing aluminum plate test jig with an adjustable tensile range, which comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with a support frame, the inside of the support frame is fixedly connected with a motor, the output end of the motor is fixedly provided with a gear, and the output end of the gear is fixedly connected with the support frame. A gear is arranged in the supporting frame, a rack is connected to the tooth end of the gear in a meshed mode, an L-shaped plate is fixedly connected to the interior of the supporting frame, the outer wall of the rack is slidably connected to the outer wall of the L-shaped plate, a supporting block is fixedly connected to the outer wall of the rack, a limiting block is fixedly connected to the interior of the supporting frame, and the interior of the supporting block is slidably connected to the outer wall of the limiting block. According to the aluminum plate tensile testing device, the first hydraulic machine drives the pressing plate to clamp and fix an aluminum plate, then the motor drives the gear to rotate so as to drive the rack to slide in the L-shaped plate, and the rack drives the object placing block to move through the supporting block, so that the effect of carrying out tensile testing on aluminum plates with different sizes is achieved, and the testing flexibility is further enhanced.

The utility model discloses an on-load tap-changer main shaft testing device which comprises a machine table, a right-angle frame is installed on one side of the top end of the machine table in a sliding mode, a Y-axis lead screw linear module is installed on the top of the right-angle frame, a first gear motor used for driving the Y-axis lead screw linear module is installed on the outer wall of one side of the right-angle frame, and a second gear motor used for driving the Y-axis lead screw linear module is installed on the outer wall of the other side of the right-angle frame. A fixed plate is installed at the movable end of the Y-axis screw rod linear module, shaft body outer diameter measuring mechanisms are installed on the outer walls of the two sides of the fixed plate correspondingly, U-shaped frames are installed on the two sides of the top end of the machine table correspondingly, opposite clamping structures are installed in the two U-shaped frames correspondingly, a sliding block is installed at the bottom end of one U-shaped frame, and a sliding block is installed at the bottom end of the other U-shaped frame. The two sides of the top end of the machine table are provided with sliding grooves for sliding, a spindle to be measured is arranged between the two U-shaped frames, different positions and different measuring points of the spindle can be measured, and the accuracy of measured values is improved through measurement of the two shaft body outer diameter measuring mechanisms.

The invention discloses a wheel track device for measuring an airfield pavement and a movement method of the wheel track device, and belongs to the technical field of wheel rolling tests. Comprising a limiting fixing frame which comprises four vertically-arranged frame rods and a top plate arranged at the tops of the frame rods; the cylinder is arranged below the top plate; the mounting plate is arranged at the bottom of the frame rod; the proportional valve is arranged at the bottom of the air cylinder and connected to the computer end control system. The main bearing rod is arranged on the lower side of the proportional valve and connected to the air cylinder. The damping spring is arranged on the lower side of the main bearing rod; the pressure sensor is arranged on the lower side of the damping spring and connected to the proportional valve. The two guide sleeves are arranged at the bottom of the mounting plate; the two telescopic mounting rods are arranged in the guide sleeves and are in bolted connection with the mounting plate; the two linear sliding assemblies are oppositely arranged on the two sides of the mounting plate and used for achieving driving of the device. According to the method, the parameters such as the rotating speed and the time are finely adjusted, a scientific basis is provided for pavement design and maintenance, and operation complexity and personal errors are reduced.

The invention discloses a power failure test circuit and system, and belongs to the technical field of hardware testing. The power failure test circuit comprises: a plurality of interfaces having a plurality of bus standards; the plurality of output voltage control circuits are configured to provide a plurality of output voltages, and each output voltage control circuit is correspondingly and electrically connected with each interface; the power supply circuit is electrically connected with each output voltage control circuit and is configured to convert an access power supply into a power supply voltage required by each output voltage control circuit; and the main control chip is electrically connected with each output voltage control circuit and is configured to control each output voltage control circuit to be powered on or powered off according to the target power-on time information and the target power-off time information.

One or more embodiments of the invention disclose a test method, system and related device, and the method comprises the steps: building a universal test processing device and a plurality of test execution nodes which are connected with the test processing device and support different test services, and then obtaining to-be-processed test data through the test processing device, and generating a test task according to the to-be-processed test data, sending the test task to a test execution node corresponding to the test service determined based on the task type of the test task, so that the test execution node executes the test task according to the locally configured test service, and returns a test result to the test processing device. Therefore, while a test general function is provided based on the test processing device, different types of test services can be realized based on the test execution node, the cost is reduced, the development period is shortened, and the test flexibility, universality and test efficiency are improved.