64results about How to "Implement test" patented technology

The embodiment of the invention provides new energy automobile motor test equipment, and relates to the technical field of motor test. New energy automobile motor test equipment comprises a butt joint seat and an oil tank oppositely arranged on one side of the butt joint seat, a rotating hole is formed in the circle center of the butt joint seat in a penetrating mode, the output end of a test motor used for testing is arranged in the rotating hole, and a rotating frame is further fixed to the inner ring wall of the rotating hole. Wherein one end of the second rotating shaft is connected with the output end of the test motor, meanwhile, a first rotating shaft is further arranged in the oil tank, blades with adjustable angles are further arranged on the peripheral face of the first rotating shaft, and in the load test, the blades with the initial angle being zero are driven by the first rotating shaft to rotate in oil. Then, the electric push rod pushes the ejector rod to move the movable sleeve, and the angles of the blades are gradually changed. With the increase of the blade angle, the rotation resistance in the oil liquid is correspondingly increased, so that the rotation speed of the first rotation shaft is changed, and the test of different load conditions is realized.

The invention relates to a measuring device and a testing method for the hygrothermal expansion coefficient of a composite material, and the measuring device comprises a middle experiment module for arranging a sample to be tested, a heating device arranged in the middle experiment module, and an analytical balance for measuring the mass of the sample to be tested, a displacement measurement sensor for measuring the vertical displacement of a sample to be measured is arranged below the middle experiment module, the humidity generator is communicated with an inner cavity of the middle experiment module, the humidity sensor is mounted on the middle experiment module, and the detection end of the humidity sensor is positioned in the inner cavity of the middle experiment module. Environmental interference is blocked through physical separation, synchronous and accurate measurement of the swelling amount and mass of the composite material in the target temperature and humidity environment is achieved, the accuracy and reliability of calculation of the hygrothermal expansion coefficient are improved, and the device is convenient to maintain and long in service life.

The utility model discloses a kind of venturi performance detection devices, including box structure, sliding table, fixed block and detection assembly;Box structure is provided with the support plate for supporting sliding table;The fixed block is detachably arranged on sliding table, and fixed block is set to multiple according to different venturi model, and fixed block is provided with the fixed slot for fixing venturi;The sliding table can be connected by sliding with the air inlet plug of detection assembly;The present scheme is provided with detachable fixed block on sliding table, so that it can be fixed with different models of venturi, and test it, and fixed block is provided with the fixed slot matched with this model venturi, so that it can be quickly assembled with venturi, realize the test for different models of venturi, and by sliding, the air inlet plug of detection assembly can be quickly connected, improve detection efficiency.

This disclosure provides a signal testing method, system, device, storage medium, and program product for chips, relating to the field of semiconductor technology. It addresses the technical problem of low chip testing efficiency. The chip has multiple input signals. The signal testing method includes: acquiring all input signals of the device chip; obtaining the time parameters of each device input signal; and generating a result table of the time parameters of all device input signals. By acquiring all input signals of the chip and obtaining the time parameters of each input signal, and obtaining a result table of the time parameters of all input signals, batch testing of the chip's input signals is achieved, improving the design efficiency of circuit designers, facilitating the design of test circuits, and increasing testing efficiency.

The application discloses a kind of fault online injection software and hardware systems.It relates to electronic test technical field.It includes: hardware system and software system, the hardware system includes fault injection system, test bench and measured object simulator, the software system includes fault injection software, test software and teaching software;Fault injection system transmits interface signal data after fault injection to test bench, and test bench is connected with measured object simulator by test cable and switching equipment;Fault injection software is used to control fault injection system to carry out fault injection operation;Test software controls the hardware equipment of test bench to complete the test process of measured object simulator;Teaching software realizes the control to teaching experiment process by calling the function of test software and fault injection software.The application can simulate various complex fault scenes comprehensively, meet the needs of training professionals, so that they can master interface test skills skillfully.

The application discloses a photoelectric coupler performance test method, a test system, an electronic device and a computer readable storage medium. The method comprises the following steps: first, gradually increasing the input voltage applied to the input end of the photoelectric coupler; determining the working voltage of the photoelectric coupler based on the response voltage of the output end of the photoelectric coupler; then, applying the determined working voltage to the input end of the photoelectric coupler; and further obtaining other performance parameters, such as the on response time, the off response time, the response voltage stability and the like. The working voltage and other performance parameters of the photoelectric coupler are tested to further evaluate whether the photoelectric coupler is qualified. Moreover, the other performance parameters are tested under the determined working voltage of the photoelectric coupler, and the test result is more accurate.

The invention relates to a rolling bearing testing device (1) comprising a housing (2) in which a rotating shaft (3) is arranged, the rotating shaft (3) being supported in the housing (2) by a first rolling bearing (41) and a second rolling bearing (42), the rolling bearing testing device (1) further comprising a first connecting device (51) and a second connecting device (52), one part of the first connecting device (51) is fixedly connected relative to the outer ring of the first rolling bearing (41), and the other part of the first connecting device (51) extends out through a first opening in the shell (2); one part of the second connecting device (52) is fixedly connected relative to the outer ring of the second rolling bearing (42), and the other part of the second connecting device (52) extends out through a second opening in the shell (2). The invention also relates to a rolling bearing test system.

The application belongs to the technical field of ferromagnetic part testing, and discloses a magnetic performance testing device and testing method for magnetic materials. The testing device comprises a testing table, which is provided with a plurality of testing holes and a sample placing hole. A proximity sensor and a testing block are arranged in the testing hole, and the testing block is an iron core block. A pressure sensor is arranged above the testing block. The testing device further comprises an analysis system, and data received by the proximity sensor and the pressure sensor is transmitted to the analysis system. The testing method comprises the following steps: placing a sample block to be tested into a limiting sleeve, placing a moving part on a fixed part, aligning the sample placing hole with the testing hole, transmitting data received by the proximity sensor and the pressure sensor to the analysis system, and completing the testing of the magnetic force intensity of the sample block to be tested; rotating the moving part to make the sample placing hole communicate with the testing hole, and judging the magnetic pole of the sample block by the approach or departure of the sample block and a standard magnetic part. The application can complete the testing of the magnetic performance by the attraction between the sample to be tested and the testing block.

The utility model relates to the field of earphone production devices, in particular to a Bluetooth earphone testing device which comprises a table top, a sliding rod and a lead screw are arranged on the table top, the lead screw is driven by a positioning motor to rotate, a sliding plate in threaded connection with the lead screw is arranged on the lead screw, and the sliding rod penetrates through the sliding plate and is in sliding connection with the sliding plate. A simulation mouth is further fixed to the sliding plate, a rotating disc is further arranged on the table top and driven by a rotating motor to rotate, a plurality of fixing devices are further evenly fixed to the rotating disc, each fixing device comprises a fixing plate fixed to the rotating disc, a fixing seat is fixed to the top of each fixing plate, and a fixing hole is formed in each fixing seat. And a push plate is arranged in the fixing hole, an ejector rod is fixed to the bottom of the push plate, the ejector rod penetrates through the fixing base and is connected with the fixing base in a sliding mode, and a positioning block is fixed to the portion, below the fixing base, of the ejector rod. The device can test the pickup function of the earphone by adjusting the distance between the earphone and the simulation mouth.

The utility model discloses a concrete reinforcement hardness testing device, which relates to the technical field of building material detection and comprises a supporting table, a vertical plate is arranged on one side of the upper end face of the supporting table, a reinforcement limiting groove is formed in the top of the vertical plate, and a detection opening is formed in the vertical plate and located on one side of the reinforcement limiting groove. An anti-falling mechanism is arranged on the vertical plate and located on the other side of the reinforcing steel bar limiting groove, a fixing block is arranged on the other side of the upper end face of the supporting table, a first hydraulic telescopic rod is fixed to one side of the fixing block, and a testing assembly is connected to one end of the first hydraulic telescopic rod. According to the utility model, the vertical plate is provided with the reinforcing steel bar limiting groove, reinforcing steel bars of different specifications can be placed and fixed in parallel, the height of the vertical plate is finely adjusted, so that the contact between the testing head and the reinforcing steel bars can be ensured, and the pressure sensor acquires pressure data in real time and transmits the pressure data to the display control module; and the display control module calculates a steel bar hardness value according to a built-in algorithm and displays the steel bar hardness value on the display screen, so that the steel bar hardness is tested.

A kind of semiconductor laser of space navigation is worn out and life test system of examination, including: control machine case, heat dissipation heat sink and current compensation module;When carrying out wear and life test, semiconductor laser is located in the inside of temperature box;Control machine case provides driving current to the input end of semiconductor laser based on preset test current value;At the same time, control machine case carries out real-time temperature compensation to semiconductor laser after the temperature in temperature box is stable, so that the temperature of semiconductor laser is always at preset test temperature;Current compensation module real-time acquisition driving current of the input end of semiconductor laser, and based on the current of acquisition current compensation difference value;Control machine case is based on current compensation difference value compensation driving current currently provided to the input end of semiconductor laser, to avoid the precision of current provided to semiconductor laser by circuit loss influence;Heat dissipation heat sink is used to homogenize the local hot spot of semiconductor laser and carry out heat dissipation.

The embodiment of the invention provides a core particle isolation control circuit, a control method and related equipment, the core particle isolation control circuit is configured at an interconnection port of a target core particle, and the interconnection port comprises a first control interconnection port and an input interconnection port. The isolation control circuit comprises a first control module electrically connected to the first control interconnection interface and a second control module electrically connected to at least one input interconnection interface; the first control module is used for sending an interconnection control signal based on an isolation control signal received by the first control interconnection interface, and when the first control interconnection interface is in a floating state, the first control module is used for sending the interconnection control signal for forbidding transmission of a data signal; and the second control module is used for controlling the input interconnection interface to enable transmission or prohibit transmission of data signals based on the interconnection control signal. According to the scheme, testing of the chip of the 3D packaging technology is achieved.

The application provides a fuzzy test method for multimodal large model application. According to a preset test requirement, a corresponding test mode is selected as a target test mode, and under the target test mode, a test input content is constructed based on a preset prompt word library to test the application model under test. Meanwhile, based on a 3D label mapping algorithm, dimension label processing is performed on the test output content to obtain target test output content including a label dimension. Finally, according to the label dimension of the target test output content, the risk level of the application model under test is determined, so that model test of the application model under test is realized.

The invention provides a weld defect optical detection method and system based on multi-scale feature fusion, and relates to the technical field of material detection.The method comprises the steps that an optical emission module is controlled to emit an initial detection light beam to the surface of a to-be-detected weld material, and an initial optical response signal is obtained; performing multi-scale feature extraction on the response signal, and determining the physical scattering interference degree of the material surface; adaptively generating a dynamic optical modulation strategy comprising a plurality of modulation state parameters based on the interference degree; according to the strategy, emitting a modulation light beam sequence to the surface of a to-be-tested material in sequence, and synchronously obtaining a plurality of target optical response signals reflecting specific optical physical properties; and performing multi-scale feature extraction and multi-dimensional feature fusion operation on the target optical response signal, and outputting a defect analysis conclusion of the to-be-detected material according to the fusion feature distribution matrix. According to the method, optical scattering interference energy caused by surface macroscopic fluctuation is stripped by measuring the optical physical properties of the material.

This utility model discloses an optical fiber coiling device, an optical engine, and an optical module, including a coiling frame and a limiter. The coiling frame has a first surface and a second surface facing each other. The second surface is provided with slots for accommodating or aligning the first and second optical components. The first surface is provided with an arc-shaped coiling channel, a coiling structure, and multiple positioning blocks. The limiter cooperates with the first surface of the coiling frame. After the first optical fiber leading from the slot of the first optical component on the second surface reaches the first surface, it is coiled and limited within the arc-shaped coiling channel. The second optical fiber leading from the slot of the second optical component on the second surface is guided and limited to be led out along a non-coiling path. This utility model achieves effective management and reliable fixation of different optical fiber paths, ensuring the bending radius of the optical fiber. At the same time, the coiling frame integrates an optical component protective cover and auxiliary sealing function, effectively optimizing the internal space of the module, simplifying the assembly process, and improving the reliability and production efficiency of the optical module.

The invention discloses a welding spot testing framework and a preparation process thereof, a packaging body testing system and a program product, and relates to the technical field of electronic packaging, in the welding spot testing framework, at least one testing base body structure is formed on the surface of a testing substrate; the interconnection test layer covering the surfaces of the test substrate and the test matrix structure comprises a welding pad, an interconnection pad and a test pad; the welding spot welding pad is electrically connected with the chip unit through a single welding spot, the interconnection welding pad is electrically connected with the interconnection welding pad on the chip unit, and the test welding pad is electrically connected with external test equipment. Starting from the dimension of single-welding-spot independent testing, the independent performance testing and accurate fault positioning of the single welding spot are supported, the problem that in a traditional daisy chain test, signal coupling and positioning are difficult due to series connection of multiple welding spots is solved, the non-coupling and accurate-positioning electrical performance testing of the single welding spot is achieved, and the testing efficiency is improved. The test precision of the single welding spot in the packaging body is obviously improved, and the yield and reliability of the packaging body are further ensured.

This application discloses an inverter testing system. The inverter testing system includes a main control module, a level conversion module, and a power drive module. The inverter and the power drive module form a test loop. The main control module is configured to control the level conversion module to change its operating state, thereby further adjusting the load inductance, load resistance, or load capacitance of the power drive module. This application enables simulated testing of the inverter by connecting the inverter and the power drive module in series to form a test loop. By adjusting the load inductance in the test loop, the load inductance / resistance / capacitance state of the inverter in a weak power grid is simulated, thus achieving simulated testing of the inverter. Compared to methods that test inverters through wiring, the solution disclosed in this application effectively simplifies the testing process and improves testing efficiency and flexibility.

The utility model relates to skid-mounted sampling equipment. The skid-mounted sampling equipment comprises a skid seat shell, a liquid inlet pipeline, a liquid outlet pipeline, an automatic sampler and a sample collecting tank, the automatic sampler and the sample collecting tank are both arranged in the cavity of the prying seat shell; the liquid inlet pipeline and the liquid outlet pipeline penetrate through the prying seat shell and extend into a cavity of the prying seat shell, one end of the liquid inlet pipeline is suitable for introducing crude oil, the other end of the liquid inlet pipeline is connected with a liquid inlet of the automatic sampler, and one end of the liquid outlet pipeline is connected with a liquid outlet of the automatic sampler; a sample outlet of the automatic sampler is connected with an inlet of the sample collecting tank; the liquid inlet pipeline is provided with a filter, a pump machine and a first bypass pipeline; the filter and the pump machine are sequentially arranged in the flowing direction of crude oil in the liquid inlet pipeline, the first bypass pipeline is communicated with the liquid inlet pipeline, and a manual sampling valve is arranged on the first bypass pipeline; and more than two foundation bolt holes are formed in the bottom of the prying seat shell.

The utility model relates to the technical field of water conservancy project investigation, in particular to a coarse-grained soil compressibility coefficient detection device which comprises a base, an oil cylinder, a seat plate, a counter-force frame, a test cylinder and a conveying assembly. The oil cylinder is mounted on the base; a piston rod of the oil cylinder is connected with the base plate, a first cavity is formed in the base, and the base plate is used for placing a test cylinder; the counter-force frame is installed on the base, and the base plate is arranged right opposite to the counter-force frame. The conveying assembly comprises a frame support, two guide rails and a plurality of pulleys. The guide rails are installed on the top wall of the base, are arranged in parallel and are arranged in the length direction of the base. The plurality of pulleys are mounted on the bottom wall of the support; the test cylinder is placed on the frame support and is used for placing a soil sample, and a second cavity is formed in the frame support; by means of the testing cylinder moving in the length direction of the guide rail, testing of soil samples of different sizes and characteristics can be conveniently achieved, replacement of equipment in different working conditions is avoided, and the detection efficiency of the compressibility coefficient of coarse-grained soil is improved.

The invention discloses a semi-open type air-cooled hydrogen fuel single cell test fixture, which comprises a positive electrode end plate and a negative electrode end plate which are respectively positioned on two sides of a CCM, a positive electrode electricity collection plate and a hydrogen flow field plate are sequentially arranged between the positive electrode end plate and the CCM from outside to inside, and a hydrogen flow channel is formed in the surface of one side, close to the CCM, of the hydrogen flow field plate; a negative electrode electricity collecting plate and an air flow field plate are sequentially arranged between the negative electrode end plate and the CCM from outside to inside, an air flow channel is formed in the surface of the side, close to the CCM, of the air flow field plate, and the outlet end of the air flow channel is connected with the atmosphere. Sealing edge protection films are respectively pasted on two sides of the CCM, a square hole is formed in the relative middle of each sealing edge protection film, and diffusion layer carbon paper is arranged in each square hole. According to the invention, aiming at the fact that the hydrogen fuel air-cooled cell stack has an open mode and a closed mode, the cleanliness of introduced air is different, and the influence of air with different cleanliness on the performance of the hydrogen fuel air-cooled cell stack is tested by controlling the air at the air introduction side.

The invention relates to the technical field of generator excitation simulation, and discloses an RT-LAB-based generator excitation small signal semi-physical simulation method and detection system, and the simulation method comprises the following steps: building a single machine infinite bus simulation system and a generator excitation system model in RT-LAB software; a semi-physical simulation platform loaded with RT-LAB software is electrically connected with the AVR excitation regulator through a conversion card; based on the generator excitation system model established in RT-LAB software, determining the optimal working parameters of the PSS of the AVR excitation regulator; and based on the optimal working parameters of the PSS of the AVR excitation regulator, adjusting the control parameters of the single-machine infinite-bus simulation system and the generator excitation system model so as to evaluate the response performance of the AVR to various generator faults. According to the method, a small signal model is built through RT-LAB, and the test accuracy is ensured by utilizing the real-time capability of the step length of 15 microseconds.

The utility model discloses an MCU chip test experiment device, which relates to the field of MCU chip test experiments and comprises a replaceable MCU chip test circuit, a crystal oscillator circuit, a power supply and switch circuit, an analog electricity / digital electricity switching circuit, an NRST test circuit, a liquid crystal control circuit, a serial port test circuit, an I2C test circuit, an ADC test circuit and a GPIO characteristic test circuit. The output end of the replaceable MCU chip test circuit is electrically connected with the input ends of the crystal oscillator circuit, the power supply and switch circuit, the analog / digital power switching circuit, the NRST test circuit, the serial port test circuit, the I2C test circuit, the ADC test circuit and the GPIO characteristic test circuit. The MCU chip test experiment device is comprehensive in test function, integrates various test circuits, can realize comprehensive test of the MCU chip, is wide in application range, and can test MCU chips of various models due to the design that the MCU chip test circuits can be replaced.

The utility model relates to a kind of test system suitable for current device.It includes standard device, current source and test main piece, test main piece, at least including controller, first conversion processing branch, second conversion processing branch and selection sampling unit, based on the type of the current device to be measured and the current direction state of the current device to be measured and standard device, controller is at least configured first conversion processing branch and standard device connection, and configuration is measured current measuring device and first conversion processing branch or second conversion processing branch adaptive connection, to acquire the required test data by selection sampling unit, and the test data obtained is loaded to controller, to calculate the current measurement accuracy of the current device to be measured by controller.The utility model can effectively realize the high-precision test of current device, improve the adaptive range and test precision of test, improve test speed.

The invention relates to the technical field of electronic equipment, and discloses a power supply filter test method and device and a storage medium, and the method comprises the steps: generating a simulation circuit corresponding to a circuit connection relation according to the circuit connection relation of a power supply module, a power supply filter and an unmanned plane detection countering device, and a circuit topological graph of the power supply filter; testing the simulation circuit to obtain a simulation test result; if the simulation test result meets a first preset condition, obtaining first spectrum data, second spectrum data and noise spectrum data of a test environment; if the comparison result of the first frequency spectrum data and the second frequency spectrum data and the comparison result of the second frequency spectrum data and the noise frequency spectrum data meet a second preset condition, whether the unmanned aerial vehicle countering performance difference of the unmanned aerial vehicle detection countering device and the unmanned aerial vehicle detection performance difference meet requirements or not in the first scene and the second scene is determined; and if the requirements are met, determining that the power filter passes the test. According to the invention, the power supply filter can be accurately and comprehensively tested.

The invention discloses a test device capable of simulating tunnel excavation deformation damage in a complex stress state, and belongs to the technical field of geotechnical engineering tests. The device comprises a base frame, a servo pressure pump, a rolling shaft, various movable loading plates, a sliding rail, a sliding drill bit and the like, wherein a base is connected with a base of a uniaxial testing machine through a positioning pin. The device is modified on the basis of a uniaxial testing machine, and a servo pressure pump and a uniaxial loading head are used for constructing a biaxial stress field; through cooperation of the sliding rail and the sliding drill bit, real-time accurate drilling can be performed on a sample in a stress loading state, and the tunnel excavation unloading process is simulated; a transverse lap joint loading plate is replaced by a direct shear silica gel movable loading plate, and a direct shear test mode can be quickly switched. The device has the advantages of being high in modularization degree, good in function integration degree and the like, can eliminate loading blind areas and collect multi-dimensional parameters such as drilling resistance in real time, and is suitable for tunnel surrounding rock stability and rock mechanical property research.

The invention relates to an artificial intelligence chip and a test access method for the artificial intelligence chip. On the basis of the application, the on-chip function module of the artificial intelligence chip can be provided with a synchronous conversion circuit of which the control logic is simplified compared with the JTAG logic, and the conversion controller of the synchronous conversion circuit can be based on a control state maintained by an external host; a test signal written by an external host through a JTAG interface is controlled to be synchronized to a signal of a signal synchronization register of the synchronous conversion circuit according to a bus clock of the AMBA bus, and data transmission of the test signal in the signal synchronization register to a function register through the AMBA bus in the artificial intelligence chip can also be controlled. Therefore, the on-chip function module of the artificial intelligence chip does not need to have JTAG logic, thereby facilitating reduction of the circuit area of the on-chip function module, and further facilitating reduction of the circuit area of the artificial intelligence chip.

The utility model discloses a portable CAN optical fiber two-channel communication test system, and belongs to the technical field of coal mining machine communication test. According to the utility model, a test signal is sent to the CAN transceiver through the CAN controller, the CAN transceiver converts the test signal into a differential signal, the CAN isolator forwards the differential signal to a CAN bus network to be tested, and the CAN-to-optical fiber isolator converts the differential signal into an optical signal and sends the optical signal to an optical fiber network to be tested. The to-be-tested optical fiber network is connected to the test circuit of the CAN bus through the CAN-to-optical fiber isolator, optical fiber testing is achieved, the utilization rate of the CAN controller is improved, and compared with the mode that a set of optical fiber network testing device is directly added, the cost of the system is lower, and the size of the testing system is smaller. The problem that an existing testing device cannot adapt to the communication environment where the optical fiber and the CAN bus coexist is solved, and the communication testing efficiency of the coal mining machine is improved.

This invention provides an autonomous driving simulation testing system, method, device, and storage medium. The method includes: a virtual module component comprising multiple virtual modules, each corresponding to a functional module of the autonomous driving system under test; a virtual control module for combining a specified virtual module from the virtual module component with the functional module under test of the autonomous driving system, simulating the control flow of the autonomous driving system under test, and acquiring vehicle control commands output by the specified virtual module and / or the functional module under test; and a simulation core module for receiving externally input simulation data and vehicle control commands, updating the simulation model, and publishing state information observed from the simulation model. This invention proposes a lightweight and flexible autonomous driving simulation testing system, allowing for flexible adjustment of the testing method according to testing requirements.

The application provides a kind of welding defect optical detection method and system based on multi-scale feature fusion, it is related to material detection technical field, wherein the method comprises: controlling optical emission module to emit initial probe light beam to the surface of the welding material to be detected, obtains initial optical response signal;The response signal is extracted to multi-scale feature, determine the degree of physical scattering interference of material surface;Adaptive generation based on the interference degree contains a plurality of modulation state parameters Dynamic optical modulation strategy;According to the strategy, the modulation light beam sequence is sequentially emitted to the surface of the material to be tested, and a plurality of target optical response signals reflecting specific optical physical properties are synchronously acquired;The target optical response signal is respectively extracted to multi-scale feature and multi-dimensional feature fusion operation, and the defect analysis conclusion of the material to be tested is output according to the fusion feature distribution matrix.The application determines the optical physical properties of the material, and strips the optical scattering interference energy caused by the surface macroscopic fluctuation.

The invention relates to the technical field of magnetic head production, in particular to a magnetic head testing device which comprises a bottom plate, supporting rings are symmetrically fixed to the two sides of the upper portion of the bottom plate, a fixing ring rotationally connected with the supporting rings is arranged between the two supporting rings, the fixing ring is driven by a rotating motor to rotate, and a plurality of fixing devices are arranged on the fixing ring. The fixing device comprises a fixing groove formed in the surface of a fixing ring, an inserting hole is formed in the bottom of the fixing groove, a connecting column connected with the inserting hole is arranged on the inner wall of the fixing ring, a support is further fixed to the bottom plate, a plurality of testing air cylinders are fixed to the support, a testing plate is further arranged in the fixing ring, and the testing air cylinders are fixed to the testing plate. The tail ends of piston rods of the testing air cylinders are fixed to the testing plate, connecting holes are formed in the positions, corresponding to the connecting columns, of the testing plate, the bottom plate is further provided with a lead screw and a plurality of sliding rods, and a sliding table is further arranged above the bottom plate. The device can test the magnetic head.