94 results about "Shock test" patented technology

The invention discloses an underwater explosion impact equivalent loading test device and method, and belongs to the technical field of dynamic impact test mechanics, the underwater explosion impact equivalent loading test device comprises a light gas gun system, a combined water shock tube system and a measurement control system, the light gas gun system is a shock wave load loading system of a water shock tube, and the combined water shock tube system is connected with the measurement control system. Comprising a piston, a working table support, a steel pipe, a pressure sensor, a connecting flange, a connecting assembly, a transparent pipe, a double-thread screw assembly, a front panel, a test sample, a rear panel, a working table fixing support and a working table top, and a measurement control system comprises a light gas gun pressurization and emission controller, a high-speed acquisition instrument, a first high-speed camera and a second high-speed camera. The underwater explosion impact equivalent loading test device and the underwater explosion impact equivalent loading test method are compact in structure, convenient to use and suitable for researching underwater dynamic impact protection performance and fluid-solid coupling mechanism of materials or structures in laboratories.

The utility model relates to a kind of multi-plate friction clutch impact test device, the utility model aims at providing a kind of multi-plate friction clutch impact test device, for solving the problem of above-mentioned friction clutch impact test, multi-plate friction clutch is installed in clutch box, four laser emission assemblies are respectively arranged in front, rear, left side and right side of clutch box, laser emission assembly is set towards clutch box, first pinion is fixedly installed on the input shaft of multi-plate friction clutch, two impact components are fixedly connected with the input shaft of multi-plate friction clutch, first driver is fixedly connected with first gear wheel, the output shaft of multi-plate friction clutch is fixedly connected with another two impact components, second pinion is fixedly installed on the output shaft of multi-plate friction clutch, second driver is fixedly connected with second gear wheel.The utility model belongs to the field of friction clutch impact test.

A self-priming pump body and a pressure resistance testing machine therefor. The self-priming pump body comprises a base, a drive electric motor being fixed on the base, a shell being fixed on the base, a drive cover being fixed on one side of the shell, a transmission rod being rotatably arranged in the drive cover, the output end of the drive electric motor being connected to an impeller in the shell by means of the transmission rod, a water inlet being fixed on one side of the shell, and a water outlet being fixed on the shell. The pressure resistance testing machine comprises a machine table, a material-conveying table being fixed on the machine table, two testing tables being fixed on one side of the material-conveying table, material conveying rollers being rotatably arranged in an array on the material-conveying table, two material discharge ports being provided on one side of the material-conveying table, a first cylinder being fixed on one end of each test table, and a circular plate being fixedly arranged at an output end of each first cylinder. In the present invention, the interior of a self-priming pump is tested by means of a first testing piece, which can simulate the impact of impurities in conveyed liquid on the interior of the self-priming pump body; and the exterior of the self-priming pump is tested by means of a second testing piece, which tests the compressive strength of the self-priming pump body, thereby achieving a high test accuracy.

The invention discloses a half-sine impact waveform generator design method based on a bidirectional progressive structure, and relates to the technical field of impact waveform generators and impact tests.The half-sine impact waveform generator design method comprises the following steps that an initial unit cell structure is selected, and topological optimization is conducted on the initial unit cell structure through a bidirectional progressive structure optimization method; and according to the optimized unit cell structure, assembling the semi-sine shock waveform generator by using a genetic algorithm. The design method capable of shortening the model selection time of the half-sinusoidal waveform generator and improving the test efficiency is adopted, the waveform generator capable of generating specific impact response is designed, and the pulse width and the peak value can be adjusted within a larger range.

This utility model belongs to the technical field of drive shaft impact testing benches, specifically an automotive drive shaft impact testing bench, including a body and a base at its upper end. A sliding seat and a fixed seat are respectively installed at both ends of the base. A rotating seat is installed inside the fixed seat, and a transfer ball is fixed to the front end of the rotating seat. A three-jaw chuck is installed inside the front end of the fixed seat via the transfer ball. A ring frame is slidably installed inside the fixed seat, located outside the three-jaw chuck. A conical platform is fixed to the inner side of the front end of the ring frame. This utility model allows drive shafts to be installed in an inclined state, making it easier for a single person to operate long and heavy drive shafts. It also simulates different bumpy conditions during vehicle operation, making the test results closer to reality.

The utility model discloses a transmission main shaft impact resistance testing device which comprises an impact resistance testing device body, the impact resistance testing device body comprises a testing machine base, a base is fixed to the middle of the upper surface of the testing machine base, and a portal frame is fixed to the end of the upper surface of the testing machine base. An impact cylinder is fixed in the middle of the top end of the portal frame; by designing a downward-pressing fixing mechanism, the angle of a downward-pressing clamping plate can be adjusted according to the type of an impact-resistant transmission main shaft, a threaded rod is held by hand to enable the end of the threaded rod to rotate in an internal thread of a connecting plate, a movable adjusting plate is driven to move downwards when the threaded rod is screwed in, and the downward-pressing clamping plate is driven to generate a certain angle and stably support when the movable adjusting plate moves downwards; and then when the downward pressing air cylinder moves to drive the connecting plate and the downward pressing clamping plate to move downwards, the transmission main shaft is fixed, and the transmission main shafts of different models can be clamped and fixed conveniently.

The invention relates to the technical field of cable branch boxes, in particular to a cable branch box and production test equipment thereof.The cable branch box comprises a cabinet body, a hole channel communicated with an inner cavity of the cabinet body is formed in the bottom end of the cabinet body, and a base plate is fixedly arranged on the peripheral side face of the cabinet body and can be matched with special test equipment for diversified detection; the production test equipment comprises a rack, an intermittent impact mechanism and a lifting transposition mechanism are installed at the two ends of the rack respectively, a linkage assembly is installed at the bottom of the rack, the intermittent impact mechanism is composed of a rotation part and an impact part, and the linkage assembly is used for driving the rotation part and the lifting transposition mechanism to rotate periodically. According to the cabinet body impact test device, impact tests can be sequentially carried out on four side surfaces of the cabinet body at different heights, and the change of the pressure state in the cabinet body can be controlled according to the change of the descending height, so that impact tests can be sequentially carried out on the cabinet body under the conditions of normal pressure, high pressure and negative pressure, the purpose of one machine with multiple purposes is achieved, and the applicability of the equipment is improved.

A test assembly and method for performing a shock test of an article includes a pneumatic gun assembly, a Hopkinson bar assembly, a magnetic catch, and a support assembly. The support assembly suspends the article in alignment with the magnetic catch. The magnetic catch retains the article against the Hopkinson bar assembly. The pneumatic gun assembly includes a striker for propagating a shock through the Hopkinson bar assembly into the article.

The utility model discloses a cold and hot shock test box with an operation screen protection structure, which comprises a test box, a low-temperature box and a high-temperature box are arranged on the inner wall of the test box, the low-temperature box is communicated with the high-temperature box, a lifting frame is jointly arranged in the inner cavity of the high-temperature box and the inner cavity of the low-temperature box, a touch screen is arranged on the surface of the test box, and the touch screen is connected with the operation screen protection structure. And a carrier block is fixedly mounted on the surface of the test box through a bolt. According to the touch screen protection device, the clamping block is shifted to be separated from the second gear, the protection curtain is held and pulled to be unwound at the moment, then the protection curtain drives the rotating rod and the second shaft rod to rotate, the second shaft rod drives the second gear and the first shaft rod to rotate through the first gear, then the first shaft rod drives the coil spring to deform, and meanwhile the protection curtain shields the outer side of the touch screen; therefore, the electronic touch screen on the surface of the test box body can be shielded and protected, the situation that the electronic touch screen is damaged due to collision of foreign objects is avoided, and the purpose of protecting the electronic touch screen is improved.

The embodiment of the invention provides a plate-type fuel assembly anti-seismic test bench and method, and relates to the technical field of nuclear reactor safety tests. The invention aims to solve the problems that a plate-type fuel assembly test device is easy to cause distortion of measured data due to self-vibration interference under earthquake excitation and cannot provide an effective verification reference for a numerical model. According to the plate type fuel assembly anti-seismic test bed, through the design of the main body structure of the bottom plate and the water tank, the first-order inherent frequency of the test bed in the no-load state and the full-load state is larger than 60 Hz, and the transverse static rigidity of the test bed is larger than 20 kN / mm. The plate-type fuel assembly anti-seismic test method is implemented by adopting the rack. The test bench has inherent frequency which is far higher than the frequency of a tested piece and the frequency of earthquake excitation, and enough static rigidity and dynamic rigidity, thereby fundamentally eliminating the interference of the vibration of the bench itself on the result of an anti-seismic test, and ensuring the accuracy and reliability of measured data.

The present invention discloses a constant temperature and humidity test chamber. The technical solution thereof mainly comprises a chamber body with a hot chamber and a cold chamber, wherein a storage box is slidably arranged between the hot chamber and the cold chamber. By changing the chamber in which the storage box is located, the ambient temperature of the material can be changed, thereby realizing a hot and cold shock test. At the same time, by changing the structure of the storage box and the setting of the program, a constant temperature and humidity test can also be realized. Thus, multiple functions can be integrated into one device, allowing a device to be used for multiple purposes, thereby increasing the scope of use of the device.

The utility model discloses a hanging basket connecting structure for a hot and cold shock test box, which comprises a test box body, a hot chamber and a cold chamber are arranged in an inner cavity of the test box body, the inner wall of the test box body is fixedly connected with a lifting cylinder through a bolt, the inner cavity of the hot chamber and the inner cavity of the cold chamber are jointly provided with a hanging basket frame, and the lifting cylinder is fixedly connected with the lifting cylinder through a bolt. And the top of the hanging basket frame is fixedly connected with a cylindrical box. The sliding rod is pressed to drive the cylindrical block to move backwards, meanwhile, the sliding rod drives the spring to be compressed through the circular plate, then the hanging basket frame is arranged on the surface of the lifting air cylinder in a sleeving mode, the L-shaped plate penetrates to the position above the hanging basket frame at the moment, then the sliding rod is loosened, and resilience force of the spring drives the cylindrical block to enter an inner cavity of the circular hole through the circular plate and the sliding rod. And then the L-shaped plate and the hanging basket frame are locked, so that the hanging basket and the lifting air cylinder can be quickly disassembled and assembled, the hanging basket can be conveniently maintained and replaced subsequently, and the purpose of improving the convenience of subsequent use and maintenance is achieved.

The subject disclosure relates to a system and method for testing units-under-test (UUT) with a thermal shock. The thermal shock testing system can include a chamber having an inlet and an outlet, the chamber being configured to provide a thermal shock to a unit-under-test (UUT), a pump configured to fluidly connect to the inlet of the chamber and direct a temperature controlled liquid through a channel embedded in the chamber, and a boiler and a chiller fluidly connected to the pump, the temperature of the liquid being controlled by at least one valve configured to alternatively direct hot or cold fluid to the inlet of the chamber.

The invention relates to a distributed underwater explosion impact test device. The device comprises a water tank, a distributed mounting rack, a detonation assembly, a sample fixing assembly and a counterweight assembly, the distributed mounting frame is arranged in the water pool and is provided with a plurality of connecting ends which are circumferentially arranged along the central axis of the distributed mounting frame, and each connecting end can move in the direction close to or away from the central axis of the distributed mounting frame; the detonating assembly is arranged in the middle of the multiple connecting ends, and the detonating assembly is connected with the bottom of the distributed mounting frame; the sample fixing assembly is provided with a plurality of sample fixing ends for fixing samples, and the plurality of sample fixing ends are connected with the plurality of connecting ends of the distributed mounting rack; the counterweight assembly is detachably arranged on the distributed mounting frame; compared with a traditional single-station and multi-time detonation test mode, the explosion pool starting frequency and explosive consumption are remarkably reduced, the test efficiency is improved, and the comprehensive test cost is reduced.

1. The name of this design product: Ice Water Impact Test Chamber. 2. Purpose of this design product: an ice water impact test chamber that combines a high temperature chamber and a low temperature chamber. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the key points of the design: main view.

The utility model discloses cold shock test equipment, which belongs to the technical field of cold shock tests and comprises a test box, two blowing mechanisms are arranged at the top of the test box, a cooling mechanism is arranged on the test box, a plurality of placing racks are arranged in an inner cavity of the test box, and a plurality of self-locking trundles are fixedly mounted on the bottom surface of the test box. According to the cold impact test device, the self-locking trundles at the bottom of the test box can be used for driving the device to move so that the device can move to different positions to carry out a cold impact test on a sample, and the outer supporting frame, the outer telescopic frame, the inner telescopic frame, the side plate, the side door, the mounting seat and the hydraulic cylinder are matched for use, and the hydraulic cylinder can be used for driving the side plate to move towards the outer side; the outer telescopic frame and the inner telescopic frame extend outwards, so that the size of a sample placement space in the inner cavity of the test box is increased, placement and cold impact test of materials with different sizes are realized, and the practicability of the cold impact test equipment is improved.

The invention belongs to the technical field of temperature tests, and particularly relates to a temperature impact test box which comprises a test box body, a connecting frame comprises a rotating shaft, two connecting rods are fixedly installed at the upper end of the rotating shaft, a limiting plate matched with a corner column is fixedly installed on the two connecting rods jointly, and a sealing plate is connected into the limiting plate in an up-down sliding mode. A sliding groove in sliding connection with the sealing plate is formed in the limiting plate, a first spring is installed between the interior of the sliding groove and the sealing plate, the two ends of the sealing plate extend out of the left side and the right side to be fixedly provided with abutting rods, and a locking piece is installed between the upper limiting plate and the upper mounting plate. According to the invention, a test article can be thrown in a previous temperature environment when the hanging basket moves up and down, so that the test effect is prevented from being influenced by temperature difference caused by communication of the high-temperature cavity and the low-temperature cavity when the hanging basket moves up and down, and meanwhile, the hanging basket can be opened through the connecting frame while the hanging basket can play a sealing role; therefore, the test articles are convenient to take.

The present application relates to a controllable waveform characteristic shock wave test device and a shock test method, comprising a gas storage tank and a gas outlet pipe, the gas storage tank defines one or more gas storage cavities, the gas storage cavities are used for storing high-pressure gas, the gas outlet pipe defines a gas outlet passage, the outlet of the gas outlet passage is used for connecting the measured object, the shock wave test device further comprises a plurality of shunt pipes, a plurality of electromagnetic valves and a main controller, the plurality of shunt pipes are connected in parallel, the inlets of the plurality of shunt pipes are connected to the outlets of the gas storage cavities, the outlets of the plurality of shunt pipes are connected to the outlet of the same gas outlet passage, the electromagnetic valves correspond to the shunt pipes one by one, the electromagnetic valves are used for controlling the on-off of the corresponding shunt pipes, and the main controller is used for controlling the opening and closing of the plurality of electromagnetic valves. The present application adjusts and controls the number and time of different electromagnetic valves to be turned on to adjust and control the waveform diagram of the shock wave, so as to simulate the shock wave of different scenes, and to detect the protection capability of the anti-explosion valve under the action of the shock wave of different waveforms.

The utility model provides an impact test device for a thermal management system of an automobile seat, relates to the field of vehicle equipment, and solves the problem that the impact test of a seat body and a backrest needs two pieces of equipment and the test efficiency is low. The device comprises a guide seat, a driving mechanism, an arm beam, a falling table assembly, a swing frame, a first weight and a second weight assembly, the arm beam is movably arranged on the guide seat, and the driving mechanism is in transmission connection with the arm beam and used for driving the arm beam to reciprocate in the vertical direction of the guide seat; the object falling table assembly is fixed at one end of the arm beam, the object falling table assembly can support the first weight and can release the first weight, and the first weight is used for impacting the first to-be-tested part; the swing frame is fixed at the other end of the arm beam, the swing frame can fix or release the second weight assembly, and the second weight assembly can swing and impact the other part to be tested after being released; the defect that the seat body and the backrest need two devices in the impact test can be overcome, the occupied area is reduced, the test efficiency is improved, and the personnel safety is guaranteed.

The present application relates to a kind of high flux BGA interconnection structure impact test method and system.It includes preparation at least one BGA interconnection passage containing high flux BGA test structure, high flux BGA test structure is assembled on mechanical impact test bench, and each BGA interconnection passage in high flux BGA test structure is connected with in-situ monitoring device respectively;Impact test is carried out to high flux BGA test structure using mechanical impact test bench, and the health status of BGA test body in the connected BGA interconnection passage during impact test is monitored using in-situ monitoring device;Based on the impact load state of each BGA interconnection passage during impact test and the monitoring state during impact test, the impact resistance of the BGA test body in the BGA interconnection passage is determined.The present application can carry out efficient mechanical impact reliability evaluation to BGA, and realize in-situ resistance monitoring during test process.

A striking device includes a striking section that strikes a test object. This striking device is characterized by having: a vertically long intermediate link that is coupled to the striking section and can move in a state of maintaining a vertical orientation; and a laterally long driving link and a driven link that is driven by the driving link, one end of each of the driving link and the driven link being rotatably coupled to the intermediate link, and the driving link and the driven link being parallel to each other, in that the other end side of each of the driving link and the driven link rotates about a rotational shaft that is provided in a perpendicular direction to a vertical line at different positions on the same vertical line.

The utility model discloses an adjustable vibration impact test fixing device which comprises a base, the whole base is of a cross-shaped structure, first limiting rods with the adjustable distance are symmetrically arranged at the two ends of the top of each first limiting rod, and second limiting rods with the adjustable distance are symmetrically arranged at the two ends, perpendicular to the first limiting rods, of the top of the base. The top ends of the first limiting rod and the second limiting rod are connected with limiting plates, the limiting plates are slidably arranged on the outer sides of the first limiting rod and the second limiting rod, the two adjacent ends of the base are fixedly connected with vertical plates with length scales, and the ends of the limiting plates are slidably connected to the surfaces of the vertical plates. According to the fixing device, the distance between the limiting rods at the two corresponding ends of the base can be adjusted, and the limiting rods at the two corresponding ends are always in symmetrical positions, so that the external stable positioning of the to-be-tested part can be ensured, the to-be-tested part is positioned at the central position of the base, the subsequent accurate testing of the tested part of the part is facilitated, and the testing efficiency is improved. And the accuracy of vibration impact is ensured.

The utility model discloses an impact test device for a motor piezoresistor, which comprises a main power supply and a first branch power supply, the first branch power supply is variable voltage, and the first branch comprises a first direct current anode branch and a first direct current cathode branch. A capacitor module is connected in parallel between the first direct current anode branch and the first direct current cathode branch, a voltage display is connected in parallel between the first branch power supply and the capacitor module, and the voltage display is used for acquiring and recording reverse voltage value changes of a piezoresistor located on the converter. The time relay is used for controlling the time interval of switching-on and switching-off of the first branch power supply; the output end A of the first direct current anode branch is connected with the input end B of the first direct current cathode branch; the number of the output end A and the input end B is respectively one, and the output end A and the input end B are respectively and electrically connected with commutator segments of the converter. The time relay outputs voltages to the commutator segments according to different discharge gaps and different voltages, and then the internal resistance of the piezoresistor is obtained.

The invention discloses a variable temperature zone temperature impact test box which comprises a rotating device and a plurality of box bodies placed on the rotating device, the box bodies are evenly arranged along a rotating disc of the rotating device, each box body is provided with an air opening, a high-temperature generator and a low-temperature generator are arranged on the two sides of the rotating device, and the box bodies rotate along with the rotating device. The high-temperature generator and the low-temperature generator are selectively and detachably connected with the air openings of the box body through the air pipes, so that a high-temperature-normal-temperature-low-temperature three-temperature area and / or a high-temperature-low-temperature two-temperature area can be constructed, and switching between the three-temperature area and the two-temperature area is achieved. Three-temperature-zone and two-temperature-zone cyclic tests are realized on the same temperature impact test box, and the high-temperature generator and the low-temperature generator can be selectively combined and detachably connected with the box body through the air pipes according to requirements, so that the test requirements of a complex temperature change scene of a test article are met; during testing, synchronous operation of a high-temperature area and a low-temperature area is achieved in second-temperature-area testing and third-temperature-area testing, and the load and energy consumption of equipment are greatly reduced.

The utility model relates to the field of impact test especially relates to a shock test device for heat insulation glass manufacturing, including support frame, both sides outer walls both ends of support frame all are established with moving groove, and support frame is located the movable connection with bidirectional screw rod at moving groove center place, both ends outer walls of bidirectional screw rod all are threaded connection with screw block, and install the support structure between screw block, and the outer wall of one end of support frame is equipped with adjusting structure, support structure includes the sliding plate of installation between screw block place outer wall, the sliding block of sliding connection in the top outer wall of sliding plate and install the support pad in the top outer wall of sliding block. The utility model bidirectional screw rod rotates and drives screw block and sliding plate to be close to each other, adjust the interval between the support pad on two sliding plates, push the sliding block and move on the sliding plate through the support pad, adjust the interval between two support pads on the sliding plate, be convenient for adjusting according to the glass size, be convenient for supporting glass.

The utility model discloses a two-box type temperature shock test box which is characterized in that a lifting basket is arranged in an inner cavity of a box body, the top of the lifting basket is connected with a plurality of guide rods which are vertically and uniformly arranged, the top ends of the guide rods extend upwards, penetrate out of the top surface of the box body and are connected with a cross beam above the box body, and two ends of the cross beam are connected with two electric cylinders which are symmetrically arranged on two sides of the box body; and screw rods of the two electric cylinders synchronously and vertically move up and down. The lead screws of the two electric cylinders synchronously and vertically move up and down, the lead screws drive the cross beam to do lifting motion above the box body, the cross beam is always kept horizontal, the guide rods at the bottom of the cross beam are evenly arranged, and it is guaranteed that the lifting basket is stressed stably, does not shake left and right or front and back and can stably ascend and descend.

The present invention discloses a dynamic and static water test device and a test method for high-temperature and high-pressure equipment, comprising a test piece, a natural circulation loop and a valve body assembly; the input end and the output end of the natural circulation loop are connected to the input end and the output end of the test piece through the valve body assembly; the natural circulation loop comprises a first pipe connected to the test piece, a heating pipe connected to the first pipe, and a cooling pipe connected to the first pipe; a second pipe is connected to the heating pipe and the cooling pipe; the present invention sets up multiple natural circulation loops and multiple groups of test pieces, and controls the connection relationship between the natural circulation loops and the test pieces through the valve body assembly, realizes hot and cold shock tests through mutually isolated natural circulation loops, realizes cyclic tests of multiple groups of test pieces by adjusting the on and off of the natural circulation loops, and realizes natural circulation by utilizing the pressure head generated by the heating pipe and the cooling pipe in the natural circulation loop, thereby solving the problems of high energy consumption, poor high temperature resistance and high cost.

The utility model relates to a detection test device for a slide rail type special door, which belongs to the technical field of engineering detection equipment and comprises a detection test box. The device has the beneficial effects that the driving source of the bidirectional screw rod is automatically controlled by the PLC to start, so that the two sliding seats can be driven to move in the same direction or opposite directions, and the distance between the two hydraulic cylinders and components below the two hydraulic cylinders can be adjusted; therefore, the impact position of the impact test head can be adjusted according to the detection test requirement, the hydraulic cylinder pressurization mode is adopted to simulate the change condition of pressure borne by the door leaf under the actual working condition, a high-precision sensor is arranged to collect force value data in real time, and a PLC and a touch screen display terminal are used for displaying the force value data in real time. The system is in charge of coordinating cooperative operation of all mechanisms and visually presenting a test result through a graphical interface, through automatic control, the manual operation space can be reduced, and the detection efficiency of the sliding rail type special door body is improved.

The present invention relates to the field of equipment testing technology, and specifically to a buffer shock test device and method. It comprises a support body, a spring 1 and a telescopic member are installed on the top of the support body, a pressure sensor is installed at the connection between the top of the support body and the spring 1; a positioning mechanism is fixedly installed on the telescopic end of the telescopic member; a lifting mechanism is installed on the top of the support body, an impact member is connected to the free end of the lifting mechanism, and the lifting mechanism is used to pull the impact member to a specified height; the positioning mechanism is used to position and adjust the initial position of the impact member, and the spring 1 is located directly above the impact member; the bottom of the support body is used to place the buffer. The buffer shock test device can adjust the impact speed and impact acceleration of the impact member by changing the external force applied to the impact member and the mass of the impact member, thereby simulating extreme working conditions such as high-speed impact and multiple impacts, and verifying the performance redundancy of the buffer under extreme conditions.

The invention discloses a mechanical impact test condition determination method suitable for a large-size CMOS image sensor, and the method comprises the steps: analyzing the safety factor distribution of the sensor under different impact magnitudes through finite element simulation, determining a critical impact magnitude based on the criterion that the overall safety factor of a structure is greater than or equal to 1 for the first time, and further formulating a personalized test condition; the problem of excessive test caused by the fact that an existing microelectronic device test method and program standard are not suitable for the impact test of the large-size CMOS image sensor is solved, and the method has the advantages of being scientific, accurate and economical.