A laser gyro circuit testing device and method

Abstract

A kind of laser gyro circuit testing device and method, the upper surface of the base box of the base assembly of the device is connected with clamping mechanism, high voltage attenuator and data acquisition module;Electric connector is installed on the side of base box body.The wire harness of test tool circuit board, high voltage attenuator, data acquisition module is electrically connected in the cavity of base box body through wire hole;To be measured circuit board is fixed on the upper portion of test tool circuit board by clamping mechanism, to be measured circuit board and test tool circuit board are electrically connected, tool circuit board is electrically connected with laser gyro body and laser gyro test station through electric connector, part of signal terminal of tool circuit board is also electrically connected with data acquisition module, wherein high voltage signal needs to be attenuated by high voltage attenuator before being electrically connected with data acquisition module;Laser gyro test station and computer workstation are electrically connected, label printer and computer workstation are electrically connected.The present application has high testing efficiency, low cost, and is convenient for recording test results.

Description

Technical Field

[0001] This invention belongs to the field of laser gyroscope circuit testing and processing technology, specifically relating to a laser gyroscope circuit testing device and method. Background Technology

[0002] Currently, laser gyroscopes possess advantages such as small size, high precision, and good stability, making them one of the most widely used inertial components. The laser gyroscope circuit board is the core component of the laser gyroscope, and its reliability is one of the key factors determining product quality.

[0003] Currently, a series of tests are required on the key points and parameters of the laser gyroscope circuit board. Only circuit boards that pass the tests strictly according to the process can proceed to the next stage. Traditional circuit testing mostly relies on manual measurement and recording, resulting in low production efficiency and high time and labor costs. Therefore, it is necessary to develop a laser gyroscope circuit testing technology solution. Summary of the Invention

[0004] Therefore, the present invention provides a laser gyroscope circuit testing device and method, which solves the problems of low efficiency, high cost and inconvenience of recording in traditional manual testing.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a laser gyroscope circuit testing device, comprising a base assembly, a clamping mechanism, a high-voltage attenuator, a data acquisition module, a test fixture circuit board, a circuit board under test, a laser gyroscope body, a laser gyroscope test bench, a computer workstation, and a label printer.

[0006] The base assembly includes a base box and an electrical connector; the interior of the base box has a cavity, and the upper surface of the base box is connected to the clamping mechanism, the high voltage attenuator and the data acquisition module; the upper surface of the base box is provided with a plurality of wire passing holes, and the wiring harnesses of the test fixture circuit board, the high voltage attenuator and the data acquisition module are electrically connected in the cavity of the base box through the wire passing holes.

[0007] The circuit board under test (TBD) is fixed to the upper part of the test fixture circuit board by the clamping mechanism. The TBD and the test fixture circuit board are electrically connected. The test fixture circuit board is electrically connected to the laser gyroscope body and the laser gyroscope test stage via the electrical connector. Furthermore, the test fixture circuit board is also electrically connected to the data acquisition module. The high-voltage signal needs to pass through the high-voltage attenuator before being electrically connected to the data acquisition module. The high-voltage attenuator is used to attenuate the high-voltage signal to the voltage measurement range of the data acquisition module. The data acquisition module is used to acquire various voltage signals from the TBD circuit board.

[0008] The electrical connector is connected to the side of the base box. The laser gyroscope body, the tooling circuit board, and the laser gyroscope test stand are connected through the electrical connector. The laser gyroscope test stand and the computer workstation are electrically connected. The computer workstation is used to analyze and process the test data of the laser gyroscope circuit. The label printer is electrically connected to the computer workstation. The label printer is used to print the pass or fail labels of the circuit board under test.

[0009] As a preferred embodiment of the laser gyroscope circuit testing device, the clamping mechanism includes a fixed clamp, a movable clamp, and a limiting baffle; the test fixture circuit board is installed between the fixed clamp and the movable clamp, and the limiting baffle is disposed above the movable clamp, the limiting baffle being used to limit the test fixture circuit board and the circuit board under test.

[0010] As a preferred embodiment of the laser gyroscope circuit testing device, the fixing clamp includes a mounting base; the mounting base is provided with two oblong mounting holes, and the mounting base is connected to a set of threaded holes in the base box via bolts.

[0011] As a preferred embodiment of the laser gyroscope circuit testing device, the fixing clamp further includes a clamping part, which has a lower slot and an upper slot. The lower slot is used to install the test fixture circuit board with a spring probe, and the upper slot is used to clamp the circuit board to be tested.

[0012] As a preferred embodiment of the laser gyroscope circuit testing device, the movable clamp includes a clamp seat, a slider, and a guide rod; the clamp seat is fastened to the base box by a set of bolts, the clamp seat is provided with a first long slot for clamping the test fixture circuit board, and the clamp seat is also provided with an L-shaped limiting boss and a guide support boss.

[0013] The test fixture circuit board is clamped between the first elongated slot and the lower slot; the front end of the L-shaped limiting boss limits the stroke of the slider to prevent the guide rod from sliding out and falling off from the guide hole of the guide support boss when the slider is not clamping the circuit board to be tested.

[0014] As a preferred embodiment of the laser gyroscope circuit testing device, the front end face of the slider is provided with a second elongated slot, which is used to limit the position of the circuit board under test held in the slider.

[0015] The slider has a long groove on its side, which is used to increase the friction between fingers during manual operation.

[0016] As a preferred embodiment of the laser gyroscope circuit testing device, the slider has a threaded hole in the middle, and the guide rod is fastened to the slider by the thread;

[0017] A spring is installed on the guide rod. One end of the spring acts on the rear end face of the slider, and the other end of the spring acts on the front end face of the guide support boss. The spring is in a compressed state.

[0018] As a preferred embodiment of the laser gyroscope circuit testing device, the movable clamp further includes a limiting screw, which is located at the lower edge of the junction between the guide support boss and the end of the guide rod; the limiting screw is threaded onto the base box, and the limiting screw limits the radial direction of the end of the guide rod.

[0019] As a preferred embodiment of the laser gyroscope circuit testing device, the test fixture circuit board includes a fixture circuit board body and a spring pin; the fixture circuit board body is installed between the lower slot of the fixed clamp and the first elongated slot of the movable clamp;

[0020] The spring pin is connected to the terminal pad on the tooling circuit board via printed wires. The wires soldered to the terminal pads pass through the wire holes on the upper surface of the base box and are interconnected with the data acquisition module, the electrical connector and the high voltage attenuator in the cavity of the base box.

[0021] This invention also provides a laser gyroscope circuit testing method, employing the aforementioned laser gyroscope circuit testing device, comprising:

[0022] The voltage signal on the circuit board under test is converted by the data acquisition module (A / D) and sent to the host computer of the computer workstation. The host computer software of the computer workstation checks the data after A / D conversion and determines whether there is a short circuit, open circuit or other preset fault type in the circuit under test of the circuit board under test.

[0023] If a short circuit is found in the circuit under test, immediately disconnect the power supply to the circuit board under test and print a "Power Short Circuit Fault" label.

[0024] If there is no short circuit in the circuit under test, the test mode is entered, and the host computer software of the computer workstation records the test data and generates a test data file.

[0025] If the circuit under test is working properly, a test pass message will be displayed.

[0026] If the circuit under test malfunctions, it enters the fault self-diagnosis mode, compares the data of the malfunction with the fault database, provides the fault location information, and prints a fault label to be affixed to the malfunctioning circuit board under test.

[0027] This invention has the following advantages: It comprises a base assembly, a clamping mechanism, a high-voltage attenuator, a data acquisition module, a test fixture circuit board, a circuit board under test, a laser gyroscope body, a laser gyroscope test bench, a computer workstation, and a label printer. The base assembly includes a base housing and an electrical connector. The base housing has an internal cavity, and the clamping mechanism, high-voltage attenuator, and data acquisition module are connected to the upper surface of the base housing. The upper surface of the base housing has several wire holes through which the wiring harnesses of the test fixture circuit board, high-voltage attenuator, and data acquisition module are electrically connected within the cavity of the base housing. The circuit board under test is fixed to the upper part of the test fixture circuit board by the clamping mechanism, and the circuit board under test and the test fixture circuit board are electrically connected. The tooling circuit board is electrically connected to the laser gyroscope body and the laser gyroscope test stand via an electrical connector. The high-voltage signal on the tooling circuit board is also electrically connected to a high-voltage attenuator. The high-voltage attenuator is used to attenuate the high-voltage signal to the voltage measurement range of the data acquisition module. The data acquisition module is used to acquire the voltage signal of the circuit board under test. An electrical connector is connected to the side of the base housing. The tooling circuit board, the laser gyroscope body, and the laser gyroscope test stand are connected via electrical connectors. The laser gyroscope test stand is electrically connected to a computer workstation, which is used to analyze and process the laser gyroscope circuit test data. A label printer is electrically connected to the computer workstation and is used to print pass or fail labels on the circuit board under test. This invention offers high testing efficiency, low cost, and convenient recording of test results. Attached Figure Description

[0028] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the overall structure of the laser gyroscope circuit testing device provided in this embodiment of the invention;

[0030] Figure 2 This is a structural block diagram of the laser gyroscope circuit testing device provided in an embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the clamping mechanism of the laser gyroscope circuit testing device provided in an embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the clamping mechanism fixing clamp of the laser gyroscope circuit testing device provided in this embodiment of the invention;

[0033] Figure 5This is a schematic diagram of the movable clamp of the laser gyroscope circuit testing device provided in an embodiment of the present invention;

[0034] Figure 6 This is a schematic diagram of the test fixture circuit board of the laser gyroscope circuit test device provided in this embodiment of the invention;

[0035] Figure 7 This is a schematic diagram of the laser gyroscope circuit testing method provided in an embodiment of the present invention.

[0036] In the diagram, 10 is the base assembly; 20 is the clamping mechanism; 30 is the high-voltage attenuator; 40 is the data acquisition module; 51 is the test fixture circuit board; 52 is the circuit board under test; 60 is the laser gyroscope body; 70 is the laser gyroscope test stand; 80 is the computer workstation; 90 is the label printer; 11 is the base box; 12 is the electrical connector; 21 is the fixing clamp; 22 is the movable clamp; 23 is the limit baffle; 211 is the mounting base; 212 is the mounting bracket. 213. Clamping part; 214. Lower slot; 215. Upper slot; 216. Mounting hole; 221. Clamping seat; 222. Slider; 223. Guide rod; 224. Spring component; 225. Limiting screw; 231. First long slot; 232. L-shaped limiting boss; 233. Guide support boss; 234. Guide hole; 235. Second long slot; 236. Long groove; 511. Tooling circuit board body; 512. Spring pin. Detailed Implementation

[0037] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] See Figure 1 , Figure 2 and Figure 3 This invention provides a laser gyroscope circuit testing device, including a base assembly 10, a clamping mechanism 20, a high voltage attenuator 30, a data acquisition module 40, a test fixture circuit board 51, a circuit board under test 52, a laser gyroscope body 60, a laser gyroscope test stand 70, a computer workstation 80, and a label printer 90.

[0039] The base assembly 10 includes a base box 11 and an electrical connector 12. The base box 11 has a cavity inside, and the upper surface of the base box 11 is connected to a clamping mechanism 20, a high voltage attenuator 30, and a data acquisition module 40. The upper surface of the base box 11 is provided with several wire holes, and the wire harnesses of the test fixture circuit board 51, the high voltage attenuator 30, and the data acquisition module 40 are electrically connected in the cavity of the base box 11 through the wire holes.

[0040] The circuit board under test (TBD) 52 is fixed to the upper part of the test fixture circuit board 51 by the clamping mechanism 20. The TBD 52 contacts the spring pin 512 on the test fixture circuit board 51 to achieve electrical connection. The fixture circuit board 51 is electrically connected to the laser gyroscope body 60 and the laser gyroscope test platform 70 via the electrical connector 12, and is also electrically connected to the data acquisition module 40. The data acquisition module 40 is used to acquire various voltage signals of the TBD 52. The high voltage signal is also connected to the high voltage attenuator 30. The high voltage attenuator 30 attenuates the voltage signal and connects it to the data acquisition module 40 via a wire. The function of the high voltage attenuator 30 is to attenuate the high voltage signal to the voltage range that the data acquisition module 40 can measure, so as not to damage the data acquisition module 40.

[0041] The electrical connector 12 is connected to the side of the base box 11. The tooling circuit board 51 is connected to the laser gyroscope body 60 and the laser gyroscope test stand 70 through the electrical connector 12. The laser gyroscope test stand 70 is electrically connected to the computer workstation 80. The computer workstation 80 is used to analyze and process the test data of the laser gyroscope circuit. The label printer 90 is electrically connected to the computer workstation 80. The label printer 90 is used to print qualified or faulty labels on the circuit board 52 under test.

[0042] In this embodiment, the clamping mechanism 20 includes a fixed clamp 21, a movable clamp 22, and a limiting baffle 23; the test fixture circuit board 51 is connected between the fixed clamp 21 and the movable clamp 22, and the limiting baffle 23 is disposed above the movable clamp 22. The limiting baffle 23 is used to limit the test fixture circuit board 51 and the circuit board 52 under test.

[0043] See Figure 3 Specifically, the fixing clamp 21 and the movable clamp 22 are used to install the test fixture circuit board 51, clamp or release the circuit board under test 52, and limit the test fixture circuit board 51 and the circuit board under test 52 by the limiting baffle 23. The mounting holes 215 of the fixing clamp 21 and the limiting baffle 23 are all oblong holes, which facilitates the adjustment of the position distance to accommodate different models of circuit boards under test 52.

[0044] In this embodiment, the fixing clamp 21 includes a mounting base 211; the mounting base 211 is provided with two oblong mounting holes 215, and the mounting base 211 is connected to a set of threaded holes of the base box 11 by bolts; the fixing clamp 21 also includes a clamping part 212, the clamping part 212 is provided with a lower slot 213 and an upper slot 214, the lower slot 213 is used to install the test fixture circuit board 51 with spring probe, and the upper slot 214 is used to clamp the circuit board 52 to be tested.

[0045] See Figure 4 Specifically, the fixing clamp 21 has an L-shaped structure, comprising a mounting base 211 and a clamping part 212. The mounting base 211 of the fixing clamp 21 has two oblong mounting holes 215. The mounting base 211 is bolted to a set of threaded holes in the base housing 11. The mounting position of the fixing clamp 21 can be adjusted through the oblong mounting holes 215 to accommodate different sizes of the circuit board 52 under test. The clamping part 212 of the fixing clamp 21 has two slots, namely a lower slot 213 and an upper slot 214. The lower slot 213, together with the corresponding slot of the movable clamp 22, is used to install the tooling circuit board with spring pins 512. The upper slot 214, together with the corresponding slot of the movable clamp 22, is used to clamp the circuit board 52 under test.

[0046] In this embodiment, the movable clamp 22 includes a clamp seat 221, a slider 222, and a guide rod 223. The clamp seat 221 is fastened to the base box 11 by a set of bolts. The clamp seat 221 is provided with a first elongated slot 231 for clamping the test fixture circuit board 51. The clamp seat 221 is also provided with an L-shaped limiting boss 232 and a guide support boss 233. The test fixture circuit board 51 is clamped between the first elongated slot 231 and the lower slot 213. The front end of the L-shaped limiting boss 232 limits the stroke of the slider 222 to prevent the guide rod 223 from sliding out and falling off from the guide hole 234 of the guide support boss 233 when the slider 222 is not clamping the circuit board 52 under test. The front end face of the slider 222 is provided with a second elongated slot 235, which is used to limit the clamped circuit board 52 under test. The side of the slider 222 is provided with a long groove 236, which is used to increase the friction between fingers during manual operation. The middle of the slider 222 is provided with a threaded hole, and the guide rod 223 is fastened to the slider 222 by the thread. A spring 224 is installed on the guide rod 223. One end of the spring 224 acts on the rear end face of the slider 222, and the other end of the spring 224 acts on the front end face of the guide support boss 233. The spring 224 is in a compressed state. The movable clamp 22 also includes a limiting screw 225, which is located at the lower edge of the junction between the guide support boss 233 and the end of the guide rod 223. The limiting screw 225 is fastened to the base box 11 by the thread, and the limiting screw 225 limits the radial movement of the end of the guide rod 223.

[0047] See Figure 5 Specifically, the movable clamp 22 and the fixed clamp 21 together clamp the test fixture circuit board 51 and hold the circuit board 52 under test. The clamp seat 221 of the movable clamp 22 is fastened to the base box 11 by a set of bolts. The clamp seat 221 is provided with a first long strip slot 231 for clamping the test fixture circuit board, a set of L-shaped limiting bosses 232 and a guide support boss 233. The first long strip slot 231 and the lower slot 213 on the clamping surface of the fixed clamp 21 together clamp the test fixture circuit board 51. The L-shaped limiting bosses 232 limit the sides of the slider 222 to prevent the slider 222 from swaying left and right during movement. The front end of the L-shaped limiting bosses 232 limits the stroke of the slider 222 to prevent the guide rod 223 from sliding out and falling off from the guide hole 234 of the guide support boss 233 when the slider 222 is not clamping the circuit board 52 under test.

[0048] The slider 222 has a second elongated slot 235 on its front end face that limits the position of the circuit board 52 under test. The slider 222 has elongated grooves 236 on its sides (including the left, right, and top surfaces) to increase friction between the slider and fingers during manual operation. The slider 222 has a threaded hole in its middle, and the guide rod 223 is threadedly fastened to the slider 222. A spring 224 is mounted on the guide rod 223. One end of the spring 224 acts on the rear end face of the slider 222, and the other end acts on the front end face of the guide support boss 233. The spring 224 is slightly compressed.

[0049] The limiting screw 225 is located on the lower edge of the junction between the guide support boss 233 and the end of the guide rod 223, on the opposite side of the spring member 224. The limiting screw 225 is threadedly fastened to the base box 11. The limiting screw 225 limits the radial direction of the end of the guide rod 223, preventing the slider 222 from tilting upward and the guide rod 223 from sliding out and falling off from the guide hole 234 of the guide support boss 233.

[0050] In this embodiment, the test fixture circuit board 51 includes a fixture circuit board body 511 and a spring pin 512; the fixture circuit board body 511 is installed between the lower slot 213 of the fixed clamp 21 and the first long slot 231 of the movable clamp 22; the wires soldered to the pad terminals on the fixture circuit board body 511 pass through the wire holes on the upper surface of the base box 11 and are interconnected with the data acquisition module 40 and the electrical connector 12 in the cavity of the base box 11.

[0051] See Figure 6Specifically, the fixture circuit board body 511 of the test fixture circuit board 51 is installed between the lower slot 213 of the fixed clamp 21 and the first long slot 231 of the movable clamp 22. The wires soldered to the pad terminals on the fixture circuit board body 511 pass through the wire holes on the upper surface of the base box 11 and are interconnected with the electrical connector 12 and the data acquisition module 40 in the cavity of the base box 11. The output of the data acquisition module 40 is also connected to the electrical connector 12, and then interconnected with the laser gyroscope test stand 70 through the electrical connector 12. The high voltage signal of the circuit board under test 52 is soldered to the high voltage output pad on the fixture circuit board body 511 and connected to the laser gyroscope body 60 through the electrical connector 12. It is also connected to the high voltage attenuator 30. After the high voltage is attenuated, it is connected to the data acquisition module 40.

[0052] In summary, this invention comprises a base assembly 10, a clamping mechanism 20, a high-voltage attenuator 30, a data acquisition module 40, a test fixture circuit board 51, a circuit board under test 52, a laser gyroscope body 60, a laser gyroscope test bench 70, a computer workstation 80, and a label printer 90. The base assembly 10 includes a base box 11 and an electrical connector 12. A cavity is formed inside the base box 11, and the clamping mechanism 20, the high-voltage attenuator 30, and the data acquisition module 40 are connected to the upper surface of the base box 11. The upper surface of the base box 11 has several wire holes through which the wiring harnesses of the test fixture circuit board 51, the high-voltage attenuator 30, and the data acquisition module 40 are electrically connected within the cavity of the base box 11. The circuit board under test 52 is fixed to the upper part of the test fixture circuit board 51 by the clamping mechanism 20, and the circuit board under test 52 and the test fixture circuit board 51 are electrically connected. Circuit board 51 is electrically connected to laser gyroscope body 60 and laser gyroscope test stand 70 via electrical connector 12. The high-voltage signal in the fixture circuit board 51 is electrically connected to high-voltage attenuator 30. High-voltage attenuator 30 attenuates the high-voltage signal to a voltage range measurable by data acquisition module 40 to prevent damage to data acquisition module 40. Data acquisition module 40 is used to acquire the voltage signal of the circuit board 52 under test. Electrical connector 12 is connected to the side of base housing 11. Laser gyroscope body 60 and laser gyroscope test stand 70 are connected to fixture circuit board 51 via electrical connector 12. Laser gyroscope test stand 70 is electrically connected to computer workstation 80, which is used to analyze and process laser gyroscope circuit test data. Label printer 90 is electrically connected to computer workstation 80, which is used to print pass or fail labels on the circuit board 52 under test. This invention offers high testing efficiency, low cost, and facilitates recording, statistical analysis, and measurement of test results.

[0053] See Figure 7 In another embodiment of the present invention, a laser gyroscope circuit testing method is provided, employing a laser gyroscope circuit testing device according to the above embodiment, comprising:

[0054] The voltage signal on the circuit board under test 52 is converted by the data acquisition module 40 and then sent to the computer workstation. The host computer software of the computer workstation checks the data after the A / D conversion and determines whether there is a short circuit or open circuit in the circuit under test of the circuit board under test 52.

[0055] If a short circuit is found in the circuit under test, immediately disconnect the power supply to the circuit board 52 under test and print a "Power Short Circuit Fault" label.

[0056] If there is no short circuit in the circuit under test, the test mode will be entered, and the host computer software on the computer workstation will record the test data and generate a test data file.

[0057] If the circuit under test is working properly, a test pass message will be displayed.

[0058] If the circuit under test malfunctions, it enters the fault self-diagnosis mode, compares the data of the malfunction with the fault database, provides the fault location information, and prints a fault label to be affixed to the malfunctioning circuit board under test.

[0059] Specifically, during implementation, the host computer software of the computer workstation is started;

[0060] The circuit board 52 to be tested is clamped onto the clamping mechanism 20;

[0061] Clicking the "Start" button on the host computer software of the computer workstation starts the laser gyroscope test stand 70, which outputs relevant electrical signals to the test device. The test device sends the voltage signals on the circuit board under test 52 to the data acquisition module 40. After A / D conversion, the data is sent to the computer workstation in a preset data format. The host computer software of the computer workstation first checks the relevant data to determine whether there is a short circuit or open circuit on the circuit board under test 52. If there is a short circuit, the power supply to the circuit board under test 52 is immediately and automatically cut off to prevent overcurrent from increasing the fault, and a "Power Short Circuit Fault" label is printed. If there is no short circuit in the circuit under test, the test mode is entered. The host computer software of the computer workstation automatically records the test data and generates a test data file. If the circuit under test works normally, a green "PASS" prompt is displayed. If the circuit under test works abnormally, the fault self-diagnosis mode is entered. The test system software automatically compares the abnormal data with the fault database, indicating that the fault may belong to one or more circuit units or a specific component. Then, a fault label and a brief description are printed and pasted onto the unqualified circuit board under test so that the debugging personnel can debug or repair it again.

[0062] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A laser gyro circuit test apparatus, characterized by, It includes a base assembly (10), a clamping mechanism (20), a high voltage attenuator (30), a data acquisition module (40), a test fixture circuit board (51), a circuit board under test (52), a laser gyroscope body (60), a laser gyroscope test stand (70), a computer workstation (80), and a label printer (90). The base assembly (10) includes a base box (11) and an electrical connector (12); the base box (11) has a cavity inside, and the clamping mechanism (20), the high voltage attenuator (30) and the data acquisition module (40) are connected to the upper surface of the base box (11); the upper surface of the base box (11) is provided with several wire holes, and the wire harnesses of the test fixture circuit board (51), the high voltage attenuator (30) and the data acquisition module (40) are electrically connected in the cavity of the base box (11) through the wire holes; The circuit board under test (52) is fixed to the upper part of the test fixture circuit board (51) by the clamping mechanism (20). The circuit board under test (52) and the test fixture circuit board (51) are electrically connected. The fixture circuit board (51) is electrically connected to the laser gyroscope body (60) and the laser gyroscope test stand (70). A portion of the signal of the fixture circuit board (51) is also connected to the data acquisition module (40), wherein the high voltage signal is also electrically connected to the high voltage attenuator (30). The high voltage attenuator (30) is used to attenuate the high voltage signal to the voltage measurement range of the data acquisition module (40). The data acquisition module (40) is used to acquire each voltage signal of the circuit board under test (52). The electrical connector (12) is fastened to the side of the base box (11). The tooling circuit board (51), the laser gyroscope body (60) and the laser gyroscope test stand (70) are connected through the electrical connector (12). The laser gyroscope test stand (70) and the computer workstation (80) are electrically connected. The computer workstation (80) is used to analyze and process the test data of the laser gyroscope circuit. The label printer (90) and the computer workstation (80) are electrically connected. The label printer (90) is used to print the qualified or faulty label of the circuit board (52) under test.

2. A laser gyro circuit test apparatus according to claim 1, wherein, The clamping mechanism (20) includes a fixed clamp (21), a movable clamp (22), and a limiting baffle (23); the test fixture circuit board (51) is installed between the fixed clamp (21) and the movable clamp (22), and the limiting baffle (23) is disposed above the movable clamp (22). The limiting baffle (23) is used to limit the test fixture circuit board (51) and the circuit board under test (52).

3. A laser gyro circuit test apparatus according to claim 2, wherein, The fixing clamp (21) includes a mounting base (211); the mounting base (211) is provided with two waist-shaped mounting holes (215), and the mounting base (211) is connected to a set of threaded holes of the base box (11) by bolts.

4. A laser gyro circuit test apparatus according to claim 3, wherein The fixing clamp (21) also includes a clamping part (212), which has a lower slot (213) and an upper slot (214). The lower slot (213) is used to install the test fixture circuit board (51) with spring pins, and the upper slot (214) is used to clamp the circuit board to be tested (52).

5. A laser gyro circuit test apparatus according to claim 4, wherein, The movable clamp (22) includes a clamp seat (221), a slider (222), and a guide rod (223); the clamp seat (221) is fastened to the base box (11) by a set of bolts, the clamp seat (221) is provided with a first elongated slot (231) for clamping the test fixture circuit board (51), and the clamp seat (221) is also provided with an L-shaped limiting boss (232) and a guide support boss (233); The test fixture circuit board (51) is clamped between the first elongated slot (231) and the lower slot (213); the front end of the L-shaped limiting boss (232) limits the stroke of the slider (222) to restrict the slider (222) from sliding out and falling off from the guide hole (234) of the guide support boss (233) when the slider (222) is not clamping the circuit board (52) under test.

6. The laser gyroscope circuit testing device according to claim 5, characterized in that, The front end face of the slider (222) is provided with a second elongated slot (235), which is used to limit the position of the circuit board (52) to be clamped; The slider (222) has a long groove (236) on its side, which is used to increase the friction between fingers during manual operation.

7. A laser gyroscope circuit testing device according to claim 6, characterized in that, The slider (222) has a threaded hole in the middle, and the guide rod (223) is fastened to the slider (222) by threads; A spring (224) is installed on the guide rod (223). One end of the spring (224) acts on the rear end face of the slider (222), and the other end of the spring (224) acts on the front end face of the guide support boss (233). The spring (224) is in a compressed state.

8. A laser gyro circuit test apparatus according to claim 7, wherein, The movable clamp (22) also includes a limiting screw (225), which is located at the lower edge of the junction between the guide support boss (233) and the end of the guide rod (223); the limiting screw (225) is threaded onto the base box (11), and the limiting screw (225) limits the radial direction of the end of the guide rod (223).

9. A laser gyro circuit test apparatus according to claim 8, wherein, The test fixture circuit board (51) includes a fixture circuit board body (511) and a spring pin (512); the fixture circuit board body (511) is installed between the lower slot (213) of the fixed clamp (21) and the first elongated slot (231) of the movable clamp (22); The tooling circuit board (51) leads out wires through the pads, passes through the wire holes on the upper surface of the base box (11), and is interconnected with the high voltage attenuator (30), the data acquisition module (40) and the electrical connector (12) in the cavity of the base box (11).

10. A method for testing a laser gyro circuit using the laser gyro circuit testing device according to any one of claims 1 to 9, characterized by, include: The voltage signal on the circuit board under test (52) is converted by the data acquisition module (40) and sent to the computer workstation (80). The host computer software of the computer workstation (80) checks the data after the A / D conversion and determines whether there is a short circuit, open circuit and preset fault type in the circuit board under test (52). If a short circuit is found in the circuit under test, immediately disconnect the power supply to the circuit board under test (52) and print a "Power Short Circuit Fault" label. If there is no short circuit in the circuit under test, the test mode will be entered and the host computer program of the computer workstation (80) will record the test data and generate a test data file. If the circuit under test is working properly, a test pass message will be displayed. If the circuit under test malfunctions, it enters the fault self-diagnosis mode, compares the data of the malfunction with the fault database, provides the fault location information, and prints a fault label to be affixed to the malfunctioning circuit board under test.

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