Device and method for testing photoelectric performance of gyroscope

Abstract

The invention discloses a photoelectric performance testing device and method for a gyroscope, the testing device comprises a base, a positioning module and an adjustment testing module, the positioning module and the adjustment testing module are oppositely arranged and are both slidably mounted on the base, the gyroscope to be tested is fixed on the positioning module, the adjustment testing module comprises a testing support, an adjustment swing arm, a stepping motor and an encoder, the testing support is arranged on the base in a sliding mode, the stepping motor is fixedly installed on the testing support, a front end output shaft of the stepping motor is fixedly connected with the rear end of the adjusting swing arm, the front end of the adjusting swing arm is connected with a light barrier of a gyroscope to be tested, and a rear end output shaft of the stepping motor is connected with the encoder. And the detection system is positioned on one side of the base and is electrically connected with the detected gyroscope and the encoder. The stepping motor drives the adjusting swing arm to achieve synchronous rotation of the light barrier, through photoelectric signals of the encoder and the gyroscope, precise measurement of the opening angle and the compensation angle of the gyroscope is achieved, and the device has the advantages of automatic detection, high detection precision and low cost.

Description

Technical Field

[0001] The invention relates to a device and method for testing the photoelectric performance of a gyroscope. Background Art

[0002] The gyroscope is one of the key factors that determine the accuracy of the aircraft's hit. Its function is to convert the aircraft's angular velocity, angular displacement and other motion parameters into detectable current signal output. Determining the opening angle and compensation angle of the gyroscope's rotor shaft is the key zero position that determines the measurement accuracy of the gyroscope's angular velocity, angular displacement and other motion parameters. Usually, certain requirements are put forward for the gyroscope's opening angle and compensation angle, and corresponding tests are required. The test method is usually to fix the gyroscope and power it on, and test the opening angle and compensation angle during the power-on process.

[0003] Common gyroscope test equipment consists of a voltage-stabilized power supply, a gyroscope fixing bracket, a pointer, and an angle plate. The entire operation process is completed by manually operating mechanical equipment, and various parameters are manually controlled and interpreted. The measurement accuracy and efficiency of the opening angle and compensation angle of the gyroscope rotor shaft are not high, and the quality and production efficiency are difficult to guarantee, which cannot meet the testing needs of large-scale production. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a photoelectric performance testing device of a gyroscope with simple structure and convenient operation, and provides a photoelectric performance testing method of a gyroscope with high testing accuracy.

[0005] The technical solution of the present invention for solving the above technical problems is: a photoelectric performance test device of a gyroscope, comprising a base, a positioning module, an adjustment test module and a detection system, the positioning module and the adjustment test module are relatively arranged and can be slidably installed on the base, the gyroscope to be tested is fixed on the positioning module, the adjustment test module comprises a test bracket, an adjustment swing arm, a stepper motor and an encoder, the test bracket can be slidably arranged on the base, the stepper motor is fixedly installed on the test bracket, the front end output shaft of the stepper motor is fixedly connected to the rear end of the adjustment swing arm, the front end of the adjustment swing arm is connected to the light baffle of the gyroscope to be tested in a crank thin-wall interference contact manner, so as to realize synchronous rotation of the stepper motor and the light baffle, and the rear end output shaft of the stepper motor is connected to the encoder; the detection system is located on one side of the base, and the detection system is electrically connected to the gyroscope to be tested and the encoder.

[0006] The photoelectric performance testing device of the gyroscope, the base comprises a bottom plate and a guide rail fixedly arranged on the bottom plate.

[0007] The above-mentioned photoelectric performance testing device of the gyroscope, the positioning module includes a gyroscope bracket and a first guide rail seat, the first guide rail seat can be slidably set on the guide rail, the gyroscope bracket is fixed on the first guide rail seat, and the gyroscope bracket is provided with a groove with an L-shaped cross-section. The mechanical zero position of the gyroscope under test is positioned through the two positioning surfaces of the groove, and the gyroscope under test is fastened by screws.

[0008] In the above-mentioned photoelectric performance testing device of the gyroscope, a second guide rail seat is provided below the test bracket, the second guide rail seat can be slidably arranged on the guide rail, and the test bracket is fixed on the second guide rail seat.

[0009] The photoelectric performance test device of the above gyroscope, the opening angle W° at the front end of the swing arm is adjusted so as to adjust the front end of the swing arm to contact with the light shield, and the interference between the front end diameter of the swing arm and the diameter of the light shield is N mm; the middle part of the swing arm is concave to form a thin-walled structure, so that the front end of the swing arm is bent and deformed when in contact with the light shield, and radial pressure is applied to the light shield. .

[0010] In the above-mentioned photoelectric performance testing device of the gyroscope, the rear end output shaft of the stepper motor is connected to the encoder through a coupling.

[0011] The photoelectric performance testing device of the above-mentioned gyroscope, the testing system includes a data processing and control module, a driving module, a data acquisition module, and a display module. The encoder, the gyroscope and the input end of the data acquisition module are connected, the output end of the data acquisition module is connected to the data processing and control module, the display module is connected to the data processing and control module, and the data processing and control module is connected to the stepping motor through the driving module.

[0012] A method for testing the photoelectric performance of a gyroscope comprises the following steps:

[0013] Step 1: Turn on the power of the photoelectric performance test device, and initialize and self-check the photoelectric performance test device;

[0014] Step 2: Select the model of the gyroscope to be tested;

[0015] Step 3: Position the mechanical zero position of the gyroscope to be tested through the two positioning surfaces of the groove on the gyroscope bracket, and fasten the gyroscope to be tested to the gyroscope bracket with screws;

[0016] Step 4: Make sure the adjustment arm is in the mechanical zero position, push the adjustment test module to move along the guide rail, so that the adjustment arm contacts the light shield. Due to the interference contact design between the adjustment arm and the light shield, the adjustment arm is deformed at B, exerting a certain radial pressure on the light shield, which can drive the light shield to move synchronously.

[0017] Step 5: The test system works. The drive module drives the stepper motor to drive the light shield to rotate according to the angle. The encoder feeds back the rotation angle of the light shield to the data acquisition module, which then sends it to the data processing and control module. At the same time, the test system synchronously measures the photoelectric signal of the gyroscope, and feeds back the relationship between the photoelectric signal of the gyroscope and the rotation angle of the light shield in real time.

[0018] Step 6: The test system calculates the opening angle and compensation angle of the gyroscope under test, and performs an overall performance evaluation on the optoelectronic performance of the gyroscope;

[0019] Step 7: Process the test results to automatically generate a test report.

[0020] The beneficial effects of the present invention are:

[0021] 1. The present invention can replace the corresponding positioning module to fix gyroscopes of different external sizes, and replace the adjustment swing arms of different specifications to adapt to light shields of different sizes, so as to achieve the purpose of modular measurement and rapid production change.

[0022] 2. The present invention fixes the gyroscope to be tested on the positioning module, and the adjustment swing arm of the test module adopts a contact-type angle-fixed gyroscope light baffle. The stepper motor drives the adjustment swing arm to realize the synchronous rotation of the light baffle, and then realizes the precise measurement of the gyroscope opening angle and compensation angle through the encoder and the photoelectric signal of the gyroscope. It has the advantages of automatic detection, high detection accuracy, low cost, modular design, and rapid production change. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the photoelectric performance testing device of the present invention.

[0024] Figure 2 A schematic diagram of the structure of the base.

[0025] Figure 3 This is a schematic diagram of the structure of the positioning module.

[0026] Figure 4 Schematic diagram of the structure of the adjustment test module.

[0027] Figure 5 Schematic diagram of the structure for adjusting the swing arm.

[0028] Figure 6 This is the structural block diagram of the detection system. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0030] like Figure 1-Figure 6As shown, a photoelectric performance test device for a gyroscope comprises a base 1, a positioning module 2, an adjustment test module 3 and a detection system 4, wherein the positioning module 2 and the adjustment test module 3 are relatively arranged and can be slidably mounted on the base 1, and the gyroscope 5 to be tested is fixed on the positioning module 2, and the adjustment test module 3 comprises a test bracket 301, an adjustment swing arm 303, a stepper motor 304 and an encoder 305, wherein the test bracket 301 can be slidably arranged on the base 1, and the stepper motor 304 is fixedly mounted on the test bracket 301, and the front end output shaft of the stepper motor 304 is fixedly connected to the rear end of the adjustment swing arm 303 through a set screw 307, and the front end of the adjustment swing arm 303 is connected to the light baffle 204 of the gyroscope 5 to be tested in a crank thin-wall interference contact manner, so as to realize synchronous rotation of the stepper motor 304 and the light baffle 204, and the rear end output shaft of the stepper motor 304 is connected to the encoder 305; the detection system 4 is located on one side of the base 1, and the detection system 4 is electrically connected to the gyroscope 5 to be tested and the encoder 305.

[0031] The base 1 includes a bottom plate 101 and a guide rail 102 fixedly arranged on the bottom plate 101 . A screw hole matrix is ​​processed on the bottom plate 101 according to a fixed rule to fix the guide rail 102 .

[0032] The positioning module 2 includes a gyroscope bracket 201 and a first guide rail seat 202, wherein the first guide rail seat 202 can be slidably disposed on the guide rail 102, and the gyroscope bracket 201 is fixed to the first guide rail seat 202 by means of a fixing screw 203. The gyroscope bracket 201 is provided with a groove having an L-shaped cross section, and the mechanical zero position of the gyroscope 5 to be tested is positioned by means of two positioning surfaces A and B of the groove, and the gyroscope 5 to be tested is fastened by means of a screw 205. When it is necessary to test gyroscopes of the same type but different sizes, the corresponding positioning module 2 can be replaced to fix gyroscopes of different external sizes.

[0033] A second guide rail seat 302 is disposed below the test bracket 301 . The second guide rail seat 302 can be slidably disposed on the guide rail 102 . The test bracket 301 is fixed to the second guide rail seat 302 by screws 308 .

[0034] The opening angle W° at the front end F of the adjusting swing arm 303 is adjusted so that the front end of the adjusting swing arm 303 contacts the light shield 204, the diameter of the front end of the adjusting swing arm 303 and the diameter of the light shield 204 are adjusted to have an interference amount of N mm, and the middle part E of the adjusting swing arm 303 is adjusted to be concave to form a thin-walled structure; when the adjusting swing arm 303 contacts the light shield 204, due to the existence of the diameter interference amount, the E part of the adjusting swing arm 303 is bent and deformed, and a certain radial pressure is applied to the light shield 204, which can drive the light shield 204 to move synchronously, and then complete the rotation of the light shield 204 during the photoelectric test of the gyroscope, and ensure the accuracy of the rotation angle during the test process. The adjusting swing arms 303 of different specifications are replaced to adapt to light shields 204 of different sizes, so as to achieve the purpose of modular measurement and rapid production change.

[0035] The rear output shaft of the stepper motor 304 is connected to the encoder 305 via a coupling 306 to achieve real-time measurement of the rotation angle during the test.

[0036] The test system includes a data processing and control module, a drive module, a data acquisition module, and a display module. The encoder 305 and the gyroscope are connected to the input end of the data acquisition module, the output end of the data acquisition module is connected to the data processing and control module, the display module is connected to the data processing and control module, and the data processing and control module is connected to the stepper motor 304 through the drive module.

[0037] The test system provides an interface for users to interactively input test conditions and manage test data and user permissions. Users input data such as number, angle requirements, gyroscope type, etc., so that the test system can automatically test according to requirements.

[0038] The data processing and control module controls the stepping motor 304 through the driving module to control the movement of the light shielding plate and the movement speed of the light shielding plate, so as to achieve the requirements of the test speed and the purpose of measurement repeatability.

[0039] The data acquisition module is used to dynamically collect the encoder 305 and the photoelectric detection data during the test process, and correctly transmit it to the data processing and control module through the interface.

[0040] The data processing and control module processes the collected data of the tested gyroscope 5 online, and then displays it dynamically and stores it in a certain format, displays it in the form of a graphic through the display module, and calculates the test results to obtain the opening angle, compensation angle, photocurrent and dark current of the tested gyroscope, which are used for overall performance evaluation of the photoelectric performance of the gyroscope.

[0041] A method for testing the photoelectric performance of a gyroscope comprises the following steps:

[0042] Step 1: Turn on the power of the photoelectric performance test device, and initialize and self-check the photoelectric performance test device;

[0043] Step 2: Select the model of the gyroscope to be tested;

[0044] Step 3: Position the gyroscope 5 under test at a mechanical zero position through two positioning surfaces of the groove on the gyroscope bracket 201, and fasten the gyroscope 5 under test to the gyroscope bracket 201 by screws;

[0045] Step 4: Ensure that the adjustment swing arm 303 is in the mechanical zero position, push the adjustment test module 3 to move along the guide rail 102, so that the adjustment swing arm 303 contacts the light baffle 204. Due to the interference contact design between the adjustment swing arm 303 and the light baffle 204, the E of the adjustment swing arm 303 is deformed, and a certain radial pressure is applied to the light baffle 204, which can drive the light baffle 204 to move synchronously;

[0046] Step 5: The test system works, the driving module drives the stepper motor 304 to drive the light shielding plate 204 to rotate according to the angle, and the encoder 305 feeds back the rotation angle of the light shielding plate 204 to the data acquisition module, and the data acquisition module sends it to the data processing and control module; at the same time, the test system synchronously measures the photoelectric signal of the gyroscope, and feeds back the relationship between the photoelectric signal of the gyroscope and the rotation angle of the light shielding plate 204 in real time;

[0047] Step 6: The test system calculates the opening angle and compensation angle of the gyroscope 5 under test, and performs an overall performance evaluation on the optoelectronic performance of the gyroscope;

[0048] Step 7: Process the test results to automatically generate a test report.

Claims

1. A gyroscope photoelectric performance test device, characterized in that: It includes a base, a positioning module, an adjustment test module and a detection system. The positioning module and the adjustment test module are relatively arranged and can be slidably installed on the base. The gyroscope to be tested is fixed on the positioning module. The adjustment test module includes a test bracket, an adjustment swing arm, a stepper motor and an encoder. The test bracket can be slidably arranged on the base. The stepper motor is fixedly installed on the test bracket. The front end output shaft of the stepper motor is fixedly connected to the rear end of the adjustment swing arm. The front end of the adjustment swing arm is connected to the light baffle of the gyroscope to be tested in a crank thin-wall interference contact manner to achieve synchronous rotation of the stepper motor and the light baffle. The rear end output shaft of the stepper motor is connected to the encoder. The detection system is located on one side of the base, and the detection system is electrically connected to the gyroscope to be tested and the encoder.

2. The photoelectric performance testing device of a gyroscope according to claim 1, characterized in that: The base comprises a bottom plate and a guide rail fixedly arranged on the bottom plate.

3. The photoelectric performance testing device of a gyroscope according to claim 2, characterized in that: The positioning module includes a gyroscope bracket and a first guide rail seat, wherein the first guide rail seat can be slidably arranged on the guide rail, the gyroscope bracket is fixed on the first guide rail seat, and the gyroscope bracket is provided with a groove with an L-shaped cross-section, and the mechanical zero position of the gyroscope to be tested is positioned through two positioning surfaces of the groove, and the gyroscope to be tested is fastened by screws.

4. The photoelectric performance testing device of a gyroscope according to claim 2, characterized in that: A second guide rail seat is provided below the test bracket. The second guide rail seat can be slidably arranged on the guide rail, and the test bracket is fixed on the second guide rail seat.

5. The photoelectric performance testing device of a gyroscope according to claim 2, characterized in that: The opening angle W° at the front end of the adjustment swing arm is adjusted to contact the front end of the adjustment swing arm with the light blocking plate, and the interference between the diameter of the front end of the adjustment swing arm and the diameter of the light blocking plate is adjusted to N mm; the middle part of the adjustment swing arm is recessed to form a thin-wall structure, so that the front end of the adjustment swing arm is bent and deformed when in contact with the light blocking plate, thereby applying radial pressure to the light blocking plate.

6. The photoelectric performance testing device of a gyroscope according to claim 2, characterized in that: The rear end output shaft of the stepper motor is connected to the encoder through a coupling.

7. The photoelectric performance testing device of a gyroscope according to claim 2, characterized in that: The test system includes a data processing and control module, a drive module, a data acquisition module, and a display module. The encoder and the gyroscope are connected to the input end of the data acquisition module, the output end of the data acquisition module is connected to the data processing and control module, the display module is connected to the data processing and control module, and the data processing and control module is connected to the stepper motor through the drive module.

8. A method for testing the photoelectric performance of a gyroscope, which is implemented based on the photoelectric performance testing device of the gyroscope according to claim 7, characterized in that: The following steps are involved: Step 1: Turn on the power of the photoelectric performance test device, and initialize and self-check the photoelectric performance test device; Step 2: Select the model of the gyroscope to be tested; Step 3: Position the mechanical zero position of the gyroscope to be tested through the two positioning surfaces of the groove on the gyroscope bracket, and fasten the gyroscope to be tested to the gyroscope bracket with screws; Step 4: Make sure the adjustment arm is in the mechanical zero position, push the adjustment test module to move along the guide rail, so that the adjustment arm contacts the light shield. Due to the interference contact design between the adjustment arm and the light shield, the adjustment arm is deformed at B, exerting a certain radial pressure on the light shield, which can drive the light shield to move synchronously. Step 5: The test system works. The drive module drives the stepper motor to drive the light shield to rotate according to the angle. The encoder feeds back the rotation angle of the light shield to the data acquisition module, which then sends it to the data processing and control module. At the same time, the test system synchronously measures the photoelectric signal of the gyroscope, and feeds back the relationship between the photoelectric signal of the gyroscope and the rotation angle of the light shield in real time. Step 6: The test system calculates the opening angle and compensation angle of the gyroscope under test, and performs an overall performance evaluation on the optoelectronic performance of the gyroscope; Step 7: Process the test results to automatically generate a test report.

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