Multifunctional gyroscope test tool structure

Abstract

The invention relates to a multifunctional gyroscope testing tool structure. A tool comprises a horizontal assembly, a vertical assembly, a CDBF-21Z connector, a DB37 hole connector, a circuit board and a bottom cover. The gyroscope testing tool is of an inverted-T-shaped structural design, testable items of the gyroscope testing tool and the number of gyroscopes capable of being tested at a time are optimized and upgraded, the testable items are increased, testing items such as gyroscope calibration, temperature scanning and high-low temperature one-time electrification can be completed through the horizontal assembly, and testing items such as threshold values and dead zones can be completed through the vertical assembly. The number of gyroscopes which can be tested at a time is increased to 16, the testing efficiency is remarkably improved, the tool utilization rate is improved, and the testing cost is saved.

Description

Technical Field

[0001] The invention relates to a multifunctional gyro test fixture structure, which realizes comprehensive and efficient testing of a fiber optic gyro and belongs to the field of inertial guidance. Background Art

[0002] Gyroscopes are core components of various inertial measurement systems. They are used to sense the angular motion of a carrier relative to inertial space, measure the carrier's angular displacement and angular velocity, and together with accelerometers and navigation computers, they form an inertial navigation system.

[0003] As a new generation of inertial devices, fiber optic gyroscopes are based on the special theory of relativity and the Sagnac effect, and adopt optomechanical integration technology. They are fully solid-state, have no rotating and friction parts, have a wide range of precision applications, a large dynamic range, strong environmental adaptability, low power consumption, a distributed structure, high integration, and rapid response. In principle, they have the advantages of high reliability, long life, and short startup time.

[0004] In view of the increasingly high requirements for the accuracy, volume, weight and power consumption of inertial navigation measurement systems in space technology and weapon equipment, it is necessary to develop miniature high-precision angular rate sensors to lay a technical and product foundation for the development of space technology and weapon equipment. Fiber optic gyroscopes are the best solution for miniature / high-precision angular rate sensors, especially for the accuracy level of 0.1° / h.

[0005] The conventional test items of the fiber optic gyroscope include calibration, temperature scanning, high and low temperature one-time power-on, threshold value, dead zone, etc. Among them, the test items such as calibration, temperature scanning, high and low temperature one-time power-on are the tests with the gyroscope input reference axis facing the sky, and the test items such as threshold value and dead zone are the tests with the gyroscope input reference axis parallel to the installation plane.

[0006] To complete the above routine test items, the existing gyro test jig needs to be replaced with a test jig in which the gyro input reference axis faces the sky and a test jig in which the gyro input reference axis is parallel to the mounting plane. The existing gyro test jig can test up to 4 gyroscopes at a time.

[0007] Improving the testing efficiency of fiber optic gyroscopes and increasing the testable items of fiber optic gyroscope testing tooling are necessary methods to complete the mass production of fiber optic gyroscopes, which can accelerate the industrialization development of fiber optic gyroscopes. Summary of the invention

[0008] The technical problem solved by the present application is: in order to improve the efficiency of fiber optic gyroscope testing and the problem of testable items, a multifunctional gyroscope testing tooling structure is provided, which can complete multiple gyroscope tests in a single time as much as possible while ensuring the accuracy of gyroscope testing and taking into account more test items.

[0009] The technical solutions provided by this application are as follows:

[0010] A multifunctional gyro test fixture structure comprises a horizontal component, a vertical component, a CDBF-21Z connector, a DB37 hole connector and a circuit board; the vertical component is connected to the middle of the upper surface of the horizontal component and is perpendicular to the horizontal component, the horizontal component is arranged on the rotating table surface of the turntable, and is driven by the turntable to rotate together; a plurality of first grooves for installing a test gyro are arranged on both sides of the vertical component on the upper surface of the horizontal component, a CDBF-21Z connector is installed on one side of each first groove on the horizontal component, and a DB37 hole connector is installed on the side of the horizontal component; the circuit board is installed on the horizontal component; a plurality of second grooves for installing a test gyro are respectively opened on two opposite sides of the vertical component; the test gyro has a CDBF-21T hole Connector, CDBF-21Z connector is used to connect CDBF-21T hole connector; CDBF-21Z connector is connected to circuit board; one end of the first adapter cable is connected to DB37 pin connector, and the other end is connected to the turntable, DB37 hole connector is used to connect DB37 pin connector, the turntable is connected to power box and industrial computer through the second adapter cable; the power box supplies power to the installed test gyroscope through the second adapter cable, circuit board, CDBF-21Z connector and CDBF-21T hole connector in sequence, the pulse signal emitted by the test gyroscope is transmitted to the circuit board through CDBF-21T hole connector and CDBF-21Z connector, and the circuit board sends the pulse signal to the industrial computer through the second adapter cable.

[0011] A mounting platform is provided at four corners of the bottom of each of the first grooves. The surface of the mounting platform is a horizontal mounting surface for mounting the test gyroscope. The surface of the horizontal mounting surface is lower than the upper surface of the horizontal component.

[0012] The mounting platform is provided with a plurality of second threaded holes for mounting the test gyroscope, so as to be suitable for test gyroscopes of different specifications.

[0013] When the test gyro is installed in the second groove, the CDBF-21T hole connector is connected to the CDBF-21Z connector on the horizontal assembly.

[0014] Two opposite sides of the vertical component are provided with connecting ears, and fixing threaded holes are opened on the connecting ears. Bolts pass through the fixing threaded holes to connect with the horizontal component.

[0015] A reinforcing plate is connected between the connecting lug and the side surface of the vertical component.

[0016] A mounting platform is provided at the four corners of the bottom of each second groove, and the surface of the mounting platform is a vertical mounting surface for mounting the test gyroscope, and the surface of the vertical mounting surface is lower than the side surface of the vertical component.

[0017] There are multiple circuit boards, each of which is connected to the power box via a first adapter cable, and each circuit board is connected to multiple test gyroscopes via a CDBF-21Z connector and a CDBF-21T hole connector; a circuit board and the CDBF-21Z connector connected to the circuit boards form an integrated test module.

[0018] In summary, this application at least includes the following beneficial technical effects:

[0019] (1) The present invention designs an inverted T-shaped structure of horizontal components and vertical components, so that the multifunctional gyroscope test tool can test gyroscope calibration, temperature scanning, high and low temperature single power-on test items, and has the function of testing gyroscope threshold and dead zone, thereby improving the tool utilization rate and saving testing costs.

[0020] (2) The present invention is applicable to three different specifications of gyroscopes, and can complete the test of 16 gyroscopes with input reference axes facing upward at a single time, or complete the test of 8 gyroscopes with input reference axes parallel to the installation plane at a single time, thereby significantly improving the test efficiency.

[0021] (3) The present invention adopts a symmetrical structural design, with two power supply lines from a 28V power box independently supplying power to the multifunctional gyro test fixture, and four power modules supply power to the gyro respectively, thereby realizing a modular and integrated design of the gyro test fixture, which is convenient for later maintenance. The main structure of the multifunctional gyro test fixture is made of aluminum alloy material, which has low density, light weight, high specific stiffness, and good processing technology, meeting the mechanical design requirements of this product. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the device of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure of the device of the present invention;

[0024] Figure 3 Schematic diagram of the pitch of the horizontal component of the device of the present invention, wherein Figure a is a top view and Figure b is a bottom view;

[0025] Figure 4 It is a pitch schematic diagram of the vertical component of the device of the present invention, wherein Figure a is a top view and Figure b is a bottom view.

[0026] Figure 5 It is a schematic diagram of the test system of the present invention.

[0027] Characteristic markings: 1. Horizontal assembly; 2. Vertical assembly; 3. CDBF-21Z connector; 4. DB37 hole connector; 5. Circuit board; 6. Bottom cover;

[0028] 1-1, mounting threaded hole; 1-3, first mounting surface; 1-2, first threaded hole; 1-4, second threaded hole; 1-5, horizontal mounting surface; 1-6, third threaded hole; 1-9, second mounting surface; 1-7, fifth threaded hole; 1-8, fourth threaded hole;

[0029] 2-4, fixing surface; 2-1, fixing threaded hole; 2-2, vertical mounting surface; 2-3, sixth threaded hole;

[0030] 7. Test gyro; 71. CDBF-21T hole connector;

[0031] 8. First adapter cable; 81. DB37 pin connector;

[0032] 9. Turntable; 91. Second transfer cable; 92. Power supply box; 93. Industrial computer. DETAILED DESCRIPTION

[0033] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments disclosed in the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] like Figure 1 As shown, in response to the demand for increased production of three different specifications of gyroscopes and increased testing workload, an embodiment of the present invention proposes a multifunctional gyroscope testing tooling structure, which increases the number of gyroscopes tested in a single test and the number of testable items. The tooling structure is compact in design, reasonable in layout, and has good assembly processability. While ensuring the accuracy of gyroscope testing, the requirements of being light and small are achieved.

[0035] like Figure 2 As shown, a multifunctional gyroscope test fixture structure includes: a horizontal component 1, a vertical component 2, a CDBF-21Z connector 3, a DB37 hole connector 4, a circuit board 5, and a bottom cover 6.

[0036] like Figure 3As shown, the middle of the surface of the horizontal component 1 is the first mounting surface 1-3 for mounting the vertical component. Six first threaded holes 1-2 are distributed on the mounting surface 1-3 of the vertical component. The horizontal component 1 is connected and fixed to the vertical component 2 through the first threaded holes 1-2 and bolts. The upper surface of the horizontal component 1 is provided with 16 square first grooves, which are evenly distributed on both sides of the vertical component 2. The four corners of the bottom of each first groove are provided with a mounting platform. The surface of the mounting platform is the horizontal mounting surface 1-5 of the test gyroscope, on which a plurality of second threaded holes 1-4 for mounting the test gyroscope 7 are provided, so as to be suitable for test gyroscopes 7 of different specifications. The surface of the horizontal mounting surface 1-5 is lower than the upper surface of the horizontal component 1, so as to make the test gyroscope easier to install. The upper surface of the horizontal component 1 is provided with mounting threaded holes 1-1 for mounting sixteen CDBF-21Z connectors 3, and one CDBF-21Z connector 3 is mounted on one side of each groove through the mounting threaded holes 1-1. The test gyroscope 7 has a CDBF-21T hole connector 71, and the CDBF-21Z connector 3 is used to connect the CDBF-21T hole connector 71. The lower surface of the horizontal component 1 is provided with fifth threaded holes 1-7 for mounting sixteen circuit boards 5, so as to mount the circuit boards 5 on the lower surface of the horizontal component 1. The side of the horizontal component 1 has two third threaded holes 1-6 for installing the DB37 socket connector 4. The lower surface of the horizontal component 1 is a second mounting surface 1-9 for installing the bottom cover 6. The second mounting surface 1-9 has twelve fourth threaded holes 1-8 for installing the bottom cover. The bottom cover 6 is arranged on the outside of the circuit board 5.

[0037] like Figure 4 As shown, the lower surface of the vertical component 2 is the fixing surface 2-4 of the vertical component, and the fixing surface 2-4 is in contact with the first mounting surface 1-3 of the horizontal component 2. Two opposite sides of the vertical component 2 are provided with connecting ears, and a reinforcing plate is connected between the connecting ears and the side of the vertical component 2. A fixing threaded hole 2-1 is opened on the connecting ear, and a bolt passes through the fixing threaded hole 2-1 to connect with the horizontal component 1; when the test gyro is installed in the second groove, the CDBF-21T hole connector 71 is connected with the CDBF-21Z connector 3 on the horizontal component 1; through the connection mode of the vertical component and the fact that the vertical component does not have a separate CDBF-21Z connector 3, but adopts the CDBF-21Z connector 3 of the shared horizontal component, the vertical component 2 is easy to disassemble and assemble, and the vertical component 2 can be disassembled when the test item of the test gyro installed on the vertical component 2 is not performed. Eight square second grooves are provided on two opposite sides of the vertical component 2, and the eight second grooves are symmetrically distributed on both sides of the vertical component 2. A mounting platform is provided at the four corners at the bottom of each second groove, and the surface of the mounting platform is the vertical mounting surface 2-2 of the test gyroscope, on which a sixth threaded hole 2-3 for mounting the test gyroscope is provided.

[0038] Calibration, temperature scanning, high and low temperature one-time power-on all fix the gyro on the mounting surface of the 16 groove positions of the horizontal component 1. The difference between these test items is the turntable speed and temperature conditions, and the installation method is the same; threshold and dead zone fix the gyro on the mounting surface of the 8 groove positions of the vertical component 2. The difference between these two test items is the turntable speed, and the installation method is the same. When measuring horizontal test items, you cannot measure vertical test items, because these test items have different test conditions and need to be measured one by one, but the installation method is either horizontal or vertical. After measuring the horizontal test items, remove the gyro for the horizontal test, install it on the vertical mounting surface, and then measure the vertical test items.

[0039] like Figure 5 As shown, the CDBF-21Z connector 3 is connected to the circuit board 5, and the test gyro has a CDBF-21T hole connector, which matches the CDBF-21Z connector 3. The DB37 hole connector 4 is connected to the circuit board 5, and the DB37 hole connector 4 is plugged into the DB37 pin connector 81, and the DB37 pin connector is connected to the aviation plug of the turntable through the first adapter cable 8. The turntable 9 is also connected to a 28V power box 92 and an industrial computer 93 through a second adapter cable 91. The turntable of the turntable 9 is used to drive the test tooling to rotate.

[0040] The test process is as follows: the test gyroscope is installed on the test fixture, and then the 28V power supply box is turned on. The 28V power supply box supplies power to the turntable and the test fixture through the second adapter cable. The power module of the circuit board inside the test fixture converts the 28V voltage into a 5V voltage, and the 28V power supply box supplies power to the corresponding test gyroscope through the circuit board 5 and multiple groups of CDBF-21T hole connectors and CDBF-21Z connectors 3. The test gyroscope sends out a pulse signal, and the pulse signal is output to the circuit board 5 through the CDBF-21T hole connector and the CDBF-21Z connector 3. The circuit board 5 sends the pulse signal to the industrial computer through the second adapter cable. The industrial computer obtains the test result according to the pulse signal and completes the gyroscope test data acquisition.

[0041] The test conditions of the gyro input reference axis upward test item and the input reference axis parallel to the mounting plane test item are different and cannot be tested at the same time. Therefore, the gyro that is tested with the input reference axis parallel to the mounting plane can share the CDBF-21T hole connector after the gyro that is tested with the input reference axis upward is completed.

[0042] The installation method of other components of the gyro test fixture horizontal assembly is as follows:

[0043] a. Place the horizontal assembly upside down on an anti-static desktop, install the CDBF-21Z connector, and secure it with M2x5 screws;

[0044] b. Place the horizontal assembly upside down on the anti-static desktop, install the DB37 connector, and secure it with M3x5 screws;

[0045] c. Place the horizontal assembly upside down on an anti-static desktop, install the circuit board, solder the CDBF-21Z connector and DB37 hole connector, and fix them with M2.5x5 screws;

[0046] d. Place the horizontal assembly upside down on an anti-static desktop, install the bottom cover, and secure it with M2.5x5 screws;

[0047] e. Place the horizontal component with its front side facing up on the anti-static desktop, align the vertical component mounting holes with the horizontal component mounting holes, and fasten them with M6x15 screws;

[0048] The surface roughness of the lower surface of the horizontal component is 1.6, and the flatness is 0.01 mm. The surface roughness of the mounting plane of the horizontal component and the vertical component is 1.6, and the flatness is 0.01 mm. The surface roughness of the gyro mounting plane on the horizontal component (1) and the vertical component (2) is 1.6, and the flatness is 0.01 mm.

[0049] The multifunctional gyro test fixture is made of aluminum alloy, and the surface treatment method of the gyro test fixture is surface anodizing. The horizontal component (1), the vertical component (2), and the bottom cover (6) are made of aluminum alloy, and the surface treatment method is anodizing.

[0050] The contents not described in detail in this application specification belong to the common knowledge of those skilled in the art.

[0051] The present application is described in detail above in conjunction with specific implementation methods and exemplary examples, but these descriptions cannot be understood as limiting the present application. Those skilled in the art understand that, without departing from the spirit and scope of the present application, a variety of equivalent replacements, modifications or improvements can be made to the technical solution of the present application and its implementation methods, all of which fall within the scope of the present application. The scope of protection of the present application shall be subject to the attached claims.

Claims

1. A multifunctional gyro test fixture structure, characterized in that: It comprises a horizontal component (1), a vertical component (2), a CDBF-21Z connector (3), a DB37 hole connector (4) and a circuit board (5); the vertical component (2) is connected to the middle of the upper surface of the horizontal component (1) and is perpendicular to the horizontal component (1); the horizontal component (1) is arranged on the rotating table surface of a rotating table (9) and is driven to rotate together with the rotating table; A plurality of first grooves for mounting a test gyroscope (7) are arranged on both sides of the vertical component (2) on the upper surface of the horizontal component (1); a CDBF-21Z connector (3) is installed on one side of each first groove on the horizontal component (1); and a DB37 hole connector (4) is installed on the side of the horizontal component (1); a circuit board (5) is installed on the horizontal component (1); Two opposite sides of the vertical component (2) are each provided with a plurality of second grooves for mounting the test gyroscope (7); The test gyroscope (7) has a CDBF-21T hole connector (71), and a CDBF-21Z connector (3) is used to connect the CDBF-21T hole connector (71); the CDBF-21Z connector (3) is connected to the circuit board (5); one end of the first adapter cable (8) is connected to the DB37 pin connector (81), and the other end is connected to the turntable, the DB37 hole connector (4) is used to connect the DB37 pin connector (81), and the turntable (9) is connected to a power supply box (92) and an industrial computer (93) through a second adapter cable (91); The power supply box (92) supplies power to the installed test gyroscope in sequence through the second adapter cable (91), the circuit board (5), the CDBF-21Z connector (3) and the CDBF-21T hole connector (71); the pulse signal emitted by the test gyroscope is transmitted to the circuit board (5) through the CDBF-21T hole connector and the CDBF-21Z connector (3); and the circuit board (5) sends the pulse signal to the industrial computer through the second adapter cable.

2. The multifunctional gyro test fixture structure according to claim 1, characterized in that: A mounting platform is provided at the four corner positions of the bottom of each of the first grooves, the surface of the mounting platform is a horizontal mounting surface (1-5) for mounting the test gyroscope, and the surface of the horizontal mounting surface (1-5) is lower than the upper surface of the horizontal component (1).

3. The multifunctional gyro test fixture structure according to claim 2, characterized in that: A plurality of second threaded holes (1-4) for mounting the test gyroscope are arranged on the mounting platform so as to be suitable for test gyroscopes of different specifications.

4. The multifunctional gyro test fixture structure according to claim 1, characterized in that: When the test gyro is installed in the second groove, the CDBF-21T hole connector (71) is connected to the CDBF-21Z connector (3) on the horizontal component (1).

5. The multifunctional gyro test fixture structure according to claim 1, characterized in that: Two opposite sides of the vertical component (2) are provided with connecting ears, and fixing threaded holes (2-1) are provided on the connecting ears. Bolts pass through the fixing threaded holes (2-1) to connect with the horizontal component (1).

6. The multifunctional gyro test fixture structure according to claim 5, characterized in that: A reinforcing plate is connected between the connecting lug and the side surface of the vertical component (2).

7. The multifunctional gyro test fixture structure according to claim 1, characterized in that: A mounting platform is provided at the four corner positions of the bottom of each second groove, the surface of the mounting platform is a vertical mounting surface (2-2) for mounting the test gyroscope, and the surface of the vertical mounting surface (2-2) is lower than the side surface of the vertical component (2).

8. The multifunctional gyro test fixture structure according to claim 1, characterized in that: A plurality of the circuit boards (5) are provided, each circuit board (5) is connected to a power supply box (92) via a first adapter cable (8), and each circuit board (5) is connected to a plurality of test gyroscopes via a CDBF-21Z connector (3) and a CDBF-21T hole connector (71); a circuit board (5) and a CDBF-21Z connector (3) connected to the circuit board (5) form an integrated test module.

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