Gyroscope rotor scanning circle diameter measuring device based on visible light

Abstract

The utility model provides a gyro rotor scanning circle diameter measuring device based on visible light, which comprises a base, a support and a gyro rotor optical system, the gyro rotor optical system comprises a stator, a rotor and a universal bracket, the support is arranged on the surface of the base, the stator is fixed on the support, one end outside the rotor is provided with a visible light parallel light source, and the other end outside the rotor is provided with a light source. A lens cone is arranged in the universal support, one end of the lens cone is connected with a projection screen, and the projection screen is located on the focal plane of the gyrorotor optical system and is perpendicular to the optical axis of the gyrorotor optical system. And the visible light parallel light source is coaxial with the optical axis of the gyrorotor optical system. The utility model has the advantages that the gyro assembly optical system can be detected only by fixing the gyro assembly optical system on a simple tool, the influence of excessive disassembly and assembly on the performance of a detector (the assembly is difficult, and a signal line is thin and easy to break) and a refrigerator (a throttling needle is easy to bend) is reduced, and the screening of the gyro rotor optical system with poor performance and unqualified quality is realized.

Description

Technical Field

[0001] This utility model relates to optical detection technology, and more particularly to optical detection technology for powered gyroscopes, specifically a gyroscope rotor scanning circle diameter measuring device based on visible light. Background Technology

[0002] An infrared conical scanning detection system with a tilting mirror, due to its inherent working principle, has an image point that is a single point on the focal plane of the gyroscope rotor optical system when it is static, but when it is dynamic (the gyroscope rotates), the image point sweeps across the photosensitive element (focal plane) and appears as a circle. This circle is called the scanning circle.

[0003] like Figure 5 As shown, the infrared conical scanning detection system with tilted mirrors consists of a fairing and a gyro rotor optical system. The gyro rotor optical system comprises a spherical mirror, a plane tilted mirror, a focusing lens, a permanent magnet, and photosensitive elements (detectors). Figure 5 (This is a schematic diagram, therefore the gyroscope rotor and gimbal are not shown). A spherical mirror converges and reflects the infrared radiation from the radome onto a tilted plane mirror. The tilted plane mirror forms an angle Ф with the optical axis of the optical system. The plane mirror rotates together with the gyroscope rotor, enabling conical scanning of the image point. A focusing lens focuses the infrared signal reflected from the tilted plane mirror into a single image point, ensuring that the image point falls precisely on the focal plane of the detector. This gyroscope rotor optical system is complex and precise. If there is an error in the mirror mounting distance, the image point will not accurately fall on the focal plane, resulting in a scanned circle that is either too large or too small. This will cause the detection system to malfunction. Therefore, dynamic and static testing of the scanned circle is necessary (especially dynamic testing), because the actual diameter of the scanned circle in operation is affected by the rotation and vibration of the rotor and optical components.

[0004] Since the scanning circle is inside the product and cannot be seen, its size cannot be directly tested through the product, making the detection of the infrared scanning circle a challenge. Utility Model Content

[0005] In response to the problems raised in the background technology, the purpose of this utility model is to propose a gyroscope rotor scanning circle diameter measuring device based on visible light, which can directly measure the diameter of the scanning circle and screen out unqualified gyroscope rotor optical systems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A visible light-based gyroscope rotor scanning circle diameter measuring device includes a base, a support, and a gyroscope rotor optical system. The gyroscope rotor optical system includes a stator, a rotor, and a universal joint. The support is mounted on the surface of the base, and the stator is fixed on the support. A visible light parallel light source is provided at one end of the rotor. A lens tube is provided inside the universal joint, and a projection screen is connected to one end of the lens tube. The projection screen is located on the focal plane of the gyroscope rotor optical system and is perpendicular to the optical axis of the gyroscope rotor optical system. The visible light parallel light source is coaxial with the optical axis of the gyroscope rotor optical system.

[0008] The lens barrel is coaxial with the optical axis of the gyroscope rotor optical system, and the projection screen covers and is fixed to one end of the lens barrel.

[0009] A camera is connected to the other end of the lens barrel.

[0010] The camera is connected to the computer.

[0011] The mirror tube is fixedly connected to the stator.

[0012] The projection screen is a semi-transparent projection screen, and its surface is provided with a planar coordinate system and scale lines.

[0013] The beneficial effects of this utility model are as follows: The advantage of this utility model is that the gyroscope component optical system can be tested simply by fixing it on a simple tooling. There is no need for detectors or coolers, and there is no need to repeatedly assemble the gyroscope component into the whole product. This saves complicated disassembly and assembly processes, ensures the performance and quality of the product, reduces the impact of excessive disassembly and assembly on the performance of detectors (difficult to assemble, thin and easily broken signal lines) and coolers (throttling needles are easily bent), and enables the screening of poor-performing and unqualified gyroscope rotor optical systems. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a three-dimensional schematic diagram of the base and support.

[0016] Figure 3 This is a side view of the base and support.

[0017] Figure 4 This is a three-dimensional schematic diagram of the microscope tube.

[0018] Figure 5 This is a schematic diagram of an infrared conical scanning detection system with a tilted reflector.

[0019] In the diagram, 1 is the base, 2 is the support, 3 is the universal bracket, 4 is the stator, 5 is the visible light parallel light source, 6 is the projection screen, 7 is the lens barrel, 8 is the camera, and 9 is the rotor. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] like Figure 1-4 As shown, this utility model discloses a visible light-based gyroscope rotor scanning circle diameter measuring device, including a base 1, a support 2, a universal bracket 3, and a gyroscope rotor optical system. The gyroscope rotor optical system includes a stator 4, a rotor 9, and the universal bracket 3. The support 2 is mounted on the surface of the base 1, and the stator 4 is fixed on the support 2. A visible light parallel light source 5 is provided at one end of the rotor 9. A lens barrel 7 is provided inside the universal bracket 3, and a projection screen 6 is connected to one end of the lens barrel 7. The projection screen 6 is located on the focal plane of the gyroscope rotor optical system and is perpendicular to the optical axis of the gyroscope rotor optical system. The visible light parallel light source 5 is coaxial with the optical axis of the gyroscope rotor optical system. In one embodiment of this utility model, the base 1 has four threaded through holes for fixing an optical detection platform by screws. The upper end of the support 2 has an arc-shaped groove with an upper opening, and four screw holes are provided on the outside of the arc-shaped groove. The universal bracket 3 is fitted into the arc-shaped groove and is fastened to the upper end of the support 2 by screws provided in the screw holes.

[0022] In one embodiment of this utility model, the lens barrel 7 is coaxial with the optical axis of the gyroscope rotor optical system, and the projection screen 6 covers and is fixed to one end of the lens barrel 7. Specifically, the lens barrel 7 is a two-stage stepped shaft structure with an internal axial through hole. The large-diameter end of the lens barrel 7 is connected to the stator 4, and the small-diameter end is inserted into the universal bracket 3. When the lens barrel 7 is inserted into the universal bracket 3, it restricts the deflection of the universal bracket 3. The projection screen 6 is pasted and fixed to the end face of the small-diameter end of the lens barrel 7. The projection screen 6 is a semi-transparent projection screen, and its surface is provided with a plane coordinate system and scale lines. The origin of the plane coordinate system is located on the axis of the lens barrel 7.

[0023] In one embodiment of this utility model, a camera 8 is connected to the other end of the lens barrel 7. The camera 8 is inserted into the axial through hole of the lens barrel 7 and is located at the large diameter end of the lens barrel 7.

[0024] In one embodiment of this utility model, the camera 8 is connected to a computer.

[0025] In one embodiment of this utility model, the large-diameter end of the lens barrel 7 is connected to the stator 4 by a high-precision thread to ensure that the axial direction of the lens barrel 7 does not deflect during rotation.

[0026] The principle of this invention is as follows: This invention directly assembles the gyroscope rotor optical system 4 onto the tooling, places a visible light parallel light source 5 aligned with the optical axis, and uses visible parallel light to replace infrared light. During measurement, it is only necessary to turn on the power of the gyroscope rotor optical system 4 to make the rotor 9 rotate inside the stator 4. A scanning circle visible to the naked eye can be formed on the semi-transparent projection screen 6 on the lens barrel 7. Then, the diameter value of the scanning circle on the projection screen 6 is collected from the rear by the camera 8, and the diameter data is generated and recorded by the computer.

[0027] The parts of this utility model not described in detail are existing technologies.

Claims

1. A visible light-based gyroscope rotor scanning circle diameter measuring device, comprising a base (1), a support (2), and a gyroscope rotor optical system, wherein the gyroscope rotor optical system comprises a stator (4), a rotor (9), and a universal support (3), characterized in that: The support (2) is installed on the surface of the base (1), the stator (4) is fixed on the support (2), a visible light parallel light source (5) is provided at one end of the rotor (9), a lens tube (7) is provided inside the universal bracket (3), a projection screen (6) is connected to one end of the lens tube (7), the projection screen (6) is located on the focal plane of the gyroscope rotor optical system and is perpendicular to the optical axis of the gyroscope rotor optical system; the visible light parallel light source (5) is coaxial with the optical axis of the gyroscope rotor optical system.

2. The visible light-based gyroscope rotor scanning circle diameter measuring device according to claim 1, characterized in that: The lens barrel (7) is coaxial with the optical axis of the gyroscope rotor optical system, and the projection screen (6) covers and is fixed to one end of the lens barrel (7).

3. The visible light-based gyroscope rotor scanning circle diameter measuring device according to claim 2, characterized in that: The other end of the lens tube (7) is connected to a camera (8).

4. The visible light-based gyroscope rotor scanning circle diameter measuring device according to claim 3, characterized in that: The camera (8) is connected to the computer.

5. The visible light-based gyroscope rotor scanning circle diameter measuring device according to claim 2, characterized in that: The lens tube (7) is fixedly connected to the stator (4).

6. The visible light-based gyroscope rotor scanning circle diameter measuring device according to claim 1, characterized in that: The projection screen (6) is a semi-transparent projection screen with a planar coordinate system and scale lines on its surface.

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