An angle sensitive transmitter

Abstract

The present invention relates to an angle-sensitive transmitter, wherein a semicircular transmission platform is fixed at the top edge of the support frame, the top of the transmission platform is coated with a carbon film layer, a base is fixed at the center of the top of the support frame, one end of a cantilevered signal transmission rod is fixed at the center of the base, a brush assembly is welded to the other end of the cantilevered signal transmission rod, a hemispherical contact is fixed on the top of one end of the cantilevered signal transmission rod at the base, the brush assembly contacts the carbon film layer to receive angle-sensitive change signals, one end of a flexible conductive wire is welded to one side of the hemispherical contact, and the other end of the flexible conductive wire is welded to the bracket. The device can simultaneously achieve the technical effects of signal contact reliability and reduced contact friction torque by changing the signal transmission device from a shoulder pole type to a cantilever type and changing the sensitive angle signal from a brush contact type to a flexible conductive wire for transmission.

Description

Technical Field

[0001] The invention belongs to the technical field of sensors and relates to an angle sensitive transmitter. Background Art

[0002] A gyroscope is a device that uses the angular moment of a high-speed rotating body to detect the angular motion of a housing relative to an inertial space about one or two axes orthogonal to the axis of rotation. Angular motion detection devices based on other principles that perform the same function are also called gyroscopes. A frame-type gyroscope consists of a housing, a gas generator, a gimbal, and a sensor. The operating principle of a frame-type gyroscope is as follows: high-temperature, high-pressure gas generated by a gas generator propels the rotor to high-speed rotation. Due to the spatial stability of the high-speed rotor, the inner and outer frames of the gimbal achieve relative stillness in the inertial space. Sensors such as angle-sensitive transmitters convert the mechanical angle of the housing relative to the inner and outer frames into an electrical signal, thereby measuring the attitude angle of the projectile relative to the inertial space.

[0003] The angle-sensitive transmitter is the core component of a gas gyroscope. It consists of a substrate, a brush assembly, and a signal transmission device. The substrate is coated with a sensitive carbon film layer and a conductive carbon film layer. The sensitive carbon film layer senses angle signal changes, while the conductive carbon film layer serves as the signal conduction area. When the angle measured by the gyroscope changes, the brush assembly contacts the sensitive carbon film layer and transmits the angle change signal to the conductive film layer through the signal transmission device and the brush assembly, which is then transmitted. When the angle-sensitive transmitter operates in harsh environments with both vibration and shock, full contact between the brush assembly and the sensitive and conductive carbon film layers is required to ensure signal reliability. However, due to the shoulder-pole design of the signal transmission device in a confined assembly space, it is difficult to ensure full contact between the brush assemblies at both ends of the signal transmission device and the sensitive and conductive carbon film layers simultaneously during assembly. Consequently, when the gyroscope is subjected to severe up-and-down vibrations due to external forces, the brush assembly can become detached from the sensitive and conductive carbon film layers, resulting in unstable signal transmission and even sparks and large signal glitches. To ensure reliable signal transmission and contact between the angle-sensitive transmitter and the sensor, the height of the signal transmission device is currently adjusted by adding or removing shims to ensure full contact between the brush assembly and the sensitive and conductive carbon film layers. However, this creates significant friction between the brush assembly and the sensitive and conductive carbon film layers, leading to a significant increase in gyroscope drift and severely impacting product performance and yield. Balancing the signal contact reliability of the angle-sensitive transmitter and the yield of the gyroscope is a bottleneck in gyroscope development. Summary of the Invention

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and propose an angle-sensitive transmitter. By changing the signal transmission device from a shoulder pole type to a cantilever type and changing the sensitive angle signal from a brush contact type to a flexible conductive wire for transmission, the technical effects of signal contact reliability and reduction of contact friction torque can be achieved at the same time.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A kind of angle-sensitive transmitter, which is used for a gyroscope. The gyroscope includes a universal bracket, which includes an outer ring and an inner ring arranged inside the universal bracket. A support frame is provided on the top of the outer ring, and a semicircular transmission platform is fixed at the top edge of the support frame. The top of the transmission platform is coated with a carbon film layer. A base is fixed at the center position of the top of the support frame, and one end of a cantilevered signal transmission rod is fixed at the center of the base. A brush assembly is welded to the other end of the cantilevered signal transmission rod. A hemispherical contact is fixed on the top of one end of the cantilevered signal transmission rod. The brush assembly contacts the carbon film layer to receive angle-sensitive change signals. One end of a flexible conductive wire is welded to one side of the hemispherical contact, and the other end of the flexible conductive wire is welded to the bracket.

[0007] Furthermore, the height of the horizontal plane where the cantilever signal transmission rod is located is higher than the height of the horizontal plane where the carbon film layer is located.

[0008] Furthermore, the brush assembly includes a fixing plate and a special-shaped precious metal conductive wire welded to the fixing plate.

[0009] Furthermore, the fixing plate is in the shape of an elongated strip, and a portion of the fixing plate is welded to the top end of the cantilever signal transmission rod after being bent, while the end of the other portion contacts the carbon film layer.

[0010] Furthermore, the cantilever signal transmission rod is made of copper.

[0011] Furthermore, the cantilever signal transmission rod is in a sheet shape.

[0012] Furthermore, the bracket is fixed on a side of the support frame opposite to the transmission platform.

[0013] Furthermore, the flexible conductive wire is rod-shaped and in an X-shape.

[0014] Furthermore, a signal sensitive area is designed on the carbon film layer.

[0015] Furthermore, the base is a hexagonal prism.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] An angle-sensitive transmitter can simultaneously achieve the technical effects of signal contact reliability and reduced contact friction torque by changing the signal transmission device from a shoulder-pole type to a cantilever type and the transmission of sensitive angle signals from a brush contact type to a flexible conductive wire.

[0018] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are incorporated in and constitute a part of this specification and, together with the description, serve to explain the principles of the invention.

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0021] Figure 1 This is a front view of an angle-sensitive transmitter according to the present invention;

[0022] Figure 2 This is a top view of an angle-sensitive transmitter of the present invention;

[0023] Among them: 1. Support frame; 2. Transmission platform; 3. Carbon film layer; 4. Cantilever signal transmission rod; 5. Brush assembly; 6. Hemispherical contact; 7. Flexible conductive wire; 8. Bracket; 9. Base. DETAILED DESCRIPTION

[0024] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present invention. Rather, they are merely examples of arrangements consistent with certain aspects of the present invention as detailed in the appended claims.

[0025] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention is described in further detail below with reference to the accompanying drawings and embodiments.

[0026] An angle-sensitive transmitter for a gyroscope includes a universal bracket comprising an outer ring and an inner ring disposed therein. A support frame is disposed on top of the outer ring. A semicircular transmission platform 2 is fixed to the top edge of the support frame 1. The top of the transmission platform 2 is coated with a carbon film layer 3, and a signal-sensitive area is designed on the carbon film layer 3. A hexagonal prism-shaped base 9 is fixed to the center of the top of the support frame 1. One end of a cantilevered signal transmission rod 4 is fixed to the center of the base 9. A brush assembly 5 is welded to the other end of the cantilevered signal transmission rod 4. A hemispherical contact 6 is fixed to the top of one end of the cantilevered signal transmission rod 4. The brush assembly 5 contacts the carbon film layer 3 to receive angle-sensitive change signals. A flexible conductive wire 7 is rod-shaped and shaped like an "X". One end of the flexible conductive wire 7 is welded to one side of the hemispherical contact 6, and the other end is welded to a bracket 8. The bracket 8 is fixed to the side of the support frame 1 opposite the transmission platform 2. The height of the horizontal plane where the copper cantilever signal transmission rod 4 is located is higher than the height of the horizontal plane where the carbon film layer 3 is located.

[0027] The brush assembly 5 consists of a fixed plate and a shaped precious metal conductive filament welded to the plate. The fixed plate is a long strip, with one portion of the plate bent and welded to the top of the cantilevered signal transmission rod 4, while the other portion of the plate contacts the carbon film layer 3. When the angle measured by the gyroscope changes, the brush assembly 5 contacts the carbon film layer 3 and transmits the sensitive angle change signal through the cantilevered signal transmission rod 4 and the brush assembly 5 to the carbon film layer for transmission.

[0028] The cantilevered signal transmission rod 4 in the angle-sensitive transmitter replaces the shoulder-pole signal transmission device. This requires only controlling the deformation of the brush filaments in the brush assembly 5. With the same amount of brush filament deformation, the friction torque can be reduced by 50%. Furthermore, the cantilevered structure facilitates control of brush filament deformation. The use of a welded connection using flexible conductive wire 7 replaces the dynamic contact signal transmission method between the brush assembly 5 and the conductive carbon film layer. This ensures stable and reliable signal transmission, eliminating the issue of unstable signal transmission in harsh dynamic environments.

[0029] The foregoing description is intended only to provide specific embodiments of the present invention, which will enable those skilled in the art to understand and implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention.

[0030] It should be understood that the present invention is not limited to the above description and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. An angle-sensitive transmitter, wherein the angle-sensitive transmitter is used for a gyroscope, wherein the gyroscope comprises a universal bracket, wherein the universal bracket comprises an outer ring and an inner ring arranged inside the outer ring, wherein: A support frame (1) is provided at the top of the outer ring, a semicircular transmission platform (2) is fixed at the top edge of the support frame (1), a carbon film layer (3) is coated on the top of the transmission platform (2), a base (9) is fixed at the center of the top of the support frame (1), one end of a cantilever signal transmission rod (4) is fixed at the center of the base (9), a brush assembly (5) is welded to the other end of the cantilever signal transmission rod (4), a hemispherical contact (6) is fixed on the top of one end of the cantilever signal transmission rod (4) located at the base (9), the brush assembly (5) contacts the carbon film layer (3) to receive an angle-sensitive change signal, one end of a flexible conductive wire (7) is welded to one side of the hemispherical contact (6), and the other end of the flexible conductive wire (7) is welded to the bracket (8); The height of the horizontal plane where the cantilever signal transmission rod (4) is located is higher than the height of the horizontal plane where the carbon film layer (3) is located; The brush assembly (5) comprises a fixing plate and a special-shaped noble metal conductive wire welded on the fixing plate; The fixing plate is in the shape of a long strip, and after being bent, a portion of the fixing plate is welded to the top end of the cantilever signal transmission rod (4), and the end of the other portion is in contact with the carbon film layer (3).

2. An angle sensitive transmitter according to claim 1, characterized in that: The cantilever signal transmission rod (4) is made of copper.

3. The angle sensitive transmitter according to claim 1, characterized in that: The cantilever signal transmission rod (4) is in a sheet shape.

4. The angle sensitive transmitter according to claim 1, characterized in that: The bracket (8) is fixed on the side of the support frame (1) opposite to the transmission platform (2).

5. The angle sensitive transmitter according to claim 1, characterized in that: The flexible conductive wire (7) is rod-shaped and in the shape of an "X".

6. The angle sensitive transmitter according to claim 1, characterized in that: A signal sensitive area is designed on the carbon film layer (3).

7. The angle sensitive transmitter according to claim 1, characterized in that: The base (9) is a hexagonal prism.

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