Light and small optical fiber gyroscope with good environmental adaptability

A fiber optic gyroscope technology with good environmental adaptability, applied in Sagnac effect gyroscopes, gyroscope/steering sensing equipment, instruments, etc.

Active Publication Date: 2021-09-10
BEIJING AEROSPACE TIMES OPTICAL ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The key technology to develop a light and small fiber optic gyroscope with good environmental adaptability includes ensuring the environmental adapta

Method used

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  • Light and small optical fiber gyroscope with good environmental adaptability
  • Light and small optical fiber gyroscope with good environmental adaptability
  • Light and small optical fiber gyroscope with good environmental adaptability

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Experimental program
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Embodiment 1

[0099] In this embodiment, a light and small fiber optic gyroscope with good environmental adaptability, the upper end cover 1 is 8g;

[0100] In the fiber optic ring installation assembly 2, the fiber optic ring upper cover 206 is 8g, the fiber optic ring base 201 is 38g, and the fiber optic ring assembly is made of iron-nickel alloy 1J85, which can meet the magnetic shielding requirements of the fiber optic gyroscope; Figure 5 As shown, the optical fiber ring adopts a four-level symmetrical winding method. The inner diameter of the optical fiber ring is not less than 40mm, the outer diameter is not greater than 53mm, and the height is not greater than 11mm; the wall thickness of the optical fiber ring base is 0.5-0.6mm, and the weight of the structural parts is only 38g.

[0101] The mounting base 4 is 33g; the mounting flange 3 is 26g; the total weight of the fiber optic gyroscope is 200g.

[0102] In this embodiment, the volume of the fiber optic gyroscope is 60mm×60mm×30...

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Abstract

The invention relates to a light and small optical fiber gyroscope structure with good environmental adaptability. A mounting base, an optical fiber ring mounting assembly, a mounting flange and an upper end cover are sequentially connected from bottom to top, and a gyroscope digital circuit board, a beam splitter and a Y waveguide are fixed on the mounting flange; in the optical fiber ring mounting assembly, an optical fiber ring base and an optical fiber ring upper cover form an annular cavity through a laser sealing welding process and are used for installing an optical fiber ring; and a gyroscope analog circuit, a temperature sensor and a light source are fixed on the mounting base. By designing the structure and used materials, miniaturization and light weight of the structural layout are realized, and the size and weight of the optical fiber gyroscope are reduced, so that the gyroscope is compact in overall structure, reasonable in layout, good in assembly manufacturability and small in size; a laser seal welding technology is adopted, so that magnetic leakage is reduced; a heat dissipation path is optimized, interference of a heat source on a heat-sensitive core component is reduced, temperature drift output by the optical fiber gyroscope is reduced, and output consistency and temperature stability of the gyroscope are improved.

Description

technical field [0001] The invention relates to the structural design technology of an optical fiber gyroscope, in particular to a light and small optical fiber gyroscope structure with better environmental adaptability, and belongs to the technical field of optical fiber gyroscopes. Background technique [0002] The gyroscope is the core device of various inertial measurement systems, which is used to measure the angular displacement and angular velocity of the sensitive carrier relative to the inertial space. [0003] As a new generation of inertial devices, the fiber optic gyro is based on special relativity and Sagnac effect, adopts all-solid-state structure and opto-mechanical integration technology, has no rotating parts and friction parts, and has a wide range of precision applications, fast response, large dynamic range and strong environmental adaptability , Low power consumption, simple structure, in principle, has the advantages of high reliability, long life, and...

Claims

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Application Information

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IPC IPC(8): G01C19/72
CPCG01C19/722
Inventor 何北闾晓琴李超张晚琛张峰王嘉铭许保祥左晨泽
Owner BEIJING AEROSPACE TIMES OPTICAL ELECTRONICS TECH
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