Damp-proof and vibration-proof skeleton-removed fiber-optic gyroscope

Abstract

The invention provides a moisture-proof and vibration-proof skeletal fiber-optic gyroscope, and solves the problems of low sealing performance and poor vibration of a fiber-optic ring of the existingskeletal fiber-optic gyroscope. The gyroscope comprises a gyroscope table body, an optical fiber ring module and an insulating rubber annular pad; the optical fiber ring module is arranged on the gyroscope table body; a gap is formed between the optical fiber ring module and the gyroscope table body; the insulating rubber annular pad is arranged at the gap; the optical fiber ring module comprisesan optical fiber ring mounting framework, an annular cover plate, a protective sleeve and an optical fiber ring; the optical fiber ring mounting framework comprises a mounting framework inner barrel,a mounting framework outer barrel and an annular bottom plate; and an annular sealing cavity is formed by the optical fiber ring mounting framework and the annular cover plate; the optical fiber ringis bonded in the annular sealing cavity through an adhesive; a tail fiber of the optical fiber ring is sleeved in the protective sleeve, is led out from a fiber passing channel and is connected with an optical device tail fiber on the gyroscope table body; and gaps between the tail fiber and the protective sleeve, between the protective sleeve and the annular cover plate, and between the protective sleeve and the mounting framework inner barrel are filled with sealants.

Description

technical field [0001] The invention belongs to the field of fiber optic gyroscopes, in particular to a deskeleton fiber optic gyroscope that is moisture-proof and vibration-resistant. Background technique [0002] Fiber optic gyroscopes have the advantages of high sensitivity, long life, large dynamic range, and short start-up time, and have been widely used in inertial navigation systems. [0003] Deboned fiber optic gyroscope is a new type of fiber optic gyroscope produced in recent years. The gyroscope is usually composed of a combination of fiber optic ring module, digital demodulation circuit, light source drive circuit, SLD light source, 1×2 coupler, and PIN-FET components. The fiber optic ring module includes a fiber optic ring, which is the core component of the fiber optic gyroscope, and is used to sense the Sagnac (Sagnac) phase difference between two oppositely propagating light waves caused by the input angular velocity. Changes in air pressure, water vapor and...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the technical problems of low fiber ring sealing and poor vibration in the existing deskeleton fiber optic gyroscope, the present invention provides a deskeleton fiber optic gyroscope that is moisture-proof and anti-vibration

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