Five-axis redundant fiber-optic gyroscope measuring device structure

Abstract

The invention relates to a five-axis redundant fiber-optic gyroscope measuring device structure, and belongs to the technical field of inertial measurement. The structure comprises a box body, a system circuit assembly, an instrument assembly, an upper cover conductive sealing ring, a first sealing connector, a second sealing connector, a power supply assembly and a bottom cover conductive sealing ring, wherein the upper cover conductive sealing ring is arranged at the top opening of the box body; the instrument assembly is arranged in the inner cavity of the box body; the system circuit assembly is installed at the top opening of the box body; the bottom cover conductive sealing ring is arranged around the top end of the power supply assembly; the power supply assembly is in butt joint with the bottom opening of the box body; the first sealing connector and the second sealing connector are arranged on the same side wall of the box body; and the first sealing connector is located above the second sealing connector. According to the invention, five inertial instruments and five accelerometers work independently and are in redundant configuration, the space is utilized reasonably, and the structure has the advantages of small size, light weight, good heat dissipation, good assembly manufacturability and the like.

Description

technical field [0001] The invention belongs to the technical field of inertial measurement and relates to a structure of a five-axis redundant optical fiber gyro measurement device. Background technique [0002] With the development of integrated navigation technology, strapdown inertial group / inertial navigation is playing an increasingly important role in the field of navigation due to its advantages of low cost and easy maintenance, and the requirements for the accuracy and reliability of inertial sensors are also increasing. [0003] Optical fiber gyro is a new type of all-solid-state sensor that uses optical fiber sensing technology to measure space inertial rotation. It has the advantages of high precision, high reliability, and long life. application. [0004] However, most of the existing fiber optic gyroscope inertial measurement modules adopt a three-axis design scheme, and there is no redundant design of inertial instruments. When any one of the axes fails, it c...

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Problems solved by technology

[0004] However, most of the existing fiber optic gyroscope inertial measurement modules adopt a three-axis design scheme, and there is no redundant design of inertial instruments. When any one of the axes fails, it cannot provide the attitude of the three axes relative to the inertial space.

Due to the non-redundant design of the inertial instrument and the secondary power supply, there is a single point of failure in the system. In order to achieve high reliability, the price to be paid is often much higher than that of the multi-axis redundant solution.

In addition, in order to meet the requirements of high-precision measurement, the fiber optic gyroscope inertial measurement module has high power consumption, poor heat dissipation of the shock absorber, large volume, and relatively large weight

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