Indexing mechanism of optic fiber gyroscope teaching experiment north seeker

Abstract

The present invention discloses an optical fiber gyroscope of North Finder in the teaching experiment of optical fiber gyroscope. The optical fiber gyroscope comprises a signal processing circuit board, a light source, a light source control circuit board, a waveguide, a coupler, a laser pen, a photodetector, a gyroscope frame, an organic glass shield, an upper cover, and a plurality of wire clamps. The organic glass shield is arranged on the upper cover; the upper cover is arranged on the gyroscope frame; the signal processing circuit board, the light source, the light source control circuit board, the waveguide, the coupler, the laser pen and the photodetector are arranged on the gyroscope frame. Based on the demonstration of the teaching experiment, the optical fiber gyroscope aims to show the principles of the North Finder which mainly consists of the optical fiber gyroscope, so that the experimenter can achieve the following purposes: (1) learning about the main physical principles of the optical fiber gyroscope, the Sagnac effect; 2) understanding the principles of the four-position method and the one-element linear regression method, and the basic method of eliminating errors; (3) finding the north by operating the experimental equipment by the students and simultaneously acquiring the latitude of the laboratory and rotation angular velocity of the earth; and (4) facilitating the further understanding of the students about the working principle and application of the optical fiber gyroscope, so that the students can basically understand the working principle of the optical fiber gyroscope, and the basic principles of modulation, demodulation and closed-loop work.

Description

technical field [0001] The invention relates to a fiber optic gyro structure of a fiber optic gyroscope teaching experiment north finder. Using a fiber optic gyroscope as an angular velocity sensor, a fiber optic gyroscope north finder suitable for teaching demonstrations is designed, which can realize the search for the geographic north pole and the earth axis north pole and the latitude and the measurement of the angular velocity of the Earth's rotation. Background technique [0002] The law of mechanics tells us that the observer closed in a "black box" cannot know his motion in the uniform linear motion. But if this "black box" has acceleration, then it is possible to detect its linear acceleration or rotation, which is the basic principle of inertial guidance and navigation. Knowing the initial orientation and position of the moving body, the attitude and trajectory of the moving body are obtained by (mathematically) integrating the measured acceleration and rotation r...

AI Technical Summary

Problems solved by technology

Of course, the original device was not a practical rotation rate sensor at all due to its very limited sensitivity

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