Calibration device of fiber-optic gyroscope inclinometer

Abstract

The invention discloses a calibration device of a fiber-optic gyroscope inclinometer, relates to the technical field of fiber-optic gyroscope inclinometers, and aims to solve the problem of coaxiality during fixing. The device specifically comprises a base, wherein the top of the base is connected with a clamping assembly through a rotating assembly, the clamping assembly comprises a main body and a clamping ring, four sliding grooves in a 90-degree circular array are formed in the inner wall of the main body, clamping jaws are slidably connected to the inner walls of the sliding grooves, arc-shaped pads are fixed to the outer walls of the clamping jaws through bolts, the clamping ring is rotationally connected with the main body, a limiting sliding column penetrating through the main body is fixed to the outer wall of the other side of the clamping jaw through a bolt, an arc-shaped groove matched with the limiting sliding column is formed in the inner wall of the clamping ring, teeth are arranged on the inner wall of the clamping ring and engaged with a planet wheel, and the planet wheel is fixedly connected with a worm wheel through a transmission shaft. According to the invention, the contact ratio of the axis of the clamped fiber-optic gyroscope inclinometer and the axis of the main body is relatively high, so that the accuracy of subsequent calibration is ensured.

Description

technical field [0001] The invention relates to the technical field of fiber optic gyro inclinometers, in particular to a calibration device for fiber optic gyro inclinometers. Background technique [0002] The fiber optic gyro inclinometer is an instrument that uses fiber optic gyroscopes, acceleration sensors and other components as sensing elements to determine the direction of borehole inclination by measuring the earth's rotation angular velocity vector. Because fiber optic gyroscopes and acceleration sensors are processed or installed , there is a certain deviation, and the fiber optic gyro inclinometer needs to be calibrated before use. [0003] At present, the more advanced calibration method of fiber optic gyro inclinometer is the patent of Chinese Patent Publication No. CN104792339B, which discloses a calibration method of fiber optic gyro inclinometer. Align the sensitive axis of the body and the fiber optic gyroscope with the true north direction, then change th...

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Problems solved by technology

[0004] For the analysis on the mechanical structure level, the above-mentioned patent actually fixes the fiber optic gyro inclinometer and the calibration device, and then the calibration device rotates the fiber optic gyro inclinometer from the X / Y / Z directions respectively, and then proceeds to collect the data. Analysis, it adopts the method of rotating the fiber optic gyro inclinometer, which is relatively simple and reliable for the whole calibration process, but it needs to have a good coaxiality when the fiber optic gyro inclinometer and the device are fixed, otherwise the angle will be different during the rotation process. Offset occurs, resulting in inaccurate data, and the present invention, based on the method of the above-mentioned patent, proposes a calibration device for an optical fiber gyroscope inclinometer, the purpose of which is to ensure that the optical fiber gyroscope inclinometer is fixed. The coaxiality of the axis and the center of rotation is high

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