Mine gyroscope attitude measurement instrument

Abstract

The invention discloses a mine gyroscope attitude measurement instrument, which comprises a host and a slave machine that are matched to be used for measuring attitude angles, including azimuth angles, front and rear inclination angles and left and right inclination angles of mine drilling equipment. The host has a north finding function, mainly comprises a cuboid shell, a dynamically tuned gyroscope, a three-axis accelerometer, a control chip, a display control device and a power supply part, and is used for measuring earth rotation angular velocity components so as to measure the included angle between the host baseline and the true north; the slave machine mainly comprises a cuboid shell, a micromechanical gyroscope, a three-axis accelerometer, a control chip, a display control device and a power supply part, and is used for measuring the azimuth rotation variable quantity, front and rear inclination angles and left and right inclination angles of the slave baseline relative to the host baseline. The host and the slave machine are matched to be used for measuring three attitude angles of the mine drilling equipment. The mine gyroscope attitude measurement instrument provided by the invention does not need GPS signals, is free from magnetic interference, and is suitable for measuring the attitude angles of drilling equipment for an underground coal mine.

Description

technical field [0001] The invention relates to the technical field of attitude measurement of mining drilling equipment, in particular to a mine gyro attitude measuring instrument. Background technique [0002] In the process of drilling or detection, coal mine drilling equipment needs to adjust its attitude angle (azimuth angle and two-way inclination angle) to meet the drilling process requirements, so a device is needed to accurately measure its attitude angle; since there is no GPS in the mine At present, the commonly used method is to use the magnetic compass measurement and the measurement method based on the centerline of the roadway. Since the drilling equipment is generally made of ferromagnetic materials, it will interfere with the direction of the earth’s magnetic field, which will bring greater problems to the magnetic compass measurement method. Measurement error (sometimes more than 10°); when measuring with the center line of the roadway as the reference, the...

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Problems solved by technology

[0002] In the process of drilling or detection, coal mine drilling equipment needs to adjust its attitude angle (azimuth angle and two-way inclination angle) to meet the drilling process requirements, so a device is needed to accurately measure its attitude angle; since there is no GPS in the mine At present, the commonly used method is to use the magnetic compass measurement and the measurement method based on the centerline of the roadway. Since the drilling equipment is generally made of ferromagnetic materials, it will interfere with the direction of the earth’s magnetic field, which will bring greater problems to the magnetic compass measurement method. Measurement error (sometimes more than 10°); when measuring with the center line of the roadway as the reference, the method of finding the center line is currently mostly achieved by manually pulling the line, and then using a protractor to measure the angle between the drilling equipment and the center line, pulling the line and measuring When the angle is included, the error introduced by human factors is relatively large, and the error of the two processes is a cumulative error, so the measurement error of the final azimuth angle is relatively large, especially when the roadway has an inclination angle or the roadway is curved

From the above, in the attitude measurement process, the precise measurement of the azimuth angle is difficult

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