Comprehensive mechanization of coal mining can greatly increase labor productivity and accelerate the development of the coal industry. It is an important strategic measure to realize the modernization of the coal industry. The complete coal comprehensive mining system is mainly composed of four parts: hydraulic support, scraper conveyor, coal shearer and roadheader. The hydraulic support is used to support the mine roof during coal mining, forming a movable underground coal mining space , So that the scraper conveyor and coal shearer can work in this space. In the hydraulic support, the inclination sensor plays an important role in adjusting its posture to maintain the optimal support state.
The hydraulic support is mainly composed of a top beam, a column, an oil cylinder, a rear shield beam and a base. Due to the difference in the mine path and the change in the mining position during coal mining, the jacking height of the hydraulic support needs to be adjusted. The height of the jacking up is obviously related to the horizontal angle of the hydraulic support base, the top beam, and the angle and length of the vertical column when telescoping. Therefore, in the automatic control of the hydraulic support, the current angles of the top beam, the base and the column measured by the tilt sensor in the hydraulic support relative to the horizontal plane can get the geometric relationship between them, and according to the height of the jacking You can get the length of the column required to expand and contract. Finally, after determining the angle of each component, the hydraulic system can adjust the column to expand and contract to a specified length so that the hydraulic support is in a different jacking state.
Murata SCA100T-D01 is a dual-axis tilt sensor chip with a measurement angle of 30 ° in the SCA100T series. The product is based on 3D-MEMS technology and can provide instrument / instrument level measurement performance. The measurement axes of the two internal sensing elements are parallel to the installation plane and orthogonal to each other. The low temperature drift, high resolution, low noise, and robust design make the SCA100T an ideal choice for horizontal measurement. Murata's inclination sensor can also well resist the impact of vibration, and can withstand shocks of up to 20,000g, greatly improving the performance.
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