Strata displacement monitor and system

Abstract

This invention relates to a terrane shift monitor including a shift sensor unit, an information collecting and processing unit, in which, the shift sensor unit includes: a shift wheel, a grating wheel, a grating sheet, a pull-up line and a tension unit, in which, the grating ring and the sheet are in the groove of a photoelectric coupler, the pull-up line windes the displacement wheel tightly, the output of the photoelectric coupler is connected with the input end of the information collection and processing unit composed of single-chip control, acoustooptic alarm, radio communication, RS485 communication and a supply conversion module, this monitor, a communication host and remote controller make up of a system, and the communication host can communicate with the PC, the monitor is fixed on the appearance terrane, the pull-up line is fixed on the internal terrane, its line displacement generates interference fringes by the relative movement of the two gratings to test the line displacement volume between terranes accurately to compute the change rate of the displacement.

Description

technical field [0001] The invention relates to a rock section measuring instrument, in particular to a rock displacement monitor capable of measuring displacement between rock layers and coal seams. Background technique [0002] At present, there are many types of sensors and monitors for detecting displacement in engineering, each with its own characteristics and scope of application. Monitoring and forecasting instruments are rare, especially the real-time automatic monitoring of high precision and large displacement is almost blank. Safety accidents caused by roof fall, bottom sill, rockburst, etc. caused by internal displacement changes of roof (bottom) slabs, coal pillars, etc. So far, there is still a lack of reliable, real-time automatic monitoring and forecasting instruments, especially in coal mining, there is still a lack of real-time automatic monitoring and forecasting of underground roadway displacement on the ground. [0003] In the patent application No. 20...

AI Technical Summary

Problems solved by technology

[0005] 1. The cylindrical shell is suitable for being buried inside the rock mass, and it may affect the work when installed in the roadway;

[0006] 2. The layered installation process of the displacement sensor unit and the information detection and processing unit in the cylindrical shell is relatively complicated;

[0007] 3. The display on the casing is not very convenient to observe in the roadway;

[0008] 4. The length of the tension line is limited, and the effective range is less than 200mm

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