On-line monitoring method of support running posture based on fiber grating sensing

Abstract

Belonging to support operation posture on-line monitoring methods, the invention relates to a support operation posture on-line monitoring method based on fiber bragg grating sensing. Part of a to-be-monitored hydraulic support is selected as a collection substation, a pressure fiber bragg grating sensor, a displacement fiber bragg grating sensor and inclination angle fiber bragg grating sensors are installed on the hydraulic support in the collection substation, the tail fibers of all the sensors are connected to a mine optical cable through a junction box, and the mine optical cable transmits optical signals to a fiber bragg grating demodulator; the fiber bragg grating demodulator demodulates optical signals into digital signals and transmits the digital signals into a computer system for saving and analysis, human-computer interaction is realized through a screen and a keyboard, thus achieving real-time monitoring of the hydraulic support's operation posture. The method provided by the invention has the advantages that: underground field passive work guarantees the working face safety; the fiber bragg grating sensing technology and optical fiber transmission technology are employed, and the anti-electromagnetic interference ability is strong; temperature compensation grating temperature error is employed for compensation to improve the monitoring accuracy; the method realizes online monitoring of the support operation posture, and is conducive to guiding field production and scientific research.

Description

technical field [0001] The invention relates to an online monitoring method for the running attitude of a support, in particular to an online monitoring method for the running attitude of a support based on fiber grating sensing. Background technique [0002] Fully mechanized mining is the direction of my country's development of coal production mechanization. At present, my country has a large number of fully mechanized mining equipment. The application of fully mechanized mining equipment is a measure to improve efficiency and safety. However, the development is unbalanced, and some have low operating rates. One of the main factors affecting the operating rate is how well the support controls the roof of the working face. Therefore, it is necessary to monitor and control the mine pressure on the fully mechanized mining face. To achieve this, it is first necessary to monitor the actual working conditions of the hydraulic support in the underground working face, and evalua...

AI Technical Summary

Problems solved by technology

[0003] Although some development has been achieved in the field of artificial intelligence monitoring at home and abroad, the existing support attitude monitoring system generally has the following disadvantages: 1. Low work efficiency, unable to realize online real-time monitoring; 2. Susceptible to electromagnetic interference and external Environmental interference cannot meet the downhole operating conditions; 3. The monitoring accuracy is not high; 4. The service life of the equipment is short and cannot meet the requirements of long-term monitoring

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