A positioning device for underground personnel of a coal mine based on visible light communication

Abstract

The invention belongs to the technical field of positioning devices, in particular to a positioning device for coal mine underground personnel based on visible light communication, comprises an imageacquisition module and an audio acquisition module, the output ends of the image acquisition module and the audio acquisition module are electrically connected with the input end of the format conversion module, the output end of the format conversion module is electrically connected with the input end of the signal processing module, the input end of the signal processing module is electrically connected with the input end of the harmful gas sensor, the output end of the signal processing module is electrically connected with the input end of the LED driving module. Through the dynamic and comprehensive monitoring of harmful gases under the mine, based on the visible light communication technology, the system eliminates the beat frequency noise, greatly improves the reception signal-to-noise ratio, and can use the miner's lamp worn on the miner and the LED lamp arranged in the roadway and the working face to realize the accurate personnel positioning, thereby greatly improving the safety factor.

Description

technical field [0001] The invention relates to the technical field of positioning devices, in particular to a positioning device for underground personnel in coal mines based on visible light communication. Background technique [0002] In recent years, my country's coal mine safety accidents have occurred frequently, resulting in heavy casualties and huge economic losses. The issue of coal mine safety production has attracted the attention of all sectors of society. When a coal mine safety accident occurs, the on-site environment is complex and harsh, full of unknown and uncertain factors, which seriously threatens the life safety of search and rescue personnel and brings severe challenges to the deployment and implementation of search and rescue work. Therefore, it is necessary to monitor the underground environment of mine personnel. The existing monitoring methods are usually based on radio communication technology. Radio communication is subject to noise interference a...

AI Technical Summary

Problems solved by technology

When a coal mine safety accident occurs, the on-site environment is complex and harsh, full of unknown and uncertain factors, which seriously threatens the life safety of search and rescue personnel and brings severe challenges to the deployment and implementation of search and rescue work

Therefore, it is necessary to monitor the underground environment of mine personnel. The existing monitoring methods are usually based on radio communication technology. Radio communication is subject to noise interference and limited space in underground mines, resulting in poor communication quality and narrow bandwidth. In turn, the monitoring efficiency is reduced, and when an accident occurs, the personnel in the mine cannot escape in time

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