Study On Through-the-earth Communication Technology In Mine Environment

Coal mine production is in a special environment, the communication system alsohave higher requirements. In recent years, along with our country mining industrydevelopment, it is often seen. Mine accident, at this time we need a good communicationemergency means to meet the needs of production. Low frequency through thecommunication system uses the earth as the carrier communication signals, due to itscharacteristics of the channel from the mine disaster impact, the system is considered to bethe most reliable production and emergency communication method.This paper describes the current domestic wireless communication technologydevelopment status, analysis of modern coal enterprises in the production of how to usewireless communication mode to assist in safe production. The second study of earthmedium characteristics, discusses the radio waves to the earth in media communicationtransmission parameters, as well as a variety of effects, obtained suitable through-the-earthcommunication frequency; and put forward the earth media layered structure model,calculated the through-the-earth communication in to the earth as medium forcommunication, reflection coefficient, transmission coefficient, absorption coefficient inthe hierarchical structure model is generated by a corresponding change. This paper hasdiscussed the applicability of mine through-the-earth communication antenna selection,and the calculation of the antenna parameters. Finally it studies the application in minethrough-the-earth communication system transmitter/receiver principle, proposed thesystem scheme, and using Matlab/Simulink software for communication BER simulation,the simulation results show that: the subject of the mine through the wirelesscommunication system can satisfy the safe production in the mine accident rescue needs.In this paper, the conclusion for the mine through-the-earth communication system isdesigned to provide a theoretical support for modern coal enterprise production safety andaccident rescue work has certain practical significance.