Study On Wireless Communication Equipment Of The Management System Of Distributed Coalmine Underground Personnel And Equipment Safety

At present, coal mine safety production also has many problems, and the accident frequently happens, especially the extraordinarily serious security accident has not been under effective control, the situation remains grim .We all hold the opinion that it is both inevitable and necessary for us to establish an information-based and intellectualized program used on protection against disasters accident salvation for the key goal.The domestic existing system only can install certain monitoring substation in mine saps or in the common channels that all the people pass. So it only can keep watch on the mine worker in a certain area, but cannot achieve the function of all-the-way tracking and locate exactly, even more, leaking of reading and miscarriage of justice occurs frequently.This system uses the wire and wireless mixed network with architecture of two levels distribution, installed in each position of the underground substation and between the ground communication interfaces using the RS485 wire communication method to exchange the data. Taking every synthetic substation as the center, using ZIGBEE technology, the card reader and the identification card, we finally can form a small scope wireless intelligence network.The key of this article is studying the wireless communication equipment of this system-the card reader and the identification card, the card reader can cover random place of the mine shaft with a low cost, realize the coal mine worker's precise localization. When emergency happens, the card reader can set as the mobile working type for searching and rescuing, providing the position and azimuth information of the people nearby for the rescue group immediately.So this project may effectively solve the present problem of the domestic existing system, provide the stable and reliable management, the system of searching and rescuing for the workers in the coal mine, and also achieve full coverage of the signal in the coal mine. Once the accident happens, we can carry on search and rescue accurately as fast as we can.