Multifunctional Miners Helmet Design based on Wireless Sensor Network Technology

Abstract

At present, domestic coal mine safety monitoring mainly realize the function of downhole data acquisition, such as the collection of gas, wind speed, temperature and other data.But the down hole data is not in full organization, use and manage on the inoue, meanwhile coal mine has the shortcoming of not flexible safety equipment , high defects of integration . This article design with three major functions : real-time monitoring of gas, precise positioning, lighting the of the miners helmets and PC (including the PC and the mobile terminal) monitoring systems. Taking miners helmet as the carrier, erected precise positioning systems and gas real-time monitoring system based on the acceleration sensor MPU6050 and meter step algorithm , we propose a suitable mobile node (Donetsk) more topologies, and by moving the nodes and fixed nodes signal transmission network to the monitoring center . This work test result shows that miners positioning error is less than 3m and gas monitoring systems , lighting function properly. China is the world's largest producer of coal, accounting for 31% of world production. While China's basic coal as an important energy and materials, occupies an extremely important strategic position in the national economy. In China's energy structure, coal accounts for 70% of China's primary energy production and consumption structure , and it will continue to be China's major coal energy in a fairly long period of time. Coal-dominated energy structure in the short term is difficult to change. However, compared with countries in the world, China's major coal-producing coal mines not only has more complex geological structure, mainly to underground mining, but also has more serious natural disasters. In recent years, China's coal mine accidents occur frequently, not only causing economic losses but also caused heavy casualties, the security issue has become the bottleneck of coal production. Statistics show that China's coal mines one million tons mortality rate is 100 times of the United States ,10 times of India's and economic losses caused in developing countries production safety accidents reached more than 2500 billion yuan .