Wireless Sensor Network Protocol Research Based On Coal Mine Environment

As a pillar industry of China’s energy field, the coal industry has received wide attention. Especially in the past decade, due to the increasing exploitation, the occurrence of coalmine accident has growing rapidly. Workers under coalmine have faced huge threats. But the existing coal mine safety monitoring technology is not yet able for timely and accurate warning, which requires the introduction of new technologies to improve mine safety protection.Wireless sensor network monitoring system, expected as an important part of building the new mine safety system in the future, can be greatly improvement and supplement of the issue. But the existing wireless sensor networks are still not suit for the under mine heterogeneous environments, it is necessary to set a reasonable routing protocol based on mine specific spatial structure, so that it can effectively balance the network energy.The article first studied the structure and characteristics of wireless sensor networks, to familiar with its applications. Then simulate, analyse, and compare the existing routing protocols. By learning the advantages of classical routing protocols and applications, summarize the characteristics of the suitable mine routing protocol implementation.In the end the paper presents a multi-hop energy priorities clustering routing protocol called PEMHCH (power-efficient multi-hop cluster hierarchy). PEMHCH bases on node energy and quantizes signal strength between nodes, then introduces a new network clustering model, and proposes a concept to decide the pros and cons in nodes communications using weigh. It can not only significantly save the packet of data in computing clusters, but also help PEMHCH build a multi-hop routing in each cluster, and find the shortest path transmitted to the sink node. PEMHCH solves some of the limitations of traditional routing protocols in restricted space, while achieves a balanced cluster size. Simulation experiments show PEMHCH significantly balances the cost of the network.