Topology Control Mechanism of Gradation Wireless Sensor Network for Gas Monitoring and Control
Wei Yang · Coal science and technology · 2009
In order to improve the coal mine gas monitoring and measuring capacity,the paper provided and realized the topology mechanism of the gradation wireless sensor network based on the ZigBee protocol.The establishment procedure of the gradation network topological structure should include the establishment of the upper layer backbone network and the establishment of the low layer basic network.Whereas the establishment of the upper layer backbone network would also include the two procedures of the coordinator network establishment and the cluster head endpoint joining network.The ID distribution strategy of the network node was designed.The distribution procedure should include the cluster head endpoint distributed ID provided by the coordinator and the endpoint distributed ID provided by the cluster head endpoint.According to the variation problems of the network topological structure occurred during the network operation procedure,such as the terminal separated from or entered into the network,the relevant handling mechanism was designed.The lab and the coal mine site test results showed that the topologiy control mechanism provided could successfully generate the network and could have the relevant handling of the some topology structure variation occurred.