A Mobile Network Protocol And Node Localization Algorithms For Mine Wireless Sensor Network

Currently one of the hotspots for underground safety monitoring is wirelesssensor network technology. In this paper, according to the the mine specificenvironmental conditions, mobile networking protocol for wireless sensor networkMAC and routing layer, mobile node localization algorithms to improve mineunderground track positioning and mobile devices scheduling managementtechnical level of underground wireless sensor networks is researched. In this paper,the work done as follows:1, According to mine structural features and underground wireless sensornetwork signaling environment, the ZigBee (IEEE802.15.4protocol) protocolwhich due to the network topology type and signal transmission needs is selected.2, LE-MAC protocol which is suitable for underground wireless sensornetworks is researched. An mechanism for anchor nodes broadcast positioninginformation packets is adopted, if no packet is received in a single cycle, the nextcycle wake-up phase beginning of initiating packets. A LE message format is givenwhich including the RTS, CTS, node ID and reservation information that allows themobile node to dynamically adjust the sleep time busy channel communication, notonly reduces energy consumption, while reducing the the delay.3, A improved LEACH dynamic clustering routing protocol algorithm isresearched. Each cycle of the algorithm to select the cluster head according to theresidual energy and distance of the mobile node anchor node distance, making asingle mobile node does not frequently lead to high energy consumption as a clusterhead node, each mobile within the cluster average basic energy consumption of thenode, extending the network life time are allowed by the mechanism.4, A mobile node positioning algorithm of underground wireless sensornetwork is given. The Kalman filter to estimate the distance of the RSSI signalstrength and the mobile node from the anchor node of the algorithm are used, andthen a flexible network algorithm for correction is adopted which to achieve thepurpose of precise positioning.Matlab platform simulation experiments is used, the entire mine wirelesssensor networks, mobile node localization algorithm simulation of the system, andthe experimental results are analyzed and evaluated. In this paper, the positioningaccuracy of the algorithm, the effect is good, may provide a new approach for the mine personnel positioning.