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井下无线传感器网络中的信标节点无法及时获得能源补充,能量水平总体偏低,结合井下网络的特点研究能降低信标节点能耗、延长信标节点服务时间的路由算法对井下无线传感器网络十分必要.通过对井下传感器网络的能量补充方式和节点移动特点的分析,提出了一种基于位置估计的多跳路由(position estimatebased multi-hop route,PEBHR)协议,该协议通过位置估计的方法帮助节点选择恰当的移动节点作为数据中继快速建立路由路径,从而由能量水平较高的移动节点承担主要的数据转发任务,减少能量水平相对较低的信标节点的负载,从而延长信标节点的生存时间.仿真结果表明PEBHR协议能够降低信标节点的能量消耗,有效延长信标节点的生存时间,有效解决井下节点能量不平衡的问题.
Downlink WSN beacon nodes can not get energy supplement in time, and the energy level is generally low. Based on the characteristics of the downhole network, this paper studies the routing algorithm that can reduce the energy consumption of beacon nodes and extend the beacon node service time. It is necessary to establish a position estimate based multi-hop routing (PEBHR) protocol by analyzing the energy supplement mode and node movement characteristics of the downhole sensor network. This protocol uses the location estimation method to help node Select the appropriate mobile node as the data relay to quickly establish the routing path so that the mobile node with a higher energy level can undertake the main data forwarding task and reduce the load of the beacon node with a relatively lower energy level so as to prolong the survival of the beacon node Time.The simulation results show that the PEBHR protocol can reduce the energy consumption of beacon nodes and effectively extend the survival time of beacon nodes and effectively solve the energy imbalance problem of downhole nodes.