多址接入无线传感器网络覆盖控制算法研究

Research on Coverage Control Algorithm of Wireless Sensor Networks with Multiple Access

为有效降低网络能量消耗,提升无线传感器网络覆盖控制效果,研究多址接入无线传感器网络覆盖控制算法。通过布尔感知模型判别与检测多址接入无线传感器网络内冗余节点,并对所检测出的冗余节点实施休眠。在此基础上建立概率感知模型并确定覆盖概率极限,运用概率感知模型针对冗余节点休眠后目标区间的强感知力节点与弱感知力节点构建覆盖集,结合两种覆盖集与覆盖概率极限实现对多址接入无线传感器网络的覆盖控制。结果表明,上述算法能够有效去除无线传感器网络内冗余节点,控制网络覆盖程度的效果显著;在上述算法的控制下,网络目标区间的整体能量消耗较低,具有显著的节约无线传感器网络能耗的效果,有助于多址接入无线传感器网络使用寿命的延长。

In order to effectively reduce network energy consumption and improve the coverage control of wireless sensor network,this paper presented an algorithm to control the coverage of wireless sensor network with multiple access.The Boolean sensing model was used to identify and detect redundant nodes in multi-access wireless sensor network.And then,these redundant nodes were put into sleep.On this basis,the probability perceptive model was built and the coverage probability limit was determined.After the redundant nodes slept,the probability perceptive model was used to construct the coverage set for the nodes with strong and weak perception in target interval.Finally,the coverage control of multi-access wireless sensor network was completed by combining the two coverage sets with the coverage probability limit.Following conclusions can be drawn from research results.The proposed algorithm can effectively remove the redundant nodes in wireless sensor network,and the effect of controlling network coverage is significant.Under the control of the algorithm,the overall energy consumption of the target area in network is low.Therefore,the algorithm has a significant effect of saving energy consumption of wireless sensor network,which is helpful to extend the service life of wireless sensor network with multiple access.