一种低能耗的WSN覆盖控制优化策略

摘要

Aiming at problems of poor adaptability and complex calculation of node distribution density for the traditional node deployment strategy,a Wireless Sensor Network(WSN)coverage control optimization strategy based on adjustable node distribution density and hybrid scheduling of redundant nodes is proposed.An adjustable parameter is introduced to make a certain proportion of nodes uniformly distributed in the whole monitoring area,and the remaining nodes are deployed in a certain density relationship.A hybrid scheduling strategy of redundant nodes is realized by combining the node scheduling algorithm of Redundant Node Judging Based on Grid(RNJBG)and the Energy Balanced Non-uniform Distribution Node Scheduling Algorithm(EBNDNS)to optimize network coverage.The simulation results show that the strategy can effectively prolong the network lifetime under the premise of ensuring the quality of network coverage.%针对传统节点部署策略适应性差、节点分布密度计算复杂等问题，提出基于节点分布密度自适应和冗余节点混合调度的 WSN覆盖控制优化策略。引入可调参数使得一定比例的节点在监测区域均匀部署，剩余节点按不同的密度部署在各子区域。结合基于网格冗余节点判定机制的节点调度算法和能量均衡的非均匀分布节点调度算法进行冗余节点混合调度，从而优化网络覆盖。仿真结果表明，该策略在保证网络覆盖质量的前提下，能有效延长网络生存时间。