无线传感网中三维覆盖控制和节点调度的研究

无线传感器网络中采用二元感知模型方法计算休眠冗余节点具有局限性和不精确性.本文考虑到实际应用环境对节点感知能力的影响以及传输过程中的路径损耗问题,对监测区域采用三维网格建模,并在概率感知模型的基础上提出一种概率感知衰减模型,同时对当前二维覆盖控制算法存在的各种局限性,提出了一种基于概率的分阶段冗余唤醒策略.仿真结果表明,该算法均衡了网络节点能量,实现了网络能耗的有效性,延长了网络的生存期.

Coverage Control and Node-scheduling for Three-dimensional Wireless Sensor Networks

The coverage control of wireless sensor networks is commonly based on duality apperceiving model which makes nodes dormancy.The algorithm in practical application has limitations and is not accurate enough.In consideration of the influence of node’s perceptive ability and the path loss parameters,the three-dimensional monitoring region will be divided into a grid,and this paper proposes a sensing probability attenuation model which is based on the probability-based model.In addition,aiming at the limitations of two-dimensional cover control algorithm,this paper focuses on proposing a probability-based phrased redundant and waking-up sensor strategy.The simulation results demonstrate that this method balances the node’s energy,realizies the maximum effectiveness of the network energy and extends the network lifetime.