最佳节点找寻下传感节点优化部署覆盖仿真

在传感节点部署过程中,节点的密度影响节点覆盖,密度过低会导致覆盖不足,无法捕捉到关键信息;密度过高则会浪费资源和增加成本。因此,提出最佳节点找寻下传感节点部署覆盖优化方法。建立传感节点概率感知衰减模型,获取传感网络中传感节点的应用环境。通过全局传感网络冗余节点休眠算法,对冗余节点执行休眠操作,以此减少网络能耗;计算传感网络覆盖率,并将传感网络最大覆盖率和最小传感节点利用率作为传感节点部署覆盖优化目标函数;引入鱼群算法和粒子群算法求解,同步对最佳传感节点位置迭代寻优,以此实现最佳节点找寻下传感节点部署覆盖优化。实验结果表明,所提方法的网络覆盖率高,能够有效降低节点能耗,且运行时间短,增强了网络寿命。

Design of maximizing homogeneous and heterogeneous clustered sensor network lifetime

Aimed at the problem of unbalanced energy existed in sensor networks, the clustered method is employed to enhance the efficient utilization of limited energy resources of the deployed sensor nodes. In this paper, we describe the network lifetime as a function of the communication and data aggregation energy consumption and analyze the lifetime of different transmission schemes in the homogeneous and heterogeneous sensor networks. The analysis carried out in this paper can provide the guidelines for network deployment and protocol design in the future applications.