基于事件触发的无线传感器网络动态分簇

针对由目标事件激发的无线传感器网络动态分簇问题，提出了一种动态分簇协议。着重研究了簇头竞选，成员招募和簇重组等关键环节，在簇头竞选机制中，提出了一种综合考虑了节点接收信号强度，剩余能量以及与汇聚节点的距离等因素的竞选方案。在簇成员招募阶段，提出了一种基于任务需求的自适应簇范围划分方法，约束了簇的规模，降低了簇内通信的能耗。仿真结果表明：该协议能够有效地节省节点能量，延长网络寿命，尤其适用于汇聚节点距离网络较远的情况。

Dynamic Clustering for Wireless Sensor Networks Based on Event Triggering

In order to solve the problem of dynamic clustering for wireless sensor networks（WSN） triggered by target event, a dynamic clustering protocol, focusing on duster head selection, cluster member recruitment and cluster reorganization, is proposed. In cluster head selection mechanism, the lnoposcd selection approach takes the node sensing information, node＇s power and distance between node and sink node into consideration. In cluster member recruitment, an adaptive method based on task requirement is proposed in terms of cluster range setting~ through this method, the cluster size is constrained and the energy consumption of intra-cluster communication is reduced. The sim- ulation results show that the proposed protocol can efficiently conserve energy and prolong the lifetime of WSN, especially when the sink node is located far from the network.