Abstract: In clustering architectures, the selection of Cluster Heads（CHs） has an important influence on the energy consumption of Wireless Sensor Networks（WSNs）.  A CHs Sending Energy Consumption based CHs Selection algorithm （SECCS） is proposed. If a node has been a CH already, it temporarily can’t be a CH again. How long a node can’t be a CH is decided according to the sending energy consumption during it is a CH and the number of the nodes that can be CHs. In the selection of CHs, the minimum distance between two CHs is limited. A node with a reasonable number of neighbor nodes is more likely to become a CH if the neighbor nodes are close, so the CHs are distributed as evenly as possible. SECCS is a simple algorithm and does not need nodes residual energy or position. Simulation results show that the algorithm can promote the networks lifetime.

Key words: wireless sensor networks, routing algorithm, clustering, network lifetime

摘要： 分簇算法中，簇头的选择对无线传感器网络的能耗有重要的影响，为了提高网络生存周期，提出了一种基于簇头发送能耗的簇头选择算法（SECCS）。为了平衡节点间的不同能耗，使已做过簇头的节点在其后若干轮内不能再次成为簇头，其预计不能做簇头的轮次根据簇头发送能耗来决定，并动态调整不能做簇头的轮次，保证候选节点数量在合适的范围内。在选择簇头时，限制簇头间的距离不能过小，并优先选择周围节点数量适中而平均距离较近的节点成为簇头，使簇头尽可能均匀分布以减少全网能耗。该算法不需要节点的剩余能量和位置信息，计算简单。通过仿真和数据分析，证明其网络生存周期较长。

关键词: 无线传感器网络, 路由算法, 分簇, 网络生存周期