关键词: 无线传感器网络, 分簇, 层次型路由协议, 能量有效

Abstract: To ameliorate the situation that some nodes die too early due to the uneven energy consumption in LEACH，the energy efficient hierarchical routing protocol in wireless sensor networks（EEHRP） is proposed，which uses intelligent delay mechanism to choose the cluster head.The nodes which have higher residual energy are earlier to declare cluster head than the lower ones around.Gateway nodes are introduced in routing algorithm，which can make cluster head turn away overfull energy consumption for long distance transmission.Simulation results demonstrate that the energy consumption is more even in EEHRP so as to prolong network lifetime effectively.

Key words: wireless sensor networks, clustering, hierarchical routing protocol, energy efficient