中文摘要：

无线传感器网络是传感技术、计算技术和通信技术的融合．由于传感器节点的能量限制，能量效率是设计无线传感器网络所关注的一个主要内容．文章主要研究网络节点如何配置使系统能量效率提高．通过时传感器节点无线通信能耗模型的扩展，在两种线性网络模型下，分析并仿真实现了多数据源负载时的系统能耗；通过对比分析，在无线传感器网络节点配置时，提出两种有效可行的配置机制：节点等间距放置和优化间距放置．这两种机制对提高能量效率，延长网络寿命提供了很大的帮助．

英文摘要：

Wireless sensor network combines sensing, computation and communication. Duo to limited energy, energy efficiency of sensors is a main concern for the design of wireless sensor networks. One of the most important design criteria for this type of network is energy efficiency. Based on two linear traffic models and an extension of energy consumption model of the sensor node, we consid- er different multi-hop scenarios to compute the energy consumption and energy efficiency of the whole network. Through analyzing these results, we present two valid deployment mechanisms of sensor nodes. The first mechanism is that nodes are deployed with e- quidistant spacing;Another mechanism is that nodes are deployed with optimal spacing. Simulation results show that two mechanisms are good and useful with energy efficiency in wireless sensor networks.