路由算法作为无线传感器网络的核心技术,对延长网络生命周期,提高网络效率起到了至关重要的作用.针对分布式能量有效成簇算法未考虑节点位置和对节点保护、利用不充分的问题,提出了一种改进的能量异构分簇路由算法.该算法引入边缘度的概念,使距离基站近的节点优先担任簇头,减少了网络能量消耗;设立了双能量阈值,提高节点能量利用,延长节点生命周期;综合考虑节点、簇头、基站三者的位置分布,提出了更合理的入簇机制.仿真结果显示,在小面积检测(10 m× 10 m到100 m×100 m)与大面积检测(100 m×100 m到500 m×500 m)环境下改进算法与原算法相比,网络生命周期分别提高了18.7%到36.2%,24.4%到66.5%.%As core technology of wireless sensor net,routing algorithm plays a crucial role in prolonging net life circle and improving net efficiency. The article puts forward an improved energy isomerism cluster routing algorithm aiming at troubles of distributed energy effective cluster algorithm in lack of consideration of node position,node protection and insufficient utilization. The algorithm introduces concept of margin degree,so as to enable node near to base station act as cluster head in priority,reduce net energy consumption;establishes double-energy threshold value,improves node energy utilization,prolongs node life circle;and the article puts forward more reasonable in-cluster mechanism under the comprehensive consideration of position distribution of node,cluster head and base sta-tion. The simulation results showed that compared with former algorithm,the net life circle of improved algorithm in-creased 18.7% to 36.2%,24.4% to 66.5% under the condition of small area detection(10 m×10 m to 100 m×100 m)and large area detection(100 m×100 m to 500 m×500 m).
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