异构型无线传感器网络的生命周期  

Lifetime analysis in heterogeneous wireless sensor networks

作　　者：张瑞华[1] 贾智平[1] 袁东风[2] 

机构地区：[1]山东大学计算机科学与技术学院,济南250061 [2]山东大学信息科学与工程学院,济南250100

出　　处：《吉林大学学报（工学版）》2008年第5期1136-1140,共5页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(90718032);教育部移动通信国家重点实验室开放基金项目(A2005010)

摘　　要：研究了一种异构型无线传感器网络的能量效率问题。该网络是具有不同初始能量的两类传感器节点以不同的数量均匀地分布在监测区域形成的,它基于簇的方式周期性采集数据传输到网关(sink)节点。本文对簇头节点和成员节点的能量消耗进行了数学建模,并且分析了网络的生命周期与检测区域参数之间的关系。通过理论分析和仿真结果得到了最大网络生命周期的最佳分簇数目以及不同层次节点的能量分配比例,并进一步导出了网络生命周期与簇头能量配置的关系。The energy consumption issue of a kind heterogeneous wireless sensor networks was studied. Two types of sensor with different battery power are assumed to be uniformly deployed in a sensing field, one with a singlelayer of identical sensors and other with an additional overlay of fewer but more powerful sensors, which forms a eterogeneous wireless sensor network and works in clustering approach. Two type sensor energy consumptions were formulated and their lifetime with varying parameters related to the sensing field was studied. According to the theoretical analysis and experiment results, the optical number of clusters based on our proposed sensor model was obtained and the energy allocation between different layers was given. In addition, a relationship between the network lifetimes and sensor energy was found.

关 键 词：人工智能 无线传感器网络 能量效率 分簇 异构网络 生命周期 

分 类 号：TP212.1[自动化与计算机技术—检测技术与自动化装置]