线形异构传感器的网络生命周期

Lifetime of Line Heterogeneous Wireless Sensor Networks

无线传感器网络的能耗决定了网络的生命周期,如何有效部署传感器节点来延长网络的生命周期是一个重要的研究课题。针对由高级节点和普通节点组成的线形异构传感器网络,给出了最大化网络生命周期模型。通过分析节点的能量消耗,求解出了两种节点的分配比例,得出了最大化网络生命周期的节点部署方案。

The lifetime of a wireless sensor network（WSN） directly lies in the power consumption of the network. Thus one of the important problems is how to deploy the sensor nodes efficiently to prolong the lifetime of the sensor network.A maximizing lifetime model is proposed by analyzing a line heterogeneous wireless sensor networks which consist of two types of nodes：one is advanced nodes,the other is normal nodes. Based on the theory analysis of the two types of sensor＇s energy consumption,the allocation proportion between different nodes is calculated,and a maximizing lifetime scheme of node deployment is proposed.