一种无线传感器网络低功耗节点的设计

Design and Implementation of Low-power Node in Wireless Network System

节点的功耗大小决定着整个无线传感器网络的生命周期,因此,节点的低功耗设计尤为重要;在简单介绍分析各节点设计解决方案及其特点的基础上,分析了无线传感网络系统中低功耗节点设计方案、关键芯片选择、设计及其实现,重点阐述了低功耗控制设计及其实现方法,最后,完成了不同工作条件下的节点消耗电流测量和分析;实验结果表明,提出的节点设计方案在保证低功耗特性的同时,兼具良好通信性能。

The power consumption of node determines the lifeeycle of the wireless sensor network. So the design of low--power node is very important. After a simple analysis of solutions of sensor node design and their characters, it emphasized on the analysis, selection of key chips, design and implementation of the scheme of low--power wireless sensor node in wireless sensor network. Also it emphasized on the low-- power control design and its implementation. The current consumption of the node was measured and analyzed under different working states. Also communication distance was measured under different conditions. The result of experiment shows that the WSN nodes have good low--power character and have good performance of communication.