对大型发电机在线监测的无线传感器网络时间同步设计  

Wireless Sensor Network Time Synchronization Design for Large Generator On-line Monitoring

作　　者：李罗[1] 杨永明[1] 徐志[1] 文军[1] 刘金强[1] 

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400044

出　　处：《传感技术学报》2009年第12期1818-1822,共5页Chinese Journal of Sensors and Actuators

基　　金：重庆市自然科学基金重点项目资助(CSTC;2007BA3001)

摘　　要：准确的时间同步是实现传感器网络自身协议运行、数据融合、TDMA调度、协同睡眠、定位等的基础。本文首先剖析了大型发电机在线监测的无线传感器网络的体系结构,在比较性地分析已有无线传感器网络时间同步协议、机制和算法的基础上,提出了一种适用于电气设备在线监测的时间同步方案,此方案结合外同步和内同步,在进行同步的过程当中采用单向广播同步和线性回归结合的方法,最后用仿真软件NS对算法进行了仿真对比,结果证明该算法适合于监测网络的要求。Exact time synchronization is one of the main conditions for realizing wireless sensor network＇s self protocol run, data fusion, TDMA attempter, cooperative sleep, orientation etc. The architecture of wire-less sensor network（WSN） for large generator on-line monitoring is analyzed firstly. Then a time synchronization scheme which is suitable for the wireless sensor network is proposed on the basis of comparing existing time synchronization protocol, mechanism and algorithm of wireless sensor network. This time synchronization scheme integrates internal synchronization with external synchronization, unidirectional broad- cast combined with linear regression is adopted in the course of synchronization. At last the algorithm is simulated and compared with simulation software NS, which proves that the algorithm is suitable for the monitoring networks.

关 键 词：在线监测 无线传感器网络 时间同步 线性回归 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]