基于ZigBee无线传感网络的分簇时间同步算法  

Cluster Time Synchronization Algorithm Based on ZigBee Wireless Sensor Network

作　　者：张秀清[1] 皮瑞 王晓君[1] 

机构地区：[1]河北科技大学信息科学与工程学院,河北石家庄050000

出　　处：《工业控制计算机》2024年第5期44-46,共3页Industrial Control Computer

基　　金：河北省省级科技计划项目——新一代电子信息技术创新专项(21310402D)。

摘　　要：在无线传感网络中,时间同步技术在信道分配、数据收发、休眠调度中都有着关键作用。目前已有的时间同步算法,有些同步精度不高,有些需要进行频繁的数据交换导致功耗过大。因此设计出能同时满足高精度和低功耗两个要求的算法势在必行。提出的算法通过改变网络拓扑结构,构造分簇函数,选出簇头,进行分簇。在新的网络拓扑中,协调器与簇头之间通过频偏补偿来保证同步的精度,簇头与成员节点之间通过三次通信消除时延进行时间同步,从而实现全网时间同步。仿真结果表明,整个网络在较低功耗下也能有较高的同步精度。In wireless sensor networks,time synchronization technology has a key role in channel allocation,data sending and receiving,and dormant scheduling.Among the existing time synchronization algorithms,some of them do not have high synchronization accuracy,and some of them require frequent data exchanges resulting in excessive power consumption.Therefore,it is imperative to design an algorithm that can simultaneously meet the requirements of both high precision and low power consumption.The algorithm proposed in this paper constructs a clustering function by changing the network topology,elects the cluster head and performs clustering.In the new network topology,the synchronization accuracy is ensured by frequency offset compensation between the coordinator and the cluster head,and the time synchronization is carried out by eliminating the time delay through three-time communication between the cluster head and the member nodes,so as to realize the time synchronization of the whole network.Simulation results show that the whole network can have high synchronization accuracy even at lower power consumption.

关 键 词：无线传感网络 时间同步 分簇 ZIGBEE 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置] TN92[自动化与计算机技术—控制科学与工程]