基于耦合振荡器模型的WSN时间同步算法——以ZigBee网络为例  

Wireless sensor networks time synchronization algorithm based on coupled oscillators model—exemplified by ZigBee networks

作　　者：周春良[1] 屈卫清[1] 程萍[1] 张琪[1] 陆正球[1] 黄元君[2] 

机构地区：[1]宁波大红鹰学院信息工程学院,浙江宁波315157 [2]嘉兴职业技术学院机电与汽车分院,浙江嘉兴314000

出　　处：《计算机工程与应用》2013年第23期63-66,共4页Computer Engineering and Applications

基　　金：宁波市自然科学基金(No.2012A610071;No.2013A610125);宁波大红鹰学院高级别基金项目预研项目(No.GY122108)

摘　　要：提出了一种基于耦合振荡器模型的ZigBee网络时间同步算法,解决了ZigBee网络数据采集过程中的延迟,使得整个ZigBee网络趋于同步,提高了系统的时间精度。该研究引入不应期的方法解决延迟节点重复激发的问题,分析模型的可行性,以及模型中各个参数对同步精度的影响。通过基于耦合振荡器模型的线性动态函数,解决经典模型中计算量过大的问题。通过测试平台上的实验,验证了算法的可行性。The paper proposes the ZigBee network time synchronization algorithm based on oscillator model. The algo- rithm solves the delay in the process of ZigBee network data acquisition, making the entire Zigt3ee network trend to be synchro- nized and improving the system＇ s accuracy. The paper introduces the refractory period method to solve the repeated excited problem caused by delay between the nodes and discusses the impact of various parameters of this model on synchronization. The model uses a dynamic function to describe states of different moment of the oscillator, solves the problem of excessive cal- culation in classic pulse-coupled oscillator model, and passes the test experiments to verify the feasibility of the algorithm.

关 键 词：ZIGBEE网络 耦合振荡器模型 时间同步 

分 类 号：TN929[电子电信—通信与信息系统]