低功耗WirelessHART网络时钟同步

摘要

A design of WirelessHART network time synchronization protocol is proposed based on the TPSN. Linear regression method is added on TPSN to estimate the clock offset between nodes,and abnormal condition treatment is used to reduce the probability of error data. Through the WirelessHART nodes testing, the cycle of this protocol improves 10% relative to the TPSN. Therefore,this improved protocol can reduce the node power consumption.%提出一种基于TPSN( Timing-Sync Protocol for Sensor Networks)的WirelessHART网络时钟同步协议改进措施。通过在原有TPSN协议上添加线性回归法估计通信节点间的时钟偏差以延长时钟同步周期并针对工厂存在强干扰，协议添加异常情况处理机制以减少坏点出现概率。经过WirelessHART通信节点平台测试，改进时钟同步协议的时钟同步周期相对TPSN协议延长百分之十，因此，该改进协议达到有效降低节点功耗的目的。