摘要
网络化测试系统本质上是一个实时系统,具有严格的时间约束;这就要求在测试过程中网络化测试系统各测试仪器设备之间保持严格的时间同步;分析了几种主要的时间同步协议,重点对IEEE1588高精度时间同步协议进行了研究,对IEEE1588的时间同步原理和网络拓扑结构进行了详细的阐述;在此基础上,提出了基于IEEE1588的网络化测试系统时间同步模型,并给出了在测试节点中实现IEEE1588协议的方法。
Networked Test System is a real--time system essentially, which has a strict time constraint. This requires to keep strict time synchronism between test instruments of Networked Test System in test procedure. Several time synchronism protocols are analyzed in the paper, especially taking a deep study of IEEE1588 （Precision Time Protocol）. This paper also expatiates the time synchronism principium and the network topological structure of IEEE1588. On the base of the research, the time synchronism model of Networked Test .System based on IEEE1588 is put forward in the paper. In the end, the method of implementing the IEEE1588 protocol in the test nodes is given.
出处
《计算机测量与控制》
CSCD
北大核心
2009年第11期2112-2114,共3页
Computer Measurement &Control
