摘要
随着网络技术的飞速发展,分布式应用系统的规模越来越大,网络中各远距离节点间的时间同步性要求越来越高;这种高同步性要求在诸如分布式数据采集和测试测量系统中尤为重要。IEEE 1588——精确时间协议(PTP,Precision Time Protocol)为此提供了一个很好的解决方案,它是一种主要基于以太网的精确时钟同步技术,其同步成本低、精度高、协议开放,广泛应用于各种通信、测试测量设备;文章着重介绍了如何在分布式数据采集系统中实现IEEE 1588PTP协议,其实现原理可应用到其它类似基于IEEE 1588PTP协议的分布式应用中;采用此方法构建的分布式数据采集系统同步精度达到了纳秒级。
With the rapid development of Network technology, the size of distributed system became more and more large, and the re- quirement of time synchronization between those remote nodes in the Network became much more than before. This kind of synchronization is extremely important in distributed data acquisition systems and measurement systems. IEEE 1588 Precision Time Protocol （PTP） is a precise clock synchronization technology which based on Ethernet, and it is well applied to many kinds of communication and measurement e- quipments because of its low cost, high precision and exoteric protocol. In this paper, it is discussed how to implement IEEE 1588 PTP in distributed data acquisition systems, and its implemental principle can be applied to other distributed systems which based on IEEE 1588 PTP. The synchronization precision of distributed data acquisition systems based on this method have reached ns grade.
出处
《计算机测量与控制》
北大核心
2014年第4期1273-1275,共3页
Computer Measurement &Control
