| 摘要: |
| 在基于网络的测量与控制系统中，对分散节点间的时钟同步有很高的要求。IEEE 1588
标准的精确时钟协议为测控系统的时钟同步提供了一种简单可行的途径。分析了精确时
钟协议实现的原理和算法，针对测控系统中对时钟同步精度的需求，研究了系统内选择最优
主时钟的算法和实现，以及硬件辅助检测时间戳的方法和应用。最后以以太网为例，对设计
的
方法进行了精度测试，验证了在测控系统中应用精确时钟同步协议能够满足系统的应用需
求。 |
| 关键词: 测控系统 IEEE 1588协议 精确时钟协议 最优主时钟算法 时间戳 硬件辅助 |
| DOI： |
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| 基金项目: |
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| Application of IEEE 1588 protocol in networked measurement and control systems |
| YANG Chuan-shun,YAN Ting-jiang |
| () |
| Abstract: |
| In a networked measurement and control system,high accuracy of the clock synchro
nization between the distributed nodes is required. IEEE 1588
standard of precision time protocol for measurement and control system pro
vides a simple and feasible way to the clock synchronization. This paper analyse
s the principle and algorithm of precision time protocol, according to the requi
rement of measurement
and control system for clock synchronization accuracy, studies the algorithm a
nd implementation to choose the best master clock in the system, and the hardwa
re-assisted method and application of detecting time stamp. Finally, taking the
et
hernet for example, it tests the accuracy of the clock synchronization designed
and the resut verifie
s that the application of precision clock synchronization protocol in measuremen
t and control systems can satisfy the system application requirements. |
| Key words: measurement and control system IEEE 1588 protocol precision time protocol bes
t master clock algorithm time stamp hardware-assisted |
《电讯技术》编辑部 