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基于IEEE 1588协议的网络时钟同步系统
许国强1, 陈皓瑜2, 张永刚1, 周小林1
1.复旦大学 信息科学与工程学院, 上海 200433;2.联芯科技有限公司 运营管理部, 上海 201206
摘要:
提出一种基于IEEE1588协议和卫星授时的局域网内时间同步方案,将FC3180微控制器作为设备的核心控制单元,结合相应的硬件单元实现IEEE1588协议,将通过授时模块获取的卫星上的时间作为基准时间.IEEE1588将此基准时间分布到局域网中,并将各个从时钟设备的时间同步到基准时间源上.实验结果表明,该方案能够实现亚微秒级别的时间同步精度,达到了IEEE1588协议规定的精度,能够满足大部分应用系统对时间同步的要求,具有一定的应用价值.
关键词:  IEEE1588  时间同步  精确时间同步协议  卫星授时
DOI:10.3969/J.ISSN.1000-5137.2017.01.024
分类号:
基金项目:国家科技支撑课题项目(2015BAD17B04)
Research and development of network clock synchronization protocol based on the IEEE1588 system
Xu Guoqiang1, Chen Haoyu2, Zhang Yonggang1, Zhou Xiaolin1
1.School of Information Science and Technology, Fudan University, Shanghai 200433;2.Department of Operations Management, Leadcore Technology Co., Ltd., Shanghai 201206
Abstract:
In this paper,we proposes a local area network (LAN) time synchronization scheme based on IEEE1588 protocol and satellite timing.FC3180 micro controller is used as the core control unit of equipment combined with the corresponding hardware unit which realizes IEEE1588 protocol.The satellite time is gained through GPS clock module as a benchmark,and is distributed to LAN by using IEEE1588 protocol.The time on each clock equipment is synchronized to the benchmark.Experiment results show that sub-microsecond level time synchronization accuracy,as IEEE1588 sets,can be realized,and time synchronization requirements that most of application systems demand can be meet by using our scheme.
Key words:  IEEE1588  time synchronization  precision time protocol  satellite timing