一种分布式时钟同步技术设计

Design on a Distributed Clock Synchronization Technology

摘要:

时钟同步是分布式网络内各节点设备协同工作的重要前提，网络内许多任务的完成都需以时钟同步作为基础。为了实现分布式系统中高精度的时钟同步，本文在现有的时钟同步技术的基础上，设计了一种分布式时钟同步技术，以北斗卫星授时技术作为主同步机制，单向时钟同步技术作为辅助同步机制。即在正常情况下网络中的节点设备利用北斗卫星进行授时，而在无法顺利接收北斗授时信号的少数情况下，节点设备之间利用单向时钟同步技术完成时钟同步，两者结合共同实现不同情况下高精度的时钟同步。在LabVIEW编程环境下设计仿真程序对方案进行验证，结果表明，该方案可以实现分布式系统中的时钟同步，方案的可行性可以得到验证，然后通过进一步的误差分析可知，误差处在一个可接受的范围内。

Abstract:

Clock synchronization is an important prerequisite for devices to work together in a distributed network.，and many tasks in the network are based on clock synchronization. In order to achieve high precision clock synchronization in distributed system, this paper designs a distributed clock synchronization technology based on the existing clock synchronization technology. The Beidou satellite timing technology is used as the main synchronization mechanism, and the one-way clock synchronization technology is used as the auxiliary synchronization mechanism. In other words, under normal circumstances, the node devices in the network use the Beidou satellite for timing, but in a few cases when the Beidou timing signal cannot be received smoothly, the node devices use the one-way clock synchronization technology to complete the clock synchronization, and the combination of the two can achieve high precision clock synchronization under different circumstances. The simulation program was designed in LabVIEW programming environment to verify the scheme. The result shows that the scheme can realize clock synchronization in distributed system, and the feasibility of the scheme can be verified. Then through further error analysis, the error is in an acceptable range.