基于IEEE1588的多路可调同步时钟板设计与实现  

High Precision Adjustable Synchronous Clock Board Based on IEEE1588 Protocol

作　　者：赵永成 陈健[1] 张俊杰[1] 曹强 

机构地区：[1]上海大学特种光纤与光接入网重点实验室,上海200444

出　　处：《工业控制计算机》2024年第2期4-7,共4页Industrial Control Computer

摘　　要：为了进一步提高电力系统变电站分布式传感设备信号采集的同步性和时钟的同步精度,设计了一款时钟同步板,实现了软硬件结合的IEEE1588高精度时钟同步系统。时钟板采用卫星授时,为系统提供低抖动、高精度的同步时钟源。采用LS1012A作为主控制器,通过运行PTPdv2软件实现了本地时钟调节等算法。采用88E1512实现了SerDes接口硬件时间戳的标定,降低信号在传输过程中的延迟,提高了千兆以太网下时钟同步的精度。经过测试,该时钟板实现了优于±50 ns误差的时钟同步,为变电站的传感监测设备的同步时钟提供了解决方案。In order to further improve the synchronization of signal acquisition of distributed sensing equipment in power system substation,improve the synchronization accuracy of clock.A clock synchronization board is designed to realize the high precision clock synchronization system of IEEE1588.The clock board uses satellite timing,through digital phase-locked loop,to provide the system with low jitter,high precision synchronous clock source and variable ADC sampling frequency.The synchronization system uses LS1012A as the main controller and implements the local clock adjustment algorithm by running LinuxPTP.88E1512 is used to calibrate the hardware time stamp of the SerDes interface,avoid the influence of the software time stamp on the uncertain network delay,reduce the delay of the signal in the transmission process,and further improve the accuracy of the clock synchronization in gigabit Ethernet network.

关 键 词：IEEE1588 88E1512 LinuxPTP Si5383 时钟同步 

分 类 号：TM63[电气工程—电力系统及自动化] TP393.11[自动化与计算机技术—计算机应用技术]