电子器件2016，Vol.39Issue(5)：1103-1107,5.DOI:10.3969/j.issn.1005-9490.2016.05.017
基于IEEE-1588的高精度时钟同步系统设计
Design of High Precision Time Synchronization System Based on IEEE-1588
摘要
Abstract
In order to improve the precision of data acquisition equipment of the earthquake early warning system for high speed railway,a high precision time synchronization system based on IEEE-1588 is designed. The system uses STM32+FPGA structure to set up a hardware ,and it achieves high precision time interval measurement based on PLL delay measurement in FPGA,of which measurement accuracy is 600 ps. The system obtains network time by PHY chip DP83640,and combines Kalman filtering and PID algorithm in STM32 to correct local time and PPS phase by network time to complete software design of the synchronization system. The test result shows that error of time synchronization is less than 3 ns and stability maintains for a long-term.关键词
时钟同步/IEEE-1588/PLL延迟测量法/分布式数据采集Key words
time synchronization/IEEE-1588/PLL delay measurement/distributed data acquisition分类
机械制造引用本文复制引用
谭超,苏超,胡诗俊,吴燕,何旭东..基于IEEE-1588的高精度时钟同步系统设计[J].电子器件,2016,39(5):1103-1107,5.基金项目
三峡大学2015年硕士学位论文培优基金项目 （）
