基于硬件时间戳的时间比较系统  

Time Comparison System Based on Hardware Time Stamp

作　　者：罗欢[1] 韩琳[1] 袁佳歆[2] 

机构地区：[1]广东水利电力职业技术学院,广东广州510635 [2]武汉大学电气工程学院,湖北武汉430072

出　　处：《测控技术》2014年第4期1-3,共3页Measurement & Control Technology

基　　金：珠江水利科学研究院开放研究基金([2013]KJ06);国家自然科学基金资助项目(50807041)

摘　　要：为了满足不同情况下时钟同步对于时间比较的需求,研制了一套基于硬件时间戳的时间比较系统,对该系统的工作原理和设计方法进行了分析和研究,并在实际应用中测量统计了该系统的比较精度。结果表明:该系统可以实现时间比较并达到数十纳秒级的比较精度。基于硬件时间戳的比较技术可以广泛应用于对时检测和时间同步平滑调整,帮助提高时间同步的精度和平滑度。For the purpose of time comparison in time synchronization of different situations, a time comparison system based on hardware time stamp is developed. The working principle and design method are analyzed and researched. The accuracy of time comparison is measured in practical application. The results show that the sys- tem can realize time comparison and reach an accuracy of tens of nanoseconds. The time comparison technology based on hardware time stamp can be widely used in time synchronization measurement and smooth time ad- justment, which helps to improve the accuracy and smoothness of time synchronization.

关 键 词：硬件时间戳 时间比较 对时 精度 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]