控制与信息技术Issue(4)：80-84,5.DOI:10.13889/j.issn.2096-5427.2025.04.012
基于北斗与NTP双源时钟的LKJ校时方案研究
Research on LKJ Timing Approach Based on BeiDou and NTP Dual Clock Sources
摘要
Abstract
Train operation monitoring devices(LKJ)in China rely on a trusted clock reference for train operation control.However,the current practice of manual clock synchronization in LKJ leads to error accumulation and low operational efficiency,and is prone to synchronization misses and deviations,giving rise to challenges such as loss of control during temporary disclosures and reduced on-schedule operation rates.To solve these issues,this paper proposes an automatic timing approach based on BeiDou and Network Time Protocol(NTP).This approach ensures the correctness and high availability of clock sources through dual-source redundant time services and intelligent timing algorithms,thereby mitigating train operation risks caused by time errors in LKJ.A device developed based on the proposed approach has been successfully implemented on railway locomotives in China,replacing manual timing,with a success rate of automatic timing of 100%and a maximum clock error of less than 1s.Experiment results demonstrate this approach can lower the intensity of manual operations and eliminate safety risks arising from time errors in LKJ,proving its desired accuracy and feasibility.关键词
列车运行监控装置/自动校时/北斗/网络时间协议/可信时钟/监测Key words
train operation monitoring device(LKJ)/automatic timing/Beidou/network time protocol/trusted clock/monitoring分类
交通工程引用本文复制引用
梁飞,肖立志..基于北斗与NTP双源时钟的LKJ校时方案研究[J].控制与信息技术,2025,(4):80-84,5.基金项目
湖南省重点研发科技项目(2025GK2066) （2025GK2066）
