CBTC系统中三重时间戳的应用研究  

Research on the Application of Triple Timestamp in CBTC System

作　　者：王恒 吴敏东 WANG Heng;WU Mindong

机构地区：[1]南京恩瑞特实业有限公司,南京211106

出　　处：《铁道通信信号》2023年第11期78-82,共5页Railway Signalling & Communication

摘　　要：基于通信的列车运行控制系统(CBTC)是轨道交通的关键核心设备,其相关子系统之间数据交互的及时性和有效性极为重要。针对数据传输或应用逻辑处理可能出现的延迟,对三重时间戳提出3种应用方法,可实现逻辑处理延时判断、网络传输及对端逻辑处理延时判断、处理周期同步判断等功能。以网络传输及对端逻辑处理延时判断为例,进行实验室仿真验证,结果表明:该方法可实现信号车载VOBC与轨旁ZC系统之间数据延时的判断,从而提高系统处理的安全性。Communication Based Train Control(CBTC)system is the key core system of rail transit,and the timeliness and effectiveness of data interaction between relevant subsystems are extremely important.In view of the possible delay in data transmission or application logic processing,three application methods for triple timestamp are proposed,and the functions of logic processing delay judgment,network transmission and logic processing delay judgment,and processing cycle synchronization judgment can be realized.Taking network transmission and logic processing delay judgment as an example,the laboratory simulation verification is carried out,and the results show that this method can realize the judgment of data delay between on-board VOBC and trackside ZC system,thereby improving the safety of system processing.

关 键 词：CBTC系统 通信延时 三重时间戳 移动授权 数据有效性 

分 类 号：U231[交通运输工程—道路与铁道工程]