摘要
提出了一种基于冗余编码系统的循环冗余校验(CRC)方法。该方法应用于轨道交通信号控制系统中可解决冗余编码系统与其他类型冗余编码或非冗余编码系统的通信问题,通过将冗余码校验信息融合到CRC计算过程中,在无故障的情况下得出的冗余码CRC与标准CRC完全一致,保证了系统与外界系统的正常通信功能;在系统发生故障的情况下能够将错误信息反馈到冗余码CRC中,外界冗余/非冗余系统可校验出故障信息,提高了系统的安全性和故障可检测率。
A CRC(cyclic redundancy check)verification method based on redundant coding system is presented,the application of this method to the rail traffic signal control system will solve communication problems between the redundant coding system and other types of redundant coding or the non-redundant coding system.By integrating the redundancy check information into the CRC computing process,the redundant coding CRC obtained in fault-free situation is exactly the same as the standard CRC,and could ensure the normal communication function.While in case of system failure,the error information can be fed into the redundant coding CRC,the external redundancy/non-redundant system will verify the fault information,thus improve the system security and the fault detection rate.
作者
夏伟
蒋建金
傅林泰
张磊
XIA Wei;JIANG Jianjin;Fu Lintai;Zhang Lei(CASCO Signal Co.,Ltd.,200071,Shanghai,China)
出处
《城市轨道交通研究》
北大核心
2019年第8期141-143,147,共4页
Urban Mass Transit
关键词
轨道交通
通信系统
冗余编码系统
CRC校验
rail transit
communication system
redundant coding system
CRC verification
