摘要
轨道信号系统采用二取二的冗余架构设计,可以提高系统的可靠性,系统中的多个板卡使用双口RAM进行数据交互,在进行系统设计时,必须考虑数据传输的速度和数据的可靠性,提出了一种基于多角色的环形缓冲区方法,采取多种措施来避免访问冲突,提高双口RAM的数据交互速率,并保证了冗余系统中数据交互的安全性和可靠性。
Redundancy design with 2 out of 2 is applied in the railway signal system, which can enhance the reliability of the system. Dual-port RAM is used to exchange data between multi-boards in the system and the speed of communication and the reliability of data should be considered in design. We present a method of dual-port RAM data communication based on multi-role ring buffer, which takes several meas- ures to avoid access conflictions and to increase the speed of data communication, enhancing the safety and reliability of data exchange.
出处
《铁道通信信号》
2014年第12期86-89,共4页
Railway Signalling & Communication
关键词
冗余系统
通信
安全
Redundancy system
Dual-port RAM
Communication
Safety
