基于FPGA的地面信号系统内部安全总线的设计与实现

Design and Realization of FPGA-Based Safety Bus in Ground Signal System

介绍一种应用于地面信号系统的安全总线设计与实现。介绍该总线的系统功能与结构,以及基于FPGA技术的实现原理。该总线满足高安全完整性等级的地面信号系统的要求,基于该总线的列控设备已成功应用于列控中心、联锁、无线闭塞中心,设备符合SIL4安全等级要求。

This paper introduces the design and implementation of a critical bus applied in the trackside signal system together with the system function and structure of the bus and FPGAbased realization principle.The bus has a high safety integrity level which can meet the requirements of the trackside signal system.Train control equipment which is based on the bus can meet the SIL4 safety level and has been successfully applied to train control center,interlocking system,and radio block center.