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为适应高速铁路、快速客运专线、铁路信号一体化的发展,计算机连锁控制系统作为车站关键基础信号设备,不仅要具有高度的安全性、可靠性、实时性、可维护性、可用性等基本特性,还应有强大、快速的处理能力,丰富、方便、安全的接口设备以及良好的可扩展性。本文介绍了满足这些要求的基于RTLinux/Linux的容错计算机连锁系统的软硬件体系结构,分析了其构成和特性,讨论了Linux操作系统实时性问题。
In order to meet the development of high-speed railway, fast passenger dedicated line and railway signal integration, computerized chain control system, as the key basic signal equipment of the station, not only has the basic characteristics of high safety, reliability, real-time, maintainability and usability, There should also be strong, fast processing power, rich, convenient, secure interface devices and good scalability. This paper introduces the software and hardware architecture of RTLinux / Linux based fault tolerant computer chain system to meet these requirements, analyzes its composition and characteristics, and discusses the real-time problem of Linux operating system.