文档介绍：外文参考文献及译文
ponent-based puter of Railway
Signal Interlocking System
中文题目模块化安全铁路信号计算机联锁系统
Component-based puter of Railway Signal Interlocking System
1 Introduction
Signal Interlocking System is the critical equipment which can guarantee traffic safety and enhance operational efficiency in railway transportation. For a long time, the core puter adopts in interlocking system is the special customized high-grade puter, for example, the SIMIS of Siemens, the EI32 of Nippon Signal, and so on. Along with the rapid development of electronic technology, the customized puter is facing severe challenges, for instance, the high development costs, poor usability, weak expansibility and slow technology update. To e the flaws of the high-grade special puter, the . Department of Defense has put forward the concept:we should mercial standards to replace military norms and standards for meeting consumers’ demand [1]. In the meantime, there are several explorations and practices about adopting open system architecture in avionics. The United Stated and Europe have do much research about utilizing cost-effective fault-puter to replace the puter in aerospace and other safety-critical fields. In recent years, it is gradually ing a new trend that the utilization of ponents in aerospace, industry, transportation and other safety-critical fields.
2 Railways signal interlocking system
Functions of signal interlocking system
The basic function of signal interlocking system is to protect train safety by controlling signal equipments, such as switch points, signals and track units in a station, and it handles routes via a certain interlocking regulation.
Since the birth of the railway transportation, signal interlocking system has gone through manual signal, mechanical signal, relay-based interlocking, and the puter-based Interlocking System.
Architecture of signal interlocking system
Generally, the Interlocking System has a hierarchical structure. Acco