Title :
Component-Based Safety Computer of Railway Signal Interlocking System
Author :
Hai-feng Wang ; Wei Li
Author_Institution :
Sch. of Electron. & Inf. Eng., Beijing Jiaotong Univ., Beijing
Abstract :
Computer is the vital element for safety-critical control system. This paper presents a component-based fail-safe computer in railway signal interlocking system (safety interlock computer - SIC). We discuss the methodology and the safety tactics of SIC in detail, moreover, the architecture and safety computation principle are deeply analyzed. The hardware safety integrity level of SIC has been verified according to standard IEC 61508, and the result shows that SIL4 is achieved, and SIC fulfils the rigorous safety requirements of signal interlocking.
Keywords :
IEC standards; railways; safety systems; safety-critical software; SIL4; component-based fail-safe computer; component-based safety computer; railway signal interlocking system; safety interlock computer; safety requirements; safety-critical control system; standard IEC 61508; Aerospace safety; Computer architecture; Control systems; Fault tolerance; Hardware; Military computing; Rail transportation; Railway safety; Silicon carbide; Software safety; Fail-safe; Railway signal interlock system; Safety Critical System;
Conference_Titel :
Computing, Communication, Control, and Management, 2008. CCCM '08. ISECS International Colloquium on
Conference_Location :
Guangzhou
Print_ISBN :
978-0-7695-3290-5
DOI :
10.1109/CCCM.2008.269
