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

Volume

1

fYear

2008

fDate

3-4 Aug. 2008

Firstpage

538

Lastpage

541

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Computing, Communication, Control, and Management, 2008. CCCM '08. ISECS International Colloquium on

Conference_Location

Guangzhou

Print_ISBN

978-0-7695-3290-5

Type

conf

DOI

10.1109/CCCM.2008.269

Filename

4609569