Title :
A fail-safe microprocessor-based system for interlocking on railways
Author :
Min, Yinghua ; Zhou, Yutang ; Li, Zhongcheng ; Ye, Cheng
Author_Institution :
Inst. of Comput. Technol., Beijing, China
Abstract :
This paper presents a fail-safe microprocessor-based system for interlocking on railways, which is now installed at Pukou station near Nanjing. The system includes a basic interlocking system and a safety assurance system, taking advantage of completely diverse redundancy. By fault-tree analysis, the system guarantees fail-safety at the behavioral level, and lapses into a safe state, keeping switches stable and changing signals to red to avoid catastrophic failures, when any of the 30 critical conditions happens. Also, the system provides many error report and error log capabilities for maintainability
Keywords :
computerised control; failure analysis; railways; safety; signalling; trees (mathematics); Pukou station; error log; error report; fail safe microprocessor based system; fault tree analysis; railways interlocking; redundancy.; safety assurance system; Computers; Costs; Failure analysis; Fault trees; Rail transportation; Railway safety; Redundancy; Relays; Signal analysis; Switches;
Conference_Titel :
Reliability and Maintainability Symposium, 1994. Proceedings., Annual
Conference_Location :
Anaheim, CA
Print_ISBN :
0-7803-1786-6
DOI :
10.1109/RAMS.1994.291144
