From March 1981, the interlocking function at Ishiuchi on Japanese National Railways' Joetsu line will be performed by computers, working in parallel with a conventional relay interlocking so as to check their integrity under field conditions. Hierarchical architecture avoids the need for a large number of programs by segregating non-vital tasks, while reliability and safety are assured by two-out-of-three voting in a triple-redundant system. In addition, fail-safe fault detecting functions watch for component malfunction and shut down the subsystem affected, thus protecting overall safety.
Electronic interlocking to be tried in Japan
Versuche mit elektronischer Verriegelung in Japan
Railway Gazette International ; 136 , 12 ; 1043-1046
1980
4 Seiten, 6 Quellen
Aufsatz (Zeitschrift)
Englisch