Computerized Interlocking System for Railway Signaling Control: SMILE

A computerized interlocking system for railway signaling control is proposed. The overall architecture of this system, aiming at a high degree of safety, reliability, and flexibility, is shown. The basic architecture of both a fail-safe microcomputer subsystem which is the kernel of this system and system-bus structured multimicrocomputer subsystem is discussed. Based on the results of the quantitative evaluation, system safety and reliability are given. This system can bring the evolution of a train traffic control in a station.