신호보안시스템의 소프트웨어 신뢰성 향상에 관한 기초연구

초록

Railroad signaling safety system organized equipments and facilities of railway, increase transport efficienty and assurea safe operation of railway. In the earth days of signaling system, railway managers made sure of safety by using relay logic technology based on gail-safe concept. But the development result of cpmputer and science having beeb introduced to railway industry, railway signaling equipments begin to be operated through micro electronic control system. Accordingly high speed and high dendity operation of train became possible. Software reliability and safety technology that controls important systems of railway was highlighted. In the middle of 1990s the standard or guideline of railway reliability and safety were studied and estabilish, and are being reviewing in Europe, Japan, etc. Our reliability and safety technology have depended largely on foreign countries. In this study we performed a basic study about the reliability of software that the railway signaling system.