부산도시철도 2호선 차상신호장치 국산화 개발 사례 연구

The development for main system of urban rail and for localizing components adequately copes with the rapidly changing environment of the railway also through a long-term plan to prepare from major part discontinued, we promote improving railway skills and continual parts supply. In this paper, since Busan Subway Line 2 opened, we constantly maintained onboard signaling device and localized the device that is a problem in the operation, and through the fault cause analysis, solved problem, performed self-research and develpment. it described signal stability system based on own research conducted. and we go ahead with conditional purchase of specific parts to prepare in case of components discontinued. The onboard signaling device of Busan Subway Line 2 is a system that is a distance calculation method supplied by Bombarrdier in Sweden in 1997 and is applied the ATP system. Because it performs a continuous train supervision and a control in order that trains do not face a dangerous situation.