• Journal of the Korean Society for Railway
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• v.20 no.4
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• pp.491-499
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• 2017

Railway turnout systems are one of the most important systems in a railway and abnormal turnout systems can cause serious accidents. To detect an abnormal state of a turnout, turnout clearance detectors are widely used. These devices consider a failure of a turnout clearance detectors to be a failure of the turnout system, that could hinder train operations. Analysis of turnout clearance detector failures is very important to ensure normal train operation. We categorized failures of detectors into four groups to identify failure characteristics of the 140 detectors, which are composed of main line detectors (A), side tracks (B), detectors that are in operation more than 80 times a day (C) and detectors that are in operation fewer than 10 times per day. Failures of detectors have mainly been caused in the control part, in the cables and sensors; failures are classified into four groups (A, B, C and D). We have tried to find failure density distributions for each type of failures, inferring the parameter distributions a priori. Finally, using the Bayesian inference we proposed a maintenance time for control parts through the mean time of the detector, life and the life expectancy.

• Proceedings of the KIEE Conference
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• summer
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• pp.1454-1456
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• 2004

전기선로전환기는 분기기에 전환력을 공급하기 위한 장치로 전기선로전환기의 선택은 분기기에 연결되는 간류 구조, 침목, 밀착 쇄정기, 밀착 검지기, 연결간 및 벨 크랭크 등에 따른 제약 사항과 함께 검토된다. 본 논문에서는 현재 우리나라에서 사용 중인 전기선로전환기에 대한 특성을 분석한 후, 기존선 속도 향상 및 안전사고 예방을 위한 보안 설비의 추가적인 설치 필요성 분석 및 속도 향상을 위한 요구 사양을 분석하였다.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.22 no.1
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• pp.50-57
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• 2008

To change rail tracks from main track to another track, it needs a device that is called the turnout point. If the point which is composed of accurate parts and complex sensors does not work, And also, serious problems will be arisen. However, there are serious problems by the failure of the point. In this paper, after analyzing the failures of the conventional points, a new point is suggested. The proposed point is not affected by the surge caused by lightning.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2007.05a
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• pp.404-409
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• 2007

To change rail tracks from main track to another track, it needs some device that is called turnout point. If the point which is composed of accurate parts and complex sensors does not work, serious problems will be arisen. However, there serious problems by the failure of the point. In this paper, after analyzing the failures of the conventional points, a new point is presented. The proposed point is not affected by surge caused by lighting.