• Journal of the Korean Society for Railway
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• v.15 no.6
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• pp.604-608
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• 2012

Traditionally, the track circuits have been used for the purpose of train locating. However, the recent train control systems like a CBTC(Communications Based Train Control) do not utilize the track circuits to minimize the amount of ground signal devices. Therefore, there are increasing concerns over the system that can locate the position of train exactly without using the track circuits. Then, the contactless locating methods are added to ensure safety when the shunting sensitivity of the track circuit becomes low for the existing sections equipped with the track circuits. In this paper, a prototype of train locating device has been designed and tested, which utilizes the current phase difference upon magnetic field variation. The results show improved features of this method over the conventional track circuits method.

• Proceedings of the KIEE Conference
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• 2015.07a
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• pp.1615-1616
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• 2015

철도에서 열차를 검지하기 위해 기본적으로 궤도회로를 사용하지만 CBTC와 같이 지상의 신호설비의 감소 과정에서 기존의 궤도회로 대신 차축카운터와 같은 방법으로 열차 검지 방법이 변화하고 있다. 차축카운터는 불연속 열차검지 방식을 사용하며, 불연속 열차검지 시스템에서 사용하는 열차검지센서는 자기장의 변화를 이용한 비접촉식 열차 검지 센서를 사용한다. 하지만 센서의 위치가 정확하게 위치하지 못하면 열차검지에 문제가 발생하게 되어 중요한 열차 검지 기능에 이상이 발생한다. 따라서 센서의 설치위치 변화를 검지하고 이를 확인할 수 있는 회로에 대한 연구가 필요하다.

• Journal of The Korean Society For Urban Railway
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• v.6 no.4
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• pp.243-248
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• 2018

The abnormally high temperature of the train part is related to train accidents and monitoring is important for safe operation of trains. In case of KTX an abnormality detecting device that detects the abnormality of the axle and scans the urban railway is installed on the railroad and when there is an abnormal heat generation, a system for automatically informing the control center is installed. The IR sensors module used in this system are depend on quick response. we have conducted a study on the fast response test method through the production of experimental equipments.