The Influence of Frequency on Wayside Transmitter of ATP System upon Reinforcing Bars in Concrete Slab Track

콘크리트 슬래브궤도에서 철근이 ATP시스템 지상자의 주파수에 미치는 영향

  • 김민석 (서울산업대학교 철도전문대학원, 철도전기신호공학과) ;
  • 윤인모 (호남대학교 광산캠퍼스, 정보통신대학) ;
  • 고준석 (한국철도시설공단, KR연구소) ;
  • 이종우 (서울산업대학교 철도전문대학원, 철도전기신호학과)
  • Published : 2008.12.30

Abstract

In concrete slab track, the signal current using wayside transmitter of ATP (Automatic Train Protection) system is influenced by reinforcing bars. The magnetic coupling between reinforcing bars and wayside transmitter of ATP system as a filter makes an input current distorted. So, it makes an alternating current signal with a desirable size not transmit to on-board system of a train. Way to decrease the distortion of an input current signal frequency is to avoid maximum induction current frequency. And the induction phenomenon between reinforcing bars insulated and wayside transmitter of ATP system does not occur. In this paper, we represent the model about wayside transmitter of ATP system and reinforcing bars on the concrete slab tracks, and calculated the parameters demanded for the model. Also, we demonstrated it through the Maxwell program. Furthermore, we calculated impedance on wayside transmitter used in KVB system and ERTMS/ETCS system which are a kind of ATP system, frequency response of induction current, using Matlab, and demonstrated the validity of it, using PSpice program.

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