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A Study on the Wireless Communication Method for Emergency Broadcasting System in Metro Environments

도시철도용 비상방송시스템을 위한 무선통신방식 연구

  • Jang, Soo-Hyun (Mobility Platform Center, Korea Electronics Technology Institute) ;
  • Shin, Dae-Kyo (Mobility Platform Center, Korea Electronics Technology Institute) ;
  • Yoon, Sang-Hun (Mobility Platform Center, Korea Electronics Technology Institute) ;
  • Jung, Han-Gyun (Mobility Platform Center, Korea Electronics Technology Institute) ;
  • Jin, Seong-Keun (Mobility Platform Center, Korea Electronics Technology Institute) ;
  • Lim, Ki-Taeg (Mobility Platform Center, Korea Electronics Technology Institute)
  • 장수현 (전자부품연구원 모빌리티플랫폼연구센터) ;
  • 신대교 (전자부품연구원 모빌리티플랫폼연구센터) ;
  • 윤상훈 (전자부품연구원 모빌리티플랫폼연구센터) ;
  • 정한균 (전자부품연구원 모빌리티플랫폼연구센터) ;
  • 진성근 (전자부품연구원 모빌리티플랫폼연구센터) ;
  • 임기택 (전자부품연구원 모빌리티플랫폼연구센터)
  • Received : 2018.11.09
  • Accepted : 2018.12.13
  • Published : 2018.12.31

Abstract

Recently, the subway running in metro environments has a problem in securing the safety of passengers due to the failure of announcement in emergency situations such as breakdown, train accidents and power outage in the underground tunnels. Thus, there is a need to develop an emergency broadcasting system that can provide the announcement to all passenger cars in any emergency situations on the railway route. In this paper, the applicability of various wireless communication technologies for the emergency broadcasting system through the measurement campaign was examined in Seoul metropolitan subway. A WAVE(Wireless Access in Vehicular Environments) is communication technology that can use 5.9GHz dedicated frequency band without charge and it is possible to directly communicate between terminals over 200m without the help of additional relay. Especially, it confirms robust communication performance in the various metro environments, and therefore, it is considered to be suitable as a communication method of a radio-connected emergency broadcasting system for urban subway.

최근 열차사고 혹은 단전/단선 등의 비상상황 시 방송장치 고장에 따른 객실 안내 방송 불가로 인한 2차사고 발생률이 증가하고 있다. 이에, 철도 운행 경로 상 어떤 비상상황이 발생하여도 편성 단위의 열차에 안내방송을 할 수 있는 시스템 구축의 필요성이 대두되고 있다. 본 논문에서는 터널 등 열악한 철도 운행환경에서 단차, 단선 등의 사고로 열차방송을 사용할 수 없을 경우를 대비하여 기존 통신 중계인프라에 독립된 무선통신방식을 검토하고, 대상 통신장치를 실제 철도 운행 환경(굴신률이 큰 터널 등) 하에서 통신성능 평가를 수행하였으며, 이를 통해 비상방송시스템을 위한 무선통신 기술로써의 적용성을 고찰한다.

Keywords

References

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Cited by

  1. A Study on the Wireless Communication Antenna for Emergency Broadcasting System in Metro Environments vol.17, pp.10, 2018, https://doi.org/10.14801/jkiit.2019.17.10.1