Journal of the Korean Society for Railway (한국철도학회논문집)

The Korean Society for Railway (한국철도학회)
권호 표지
DOI QR코드

DOI QR Code

A Study on the Implementation of an All-IP Train Communication Network Using Plastic Optical Fiber

플라스틱 광섬유를 이용한 All-IP 열차통신네트워크 구현에 관한 연구

  • Kim, Dongha (Department of Railroad Electrical/Signaling Engineering, Graduate School of Railway, Seoul National University of Science and Technology) ;
  • Lee, Soyoung (Sihyun Korea Co.) ;
  • Choi, Kyuhyong (Department of Railroad Electrical/Signaling Engineering, Graduate School of Railway, Seoul National University of Science and Technology)
  • Received : 2013.01.03
  • Accepted : 2013.05.01
  • Published : 2013.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

Recent trains have broadband train communication networks to improve train operation safety and to provide passengers with multimedia services. Compared to glass optical fiber, plastic optical fiber (POF) has a large diameter; it also provides the good durability and maintainability necessary to railway applications. This paper suggests an All-IP broadband train communication network that connects all devices in the train through a POF interface. Performance tests according to Korean railroad standards shows that this POF interface is usable in the range of vibration and temperature conditions encountered in trains. A dedicated Layer-2 switch with the POF interface is developed for the construction of the All-IP train communication network. A prototype 1Gbps train communication network was set up in a trial-run of train on a metro line using the developed Layer-2 switch and POF. On-track tests indicated the feasibility of the POF train communication network. POF has an additional advantage of economic feasibility, and it is expected to start a trend toward broadband train communication networks using POF.

최근의 철도차량은 안전성 향상 및 승객에의 멀티미디어 서비스 제공을 위해 광대역 열차통신네트워크를 설치하고 있다. 플라스틱 광섬유(POF)는 일반 광섬유에 비해 직경이 크고 내구성 및 유지보수성이 우수하기 때문에, 진동 및 온도변화가 큰 환경에서 운행하는 철도차량에 적합하다. 이에 따라, 철도차량내 모든 장치를 POF를 이용하여 All-IP 방식으로 접속하는 1Gbps급 열차통신네트워크를 구현하기 위한 연구를 수행하였다. 한국철도규격에 의거한 특성 시험을 통하여 POF가 철도차량의 진동 및 온도변화 환경에 적합하다는 것을 확인하였으며, POF 인터페이스를 갖는 전용의 Layer-2 스위치를 개발하였다. 개발된 Layer-2 스위치와 POF를 이용하여 시운전중인 도시철도차량에 1Gbps급 열차통신네트워크를 구성하고 데이터 전송률과 손실률을 측정하여 성능을 검증하였다. POF는 경제성도 우수하며, 향후 철도차량용 통신네트워크는 POF 기반으로 광대역화될 것으로 기대된다.

Keywords

References

  1. H.C. Shin (2010) A Study for application of train information collection device using RTD system, Journal of the Korean Society for Railway, 13(6), pp. 541-545.
  2. Y.J. Choi, M.H. Seo, J.H. Park (2007) Mastership passing algorithm for train communication network protocol, Journal of the Korean Society for Railway, 10(1), pp. 88-95.
  3. S.C. Yun, J.H. Park, S.C. Kim, S.J. Eum (2010) The analysis on the effects of the failure reduction strategies of the railway facilities, Journal of the Korean Society for Railway, 13(6), pp. 608-616.
  4. Y.S. Jeon, H.S. Lee, J.B. Wang (2011) A study on the train composition requirements for safety operation of urban-transit, Journal of the Korean Society for Railway, 14(1), pp. 66-72. https://doi.org/10.7782/JKSR.2011.14.1.66
  5. D.K. Sin (2011) A study on the reliability/safety assessment and improvement of USN gateway for train control, Journal of the Korean Society for Railway, 14(5), pp. 416-424. https://doi.org/10.7782/JKSR.2011.14.5.416
  6. D.J. Chang, S.H. Kang, D.H. Song (2009) Survey on the adoptability of IT and smart sensor technologies into the next-generation high-speed train, Journal of the Korean Society for Railway, 12(5), pp. 649-655.
  7. C.W Park (2010) Gradient-index plastic optical fiber for alloptical gigabit internet infrastructure in home/office network, Proceedings of POF Symposium (OFC 2010), San Diego, California.
  8. B.W. Park, D.Y. Yoon, D.S. Kim (2009) Optical communication and sensing modules for plastic optical fibers, The Korean Journal of Chemical Engineering, 47(5), pp. 558-564.
  9. G. Duggan, D.A. Barrow, T. Calvert, et al. (2008) Red vertical cavity surface emitting lasers(VCSELs) for consumer applications, Proceedings of Vertical-Cavity Surface-Emitting Lasers XII, San Jose, California.
  10. T. Koonen, H. van den Boom, I.T. Monroy, G.D. Khoe (2001). Broadband data communication techniques in POF-based networks, Proceedings of the 27th European Conference of Optical Communication (ECOC 2001), Amsterdam, Netherlands.
  11. O. Ziemann, J. Krauser, P.E. Zamzow, W. Daum (2008) POF Handbook: Optical Short Range Transmission Systems, Springer-Verlag, Berlin and Heidelberg.
  12. H. Poisel, D. Kalymnios, P. Scully (2007) POF sensors applications in every days life, Proceedings of the 33rd European Conference of Optical Communication (ECOC 2007), Berlin.
  13. D. Visani, C.M. Okonkwo, S. Loquai, et al. (2010) Record 5.3 Gbit/s transmission over 50m 1mm core diameter graded-index plastic optical fiber, Proceedings of National Fiber Optic Engineers Conference(NFOEC), San Diego, California.
  14. H.B. Kwon, S.W. Nam, T.H. Ko, et al. (2010) Field measurements to predict the wind gust under train at the speed-up of conventional railway lines, Journal of the Korean Society for Railway, 13(3), pp. 376-381.
  15. Y. Koike, M. Asai (2009) The future of plastic optical fiber, NPG Asia Materials, 1(1), pp. 22-28. https://doi.org/10.1038/asiamat.2009.2
  16. P. Polishuk (2009) Potential applications of plastic optical fibers(POF) for commercial & military aircraft, ARINC Fiber Optics Subcommitee May 2009 Meeting.
  17. R. Gaudino, A. Nocivelli, H. Kragl, O. Ziemann (2007) Latest results from the POF - all EU project: toward improved capacity over large-core plastic optical fibers, Proceedings of Broadband Europe Conference, Antwerp, Belgium.

Cited by

  1. Implementation of Mobile Hot-spot Network for Subway Wireless Backhaul Network vol.18, pp.3, 2015, https://doi.org/10.7782/JKSR.2015.18.3.223
  2. Development of Communication Joint Tools for Implementing a Legacy-line Communication System in a Train vol.19, pp.4, 2015, https://doi.org/10.6109/jkiice.2015.19.4.877