DOI QR코드

DOI QR Code

Design of Wireless Power Transmission Antennas for Railway High-Speed Transponder System

철도교통용 고속 트랜스폰더 시스템 무선전력전송 안테나 설계

  • Lee, Jae-Ho (Train Control & Communication Research Team, Korea Railroad Research Institute) ;
  • Park, Sungsoo (Train Control & Communication Research Team, Korea Railroad Research Institute) ;
  • Kim, Seong Jin (Train Control & Communication Research Team, Korea Railroad Research Institute) ;
  • Ahn, IL Yeup (IoT Platform Research Center, Korea Electronics Technology Institute)
  • Received : 2017.08.16
  • Accepted : 2017.09.13
  • Published : 2017.10.31

Abstract

In railway systems, the exchange of information between running trains and wayside equipment is a very important role in various applications such as position detection and train control. Track circuits have been used as the medium for information transmission between trains and wayside. However, track circuits must be installed continuously along the track on the ground, resulting in an inevitable increase in installation and maintenance costs. One of the most promising solutions to reduce these costs is to mix continuous information transmission (via wireless communication) and discontinuous information transmission (via transponder). In this study, we designed antennas of railway high-speed transponder readers and tags for wireless power transmission, which can be used to transmit information from ground to high-speed trains with a maximum speed of 400km/h. We also verified system performance through computational simulation and prototyping.

철도시스템에서 이동 중인 열차와 지상과의 정보교환은 위치검지, 열차제어 등 다양한 분야에서 매우 중요한 역할을 수행하고 있다. 열차와 지상간의 정보전송을 위한 매체로 대부분 궤도회로가 사용되어 왔으나, 궤도회로는 지상에 선로를 따라 연속적으로 설치되어야 하므로 설치 및 유지보수 비용의 증대를 초래한다. 이러한 문제를 해결하고자 최근에는 연속적인 정보전송(무선통신)과 불연속적인 정보전송(트랜스폰더)을 혼합하는 방식으로 변화되고 있다. 본 연구에서는 400km/h의 고속으로 이동하는 열차에서 지상과 차상간 정보전송이 가능한 트랜스폰더 시스템을 개발하기 위하여, 현장설치 및 유지보수가 효율적인 수동형 태그에 구동전원을 공급하기 위한 무선전력전송용 리더 및 태그 안테나를 설계하고, 시뮬레이션 및 시작품 제작을 통하여 그 성능을 확인하였다.

Keywords

References

  1. Korea Railroad Research Institute (2012) Research planning for technology development of railway location system, Korean Institute of Construction & Transportation Technology Evaluation and Planning.
  2. J. H. Lee, K. H. Shin (2012) Positioning technology of railway Transportation, Railway Journal, 15(1), pp. 16-21.
  3. K. Shin, D. Shin. J. Beak, J. Lee (2011) Study on the application of SBAS in railway application, Proceedings of 2011 Autumn Conference of the Korean Society for Railway, Jeju, pp. 2768-2774.
  4. J. Lee, S. Park, H. Kim (2013) Study on high-speed and high-precision train position detection, Proceedings of 2013 Autumn Conference of the Korean Society for Railway, Daegu, pp. 1361-1365.
  5. Texas Instruments (2003) HF Antenna Design Notes Technical Application Report.
  6. Texas Instruments, Wireless Power : The Qi standard and $bqTESLA^{TM}$ Solutions.
  7. L. Zhao, Y. Jiang (2013) Modeling and optimization research for dynamic transmission process of balise ttele-powering signal in highspeed railways, Progress In Electromagnetics Research, 140, pp. 563-588. https://doi.org/10.2528/PIER13051012