Development of Communication Joint Tools for Implementing a Legacy-line Communication System in a Train

열차 내 무배선통신시스템 구축을 위한 통신연결장치 개발

  • Received : 2015.03.04
  • Accepted : 2015.04.06
  • Published : 2015.04.30


In this paper, a design of communication joint tools to implement a legacy-line communication (LLC) system, which exploits various conductive lines in a train, is presented. We develop two kinds of joint tools; one is a conductive joint tool (CJT) that is connected directly to the conventional lines and the other is the inductive joint tool (IJT) which connects the conventional lines indirectly using electromagnetic induction. As a result, the practical experiment of data communication confirms that an LLC system with the developed joint tools has a transmission rate more than 20 Mbps in the distance of 200 m away. In addition, an environmental durability test shows that the joint tools operate stably in an extreme environmenal variation. It is, therefore, considered that the developed joint tools are very useful to implement a communication network in the train working currently.


Legacy-line communication;power-line communication;communication joint tool;train communication network;data communication


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Supported by : 한국산업기술진흥원, 한국연구재단