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Train interval control and train-centric distributed interlocking algorithm for autonomous train driving control system

열차자율주행제어시스템을 위한 간격제어와 차상중심 분산형 연동 알고리즘

  • Oh, Sehchan (Signalling & Communication Research Team, Korea Railroad Research Institute) ;
  • Kim, Kyunghee (Signalling & Communication Research Team, Korea Railroad Research Institute) ;
  • Choi, Hyeonyeong (Signalling & Communication Research Team, Korea Railroad Research Institute)
  • 오세찬 (한국철도기술연구원 지능형신호통신연구팀) ;
  • 김경희 (한국철도기술연구원 지능형신호통신연구팀) ;
  • 최현영 (한국철도기술연구원 지능형신호통신연구팀)
  • Received : 2016.09.30
  • Accepted : 2016.11.10
  • Published : 2016.11.30

Abstract

Train control systems have changed from wayside electricity-centric to onboard communications-centric. The latest train control system, the CBTC system, has high efficiency for interval control based on two-way radio communications between the onboard and wayside systems. However, since the wayside system is the center of control, the number of input trains to allow a wayside system is limited, and due to the cyclic-path control flows between onboard and wayside systems, headway improvement is limited. In this paper, we propose a train interval-control and train-centric distributed interlocking algorithm for an autonomous train-driving control system. Because an autonomous train-driving control system performs interval and branch control onboard, both tracks and switches are shared resources as well as semaphore elements. The proposed autonomous train-driving control performs train interval control via direct communication between trains or between trains and track-side apparatus, instead of relying on control commands from ground control systems. The proposed interlocking algorithm newly defines the semaphore scheme using a unique key for the shared resource, and a switch that is not accessed at the same time by the interlocking system within each train. The simulated results show the proposed autonomous train-driving control system improves interval control performance, and safe train control is possible with a simplified interlocking algorithm by comparing the proposed train-centric distributed interlocking algorithm and various types of interlock logic performed in existing interlocking systems.

Keywords

Train-centric;Autonomous train driving control;Improved interval control;Distributed interlocking;Shared resource;Semaphore

Acknowledgement

Supported by : 한국철도기술연구원

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