• Title/Summary/Keyword: Automatic train protection

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Improvement of Overspeed Protection for Automatic Train Stop System (열차자동정지시스템(ATS)의 과속방지장치 개발)

  • Jeong, Rag-Gyo;Kim, Baek-Hyun;Kang, Seok-Won;Seo, Moon-Seog
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.67 no.1
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    • pp.61-67
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    • 2018
  • Automatic Train Stop (ATS) is a device that automatically stops or decelerates a train when the train exceeds the permitted speed limits or violates the signal regulations. The railway signaling system has been evolved to an automatic train control system (ATC), and is being developed into Distance-to-Go and Communication Based on Train Control (CBTC). In spite of that, the ATS system is currently being operated in Seoul Metro (line 1 and 2) and most of railway lines in Korea as well as overseas. In this study, we presents the technical methodology to prevent human errors in order to secure the safety in operation of the ATS system.

Headway Analysis in Daejeon Nord section(Daejeon shunting yard-Daejeon station) which high speed train and conventional trains will be run (대전북(대전 조차장-대전역) 고속전철 연계 운행 구간의 운전시격 분석)

  • Kim, Yong-Gyu;Kim, Jong-Gi;Yu, Chang-Geun
    • Proceedings of the KIEE Conference
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    • 2003.11c
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    • pp.810-813
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    • 2003
  • The present headway on KNR(Korea National Railway) lines varies from 6 to 10 minutes depending on the each line and by the operation of High Speed line in 2004, the bottleneck would be expected within a few sections such as Daejeon-Daejeon shunting yard which will be the common mute between KTX(Korea Train Express) and conventional trains. Therefore, KNR would like to reduce the headway of the all lines by 4 minutes with the implementation of ERTMS/ETCS on-board system. Where ETCS(European Train Control system), the subsystem of ERTMS, is Automatic Train Protection system for safety train running. This study will be analyze expected braking distance and running time depending on characteristics of conventional passenger and freight trains and high speed train will be operated within electrified conventional line for comparing the headways of ATS(Automatic Train Stop) system and ETRMS/ETCS system within the Daejeon-Daejeon shunting yard section.

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Complement of the Interlocking Logic of ATS for Heterogenous Railway Signaling Systems (이종 철도신호시스템을 위한 기존 자동열차정지 연동로직의 보완)

  • Jeong, Rag-Gyo;Kim, Baek-Hyun;Kang, Seok-Won;Byun, Yeun-Sub;Park, Geon-Won
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.17 no.10
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    • pp.702-708
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    • 2016
  • The railway signaling system has evolved to maximize its safety and maintainability based on the experiences in the construction and operation of railway systems. The newly developed systems was established to cope with the changes in an operating environment. In the process of a transition to the new system, both the existing ATS (Automatic Train Stop) and new ATP/ATO (Automatic Train Protection/Automatic Train Operation) systems are operating simultaneously in parallel. In this situation, modifications of the conditions of the interlocking diagram and logic are necessarily required on the existing ATS systems due to the frequent improvements in signaling equipment. This paper reports the enhancement of safety and operational efficiency of the system through an improvement of the security and the interlocking conditions of the existing ATS systems. The independent display of signals for each track was ensured to avoid giving the effect of On/Off signals for the selected track on the opposite side, and the security was improved by adjusting the position and interlocking conditions. In addition, the increased traffic density of railway systems was achieved by removing the unnecessary conditions and detailed signal display, which resulted in enhanced operational efficiency.

Development of High Reliability Monitoring and Control System for Platform Screen Door (승강장 스크린 도어(PSD)에 대한 고 신뢰성의 감시 및 제어 시스템 개발)

  • Kim, Jin-Sik;Shon, Jin-Geun
    • The Transactions of the Korean Institute of Electrical Engineers P
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    • v.59 no.2
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    • pp.158-162
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    • 2010
  • PSD is automatically opened and closed when subway train arrive on the station. This system was designed to control electric automatic system. These doors will provide passenger safety, energy saving and a good environment in subway. The monitoring and control systems of PSD are configured so that they can be operated in automatic mode in connection with ATO through the composite control panel in the station control room. The objective of this paper is to obtain high reliability that is essential for monitoring and control systems of PSD. The power supply is based on protection circuit using DC power bridge from two UPS. Also, stable communication system consists of CAN communication line redundancy and RF cross protection algorithm. Monitoring state display results show the validity of the proposed high reliability monitoring and control systems of PSD.

Intelligent Transport System of Urban Mass Transit

  • Xu Jinxiang
    • Proceedings of the KOR-KST Conference
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    • 1998.09a
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    • pp.100-107
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    • 1998
  • With the rapid development of Urban Mass Transit in China, the Intelligent Transport System becomes inevitable. Based on the brief introduction of the blueprint of Urban Mass Transit in Shanghai, this paper analyses in detail the components and functions of Automatic Train Control (ATC) system applied in Shanghai Metro, presents the key technology of the main three subsystems of the ATC system : Automatic Train Supervision (ATS) subsystem, Automatic Train Protection (ATP) subsystem, Automatic Train Operation (ATO) subsystem. After reading this paper, you will have an general grasp of ATC system. At the end of the paper, it suggests a good resolution about the ATC system equipment to be made in China. If you are interested in the resolution, we'd like to exchange our thought.

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The Development of Simulator for Integrated Onboard Signalling System(IOSS) (통합 차상신호장치 테스트용 시뮬레이터 개발)

  • Kim, Seok-Heon;Han, Jae-Mun;Park, Tan-Se;Cho, Yong-Gee
    • Proceedings of the KSR Conference
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    • 2011.05a
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    • pp.363-367
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    • 2011
  • In this paper a simulator for Integrated Onboard Signalling System(IOSS) will be presented and illustrated. IOSS which is integrated with there signalling systems such as ERTMS/ETCS Level 1 ATP(Automatic Train Protection), ATC(Automatic Train Control) and ATS(Automatic Train Stop) is a signalling system for HEMU-400X(Highspeed Electric Multiple Unit - 400km/h eXperiment). HEMU-400X is under development as the next generation high-speed train in Korea. Before conducting a trial run of HEMU-400X with IOSS, we must carry out functional test of IOSS. The simulator is suggested in this paper for testing and verification of IOSS. The simulator can help to test all function of IOSS although a real train and trackside equipments are not existed. Also the simulator can make a fault in trackside equipment intentionally. In that scenario, we can figure out how IOSS handle emergency situations.

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A Study of RAMS Analysis and Assessment Activities for Automatic Train Protection System based on ERTMS/ETCS Level 1 (차상신호시스템(ERTMS/ETCS Level 1) 적용에 따른 위험분석 및 평가활동 연구)

  • Shim, Kyu-Don;Lee, Jong-Woo
    • Journal of the Korean Society for Railway
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    • v.14 no.2
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    • pp.121-129
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    • 2011
  • This paper presents the methods to acquire the Safety Certificate from Independent Safety Assessment based on the IEC or EN standard which is commonly applied to railway system for Automatic Train Protection (ATP) system in accordance with ERTMS/ETCS Level 1 system. This also shows approach methods and relative activities for project lifecycle to accomplish and ensure the system requirements of ATP system, RAMS and system quality activities. These kind of activities for quality assurance of ATP system to obtain Safety Certificate could improve the quality of domestic railway system based on On-Board system of ERTMS/ETCS Level 1 and also contribute to the growth of railway business.

A Study of a comfortable ride for ATO train control system in a driverless operation (ATO 무인운전 열차제어시스템의 승차감 제어 연구)

  • Park, Gie-Soo;Kim, Ja-Young;Park, Chae-Jung;Lee, Sung-Hoon;Ryou, Myung-Seon
    • Proceedings of the KSR Conference
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    • 2011.10a
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    • pp.2292-2299
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    • 2011
  • The CBTC(Communication Based Train Control) system, a recent train control system, is a wireless communication based train control system that is operated in the moving block system control by tracking trains in real time. In additioin, the system helps to increase the volume of traffic by shortening driving headways through controlling moving block system control. Furthermore, driverless modes are performed by controlling ATP(Automatic Train Protection)/ATO(Automatic Train Operation). In this paper, controllable elements in ATO driverless train control system, affecting comfortable ride, will be analysed and applied to CBTC train control system that developed by POSCO ICT. Finally, the test results of improved comfortable ride will be showed by appling the developed system to the Gyeong-san light rail transit test track.

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