• Title/Summary/Keyword: Railway signalling system

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Study on the Design of Operation Scenario for Replacement of a Railway Signaling System (철도신호시스템 교체에 따른 운행 시나리오 도출에 관한 연구)

  • Jeong, Rag-Gyo;Kim, Baek-Hyun;Kang, Seok-Won;Kho, Young-Hwan
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.63 no.8
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    • pp.1064-1069
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    • 2014
  • The railway signalling system plays an essential role in the headway and routing control for a safe and efficient train operation. The reliable and safe operation of the system is very important because the failure of the railway signalling system can lead to the collision, derailment, or unexpected stop of a train. So far, the conventional wayside signal mode (ATS: Automatic Train Stop) has been generally used as the railway signalling system. However, this system is highly linked to a risk of major accidents resulted from human mistakes such as missing a signal or careless control of train speed. Accordingly, the onboard signal mode (ATC: Automatic Train Control) as an alternative of ATS has been recently introduced and applied to transmit effectively the information on speed control of a train by using computers and communication equipment. In the process of replacing the obsolete signal system, it is necessary to switch over the system while providing passengers with normal services. Therefore, the integration of a railway signaling system compatible for both ATS and ATC and its interface is discussed in this study. In particular, the implementation scenario required for operation planning of the integrated system was designed, and the results as well as effects of its applicability test were also presented.

Safety Analysis and Methods in a Railway Signalling System

  • Chang, Kwang-Chi;Lee, Key-Soe;Kim, Jong-Ki
    • KIEE International Transaction on Electrical Machinery and Energy Conversion Systems
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    • v.4B no.2
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    • pp.92-99
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    • 2004
  • This paper intends to provide practical safety analysis methods and the criteria for method selections. A careful choice of safety analysis techniques will enhance the efficiency of the safety case process. A couple of recommendations are provided from practical experience.

Performance Analysis and Testing of Railway Signalling Communication Protocol (열차제어용 통신프로토콜 구조분석 및 성능검증 시험)

  • Hwang, Jong-Gyu;Lee, Jae-Ho
    • Proceedings of the KIEE Conference
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    • 2003.07b
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    • pp.1318-1320
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    • 2003
  • According to the computerization of railway signalling system, necessity of communication protocol for interface between these equipments is increasing. Therefore the research on communication protocol structure that is required according to computerization trend of these signalling goes. In our research the existed protocol currently used was analyzed, and the simulation modeling for performance analysis is deduced. Based on this simulation model the performance analysis and comparison is carried out, and also validation test is executed about new designed protocol.

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Several quantitative principles to derive Safety Integrity Level in the railway signalling system (안전 무결도 도출을 위한 정량적 분석 기법 고찰)

  • Joung E.J.;Ahn B.S.;Park S.H.;Hang Y.J.;Han K.H.;Chang S.H.;Kim Y.M.
    • Proceedings of the KSR Conference
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    • 2003.05a
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    • pp.511-516
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    • 2003
  • It is very important to ensure system safety during the process of developing a system. Railway system is also devoting a great portion for the safety. Nowadays many countries leading railway industry have their own system assessment principles according to the situation of their train control systems. In this paper, several principles to derive Safety Integrity Level are represented in the railway signalling system. The characteristics of those principles are also considered respectively.

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A study on the train operation assurance method for installing new signalling system (새로운 신호시스템 도입에 따른 열차운행 보증기술에 관한 고찰)

  • 조봉관;류상환;김종기
    • Proceedings of the KSR Conference
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    • 2002.10a
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    • pp.453-458
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    • 2002
  • East Japan Railway Company developed an digital ATC signalling system instead of conventional ATC system and now is making progress the construction tokyo area Keihin-Tohoku Line between Minamiurawa and Tsurumi. But replacing into new system with existing ATC system in operation should be performed without affecting current running system and the technology that makes it possible for current system and new system to coexist, initialization of system, preparation for an emergency should be organized not to affect overall system. Controlling method of digital ATC signalling system and "assurance technique" for solving the problems when replacing will be mentioned in this paper.

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Development of Static Testing Tool Related Int'l Standard for Railway Signaling Software (국제표준 기반 열차제어시스템 소프트웨어의 정적 테스팅 지원도구의 개발)

  • Hwang, Jong-Gyu;Jo, Hyun-Jeong
    • The Transactions of the Korean Institute of Electrical Engineers P
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    • v.58 no.2
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    • pp.108-115
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    • 2009
  • Recent advances in computer technology have brought more dependence on software to train control systems. Hence, the safety assurance of the vital software running on the railway system is very critical task and yet, not many works have been done. While much efforts have been reported to improve electronic hardware's safety, not so much systematic approaches to evaluate software's safety, especially for the vital software running on board train controllers. In this paper, we have developed the static software testing tool for railway signaling, especially Fagan Inspection module and checklists supporting module. This static testing tool for railway signaling can be utilized at the assessment phase, and also usefully at the software development stage also. It is anticipated that it will be greatly helpful for the evaluation on the software for railway signalling system.

An Algorithmic Approach to Design of a railway Interlocking Table (전자연동장치용 연동도표작성 알고리즘 설계에 관한 연구)

  • 이길영;박영수;이재훈;유광균;이재호
    • Proceedings of the KSR Conference
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    • 1998.05a
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    • pp.427-435
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    • 1998
  • In this paper will be presented an algorithm for designing of a railway interlocking table which is a document describing the functional specification of the interlocking device. The ability to produce an interlocking table has been handed down in the signalling engineers society. And the signalling engineer makes the most of his expertise to produce an interlocking table. But, the expertise has not yet been organized into technical system, the core of the expertise is a hard nut to crack. Therefore, we analyze into signal engineering expertise, and propose a generalization of interlocking notion. Also, an algorithm is drawn up based on a train route setting principle to solve practical and general problems by computer And the performance of the algorithm is evaluated for test program based on AutoCAD technology. The evaluation result shows that it can be utilized as the effective algorithm for computer control of the signalling system as interlocking device, that it improved in safety

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The Review of Specification for SPDs used in Railway Signalling Equipment (철도신호설비용 서지보호기에 대한 규격 검토)

  • Lee, Tae-Hoon;Park, Ki-Bum;Jeon, Yong-Joo;Ryu, Young-Tae
    • Proceedings of the KSR Conference
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    • 2008.06a
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    • pp.596-602
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    • 2008
  • Recently, there are increasing social needs for safe operation of trains and comforting for passengers. But lightning surges are responsible for serious disturbances such as damage, permanent degradation or temporary erratic operation of sensitive electronics circuits and systems. The purpose of this paper is to identify the requirements for Surge Protective Devices(SPDs) used in protecting railway signalling system. In this paper, we describes tests and requirements which establish methods for testing SPDs and determining their performance.

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A Study on Reliability and Safety Calculation of vital system in Railway Signalling System (신호시스템 요구사항 도출방안)

  • Lee, Jong-Woo;Joung, Eui-Jin;Hwang, Jong-Gyu;Shin, Duck-Ho
    • Proceedings of the KIEE Conference
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    • 2000.07b
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    • pp.1387-1389
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    • 2000
  • Railway signalling system is required to be high safety against collision, derailment and collision at level crossing and to be high availability. The signalling system is usually divided into automatic train control, interlocking and centralized traffic control systems and each system must be high fail safe and availability. This study focused on reliability calculation of vital systems in train control system.

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A Study(I) of Signalling for Driverless Operation (무인자동운전을 위한 신호제어시스템 개발(I))

  • 윤용기;정락교;이병송;최규형
    • Proceedings of the KSR Conference
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    • 2000.05a
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    • pp.376-381
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    • 2000
  • Because of the presure of costs some public transport companies are forced to think new system that is more simple and more economic forms of operation. Radio-based operation and automatic driverless operation for city railways are possible to low the costs. To construct the automated driverless operation system, it is necessary to configure the new signalling. This paper focuses on the automated driverless operation system suitable for the LRT and the standard of signalling function and the R&D project in the world.

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