• Journal of Information Processing Systems
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• 제16권5호
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• pp.1064-1073
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• 2020

The general situation of system composition and safety management of high-speed railway terminal is investigated and a comprehensive evaluation index system of operational security is established on the basis of railway laws and regulations and previous research results to evaluate the operational security management of the high-speed railway terminal objectively and scientifically. Index weight is determined by introducing interval eigenvalue method (IEM), which aims to reduce the dependence of judgment matrix on consistency test and improve judgment accuracy. Operational security status of a high-speed railway terminal in northwest China is analyzed using the traditional model of fuzzy comprehensive evaluation, and a general technique idea and references for the operational security evaluation of the high-speed railway terminal are provided. IEM is introduced to determine the weight of each index, overcomes shortcomings of traditional analytic hierarchy process (AHP) method, and improves the accuracy and scientificity of the comprehensive evaluation. Risk factors, such as terrorist attacks, bad weather, and building fires, are intentionally avoided in the selection of evaluation indicators due to the complexity of risk factors in the operation of high-speed railway passenger stations and limitation of the length of the paper. However, such risk factors should be considered in the follow-up studies.

• Journal of Electrical Engineering and Technology
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• 제10권3호
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• pp.1284-1292
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• 2015

As visual surveillance systems become more and more common in human lives, approaches based on these systems to solve security problems in practice are boosted, especially in railway applications. In this paper, we first propose a robust snag detection algorithm and then present a railway security system by using a combination of multiple sensors and the vision based snag detection algorithm. The system aims safety at several repeatedly occurred situations including slope protection, inspection of the falling-object from bridges, and the detection of snags and foreign objects on the rail. Experiments demonstrate that the snag detection is relatively robust and the system could guarantee the security of the railway through these real-time protections and detections.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2005년도 추계학술대회 논문집
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• pp.558-568
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• 2005

There are two kinds of police authorities in Korea. One is the Special Judicial Police, under the authority of the Ministry of Construction and Transportation, charged with maintenance of public order on trains, in stations and other places of business operated by the Korea Railway Corporation. The other is the Local Subway Police, belonging to the Local Police Agencies, whose jurisdiction covers trains, station and other areas managed and operated by local governments. The existence of two separate entities for common objective of railway security has given rise to problems including inefficiency in performance and lack of technical knowledge and synergic effects. This study looks at the need for resolving those problems by restructuring and expanding the Special Judicial Police to bring railway security under a single authority and an integrated railway security systems operation.

• 한국철도학회논문집
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• 제9권4호
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• pp.425-431
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• 2006

There are two kinds of police authorities in Korean railway industry, that is, the Special Judicial Police and the Local Subway Police. The existence of two separate entities for common objective of railway security has given rise to problems including inefficiency in performance and lack of customers-focused police service and synergic effects. The purpose of this study is to search for solutions to rail crimes that allows for rapid spatial movements since they take place on fast moving trains.

• International Journal of Railway
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• 제2권3호
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• pp.113-117
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• 2009

Risk management is an important part of system assurance and it is widely used in safety-related system. Railway signal system is one kind of safety-related system and its most important goal is to guarantee the safety of railway system. The method based on risk management can find and solve the security issues of railway signal system more effectively. This paper introduces the basic conception of risk management, studies the whole process of risk management and related tools and techniques and discusses some key points qualitatively combining with the particularity of railway signal system.

• 한국멀티미디어학회논문지
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• 제18권3호
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• pp.287-297
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• 2015

A railway security detection system is very important. There are many safety factors that directly affect the safe operation of trains. Security detection technology can be divided into passive and active approaches. In this paper, we will first survey the railway security systems and compare them. We will also propose a subway security detection system with computer vision technology, which can detect three kinds of problems: the spark problem, the obstacle problem, and the lost screw problem. The spark and obstacle detection methods are unique in our system. In our experiment using about 900 input test images, we obtained about a 99.8% performance in F- measure for the spark detection problem, and about 94.7% for the obstacle detection problem.

• 전기학회논문지P
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• 제59권1호
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• pp.10-17
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• 2010

Safety-critical systems related to the railway communications are currently undergoing changes. Mechanical and electro-mechanical devices are being replaced by programmable electronics that are often controlled remotely via communication networks. Therefore designers and operators now not only have to contend with component failures and user errors, but also with the possibility that malicious entities are seeking to disrupt the services provided by theirs systems. Recognizing the safety-critical nature of the types of communications required in train control operations, the communications infrastructure will be required to meet a number of safety requirements such as system faults, user errors and the robustness in the presence of malicious attackers who are willing to take determined action to interfere in the correct operation of a system. In this paper, we proposed the safety strategies employed in the railway communications and a security mechanism for Korean railway communication system. Also, we presented the developed means for validation and determination of communication safety based on the proposed security mechanism in the railway system.

• 한국전자통신학회논문지
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• 제17권4호
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• pp.695-702
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• 2022

최근 들어 활발하게 연구되고 있는 스마트 철도 시스템은 통신기술과 정보기술 등 ICT(: Information & Communication Technology) 기반으로 자동화 단계를 넘어 지능화 단계로 진입하고 있다. 스마트 철도에 사용되고 있는 ICT 기술은 일반적으로 정보침해에 취약한 특성을 보여 다양한 정보보호 기술의 지원을 받고 있다. 고속/대량 운송 수단으로서 철도 시스템의 스마트화에는 그 기반을 이루는 ICT 기술을 위한 정보보호 방안의 강구가 필수적이다. 따라서 본 논문에서는 스마트 철도 통신기반의 잠재적 위험 요인을 살펴보고 이에 대응할 수 있는 정보보호 요소를 고찰하여 스마트 철도 통신을 위한 단계별 정보보호 방안의 필요성을 제시한다.

• 한국재난관리표준학회지
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• 제2권1호
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• pp.57-64
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• 2009

철도터널의 건설이 증가하고 장대화 됨에 따라 터널내에서의 화재 위험에 대한 사회적 관심이 증대되고 있는 실정이다. 하지만 현재까지 이러한 화재 위험에 대해 정량적으로 평가하기 위한 연구는 부족한 편이고 특히, 각 변수들의 불확실성을 고려하여 화재위험도를 정량적으로 평가하는 방법에 대해서는 거의 연구된 바가 없다. 따라서, 본 연구에서는 Event Tree 기법을 이용한 기존의 확률론적 위험도 평가기법을 바탕으로 몬테카를로 시뮬레이션 기법을 이용한 변수들의 불확실성을 고려할 수 있는 기법을 추가하여 철도터널의 정량적 위험도 평가기법을 개선하고자 하였으며 실제 프로젝트에 적용함으로써 그 유효성을 검증하고자 한다.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2011년도 정기총회 및 추계학술대회 논문집
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• pp.2795-2803
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• 2011

Due to speed acceleration, higher requirements have been put forward to high speed railway communication and signaling system. The railway applications, including intra-train, train to ground and trackside networks, demand larger bandwidth, higher reliability and shorter response time from railway communication networks to ensure security operation and passenger communication. However, the current railway communication and signaling system has lagged behind the railway development, so advanced communication technologies are needed to improve the current situation. This paper presents high speed railway communication and signaling system based on 4G LTE technology, introduces its network architecture, key technology and analyzes its technical advantages compared with GSM-R system. According to analysis, LTE based high-speed railway communication network is more effective and reliable.