• 한국ITS학회 논문지
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• 제9권4호
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• pp.113-122
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• 2010

지하철의 유지보수성, 경제성 등의 문제점을 보완하기 위하여 현재 차세대전동차 시스템 개발연구가 활발히 진행되고 있으며, 이는 지하철의 첨단성, 승객편의성, 시스템 안전성 및 신뢰성확보를 목적으로 하고 있다. 이러한 시점에서 차세대 전동차 개발이 지하철 이용자들에게 미치는 영향에 대한 사전연구가 필요하며, 본 연구에서는 서울시 지하철 1~8호선 이용자를 대상으로 차세대전동차 시스템 도입에 따른 지불의사금액 및 결정요인을 도출하였다. 차세대전동차 시스템 도입에 따른 이용자의 편의성(운행속도, 승차감, 안전성, 쾌적성, 보안성, 정보성)에 대한 지불의사금액 도출을 위하여 Price Sensitivity Method(PSM)를 적용하였으며, 지하철 이용자를 대상으로 차세대전동차 도입시 발생하는 효과에 대한 정의를 상세히 설명하고, 추가지불의사금액(willingness to pay) 및 결정요인을 조사하였다. 분석결과 차세대전동차 시스템 도입에 따른 지불의사금액의 범위는 148원~161원이 도출되었으며, 지불의사금액 결정요인은 지하철 이용자의 "성별", "이용횟수", "쾌적성 만족도", "보안성 만족도"가 영향을 미치는 것으로 분석되었다.

• Journal of information and communication convergence engineering
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• 제18권1호
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• pp.28-32
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• 2020

Railway transportation is the main land-based transportation in most countries. Accordingly, railway-transportation safety has always been a key issue for many researchers. Railway pedestrian accidents are the main reasons of railway-transportation casualties. In this study, we conduct experiments to determine which of the latest convolutional neural network models and algorithms are appropriate to build pedestrian railroad accident prevention systems. When a drone cruises over a pre-specified path and altitude, the real-time status around the rail is recorded, following which the image information is transmitted back to the server in time. Subsequently, the images are analyzed to determine whether pedestrians are present around the railroads, and a speed-deceleration order is immediately sent to the train driver, resulting in a reduction of the instances of pedestrian railroad accidents. This is the first part of an envisioned drone-based intelligent security system. This system can effectively address the problem of insufficient manual police force.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 춘계학술대회 논문집
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• pp.948-951
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• 2008

Ubiquitous sensor network (USN) based on ZigBee communication protocol has been used in various application fields, such as home-network, intelligent building and machine, logistics, environmental monitoring, military field, security field and etc. The ZigBee is targeted at radio-frequency application that require a low data rate, long battery life and secure network. Especially, the USN system can be applied efficiently to building-indoor where the complex geometry is adopted. In this study, all 90 points of railway cabin indoor were monitored for temperature and humidity using USN technology. All sensors were pre/post-calibrated and the temperature/humidity change were analyzed in a railway cabin in real-time. The results would be useful to develop the cabin heating, ventilating and air conditing (HVAC) system to meet all passengers' thermal comfort regardless of their seat position.

• 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.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1997년도 하계학술대회 논문집 A
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• pp.339-341
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• 1997

This study is presenting the method for an effective data transmission in MAGLEV which is now tested and intends to provide for an intelligent operation of signal system in future. To exchange a lot of information, it is ideal to adopt a digital system and a micro-based system is essential for these purposes. FSK modulation and HDLC protocol are adopted on this study and information line assembly which is used as the information exchange, as the speech communication, and as the detection of speed and position is constructed in one unit. Actually this study is produced academic achievements of the data transmission system of MAGLEV train and an advanced method of intelligent operation in future railway system.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2007년도 추계학술대회 논문집
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• pp.1248-1253
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• 2007

Urban transit or subway stations generally service for a long period of several decades. And, the urban transit or subway is public transportation which lots of people takes every day. During the service time, they are inevitably damaged from environmental corrosion, material aging, fatigue, and the coupling effects with long-term loads and extreme loads. The included damage accumulates and performance degenerates due to the above factors. They would inevitably reduce the resisting capacity of station against the disaster; even they result in collapse with the structural failure under extreme loads. And, if disaster such as earthquake, fire, etc. happens, it causes huge property damage and threatens the human lives. Because of these above reasons, the intelligent health surveillance system should be researched and developed for ensuring the safety of station. In this paper, the research plans of the intelligent health surveillance system of urban transit station are presented. And also, the development or establishment directions of this system are suggested.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 추계학술대회 논문집
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• pp.1151-1156
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• 2008

본 논문에서는 복잡한 환경을 감시해야 하는 도시철도 서비스 구간 내 각종 사고를 예방하고, 사고 및 재난 발생 시 신속한 상황파악 및 대처를 통하여 피해를 최소화할 수 있는 능동적인 감시체계로 변환하기 위한 지능화된 종합감시 시스템을 개발하는데 있어, 요구되는 지능형 감시 카메라의 성능 및 관련기술을 분석하였다.

• 한국철도학회논문집
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• 제14권6호
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• pp.501-506
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• 2011

SE(System Engineering)은 이미 선진국에서 우주항공, 국방 등 다양한 분야에 걸쳐 적용되고 있으나 국내에서는 초기단계로서 철도 및 국방분야에서 제한적으로 적용하고 있는 것이 현실이다. SE기술은 적용범위가 매우 광범위하기 때문에 본 연구에서는 SE기술에서 문서관리 및 요구사항 분석기술을 적용하여 본 연구의 목표인 표준화 기준 작성 및 핵심장치 개발을 효율적으로 수행하는 방법을 연구하였다. 표준화기준에 대하여는 SE 도구를 사용하여 표준화기준간의 추적성 및 이력관리를 수행하였고 사업에서 생성된 모든 문서들을 DB로 구축하여 참여기관들이 사업에 필요한 정보를 공유하도록 하였다. 기본설계단계에서 기능분석을 통하여 핵심장치인 지능형 역사감시시스템의 요구사항이 적절한 지를 검토하였고 요구사항에 따라 지능형 역사감시시스템이 개발되는 지를 관리하였으며 최종적으로 검증된 요구사항을 지능형 역사감시시스템의 표준화기준으로 고시할 계획이다.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 추계학술대회 논문집
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• pp.1360-1365
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• 2008

Most recognition algorithms for intelligent surveillance system are based on analysis of the video collected from one camera. Video analysis is also used to compute the internal parameters used in the recognition process. The algorithm computes only the video of the fixed area so that it is a insufficient method and it could not use information of the related areas. However, intelligent integrated surveillance system should be constructed to correlate the events in the other areas as well as in the fixed area. In this paper, in order to construct the intelligent integrated surveillance system, we describe the method not to focus on the video of each camera but to aware the whole event by sharing information between cameras, which is more accurate. The method would be used to aware the event in the fixed area such as stations in urban transit.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 추계학술대회 논문집
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• pp.1106-1112
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• 2008

Recently many new subway lines and light rail lines are demanded to build as CBTC system for advanced transportation needs. Already several lines are being installed and some other are planned this days. In early 2008, the first korean CBTC project, Bundang Line Intelligent Train Control System was finished successfully then it showed that many advantage of its functionalities to demonstrate. Nowaday, the technology of CBTC in Korea is not standing alone by itself yet, even though a lot of localization was done last decade include ATS (Automatic Train Supervision) and Radio Communication and manufactures and installations, because the core equipment of CBTC is rely on oversea technologies of major railway signal companies. KRRI has been preparing to develop the core equipment of CBTC (wayside ATP and onboard ATO/ATP) with other 14 local railway signal companies. Now they have consisted two consortiums to develop the core equipment by themselves. In this paper, I will mention about how we should focus on the output for viewpoint of interpretabilities between the two groups and review the case study of front developers efforts considering to standardizations we should be following.