• Title/Summary/Keyword: intelligent railway system

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An Application of Non-contact IC-Card for Railway (철도에 있어서의 비접촉 IC카드 이용)

  • Park, Bong-Soon;Park, Seok-Ha;Kim, Yang-Mo
    • Proceedings of the KIEE Conference
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    • 1997.07a
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    • pp.364-366
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    • 1997
  • This paper is investigated about the IC-card being expanded gradually, and will be presented the probability applying to fare collection system of railway. To become an intelligent system for railway system, it is necessary to acquire the information for the passengers by non-contact method.

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Vision based Monitoring System for Safety in Railway Station (철도역사 안전을 위한 비전기반 승강장 모니터링 시스템)

  • Oh, Seh-Chan;Park, Sung-Hyuk;Lee, Chang-Mu
    • Proceedings of the KSR Conference
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    • 2007.05a
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    • pp.953-958
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    • 2007
  • Passenger safety is a primary concern of railway system but, it has been urgent issue that dozens of people are killed every year when they are fallen from train platforms. In this paper, we propose a vision based monitoring system for railway station platform. The system immediately perceives dangerous factors of passengers on the platform by using image processing technology. To monitor almost entire length of the track line in the platform, we use several video cameras. Each camera conducts surveillance its own preset monitoring area whether human or dangerous object was fallen in the area. Moreover, to deal with the accident immediately, the system provides local station, central control room employees and train driver with the video information about the accident situation including alarm message. This paper introduces the system overview and detection process with experimental results. According to the results, we expect the proposed system will play a key role for establishing highly intelligent monitoring system in railway.

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Development and Performance Test of DC Smart Metering System for the DC Power Measurement of Urban Railway (도시철도 직류 전력량 계측을 위한 직류용 스마트미터링 시스템 개발 및 성능시험)

  • Jung, Hosung;Shin, Seongkuen;Kim, Hyungchul;Park, Jongyoung
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.63 no.5
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    • pp.713-718
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    • 2014
  • DC urban railway power system consists of DC power network and AC power network. The DC power network supplies electric power to railway vehicles and the AC power network supplies electric power to station electric equipment. Recently, because of power consumption reduction and peak load shaving, intelligent measurement of regenerative energy and renewable energy adapted on DC urban railway is required. For this reason, DC smart metering system for DC power network shall be developed. Therefore, in this paper, DC voltage sensor, current sensor, and DC smart meter were developed and evaluated by performance test. DC voltage sensor was developed for measuring standard voltage range of DC urban railway, and DC current sensor was developed as hall effect split core type in order to install in existing system. DC smart meter possesses function of general intelligent electric power meter, such as measuring electricity and wireless communication etc. And, DC voltage sensor showed average 0.17% of measuring error for 2,000V/50mA, and current sensor showed average 0.21% of measuring error for ${\pm}2,000V/{\pm}4V$ in performance test. Also DC smart meter showed maximum 0.92% of measuring error for output of voltage sensor and current sensor. In similar environment for real DC power network, measuring error rate was under 0.5%. In conclusion, accuracy of DC smart metering system was confirmed by performance test, and more detailed performance will be verified by further real operation DC urban railway line test.

Accident Prevention Technology at a Level Crossing (철도건널목 사고방지를 위한 방안 연구)

  • Cho, Bong-Kwan;Ryu, Sang-Hwan;Hwang, Hyeon-Chyeol;Jung, Jae-Il
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.57 no.12
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    • pp.2220-2227
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    • 2008
  • The safety equipments of railway level crossing which are installed at intersections between roads and railway lines prevent level crossing accidents by informing all of the vehicles and pedestrians of approaching trains. The intelligent safety system for level crossing which employs information and communication technology has been developed in USA and Japan, etc. But, in Korea, the relevant research has not been performed. In this paper, we analyze the cause of railway level crossing accidents and the inherent problem of the existing safety equipments. Based on analyzed results, we design the intelligent safety system which prevent collision between a train and a vehicle. This system displays train approaching information in real-time at roadside warning devices, informs approaching train of the detected obstacle in crossing areas, and is interconnected with traffic signal to empty the crossing area before train comes. Especially, we present the video based obstacle detection algorithm and verify its performance with prototype H/W since the abrupt obstacles in crossing areas are the main cause of level crossing accidents. We identify that the presented scheme detects both pedestrian and vehicle with good performance.

A Safty Test Discussion of Intelligent Air Cleaner System in Urban Railway Vehicle (도시철도 지능형 차량공기청정시스템 안전성 시험 고찰)

  • Cho, Kwan-Hyun;Kim, Woo-Kyo;Kim, Kwan-Sn;Nam, Hee-Bog;Kam, Soon-Bark
    • Proceedings of the KSR Conference
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    • 2011.10a
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    • pp.142-149
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    • 2011
  • The basic of installing smart air cleaner in railway system is improvement of continuous real time sensing technologies. And building smart air cleaner in railway system with IT is needed. When smart air cleaner in railway system is developed, the installation of sensor which is for measuring air quality in the passenger room and setting revolution cycle of filter which is for removing fine dust is very important. In order to install it in a train which is now running, after making of standard test certification and verification of product's stability with enough self-test, application test will be performed.

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An Efficient Configuration of the Intelligent Surveillance System for Urban Transit (도시철도 지능형 종합감시시스템의 효율적 구성방안)

  • An, Tae-Ki;Shin, Jeong-Ryol;Han, Seok-Youn;Lee, Won-Jae;Yun, Byeong-Ju;Kim, Hyeong-Min
    • Proceedings of the KSR Conference
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    • 2009.05a
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    • pp.466-471
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    • 2009
  • Most surveillance systems of urban transit are based on CCTV(Closed Circuit Television). However, there is limitation that the passive monitoring system using CCTV in urban transit surveillance system to monitor massive environment applies thousands of cameras and it depends on operator's instinctive judgement whether it happens an accident or disaster. Urban transit operation corporations try to introduce the intelligent technology to overcome these problems as mentioned above. The intelligent system can be organized various ways and made configuration for purpose and function. In this paper, we describe the configuration problems of the existing surveillance system and propose the proper intelligent system configuration for urban transit We expect that the proposed configurations are very helpful to introduce the intelligent technology for urban transit surveillance system.

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A study on the protection system in electrified railways system (전철시스템에서의 보호시스템에 관한 연구)

  • LEE Heeyong;KIM Wanggon;LEE Jongwoo
    • Proceedings of the KIEE Conference
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    • summer
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    • pp.1406-1408
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    • 2004
  • Recently, the load increasement and regenerative system of electrified railway system make a difficult to distinguish between the load current and fault current and it need a new intelligent protection system. In this paper, we proposed intelligent algorithm for discriminating normal and abnormal situation instead of the system being operated abnormally.

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A design and implementation of Intelligent object recognition system in urban railway (도시철도내 지능형 객체인식 시스템 구성 및 설계)

  • Park, Ho-Sik
    • The Journal of Korea Institute of Information, Electronics, and Communication Technology
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    • v.11 no.2
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    • pp.209-214
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    • 2018
  • The subway, which is an urban railway, is the core of public transportation. Urban railways are always exposed to serious problems such as theft, crime and terrorism, as many passengers use them. Especially, due to the nature of urban railway environment, the scope of surveillance is widely dispersed and the range of surveillance target is rapidly increasing. Therefore, it is difficult to perform comprehensive management by passive surveillance like existing CCTV. In this paper, we propose the implementation, design method and object recognition algorithm for intelligent object recognition system in urban railway. The object recognition system that we propose is to analyze the camera images in the history and to recognize the situations where there are objects in the landing area and the waiting area that are not moving for more than a certain time. The proposed algorithm proved its effectiveness by showing detection rate of 100% for Selected area detection, 82% for detection in neglected object, and 94% for motionless object detection, compared with 84.62% object recognition rate using existing Kalman filter.

Recent Trends in the Intelligent Surveillance Technologies (도시철도 지능형 감시시스템에 대한 국외기술 동향 분석)

  • An, Tae-Ki;Shin, Jeong-Ryol
    • Proceedings of the KSR Conference
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    • 2008.06a
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    • pp.630-635
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    • 2008
  • An urban transit is representative public transportation which lots of people take everyday. Especially, the station of urban transit is one of the very important public civil infrastructures. From the teachings of subway fire disaster occurred at Daegu on 2003, a certain incident might create large numbers of deaths or injuries and a lot of damages to the subway station without having an accurate grasp of emergency situation and doing proper action on the situation. Therefore, the passive surveillance system, which means the present CCTV based system, needs to be changed into the active one. The active surveillance system is the CCTV based system with intelligent softwares which affords to prevent a certain incident or trouble and its aggravation. In this paper, the state of the art of the representative companies developing intelligent softwares and its application sites of Australia and Hong Kong are briefly introduced. Finally, with the consideration of its recent trends, some technical contents for the intelligent surveillance system of domestic urban transit are briefly described.

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