• Title/Summary/Keyword: 철도경보장치

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Railway Access Alarm System Using Infrared Distance Sensor and Wireless Communication (적외선 센서와 무선통신을 이용한 열차접근경보시스템 개발)

  • Hwang, Yun-Tae;Hwang, Sung-Tae;Lee, Yun-Sung;Kim, Do-Keun;Lee, Tae-Gyu
    • The Journal of the Korea Contents Association
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    • v.17 no.11
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    • pp.303-311
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    • 2017
  • Safety accidents in railway work continue to increase every year; Engineer's negligence, trackside worker's sensory deprivation and signalman's mistake are the main reasons of such incidents. We consider this problem by far the most urgent matter in railway work because of its steady increase and risk of taking a person's life. Based on that account, a new alarm system has developed, that is called Railway Access Alarm System, to allow railway workers to sense the access of trains with not only vision, but also hearing. The detector device of this system is installed on both sides of the track locating 1.5km from the workplace. When the train enters the place, the detector device can sense the entering, sending the detect sign of train to the alarm unit, then the alarm unit warns the workers by the LED lighting and sirens. This system has several advantages compared to previous systems. First, it recognizes the train at a long distance. Secondly, there is no need for wiring work since it is a wireless system. At last, the system works by rechargeable batteries and solar charger so that it is installed in the work places where there is no external power supply. Moreover, it is proven that the system is 100% reliable by the successful on-the spot inspection evaluating the capability.

Development of Safety Equipment for Protection of Trackside Personnel Maintaining Using Radio Frequency Equipment (선로변 작업자 철도교통 사상사고 예방을 위한 안전설비 개발)

  • Hwang, Jong-Gyu;Jo, Hyun-Jeong;Yoon, Yong-Ki;Kim, Yong-Kyu;Jang, Yeong-Jun;Ko, Yeong-Hwoang
    • Journal of the Korean Society for Railway
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    • v.12 no.5
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    • pp.738-743
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    • 2009
  • Personnel maintaining or repairing the railway tracks or signaling device around tracks may experience the sensory disorder when they do routine works for many hours and they may not recognize the leading to train accidents. In order to prevent such train accidents that may occur because railway track workers are unable to recognize the approaching train, a safety-equipment is developed to make the approaching train send signals. We developed the new alarm equipment for protection of trackside maintenance workers using radio signals.

DEVELOPMENT OF PASSENGER SAFETY BOARD FOR RAILWAY VEHICLE USE

  • Mun Hyung-Suk;Eum Ki-Young;Koo Dong-Hoe
    • Proceedings of the KSR Conference
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    • 2003.10c
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    • pp.287-294
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    • 2003
  • There are a lot of curved subway stations in Seoul metropolitan area. These must be straightly constructed as many as possible. But some of stations are roundly designed and built in order to avoid pre-existed underground obstacle such as basement of high rise building, underground gas or water pipe line and subway stations from another line. As shown fig 1, one of the biggest problem occurring curved subway station is considered large gap between platform and vehicle when vehicle completely stop at the station. The gap potentially is in existence to subway passenger as very dangerous factors in rush hours. If passenger accidentally drop their food or leg between this gap when they get on the train and train leaves station, the passenger will be seriously injured by vehicle. In this paper, various design and instruments are introduced and best solution for this matter will be presented. In order to eliminate any possibility of accident happened gap between platform and vehicle, KRRI(Korea Railroad Research Institute) have been developed new safety instrument. These technologies were applied for patent by KRRI. These mechanisms will provide confidence as well as safety to Korean subway passenger

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A Study on Railroad Safety System of Train Alarm Device Using GPS and RF type (GPS와 RF 방식의 열차접근경보장치에 의한 철도 안전 시스템 구축에 대한 연구)

  • Shim Jae-bock;Ohn Jung-guen;Ki Jin Kwon;Lee Kang-won
    • Proceedings of the KSR Conference
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    • 2004.06a
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    • pp.1362-1364
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    • 2004
  • Recently, GPS device is used in various industries. GPS can calculate a moving train's velocity, location, and direction. In this paper, we examine a train approaching alarm device's application, possibility, and merits in the train system. Especially, we investigate solubility of trouble caused by using GPS and RF system for detecting the train's velocity, the location and direction recognition.

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Study on Design of Rail Level Crossing System for Preventing from Non-Alarming Status Caused by Track Shunting Sensibility Errors (레일 단락감도 불량으로 발생하는 무경보 예방을 위한 건널목보안장치 설계)

  • Jang, Dong-Wan;Jeon, Tae-Hyun
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.24 no.1
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    • pp.160-166
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    • 2010
  • Railroad level crossing systems are used to prevent train from collisions by informing pedestrians and vehicles of approaching trains on the level crossing. The current detection systems mostly use track-based electrical circuits to detect approaching trains. The making and breaking of the circuit when the train wheel passes along the track sends a signal to barriers that restrict access to the track. Unfortunately, this track-based signal system is vulnerable to malfunctions in certain situations. If the rail becomes rusted due to moisture, weather conditions, or infrequent use, the electrical circuit detection system could fail. Such a failure could lead to a train-vehicle or train-pedestrian collision. This paper suggests a replacement of the electrical circuit-based system with an infrared detection system. The research shows that an infrared detection system improves safety by reducing the frequency of detection failure of the alarming circuit to system.

Analysis to distance and train speed of portable alarm system using GPS and RF mode (휴대용 열차접근경보장치에 적용되는 GPS모드와 RF모드의 거리 및 속도 분석)

  • Kwon Ki Jin;Ohn Jung-Ghun;Shim Jae-bock;Choi Yung ha
    • Proceedings of the KSR Conference
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    • 2004.06a
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    • pp.1471-1473
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    • 2004
  • A portable train approaching warning device can be used in order to reduce accidents of the workers on the rail, who are working without recognizing the approaching train, and to secure the safety of the workers. It can be installed in the train so that workers can recognize the approaching train. However, it is not easy to identify the location of the train precisely. In this study GPS and RF devices, which are used to calculate the location of the train were reviewed, to see how much error tolerance they have in the field, to analyze the distance for normal transmission between the receiver and transmitter, to verify the conformity of the portable train approaching warning device developed as a prototype model to the current rail system, and to provide the related fields with the analysis results to improve the existing or application technology. Additionally, test methods to locate the train were introduced and each test result was compared and analyzed.

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