• Title, Summary, Keyword: Railway Status

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The Status of National Logistics Information System and The Future of Railway Logistics Information System (국가물류정보화 현황과 철도물류정보화 발전방향)

  • Kim, Dong-Hee;Ahn, Kyoung-Lim
    • Journal of the Korea Safety Management and Science
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    • v.10 no.3
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    • pp.227-235
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    • 2008
  • Recently, as change in global logistics environment, various issues have been presenting. These issues are including the pursuit of low cost-high added value, the realization of sustainable logistics system, the protection of environment, and the development of ubiquitous techniques. To cope with these environment changes and improve the national logistics system, the government have carried out various logistics policies and pushed ahead development of national logistics information network. But still, from a view-point of national logistics, there are several inefficient elements such as information connection and utilization, code/data standardization. In this paper, the survey result of global logistics environment change, logistics policy of a developed countries, domestic logistics policy and information system status will be presented. And from these status, suggestive points are mentioned. Finally the status of railway logistics information and future developments are presented.

Evaluation of the Status of Ballast on the Bridge Expansion f)int using HWAW method (HWAW방법을 이용한 고속철도 교량 상판 신축 이음부 도상 자갈의 이완상태 및 이완범위 평가)

  • Park, Hyung-Choon;Park, Jun-O;Jin, Nam-Hee;Noh, Hee-Kwan;Bae, Hyun-Jung
    • Proceedings of the KSR Conference
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    • pp.997-1002
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    • 2009
  • The local loosening of ballast supporting railway tract cause a differential vertical tract settlement. In the bridge, the temperature change make bridge deck to contract and expand, and this movement cause local loosening of ballast on the bridge expansion joint. Therefore, the evaluation of the status of ballast on the bridge expansion joint is important for the track maintenance of the high-speed railway. In this paper, hwaw method was applied to evaluate the status of ballast on the bridge expansion joint. HWAW method is non-destructive test to evaluate 2-D shear wave velocity map along the railway. Shear wave velocity is directly related with status of ballast. In this research, hwaw method was applied two different types of bridges and determine the degree and the range of the ballast loosening caused by movement of the bridge expansion joint.

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Status of Domestic Railway Product Certification System & Improvement Scheme (국내 철도용품 인증체계 현황 및 개선 방향성)

  • Kim, Tae-Wook;Choi, Jun-Young;Park, Su-Jung
    • Proceedings of the KSR Conference
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    • pp.807-814
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    • 2011
  • Certification of product means that the process and result in which the verification of required performance of each product was done. For this, advanced countries have established their product certification system. This paper summarize the status of foreign railway product certification system and give out meaningful considerations. Moreover, problems of domestic railway product certification system will be discussed and requirements for the improvement of the system will be proposed.

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Status and Characteristics of High Speed Railway Noise (고속철도소음 현황과 특성)

  • 이재원;박준철
    • Transactions of the Korean Society for Noise and Vibration Engineering
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    • v.14 no.11
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    • pp.1161-1165
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    • 2004
  • Railway noise Is one of the main causes of environmental impact. Whenever a new railway line is planned or a housing project near an existing railway is proposed, an estimate of the relevant noise levels is usually required. For this, it is necessary to quantify those parameters that affect the railway noise. Therefore we investigated the noise level which 107 high speed trains generated passing through the block of test railway track between Chunan and Chungwon. This paper shows the status and characteristics of the high speed rallway noise and an accurate prediction of the high speed railway noise.

Lifetime Prediction Using Reliability Analysis Method about for the Electric Detection System (신뢰성분석 기법을 이용한 고속철도 검측시스템의 수명예측)

  • Lee, Hyunwoo;Lee, Byeong-Gon;Lee, Chunghan
    • Journal of Applied Reliability
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    • v.14 no.3
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    • pp.191-196
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    • 2014
  • The importance of railway safety has become increasingly significant domestically as well as internationally, as a series of high speed railway accidents and other major accidents have occurred recently. Especially for the domestic railway, the Korean Railway Safety Law has been revised recently, mandates all the domestic railway operation authorities to render the performance of RAMS and RCM. This study inspects and analyzes the current status of the sensing technology of the electric detection system to tell the status of railway facilities in the highway railway in a real time through a sensor. It also performs the reliability analysis of the electric detection system that is being progressed as a study assignment and suggests the system construction for the higher reliability.

Research on Safety-related Communication of Railway Automatic Block Between Railway Stations System

  • Yun, Pei-Yan;Guo, Jin
    • International Journal of Railway
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    • v.2 no.3
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    • pp.127-130
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    • 2009
  • The system improves the safety and efficiency of railway transport, combining the advanced axle-counter with single-track semiautomatic block. Using computer, to accomplish relay-based semiautomatic block logic operation and axle-counter to check section status, it will further increase the performance of railway transport. Safety-related communication is one of the important topics in railway signal system. By referring to relevant safety-related communication standards, to research on safety-related communication of Micro-computer automatic block between Railway Stations System, the thesis introduces the basic requirements, concept model, codes, and the process, etc.

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A Basic strategy of intermodal transfer information at the railway station (철도역에서의 연계교통 환승정보제공 기본전략)

  • Kim, Young-Hoon
    • Proceedings of the KSR Conference
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    • pp.1556-1561
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    • 2006
  • The railway station is an important intermodal network point of the railway passengers who use the other transportation means and go to the destination. So at the railway station, the device of various intermodal transfer information is needed to transfer the other transportation means. In this paper, we study the passing characteristics of transfer traffic line of the passengers of railway station and the status of information provision for use of transfer facility and we describe the strategies of information provision according to the necessary intermodal transfer to use the other transportation means.

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Development of Multi LED type Door Status Indication Lamp for rolling stock (Multi LED를 이용한 철도차량용 Door Status Indication Lamp)

  • Seo, Bum-Won;Choi, Jae-Sung;Kim, Dong-Il
    • Proceedings of the KSR Conference
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    • pp.1466-1472
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    • 2011
  • Door Inside Lamp of railway rolling stock is installed on interior of the side doors and illuminated at door opening and closing, isolation and fault. So drivers or passengers can notice the door status visually. In the past, a single color or Bi-color LED Lamps have been using and one ~ multiple lamp was used to implement the feature according to client's requirements. (Example: Total of between 2 and 4 lamps are required for the Warning / Emergency operation / Isolation / Fault.) However these design is not easy to apply if there is the mounting space restrictions and the problems such as rising costs can be caused. In addition, it has vulnerability from point of view aesthetic aspects. Therefore the lamp type has been required that has small size and number of colors in order to resolve these problems. Recently multi LED type door status indication lamp have been developed that can meet the requirements and this lamp has been applied in many railway projects. In this study, I'll introduce the general characteristics and mechanical & electrical characteristics of multi LED type door status indication lamp to help development of this kinds of lamp.

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Development of Multi LED type Door Status Indication Lamp for rolling stock (Multi LED를 이용한 철도차량용 Door Status Indication Lamp)

  • Seo, Bum-Won;Choi, Jae-Sung;Kim, Dong-Il
    • Proceedings of the KSR Conference
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    • pp.1668-1674
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    • 2011
  • Door Inside Lamp of railway rolling stock is installed on interior of the side doors and illuminated at door opening and closing, isolation and fault. So drivers or passengers can notice the door status visually. In the past, a single color or Bi-color LED Lamps have been using and one ~ multiple lamp was used to implement the feature according to client's requirements. (Example: Total of between 2 and 4 lamps are required for the Warning / Emergency operation / Isolation / Fault.) However these design is not easy to apply if there is the mounting space restrictions and the problems such as rising costs can be caused. In addition, it has vulnerability from point of view aesthetic aspects. Therefore the lamp type has been required that has small size and number of colors in order to resolve these problems. Recently multi LED type door status indication lamp have been developed that can meet the requirements and this lamp has been applied in many railway projects. In this study, I'll introduce the general characteristics and mechanical & electrical characteristics of multi LED type door status indication lamp to help development of this kinds of lamp.

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A Study on the Wear Characteristics of Wheel Profile for High Speed Rolling-stock (고속철도 차륜답면의 마모 특성에 관한 연구)

  • Hur Hyun-Moo;You Won-Hee
    • Journal of the Korean Society for Railway
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    • v.8 no.5
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    • pp.477-482
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    • 2005
  • Through a year's commercial operation, Korea High Speed Railway has solved defectives from several breakages at the beginning and is going into the stage of stable operation. Among issues, wheel wear becomes a matter of primary concerns in view of vehicle's stability and maintenance. It was understood as above that wear status has been improved in the test by which railway system including vehicles and tracks was stabilized during a year's commercial operation, comparing to that with excessive wear in the trial operation prior to opening to the public. To make out wheel's wear status and characteristics of equivalent conicity at present when the service has been introduced a year ago and the average cumulative mileage of vehicles reach almost 500,000km, wheel's wear types were analyzed with the current vehicles in service.