• Title/Summary/Keyword: 열차간 통신

Search Result 54, Processing Time 0.033 seconds

Simulation of Noise and Vibration around the Improved Turnout System (개량분기기 인근의 소음진동 시뮬레이션)

  • Eum, Ki-Young;Um, Ju-Hwan;Lee, Chin-Hyung
    • Journal of the Korea Society for Simulation
    • /
    • v.15 no.4
    • /
    • pp.119-128
    • /
    • 2006
  • A turnout system which permits trains to pass from one track to another is a combination of the switch, the crossing, lead rails which are necessary to connect the switch and the crossing, two guard rails and a switch machine for operating the switch. A turnout is the sole moving part among the railway components and has complex configuration, so the safety has always been raised an issue. In Korea, it is planned to adopt the high speed tilting train, which operates at the maximum speed of 200km/h, at conventional lines by the year of 2010. However, for the application of the tilting train to conventional lines, it is prerequisite to establish a stable turnout system allowing the tilting train to pass through it without reducing speed. Therefore, the improved turnout system for the speed-up of conventional lines has been developed and the prototype of the turnout system has been constructed. In this study, simulation of noise and vibration around the improved turnout system was performed in order to predict the generation level of noise and vibration due to passing of the tilting train through the turnout system.

  • PDF

Study on Test methods and Procedures of Hybrid Track Circuit (하이브리드 궤도회로 시험방법 및 절차에 관한 연구)

  • Kwon, Bu-Seok;Jung, Ho-Hung;Lee, Key-Seo;Li, Chang-Long
    • The Journal of the Korea institute of electronic communication sciences
    • /
    • v.9 no.3
    • /
    • pp.335-342
    • /
    • 2014
  • In this paper We study on test methods and procedures for Hybrid Track Circuit's practicalization. It's possible to apply to HTC's Seoulmetro and high-speed train by proposing test method considering special rail environment and RFID tag and leader, antenna We also present the test methods and procedures for safe and reliable of interface among the Hybrid track circuit devices.

Structural Design of 3D Printer Nozzle with Superior Heat Dissipation Characteristics for Deposition of Materials with High Melting Point (고 용융점 소재의 압출적층성형을 위한 우수한 방열특성을 갖는 3차원 프린터 nozzle부 기구설계)

  • Kim, Wan-Chin;Lee, Sang-Wook
    • The Journal of the Korea institute of electronic communication sciences
    • /
    • v.15 no.2
    • /
    • pp.313-318
    • /
    • 2020
  • Since the engineering plastics having a melting point of higher than 300 degrees have a high mechanical rigidity, chemical resistance, friction and abrasion performance, those are being highlighted as metal replacement materials in various industries. In this study, 3D printer nozzle with excellent heat dissipation characteristics are designed and analytically verified to form engineering plastics with high melting points in 3D printers based on the melt-lamination modeling method. In order to insulate between the heat block heated to a melting point of filament material and the upper part of the nozzle where the filament is transferred, the heat brake part with low thermal conductivity was designed to have two separate parts, and a cooling fin structure is further applied to the heat brake part to lower steady-state temperature by air convection. Optimized structural design on FDM nozzle part reduces the temperature at the heat sink and at the end part of heat brake by 50% and 14% respectively, compared to the conventional BCnozzle structure.

A Study on Interoperability for North-South Korean Railway Direct Connection (남북철도 직결운행을 위한 상호운용성 고찰)

  • Park, Eun-Kyung
    • The Journal of the Korea institute of electronic communication sciences
    • /
    • v.13 no.6
    • /
    • pp.1161-1168
    • /
    • 2018
  • On April 27 2018, North-South Korea agreed to establish the practical methods for connecting the railway in the inter-Korean summit talks. This is often reported that the train will be operated directly between Busan and Europe. However, there are many problems for the railway to directly connect between Busan and Europe. Because a train from Busan to Europe should pass through North Korea, China or Russia, and each national railway systems are different. Thus, South Korean railway has to study thoroughly an interoperability before railways directly operates between a nation and another. The standards and technical harmony for direct connection with a different railway network is very important, because a rail transport is a total network system. This paper surveyed a European railway interoperability and studied on the basic direct operation for the North-South Korean railway systems.

Study on Precise Positioning using Hybrid Track Circuit system in Metro (하이브리드 궤도회로를 이용한 지하철 정위치정차에 대한 연구)

  • Jung, Ho-Hung;Ko, Yang-Og;Li, Chang-Long;Lee, Key-Seo
    • The Journal of the Korea institute of electronic communication sciences
    • /
    • v.8 no.3
    • /
    • pp.471-477
    • /
    • 2013
  • We have studied on the possibility of precise positioning using hybrid Track Circuit system. Hybrid Track Circuit uses RFID which replaces UHF. Hybrid Track Circuit is a part of next generation railroad signal system which is available to communicate with a railway on board system based on a realtime operating system. If applicate on a current hand operating subway, phenomenon caused by driver's mistake such as passing a stop without stopping or mismatch error between PSD and train door should be prevented.

An Implementation of the Dual Packet Seamless Transfer Protocol for Safety-related Railway Signaling System Network (철도 신호시스템의 Fail-Safe 네트워크를 위한 DPST(Dual Packet Seamless Transfer) 프로토콜의 구현)

  • Kim, Kyung-Shik;Ryu, Shin-Hyung;Kwon, Cheol;Lee, Jong-Seong
    • Proceedings of the KSR Conference
    • /
    • 2009.05a
    • /
    • pp.396-405
    • /
    • 2009
  • An interlocking equipment of railway signalling systems should have very high functional safety and reliability properties because of its vital railway protection functionality. In order to achieve the required safety and reliability level, an engineer, in general, designs and implements the interlocking equipment to operate under RTOS(Realtime Operating System) environment, and the control hardware architecture redundant to cope with the random failures of system or subsystem. In such an architecture, it's very difficult to implement the interlocking equipment to communicate with various interface systems including the signal operator's terminal. In this paper, we propose a dual ethernet network topology and dual packet seamless transfer protocol algorithm for railway signaling system such as the interlocking equipment. We verify in this paper that the proposed DPST protocol algorithm has the evidence of its robust properties against the random hardware faults and communication errors. The proposed communication structure and algorithm is implemented in the electronic interlocking equipment for the private railway system of Hyundai Steel Company and its performance and properties are validated on the guideline of European Railway Standard EN50159.

  • PDF

Development of realtime high-speed train monitoring system using wireless communications (무선통신을 이용한 실시간 고속열차 모니터링 시스템 개발)

  • Lee, Tae-Hyung;Park, Choon-Soo;Han, Young-Jae;Choi, Seong-Hoon;Kim, Seog-Won
    • Proceedings of the KSR Conference
    • /
    • 2007.05a
    • /
    • pp.1691-1693
    • /
    • 2007
  • Establishing the realtime remote monitoring system of the moving test train is the important issue for the railway systems that provide comfort travel to the passengers. But it is not easy to transmit train's test data to remote site because the train runs tunnels. In this paper, we introduce the realtime monitoring system using wireless communication system which is installed in the test train. This system can provide both correct positions of unstable track and train's running status such as speed, kilopost and acceleration.

  • PDF

A Case study of the automatic operation due to the Train to the Wayside to TWC communication(Focused on the Subway ATO/TWC equipment) (열차와 지상간 TWC 통신에 의한 자동운전에 관한 연구(지하철 ATO/TWC 설비를 중심으로))

  • Hwang, In-Kil;Song, Joong-Ho
    • Proceedings of the KSR Conference
    • /
    • 2006.11b
    • /
    • pp.900-905
    • /
    • 2006
  • 5678SMRT (Seoul Metropolitan Rapid Transit Co) by a ATC/ATO system the other side which is operated with an automatic movement with a manual operation, the Seoul subway 1.2 lines ATS and 3.4 lines adopt a ATC method and they are operated. But it is improving progressively in SMRT railway ATO method. The ATO the operation method leads exchange of information of wayside and train system for and it is possible, the TWC system configuration is becoming wayside and train system and the radio antenna. It discussed the equipment for a TWC system and a automatic operation from the dissertation which it sees. It investigated a data exchange, a message format and an interface control method and it joined in and a system maintenance conservative method it discussed.

  • PDF

On the Application of MIMO systems for railway environment (철도 환경에서의 MIMO시스템의 응용 방안)

  • Lee Cheol Jin;Hwang Hyun Chyeol;Cho Bong Kwan;Shin Seung Hoon;Kwak Kyung Sup
    • The Journal of The Korea Institute of Intelligent Transport Systems
    • /
    • v.3 no.2 s.5
    • /
    • pp.9-17
    • /
    • 2004
  • In this paper, we examine the MIMO(Multiple Input Multiple Output) system in the point of mobile communication that is used for railway environment. First, under the radio environment, wireless channel characteristics are analyzed between moving train and base station, both assuming track side base stations and non-track side base stations. Next, the paper introduces the MIMO system which can be used to solve the problem of performance degradation in railway environment, and analyzes its performance in terms of channel capacity and diversity. We especially compares open-loop scheme with closed loop scheme at the diversity and analyses their performance according to antenna correlation. Finally, the we presents experimental result from the ESCORT project that was studied in railway environment with the MIMO system.

  • PDF

A Study on the Effective application scheme of Subway optical communication system (지하철 광통신 시스템의 효율적 운용방안에 대한 고찰)

  • Kwon, Gi-Jung;Lee, Gi-Seung;Ko, Young-Yun
    • Proceedings of the KSR Conference
    • /
    • 2007.11a
    • /
    • pp.1541-1550
    • /
    • 2007
  • A subway is one of many public transportation means that contributes toward our society including seoul and offering of its service and expression of various information are in need due to users high demand. And there are various class of users. For that reason an optical communication network in the general contorl center and station buildings was installed. Considering the importance of safe operation of subway, optical communication exists to enhance customer satisfaction. Safe operation is essential as its level of reliance accounts for about 95%. this paper will look for ways to promote mutual information interchange and operation know-how with systems of the same kind and sharing a capable of effective operation of systems in place. Optical communication network in the metropolis railroad accepts various kinds of control networks and data networks for train operation. As occasion demands, this paper presents effective application scheme and specialized organization about an optical communication operating system.

  • PDF