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류제(Ryu Je),황병일(Hwang Byoung-Il),이상남(Lee Sang-Nam),류희문(Ryu Hee-Moon),변윤섭(Byun Yeun-Sub) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-
Bi-modal tram is a new conceptual transit mean for public transportation integrating thoroughfare and railroad vehicle’s characteristics together. This paper describes about a software design which will be applied to an automatic driving system, which is called NCS (Navigation Control System), considering such multiplicity of mechanical characteristic. The NCS adopts propulsion, braking, and direction control functions for a tram and utilizes various sensors to fully take control over such functions. In this paper, we defined and analyzed the capabilities of the NCS. Those capabilities are designed with a UML 2.0 based object-oriented modeling technique. Moreover, to ensure the complete operation of such capabilities, a communication protocol (which is capable of controlling sensors, propulsion, brakes, and traveling directions) is designed here. Throughout the paper, firstly, all the NCS related functions are discussed in accordance with the equipments they are belonged to; secondly the UML modeling application techniques for the defined functions and protocols for the communications between equipments are introduced; and lastly a validation process for the design specifications is going to be discussed.
바이모달 저상굴절차량의 자동운전시스템을 위한 시뮬레이터 구현
류제(Ryu Je),황병일(Hwang Byoung-Il),이상남(Lee Sang-Nam),류희문(Ryu Hee-Moon),변윤섭(Byun Yeun-Sub) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.5월
This paper discusses about the implementation of a simulator for the Navigation Control System(NCS) of bimodal tram. To operate a NCS of bimodal tram, values of all sorts of sensors installed in bimodal tram should be transmitted to the NCS, and the NCS calculates the measured sensor values to determine traveling direction, traveling speed, current position etc. The implementation of the simulator consists of a device applying driver’s input transaction function & virtual sensor program and a sub-rack device that controls communication with the NCS to evaluate navigation control function. The virtual sensor program can create routes (map), traveling profiles & seat information et cetera in order to transmit to the NCS, analyzes driver's input values and NCS output values to create virtual sensor values. The sub-rack device takes charge of communication with the NCS using CAN-OPEN, CAN-J1939, MVP protocols. This paper discusses about the implementation of the simulator and afterwards analyzes and evaluates the NCS simulation results.
CAN-Open 프로토콜 기반의 자동운전 이중계 시스템 구현
류제(Ryu Je),김재민(Kim Jae-Min),이상남(Lee Sang-Nam),류희문(Ryu Hee-Moon),변윤섭(Byun Yeun-Sub) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.11월
This paper discusses about the implementation of a redundancy system for the Navigation Control System(NCS) of bimodal tram in order to improve its safety level. Each devices are communicated with each other through CAN-Open network. In case of NCS, CAN-Open network is constructed as Master/Slave structure. Also we set most important functionalities into the master device. In this reason, if errors happen from master device while tram is running, it will cause critical damage to tram and passengers. In order to prevent causing critical damages, we implement a redundancy for the master which can detect errors and handle those errors. To achieve our goal, we determine all of errors from master and developing way of detecting those errors. Also we define procedure when master fails how secondary master take a role of master. Then we determine NCS safety level by analyzing and evaluating implemented system.
IP 방식의 종합감시 시스템을 위한 분산 소프트웨어 연구
송규연(Song Gyu Youn),류희문(Ryu Hee Moon),안태기(An Tae Ki),이우동(Lee Woo Dong) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-
The surveillance system for urban transit now adapt the newest IT technology. The Surveillance system analyzes the video information from various cameras intelligently and determines the critical status automatically. Other sensors, for example fire sensor and audio sensor are used in the surveillance system for increasing the correctness of surveillance. The surveillance system tries to increase the performance of surveillance by gathering lots of information for the current situation and analyzing them intelligently. IP-Based Integrated system needs the distributed computer system with location and functions. For correctly running this system, a distributed software is needed. In this paper, we study the distributed software for IP-based integrated surveillance system. The required functions, safety and extendability are suggested.
고속전철용 Event Recorder를 위한 분석도구 소프트웨어 연구
송규연(Song Gyu Youn),이상남(Lee Sang Nam),류희문(Ryu Hee Moon),김광열(Kim Kwang Yul),한광록(Han Kwang Rok) 한국철도학회 2009 한국철도학회 세미나자료 Vol.2009 No.5
In high speed railway, event recorder system stores a train speed and the related data for train operation in real time. Using those information, we can analysis the train operation and the reason of train accident. Analysis software gets the stored data from Event Recorder and shows the status of various signals related with train operation. Using it, also we can analysis the train operation before and after the given time. In this paper we propose the analysis software to show and analysis the operation of high speed train. The method of transferring the stored data from Event Recorder into Analysis Software is proposed. We develop the efficient procedure to store the transferred data into analysis system. Also the effective method to show the store data and to analysis them is studied for finding the cause of train accident.
음성 통화 저장 기능을 제공하는 고속전철용 Event Recorder 연구
송규연(Song Gyu Youn),이상남(Lee Sang Nam),류희문(Ryu Hee Moon),백진성(Paik Jin Sung) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-
A event recorder system stores a train speed and the related information for train operation in real time. Using those information, we can analysis the train operation and the reason of train accident. Currently the event recorder only manipulate the data related the train operation mechanically and electrically. In this paper we propose the event recorder to record the voice communication between the manager in the control center and train operator. By recording the voice communication in the high speed train, the correctness of analysis of train accident can be increased. The system architecture of the event recorder with voice recording is studied and interface between other equipment is proposed. And the software architecture of new event recorder is developed. We study the method of converting analog voice signal into digital data and compressing method. Also the architecture of memory to store the compressed voice data and regeneration of original analog voice are studied.
바이모달트램의 자동운전시스템을 위한 시뮬레이션/모니터링 시스템 구현
최종선(Jong-sun Choi),김동민(Dong-min Kim),류제(Je Ryu),류희문(Hee-Moon Ryu),변윤섭(Yeun-Sub Byun) 한국철도학회 2010 한국철도학회 학술발표대회논문집 Vol.2010 No.7
In this paper, we propose a simulator for testing of the Navigation Control System(NCS) in Bimodal-tram. NCS uses values of all sorts of sensors installed in vehicle to decide current position, and to control speed and steering of vehicle to go to a next position. Major functions of simulator are input processing of the driver and generation of virtual sensor data and driving profile(navigation path, magnetic information), and the NCS function. Virtual sensor data is generated according to output data from the NCS, driving profile and input processing of the driver, and monitoring systems is operated separatedly to confirm of NCS operation. This paper discusses about the implementation of the simulator, and analyzes and evaluates the simulation results.
Event Recorder를 위한 Crash Protected Memory 개발
송규연(Gyu-Youn Song),이상남(Sang-Nam Lee),류희문(Hee-Moon Ryu) 한국철도학회 2010 한국철도학회 학술발표대회논문집 Vol.2010 No.7
In high speed railway, event recorder is essential system for analyzing the cause of train accident. It stores train operation sent by train control system in safe memory unit. Crash protected memory, the safe memory unit for event recorder, keeps the stored contents from severe environment. For crash protected memory, we have designed the architecture of concrete enclosure and controller board. Proposed system provides large volume of memory capacity and fault tolerance architecture. For checking the characteristics of proposed crash protected memory specification, the simulation is executed. Simulation results shows the designed crash protected memory meets all requirements.
서기원(Seo Ki-Won),박주연(Park Ju-Yeon),이상남(Lee Sang-Nam),류희문(Ryu Hee-Moon),변윤섭(Byun Yeun-Sub) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.5월
This paper presents a method for precisely localizing and parking of bimodal trams. In order to gain an automatically driving system for bimodal trams, precise up-to-date localization, velocity recognition, distance to next station and precise parking location estimation functions are required. This paper proposes a system consisting of control device, steering device, sensor input equipment, driving system, tachometer, vehicle-side sensors, magnetic markers and magnetic sensors. The tram recognizes the precise location via magnetic markers containing information. Parking position and precise distance calculation is embodied by a tachometer. The vehicle-side sensors are used to assure safe station approaching and parking magnetic markers provide improvement of precision while tram parking. This paper provides a system realizing localization and precise parking and afterwards the automatic drive test results are reported and analyzed.
ETCS 기반 Eurobalise 의 동적 응동 속도 시험방법에 대한 연구
김순호(Kim Soon-Ho),이종우(Lee Jong-Woo),류희문(Ryu Hee-Moon),황윤창(Hwang Yoon-Chang) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.11월
The high speed railroad system in our country was changed to ETCS signal system for guarantee safety in the national railway station. ETCS is being used in Europe. In the current domestic G7 project the driving speed was achieved to 350㎞/h. And the target speed of the next generation high-speed railway development project is 400㎞/h. Therefore, This high speed vehicle that needs a reliable way to deliver information that is very important. Precisely, It is important to measure the transport response speed for telepowering during vehicle moves in high speed. The reliable informations are determined by distance between balise and antenna and level of Telepowering generation voltage. In this study, the development phase and testing phase to test the actual high-speed driving conditions is difficult and impractical. Therefore, it is practical to use laboratory measure equipment to measure the transport response speed plan is about to propose.