http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
전종화(Quan Zhong-Hua),박덕규(Park Duk-Kyu),박기수(Park Gie-Soo),류명선(Ryou Myung-Seon),김재식(Kim Jae-Sik),최승갑(Choi Seung-Gap) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.5월
In this paper, the study on the allocation of dedicated radio frequency for the radio communication based CBTC system is performed. The dedicated bandwidth for the the private use in railroad is figured out and the allocatable frequency band, which should be investigated hereafter, is proposed. The result of this study provides the basis to present the requirement of dedicated railroad radio frequency and can be used as an important material for the frequency allocation. Furthermore, it is expected that the result can be contributed to the development on railroad radio communication.
전종화(Zhong-Hua Quan),최선아(Sun-Ah Choi),최동혁(Dong-Hyuk Choi),조찬호(Chan-Ho Cho),박기수(Gie-Soo Park),류명선(Myung-Seon Ryou) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.5
CBTC(Communication Based Train Control) car-borne equipment, a part of the communication based train control system, mainly consists of automatic train protection(ATP) functions, automatic train operation(ATO) functions as well as the interface functions with other equipment including CBTC wayside equipment and train control management system etc. The CBTC car-borne software implementing ATP/ATO functions is a real-time embedded software requiring a high level of safety and reliability. To satisfy the requirements of the CBTC car-borne software, the model-based design techniques are applied with SCADE(Safety-Critical Application Development Environment) to the development of the CBTC car-borne software. In this paper, we illustrate the process modeling the car-borne ATP/ATO functions satisfying system requirement specification with system requirement management, modeling and document generation tools etc. supported by SCADE. In addition, the developed models corresponding to the ATP/ATO functions are applied to the train with CBTC car-borne equipment through its corresponding EN-50128 standards-compliant C code generated by the code generator. It is shown from the test result that the ATP/ATO models developed by SCADE work well while the trains are running in driverless operation mode.
무선통신기반 열차제어시스템에서의 운전시격 계산과 간격제어 성능개선을 위한 열차간격제어 알고리즘
오세찬(Oh, Seh-Chan),김경희(Kim, Kyung-Hee),이성훈(Lee Seong-Hoon),김자영(Kim, Ja-Young),전종화(Quan, Zhong-Hua) 한국산학기술학회 2015 한국산학기술학회논문지 Vol.16 No.10
무선통신기반 열차제어시스템은 관할영역 내에 운행 중인 열차의 위치정보를 지상시스템에서 실시간으로 수신하고 다시 각각의 열차의 차상시스템에 새로운 이동권한을 제공함으로써 안전한 간격제어를 수행한다. 열차제어시스템의 성능은 최소 운전시격으로 평가되며 그것은 열차제어시스템의 간격제어 성능뿐만 아니라 운영특성 그리고 열차의 특성을 반영하여 계산된다. 본 논문은 무선통신기반 열차제어시스템의 운전시격 계산과 운전시격을 개선하기 위한 새로운 열차간격제어 알고 리즘을 제안한다. 제안된 운전시격 계산 방법은 열차제어시스템 간격제어 성능을 반영한 안전마진 추정을 통해 각각 역간 운전시격과 역 운전시격을 정의한다. 또한 제안된 열차간격제어 개선 알고리즘은 간격제어 개선을 위해 거리와 속도를 포함 하는 이동권한을 새롭게 정의하며 선행열차에서 필연적으로 발생하는 제동거리를 이용함으로써 열차의 운전시격을 향상시 킬 수 있다. 제안된 운전시격 계산방법을 한국형 무선통신기반 열차제어시스템의 간격제어 성능을 대상으로 시뮬레이션을 수행하며 개선된 열차간격제어 알고리즘과 비교분석 한다. 시뮬레이션 결과에 따르면 제안된 운전시격 계산방법은 향후 무 선통신기반 열차제어시스템의 성능 지표로 활용이 가능하며 제안된 간격제어 알고리즘은 기존의 무선통신기반 열차제어시 스템의 역 운전시격과 역간 운전시격을 개선할 수 있음을 확인한다. Radio based train control system performs train safe interval control by receiving in realtime the position information of trains driving in the control area of the wayside system and providing onboard system in each train with updated movement authority. The performance of the train control system is evaluated to calculate the minimum operation headway, which reflects the operation characteristics and the characteristics of the train as well as the interval control performance of the train control system. In this paper, we propose the operation headway calculation for radio based train control system and a new train interval control algorithm to improve the operation headway. The proposed headway calculation defines line headway and station headway by the estimation the safety margin distance reflecting the performance of the train control system. Furthermore the proposed Enhanced Train Interval Control(ETIC) algorithm defines a new movement authority including both distance and speed, and improves the train operation headway by using braking distance occurring inevitably in the preceding train. The proposed operation headway calculation is simulated with Korean Radio-based Train Control System(KRTCS) and the simulated result is compared to improved train interval control algorithm. According to the simulated results, the proposed operation headway calculation can be used as performance indicator for radio based train control system, and the improved train control algorithm can improve the line and station headway of the conventional radio based train control system.