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송용수(Yong-Soo Song),김용규(Yong-Kyu Kim),신덕호(Duck-Ho Shin),창상훈(Sang-Hoon Chang) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.10
The maintenance of the turnout is composed of signal field and track field on business the electrical and mechanical field on system. adjustment and maintenance carry forward through coordination with these fields. In the case of turnout equipment used in a first phase of Seoul-Busan high-speed train it is treated by classifying as mechanical adjustments and electrical adjustments. Mechanical adjustment is conducted with focus on fine adjustment to meet maintenance standards limits(1mm or less) about interval of basic rail and tongue rail about each part of track transition equipment. This refers to mechanical adjustments performed mainly with physical changes and movement characteristics between basic rail and tongue rail by considering the overall environment surrounding track side of section installed track transition equipment. However these series of maintenance are conducted in state that high-speed train is not in the process from 1 am to 4 am at night but common workers for maintenance are not familiar with the operation and checking about various situation and the workers are even insufficient. Maintenance training using mixed reality is conducted in the place of business we tried to overcome several problems of safety and time reduction through this training.
송용수(Yong-Soo Song),이재호(Jae-Ho Lee),김용규(Yong-Kyu Kim),창상훈(Sang-Hoon Chang) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.10
The purpose of this study was to analyze and improve the communication interferences in the wireless communication equipments of the CBTC applied to a model intelligence train control system. So far train positions have been traced by the conventional fixed blocking system to control the operation of the trains but the new CBTC system uses the on-ground location to transmit the train positions wirelessly to the ground control center continuously so being more vulnerable to communication interferences. Although the researcher analyzed and improved such interferences in the communication equipments of the CBTC system there remain more rooms for its improvement.
송용수(Yong-Soo Song),백종현(Jong-Hyen Baek),고태균(Tae-Kyun Ko),김용규(Yong-Kyu Kim) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.10
A Consider the dead man's switch installed in each and every locomotive cab which support operational safety on railways around the world. The concept is very simple every 150 to 180 seconds an illuminated push-button demands to be acknowledged so as to know that the Train Driver is alive and active. In the absence of a response over a period of minutes the vigilance control will automatically apply the train brakes and bring the train to a stand. If we multiply the resetting of the vigilance control 60 times per hour by a 10-hour shift it equals 600 presses of the button during the shift that a Train Driver must pay attention to and acknowledge. This adds a fair bit of pressure on the train driver's job particularly when he/she is driving through stations with passengers moving about on platforms in an environment of complex signaling arrangements all the while looking out for restricting signals. From this perspective the Vigilance System's demand to be acknowledged every 150/180 seconds is disturbing and can unnecessarily take a driver's attention away from what is happening outside the confines of the cab. A much more dramatic situation can happen when a train driver is driving hour after hour at night when by Mother's Nature request - people need to sleep. Experience and research shows that the the dead man's switch can be pressed by train driver in a state of deep relaxation and'micro-sleep'. The vigilance control system which is applied to reduce the drive load considering bio-response multiple unit train is proposed.
송용수(Song Yongsoo),이수길(Lee Su-gil),한성호(Han Sung_ho) 대한전기학회 2007 대한전기학회 학술대회 논문집 Vol.2007 No.10
Currently, most of Passenger Service System is supported to VOD in Korea. This current PSS has not internet access, real time broadcasting system and entertainment. The system did not come up to the expectation of consumer. This paper presents an application of new Passenger Service System for developing multimedia as well as wireless communication technology on internet, satellite broadcasting.
송용수(Song Yongsoo),한성호(Han Sung_ho),이수길(Lee Su-gil) 대한전기학회 2007 대한전기학회 학술대회 논문집 Vol.2007 No.10
Recently the application area of wireless LAN has been increased, rapidly. The application area was limited in indoor, but as the data throughput and performance of wireless LAN becomes better the application is to extend to the Internet connection and wireless bridge in outdoor. In this paper, the data throughput of wireless LAN in mobile environment is measured, and the usability of wireless LAN for Train, Telematics, and LBS is confirmed.
송용수(Yong-Soo Song),김백현(Baek-Hyun Kim),김용규(Yong-Kyu Kim) 한국철도학회 2010 한국철도학회 학술발표대회논문집 Vol.2010 No.7
본 보고에서는 틸팅열차가 곡선 구간을 주행할 때의 승차감에 영향을 주는 요인에 대하여 검토하고, 완화 곡선 주행의 승차감의 종합 지표를 제안고자 한다. 완화 곡선 구간에 있어 ①좌우 가속도 최대값, ②좌우 진동 잭 최대값, ③롤각 속도 최대값, ④ 롤각 가속도 최대값의 4변수를 산출하고, 그 가중치 합성합을 작성함으로서, 체감과 상관이 높은 평가가 가능하다는 것을 밝혀내고, 또 이 지표는 “좌우 방향의 병진 진동, 회전 진동(롤링) 각각의 최대값(y<SUB>p</SUB>, y<SUB>j</SUB>)과 변화율 최대값(θ<SUB>p</SUB>, θ<SUB>j</SUB>)으로 구성되어 있다”라고 바꾸어 말할 수도 있다. 또한 이런 기계적인 데이터가 과연 인체 신체에 얼마 만큼의 영향을 미치는가에 대한 실험 또한 병행 하였다. The Purpose of this paper is to characteristics and analysis of ride comfort by using HRV. Although the riding comfort of trains has been managed by setting allowable accelerations of 3-axis motion in cabins, it is impossible for this approach to express the psychophysical relationship between various vibrational factors and riding comfort. in order to propose a function to evaluate the riding comfort of train on conventional railroad, an experiment was performed with the Korea Tilting Tran eXpress(TTX). As a result, by referring to some international standards on the method of evaluating ride comfort, a modified method was proposed to evaluate the lateral vibration in addition to the roll motion on carve transitions.