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우종혁(Jong-Hyuk Woo),이종인(Jong-In Lee),이용기(Yong-Gi Lee),송정훈(Jeong-Hun Song) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.5
In the case of an urban rail chopper type subway train, varistors have been installed for protecting usual electronic equipments, semiconductor devices(diodes, transistors, thyrister, etc.) communications, measuring, control device and absorbing opening & closing surge of electromagnetic valve. These varistors were steadily reduced dielectric strength as becoming superannuated. Thus there is a problem that reacts more sensitive at the same surge in the general control operation. On existing maintenance, there is not specific standard to replace superannuated varistor. So when maintaining chopper type subway train, all varistors or old varistors that workers checked a discoloration & crack with the naked eye and noticed degradation smell by deterioration are replaced. This study suggests detail standards for judgement that varistors are good or bad chopper type subway train. and it draw a efficient maintenance which efficient maintenance can check more easy the degradation properties variation.
ESS 적용에 따른 도시철도차량의 회생 에너지 이용률 향상 연구
우종혁(Jong-Hyuk Woo),한정호(Jung-Ho Han),이주(Ju Lee) 대한전기학회 2014 전기학회논문지 Vol.63 No.9
In this paper, effect of recharging power by using ESS(Energy Storage System) was investigated when ESS was applied to the train. The recharging power was analyzed and measured. Also, by applying ALVT algorithm, effective recharging and discharging were studied. By using this process, recharging and discharging of the super capacitor were improved which led to enhancing the use of recharging power from the urban Railway vehicles.
우종혁(Jong-Hyuk Woo),이주(Ju Lee) 대한전기학회 2016 전기학회논문지 Vol.65 No.11
Recent energy efficiency policy of green growth for stable power supply is required. Urban transit vehicles is limited to reduce the use of power without reducing the number of runs. Accordingly, when urban rail vehicles is braking, the occurrence of regenerative power is systemically maximized for the purpose of saving energy. As a result when it is braking, the generated power efficiently is used and looking for a way to reduce the electrical energy. In this paper, the brake control system of the Subway Line 3 is analyzed the effect to meet the required regenerative braking produced electricity through minimizing air braking force of service braking.
AI 센서 솔루션을 활용한 원격 운전자 모니터링 시스템
우종혁(Jong-Hyuk Woo),최승원(Seung-Won Choi),서종모(Jong-Mo Seo),김성우(Seong-Woo Kim),안병은(Byung-Eun Ahn),이동주(Dong-Joo Lee),최연석(Yeon-Seok Choi),이인수(Insu Lee) 한국HCI학회 2019 한국HCI학회 학술대회 Vol.2019 No.2
운전자 상태 이상으로 발생하는 교통사고는 그 피해규모가 클 뿐만 아니라, 사고의 예측 및 대응이 불가능하며, 누구라도 사고의 피해자가 될 수 있다는 불안감때문에 사회적 문제로 인식되고 있다. 자동차 관련기술이 발전함에 따라 안전한 운행을 위한 보조장치들이 차량에 적용되고 있지만, 탑승하는 운전자안전을 모니터링하는 장치는 부족한 것이 현실이다. 본 연구는 이미지 센서를 기반으로 Remote PPG 기술과 AI 솔루션을 적용한 원격 운전자 모니터링 시스템을 제안하고자 하며, 연구 결과를 바탕으로 운행 중인 차량과 같이 급변하는 환경에서도 정확한 HR 측정결과를 제공하는 운전자 모니터링 장치 도입에 기여할 수 있을 것이다.
이홍로(Hong-Ro Lee),서광혁(Kwang-Hyuk Seo),우종혁(Jong-Hyuk Woo) 한국철도학회 2014 한국철도학회 학술발표대회논문집 Vol.2014 No.5
Modern society is reducing the emission of greenhouse gas and has set allowable energy emission quantity through frame work of convention climatic change that made by global warming and has binding force. Therefore, developments of high efficiency energy and eco-friendly new renewal energy has been spread on account of serious lack of resources in time of high oil price. As for subway, subway stations and tunnels can flood on account of the ground water caused by digging a tunnels. So water catchment and drainage equipment is operating in order to keep block flooding from ground water. In this paper, we analyzed and evaluated possibilities as new energy that wasting ground water in Gilum subway station can be used in air conditioning system, and presented new cases for continuous research and development on energy saving business using of ground water.
지하역사 제연설비(Smoke Control System)에 관한 연구
이홍로(Hong-Ro Lee),공창모(Chang-Mo Gong),우종혁(Jong-Hyuk Woo) 한국철도학회 2015 한국철도학회 학술발표대회논문집 Vol.2015 No.10
After the aroson at Jungangno station 18. Feb. 2003 at Daegu, People realized difficulties of protection from unspecified fire crime and It brought improved safety conscious. When the fire occurred in Subway station there are difficulties of exhaust smoke, fresh air supply, long distance of evacuation way to the ground, not enough sight distance, smoke inhalation and physical degradation because of characteristics of under ground station It causes many casualties and property damages. In this thesis, I investigate how the smoke control system, the Extinguish active equipment of the Fire fighting equipment category, installs and works with reference of seoulmetro’s stations installation and analyze the smoke control area, system construction, the way to secure the clean layer, maintenance and repair method and so on so that I suggest the installation way to the stations which does not have the smoke control system when they are in the construction of the environment improvement.