ATC장치에 의한 자동운전 및 고장 추적에 관한 연구

김경식(Kim Kyoung-Shik),강덕원(Kang Duk-Won),강리택(Kang Lee-Teag),이종성(Lee Jong-Seong) 한국철도학회 2002 한국철도학회 학술발표대회논문집 Vol.- No.-

According to passenger"s gain and headway"s contraction, railway vehicle is required quick and correct running. The importance of ATC device was increased gradually, and also is acting important role in safe train running and efficient use in this reason. Now, railway vehicle that is manufactured or is remodeled are designed to most automatic driving system, and ATC device design direction than other device of railway vehicle influences to whole system in this reason. Also, according as system becomes complicated gradually, importance of fault tracing function for ATC device is emphasized gradually, and in this reason research about efficient fault tracing method is to act important role heightening reliability of ATC device. In this document, that analyzing about result through examination of automatic train operation system of localization model ATC device(SG-100) and application example, and do so that investigate about efficient fault tracing.

통신기반열차제어시스템(CBTC)에서 지/차상 간 통신기능 불능 시 대처방안에 대한 고찰

강진석(Jin-Seok Kang),강덕원(Duk-Won Kang),박성호(Seong-Ho Park) 한국철도학회 2018 한국철도학회 학술발표대회논문집 Vol.2018 No.5

CBTC(Communication Based Train Control, 통신기반 열차제어시스템)는 열차-지상 간 양방향통신을 이용한 신호시스템으로 열차의 위치가 기존 시스템보다 정확하고 운행의 효율성 및 운행시격 향상 측면에서 많은 장점을 보유하고 있다. 또한 종합관제실에서의 제어 및 모니터링 기능이 강화되어 자동 및 무인운전에 적합한 시스템이다. 하지만 무선통신을 통한 무인운전의 효율성에도 불구하고, 열차-지상 간 통신기능 불능 시 승객 서비스 제공에 심각한 영향을 초래하게 되는바, 본 논문에서는 CBTC 통신기능 불능으로 열차 위치정보 상실 시 운행 복구를 위한 대처방안들을 다룰 것이다. 각 대처방안마다 장 · 단점을 분석하여 운영자가 주변 열차의 상황에 따라 합리적인 열차 복구 방안을 선택하는데 도움을 주고자 한다.

차상 신호시스템 국산화 개발 및 적용

김경식(Kim Kyoung-Shik),강덕원(Kang Duk-Won),이종성(Lee Jong-Seong),박종천(Park chong chon) 한국철도학회 2004 한국철도학회 학술발표대회논문집 Vol.- No.-

This on-board signaling system has been designed with a priority on safety. The system has been devised for both safety, and also the efficiency of train operation. The Importance of signaling system is gradually being recognized with the continuous rise of operating speed and transporting density. Until now, the adaptation of signaling system was totally dependent on foreign signaling companies, as it was difficult to be accessed by domestic technology. But, successful commercial operation of the ATC/ATO system, which is adopted in the development of Kwangju Line No.1 , heralds the use of domestic technology, which will be the basis of all future domestic signaling systems.

통신기반 도시철도 표준 차상핵심장치 개발에 관한 연구

유성호(Yoo Sung-Ho),박종천(Park Chong-Chon),이종성(Lee Jong-Seong),강덕원(Kang Duk-Won),김종기(Kim Jonk-Ki) 한국철도학회 2005 한국철도학회 학술발표대회논문집 Vol.- No.-

The new technology with Wireless LAN (WLAN) is implemented to the railway system, which is attached importance to safety and reliability. Railway control system based on WLAN that is called CBTC (Communication Based Train Control) is being developed by the advanced nations in this field and The system is applied to a new train line and a renovation for outworn equipment. The CBTC system has many merits about increase of capacity, reduction of headway and cost reduction etc.. Therefore, that is come into spotlight to the advanced railway company and the companies have being developed the system. So, we have developed the CBTC system for standardization and localization of the railway signal system.

수중 전기방전을 이용한 에틸렌디아민테트라아세트산 폐액의 처리

조진오(Jin Oh Jo),목영선(Young Sun Mok),강덕원(Duk Won Kang) 大韓環境工學會 2007 대한환경공학회지 Vol.29 No.5

본 연구에서는 저전압 및 고전류에 의해 운전되는 수중 전기방전 기술을 이용하여 고농도(70,000 mg/L) 철(III)-에틸렌디아민테트라아세트산(Fe(III)-EDTA) 폐액을 처리하였다. 폐액내의 두 전극사이에 교류전압을 인가하면 폐액이 저항체의 역할을 하므로 전극주변 폐액의 온도가 빠르게 상승하며 동시에 전기화학반응에 의해 물이 분해되어 산소 및 수소 기체가 생성된다. 물의 기화 및 전기분해에 의해 생성된 기체가 전극주변을 감싸게 되면 이 기체층에서 강력한 전기방전이 일어난다. 과산화수소의 주입이 없을 때는 전기방전에 의해 약 50%의 Fe(III)-EDTA가 제거되었으며, 과산화수소 주입량이 증가됨에 따라 Fe(III)-EDTA 제거효율이 크게 증가하였다. 초기 Fe(III)-EDTA에 대한 과산화수소의 몰비가 24.7 이상일 때는 1 kWh의 에너지로 80 g 이상의 Fe(III)-EDTA를 제거할 수 있었다. 텅스텐 전극과 철전극을 비교한 결과 전극재질이 Fe(III)-EDTA 제거효율에 미치는 영향은 거의 없는 것으로 나타났다. 본 연구의 공정에서는 초기 Fe(III)-EDTA에 대한 과산화수소의 몰비가 24.7 이상일 때 30분 이내에 Fe(III)-EDTA 제거반응이 완료되었다. This study investigated the treatment of liquid waste containing highly concentrated iron(III)-ethylenediaminetetraaceticacid(Fe(III)-EDTA) of 70,000 mg/L by an underwater electrical discharge process using low voltage and high current. When AC voltage is applied to the discharging electrode with the other electrode grounded, the temperature of the liquid waste around the discharging electrode rapidly increases, and at the same time, hydrogen and oxygen gases are formed at the electrode as a result of electrochemical reactions. Ultimately, gases formed by vaporization of water and electrochemical reactions cover the electrode. Since the liquid waste is electrically conductive, it elongates the ground electrode up to the border of the gas layer, where electrical discharge occurs. Without hydrogen peroxide, electrical discharge was able to remove about 50% of Fe(III)-EDTA. As the concentration of hydrogen peroxide added increased, the removal efficiency of Fe(III)-EDTA increased. When the molar ratio of hydrogen peroxide to the initial Fe(III)-EDTA was higher than 24.7, more than 80 g of Fe(III)-EDTA was removed with an energy of 1 kWh. A comparison between tungsten and steel electrodes showed that electrode material did not affect the Fe(III)-EDTA removal. In the present underwater electrical discharge process, the removal of Fe(III)-EDTA was completed within 30 min at molar ratios of hydrogen peroxide to the initial Fe(III)-EDTA higher than 24.7.

펜톤 시스템에서의 과산화수소 분해연구

목영선(Young Sun Mok),조진오(Jin Oh Jo),김석태(Seok Tae Kim),정우태(Woo Tae Jeong),강덕원(Duk Won Kang),이병호(Byong Ho Rhee),김진길(Jin Kil Kim) 大韓環境工學會 2007 대한환경공학회지 Vol.29 No.1

펜톤 반응을 이용한 원전 증기발생기 화학세정 폐액의 고농도 Fe(3)-EDTA 분해

조진오 ( Sin Oh Jo ),목영선 ( Young Sun Mok ),김석태 ( Seok Tae Kim ),정우태 ( Woo Tae Jeong ),강덕원 ( Duk Won Kang ),이병호 ( Byong Ho Rhee ),김진길 ( Jin Kil Kim ) 한국공업화학회 2006 공업화학 Vol.17 No.5

플라즈마를 이용한 액상 폐기물 처리 전원장치 개발 및 분해 기술 개발

한철우(Chul-Woo Han),김준성(June-Sung Kim),박상훈(Sang-Hoon Park),황리호(Lee-Ho Hwang),이병호(Byong-Ho Rhee),강덕원(Duk-Won Kang),김진길(Jin-Kll Kim) 대한전기학회 2004 대한전기학회 학술대회 논문집 Vol.2004 No.7

傳統 歌曲의 伴奏旋律에 關한 分析的 硏究 : 男唱, 羽調 二數大葉 系列曲의 奚琴 伴奏 旋律을 中心으로 Centering on the Haegum Part of the Male Voice of UJO I SAKATAEYOP and its Variations

姜德元 건국대학교 교육대학원 1988 敎育論叢 Vol.10 No.-

Kagok, one of the most traditional Lyric songs of Korea, is called one of three Chongga together with kasa, sijo. This Lyric song has larger sectional structure and scale, and is accompanied to the musical instruments such as komungo, Kayagum, taegum , p'iri, haegum ,tanso, yanggum, changgo, etc. This Lyric song, beginning in mandaeyop and developing into chungtaeyop, saktaeyop and its variations , nong, nak, p'yon, is considered very important. The purpose of this study is to make a comparative analysis of the melodic differences between ujo i saktaeyop and its variations of male voice part, between voice part and aegum part. The conclusions of the analysis areas follows: Firstly, comparing song part of i saketaeyop with that of its variations in view of melody, the ratio of difference reachs 22.2% in u-chung, 9.9% in u-p'p'yong, 11.1% in u-tu. But the ratio of difference amounts to 22.8% comparing p'yonggo 'kyong-song-ch'ul....' with p'yonggo 'saed-pyol-chi-cha...,' the ratio indicates 14.6% comparing chunggo 'in-shim-un...' with chunggo 'ch'ong-gang-e...'. The musics with the same title, but with different poem may be regarded as more independent than the variations of i saktaeyop with different title. Secondly, as shown in the charter 11, the melody of song part in u-chung, u-p'yong, and u-tu is the reduced or enlarged pattern of the rhythm of u-i for song part, and shows the difference of arranfementcompared with the melody of u-i. Thirdly, as can be noticed in Chart 11, the melodies of song part of u-i, u-chung, u-p'yong,u-tu consist of 'melody A' to 'melody F'. In addition to these 6 kinds of melodies, haegum part includes, melody G' to 'melody J' and the songs are acompaied to the haegum with its distinctive 'melodies, different but harmonious. Its key melody is 'melody A', which its distinctive melodies, diffrent but harmonious. Its key melody is 'melody A', which amosts to 35%(84 melodic patterns of 240). Fourthly, the melodies of haegum part are made up of the almost same as that of song part, but the number of the sounds, different with its corresponding sounds of song parts, increases. (the rate of difference. 25.9%(41 out 158 beats) in u-i, 27.8%(44 out of 158) in uc-hung 36.1%(57 out of 158) in u-'pyong, 46.8%(57 out of 158) in u-tu.) This increase indicates that haegum part comprehends the unique technique of haegum and the distinctive melodies, and has been changed into the unique melodies. Finally, investigating the interval between the sound of haegum part and its counterpart of song part, the interval is mostly composed of fourth interval, that is, when the sound of song part is hwang(Eb), its counterpart of the haegum part is, chung(Ab), when tae(F), it is im or chung(Ab), when chung(Ab), it is tae(F), or im(Bb), when im(Bb), it is chung(Ab) or tae(F) or hwang(Eb), when nam(C), it is tae(F). So far, the melodic comparison between haegum part and song port for male voice of ujo i saktaeyop, chunggo, p'yonggo, tugo have been referred. But many questions remain to be solved; 1) a analysis of the tone before or after the tone which shows difference in both parts. 2) a study of the melodic comparison between song parts and other accompaniment part. 3) a study of the melodies which vary according to poem.

Determination of Attenuation Correction Methods According to the Type of Radioactive Waste Drums

Kwak, Sang-Soo,Choi, Byung-Il,Yoon, Suk-Jung,Lee, Ik-Whan,Kang, Duk-Won,Sung, Ki-Bang 대한방사선 방어학회 1997 방사선방어학회지 Vol.22 No.4

비파괴적인 방법으로 방사성폐기물드럼에 대한 핵종분석을 수행할 때 드럼내 매질에 의한 방사선의 감쇠에 의해 핵종분석장치로 측정한 계수값은 실제 드럼내 방사능에 의한 계수값보다 작게 나타나 결과적으로 방사능의 측정결과가 과소평가된다. 그러므로 드럼내 매질에 의한 감쇠를 보정해 주어야 하는데 감쇠 보정방법은 드럼내 매질의 분포나 매질의 밀도에 따라 달리 적용해야 한다. 본 연구에서는 원자력발전소에서 발생하는 드럼 종류별로 모델드럼을 제작한 후 모델드럼에 표준감마선원을 넣고 핵종분석장치를 이용해 측정을 하여 드럼내 매질의 밀도를 구하였고, 이 값을 실제 매질의 밀도와 비교해 드럼종류에 따라 매질에 의한 최적의 감쇠 보정방법을 결정하였다. 그 결과 잡고체드럼의 경우에는 전송선원 보정방법과 평균밀도 보정방법, 차폐잡고체드럼의 경우 전송선원 보정방법과 두 감마선피크비교 보정방법이 최적의 감쇠 보정방법임을 알수 있었고, 고밀도드럼인 폐수지, 농축폐액 및 폐필터드럼의 경우에는 평균밀도 보정방법과 두 감마선피크비교 보정방법을 사용해 드럼내 매질의 감쇠를 보정할 수 있다. The measured radioactivity of gamma-emitting radionuclides in each radioactive waste drum using the non-destructive waste assay method is underestimated than real radioactivity in radioactive waste drum because the gamma-rays are attenuated within the medium. Therefore, the measured radioactivity should be corrected for the attenuation of gamma-rays. For the correction of the attenuation of gamma-rays, the attenuation correction method should be applied differently by considering the distribution and density of medium in radioactive wastes frum generated from nuclear power plants. In this study, the model drums were fabricated for simulating five types of radioactive waste grums generated from nuclear power plant and the optimum methods of the attenuation correction were experimentally determined to analyze the activity of radionuclides in the waste drum accurately using the segmented gamma scanning system. With the determination of the attenuation correction methods from the experimental results, the transmission method and the average density method for the shielded miscellaneous waste drum were used to measure the density of medium in waste drums. Also, the average density method and the differential peak absorption method for the spent resin durm, the paraffin solidified drum, and the spent filter drum were used.