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박성백,신훈규,권영수,Park, Sung-Back,Shin, Hoon-Kyu,Kwon, Young-Soo 한국전기전자재료학회 2014 전기전자재료학회논문지 Vol.27 No.10
In this study, the temperature control device was designed for the study in order to detect the output in frequency of temperature, and the study confirmed accurate temperature values treated systemically by using expanded A/D converting Technology. The control technology of functional sensor included the output error Detection. For the future study, it is necessary to implement a control device by building multiple circuits integrally with different types of sensors such as a automatically and intelligent notification function sensors.
폴리이미드 용량형 습도센서의 전극 패턴에 따른 감습 특성
박성백,신훈규,임준우,장상목,권영수,Park, Sung-Back,Shin, Hoon-Kyu,Lim, Jun-Woo,Chang, Sang-Mok,Kwon, Young-Soo 한국전기전자재료학회 2014 전기전자재료학회논문지 Vol.27 No.9
Electrode pattern effects on the capacitive humidity sensor were investigated. The fabrication of the capacitive humidity sensor was formed with three steps. The bottom electrode was formed on the silicon substrate with Pt/Ti thin layer by using shadow mask and e-beam evaporator. The photo sensitive polyimide was formed on the bottom electrode by using photolithography process as a humidity sensitive thin film. The upper electrode was formed on the polyimide thin film with Pt/Ti thin layer by using e-beam evaporator and lift-off method. Three electrode patterns, such as circle, square, and triangle pattern, were used and changed the sizes to investigate the effects. The capacitances of the sensors were decreased 622 to 584 pF with the area decreament of patterns 250,000 to $196,250{\mu}m^2$. From these results, a capacitive humidity sensor with photo sensitive polyimide is expected to be applied to a high sensitive humidity sensor.
광양만에서 소형 저인망으로 어획된 어류의 종조성 및 양적 변동
박성백(Sung-Back PARK),이성훈(Sung-Hun LEE),김진(Jin KIM),한경호(Kyeong-Ho HAN) 전남대학교 어업기술연구소 2019 어업기술연구소보고지 Vol.12 No.1
Species composition and seasonal variation in Kwangyang bay were investigated 6 times from October, 1999 to August, 2000. The fishes caught by a small otter trawl were identified into 10,017 individuals, 72 species, 61 Genus, 38 families and 9 orders. Perciformes were dominant identified into 31 species, 28 Genus and 17 families. Followed by Scorpaeniformes (12 species, 8 genus and 6 families) and Pleuronectiformes (9 species, 8 genus and 4 families) and Clupeiformes (7 species, 6 genus and 3 families) were caught in the study period. During the study, most dominant species was Leiognathus nuchalis by 6,257 individuals (62.46%) of the total, followed by Konosirus punctatus by 937 individuals (9.35%), Engraulis japonicus by 612 individuals (6.11%). The diversity was the highest in February (H’=1.931), while the lowest in April (H’= 1.001). The evenness was the highest in February (E=0.645), while the lowest in April (E=0.268). The dominance was the highest in April (d=0.858), while the lowest in February (d= 0.521). The richness was the highest in April (E=4.860), while the lowest in February (E=2.834). The similarity of community structure was 64.36% between June and August, which was the most similar in monthly similarity.
장대레일 구간 침목교환 작업 후 도상저항 회복 특성 연구
백인철(In-Chul Back),김영철(Young-Chul Kim),권세곤(Se-Gon Kwon),박성백(Sung-back Park) 한국철도학회 2016 한국철도학회 학술발표대회논문집 Vol.2016 No.5
장대레일은 승차감 향상 등 여러 가지 장점을 가지고 있어 널리 사용되고 있으나 온도변화에 따른 레일 내부에 축력이 발생하여 레일 파단, 좌굴과 같은 문제점을 가지고 있다. 특히 하절기 장대레일 좌굴은 열차탈선과 같은 대형사고와 직결되어 있어 세밀한 관리가 요구되고 있다. 본 연구에서는 일반철도 장대레일 구간을 대상으로 침목교환에 따른 도상이완작업 후 도상횡저항력 측정을 시행하여 작업 기간 경과에 따른 도상저항력 회복특성을 파악하였다. 또한 위 계측결과를 토대로 하절기 장대레일구간 도상이완작업 시 충분한 도상저항력이 확보 될 수 있는 적정 서행기간 및 서행위치를 검토하여 효율적 유지보수 및 열차안전 확보 방안을 제시하고자 하였다. CWR is widely used because of several advantages such as improved ride quality. However, the axial force occurs as the result of the breakage of railway and is making a problem like buckling Especially, CWR buckling is directly related to the big accident such as a train derailment in summer. So, Fine management is essential for this rail. In this study, after work the sleeper exchange for the CWR section measures the ballast resistance, identify recovery characteristics of the ballast resistance of the working period has elapsed. Also we want to review the slowing down period and section where it can be secured enough ballast resistance during the summer period CWR ballast relaxed work based on the measurement results presented above, the effective safety measures.
권세곤(Se-gon Kwon),김영철(Young-chol Kim),박성백(Sung-back Park),손의식(Eui-sik Son) 한국철도학회 2015 한국철도학회 학술발표대회논문집 Vol.2015 No.10
최근 연약지반 장대레일 구간에서 노반침하 발생으로 열차안전운행을 위한 도상횡저항력 확보, 궤도선형관리 등 유지보수를 반복적으로 시행하고 있으나 반복적인 도상자갈 보충에 따른 증가된 도상두께의 적정성에 대한 검토가 요구되고 있다. 본 연구에서는 연약지반 장대레일 일부구간을 대상으로 도상두께 및 어깨높이에 따른 도상횡저항력의 영향을 분석하고, 향후 노반침하가 지속 될 경우의 운영 및 유지관리 입장에서 대책을 제시하였다. Recently the roadbed settlement is occurring to the soft ground CWR track. It is repeatedly performed in order to secure train safety and maintenance for ensuring lateral resistance and track linear management. But the review of the adequacy of the ballast thickness to continue to enforce ballast supplement is required. In this study, soft ground CWR track of some sections analyzed the impact of the lateral resistance in accordance to and shoulder height. Forward roadbed settlement of the case to be continued is suggested alternatives in operational and maintenance
고정크로싱 분기기 증속시험을 통한 차량·궤도 주행안전성 평가
권세곤(Se-gon Kwon),서종민(Jong-min Seo),박용주(Yong-ju Park),박성백(Sung-back Park) 한국도시철도학회 2017 한국도시철도학회논문집 Vol.5 No.3
현재 분기기 직선 측 최대 통과속도 제한기준은 일본의 협궤사용에 따른 주행안전성 확보를 위한 기준을 준용한 것으로 표준궤간을 사용하는 국내의 분기기 최대 통과속도 산정 기준은 없는 실정이다. 반면 국외에서는 분기기 직선 통과 시 속도 제한 없이 일반구간의 최고속도와 동일하게 열차를 운행하고 있다. 이에 따른 국내 열차운행 효율성 향상을 위하여 속도향상이 지속적으로 요구되고 있다. 따라서 본 연구에서는 주행안전성 평가 및 대상이 될 고정크로싱 분기기를 선정하고 증속시험을 시행하여 현행 분기기 종류별 및 열차종별, 속도대별 주행 안전성 평가 항목 및 기준에 의거하여 진동가속도 및 동적응답을 측정하고 분석하였다. 연구결과 KTX-산천의 경우 PCT 고정크로싱 분기기에서 160km/h까지 차량·궤도 주행안전성 기준을 만족하는 것으로 평가되었다. Korean railway applies speed limit of turnout rigid crossing which is Japanese standards based on narrow gauge. There is no such standard in Korean railway although using different gauge. In other countries, there is no speed limit of turnout rigid crossing, and their trains are passing the crossing with maximum speed of their conventional lines. Exceeding train speed is needed for efficiency of train operation in Korean Railway. Therefore, in this study, we chose turnout rigid crossing for the running safety evaluation. We had done speed test with several speeds, and we measured and analyzed vibration accelerations and dynamic response based on the criteria of Korean running safety evaluation with the type of current turnout rigid crossing and train. As a result of this study, Korean high speed train, KTX-Sancheon is satisfied with the running safety evaluation when the train is passing through PCT turnout rigid crossing with 160km/h.