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차량동역학 해석을 통한 무인차량의 DR항법에 관한 연구
정승권(Seungkwon Jung),박명욱(Myungwook Park),장재훈(Jaehoon Jang),김정하(Jungha Kim) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
This research proposes a navigation algorithm with DR through vehicle’s dynamic analysis. GPS system sometimes lose their signals and receive inaccurate position data due to many factors, such as obstructions. This paper shows that GPS failure can be solved by using a DR navigation method with encoders and that position errors can be decreased by using RTK_GPS units. In addition to this method, steer angle can be calculated by single track model.
정승권(Seungkwon Jung) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
Recently driver assist system has a tendency to use the technology of sensors for pre-safety. Blind Spot Detection(BSD) system is one of that. BSD system uses two radar sensors installed in rear bumper. It warns a driver when a vehicle is closing to blind spot zone. But it has the performance limitation in some cases such as close overtaking with lane change the ego lane of subject vehicle to the next lane. A vehicle collision can happen because of the warning delay time in BSD system. The performance limitation in BSD system is found out by vehicle test in this paper and the way to improvement is presented.
인천시 자치구별 미세먼지 농도에 따른 호흡기 및 심혈관계 외래환자 수 상관분석
이승운(Seungwoon Lee),정승권(Seungkwon Jung) 한국환경보건학회 2020 한국환경보건학회지 Vol.46 No.3
Objectives: This study was conducted to identify the effects of PM10 and PM2.5 on hospital visits in the Incheon area over the period of 2016-2018. Methods: We applied correlation analysis and Poisson regression to perform the analysis using cardiovascular disease and respiratory disease data from the National Health Insurance Service and the daily average PM10 and PM2.5 from the Korea Environment Corporation adjusting for time lag. Results: When the daily average PM10 concentration increased by 10 µg/m3 , the number of cardiovascular disease patients were 1.002 times higher (95% CI [Confidence Interval]; 1.000-1004) in Ganghwa County. As the daily average PM2.5 concentration increased by 10 µg/m3 , the number of cardiovascular disease patients were 1.012 times higher (95% CI; 1.008-1.016) in Ganghwa County. As the daily average PM10 concentration increased by 10 µg/m3 , the respiratory disease patients were 1.003 times (95% CI; 1.002-1.004) higher in Gyeyang and Michuhol Counties. As the PM2.5 concentration increased by 10 µg/m3 , the respiratory disease patients were 1.003 times higher (95% CI; 1.002-1.005) in Bupyeong County. Conclusions: In some parts of the Incheon area there was a correlation between the number of patients with respiratory and cardiovascular conditions and the concentration of PM10 and PM2.5.
RTK-GPS 기반의 무인차량 항법 알고리즘에 대한 연구
우훈제(HoonJe Woo),정승권(SeungKwon Jung),조봉근(BongGeun Cho),김정하(JungHa Kim) 한국자동차공학회 2009 한국자동차공학회 부문종합 학술대회 Vol.2009 No.4
This research proposes a navigation algorithm using RTK-GPS units and encoders. GPS systems sometimes lose their signals and receive inaccurate position data due to many factors, such as obstructions. This paper shows that GPS failure can be solved by using a DR (dead reckoning) navigation method with encoders and that position errors can be decreased by using RTK-GPS units. In addition to this method, new way point update algorithm and steering algorithm using RTK-GPS units will be introduced.