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Automatic Parking System using Background Subtraction with CCTV Environment
Jungseok Cho,Jinrak Park,Untae Baek,Donghyun Hwang,Seibum Choi,Soohyun Kim,Kyungsoo Kim 제어로봇시스템학회 2016 제어로봇시스템학회 국제학술대회 논문집 Vol.2016 No.10
In this paper, a new automatic parking approach that uses a surveillance camera is suggested. Many parking lots have surveillance cameras. Vehicle position, attitude, and parking space detection methods using a based on CCTV environment are introduced. An entire auto parking system is realized using a small experimental vehicle. Existing auto parking systems are primarily ADAS (advanced driver assistance systems) that use extra sensors such as external cameras, ultrasonic sensors, and so on. The authors suggest an automatic parking system that does not impose an economic burden on drivers. Instead, drivers can use an automatic parking system based on CCTV environment, a central process computer, and a communication method between the computer and the driver’s car.
소형 펀치 크리프 실험변수 변환에 의한 크리프 특성 평가
김범준(Bumjoon Kim),배시연(Siyeon Bae),심언태(Untae Shim),임병수(Byeongsoo Lim) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Generally, the conventional creep specimen is tested under uniaxial stress whereas the small punch creep specimen is under multiaxial stress. The focus of this work is to investigate the relationship between the small punch creep test data and conventional creep test data by the analysis similar to the Monkman-Grant relationship using the experimentally acquired test data. Creep behavior of 9Cr-2W ferritic steel was studied at elevated temperature. Creep tests were performed using a small punch creep tester at constant loads and a conventional creep tester at constant stress. Time to fracture and the minimum displacement rate measured during the small punch tests are related in a similar manner to the corresponding conventional creep tests. From the relation derived similar to the Monkman-Grant relation, a correlation between the displacement rate in small punch creep test and the strain rate in conventional creep test is established and creep lives were evaluated by it.
단일벽 탄소 나노튜브(SWNT) 강화 구리 복합체의 제조 및 기계적 특성에 관한 연구
성병호(Byung-ho Sung),오세영(Seyoung Oh),최지훈(Jee-hoon Choi),심언태(Untae Sim),김범준(Bumjoon Kim),백승현(Seunghyun Baik),임병수(Byengsoo Lim),김철주(Chul-ju Kim) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Carbon nanotubes were coated by nickel to increase interfacial bonding on copper matrix materials. Mixing processes of ultrasonicating single-walled carbon nanotubes and copper powders were carried out in ethanol to obtain the uniform composition of specimens. The nanocomposite materials were fabricated by sintering processes, which consists of mixing carbon nanotubes with matrix powders followed by hot-pressing. The mechanical properties of single walled carbon nanotube reinforced copper matrix nanocomposite materials have been investigated by SP-creep test and wear test. The displacement rate of nickel-coated nanotube-copper composite was found to increase at 200℃ when compared with pure copper or other nanocomposite materials. The incorporation of carbon nanotubes and nickel-coated carbon nanotubes in the copper matrix composites decreased friction coefficients and increased times up to the onset point of scuffing, compared with those of pure copper specimens.