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이혁기(Hyuck-kee Lee),연규봉(Kyu-bong Yeon),정기윤(Ki-yun Jeong),양인범(In-beom Yang),김병우(Byeong-woo Kim) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In a Vehicle, Safety is the most important factor for drivers. It is well known that tire pressure lower than normal reduces the safety of the vehicle. In a consideration of active safety, tire pressure monitoring system is absolutely required. Tire pressure monitoring using in-tire pressure sensors with an RF data link has proven to be the best approach to measuring tire pressure over the widest range of operating conditions. In this paper, we describe the parameters of TPMS, the characteristics of a tire and temperature compensation. These are the main factors to design the decision logic. We will show the guidelines for TPMS logic development considering environment variables and vehicle conditions.
이혁기(Hyuck-kee Lee),신성근(Seonggeun Shin),황윤형(Yunhyoung Hwang) 한국자동차공학회 2014 한국자동차공학회 부문종합 학술대회 Vol.2014 No.5
Autonomous Emergency Braking(AEB) for pedestrians is a technology that automatically applies braking force to a vehicle when forward detection sensors determine that a collision with a pedestrian is imminent, thereby assisting in avoiding the collision altogether, or if it is unavoidable, reducing the impact speed of the crash and subsequently the risk of fatal/severe injury to pedestrians. AEBS for Commercial Vehicle has been regulated in Oct. 2013 and AEBS for passenger vehicle is tested in Euro NCAP except functioning to pedestrians. AEB-pedestrian will be tested in Euro NCAP from 2016. AEBS is essential to vehicle safety including pedestrian. Recently, Electronic Parts and Systems related to vehicle safety should be developed according to ISO 26262. ISO 26262 is a functional safety standard derived from IEC 61508. This papers deals with the process and specific performing method of Concept phase analysis for AEBS. Item definition and H&R are developed according to the published functional safety standard.
근거리 센서 기반 도심형 운전자 지원 시스템 성능평가 환경 구축
이혁기(Hyuck-kee Lee),황윤형(Yunhyoung Hwang),기상렬(Sangyoul Ki) 한국자동차공학회 2012 한국자동차공학회 부문종합 학술대회 Vol.2012 No.5
Driver Assistance System is widely under development to satisfy each safety issues including adaptive cruise control(ACC), forward vehicle collision warning system(FVCWS), pre-crash safety(PCS) and lane change aid. Low speed driver assistance system using low-cost sensors is more adopted due to its cost. This paper deals with low speed driver assistance system using short range sensors and a camera. A camera is used for lane deprature warning and forward collision warning. Blind spot detection uses two ultrasonic sensors and IR-based short range sensors are used for pre-crash safety and forward collision warning. Here, we developed an evaluation environment for low speed driver assistance system. That enables us to perform simulation and vehicle test synchronized in laboratory. Sensor simulation models are constructed in virtual driving environment and driver assistance systems logic is prepared to perform integrated simulation using composed sensor model. Real sensors can be tested in real target connected to simulation.
이혁기(Hyuck-kee Lee),황윤형(Yunhyoung Hwang),양인범(Inbeom Yang) 한국자동차공학회 2012 한국자동차공학회 부문종합 학술대회 Vol.2012 No.5
Recently, many researches were performed to enhance fuel efficiency using GPS and ITS information. Green Drive means Driver Assistance System that use Map and Traffic information to drive a car in efficient and safe state. It consists of driver coaching system, energy management system and green routing. This paper deals with the evaluation environment of Green Drive System in simulated virtual driving environment. Main purpose of that is to quantitatively test green drive components in a point of view of fuel efficiency. We developed a DHIL(Driver Hardware-In-the-Loop) simulator that can be used in virtual driving and a HILS system to operate the DHIL simulator. Several scenarios of green driving are also described briefly.
이혁기(Hyuck-kee Lee),한종연(Jongyeon Han),연규봉(Kyubong Yeon) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
Current headlighting and road lighting are only partly effective in reducing the risk of driving at night. Various forms of night vision enhancement systems, using a variety of sensing technologies, are being developed to further reduce this risk. Two major sensing technologies are receiving particular development interest and are both currently available on new vehicles: far infrared(FIR) systems and near infrared systems(NIR). Recently, a New regulation is prepared to protect pedestrians in EU. This will make a vehicle more equipped to enhance forward vision and pedestrian detection. This paper deals with performance evaluation method of night vision system in Lab. and proving ground. Here, we used automated in-lab test facility, which consists of a dynamometer, a rail system and a driving simulator. That can perform repetitive and accurate tests. In proving ground, we tested night vision system’s detection capability.
HVI를 위한 Head-Up Display 시스템 연구
이혁기(Hyuck Kee Lee),양인범(In Beom Yang) 대한인간공학회 2009 대한인간공학회 학술대회논문집 Vol.2009 No.11
Today, Intelligent vehicles requires new visual display system to provide much information of nomadic devices and ADAS. Too many convenient systems produce much information to be processed but it can cause driver distraction. Head-up Display is a good device to display visual information safely. This paper describes the development of Head-up Display and its application technology to vehicles and deals with problems of the developed Head-up Display and remaining technology issues.
Head-Up Display 장치의 자동차 적용을 위한 연구
양인범,이혁기,김병우,Yang, In-Beom,Lee, Hyuck-Kee,Kim, Beong-Woo 한국자동차공학회 2007 한국 자동차공학회논문집 Vol.15 No.4
Head-Up Display system makes it possible for the driver to be informed of important vehicle data such as vehicle speed, engine RPM or navigation data without taking the driver's eyes off the road. Long focal length optics, LCD with bright illumination, image generator and vehicle interface controllers are key parts of head-up display system. All these parts have been designed, developed and applied to the test vehicle. Virtual images are located about 2m ahead of the driver's eye by projecting it onto the windshield just below the driver's line of sight. Developed head-up display system shows satisfactory results for future commercialization.