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정재업,이성필 경남대학교 신소재연구소 2003 신소재연구 Vol.15 No.2
안정적인 특성을 갖는 습도센서(TiO_92)-V_(2)O_(5), Cr-(2)O_(3))와 저온에서 동작 가능한 환원성 가스센서(SnO_(2)-Pt)를 제작하고, 상업용 온도센서를 사용하여 이들을 조합한 멀티센서를 제작하고, 각각의 센서가 가지는 장 ? 단점을 상호 보완하여 센서 제어 시스템을 제작하였다. 마이크로웨이브 오븐 내에서 해동조리의 자동제어를 위해 본 연구에서 제작한 센서들을 설치하여 그 특성을 평가한 결과, 소량의 돈육은 가스, 습도센서 모두 조리 상태를 판단하기 어려웠고, 450g의 돈육은 가스센서가 상대적으로 조리 상태를 잘 판단할 수가 있었고, 600g의 이상에서는 가스, 습도센서 모두 적용이 가능함을 알수 있었다. The humidity sensors(TiO₂-V₂2O_(5), Cr₂2O₃) with a stable characteristics and gas sensors(SnO₂-Pt) operating at room temperature have been fabricated and a multi-functional sensor system which has gas sensor, humidity sensor, temperature sensor and control circuit system has been applied to the microwave oven. For a suitable cooking state, the gas sensor was more applicable to 450g pork meat, and the gas sensor and humidity sensor both could be applicable to pork meat more than 600g.
최정광(Jungkwang Choi),윤문영(Moonyoung Yoon),정재업(Jaeeop Jung),부광석(Kwangseok Boo),김흥섭(Heungseob Kim) 대한기계학회 2012 대한기계학회 춘추학술대회 Vol.2012 No.11
Recently the automotive industry to predict the risk factors with the sensor to the driver in an accident be avoided by delivering systems that are now underway to study through a combination of various sensors and car, and that during the course of study as part of the study vehicle’s blind-spot detection system is actively underway. Intelligent sensors developed in this study of 15°~45° vehicle blind spot region is recognized by the infrared sensor. In order to increase the sensitivity of the sensor to receive infrared signals mixed with the carrier frequency and the center frequency of the signal consists of a mixed-frequency sensitivity and improved features. SILS environment was built according to international ISO standards based on specifications and configuration of presented BSDS. The environment of the road was built using PreScan and Matlab / simulink was configured using the control logic. In order to verify the applicability of the developed BSDS system, BSDS systems receive information of vehicle distance, steering angle, speed such as actual driving conditions. The applicability of the system presented safe conditions and accident situations by a visual representation and data.
SILS를 이용한 Lane Keeping Control 시스템의 성능평가
백승환(Seunghwan Baek),부광석(Kwangsuck Boo),김흥섭(Heungseob Kim),정재업(Jaeop Jung) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5
This study propose an Perception-Action Network (PAN) to estimate the vehicle pose parameters and control the vehicle motion for keeping the vehicle within given lane. The vehicle pose and the road curvature were calculated by geometrically fusing sensor data from camera image, tachometer and steering wheel encoder though the Perception Net, where not only the state variables, but also the corresponding uncertainties were propagated in forward and backward direction in such a way to satisfy the given constraint condition, maintain consistency, reduce the uncertainties, and guarantee robustness. The objective of the lane keeping control is to reduce a predicted tracking error of the vehicle, while the vehicle is traveling along the given lane. In this study, we calculated a required steering angle at the auction module of PAN. A series of experiments was conducted to evaluate the control performance, in which commercial software was utilized to quit unwanted safety problem.
최정광(Jungkwang Choi),부광석(Kwangsuck Boo),윤문영(Moonyoung Yoon),정재업(Jaeeop Jung),김흥섭(Heungseob Kim) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
In this study, the proposed BSD system consists of multiple infrared LEDs which are cheap and robust to weather conditions. It is installed a housing of outside rear-view mirror system to detect other vehicles and objects of the rear left and right-side in the range of 15 to 45 degrees. The layout like as horizontal and vertical angle of emitter/detector, sensing distance and angle of each channel is determined by many simulations and experiments. To maximize the detection distance of infrared LED, the current of an emitter is driving at the modulated frequency which is mixed the carrier frequency with a center frequency of each channel. The detector removes the carrier frequency from measured signal and distinguishes the channel with center frequency. The performance of BSD system is evaluated with SIL simulation and practical field test. The SILS system consists of PreScan and Matlab/Simulink. PreScan yields a realistic driving environments and road conditions. Vehicle model dynamics and collision warning is controlled by Matlab/Simulink. The control and warning logic is intensively evaluated through blind spot warning test and lane change warning test of ISO 17387 standards. Also the developed BSD system is installed on a housing of outside rear-view mirror of vehicle and showed good detection results under various weather conditions.