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신민재(Shin Min-Jae),양송재(Yang Song-Jae),박준석(Park Jun-Seok) 한국건축친환경설비학회 2011 한국건축친환경설비학회 학술발표대회 논문집 Vol.2011 No.3
In this study, improvement of indoor air quality in newly built apartments was analyzed from results of the previous surveys. And also the changes of the occupants' evaluation on indoor air quality was statistically analyzed through field survey. Finally, the corelation analysis between the indoor air quality and occupants' satisfaction. The questionnaire survey of occupants who Live in the newly built apartment buildings was conducted during 25 June to 19 July, 2010. The questionnaire was consisted of three parts; one is [or information on family; the second is for satisfaction on IAQ in their apartments; the last is for clearance for the law. About 928 occupants were participated in the questionnaire survey. From this study, it was found that levels of indoor air pollutants are below the guidelines, and also that about 30% occupants are satisfied with their indoor air. Comparing with the satisfaction of the law released before, it is on an upward trend.
탐색 알고리즘을 이용한 초음파 센서 기반 무선조종 RC카
신민재(Min-Jae Shin),임수민(Su-Min Lim),김동회(Dong-Hoi Kim) 한국정보기술학회 2020 한국정보기술학회논문지 Vol.18 No.3
Because the existing RC-controlled gyro sensor was directly controlled and there was no device to prevent collision, it would frequently collide when encountering obstacles. To solve this problem, the proposed RC car was equipped with two ultrasonic sensors on the front and new data values were obtained from the output from the gyro sensor and the ultrasonic sensor. When the output value is received by the ultrasonic sensor, a search algorithm is used to find and change the output value by the gyro sensor. Based on these values, Arduino was used to control the RC cars motor using new 4-bit data. This search algorithm improves stability by reducing collisions with obstacles. Through the several experiments such as the number of obstacles detected, the number of collisions, and the speed to the target point, we found that the proposed RC car model improves more stability than existing RC car models.