The purpose of this study is to analyze the effect of temperature and humidity on the measured Particulate Matter (PM) concentrations recorded by PMS5003T, a low-cost light scattering type measuring tool. A regression analysis was performed on the ratio of PM concentrations measured by the light scattering method and the beta-ray absorption method according to temperature and humidity in an outdoor environment. As the temperature decreased, the PM concentration ratio increased, and this tendency intensified below 0oC. As the humidity increased, the PM concentration ratio increased, but the effect was less than the temperature effect. The coefficients of determination for temperature and humidity were R2 = 0.325 and 0.003, respectively, and the effects of temperature and humidity on the measured values w ere formulated and compensated for. As a result of the compensation, R2, relative precision, accuracy and RMSE improved from 0.927 to 0.958, from 91.183% to 96.651%, from 31.383% to 74.058%, and from 13.517 μg/m³ to 6.690 μg/m³, respectively. Finally, results from this study indicate that the reliability of the low-cost light scattering type PM sensor can be improved by applying the temperature and humidity compensation method.

1. 서 론
2. 연구방법
    2.1 연구대상 및 기간
    2.2 실외측정 방법
3. 결 과
    3.1 실외 측정 결과
4. 고 찰
5. 결 론

• 안영준(한국과학기술연구원 센서시스템연구센터, 고려대학교 전기전자공학과) | Young Jun An (Sensor System Research Center, Korea Institute of Science and Technology (KIST) , Department of Electrical Engineering, Korea University)
• 문병혁(한국과학기술연구원 센서시스템연구센터, 고려대학교 전기전자공학과) | Byunghyuck Moon (Sensor System Research Center, Korea Institute of Science and Technology (KIST) , Department of Electrical Engineering, Korea University)
• 김용수(한국과학기술연구원 센서시스템연구센터, 서울시립대학교 전기전자컴퓨터공학과) | Yong Soo Kim (Sensor System Research Center, Korea Institute of Science and Technology (KIST),Department of Electrical and Computer Engineering, University of Seoul)
• 정영곤(한국과학기술연구원 센서시스템연구센터,고려대학교 마이크로/나노시스템협동과정) | Yeongkon Jeong (Sensor System Research Center, Korea Institute of Science and Technology (KIST),Department of Micro/Nano Systems, Korea University)
• 이승복(한국과학기술연구원 기후·환경연구소 환경복지연구단) | Seung-Bok Lee (Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology (KIST))
• 변영태(한국과학기술연구원 센서시스템연구센터) | Young Tae Byun (Sensor System Research Center, Korea Institute of Science and Technology (KIST))
• 전영민(한국과학기술연구원 센서시스템연구센터) | Young Min Jhon (Sensor System Research Center, Korea Institute of Science and Technology (KIST)) Corresponding author