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실내거주자 건강 관리를 위한 IoT기반 실내정원용 IAQ지수 개발
이정훈(Jeong-Hun Lee),안선민(Sun-Min An),곽민정(Min-Jung Kwak),김광진(Kwang Jin Kim),김호현(Ho-Hyun Kim) 한국환경보건학회 2018 한국환경보건학회지 Vol.44 No.5
Objectives: In this study, we started to develop an indoor garden integrated IoT solution based on IAQ (indoor air quality) and interconnection with an environmental database for smart management of indoor gardens. The purpose of this study was to develop and apply an integrated solution for customized air purification from an indoor garden through big data analysis using IoT technology. Methods: An IoT-based IAQ monitoring system was established in three households within a new apartment building. Based on real-time and long-term data collected, PM 2.5 , CO 2 , temperature, and humidity changes were compared to those of indoor garden applications and the analyzed results were indexed. Results As a result of the installation, all three households had no results exceeding the standard for indoor air pollution on average PM 2.5 and CO 2 indices. In the case of indoor garden installation, the IAQ index increased to the “Good” section after the installation, and readings in the “Bad” section shown before the installation disappeared. The comfort index also did not dip into the “Uncomfortable” section, where it had been preinstallation, and significantly lowered the average score from “Uncomfortable for sensitive groups” to “Good”. Overall, the IAQ composite index for the generation of installations decreased the “Good” interval, but “Bad” did not appear. Conclusions In this study on developing an integrated solution for IAQ based on IoT indoor gardens, big data was analyzed to determine IAQ and comfort indexes and an IAQ composite index. Through this process, it became understood that it is necessary to monitor IAQ based on IoT.
어린이 주요활동공간 중 소규모학원 내 유해물질 노출 평가
김호현(Ho-Hyun Kim),이정훈(Jeong-Hun Lee),안선민(Sun-Min An),이재영(Jae-Young Lee),최인석(In-Seak Choi),유시은(Si-Eun Yoo),정다영(Da-Young Jung),이철우(Chul-Woo Lee),박충희(Choong-Hee Park) 한국환경보건학회 2018 한국환경보건학회지 Vol.44 No.3
Objectives: This study was conducted to identify hazardous factors that reflect the characteristics of the academy and to provide basic data of environmental safety standard. Methods: Heavy metals, volatile organic compounds, formaldehyde, pesticides and phthalates were measured in 20 academies, which were supplementary, music, art and physical education institutes. Results: In case of heavy metals, the 12 locations were detected for lead (Pb) over the standard value, and 15 locations were exceeded for the total heavy metal. In six locations, the concentrations of volatile organic compounds were exceeded the standard value of 400 µg/m 3 , and two locations for formaldehyde were exceeded the standard value of 100 µg/m 3 . The most commonly detected agents in the air dust were chlorpyrifos and diazinon. The concentrations of DEHP, DINP, and DBP were detected and exceeded in several academies, The risk assessment results showed that HCHO as carcinogen had a safety level of 10-7 to 10-6, and DEHP and DINP as non-carcinogens had a safety level as assessed to be under than 0.1. Conclusions: Through the investigation of long-term environmental and health effects related laws on academies, indoor air quality management might be needed because there were cases of exceeding standard.