다양한 실내 환경에서의 CO₂ 농도 변화 분석 연구

Air quality of indoor space environment is affected by various pollutants like as particles and chemical stuffs. The indoor air pollution affects directly the human respiration organs to cause consequently unpleasant mental status. The CO₂ concentration level is one of the harmful components of air pollutants. Major factor to increase the CO₂ concentration level is the people's breath amount in indoor. The car exhaust gas diffused from the around road also has strong affect on CO₂ concentration. There are some other reasons to affect the CO₂ concentration change, such as, real-time change of the population movement, closeness to the indoor air flow inlet window and changes in road car traffic amount. A remote monitoring system to measure environmental indoor air pollution concerning on the CO₂ concentration was studied and installed realized set-up model. Zigbee network configuration was applied for this system and the CO₂ concentration data were collected through USN network. A software program was developed to assure systematic analysis and to display real-time data on web pages. For the experimental test various condition was set up, like as, window opening, stopping air condition operation and adjusting fan heater work, etc. The analysis result showed the relation of various environmental conditions to CO₂ concentration changes. The causes to increase CO₂ concentration were experimentally defined as windows closing, the stopping air condition system, fan heater operation. To keep the CO₂ concentration under the legally required ppm level in public access indoor space, the developed remote measurement svstem will be usefully applied.