WiFi electronic nose for indoor air monitoring

C. Wongchoosuk, C. Khunarak, M. Lutz, T. Kerdcharoen
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引用次数: 18

Abstract

Several indoor chemical contaminants such as CO and NO2 are highly toxic. Inhalation of CO or NO2 as low as ppm level may cause respiratory distress or failure. Therefore, detection of indoor air is very important in the industrial, medical, and environmental applications. In this paper, a new electronic nose (E-nose) architecture has been proposed for the real-time quantification and qualification of indoor air contaminations. The metal oxide TGS gas sensors were used as the sensing part. The principal component analysis (PCA) method and a set of mathematical model were employed in data analysis. By combining with the proposed mathematical model, this E-nose can estimate the amount of CO gas contaminations in air at ppm levels. Moreover, the PCA results can clearly show a classification between two different rooms.
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用于室内空气监测的WiFi电子鼻
一些室内化学污染物如CO和NO2是剧毒的。吸入低至ppm水平的CO或NO2可能导致呼吸窘迫或呼吸衰竭。因此,室内空气的检测在工业、医疗和环境应用中非常重要。本文提出了一种新的电子鼻结构,用于室内空气污染的实时量化和定性。传感部分采用金属氧化物TGS气体传感器。数据分析采用主成分分析(PCA)方法和一套数学模型。通过与所提出的数学模型相结合,这个电子鼻可以以ppm的水平估计空气中CO气体污染物的数量。此外,PCA结果可以清楚地显示两个不同房间之间的分类。
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