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An electronic nose based on solid state sensor arrays for ...

Sensors and Actuators B 101 (2004) 39 46An electronic nose based on solid state sensor arrays forlow-cost indoor air quality monitoring applicationsS. Zampolli , I. Elmi, F. Ahmed1, M. Passini, Cardinali, S. Nicoletti, L. DoriCNR-IMM Sezione di Bologna, Via P. Gobetti 101, 40129 Bologna, ItalyReceived 9 October 2003; received in revised form 9 October 2003; accepted 11 February 2004 Available online 28 March 2004 AbstractThe occurrence of illnesses related with poor ventilation has driven an increasing attention towards indoor air quality monitoring. Inbuildings equipped with climate control systems, the diseases related to the air quality can be significantly reduced if smart interveningprocedures, aiming to control the concentration of pollutants in the indoor air, can be implemented in the heating, ventilation air conditioningunit. When reliable information about both the indoor and outdoor air quality is made available, the climate control system can providethe most appropriate amount of ventilation, ensuring safe and comfortable living this paper, a dedicated, miniaturized, low-cost electronic nose based on state -of-the-art metal oxide sensors and signal processingtechniques was developed.

low selectivity of the solid state gas sensors has been com- pensated by the combination of the response patterns, al- lowing the quantification of the single gas species.

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