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|Title: ||Sviluppo di sistemi sensoriali per il monitoraggio della qualità dell'aria e per la sicurezza in ambienti esterni e confinati: i casi del CH4, CO2, CO|
|Authors: ||D'Amico, Arnaldo|
Di Natale, Corrado
|Keywords: ||sensore infrarosso|
|Issue Date: ||29-Jul-2009 |
|Abstract: ||Due to the dramatic growth in industrial development and population, the natural atmospheric environment has become polluted. In fact, when the hazards of environmental pollution that can cause severe injury within a short time period is considered, the precise monitoring of pollutant emissions becomes rather important. Conventional instruments for monitoring the environment are not so popular because they are bulky, time consuming, and expensive. As a consequence, compact, robust, and inexpensive solid-state gas sensors are required as an effective alternative for environmental monitoring.
In this work we present two systems suitable for the detection of volatile compounds: an electro-optical infrared sensor and a capacitive chemical sensor array. The working principle of the electro-optical system is based on the absorption of infrared energy by gas molecules at their characteristic absorption bands; the absorbance is proportional to the concentration according to Lambert-Beer law....|
|Appears in Collections:||Tesi di dottorato in ingegneria|
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|Tesi Dottorato XIX Corso Ingegneria dei Microsistemi di Alexandro Catini.pdf||7353Kb||Adobe PDF||View/Open|
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