Please use this identifier to cite or link to this item: https://ir.sc.mahidol.ac.th/handle/123456789/642
Title: An optical artificial nose system for odor classifications based on LED arrays
Authors: Teerakiat Kerdcharoen
Keywords: Artificial nose;Beverage products;Chemical vapor;Clean glass substrates;Color light;Electronic nose systems;Iso-propanols;LED arrays;Light intensity;Odor classification;Olfactory sensing;Optical electronics;Organic mixtures;Organic thin films;Sensing layers;Sensing material;Thin film gas sensors
Issue Date: 2011
Publisher: 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011, ECTI-CON 2011
Citation: ฟิสิกส์
Series/Report no.: ;145-148
Abstract: Optical electronic nose (olfactory sensing) technologies have recently become a convenient technique to identify the quality of food and beverage products based on the odor classification. In this paper, we reported an optical-based electronic nose system consisting of thin-film sensing materials, array of light emitting diode (LED), photo-detector and pattern recognition program. The organic mixtures thin film gas sensor was prepared by spin coating of Zinc-2,9,16,23- tetra- tert-butyl-29H,31H-phthalocyanine (ZnTTBPc), Zinc-5,10,15,20-tetra-phenyl-21H,23H-porphyrin (ZnTPP) and manganese(III)-5,10, 15,20-tetra-phenyl-21H,23H-porphyrin chloride (MnTPPCl) onto a clean glass substrate. The electronic nose system was developed by using the low-cost LED array as a light source. Then the light intensity that is transmitted through the organic thin film during the experiment was detected by the color light to frequency converter device (photo-detector). The ability of this system was tested by using volatile organic compound (VOCs) vapors such as methanol, ethanol, and isopropanol. Principal component analysis (PCA) has been used as the pattern recognition for this electronic nose system. The result confirms that the sensing layer that composed of the three types of organic compounds described the groups of chemical vapors by using the array of LED.
Description: Scopus
URI: https://ir.sc.mahidol.ac.th/handle/123456789/642
ISSN: 978-145770424-6
Appears in Collections:Physics: International Proceedings

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