Journal
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
Volume 49, Issue 4, Pages 809-812Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/19.863929
Keywords
carbon dioxide; discriminant factorial analysis; electronic nose; odor recognition; principal component analysis; refrigerant gas; tin dioxide gas sensor
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In this work, an identification system based on an array of semiconductor tin dioxide gas sensors has been developed. This system has provided a good success rate in the discrimination of carbon dioxide, forane R134a or their mixtures without a sensor dedicated to carbon dioxide, After a characterization of the five-sensor array, prp-treatment was tested on the collected data to select the most representative parameters. Then the information contained in the resulting look-up table was analyzed with PCA, but no significant result was observed. Discriminant factorial analysis was then used and has shown a better separation of the different clusters. Next, unknown data were taken to validate the classification. The results show that a reliable system can be designed using nondedicated chemical semiconductor gas sensors.
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