response optimization of a chemical gas sensor array using temperature modulation
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2018
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Abstract
This paper consists of the design and implementation of a simple conditioning circuit to optimize the electronic nose performance, where a temperature modulation method was applied to the heating resistor to study the sensor’s response and confirm whether they are able to make the discrimination when exposed to different volatile organic compounds (VOC’s). This study was based on determining the efficiency of the gas sensors with the aim to perform an electronic nose, improving the sensitivity, selectivity and repeatability of the measuring system, selecting the type of modulation (e.g., pulse width modulation) for the analytes detection (i.e., Moscatel wine samples (2% of alcohol) and ethyl alcohol (70%)). The results demonstrated that by using temperature modulation technique to the heating resistors, it is possible to realize the discrimination of VOC’s in fast and easy way through a chemical sensors array. Therefore, a discrimination model based on principal component analysis (PCA) was implemented to each sensor, with data responses obtaining a variance of 94.5% and accuracy of 100%.
| Reference Key |
durn2018electronicsresponse
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|---|---|
| Authors | ;Cristhian Durán;Juan Benjumea;Jeniffer Carrillo |
| Journal | biology bulletin of the academy of sciences of the ussr |
| Year | 2018 |
| DOI |
10.3390/electronics7040054
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| URL | |
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