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Development of Electronic Nose for Qualitative and Quantitative Monitoring of Volatile Flammable Liquids

1
College of Biological Science and Engineering, Fuzhou University, Fuzhou 350108, China
2
State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350108, China
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Author to whom correspondence should be addressed.
Sensors 2020, 20(7), 1817; https://doi.org/10.3390/s20071817
Received: 12 February 2020 / Revised: 10 March 2020 / Accepted: 13 March 2020 / Published: 25 March 2020
(This article belongs to the Special Issue Machine Olfaction and Taste)
A real-time electric nose (E-nose) with a metal oxide sensor (MOS) array was developed to monitor 5 highly flammable liquids (ethanol, tetrahydrofuran, turpentine, lacquer thinner, and gasoline) in this work. We found that temperature had a significant impact on the test results and temperature control could efficiently improve the performance of our E-nose. The results of our qualitative analysis showed that principal component analysis (PCA) could not efficiently distinguish these samples compared to a back-propagation artificial neural network (BP-ANN) which had a 100% accuracy rate on the test samples. Quantitative analysis was performed by regression analysis and the average errors were 9.1%–18.4%. In addition, through anti-interference training, the E-nose could filter out the potential false alarm caused by mosquito repellent, perfume and hair jelly. View Full-Text
Keywords: electronic nose; flammable liquids; qualitative and quantitative analysis; back propagation artificial neural network electronic nose; flammable liquids; qualitative and quantitative analysis; back propagation artificial neural network
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MDPI and ACS Style

Wu, Z.; Wang, H.; Wang, X.; Zheng, H.; Chen, Z.; Meng, C. Development of Electronic Nose for Qualitative and Quantitative Monitoring of Volatile Flammable Liquids. Sensors 2020, 20, 1817.

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