Wireless E-Nose Sensors to Detect Volatile Organic Gases through Multivariate Analysis

Rahman, Saifur; Alwadie, Abdullah S.; Irfan, Muhammed; Nawaz, Rabia; Raza, Mohsin; Javed, Ehtasham; Awais, Muhammad

Abstract

Gas sensors are critical components when adhering to health safety and environmental policies in various manufacturing industries, such as the petroleum and oil industry; scent and makeup production; food and beverage manufacturing; chemical engineering; pollution monitoring. In recent times, gas sensors have been introduced to medical diagnostics, bioprocesses, and plant disease diagnosis processes. There could be an adverse impact on human health due to the mixture of various gases (e.g., acetone (A), ethanol (E), propane (P)) that vent out from industrial areas. Therefore, it is important to accurately detect and differentiate such gases. Towards this goal, this paper presents a novel electronic nose (e-nose) detection method to classify various explosive gases. To detect explosive gases, metal oxide semiconductor (MOS) sensors are used as reliable tools to detect such volatile gases. The data received from MOS sensors are processed through a multivariate analysis technique to classify different categories of gases. Multivariate analysis was done using three variants—differential, relative, and fractional analyses—in principal components analysis (PCA). The MOS sensors also have three different designs: loading design, notch design, and Bi design. The proposed MOS sensor-based e-nose accurately detects and classifies three different gases, which indicates the reliability and practicality of the developed system. The developed system enables discrimination of these gases from the mixture. Based on the results from the proposed system, authorities can take preventive measures to deal with these gases to avoid their potential adverse impacts on employee health.

Citation

Rahman, S., Alwadie, A. S., Irfan, M., Nawaz, R., Raza, M., Javed, E., & Awais, M. (2020). Wireless E-Nose Sensors to Detect Volatile Organic Gases through Multivariate Analysis. Micromachines, 11(6), 597. https://doi.org/10.3390/mi11060597

• Journal Article Type: Article
• Acceptance Date: Jun 16, 2020
• Online Publication Date: Jun 18, 2020
• Publication Date: 2020-06
• Deposit Date: Jun 19, 2020
• Publicly Available Date: Jun 22, 2020
• Journal: Micromachines
• Electronic ISSN: 2072-666X
• Publisher: MDPI
• Peer Reviewed: Peer Reviewed
• Volume: 11
• Issue: 6
• Pages: 597
• DOI: https://doi.org/10.3390/mi11060597
• Keywords: Gas sensors; Principal components analysis; Multivariate analysis; Metal oxide semiconductor (MOS) sensors; Electronic; Detection; Electronic nose
• Public URL: https://hull-repository.worktribe.com/output/3524118
• Publisher URL: https://www.mdpi.com/2072-666X/11/6/597