A Survey on Gas Sensing Technology
Sensing technology has been widely investigated and utilized for gas detection. Due to the different applicability and inherent limitations of different gas sensing technologies, researchers have been working on different scenarios with enhanced gas sensor calibration. This paper reviews the descrip...
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doaj-6c9785a16e744b77a59564772e7828552020-11-24T21:43:50ZengMDPI AGSensors1424-82202012-07-011279635966510.3390/s120709635A Survey on Gas Sensing TechnologyHuansheng NingDaqiang ZhangHong LiuSha HuSitian ChengXiao LiuSensing technology has been widely investigated and utilized for gas detection. Due to the different applicability and inherent limitations of different gas sensing technologies, researchers have been working on different scenarios with enhanced gas sensor calibration. This paper reviews the descriptions, evaluation, comparison and recent developments in existing gas sensing technologies. A classification of sensing technologies is given, based on the variation of electrical and other properties. Detailed introduction to sensing methods based on electrical variation is discussed through further classification according to sensing materials, including metal oxide semiconductors, polymers, carbon nanotubes, and moisture absorbing materials. Methods based on other kinds of variations such as optical, calorimetric, acoustic and gas-chromatographic, are presented in a general way. Several suggestions related to future development are also discussed. Furthermore, this paper focuses on sensitivity and selectivity for performance indicators to compare different sensing technologies, analyzes the factors that influence these two indicators, and lists several corresponding improved approaches.http://www.mdpi.com/1424-8220/12/7/9635gas sensing methodssensing materialssensitivityselectivity |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Huansheng Ning Daqiang Zhang Hong Liu Sha Hu Sitian Cheng Xiao Liu |
spellingShingle |
Huansheng Ning Daqiang Zhang Hong Liu Sha Hu Sitian Cheng Xiao Liu A Survey on Gas Sensing Technology Sensors gas sensing methods sensing materials sensitivity selectivity |
author_facet |
Huansheng Ning Daqiang Zhang Hong Liu Sha Hu Sitian Cheng Xiao Liu |
author_sort |
Huansheng Ning |
title |
A Survey on Gas Sensing Technology |
title_short |
A Survey on Gas Sensing Technology |
title_full |
A Survey on Gas Sensing Technology |
title_fullStr |
A Survey on Gas Sensing Technology |
title_full_unstemmed |
A Survey on Gas Sensing Technology |
title_sort |
survey on gas sensing technology |
publisher |
MDPI AG |
series |
Sensors |
issn |
1424-8220 |
publishDate |
2012-07-01 |
description |
Sensing technology has been widely investigated and utilized for gas detection. Due to the different applicability and inherent limitations of different gas sensing technologies, researchers have been working on different scenarios with enhanced gas sensor calibration. This paper reviews the descriptions, evaluation, comparison and recent developments in existing gas sensing technologies. A classification of sensing technologies is given, based on the variation of electrical and other properties. Detailed introduction to sensing methods based on electrical variation is discussed through further classification according to sensing materials, including metal oxide semiconductors, polymers, carbon nanotubes, and moisture absorbing materials. Methods based on other kinds of variations such as optical, calorimetric, acoustic and gas-chromatographic, are presented in a general way. Several suggestions related to future development are also discussed. Furthermore, this paper focuses on sensitivity and selectivity for performance indicators to compare different sensing technologies, analyzes the factors that influence these two indicators, and lists several corresponding improved approaches. |
topic |
gas sensing methods sensing materials sensitivity selectivity |
url |
http://www.mdpi.com/1424-8220/12/7/9635 |
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