Humidity compensation based on power-law response for MOS sensors to VOCs

被引：52

作者：

Yan, Meng ^{[1
]}

Wu, Yi ^{[1
]}

Hua, Zhongqiu ^{[1
]}

Lu, Ning ^{[1
]}

Sun, Wentao ^{[1
]}

Zhang, Jinbao ^{[1
]}

Fan, Shurui ^{[1
]}

机构：

[1] Hebei Univ Technol, Sch Elect & Informat Engn, Tianjin Key Lab Elect Mat & Devices, Tianjin 300401, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2021年 / 334卷

基金：

中国国家自然科学基金;

关键词：

MOS gas sensor; Humidity compensation; Pattern recognition; SEMICONDUCTOR GAS SENSORS; OXYGEN;

D O I：

10.1016/j.snb.2021.129601

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The compensation model for humidity is proposed for Metal oxide semiconductor (MOS) sensors to respond to volatile organic compounds (VOCs) vapor. There are four frequently-used sensors were investigated for the detection of three typical VOCs, namely, acetone, ethanol and methanol. In this study, water vapor was treated as a reactant involved in the response, then a model is proposed based on the power law response. As the resistance of sensor and humidity enter the model, the detected gas concentration will be output. The effect of model is well verified on the experimental system. Even the model was applied to electronic nose to improve the recognition results. It indicates that our method is of great value to system that needs to remove the interference of water vapor.

引用

页数：9

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