Temperature profile investigation of SnO2 sensors for CO detection enhancement

被引：24

作者：

Burresi, A ^{[1
]}

Fort, A ^{[1
]}

Rocchi, S ^{[1
]}

Santos, MBS ^{[1
]}

Ulivieri, N ^{[1
]}

Vignoli, V ^{[1
]}

机构：

[1] Univ Siena, Dept Informat Engn, I-53100 Siena, Italy

来源：

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 2005年 / 54卷 / 01期

关键词：

carbon monoxide; electronic nose; ethanol; temperature modulation; tin oxide sensors;

D O I：

10.1109/TIM.2004.834048

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

SnO2 sensors are widely used for the detection of air contaminants such as CO. Nevertheless, their application encounters several problems, mainly the effect of interfering gases. The low selectivity is, in fact, a well-known problem of these sensors. Moreover, the high operating temperature of metal oxide sensors implies, in general, high power consumption. In this paper, we present a study aimed at the selection of an appropriate measurement technique for detection of CO for indoor applications (lower threshold 100 ppm), in the presence of high concentrations of ethanol (up to 1000 ppm), by using only one sensor. Moreover, the paper aims at developing portable CO detectors that are very small, low power, and could be battery operated.

引用

页码：79 / 86

页数：8

共 21 条

[1] Optimized temperature-pulse sequences for the enhancement of chemically specific response patterns from micro-hotplate gas sensors [J].