A new method for fast identification of gases and gas mixtures after sensor power up

Author

Baumbach, Marc ; Kammerer, Thomas ; Sossong, Armin ; Schütze, Andreas

Author_Institution

Lab. for Meas. Technol., Saarland Univ., Saarbrucken, Germany

fYear

2004

fDate

24-27 Oct. 2004

Firstpage

1388

Abstract

We present a method for identifying and quantifying different gases and gas mixtures immediately after power up of a semiconductor gas sensor. The required information is obtained from the temporal behavior of the resistance reflecting the chemical interaction of the sensing layer with the gases. Due to the low thermal mass of the microsensors used in our experiments, identification and quantification of air, CO and H₂ is possible within a few seconds. In addition, the method also allows identification of components in a gas mixture based on calibration data gained from the individual gases. Experiments with different sensors have shown that this method of data extraction has a large potential for gas detection systems based on dynamic operation.

Keywords

air; carbon compounds; gas sensors; hydrogen; microsensors; semiconductor devices; CO; H₂; air; carbon monoxide; chemical interaction; dynamic operation; gas detection systems; gas identification; gas mixture identification; hydrogen; microsensors; semiconductor gas sensor; sensing layer; sensor power up; thermal mass; Calibration; Electrical resistance measurement; Gas detectors; Gases; Hardware; Microsensors; Power measurement; Sensor phenomena and characterization; Temperature sensors; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Sensors, 2004. Proceedings of IEEE

Print_ISBN

0-7803-8692-2

Type

conf

DOI

10.1109/ICSENS.2004.1426443

Filename

1426443