SAW multisensor for a PCMCIA environmental data card

Author

Stab, Helmut ; Plötner, Matthias ; Fischer, Wolf-Joachim

Author_Institution

Semicond. & Microsyst. Technol. Lab., Tech. Univ. Dresden, Germany

Volume

1

fYear

1998

fDate

1998

Firstpage

535

Abstract

Chemical sensors for gases like NO₂, NH₃, SO ₂, CO₂ sensitive in a wide range are necessary for monitoring of environmental data. SAW chemical sensors exploiting the mass loading effect offer an excellent opportunity to detect gases and vapors within the required concentration range. In this contribution a multisensor device is presented that consists of a PCMCIA card internationally standardized and a system of up to 4 SAW microsensors placed within an air sampling box on the card. This offers a low-cost solution for mobile environmental gas monitoring at highly loaded and exposed places. Single sensor device preparation, experimental setup for testing SAW gas sensors and an ASIC for device control as well as for signal processing has been developed. Results of NO₂ gas sensor measurements are presented

Keywords

air pollution measurement; application specific integrated circuits; computerised monitoring; gas sensors; intelligent sensors; memory cards; microsensors; sensor fusion; surface acoustic wave sensors; NO₂; PCMCIA environmental data card; SAW chemical sensors; SAW delay line; SAW microsensors; SAW multisensor; air sampling box; control logic; device control ASIC; dual sine-wave oscillator sensor; internationally standardized card; low-cost solution; mass loading effect; mobile environmental gas monitoring; signal processing; single sensor device preparation; Application specific integrated circuits; Chemical sensors; Gas detectors; Gases; Microsensors; Monitoring; Signal processing; Signal sampling; Surface acoustic waves; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1998. Proceedings., 1998 IEEE

Conference_Location

Sendai

ISSN

1051-0117

Print_ISBN

0-7803-4095-7

Type

conf

DOI

10.1109/ULTSYM.1998.762206

Filename

762206