Wavelet transform with a SAW convolver for sensor application

Author

Pohl, A. ; Ostermayer, G. ; Hausleitner, C. ; Seifert, F. ; Reindl, L.

Author_Institution

Appl. Electron. Lab., Univ. of Technol., Vienna, Austria

Volume

1

fYear

1995

fDate

7-10 Nov 1995

Firstpage

143

Abstract

To obtain the sensor information from an individually addressed SAW sensor, the use of coded ID-tag type SAW sensors is combined with the tool of wavelet transform, a type of correlative signal processing. The function of SAW sensors (ID-tag type) is observed as a scaling of time and shape respectively. The time scaling factor is equal to the mechanical extension of the substrate of a sensor for temperature, etc. This scaling factor is evaluated by calculating the wavelet transform. The fundamental concept, mathematical simulations, numerical estimations and finally, an overview of the implemented SAW sensor system using the wavelet transform processed within a SAW convolver are shown. Preliminary results are presented

Keywords

signal processing equipment; surface acoustic wave convolution; surface acoustic wave correlation; surface acoustic wave sensors; wavelet transforms; SAW convolver; coded ID-tag type SAW sensors; correlative signal processing; sensor application; time scaling factor; wavelet transform; Acoustic sensors; Convolvers; Laboratories; Mechanical sensors; Remote sensing; Sensor systems; Signal processing; Surface acoustic waves; Temperature sensors; Wavelet transforms;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1995. Proceedings., 1995 IEEE

Conference_Location

Seattle, WA

ISSN

1051-0117

Print_ISBN

0-7803-2940-6

Type

conf

DOI

10.1109/ULTSYM.1995.495557

Filename

495557