Model based development of a commercial, acoustic fingerprint sensor

Author

Schmitt, Rainer M. ; Zeichman, Joseph ; Casanova, Andrea C. ; Delong, Devin

Author_Institution

Sonavation Inc., Palm Beach Gardens, FL, USA

fYear

2012

fDate

7-10 Oct. 2012

Firstpage

1075

Lastpage

1085

Abstract

FEM modeling is used to design and support implementation of an acoustic fingerprint (FP) sensor utilizing 1-3 piezo-composite as a sensor matrix. Providing a selected PZT/Polymer system simulation revealed the geometry for the successful implementation of the sensor with a resolution of 500 DPI and a contrast of >80% differentiation between ridges and valley. Simulation predicted performance within single-digit percentage deviation between measurement and model. Several experiments demonstrate the supporting role of modeling in sensor manufacturing capable of defining tolerances for manufacturing processes.

Keywords

acoustic transducers; fingerprint identification; matrix algebra; piezoelectric transducers; 1-3 piezo-composite; DPI; FEM modeling; FP sensor; PZT-polymer system simulation; acoustic fingerprint sensor; geometry; manufacturing processes; model based development; sensor matrix; single-digit percentage deviation; Acoustics; Damping; Electrodes; Finite element analysis; Load modeling; Polymers;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium (IUS), 2012 IEEE International

Conference_Location

Dresden

ISSN

1948-5719

Print_ISBN

978-1-4673-4561-3

Type

conf

DOI

10.1109/ULTSYM.2012.0269

Filename

6562410