Title :
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
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;
Conference_Titel :
Ultrasonics Symposium (IUS), 2012 IEEE International
Conference_Location :
Dresden
Print_ISBN :
978-1-4673-4561-3
DOI :
10.1109/ULTSYM.2012.0269
