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Beyond Human Senses: Technologies, Strategies, Opportunities, and New Responsibilities Read chapter Read first chapter

2014 | OriginalPaper | Chapter

48. Acoustic Velocity Sensors with Programmable Directivity

Authors : Massimo Piotto, Federico Butti, Paolo Bruschi

Published in: Sensors

Publisher: Springer New York

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Abstract

A directional acoustical sensor with programmable axis of maximum sensitivity is described. The sensor is based on a combination of two orthogonal acoustical particle velocity (APV) sensors, integrated on the same chip. The APV sensors are based on a thermal transduction principle. Differently from former implementations, the proposed devices are fully CMOS compatible. Rotation of the sensitivity axis is obtained by combining the output of the two APV sensors properly weighted with programmable coefficients. This operation is performed using a microcontroller ADuC842 (Analog Devices) equipped with 12 bit, 400 kS ADCs.

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Literature
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De Bree HE, Leussink P, Korthorst T, Jansen H, Lammerink TSJ, Elwenspoek M (1996) The μ-flown: a novel device for measuring acoustic flows. Sens Actuators A 54:552–557CrossRef
2.
Yntema DR, Van Honschoten JW, De Bree HE, Wiegerink RJ, Elwenspoek M (2006) A three dimensional microflown. In: Proceedings of IEEE MEMS 2006, Istanbul, 22–26 Jan 2006, pp 654–657
3.
Bruschi P, Butti F, Piotto M (2011) CMOS compatible acoustic particle velocity sensors. In: Proceedings of IEEE sensors 2011, Limerick, 28–31 Oct 2011, pp 1405–1408
Metadata
Title
Acoustic Velocity Sensors with Programmable Directivity
Authors
Massimo Piotto
Federico Butti
Paolo Bruschi
Copyright Year
2014
Publisher
Springer New York
Book
Sensors

Print ISBN: 978-1-4614-3859-5

Electronic ISBN: 978-1-4614-3860-1

Copyright Year: 2014

DOI
https://doi.org/10.1007/978-1-4614-3860-1_48