Acoustic sensor
First Claim
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1. An acoustic sensing device comprising:
- a first piezoelectric sensing portion having a first polarization axis and two conducting layers; and
a second piezoelectric sensing portion having a second polarization axis and two conducting layers, the second piezoelectric sensing portion positioned generally coplanar to the first piezoelectric sensing portion, one conducting layer of the first piezoelectric sensing portion in electrical contact with one conducting layer of the second piezoelectric sensing portion, the first and second polarization axes having a non-zero angle between them.
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Abstract
Disclosed are devices, systems, and methods for capturing acoustic data in an efficient manner. Some embodiments have piezoelectric sensing portions with polarization axes and conducting layers. In some embodiments, piezoelectric sensing portions can be positioned generally coplanar to each other and in partial electrical contact. In some embodiments, polarization axes of two piezoelectric sensing portions have a non-zero angle between them.
15 Citations
10 Claims
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1. An acoustic sensing device comprising:
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a first piezoelectric sensing portion having a first polarization axis and two conducting layers; and
a second piezoelectric sensing portion having a second polarization axis and two conducting layers, the second piezoelectric sensing portion positioned generally coplanar to the first piezoelectric sensing portion, one conducting layer of the first piezoelectric sensing portion in electrical contact with one conducting layer of the second piezoelectric sensing portion, the first and second polarization axes having a non-zero angle between them. - View Dependent Claims (2, 3, 4, 5, 7, 8, 9, 10)
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6. The device of claim, wherein the first and second piezoelectric sensing portions are inverted with respect to each other such that a top conducting layer of one piezoelectric sensing portion receives charge of the same polarity as the bottom conducting layer of the other piezoelectric sensing portion when the two piezoelectric sensing portions experience similarly-oriented strain.
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