| 摘要 |
The present invention relates to a low-cost, disposable, flexure sensor with an active portion which includes first and second sensor elements formed from a piezoelectric polymer material. Each of the first and second sensor elements has a first surface and an opposed second surface. A first electrically conductive area is formed on the first surface of each sensor element and is connected to a second electrically conductive area on the second surface. In a preferred embodiment of the present invention, the electrical connection is formed by a plated hole which extends through the sensor element from the first surface to the second surface. Still further, each of the first and second sensor elements has a third electrically conductive area on the first surface, which electrically conductive area is electrically isolated from the first electrically conductive area. The active portion of the sensor includes at least one layer of an elastomeric substrate material positioned between the first and second sensor elements. Still further, a layer of hydrogel is affixed to one of the first and second sensor elements and a cover or protective layer is attached to the other of the first and second sensor elements. The hydrogel layer and the polyethylene layer are notched or otherwise configured so as to accommodate a connection tab on said sensor elements. A method for fabricating the acoustic sensor is also disclosed.
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