Ultrasonic detector

Details Ultrasonic detector Ultrasonic detector

G - Physics

01

N

349/31

G01N 29/02 (2006.01) A61M 5/36 (2006.01) G01N 29/032 (2006.01) G01N 29/036 (2006.01) G01N 29/22 (2006.01) G01N 29/24 (2006.01) G01N 29/28 (2006.01) G01N 29/34 (2006.01) G01N 29/46 (2006.01)

Patent

CA 1322400

A B S T R A C T The invention relates to an ultrasonic liquid detector comprising an ultrasonic sound generator and an ultrasonic sound receiver spacedly disposed from one an- other so as to receive a liquid carrying member there- between; and wherein each of said sound generator and sound receiver includes a substrate, a layer of conductive material on said substrate, said conductive layer having at least two regions electrically isolated from each other, a piezoelectric chip placed in electric contact over at least a portion of the first region of said conductive layer, and a conductive member extending between said piezoelectric chip and the second region of said conductive layer; whereby an electrical signal having a frequency of the resonant frequency of said piezoelectric chip on said sound generator can be applied between said first and second regions to cause ultrasonic sound to be generated and whereby the ultrasonic sound received by said piezo- electric chip on said sound receiver can be electrically detected by monitoring the electrical signal produced between the first and second regions of the conductive layer on said sound receiver.

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