Ultrasonic sensing

Details Ultrasonic sensing Ultrasonic sensing

G - Physics

01

N

349/39

G01N 29/02 (2006.01) G01N 15/00 (2006.01) G01N 29/24 (2006.01) G01N 29/28 (2006.01) G01N 29/32 (2006.01) G10K 11/00 (2006.01)

Patent

CA 1172347

Abstract of the Disclosure A pulse-echo device with an improved signal-to-noise ratio, in which sound-transmitting material adjacent to the device is coated with a sound-absorbing layer, the layer being sound-impedance matched to the material so that much of the spurious ultrasonic energy travelling in the material passes through the layer-material interface into the layer where it dissipates instead of remaining in the material and reflecting back to the device.

392202

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