Acoustic scintillation liquid flow measurement

Details Acoustic scintillation liquid flow measurement Acoustic scintillation liquid flow measurement

G - Physics

01

F

349/25

G01F 1/704 (2006.01) G01P 5/18 (2006.01)

Patent

CA 1254649

ACOUSTIC SCINTILLATION LIQUID FLOW MEASUREMENT Abstract of the Disclosure A system and method are disclosed for acoustic scintillation liquid flow measurement. Measurement is carried out by acoustic beams transmitted perpendicular to the direction the component of liquid flow to be measured, with both phase and amplitude measurements being made to enable generation of accurate speed of flow indications, which are indicative of liquid flow through a broad area being monitored as opposed to a single point therein. In one realization of this invention, a pair of projectors are mounted on one side of the flow area, such as a channel to be monitored, and a pair of receivers are mounted on the other side of the flow area with pulsed acoustic signals from each of the projectors being transmitted in separate parallel paths through the liquid, such as water, to the receivers. At the receivers, electrical signals indicative of received acoustic signals in each path are complex demodulated after which the demodulated outputs are shaped, converted and then coupled to a microcomputed for evaluation and, responsive thereto, providing the indication of liquid flow speed.

510015

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