SYSTEM AND METHOD FOR MEASURING A FLUID FLOW RATE BY PROCESSING OF ACOUSTIC WAVES

摘要

This system for measuring a flow rate includes a receiver of bulk acoustic waves, a first emitter of bulk acoustic waves in the fluid, intended to be arranged upstream of the receiver in such a way as to emit acoustic waves to the receiver, a second emitter of bulk acoustic waves in the fluid, intended to be arranged downstream of the receiver in such a way as to emit acoustic waves to the receiver, and a signal processing device designed to determine a flow rate value according to at least one characteristic of an electrical signal supplied by the receiver. It further includes means for synchronizing the first and second emitters with each other in such a way as to generate destructive acoustic interferences between the acoustic waves that they emit before they are received by the receiver.

主权项

1. A system for measuring a flow rate of fluid by processing of acoustic waves, including:
a receiver of bulk acoustic waves after their propagation in the fluid, designed to supply an electrical signal using the acoustic waves received; a first emitter of bulk acoustic waves in the fluid, intended to be arranged upstream of the receiver with respect to the direction of flow of the fluid in such a way as to emit acoustic waves to the receiver; a second emitter of bulk acoustic waves in the fluid, different from the receiver and from the first emitter, intended to be arranged downstream of the receiver with respect to the direction of flow of the fluid in such a way as to emit acoustic waves to the receiver; means for synchronizing the first and second emitters with each other; and a signal processing device designed to determine a flow rate value according to at least one characteristic of the electrical signal supplied, wherein the means for synchronizing are designed in such a way as to generate destructive acoustic interferences between the acoustic waves emitted by the first emitter and those emitted by the second emitter before they are received by the receiver.