Signal processing method and apparatus for flowmeters

Details Signal processing method and apparatus for flowmeters Signal processing method and apparatus for flowmeters

G - Physics

01

F

73/3, 354/31

G01F 1/32 (2006.01) G01F 15/06 (2006.01)

Patent

CA 2000700

Disclosed is a method of measuring the flow of a fluid in a pipeline, wherein the pipeline has noise, comprising the steps of: a) inserting a flow barrier in the pipeline, thereby forming a wake of vortices; b) creating an electronic signal for each vortex by means of a device which also produces electronic signals for the noise; c) transmitting the electronic signals of the vortices and noise to an electronic processor; d) converting the electronic signals of the vortices and noise vibrations from the time domain to the frequency domain; e) removing the electronic noise signals from the electronic vortex signals by means of cross-correlational computations, thereby computing the vortex frequency; and f) computing the flow from the computed vortex frequency.

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