Adaptive filtering for a vortex flowmeter

Details Adaptive filtering for a vortex flowmeter Adaptive filtering for a vortex flowmeter

1995-05-09

1996-11-19

Chilcot, Richard

Measuring and testing

Volume or rate of flow

By measuring vibrations or acoustic energy

7386118, G01F 132

Patent

active

055764975

ABSTRACT:
A method and apparatus for increasing the resolution and accuracy of flow measurements made by vortex flowmeters through the use of an adaptive filter. A vortex sensor signal is conditioned by a bandpass filter whose corner frequencies are dynamically altered as a function of the measured frequency of the vortex sensor signal. When the change in frequency is relatively small, the filters' corner frequencies are set to track the frequency signal in accordance with a specified bandwidth thereby improving the signal-to-noise ratio. For large frequency changes, a new frequency signal is searched for thereby avoiding tracking erroneous noise signals. Furthermore, compensation for additional or missed vortex pulses is made thereby generating a more accurate vortex frequency measurement.

REFERENCES:
patent: 3978416 (1976-08-01), Sutphin
patent: 4158818 (1979-06-01), Lerner
patent: 4204171 (1980-05-01), Sutphin
patent: 4545258 (1985-10-01), Coursolle
patent: 4809558 (1989-03-01), Watson et al.
patent: 4934194 (1990-06-01), Itoh et al.
patent: 4966040 (1990-10-01), Ohmae
patent: 5309771 (1994-05-01), Lew et al.
patent: 5429001 (1995-07-01), Kleven
patent: 5435188 (1995-07-01), Lew et al.

Affiliated with

Also associated with

Rating

Adaptive filtering for a vortex flowmeter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Adaptive filtering for a vortex flowmeter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive filtering for a vortex flowmeter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-542387