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Subject: Re: Fluid level Sensor

Date: 09/23/00 at 9:17 AM
Posted by: John Dunn - Consultant
E-mail: ambertec@ieee.org
Message Posted:

In Reply to: Fluid level Sensor posted by help ,zee on 09/23/00 at 1:23 AM:

Hello, Zee.

It's known that an array of drinking goblets filled with different volumes of water will produce different tones when struck. Variability of acoustic resonance versus fluid level is a well known phenomenon. Given the complexities of the wave motions however, I think you'll need to determine resonant frequency versus fluid volume experimentally for each kind of vessel you a studying. If you get enough data points and plot them graphically, you may be able to fit an equation to match those points. That equation would be only descriptive, of course, and not analytic, but it would allow you to develop appropriate algorithms for each vessel.

Good luck.

John Dunn - President
Ambertec, Inc.

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