Electronic measurement of fluid level using acoustic sensors

Author

Stuckman, Bruce E. ; Perttunen, Cary D.

Author_Institution

Dept. of Electr. Eng., Louisville Univ., KY, USA

fYear

1989

fDate

14-16 Aug 1989

Firstpage

697

Abstract

Many fluid tanks are, in effect, a sealed box which, if forced by an acoustic source will resonate at a fundamental frequency dependent upon the volume of the box as well as its shape and the thickness and stiffness of its walls. The introduction of fluid to the bottom of the tank will change the effective volume of the tank as seen by the acoustic source. This will change the acoustic properties of the tank by an amount which corresponds to the amount of fluid in the tank. Three methods of fluid volume measurement based on this principle are presented. Results of these three methods are compared. The advantages of these methods and applications are discussed

Keywords

acoustic resonators; acoustic variables measurement; frequency measurement; level measurement; volume measurement; acoustic sensors; box shape; box volume; electronic measurement; fluid volume measurement; fundamental frequency dependent; measurement of fluid level; resonant frequency measurement; sealed box; wall stiffness; wall thickness; Acoustic devices; Acoustic measurements; Acoustic sensors; Electric variables measurement; Impedance measurement; Microphones; Resonance; Resonant frequency; Temperature; Volume measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1989., Proceedings of the 32nd Midwest Symposium on

Conference_Location

Champaign, IL

Type

conf

DOI

10.1109/MWSCAS.1989.101950

Filename

101950