Measuring and testing – Volume or rate of flow – By measuring vibrations or acoustic energy
Patent
1997-05-19
1999-12-21
Fuller, Benjamin R.
Measuring and testing
Volume or rate of flow
By measuring vibrations or acoustic energy
G01F 166
Patent
active
060033851
ABSTRACT:
The invention relates to ultrasound apparatus for measuring the flow speed of a fluid, the apparatus comprising first and second ultrasound transducers disposed at points that are spaced apart in the direction of fluid flow, a transmitter module, a receiver module, and switch means organized so that each of the first and second transducers operates alternately as a transmitter and as a receiver. The transmitter module includes at least one transmission signal generator whose output is permanently connected via two logic gates each followed by a respective resistive divider bridge to a respective first terminal of the first and second transducer, and in that the first and second switch means are interposed respectively between the first terminals of said first and second transducers and the receiver module.
REFERENCES:
patent: 5115670 (1992-05-01), Shen
patent: 5650572 (1997-07-01), Vontz
patent: 5796009 (1998-08-01), Delsing
patent: 5831175 (1998-11-01), Fletcher-Haynes
Siliconix incorporated, Analog Switches and Their Applications, pp. 3-18, fig. 2.26, 1976.
Bazin Alain
Beneteau Lionel
De Vanssay Robert
Simon Jean
Fuller Benjamin R.
Pojunas Leonard W.
Schlumberger Industries S.A.
Thompson Jewel V.
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