Fluid flow measuring apparatus

The University of Warwick (2023) Fluid flow measuring apparatus. .

Abstract

Apparatus 1 for measuring fluid flow speed and direction comprises first, second and third ultrasonic transducers 8, the second and third ultrasonic transducers arranged to receive an ultrasonic wave 13 from the first ultrasonic transducer, wherein the second and third ultrasonic transducers are spaced apart by a given distance. The apparatus further comprises a circuit 6 comprising a phase comparator 21 arranged to compare first and second signals 20 from the second and third ultrasonic transducers. In some embodiments a fourth ultrasonic transducer may be arranged to also receive the ultrasonic wave from the first ultrasonic transducer, wherein the fourth ultrasonic transducer is spaced apart from the second ultrasonic transducer by a given distance and is not collinear with the second and third ultrasonic transducers, and the circuit comprises a further phase comparator to compare the first signal and a third signal from the fourth ultrasonic transducer. The ultrasonic signals may be converted into square wave signals before phase comparison. Also claimed is apparatus comprising: a surface comprising first, second and third ultrasonic transducers arranged along the surface having respective transducer faces which are flush with the surface; a first reflector supported by the surface, arranged so as to reflect a pressure wave emitted by the first ultrasonic transducer towards the second ultrasonic transducer; and a second reflector supported by the surface arranged so as to reflect a pressure wave emitted by the first ultrasonic transducer towards the third ultrasonic transducer.

• Item Type: Patents
• Status: Published
• Glasgow Author(s) Enlighten ID: Feeney, Dr Andrew
• Authors: Dixon, S., Feeney, A., Kang, L., and Li, Z.
• College/School: College of Science and Engineering > School of Engineering > Systems Power and Energy

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