Design and application of a non-contact ultrasound velocity measurement system with air instability compensation

Research output: Contribution to journalArticlepeer-review

Abstract

This article describes the design and application of a non-contact ultrasound air instability compensation transducer. The spatial impulse response approach was used to simulate the reflected energy from the reference in the path of the ultrasound from the non-contact transducer to compensate for the error provided by the instability of the air media during measurements. Based on simulation, a model was suggested for the design of a reference for the 1.0 MHz 12.5 mm diameter non-contact ultrasound transducer. Simulation results highly correlated with the measured data to provide R2 values greater than 0.99. The improved stability of the thickness and ultrasound velocity measurements of polystyrene and cheddar cheese was demonstrated with a constructed air instability compensation transducer. Results indicate that the non-contact air instability compensation ultrasound technique has excellent potential for non-destructive, rapid, and precise quality measurement and monitoring in varying environmental conditions, as in a food manufacturing plant or a process industry.

Original languageEnglish (US)
Pages (from-to)901-909
Number of pages9
JournalTransactions of the American Society of Agricultural Engineers
Volume46
Issue number3
StatePublished - May 1 2003
Externally publishedYes

Keywords

  • Air instability compensation
  • Computer simulation
  • Non-contact ultrasound
  • Spatial impulse response

ASJC Scopus subject areas

  • Agricultural and Biological Sciences (miscellaneous)

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