Low-voltage coded excitation utilizing a miniaturized integrated ultrasound system employing piezoelectric 2-D arrays

Triger, S., Saillant, J.-F., Demore, C. E. M., Cochran, S. and Cumming, D. R. S. (2010) Low-voltage coded excitation utilizing a miniaturized integrated ultrasound system employing piezoelectric 2-D arrays. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 57(2), pp. 353-362. (doi:10.1109/TUFFC.2010.1415) (PMID:20178901)

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Abstract

We describe the development of an integrated, miniaturized ultrasound system designed for use with low-voltage piezoelectric transducer arrays. The technology targets low-frequency NDT and medium- to high-frequency sonar applications, at 1.2 MHz frequency. We have constructed a flexible, reconfigurable, low cost building block capable of 3-D beam forming. The tessellation of multiple building blocks permits formation of scalable 2-D macro-arrays of increased size and varying shape. This differs from conventional ultrasound solutions by integrating the entire system in a single module. No long RF cables are required to link the array elements to the electronics. The close coupling of the array and electronics assists in achieving adequate receive signal amplitudes with differential transmission voltages as low as +/- 3.3 V, although the system can be used at higher voltages. The system has been characterized by identifying flat-bottomed holes as small as 1 mm in diameter located at depths up to 190 mm in aluminum, and holes as small as 3 mm in diameter at a depth of 160 mm in cast iron. The results confirm the ability of the highly integrated system to obtain reflections from the targets despite the +/- 3.3 V excitation voltage by exploiting coding in low-voltage ultrasound

Item Type:Articles
Keywords:Arrays, design, low-cost, technologies, technology, transducer, transmission
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Cumming, Professor David and Cochran, Professor Alexander and Triger, Dr Simon
Authors: Triger, S., Saillant, J.-F., Demore, C. E. M., Cochran, S., and Cumming, D. R. S.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Publisher:Institute of Electrical and Electronics Engineers
ISSN:0885-3010
ISSN (Online):1525-8955
Published Online:18 February 2010

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
372601A scalable mosaic array for ultrasonic imagingDavid CummingEngineering & Physical Sciences Research Council (EPSRC)GR/T19803/01Electronic and Nanoscale Engineering