English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/4911
Share/Impact:
Statistics
logo share SHARE   Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Circuital modelling in transient regime of ultrasonic transceivers for imaging and detection including non-ideal behaviours

AuthorsRuiz Toledo, Abelardo ; Ramos, Antonio; San Emeterio, José Luis; Sanz Sánchez, Pedro Tomás
Issue DateDec-2007
CitationXIX Congreso Internacional de Acústica (ICA2007)
AbstractThe design of efficient ultrasonic transceivers systems for imaging and detection is having a great development at the present time. These systems have demonstrated a great utility in important tasks concerned with the medical and industrial diagnosis. In this paper we present a review and analysis of several Equivalent Circuital Models, proposed for us with the aim of simulating the responses of wideband ultrasonic transceivers, including their piezoelectric, electronic and ultrasonic sections. Modelling of important aspects present in practical configurations, used for medical and industrial diagnostic, are included: Non-linear effects in the emitting-receiving circuits; Non-ideal aspects on the loss and electrical distortions in the electronics; Frequency behaviour of the mechanical losses in the piezoceramic and the propagation medium. Some of the models proposed employ accurate estimated data for the piezoelectric transducers internal parameters. These data were obtained with a new estimation procedure here considered, based on Genetic Algorithms (GAs). PSPICE implementations of these models are presented for simulation in the temporal domain of Through-Transmission (T/T) and Pulse-Echo (P/E) configurations belonging to different imaging dispositions, which consider high-voltage regime and with the real circuital topologies used in the electronic transceivers. Comparison with the experimental data shows a clear improvement in the accuracy of these new models.
DescriptionPonencia presentada en el XIX Congreso Internacional de Acústica (ICA2007), Madrid, 2-7 Sep 2007.-- PACS: 43.38 Fx, 43.35 Zc, 43.35-c.
URIhttp://hdl.handle.net/10261/4911
ISSN0210-3680
Appears in Collections:(IA) Comunicaciones congresos
Files in This Item:
File Description SizeFormat 
ult15012.pdf117,79 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.