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Reader Architectures for Wireless Surface Acoustic Wave Sensors

Wireless surface acoustic wave (SAW) sensors have some unique features that make them promising for industrial metrology. Their decisive advantage lies in their purely passive operation and the wireless readout capability allowing the installation also at particularly inaccessible locations. Further...

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Detalles Bibliográficos
Autores principales: Lurz, Fabian, Ostertag, Thomas, Scheiner, Benedict, Weigel, Robert, Koelpin, Alexander
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6022187/
https://www.ncbi.nlm.nih.gov/pubmed/29843398
http://dx.doi.org/10.3390/s18061734
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author Lurz, Fabian
Ostertag, Thomas
Scheiner, Benedict
Weigel, Robert
Koelpin, Alexander
author_facet Lurz, Fabian
Ostertag, Thomas
Scheiner, Benedict
Weigel, Robert
Koelpin, Alexander
author_sort Lurz, Fabian
collection PubMed
description Wireless surface acoustic wave (SAW) sensors have some unique features that make them promising for industrial metrology. Their decisive advantage lies in their purely passive operation and the wireless readout capability allowing the installation also at particularly inaccessible locations. Furthermore, they are small, low-cost and rugged components on highly stable substrate materials and thus particularly suited for harsh environments. Nevertheless, a sensor itself does not carry out any measurement but always requires a suitable excitation and interrogation circuit: a reader. A variety of different architectures have been presented and investigated up to now. This review paper gives a comprehensive survey of the present state of reader architectures such as time domain sampling (TDS), frequency domain sampling (FDS) and hybrid concepts for both SAW resonators and reflective SAW delay line sensors. Furthermore, critical performance parameters such as measurement accuracy, dynamic range, update rate, and hardware costs of the state of the art in science and industry are presented, compared and discussed.
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spelling pubmed-60221872018-07-02 Reader Architectures for Wireless Surface Acoustic Wave Sensors Lurz, Fabian Ostertag, Thomas Scheiner, Benedict Weigel, Robert Koelpin, Alexander Sensors (Basel) Review Wireless surface acoustic wave (SAW) sensors have some unique features that make them promising for industrial metrology. Their decisive advantage lies in their purely passive operation and the wireless readout capability allowing the installation also at particularly inaccessible locations. Furthermore, they are small, low-cost and rugged components on highly stable substrate materials and thus particularly suited for harsh environments. Nevertheless, a sensor itself does not carry out any measurement but always requires a suitable excitation and interrogation circuit: a reader. A variety of different architectures have been presented and investigated up to now. This review paper gives a comprehensive survey of the present state of reader architectures such as time domain sampling (TDS), frequency domain sampling (FDS) and hybrid concepts for both SAW resonators and reflective SAW delay line sensors. Furthermore, critical performance parameters such as measurement accuracy, dynamic range, update rate, and hardware costs of the state of the art in science and industry are presented, compared and discussed. MDPI 2018-05-28 /pmc/articles/PMC6022187/ /pubmed/29843398 http://dx.doi.org/10.3390/s18061734 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Review
Lurz, Fabian
Ostertag, Thomas
Scheiner, Benedict
Weigel, Robert
Koelpin, Alexander
Reader Architectures for Wireless Surface Acoustic Wave Sensors
title Reader Architectures for Wireless Surface Acoustic Wave Sensors
title_full Reader Architectures for Wireless Surface Acoustic Wave Sensors
title_fullStr Reader Architectures for Wireless Surface Acoustic Wave Sensors
title_full_unstemmed Reader Architectures for Wireless Surface Acoustic Wave Sensors
title_short Reader Architectures for Wireless Surface Acoustic Wave Sensors
title_sort reader architectures for wireless surface acoustic wave sensors
topic Review
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6022187/
https://www.ncbi.nlm.nih.gov/pubmed/29843398
http://dx.doi.org/10.3390/s18061734
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