PL EN


Preferences help
enabled [disable] Abstract
Number of results
2011 | 120 | 4 | 593-597
Article title

Electronic Warning System Based on Surface Acoustic Wave Vibration Sensors

Content
Title variants
Languages of publication
EN
Abstracts
EN
In the paper feasibility analysis of the surface acoustic wave based electronic warning system was presented. As a transducer in the system the surface acoustic wave delay line was proposed. It is fabricated in standard single mask process as a pair of interdigital transducers placed on the top of piezoelectric crystal substrate. Transducer is a plate with rectangular cross-section and it converts all environmental vibration to electric signal. From electronic point of view it was considered as a two-port network. Necessary condition for proper sensor operation is that the input signal frequency from external generator should be close to central frequency of delay line. Principle of operation of the sensor is that the measured phase shift of high frequency signal has frequency equal resonant frequency of vibrating plate and its amplitude is proportional to vibration amplitude of transducer. The environmental vibrations are defined by amplitude of the output signal and the threat location is pointed by resonant frequency of excited transducer. The described above principles of sensor operation allow us designing electronic warning system consisting of many sensors with different resonant frequencies of transducers. Output signals from precisely located sensors contain all necessary information about the whole warning system. This information is easy to transmit and detect by simple electronic circuits based on phase detector and proper data acquisition system, for which necessary conditions are presented.
Keywords
EN
Contributors
author
  • Institute of Electronic and Control Systems, Technical University of Częstochowa, Armii Krajowej 17, 02-240 Częstochowa, Poland
author
  • Department of Civil Engineering, Military University of Technology, S. Kaliskiego 2, 00-908 Warsaw, Poland
author
  • Institute of Electronic and Control Systems, Technical University of Częstochowa, Armii Krajowej 17, 02-240 Częstochowa, Poland
References
  • 1. J. Filipiak, L. Solarz, G. Steczko, Acta Phys. Pol. A 116, 302 (2009)
  • 2. J. Filipiak, L. Solarz, K. Zubko, Mol. Quant. Acoust. 25, 89 (2004)
  • 3. J. Filipiak, Acceleration Sensors with Surface Acoustic Waves, Vol. 121, Częstochowa University Technology, Częstochowa 2006, p. 1
  • 4. J. Filipiak, L. Solarz, G. Steczko, Mol. Quant. Acoust. 28, 71 (2007)
  • 5. T. Hejczyk, M. Urbanczyk, Acta Phys. Pol. A 118, 1153 (2010)
  • 6. J. Filipiak, L. Solarz, G. Steczko, Mol. Quant. Acoust. 28, 81 (2007)
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv120n407kz
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.