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Proceedings Paper

A resonant coding passive wireless SAW sensor array system
Author(s): Ping Li; Yumei Wen
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Paper Abstract

This paper introduces a novel coding resonant SAW passive wireless sensing system. A composite sensor structure with a resonator, a delay line and matching circuit is designed and the sensor system is constructed. It analyses sensor impulse response and response to sinusoidal burst signal input. The frequency of the response signal is related to sensing parameter. The delay time of the response signal is used to encode sensor elements. The duration of input signal has a significant effect to waveform and amplitude of response. An optimal duration of exciting burst signal can be selected. Because the composite structure can combine both sensitivity of high Q SAW resonator and massive coding ability of delay line, this coding resonant sensor can be used in long distance and large-scale distributed measurement as well.

Paper Details

Date Published: 16 May 2005
PDF: 9 pages
Proc. SPIE 5758, Smart Structures and Materials 2005: Smart Sensor Technology and Measurement Systems, (16 May 2005); doi: 10.1117/12.597962
Show Author Affiliations
Ping Li, Chongqing Univ. (China)
Yumei Wen, Chongqing Univ. (China)

Published in SPIE Proceedings Vol. 5758:
Smart Structures and Materials 2005: Smart Sensor Technology and Measurement Systems
Eric Udd; Daniele Inaudi, Editor(s)

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