Wireless Passive Strain Sensor Based on Surface Acoustic Wave Devices

Sensors & Transducers

T. Nomura¹  K. Kawasaki¹  A. Saitoh¹ 

[1] Faculty of Engineering Shibaura Institute of Technology, Tokyo, Japan;

关键词: Surface acoustic waves;    SAW sensor;    Strain sensor;    Wireless sensing;    SAW delay line;   

DOI  :  

来源: DOAJ

【 摘 要 】

Surface acoustic wave (SAW) devices offer many attractive features for applications as chemical and physical sensors. In this paper, a novel SAW strain sensor that employs SAW delay lines has been designed. Two crossed delay lines were used to measure the two-dimensional strain. A wireless sensing system is also proposed for effective operation of the strain sensor. In addition, an electronic system for accurately measuring the phase characteristics of the signal wave from the passive strain sensor is proposed.

【 授权许可】

Unknown