Passive 2.45 GHz TDMA based multi-sensor wireless temperature monitoring system: Results and design considerations

J. H. Kuypers, S. Tanaka, Masayoshi Esashi, D. A. Eisele, L. M. Reindl

研究成果: Conference contribution

20 被引用数 (Scopus)

抄録

This paper presents a TDMA (time division multiple access) based wireless temperature monitoring system using 2.45 GHz passive surface acoustic wave (SAW) delay line sensors. A three-step resolution refinement scheme using a combined delay and phase evaluation is proposed. Using a transmission power of 2 dBm (1.59 mW) a temperature accuracy of 0.19 K and 0.1 K (6σ), were achieved for an interrogation distance of 1.4 m, and 1.3 m, respectively. The sensor design is discussed using experimental results concerning the relationship between the SNR (signal to noise ratio) of the sensors and the accuracy in time delay or phase measurement. Also, the direct electron beam writing on chemically-reduced (black) LiNbO3 is described.

本文言語English
ホスト出版物のタイトル2006 IEEE International Ultrasonics Symposium, IUS
ページ1453-1458
ページ数6
DOI
出版ステータスPublished - 2006 12月 1

出版物シリーズ

名前Proceedings - IEEE Ultrasonics Symposium
1
ISSN(印刷版)1051-0117

ASJC Scopus subject areas

  • 音響学および超音波学

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