Evaluation of response time in ball surface-acoustic-wave hydrogen sensor using digital quadrature detector

Takuji Abe, Naoya Iwata, Toshihiro Tsuji, Tsuyoshi Mihara, Shingo Akao, Kazuhiro Noguchi, Noritaka Nakaso, Dongyoun Sim, Yusuke Ebi, Takeshi Fukiura, Hidekazu Tanaka, Kazushi Yamanaka

研究成果: Article査読

22 被引用数 (Scopus)

抄録

Hydrogen leak detection sensors must have high sensitivity and a short response time of 1 s or less. A ball surface-acousticwave (SAW) hydrogen sensor has a high sensitivity and can detect hydrogen in a very wide concentration range of lOppm to 100%. Moreover, a fast response can be expected because of the very thin sensitive film used. In this study, we developed a digital quadrature detector (DQD) to measure responses of less than 1 s, and measure phases in 1 ms intervals with excellent sensitivity. We evaluated the response time of the ball SAW hydrogen sensor where the signal was averaged 256 times in 0.256 s using the DQD. As a result, the response time was found to be Is or less for 3.0 vol % hydrogen gas in nitrogen.

本文言語English
ページ(範囲)4726-4728
ページ数3
ジャーナルJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
46
7 B
DOI
出版ステータスPublished - 2007 7 26

ASJC Scopus subject areas

  • 工学(全般)
  • 物理学および天文学(全般)

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