A piezoelectric flow sensor for use as a wake-up switch for a wireless sensor network node

Yutaka Tomimatsu, Hidetoshi Takahashi, Kenta Kuwana, Takeshi Kobayashi, Kiyoshi Matsumoto, Isao Shimoyama, Toshihiro Itoh, Ryutaro Maeda

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

Power management is a fundamental issue in wireless sensor networks. In this paper, a piezoelectric flow sensor is proposed for use as a wake-up switch in a wireless sensor node to reduce power consumption. A cantilever with a Pb (Zr, Ti) O3 (PZT) thin film detects airflow changes surrounding the wireless sensor node. A prototype of the flow sensor is used to determine the relationship between the change in flow velocity and piezoelectric voltage of the cantilever. The fabricated sensor generates a piezoelectric voltage of several millivolts when the flow velocity changes at a rate of approximately 1 m/s.

Original languageEnglish
Pages (from-to)893-897
Number of pages5
JournalMechatronics
Volume23
Issue number7
DOIs
Publication statusPublished - 2013 Oct
Externally publishedYes

Keywords

  • Differential pressure sensor
  • Piezoelectric cantilever
  • Reduction of power consumption
  • Wake-up switch
  • Wireless sensor network

ASJC Scopus subject areas

  • Mechanical Engineering
  • Computer Science Applications
  • Electrical and Electronic Engineering

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