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 language | English |
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Pages (from-to) | 893-897 |
Number of pages | 5 |
Journal | Mechatronics |
Volume | 23 |
Issue number | 7 |
DOIs | |
Publication status | Published - 2013 Oct |
Externally published | Yes |
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