Abstract
A battery-free wireless monitoring system of vibration waveform for rotary motion is proposed. The sensor node is composed of a replicated-mass type piezoelectric generator, a 10 bit resolution ADC, a controller for quadrature phase shift keying (QPSK) data transmission and a cavity-backed slot antennas for the modulated back scattering communications. Consumption power of the sensor node is 60 microwatt by using the piezoelectric generator, where 30 m wireless reading range is achieved at 2.45 GHz band with a continuous 50 sps vibration waveform in the rotation range of 100 rpm to 600 rpm.
Original language | English |
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Article number | 6984961 |
Pages (from-to) | 174-177 |
Number of pages | 4 |
Journal | Proceedings of IEEE Sensors |
Volume | 2014-December |
Issue number | December |
DOIs | |
Publication status | Published - 2014 Dec 12 |
Event | 13th IEEE SENSORS Conference, SENSORS 2014 - Valencia, Spain Duration: 2014 Nov 2 → 2014 Nov 5 |
Keywords
- Battery-free wireless sensor
- Modulated back scattering communication
- Piezoelectric generator for rotary motion
ASJC Scopus subject areas
- Electrical and Electronic Engineering