Share Email Print

Proceedings Paper

Piezoelectric capacitive power generator from vibration energy
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

A vibration-powered micro-power-generator has been presented in this paper, which has integrated two different energy harvesting mechanisms, e.g., Capacitive and Piezoelectric Mechanisms. The periodic vibration of the mass on movable electrode causes the variation of the capacitance, and the strain in the piezoelectric film. These two mechanisms can harvest the vibration energy and generate current in the output circuit. By using two different metals with large difference in working function as the two electrodes of the capacitor, our design, the combination of these two different scavenge mechanisms, can overcome the dependence of the traditional capacitive converter on the separate voltage source and improve the efficiency of power conversion. The volume of the designed device is less than 0.8 cm3. The simulated results reveal that this energy converter can provide an average output power of 82.21μW at an external vibration with a frequency of 111.4 Hz and amplitude of 0.2g.

Paper Details

Date Published: 4 January 2008
PDF: 12 pages
Proc. SPIE 6836, MEMS/MOEMS Technologies and Applications III, 68360Y (4 January 2008); doi: 10.1117/12.756131
Show Author Affiliations
Yangjian Zhang, Xiamen Univ. (China)
Lin Li, Xiamen Univ. (China)
Haisheng San, Xiamen Univ. (China)
Xuyuan Chen, Xiamen Univ. (China)
Vestfold Univ. College (Norway)

Published in SPIE Proceedings Vol. 6836:
MEMS/MOEMS Technologies and Applications III
Jung-Chih Chiao; Xuyuan Chen; Zhaoying Zhou; Xinxin Li, Editor(s)

© SPIE. Terms of Use
Back to Top