Self-adaptive memory foam switches for piezoelectric synchronous harvesting circuits

Synchronous extraction circuits are effective in improving the performance of piezoelectric generators. In comparison with dedicated electronic circuits to correctly operate the switches of these circuits, synchronous mechanical switches provide an alternative solution with less electronic component...

Full description

Saved in:
Bibliographic Details
Published in:Smart materials and structures 2018-11, Vol.27 (11), p.117003
Main Authors: Liu, Weiqun, Qin, Gang, Zhu, Qiao, Hu, Guangdi
Format: Article
Language:English
Subjects:
piezoelectric generator
self-adaptive mechanical switches
synchronous switching circuits
viscoelasticity
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Synchronous extraction circuits are effective in improving the performance of piezoelectric generators. In comparison with dedicated electronic circuits to correctly operate the switches of these circuits, synchronous mechanical switches provide an alternative solution with less electronic components and lower voltage threshold. In this technique note, a self-adaptive mechanical switch design by utilization of the viscoelastic memory foam is proposed. It possesses favorable self-adaptive peak-detection ability in different amplitude or frequencies, which is believed to be a significant improvement to the previous researches. A synchronized switch harvesting on the inductor circuit using the proposed self-adaptive mechanical switches demonstrated a maximum power ratio of 292.3% in comparison with the standard circuit.
ISSN:0964-1726
1361-665X
DOI:10.1088/1361-665X/aae0aa