A magnetic coupled piezoelectric energy harvester for ultra-low frequency vibrations

Yuanhua Li; Minglei Han; Miao Yang; Li Li

doi:10.1117/12.2652424

10 November 2022 A magnetic coupled piezoelectric energy harvester for ultra-low frequency vibrations

Yuanhua Li, Minglei Han, Miao Yang, Li Li

Proceedings Volume 12331, International Conference on Mechanisms and Robotics (ICMAR 2022); 1233114 (2022) https://doi.org/10.1117/12.2652424
Event: International Conference on Mechanisms and Robotics (ICMAR 2022), 2022, Zhuhai, China

Abstract

Harvesting human motion energy to power intelligent wearable devices is a research hotspot in the field of energy harvesting. Due to the characteristics of ultra-low frequency of the vibration generated by human motion, the conventional piezoelectric energy harvester cannot work efficiently. This paper proposes a magnetic coupled piezoelectric energy harvester which is composed of two piezoelectric cantilever beams, two endmost magnets, a center magnet, and a tube. The ultra-low frequency vibration of human motion is sensed by the center magnet in the tube and coupled to the piezoelectric cantilever beams by the repulsive force between the endmost magnet and the center magnet. The mathematical model of the harvester is established, and the influence of various parameters on energy harvesting efficiency is analyzed in detail. Through simulation analysis, the proposed harvester can effectively harvest ultra-low frequency vibration energy of human motion.

Citation Download Citation

Yuanhua Li, Minglei Han, Miao Yang, and Li Li "A magnetic coupled piezoelectric energy harvester for ultra-low frequency vibrations", Proc. SPIE 12331, International Conference on Mechanisms and Robotics (ICMAR 2022), 1233114 (10 November 2022); https://doi.org/10.1117/12.2652424

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available