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- Title
A Tuning Fork Frequency Up-Conversion Energy Harvester.
- Authors
Wu, Qinghe; Gao, Shiqiao; Jin, Lei; Zhang, Xiyang; Yin, Zuozong; Wang, Caifeng
- Abstract
In this paper, a novel tuning fork structure for self-frequency up-conversion is proposed. The structure has an in-phase vibration mode and an anti-phase vibration mode. The in-phase vibration mode is used to sense the environment vibration, and the anti-phase vibration mode is used for energy conversion and power generation. The low-frequency energy collection and the high-frequency energy conversion can be achieved simultaneously. Theoretical and experimental results show that the tuning fork frequency up-conversion energy harvester has excellent performance. This structure provides the energy harvester with excellent output power in a low-frequency vibration environment. At the resonant frequency of 7.3 Hz under 0.7 g acceleration, the peak voltage is 41.8 V and the peak power is 8.74 mW. The tuning fork frequency up-conversion energy harvester causes the humidity sensor to work stably. The structure has the potential to power wireless sensor nodes or to be used as a small portable vibration storage device, especially suitable for the monitoring of the environment related to human movement.
- Subjects
TUNING forks; WIRELESS sensor nodes; ENERGY harvesting; HUMAN mechanics; ENERGY conversion; HUMAN ecology
- Publication
Sensors (14248220), 2021, Vol 21, Issue 21, p7285
- ISSN
1424-8220
- Publication type
Article
- DOI
10.3390/s21217285