Vibration Energy Harvester Based on Torsionally Oscillating Magnet
Abstract
:1. Introduction
2. System Design
2.1. Structure of the EVEH
2.2. Modeling of the EVEH
3. Experimental
3.1. Assembly Process
3.2. Measurement Setup
4. Results and Discussions
4.1. Fabrication Results of the EVEH Device
4.2. Open-Circuit Frequency Domain Response of the EVEH Device
4.3. Impedance Matching
4.4. Closed-Circuit Frequency-Domain Response of the EVEH Device
4.5. Acceleration Test
5. Conclusions
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Parameters | Designed | Measured | |
---|---|---|---|
Overall device | Size of device (L × W × H) (mm) | 10 × 10 × 10.7 | 10 × 10 × 10.8 |
Thickness of the wafer (mm) | 0.2 | 0.2 | |
Device T1 | Size of torsional spring (L × W) (mm) | 4 × 0.08 | 4 × 0.08 |
Size of spring–plate connector (L × W) (mm) | 0.4 × 0.8 | 0.4 × 0.8 | |
Functional area (mm2) * | 20.3 | 20.3 | |
Device T2 | Size of torsional spring unit (L × W) (mm) | 2.04 × 0.08 | 2.04 × 0.08 |
Number of torsional spring folds | 2 | 2 | |
Size of spring–plate connector (L × W) (mm) | 0.5 × 0.4 | 0.5 × 0.4 | |
Functional area (mm2) * | 20.6 | 20.6 | |
Magnet | Diameter (mm) | 4.00 | 4.04 |
Thickness (mm) | 3.00 | 3.04 | |
Coil | Numbers of turns | 40 | 40 |
Magnet–coil distance (mm) | 0.40 | 0.45 |
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Wang, X.; Li, J.; Zhou, C.; Tao, K.; Qiao, D.; Li, Y. Vibration Energy Harvester Based on Torsionally Oscillating Magnet. Micromachines 2021, 12, 1545. https://doi.org/10.3390/mi12121545
Wang X, Li J, Zhou C, Tao K, Qiao D, Li Y. Vibration Energy Harvester Based on Torsionally Oscillating Magnet. Micromachines. 2021; 12(12):1545. https://doi.org/10.3390/mi12121545
Chicago/Turabian StyleWang, Xinyi, Jiaxing Li, Chenyuan Zhou, Kai Tao, Dayong Qiao, and Yunjia Li. 2021. "Vibration Energy Harvester Based on Torsionally Oscillating Magnet" Micromachines 12, no. 12: 1545. https://doi.org/10.3390/mi12121545