Human kinetic energy harvesting technology based on magnetic levitation structure

被引:1
|
作者
Fei F. [1 ]
Liu S.-Y. [1 ]
Wu C.-C. [1 ]
Yang D.-H. [1 ]
Zhou S.-L. [2 ]
机构
[1] Institute of Automation, Nanjing University of Aeronautics and Astronautics, Nanjing
[2] School of Astronautics, Northwestern Polytechnical University, Xi'an
关键词
Energy harvesting; Finite element simulation; Human kinetic energy; Magnetic levitation; Wearable device;
D O I
10.3785/j.issn.1008-973X.2019.11.020
中图分类号
学科分类号
摘要
An electromagnetic energy harvesting device based on magnetic levitation structure was designed, and the harvesting device can be installed on wrist, elbow and ankle to harvest human kinetic energy generated during human motions. Several kinds of energy harvesting technologies for vibration energy were summarized. The acceleration and the angular velocity of human joints in motion were measured with inertial sensors. The work principle of nonlinear energy harvesting of magnetic levitation structure was analyzed theoretically. The distribution of magnetic field and the variation of magnetic line of force around the structure during vibration were simulated with finite element tools. The resonant frequencies and the range of output voltage were verified by vibration test platform. When the user wears the device for testing, the output voltage and the power increase with the speed of movement. At the speed of 8 km/h, the maximum instantaneous power values captured by wrist, elbow and ankle were 0.60 mW, 0.30 mW and 0.58 mW, respectively. Experimental results show that the electromagnetic energy harvesting device based on magnetic levitation structure can effectively scavenge human kinetic energy and provide electric power for low power consumption devices such as wearable sensors. © 2019, Zhejiang University Press. All right reserved.
引用
收藏
页码:2215 / 2222
页数:7
相关论文
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