Comparative Analysis of Wrist-worn Energy Harvesting Architectures

16th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications

物理学;能源学

Rantz, R.^1 ; Xue, T.^1 ; Zhang, Q.^2 ; Gu, L.^2 ; Yang, K.^2 ; Roundy, S.^1

University of Utah, 1495 E 100 S (1550 MEK), Salt Lake City

UT

84112, United States^1

Analog Devices Inc., 804 Woburn St, Wilmington

MA

01887, United States^2

关键词: Comparative analysis;    Device modeling;    Dynamical structure;    Linear spring;    Prototype devices;    Simulation-based analysis;    Transduction mechanism;    Vibration energy harvesting;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/773/1/012076/pdf
DOI  :  10.1088/1742-6596/773/1/012076

来源: IOP

【 摘 要 】

This paper reports the simulation-based analysis of six dynamical structures with respect to their wrist-worn vibration energy harvesting capability. This work approaches the problem of maximizing energy harvesting potential at the wrist by considering multiple mechanical substructures independently of any specific transduction mechanism; rotational and linear motion-based architectures are considered. The addition of a linear spring element to the structures has the potential to improve power output. The analysis concludes that a sprung rotational harvester architecture outperforms a sprung linear architecture by 58% when real walking data is used as input to the simulations. The power output of a rotational prototype device was measured for various inputs and compared against simulation in order to corroborate the rotational device model.