In this short paper, we report a design of an energy harvesting backpack with a mechanical motion rectifier (MMR). Also, we report the experiment studies conducted on two male subjects who carry two types of energy harvesting backpacks, including the MMR-based and traditional energy harvesting backpack, while walking on a treadmill at 3 and 3.5 mph. The harvested power of the backpacks shunted with different resistors are reported with each walking speed to demonstrate the high efficiency of the MMR-based backpack harvester. During the tests, the MMR-based backpack harvest generated more power regardless of walking speeds and resistor values. Finally, a maximum average power of 4.8 Watts and instant power of 12.8 Watts were obtained by one subject, carrying the MMR-based backpack harvester and walking at 3.5 mph.
Yue Yuan, Mingyi Liu, Wei-Che Tai, and Lei Zuo, "Design and experimental studies of an energy harvesting backpack with mechanical motion rectification," Proc. SPIE 10168, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2017, 1016825 (Presented at SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring: March 29, 2017; Published: 12 April 2017); https://doi.org/10.1117/12.2260256.
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