Research with energy harvesting knapsack

This paper addresses the challenges posed by battery power in portable electronic devices and aims to design a highpower energy capture backpack that can convert human motion energy into electricity and charge electronic devices. Through the establishment of gait characteristic model and dynamic model, the backpack design is optimized, the power generation capacity is increased, and the volume and weight are reduced. The experiment verified the charging efficiency of the circuit, and obtained the feasibility of the circuit and the measured charging efficiency of the circuit is $\mathbf{66.04 \%}$. It also tested the physiological effects of the backpack on the human body and found that carrying an energy-harvesting backpack increased metabolic costs and muscle activity, especially at low speeds.