Biomechanické zdroje energie pro napájení mobilních senzorů

Abstract

The thesis deals with usability of renewable sources of energy particularly from human body motion for supply of mobile sensors in applications where connecting networks is impractical or impossible. Walking and back movements in particular, when the energy is transferred to the Energy Harvesting Backpack, was found the most suitable kind of motion for energy harvesting. The device consists of a linear line hanging on springs, a small generator for producing energy and a circuit for energy conversion. The weight, more precisely the contents of the backpack during suitable movement frequency reaches the resonance frequency and thus optimum exploitability of electric power from the system. It is further converted, stored and ready for supplying tiny electronic devices and mobile sensors. To set up appropriate specifications of components of the device, analysis of kinematics of human walking was done using Motion Capture technology at the beginning of work. All data were analysed and the results of the study were applied to the design and later experimental making of Energy Harvesting backpack. Experimental exploitability of the device was compared with the results of mathematical simulation in program MATLAB and with the results of other studies from all over the world dealing with this topic.