Low Power Energy Harvesting and Storage Techniques from Ambient Human Powered Energy Sources

Low Power Energy Harvesting and Storage Techniques from Ambient Human Powered Energy Sources

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This research studied forms of ambient energy sources such as waste mechanical (rotational) energy from hydraulic door closers, and fitness exercise bicycles, and its conversion and storage into usable electrical energy. In both of these examples of applications, hydraulic door closers and fitness exercise bicycles, human presence is required. A person has to open the door in order for the hydraulic door closer mechanism to function. Fitness exercise bicycles need somebody to cycle the pedals to generate electricity (while burning calories.) Also vibrations, body motions, and compressions from human interactions were studied using small piezoelectric fiber composites which are capable of recovering waste mechanical energy and converting it to useful electrical energy. Based on ambient energy sources, electrical energy conversion and storage circuits were designed and tested for low power electronic applications. These sources were characterized according to energy harvesting (scavenging) methods, and power and energy density. At the end of the study, the ambient energy sources were matched with possible electronic applications as a viable energy source.The mechanical to electrical energy conversion is usually managed by the energy harvesting circuits including conventional buck -boost converters, bridge rectifiers, and battery charging circuits. The energy harvesting circuit was designed, anbsp;...


Title:Low Power Energy Harvesting and Storage Techniques from Ambient Human Powered Energy Sources
Author:
Publisher:ProQuest - 2008
ISBN-13:

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