Showing papers on "Energy harvesting published in 1998"
19 Oct 1998
TL;DR: This paper examines three different devices that can be built into a shoe and used for generating electrical power "parasitically" while walking, two of which are piezoelectric in nature and one is a shoe-mounted rotary magnetic generator.
Abstract: As the power requirements for microelectronics continue decreasing, environmental energy sources can begin to replace batteries in certain wearable subsystems. In this spirit, this paper examines three different devices that can be built into a shoe, (where excess energy is readily harvested) and used for generating electrical power "parasitically" while walking. Two of these are piezoelectric in nature: a unimorph strip made from piezoceramic composite material and a stave made from a multilayer laminate of PVDF foil. The third is a shoe-mounted rotary magnetic generator. Test results are given for these systems, their relative merits and compromises are discussed, and suggestions are proposed for improvements and potential applications in wearable systems. As a self-powered application example, a system had been built around the piezoelectric shoes that periodically broadcasts a digital RFID as the bearer walks.
795 citations
01 Jan 1998
TL;DR: The Ocean Power Technologies' (OPT) team is developing a new power generating technology that focuses on the generation of electrical power from the flow energy of water in streams, currents, or pipes.
Abstract: : Ocean Power Technologies' (OPT) team is developing a new power generating technology that focuses on the generation of electrical power from the flow energy of water in streams, currents, or pipes. The generating systems that are developed will be eel-like structures made from piezoelectric polymers. The program will develop an energy harvesting unit to supply electrical power that enables small military devices to have an indefinite life when operating in a site with a flowing water energy resource.
1 citations