Charalampos Papadakos
ABSTRACT
Nowadays, numerous daily life applications related to wireless networks, sensors, low power electronics, biomedical applications etc. demand small amount of electrical power for their operation. These applications are rapidly increasing and bringing to the fore the need for small scale electrical power generation. To this end, strong efforts are being made to exploit ambient and man made energy sources such as electromagnetic radiation including sun, infrared and RF radiation, thermal sources, mechanical stress and strain, vibrations, biochemistry etc.
Acoustic signals seem to be such an alternative ambient energy source. Firstly, this work gives an overview of the proposed harvesting methods and systems derived from related patent applications during the past decade. Moreover, a first estimation of the available ambient acoustic power density is presented and then is compared to the ambient power density of the aforementioned energy sources.
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Index Terms
- Harvesting energy mostly from acoustic signals
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