Analysis of Direct Discharge Circuit to Power Autonomous Wearable Devices using PVDF Piezoelectric Films

Conference: Intelec '05 - Telecommunications Conference - 27th International Telecommunication Energy Conference
09/18/2005 - 09/22/2005 at Berlin, Germany

Proceedings: Intelec '05 - Telecommunications Conference

Pages: 6Language: englishTyp: PDF

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Mateu, Loreto; Moll, Francesc (Universitat Politecnica de Catalunya, Dept. of Electronic Engineering, Spain)

Advances in low power design open the possibility to harvest energy from the environment to power electronic circuits. A piezoelectric element is capable of transform mechanical energy into electrical energy. Several methods are possible to efficiently store the generated electrical energy. Direct discharge method is here analyzed for a realistic piezoelectric current source waveform when the mechanical excitation is human walking activity. This analysis allows to predict how many steps are needed to provide a given amount of energy to an electronic device.