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: PDFPersonal VDE Members are entitled to a 10% discount on this title
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.