A capacitive vibration-to-electricity energy converter with integrated mechanical switches Export

@article{chiu2008, abstract = {Due to recent advances in low-power VLSI design technology, it has become feasible to power portable or remote electronic devices by scavenging the ambient energy. The design, fabrication and measurement of a capacitive vibration-to-electricity energy converter are presented in this paper. With a device area constraint of 1 cm2 and an auxiliary battery supply of 3.6 V, the device was designed to generate an output power of 31 \&\#181;W with an output saturation voltage of 40 V. An external mass of 4 g was needed to adjust the device resonance to match the input vibration of 2.25 m s[?]2 at 120 Hz. Mechanical contact switches were integrated onto the device to provide accurate charge-discharge energy conversion timing. The device was fabricated in SOI (silicon-on-insulator) wafers by deep silicon etching technology. Parasitic capacitance was minimized by partial back side substrate removal. Resonant frequencies of the fabricated device with and without the external mass agreed with the expected values. Without the external mass, the measured ac output power was 1.2 \&\#181;W with a load of 5 MO at 1870 Hz. Detailed circuit modeling and ac output power measurement of the devices with the external mass attached are in progress.}, author = {Chiu, Y. and Tseng, V. F. G.}, citeulike-article-id = {3378226}, citeulike-linkout-0 = {http://dx.doi.org/10.1088/0960-1317/18/10/104004}, doi = {10.1088/0960-1317/18/10/104004}, journal = {Journal of Micromechanics and Microengineering}, keywords = {capacitive, energy-harvesting}, number = {10}, pages = {104004+}, posted-at = {2008-10-06 01:05:09}, priority = {2}, title = {A capacitive vibration-to-electricity energy converter with integrated mechanical switches}, url = {http://dx.doi.org/10.1088/0960-1317/18/10/104004}, volume = {18}, year = {2008} }

TY - JOUR ID - chiu2008 L3 - citeulike-article-id:3378226 N2 - Due to recent advances in low-power VLSI design technology, it has become feasible to power portable or remote electronic devices by scavenging the ambient energy. The design, fabrication and measurement of a capacitive vibration-to-electricity energy converter are presented in this paper. With a device area constraint of 1 cm2 and an auxiliary battery supply of 3.6 V, the device was designed to generate an output power of 31 µW with an output saturation voltage of 40 V. An external mass of 4 g was needed to adjust the device resonance to match the input vibration of 2.25 m s[?]2 at 120 Hz. Mechanical contact switches were integrated onto the device to provide accurate charge-discharge energy conversion timing. The device was fabricated in SOI (silicon-on-insulator) wafers by deep silicon etching technology. Parasitic capacitance was minimized by partial back side substrate removal. Resonant frequencies of the fabricated device with and without the external mass agreed with the expected values. Without the external mass, the measured ac output power was 1.2 µW with a load of 5 MO at 1870 Hz. Detailed circuit modeling and ac output power measurement of the devices with the external mass attached are in progress. IS - 10 JF - Journal of Micromechanics and Microengineering TI - A capacitive vibration-to-electricity energy converter with integrated mechanical switches VL - 18 SP - 104004 KW - capacitive KW - energy-harvesting AU - Chiu, Y AU - Tseng, VFG PY - 2008/// UR - http://dx.doi.org/10.1088/0960-1317/18/10/104004 ER -