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Power extraction from ambient vibration

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Abstract
Autonomous devices such as sensors for personal area networks need a long battery lifetime in a small volume. The battery size can be reduced by incorporating micro-power generators based on ambient energy. This paper describes a new approach to the conversion of mechanical to electrical energy, based on charge transportation between two parallel capacitors. The polarization of the device is handled by an electret. A largesignal model was developed, allowing simulations of the behavior of any circuit based on this generator for any mechanical input signal. A small-signal model was derived in order to quantify the output power as a function of the design parameters. A layout was made based on a standard SOI-technology, available in a MPW. With this layout it is possible to generate 100 mW at 1200 Hz.
Keywords
electret, generator, MEMS, power

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Citation

Please use this url to cite or link to this publication:

Chicago
Sterken, Tom, Kris Baert, Robert Puers, and Gustaaf Borghs. 2001. “Power Extraction from Ambient Vibration.” In Proceedings of SAFE-ProRISC-SeSens. Dutch Technology Foundation STW.
APA
Sterken, T., Baert, K., Puers, R., & Borghs, G. (2001). Power extraction from ambient vibration. Proceedings of SAFE-ProRISC-SeSens. Presented at the SeSens 2001, Dutch Technology Foundation STW.
Vancouver
1.
Sterken T, Baert K, Puers R, Borghs G. Power extraction from ambient vibration. Proceedings of SAFE-ProRISC-SeSens. Dutch Technology Foundation STW; 2001.
MLA
Sterken, Tom, Kris Baert, Robert Puers, et al. “Power Extraction from Ambient Vibration.” Proceedings of SAFE-ProRISC-SeSens. Dutch Technology Foundation STW, 2001. Print.
@inproceedings{3141119,
  abstract     = {Autonomous devices such as sensors for personal area networks need a long battery lifetime in a small volume. The battery size can be reduced by incorporating micro-power generators based on ambient energy. This paper describes a new approach to the conversion of mechanical to electrical energy, based on charge transportation between two parallel capacitors. The polarization of the device is handled by an electret. A largesignal model was developed, allowing simulations of the behavior of any circuit based on this generator for any mechanical input signal. A small-signal model was derived in order to quantify the output power as a function of the design parameters. A layout was made based on a standard SOI-technology, available in a MPW. With this layout it is possible to generate 100 mW at 1200 Hz.},
  author       = {Sterken, Tom and Baert, Kris and Puers, Robert and Borghs, Gustaaf},
  booktitle    = {Proceedings of SAFE-ProRISC-SeSens},
  isbn         = {9789073461291},
  keyword      = {electret,generator,MEMS,power},
  language     = {eng},
  location     = {Veldhoven, the Netherlands},
  pages        = {4},
  publisher    = {Dutch Technology Foundation STW},
  title        = {Power extraction from ambient vibration},
  year         = {2001},
}