Comparative Study of Piezoelectric Transducers for Power Scavengers

Ambient energy scanvengers have the potentials to replace batteries, which have limited lifetime and large volume, and to realize the miniaturized devices. Piezoelectric materials have been testified as a promising candidate for converting vibration energy into electric energy. The conversion efficiency depends on the types of piezoelectric materials and structural designs. PZT, PVDF and MFC cantilevers were studied to compare the performance and applicability under various operational conditions. The resonant frequency of cantilever was calculated and measured to optimize the dimension of cantilevers because the maximum output power density can be achieved when it matches the exciting frequency. The safety factor or maximum operating acceleration (S) is considered to predict the maximum acceleration on the cantilevers without fracture. Results showed that PVDF-and MFC-based devices are around five orders of magnitude higher between PZT-based one. The relationship between the output power density and the dimension of power generator was extensively examined. The output power densities of cantilever-based prototypes fabricated using three piezoelectric materials were obtained through a simple resistive load and the PZT-based device showed the highest value. All three types of devices were demonstrated sufficient power density required to operate microsensor systems in this experimental range.

[1]  ScienceDirect.  Mechanical systems and signal processing , 1987 .

[2]  Ieee Circuits,et al.  IEEE Transactions on Very Large Scale Integration (VLSI) Systems , 2018, IEEE Transactions on Very Large Scale Integration (VLSI) Systems.

[3]  Daniel J. Inman,et al.  An investigation into the performance of macro-fiber composites for sensing and structural vibration applications , 2004 .

[4]  IEEE Pervasive Computing: Wearable Computing - Works in Progress , 2002, IEEE Distributed Syst. Online.

[5]  Robert Cole,et al.  Computer Communications , 1982, Springer New York.

[6]  Jan M. Rabaey,et al.  Improving power output for vibration-based energy scavengers , 2005, IEEE Pervasive Computing.

[7]  Jean-Luc Schanen,et al.  IEEE Transactions on Power Electronics CALL FOR PAPERS Special Issue on Integrated Power Electronics , 2005 .

[8]  Horn-Sen Tzou,et al.  SENSORS AND ACTUATORS , 2001 .

[9]  Neil M. White,et al.  Design and fabrication of a new vibration-based electromechanical power generator , 2001 .

[10]  R. H. Volin,et al.  The Shock and Vibration Digest , 1974 .

[11]  D. Inman,et al.  A Review of Power Harvesting from Vibration using Piezoelectric Materials , 2004 .

[12]  Anantha Chandrakasan,et al.  Vibration-to-electric energy conversion , 2001, IEEE Trans. Very Large Scale Integr. Syst..

[13]  M. Strasser,et al.  Micromachined CMOS thermoelectric generators as on-chip power supply , 2004 .

[14]  Heath Hofmann,et al.  Adaptive piezoelectric energy harvesting circuit for wireless remote power supply , 2002 .

[15]  M. Noori,et al.  Smart Materials and Structures: A Review , 1996 .

[16]  Jan M. Rabaey,et al.  A study of low level vibrations as a power source for wireless sensor nodes , 2003, Comput. Commun..

[17]  G. G. Stokes.  "J." , 1890, The New Yale Book of Quotations.

[18]  S. Beeby,et al.  A novel thick-film piezoelectric micro-generator , 2001 .

[19]  K. Young,et al.  AMERICAN SOCIETY OF MECHANICAL ENGINEERS. , 1880, Science.