Energy Harvesting From Vibration With Alternate Scavenging Circuitry and Tapered Cantilever Beam by ncctrtp

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									NCCT                            EMBEDDED SYSTEMS
Promise for the Best Projects     IEEE PROJECTS 2010-11
   ENERGY HARVESTING FROM VIBRATION WITH
    ALTERNATE SCAVENGING CIRCUITRY AND
         TAPERED CANTILEVER BEAM

ABSTRACT
Piezoelectric transducers are increasingly being used to harvest
energy from environmental vibrations in order to either power
remote sensors or charge batteries that power the sensors. In this
paper, a new voltage compensation scheme for high-voltage-based
(> 100 V) energy harvesting is introduced, and its fundamental
concepts, as well as the operation details, are elaborated.
This scheme, when applied to the voltage inversion method
[synchronized switch harvesting on inductor (SSHI)], provides an
increase of over 14% in harvested power when compared to the
parallel inversion method (parallel SSHI) alone and more than 50%
in the case of series inversion method (series SSHI).
Second, tapered cantilever beams were shown to be more effective
in generating a uniform strain profile over rectangular and
trapezoidal beams if they are precisely shaped, resulting in a
significant increase in harvested power over available methods in
the literature from laboratory experimental tests.
In addition, a simplified method to design such a beam is
introduced. Finally, a field test of the proposed tapered beam is
conducted by using a dozer for earth-moving applications, and
experimental results are discussed.




          EMBEDDED SYSTEMS PROJECTS / IEEE PROJECTS
          MICROCONTROLLERS * VLSI * DSP * MATLAB
     NCCT, 28235816, 93801 02891, 98411 93224
 www.ncct.in , www.ieeeprojects.net , ncctchennai@gmail.com

								
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