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ENERGY HARVESTING TECHNIQUE TO SUPPORT REMOTE WIRELESS MEMS RF SENSORS

  • US 20080204005A1
  • Filed: 10/17/2006
  • Published: 08/28/2008
  • Est. Priority Date: 10/17/2006
  • Status: Active Grant
First Claim
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8. A Micro Electro-Mechanical Systems (MEMS) device, comprising:

  • a first harvesting system operable to store vibrational energy as electrical energy, the first harvesting system comprising;

    a high magnetic flux density field generated within a current induction conductor, wherein the high magnetic flux density field is generated between two same pole magnets;

    a mechanical mount wherein vibrational energy displaces the high magnetic flux density field relative to the current induction conductor to energize the current induction conductor;

    a second harvesting system operable to store vibrational energy as electrical energy, the second harvesting system comprising;

    piezoelectric transducer (PZT) materials operable to generate a electrical potential across the PZT materials when the PZT materials are mechanically stressed by the vibrational energy, wherein the mechanical mount is made from the PZT materials; and

    a storage device coupled to the current induction conductor and PZT materials wherein the storage device is operable to store electrical energy from the energized current induction conductor and the stressed PZT materials.

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