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Energy harvesting for wireless sensor operation and data transmission

  • US 20040078662A1
  • Filed: 03/05/2003
  • Published: 04/22/2004
  • Est. Priority Date: 03/07/2002
  • Status: Active Grant
First Claim
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1. A device for powering a load from an ambient source of energy, comprising:

  • an energy harvesting device for harvesting energy from the ambient source of energy, herein the rate energy is harvested from the ambient source of energy is below that required for directly powering the load;

    a storage device connected to said energy harvesting device, wherein said storage device receives electrical energy from said energy harvesting device and wherein said storage device is for storing said electrical energy; and

    a controller connected to said storage device for monitoring the amount of electrical energy stored in said storage device and for switchably connecting said storage device to the load when said stored energy exceeds a first threshold.

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