ENERGY HARVESTING TECHNIQUE TO SUPPORT REMOTE WIRELESS MEMS RF SENSORS
First Claim
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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Accused Products
Abstract
A method of harvesting vibrational energy is provided. This method involves generating a high magnetic flux density field within a current induction conductor such as an induction coil. The high magnetic flux density field is generated between two same pole magnets. The high magnetic flux density field may be displaced relative to the current induction conductor with vibrational energy. These displacements then cause the current induction conductor to be energized. The two same pole magnets are mounted between piezoelectric transducer (PZT) materials. These PZT materials generate an electric potential when the PZT materials are subject to the mechanical stresses of the vibrational energy. The electrical energy translated from the vibrational energy through both the energized current induction conductor and stress PZT materials may then be used to power a power circuitry or be stored for later use.
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Citations
22 Claims
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8. A Micro Electro-Mechanical Systems (MEMS) device, comprising:
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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. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A power harvesting device operable to translate vibrational energy into electrical energy, the power harvesting device comprising:
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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; and 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 circuitry energized by the energized current induction conductor and mechanically stressed PZT materials. - View Dependent Claims (1, 2, 3, 4, 5, 6, 7, 16, 17, 18, 19, 20, 21, 22)
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22-1. The power harvesting device of claim 15, wherein the mechanical mount comprises a tuning fork design.
Specification