ELECTROMECHANICAL ENERGY HARVESTING SYSTEM
First Claim
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1. A method of electromechanical energy harvesting comprising:
- sensing electrical current generated by relative movement of a coil and a magnetic flux source produced by movement of a cantilevered beam in response to ambient vibration energy;
determining a vibration characteristic of the ambient vibration energy; and
adjusting an effective flexible length of the cantilevered beam as a function of the vibration characteristic and the sensed electrical current.
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Abstract
A method of electromechanical energy harvesting includes sensing electrical current generated by relative movement of a coil and a magnetic flux source produced by movement of a cantilevered beam in response to ambient vibration energy, determining a vibration characteristic of the ambient vibration energy, and adjusting an effective flexible length of the cantilevered beam as a function of the vibration characteristic and the sensed electrical current.
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Citations
20 Claims
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1. A method of electromechanical energy harvesting comprising:
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sensing electrical current generated by relative movement of a coil and a magnetic flux source produced by movement of a cantilevered beam in response to ambient vibration energy; determining a vibration characteristic of the ambient vibration energy; and adjusting an effective flexible length of the cantilevered beam as a function of the vibration characteristic and the sensed electrical current. - View Dependent Claims (2, 3, 4)
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5. An electromechanical energy harvesting system comprising:
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a cantilevered beam; a coil; a magnetic flux source, wherein the coil and the magnetic flux source are configured to generate electrical current by relative movement therebetween in response to ambient vibration energy that produces vibration of the cantilevered beam; a processor configured to determine a vibration characteristic of the ambient vibration energy; and a mechanism to adjust an effective flexible length of the cantilevered beam as a function of the vibration characteristic and the electrical current. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12)
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13. An electromechanical energy harvesting system comprising:
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a cantilevered beam; a coil; a magnetic flux source, wherein the coil and the magnetic flux source are configured to generate electrical current by relative movement therebetween in response to ambient vibration energy that produces vibration of the cantilevered beam; a processor configured to determine a vibration characteristic of the ambient vibration energy as a function of the electrical current; and a mechanism to adjust an effective flexible length of the cantilevered beam as a function of the electrical current. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification