Security for wireless transfer of electrical power
First Claim
1. In a wireless electrical power transfer system including a source object operable to wirelessly transfer electrical power to a device object when the source and device objects are in tuned resonance, a method comprising:
- periodically adjusting tuning parameters associated with the source object, yielding a number of resonant frequency changes of the source object; and
communicating indicia of the frequency changes to authorized users associated with the device object, such that corresponding resonant frequency changes can be made in the device object to maintain tuned resonance with the source object.
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Accused Products
Abstract
A security mechanism is provided for wireless power transfer applications including resonant source and device objects, wherein tuned resonance between source and device objects is necessary for efficient power transfer. Tuning parameters associated with the source object are periodically adjusted so as to require corresponding changes in tuning parameter(s) of the device object to maintain tuned resonance. The tuning parameters are communicated to authorized users such that only authorized users capable of matching the changes made by the transmitter would be capable of receiving power. Unauthorized users that are unaware of the transmit tuning parameters will be rendered unable to maintain tuned resonance and thus unable to receive power.
213 Citations
10 Claims
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1. In a wireless electrical power transfer system including a source object operable to wirelessly transfer electrical power to a device object when the source and device objects are in tuned resonance, a method comprising:
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periodically adjusting tuning parameters associated with the source object, yielding a number of resonant frequency changes of the source object; and communicating indicia of the frequency changes to authorized users associated with the device object, such that corresponding resonant frequency changes can be made in the device object to maintain tuned resonance with the source object. - View Dependent Claims (2, 3, 4, 5)
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6. In a wireless electrical power transfer system including a source object operable to wirelessly transfer electrical power to a device object when the source and device objects are in tuned resonance, a method comprising:
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receiving indicia of resonant frequency changes of the source object; and periodically adjusting tuning parameters associated with the device object, yielding a number of resonant frequency changes of the device object corresponding to the frequency changes of the source object to maintain tuned resonance with the source object. - View Dependent Claims (7, 8)
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9. In a wireless electrical power transfer system including a source object operable to wirelessly transfer electrical power to a device object when the source and device objects are in tuned resonance, an apparatus comprising:
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a memory; and a processor coupled to the memory and configured to;
(i) periodically adjust tuning parameters associated with the source object, yielding a number of resonant frequency changes of the source object; and
(ii) communicate indicia of the frequency changes to authorized users associated with the device object, such that corresponding resonant frequency changes can be made in the device object to maintain tuned resonance with the source object.
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10. In a wireless electrical power transfer system including a source object operable to wirelessly transfer electrical power to a device object when the source and device objects are in tuned resonance, an apparatus comprising:
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a memory; and a processor coupled to the memory and configured to;
(i) receive indicia of resonant frequency changes of the source object; and
(ii) periodically adjust tuning parameters associated with the device object, yielding a number of resonant frequency changes of the device object corresponding to the frequency changes of the source object to maintain tuned resonance with the source object.
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Specification