OBJECT DETECTION FOR WIRELESS ENERGY TRANSFER SYSTEMS
First Claim
1. A living object detector for a wireless energy transfer system, comprising:
- a sensor comprising a first conductor positioned adjacent to a first surface of a substrate;
a shield comprising a second conductor different from the first conductor, wherein at least a portion of the second conductor is positioned proximal to the first conductor and adjacent to the first surface of the substrate;
a ground reference comprising a third conductor spaced from the substrate and positioned on a side of the substrate opposite to the first surface; and
an electrical circuit coupled to the first, second and third conductors and configured so that during operation of the living object detector, the electrical circuit;
applies a first electrical potential to the first conductor and a second electrical potential to the second conductor, the first and second electrical potentials being approximately similar; and
maintains the third conductor at a ground reference electrical potential.
1 Assignment
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Accused Products
Abstract
The disclosure features living object detectors for a wireless energy transfer systems that include a sensor featuring a first conductor positioned adjacent to a first surface of a substrate, a shield featuring a second conductor different from the first conductor, where at least a portion of the second conductor is positioned proximal to the first conductor and adjacent to the first surface of the substrate, a ground reference featuring a third conductor spaced from the substrate and positioned on a side of the substrate opposite to the first surface, and an electrical circuit coupled to the first, second and third conductors and configured so that during operation of the living object detector, the electrical circuit applies a first electrical potential to the first conductor and a second electrical potential to the second conductor, the first and second electrical potentials being approximately similar.
12 Citations
20 Claims
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1. A living object detector for a wireless energy transfer system, comprising:
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a sensor comprising a first conductor positioned adjacent to a first surface of a substrate; a shield comprising a second conductor different from the first conductor, wherein at least a portion of the second conductor is positioned proximal to the first conductor and adjacent to the first surface of the substrate; a ground reference comprising a third conductor spaced from the substrate and positioned on a side of the substrate opposite to the first surface; and an electrical circuit coupled to the first, second and third conductors and configured so that during operation of the living object detector, the electrical circuit; applies a first electrical potential to the first conductor and a second electrical potential to the second conductor, the first and second electrical potentials being approximately similar; and maintains the third conductor at a ground reference electrical potential. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A wireless power transfer system comprising:
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a wireless power source configured to transfer power wirelessly to a wireless power receiver by generating a resonant oscillating magnetic field; and a living object detector comprising; a sensor comprising a first conductor positioned around a perimeter of the wireless power source; a shield comprising a second conductor different from the first conductor and positioned proximal to the first conductor; and an electrical circuit coupled to the first and second conductors and configured so that during operation of the living object detector, the electrical circuit applies a first electrical potential to the first conductor and a second electrical potential to the second conductor, the first and second electrical potentials being approximately similar. - View Dependent Claims (19, 20)
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Specification