APPARATUS AND METHOD FOR NON-COMPLIANT OBJECT DETECTION
First Claim
1. An apparatus for wirelessly transferring power, the apparatus comprising:
- a wireless power transmitter configured to wirelessly transmit power at a power level sufficient to power or charge a chargeable device positioned within a charging region; and
a controller circuit operationally coupled to the wireless power transmitter and configured to;
determine a first power difference Δ
1(PTU) between a first power measurement P1(PTU) of the power level provided by the wireless power transmitter at a first sample time T1 and a second power measurement P2(PTU) of the power level provided by the wireless power transmitter at a second sample time T2,determine a second power difference Δ
2(PTU) between the second power measurement P2(PTU) and a third power measurement P3(PTU)of the power level provided by the wireless power transmitter at a third sample time T3,determine a transmitter power difference Δ
T between the first power difference Δ
1(PTU) and the second power difference Δ
2(PTU), and determine an absence or a presence of an object that affects consumption of power transmitted by the wireless power transmitter based at least on the transmitter power difference Δ
T.
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Accused Products
Abstract
An apparatus and method for lost power detection are described. In one implementation, an apparatus for wireless transferring power comprises a wireless power transmitter configured to wirelessly transmit power at a power level sufficient to power or charge a chargeable device. The apparatus further comprises a controller configured to determine a first and second power difference between a first and second power measurement and the second and a third power measurement of the power level provided by the wireless power transmitter at a first, second, and third sample time, respectively. The controller is further configured to determine a transmitter power difference between the first power difference and the second power difference. The controller is further configured to determine an absence or a presence of an object that affects consumption of power transmitted by the wireless power transmitter based at least on the transmitter power difference Δ_T.
23 Citations
20 Claims
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1. An apparatus for wirelessly transferring power, the apparatus comprising:
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a wireless power transmitter configured to wirelessly transmit power at a power level sufficient to power or charge a chargeable device positioned within a charging region; and a controller circuit operationally coupled to the wireless power transmitter and configured to; determine a first power difference Δ
1(PTU) between a first power measurement P1(PTU) of the power level provided by the wireless power transmitter at a first sample time T1 and a second power measurement P2(PTU) of the power level provided by the wireless power transmitter at a second sample time T2,determine a second power difference Δ
2(PTU) between the second power measurement P2(PTU) and a third power measurement P3(PTU)of the power level provided by the wireless power transmitter at a third sample time T3,determine a transmitter power difference Δ
T between the first power difference Δ
1(PTU) and the second power difference Δ
2(PTU), and determine an absence or a presence of an object that affects consumption of power transmitted by the wireless power transmitter based at least on the transmitter power difference Δ
T. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for wirelessly transferring power, the method comprising:
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wirelessly transmitting power at a power level sufficient to power or charge a chargeable device positioned within a charging region; determining a first power difference Δ
1(PTU)between a first power measurement P1(PTU) of the power level provided by a wireless power transmitter at a first sample time T1 and a second power measurement P2(PTU) of the power level provided by the wireless power transmitter at a second sample time T2;determining a second power difference Δ
2(PTU) between the second power measurement P2(PTU) and a third power measurement P3(PTU) of the power level provided by the wireless power transmitter at a third sample time T3;determining a transmitter power difference Δ
T between the first power difference Δ
1(PTU)and the second power difference Δ
2(PTU); anddetermining an absence or a presence of an object that affects consumption of power transmitted by the wireless power transmitter based at least on the transmitter power difference Δ
T. - View Dependent Claims (12, 13, 14, 15, 16)
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17. An apparatus for wirelessly transferring power, the apparatus comprising:
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means for wirelessly transmitting power at a power level sufficient to power or charge a chargeable device positioned within a charging region; means for determining a first power difference Δ
1(PTU)between a first power measurement P1(PTU) of the power level provided by the transmitting means at a first sample time T1 and a second power measurement P2(PTU) of the power level provided by the transmitting means at a second sample time T2;means for determining a second power difference Δ
2(PTU) between the second power measurement P2(PTU) and a third power measurement P3(PTU)of the power level provided by the transmitting means at a third sample time T3;means for determining a transmitter power difference Δ
T between the first power difference Δ
1(PTU) and the second power difference Δ
2(PTU); andmeans for determining an absence or a presence of an object that affects consumption of power transmitted by the transmitting means based at least on the transmitter power difference Δ
T. - View Dependent Claims (18, 19, 20)
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Specification