Power density control for wireless power transfer
First Claim
Patent Images
1. A system, comprising:
- a sender comprising;
a first signal generator;
a first amplifier coupled to the first signal generator, said first amplifier configured to receive power from a power source and to generate an electrical transmission signal adapted to be used to generate ultrasonic waves;
a sender transducer coupled to the first amplifier, the sender transducer adapted and configured to generate ultrasonic waves based on the electrical transmission signal received from the amplifier;
a sender controller coupled to at least one of the first signal generator, the first amplifier and the sender transducer, the sender controller adapted and configured to adjust the power density at a receiver of the ultrasonic waves generated by the sender transducer based on a control signal received from the receiver; and
a sender communications device adapted to communicate with a receiver communications device and receive the control signal from the receiver; and
the receiver comprising;
a receiver transducer adapted and configured to receive ultrasonic waves generated by the sender transducer, to generate a receiver electrical signal based on the received ultrasonic waves, and to connect to a receiver electrical storage device adapted and configured to store electrical energy based on the receiver electrical signal generated by the receiver transducer;
the receiver communications device adapted and configured to send input to the sender communications device, the input comprising a control signal comprising an indication that at least a portion of the receiver transducer is obstructed from the sender transducer, wherein the indication that the at least a portion of the receiver transducer is obstructed to the sender transducer further comprises a location of the at least a portion of the receiver transducer that is obstructed; and
a receiver controller coupled to at least one of the receiver transducer and the receiver electrical storage device.
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Accused Products
Abstract
A signal generator generates an electrical signal that is sent to an amplifier, which increases the power of the signal using power from a power source. The amplified signal is fed to a sender transducer to generate ultrasonic waves that can be focused and sent to a receiver. The receiver transducer converts the ultrasonic waves back into electrical energy and stores it in an energy storage device, such as a battery, or uses the electrical energy to power a device. In this way, a device can be remotely charged or powered without having to be tethered to an electrical outlet.
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Citations
17 Claims
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1. A system, comprising:
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a sender comprising; a first signal generator; a first amplifier coupled to the first signal generator, said first amplifier configured to receive power from a power source and to generate an electrical transmission signal adapted to be used to generate ultrasonic waves; a sender transducer coupled to the first amplifier, the sender transducer adapted and configured to generate ultrasonic waves based on the electrical transmission signal received from the amplifier; a sender controller coupled to at least one of the first signal generator, the first amplifier and the sender transducer, the sender controller adapted and configured to adjust the power density at a receiver of the ultrasonic waves generated by the sender transducer based on a control signal received from the receiver; and a sender communications device adapted to communicate with a receiver communications device and receive the control signal from the receiver; and the receiver comprising; a receiver transducer adapted and configured to receive ultrasonic waves generated by the sender transducer, to generate a receiver electrical signal based on the received ultrasonic waves, and to connect to a receiver electrical storage device adapted and configured to store electrical energy based on the receiver electrical signal generated by the receiver transducer; the receiver communications device adapted and configured to send input to the sender communications device, the input comprising a control signal comprising an indication that at least a portion of the receiver transducer is obstructed from the sender transducer, wherein the indication that the at least a portion of the receiver transducer is obstructed to the sender transducer further comprises a location of the at least a portion of the receiver transducer that is obstructed; and a receiver controller coupled to at least one of the receiver transducer and the receiver electrical storage device. - View Dependent Claims (2)
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3. A system, comprising:
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a signal generator; an amplifier coupled to the signal generator, said amplifier configured to receive power from a power source and to generate an electrical transmission signal adapted to be used to generate ultrasonic waves; a sender transducer coupled to the amplifier, the sender transducer adapted and configured to generate ultrasonic waves based on the electrical transmission signal received from the amplifier; a sender controller coupled to at least one of the signal generator, the amplifier and the sender transducer, sender controller adapted and configured to adjust the power density at a receiver of the ultrasonic waves generated by the sender transducer based on a control signal received from the receiver; and a sender communications device adapted to communicate with a receiver and receiver and receive a control signal comprising an indication that at least a portion of the receiver transducer is obstructed from the sender transducer, wherein the indication that the at least a portion of the receiver transducer is obstructed to the sender transducer further comprises a location of the at least a portion of the receiver transducer that is obstructed. - View Dependent Claims (4, 5, 6, 7, 8)
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9. A system comprising:
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a receiver transducer adapted and configured to receive ultrasonic waves generated by a sender transducer and to generate a receiver electrical signal based on the received ultrasonic waves, the receiver transducer further adapted and configured to be connected to a receiver electrical storage device adapted and configured to store electrical energy based on the receiver electrical signal generated by the receiver transducer; a receiver communications device adapted and configured to send input to a sender communications device, the input comprising a control signal comprising an indication that at least a portion of the receiver transducer is obstructed from the sender transducer, wherein the indication that the at least a portion of the receiver transducer is obstructed to the sender transducer further comprises a location of the at least a portion of the receiver transducer that is obstructed; and a receiver controller coupled to at least one of the receiver transducer and the receiver electrical storage device. - View Dependent Claims (10, 11, 12)
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13. A method comprising:
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emitting ultrasonic waves from an ultrasonic transducer of a sender, the ultrasonic waves directed at a receiver; receiving a communication at the sender from the receiver, the communication comprising a control signal comprising an indication that at least a portion of an ultrasonic transducer of a receiver is obstructed from the ultrasonic transducer of the sender, wherein the indication that the at least a portion of the ultrasonic transducer of the receiver is obstructed to the ultrasonic transducer of the sender further comprises a location of the at least a portion of the ultrasonic transducer of the receiver that is obstructed; and adjusting the power density at the receiver of the ultrasonic waves generated by the sender transducer. - View Dependent Claims (14, 15)
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16. A method comprising:
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receiving ultrasonic waves from an ultrasonic transducer of a sender at a receiver; determining that at least a portion of ultrasonic transducer of the receiver is obstructed to the ultrasonic transducer of the sender; and sending a communication to the sender, the communication comprising a control signal comprising an indication that the at least a portion of ultrasonic transducer of the receiver is obstructed to the ultrasonic transducer of the sender, wherein the indication that the at least a portion of ultrasonic transducer of the receiver is obstructed to the ultrasonic transducer of the sender further comprises an indication of a location of the at least a portion of the ultrasonic transducer of the receiver that is obstructed. - View Dependent Claims (17)
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Specification