System for transmitting ultrasonic short-range wireless power and method of charging ultrasonic wireless power
First Claim
1. An ultrasonic wireless power charging method performed by a transmission device and a reception device, comprising:
- sensing a transmission device and a reception device which are within a range using signals generated by a communication unit of the transmission device and a communication unit of the reception device;
transmitting a sensed signal of the transmission device to the reception device;
transmitting a response signal of the reception device to the transmission device;
forming a resonance frequency to match resonance frequencies of the transmission device and the reception device;
receiving and recognizing a charged-state signal of the reception device by the transmission device; and
charging a capacitor included in the reception device by receiving power transmitted using the resonance frequency of the transmission device.
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Abstract
Disclosed is an ultrasonic short-range wireless power transmission system comprising: an ultrasonic transmission transducer configured to transmit power, wherein the ultrasonic transmission transducer comprises: a converter configured to convert power received from an external power source; a controller configured to control power of a modulator and power of an amplifier; a communication unit configured to communicate with an external reception transducer; a sensor configured to sense ultrasonic waves transferred from an ultrasonic wave emission region; the modulator electrically connected to the controller and configured to generate a signal for ultrasonic short-range wireless power transmission; and the amplifier configured to amplify a modulation signal generated by the modulator and convert the modulation signal into power; and one or more transmission modules configured to receive the power from the amplifier and convert an electrical reception signal into ultrasonic waves.
8 Citations
18 Claims
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1. An ultrasonic wireless power charging method performed by a transmission device and a reception device, comprising:
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sensing a transmission device and a reception device which are within a range using signals generated by a communication unit of the transmission device and a communication unit of the reception device; transmitting a sensed signal of the transmission device to the reception device; transmitting a response signal of the reception device to the transmission device; forming a resonance frequency to match resonance frequencies of the transmission device and the reception device; receiving and recognizing a charged-state signal of the reception device by the transmission device; and charging a capacitor included in the reception device by receiving power transmitted using the resonance frequency of the transmission device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification