Efficiency monitor for inductive power transmission
First Claim
1. A method for use by an inductive power receiver for regulating power transferred from an inductive power outlet by providing a feedback signal to said inductive power outlet while receiving power therefrom, the method comprising:
- providing an inductive power receiver configured for the receiving of power, said inductive power receiver comprising;
a coil configured to draw power from said inductive power outlet;
a principal electrical load configured to receive power drawn by said coil; and
an ancillary electrical load configured to be selectively connected to said coil to receive power drawn thereby; and
said inductive power receiver transmitting a modulated signal to said inductive power outlet while receiving power therefrom by intermittently connecting said ancillary load to said coil at a rate determined by modulating a bit-rate signal according to at least one control signal from the principal electric load.
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0 Petitions
Accused Products
Abstract
An inductive power receiver configured for receiving power transferred from an inductive power outlet having a primary coil includes a secondary coil configured to form an inductive couple with the primary coil thereby facilitating the power transfer. The inductive power receiver further includes a transmission circuit having a variable amplifier configured to vary the voltage of the power drawn by the secondary coil, and a modulator configured to control the variable amplifier. The inductive power receiver is configured to modulate a signal by the varying of the voltage. An inductive power outlet configured for transferring power to the inductive power receiver includes a primary coil and a receiving circuit configured to detect changes in voltage of the power transferred and to produce an output signal based on the changes.
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Citations
20 Claims
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1. A method for use by an inductive power receiver for regulating power transferred from an inductive power outlet by providing a feedback signal to said inductive power outlet while receiving power therefrom, the method comprising:
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providing an inductive power receiver configured for the receiving of power, said inductive power receiver comprising; a coil configured to draw power from said inductive power outlet; a principal electrical load configured to receive power drawn by said coil; and an ancillary electrical load configured to be selectively connected to said coil to receive power drawn thereby; and said inductive power receiver transmitting a modulated signal to said inductive power outlet while receiving power therefrom by intermittently connecting said ancillary load to said coil at a rate determined by modulating a bit-rate signal according to at least one control signal from the principal electric load. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for use by an inductive power outlet for receiving a feedback signal from an inductive power receiver while transferring power thereto, the method comprising:
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providing an inductive power outlet comprising; a coil configured for the transferring; a current monitor configured to monitor power transferred by said coil and producing a current signal based thereupon; and a correlator configured to cross-correlate said current signal with a bit-rate signal, thereby producing an output signal; transferring power to said inductive power receiver via said coil; monitoring a current transferred, thereby producing a primary current signal; and cross-correlating the primary current signal with said bit-rate signal to generate output signal, thereby receiving said feedback signal from said inductive power receiver while transferring power thereto. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A method for transferring a feedback signal from an inductive power receiver to an inductive power transmitter while transferring power therebetween, the method comprising:
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providing said inductive power outlet comprising; a primary coil configured for the transferring; and a current monitor configured to monitor power transferred by said primary coil and producing a current signal based thereupon; providing said inductive power receiver configured for the receiving of power, said inductive power receiver comprising; a secondary coil configured to draw power from said primary coil; a principal electrical load configured to receive power drawn by said secondary coil; and an ancillary electrical load configured to be selectively connected to said secondary coil to receive power drawn thereby; inductively coupling said primary coil and said secondary coil; transferring power from said inductive power outlet to said inductive power receiver via said coupled coils; said inductive power receiver producing said feedback signal by intermittently connecting said ancillary load to said secondary coil, thereby transmitting said feedback signal as a modulated signal from said inductive power receiver to said inductive power outlet while receiving power therefrom; monitoring, by said inductive power outlet, current transferred by the primary coil, thereby producing a primary current signal; and said inductive power outlet generating an output signal, thereby receiving said feedback signal from said inductive power receiver while transferring power thereto. - View Dependent Claims (18, 19, 20)
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Specification