System and method for device identification
First Claim
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1. A method for detection of a device capable of receiving inductive power, the method comprising:
- driving an inductive coil to transfer energy to a device having a power receiving coil;
determining a frequency response from the device as the inductive coil is driven, the frequency response being a passive response from the device;
storing a frequency signature in memory;
determining whether the frequency response of the device matches the frequency signature stored in memory; and
controlling an inductive power supply in response to a determination that the frequency response from the device matches the frequency signature in memory.
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Abstract
An inductive power supply system includes a non-contact power supply for energizing a device. The inductive power supply system includes a communication system for enabling communication between a device and the system. The device transmits an identifier to the system. If the device does not have a transmitter, the system attempts to determine the type of device from a characterization of the power consumption by the device. If the device cannot be characterized, the inductive power supply system can be operated manually.
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Citations
27 Claims
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1. A method for detection of a device capable of receiving inductive power, the method comprising:
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driving an inductive coil to transfer energy to a device having a power receiving coil; determining a frequency response from the device as the inductive coil is driven, the frequency response being a passive response from the device; storing a frequency signature in memory; determining whether the frequency response of the device matches the frequency signature stored in memory; and controlling an inductive power supply in response to a determination that the frequency response from the device matches the frequency signature in memory. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A device detection system for detecting one of a plurality of devices capable of receiving inductive power, the system comprising:
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an inductive power supply for transferring wireless power to a device having a power receiving coil configured for receiving operating wireless power; an inductive coil; a processor for determining a frequency response from the device as said inductive coil is driven, said frequency response being a passive response from the device; a memory storing a frequency signature; and wherein said processor is configured to determine whether said frequency response from the device matches said frequency signature, and wherein said processor controls said inductive power supply in response to a determination that said frequency response from the device matches said frequency signature. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A method of detecting a known remote device, said method comprising:
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disposing a load in proximity to an inductive power supply, wherein the inductive power supply is configured for transferring wireless power to the load having a power receiving coil configured for receiving operating wireless power; applying power to an inductive coil to enable detection of the load in proximity to the power supply; characterizing the load by obtaining a frequency response from the load, the frequency response being a passive response from the load; determining whether the load is a known remote device based on the frequency response; and controlling the inductive power supply to supply operating wireless power in response to said determining the load is a known remote device. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A detection system comprising:
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an inductive power supply for transferring wireless power to a load configured for receiving operating wireless power; wherein said system is capable of driving an inductive coil to enable detection of the load in proximity to said inductive power supply; a processor for characterizing the load by obtaining a frequency response of the load as said inductive coil is driven, the frequency response being a passive response of the load; a memory storing a frequency signature associated with the load; and wherein the processor detects the load based on a comparison between said frequency response and said frequency signature. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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Specification