Inductive power supply system and intruding metal detection method thereof
First Claim
1. An inductive power supply system, utilized for processing an inductive power transmission operation and detecting whether an intruding metal exists inside the inductive power supply system, comprising:
- an input power module for receiving a stable voltage source;
a storage module for storing a predetermined information;
a processing module coupled to the input power module and the storage module for generating a control signal according to the predetermined information and a feedback signal;
a driving module coupled to the input power module and the processing module for transforming the stable voltage source into a driving voltage according to the control signal;
an inductive coil coupled to the driving module for electrically transmitting the driving voltage to a receipt power device, so as to process the inductive power transmission operation; and
a feedback module coupled to the inductive coil for generating the feedback signal according to the driving voltage received by the inductive coil;
wherein the predetermined information represents an initial state of the inductive power supply system comprising a sinusoidal amplitude corresponding to the driving voltage, and the intruding metal can affect another sinusoidal amplitude of the feedback signal to make the processing module correspondingly generate the control signal during the inductive power transmission operation.
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Abstract
The inductive power supply system comprises an input power module for receiving a stable voltage source, a storage module for storing a predetermined information, a processing module for generating a control signal according to the predetermined information and a feedback signal, a driving module for transforming the stable voltage source into a driving voltage according to the control signal, an inductive coil for electrically transmitting the driving voltage to process an inductive power transmission operation, and a feedback module for generating the feedback signal according to the driving voltage received by the inductive coil, where the predetermined information represents an initial state of the inductive power supply system comprising a sinusoidal amplitude corresponding to the driving voltage, and an intruding metal can affect another sinusoidal amplitude of the feedback signal to make the processing module correspondingly generate the control signal during the inductive power transmission operation.
85 Citations
23 Claims
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1. An inductive power supply system, utilized for processing an inductive power transmission operation and detecting whether an intruding metal exists inside the inductive power supply system, comprising:
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an input power module for receiving a stable voltage source; a storage module for storing a predetermined information; a processing module coupled to the input power module and the storage module for generating a control signal according to the predetermined information and a feedback signal; a driving module coupled to the input power module and the processing module for transforming the stable voltage source into a driving voltage according to the control signal; an inductive coil coupled to the driving module for electrically transmitting the driving voltage to a receipt power device, so as to process the inductive power transmission operation; and a feedback module coupled to the inductive coil for generating the feedback signal according to the driving voltage received by the inductive coil; wherein the predetermined information represents an initial state of the inductive power supply system comprising a sinusoidal amplitude corresponding to the driving voltage, and the intruding metal can affect another sinusoidal amplitude of the feedback signal to make the processing module correspondingly generate the control signal during the inductive power transmission operation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for an inductive power supply system, which comprises a processing module, an inductive coil and a predetermined information for processing an inductive power transmission operation and detecting whether an intruding metal exists inside the inductive power supply system, comprising:
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switching the inductive power supply system between a setting operation or the inductive power transmission operation according to a control signal; and when the inductive power supply system processes the setting operation, the processing module processes a first operation process, and when the inductive power supply system processes the inductive power transmission operation, the processing module processes a second operation process; wherein the predetermined information is an initial state of the inductive power supply system to be formed as a initial look-up table, the first operation process modifies the initial look-up table of the inductive power supply system to be formed as an adjusted look-up table, and the second operation process detects whether the intruding metal exists in the inductive power supply system according to the adjusted look-up table; wherein the first operation process further comprises; processing a voltage division operation for a stable voltage source to generate a first division voltage value; predetermining the first division voltage value as an information header added into the initial look-up table as the adjusted look-up table; setting an operational frequency of the processing module as a maximum operational frequency of the inductive power supply system according to the first division voltage value; transmitting the operational frequency to a driving module such that the driving module correspondingly generates a driving voltage to the inductive coil, and a feedback module transforms a voltage signal of the inductive coil into a feedback signal; and determining whether the voltage signal of the inductive coil exceeds a maximum operational frequency of the feedback module, and lowering the current operational frequency set by the processing module to obtain a plurality of information headers at different stable voltage sources if the voltage signal of the inductive coil does not exceed the maximum operational frequency of the feedback module so as to form the adjusted look-up table. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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Specification