Signal analysis method and circuit
First Claim
1. A signal analysis method used in a supplying-end module of an induction type power supply system, for determining whether the supplying-end module receives a modulation signal from a receiving-end module of the induction type power supply system, the signal analysis method comprising:
- obtaining a coil signal on a supplying-end coil of the supplying-end module;
retrieving parts of the coil signal higher than a reference voltage to generate a peak signal;
tracking the peak signal to obtain a peak voltage level;
configuring a high voltage level higher than the peak voltage level with a preconfigured distance between the high voltage level and the peak voltage level and configuring a low voltage level lower than the peak voltage level with a preconfigured distance between the peak voltage level and the low voltage level; and
determining whether a plurality of peak values of the peak signal reach the high voltage level and determining whether the plurality of peak values of the peak signal reach the low voltage level during a determination cycle, and determining whether the supplying-end module receives the modulation signal accordingly.
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Abstract
A signal analysis method for determining whether a supplying-end module of an induction type power supply system receives a modulation signal from a receiving-end module of the induction type power supply system includes obtaining a coil signal on a supplying-end coil of the supplying-end module; retrieving parts of the coil signal higher than a reference voltage to generate a peak signal; tracking the peak signal to obtain a peak voltage level; configuring a high voltage level higher than the peak voltage level and a low voltage level lower than the peak voltage level; and determining whether a plurality of peak values of the peak signal reach the high voltage level and determining whether the plurality of peak values of the peak signal reach the low voltage level during a determination cycle, and determining whether the supplying-end module receives the modulation signal accordingly.
59 Citations
22 Claims
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1. A signal analysis method used in a supplying-end module of an induction type power supply system, for determining whether the supplying-end module receives a modulation signal from a receiving-end module of the induction type power supply system, the signal analysis method comprising:
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obtaining a coil signal on a supplying-end coil of the supplying-end module; retrieving parts of the coil signal higher than a reference voltage to generate a peak signal; tracking the peak signal to obtain a peak voltage level; configuring a high voltage level higher than the peak voltage level with a preconfigured distance between the high voltage level and the peak voltage level and configuring a low voltage level lower than the peak voltage level with a preconfigured distance between the peak voltage level and the low voltage level; and determining whether a plurality of peak values of the peak signal reach the high voltage level and determining whether the plurality of peak values of the peak signal reach the low voltage level during a determination cycle, and determining whether the supplying-end module receives the modulation signal accordingly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A signal analysis circuit used in a supplying-end module of an induction type power supply system, for determining whether the supplying-end module receives a modulation signal from a receiving-end module of the induction type power supply system, the signal analysis circuit comprising:
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a voltage measurement circuit, for obtaining a coil signal on a supplying-end coil of the supplying-end module; an operational amplifier, for retrieving parts of the coil signal higher than a reference voltage to generate a peak signal; a first comparator module, coupled to the operational amplifier, for tracking the peak signal to obtain a peak voltage level; a processor, coupled to the first comparator module, for receiving the peak voltage level and configuring a high voltage level higher than the peak voltage level and a low voltage level lower than the peak voltage level; a second comparator module, coupled to the processor and the operational amplifier, for comparing the peak signal with the high voltage level to determine whether a plurality of peak values of the peak signal reach the high voltage level during a determination cycle, to obtain a first comparison result; and a third comparator module, coupled to the processor and the operational amplifier, for comparing the peak signal with the low voltage level to determine whether the plurality of peak values of the peak signal reach the low voltage level during the determination cycle, to obtain a second comparison result; wherein the processor determines whether the supplying-end module receives the modulation signal according to the first comparison result of the second comparator module and the second comparison result of the third comparator module. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification