Abstract: A coil module for an inductive power supply system includes a first coil, a processor and a control element. The processor, coupled to the first coil, is configured to detect a plurality of resonant frequencies of the first coil corresponding to a plurality of coordinate points, respectively. The control element, coupled to the processor, is configured to control the position of the first coil according to the plurality of resonant frequencies.

Abstract: A signal analysis circuit for determining whether a supplying-end module of an induction type power supply system receives a modulation signal from a receiving-end module includes a signal receiving circuit, a gain amplifier, a ramp generator, a comparator, a timer and a processor. The signal receiving circuit is configured to obtain a coil signal on a supplying-end coil of the supplying-end module. The gain amplifier is configured to adjust a voltage level of the coil signal to generate an amplification signal. The ramp generator is configured to generate and output a ramp signal. The comparator is configured to compare the amplification signal with the ramp signal to determine a trigger time on which the amplification signal and the ramp signal intersect. The timer is configured to obtain a time data corresponding to the trigger time. The processor is configured to analyze the modulation signal according to the time data.

Abstract: A decoding method for a supplying-end module of an induction type power supply system where the supplying-end module includes a supplying-end coil is provided. The decoding method includes steps of: receiving and storing a plurality of trigger data, each corresponding to a resonant cycle of a coil signal on the supplying-end coil; determining a plurality of rising or falling features in the plurality of trigger data, and marking a plurality of anchor points at positions corresponding to the plurality of rising or falling features; determining whether distances between the plurality of anchor points comply with an encoding interval, to obtain a plurality of valid anchor points from the plurality of anchor points; and obtaining a plurality of data codes according to the plurality of valid anchor points.

Abstract: A method of detecting a receiving-end module, for a supplying-end module of an induction type power supply system where the supplying-end module includes a supplying-end coil, includes detecting the supplying-end coil to obtain a self-resonant frequency of the supplying-end coil; determining whether the self-resonant frequency is smaller than a basic frequency; obtaining a first output power corresponding to the self-resonant frequency when the self-resonant frequency is determined to be smaller than the basic frequency and the degree of the self-resonant frequency smaller than the basic frequency exceeds a threshold; and sending an activation signal with the first output power, and starting to supply electric power when a data code corresponding to the activation signal is received.

Abstract: A signal analysis circuit for determining whether a supplying-end module of an induction type power supply system receives a modulation signal from a receiving-end module includes a signal receiving circuit, a gain amplifier, a ramp generator, a comparator, a timer and a processor. The signal receiving circuit is configured to obtain a coil signal on a supplying-end coil of the supplying-end module. The gain amplifier is configured to adjust a voltage level of the coil signal to generate an amplification signal. The ramp generator is configured to generate and output a ramp signal. The comparator is configured to compare the amplification signal with the ramp signal to determine a trigger time on which the amplification signal and the ramp signal intersect. The timer is configured to obtain a time data corresponding to the trigger time. The processor is configured to analyze the modulation signal according to the time data.

Abstract: A supplying-end module for an induction type power supply system includes a supplying-end coil, a first driver, a second driver and a signal detector. The first driver, coupled to the supplying-end coil, is used for driving the supplying-end coil to send electric power. The second driver, coupled to the supplying-end coil, is used for controlling the supplying-end coil to output a detection signal. The signal detector, coupled to the supplying-end coil, is used for detecting a reflection signal corresponding to the detection signal.

Abstract: A coil module for an induction type power supply system includes a supporting frame, an upper lid and a first wire. The upper lid, disposed on the supporting frame, includes a spiral slot. The first wire is used for being inserted in the spiral slot to form a coil.

Abstract: A signal modulation method for a receiving-end module of an induction type power supply system includes configuring a plurality of modulation periods corresponding to a modulation signal; performing modulation on a first terminal of an induction coil of the receiving-end module during the ith modulation period among the plurality of modulation periods, wherein i is an odd number; and performing modulation on a second terminal of the induction coil of the receiving-end module during the jth modulation period among the plurality of modulation periods, wherein j is an even number; wherein the second terminal does not undergo modulation when the first terminal is being modulated, and the first terminal does not undergo modulation when the second terminal is being modulated.

Abstract: A method of detecting a receiving-end module for a supplying-end module of an induction type power supply system, wherein the supplying-end module includes a supplying-end coil, includes the steps of: detecting a resonant frequency of the supplying-end coil; determining a coil distance of the receiving-end module and the supplying-end module according to the resonant frequency; obtaining a maximum resonant voltage and a minimum resonant voltage corresponding to the coil distance; and determining whether there is a deviation between the supplying-end module and the receiving-end module according to the maximum resonant voltage and the minimum resonant voltage and an input current of the supplying-end coil.

Abstract: A coil module for an induction type power supply system includes a supporting frame, an upper lid and a first wire. The upper lid, disposed on the supporting frame, includes a spiral slot. The first wire is used for being inserted in the spiral slot to form a coil.

Abstract: A power supply device used in an induction type power supply system is provided that includes a power supply coil, an auxiliary coil, a power supply driving module, a auxiliary driving module, a harmonic frequency measuring module, a voltage measuring module and a processing module. The power supply driving module drives the power supply coil. The auxiliary driving module drives the auxiliary coil. The harmonic frequency measuring module measures a resonance frequency of the power-supply coil according to a capacitive and inductive parameter related to the power-supply coil. The voltage measuring module tracks and locks a maximum of an oscillation voltage of the auxiliary coil. When the processing module determines that the resonance frequency is stable and the oscillation voltage decreases more than a predetermined ratio of the oscillation voltage, the processing module keeps the power supply driving module under a non-working status.

Abstract: An intruding metal detection method for a supplying-end module of an induction type power supply system having a supplying-end coil includes interrupting at least one driving signal of the induction type power supply system to stop driving the supplying-end coil during a measurement period, to generate a coil signal of the supplying-end coil; measuring a plurality of peaks of the coil signal within a plurality of consecutive oscillation cycles of the coil signal, to obtain a plurality of peak trigger voltages, respectively; calculating a first attenuation parameter according to a first peak trigger voltage and a second peak trigger voltage among the plurality of peak trigger voltages; and comparing the first attenuation parameter with a first threshold value to determine whether there is an intruding metal existing in a power supply range of the induction type power supply system.

Abstract: A power supply device used in an induction type power supply system is provided that includes a power supply coil, a auxiliary coil, a power supply driving module, a detection driving module, a signal detection module and a processing module. The power supply driving module drives the power supply coil to transmit a power signal. When the power supply driving module is under a non-working status, the detection driving module drives the auxiliary coil to transmit a detection signal and drives the auxiliary coil to transmit a data request signal. After transmitting the data request signal, the signal detection module detects a reflection signal corresponding to the data request signal on the auxiliary coil. The processing module keeps the power supply driving module under the non-working status when the reflection signal having a data characteristic is determined to be detected by the signal detection module.

Abstract: A coil module for an induction type power supply system includes a metal frame, a coil, a circuit board and an upper lid. The coil is disposed on a first surface of the metal frame. The circuit board, disposed on a second surface of the metal frame, includes a control circuit for controlling operations of the coil. The upper lid, for covering the coil, is composed of a non-metal material and has an arc structure.

Abstract: An intruding metal detection method for a supplying-end module of an induction type power supply system having a supplying-end coil includes: obtaining a previous peak trigger voltage measured during a previous measurement period and setting a reference voltage to be equal to the previous peak trigger voltage; interrupting at least one driving signal of the induction type power supply system to stop driving the supplying-end coil during a measurement period, to generate a coil signal of the supplying-end coil; measuring a first peak of the coil signal within an oscillation cycle of the coil signal, to obtain a first peak trigger voltage; comparing the first peak trigger voltage with the reference voltage; and determining that there is no intruding metal existing in a power supply range of the induction type power supply system when the first peak trigger voltage is equal to or close to the reference voltage.

Abstract: The present invention discloses an intruding metal detection method for a supplying-end module of an induction type power supply system having a supplying-end coil controlled by a first driving signal and a second driving signal. The method includes periodically generating a detection signal on the first driving signal and the second driving signal, wherein the detection signal controls the supplying-end coil to resonate and generate a coil signal; setting at least one threshold voltage and comparing a plurality of peak values of the coil signal with the at least one threshold voltage, respectively, to generate a plurality of trigger signals; determining whether to perform a pre-charging procedure according to a resonant frequency of the coil signal; and determining whether there is an intruding metal existing in a power supply range of the induction type power supply system according to the plurality of trigger signals and the resonant frequency.

Abstract: A decoding method for a signal processing circuit which receives a modulation data carried by a coil signal includes the following steps: determining a jitter in the coil signal; obtaining a trigger gap when the jitter appears; outputting a gap indicating signal when a length of the trigger gap is within a predefined range; determining whether a plurality of gap indicating signals appear in a first period and whether the gap indicating signals are scattered in the first period; setting a flag to a jitter status according to the above determination results; determining whether the flag is set to the jitter status during a second period, and filling a value in a time slot corresponding to the second period accordingly; and obtaining a data code of the modulation data according to the values filled in a plurality of time slots.

Abstract: An intruding metal detection method for a supplying-end module of an induction type power supply system having a supplying-end coil includes: obtaining a previous peak trigger voltage measured during a previous measurement period and setting a reference voltage to be equal to the previous peak trigger voltage; interrupting at least one driving signal of the induction type power supply system to stop driving the supplying-end coil during a measurement period, to generate a coil signal of the supplying-end coil; measuring a first peak of the coil signal within an oscillation cycle of the coil signal, to obtain a first peak trigger voltage; comparing the first peak trigger voltage with the reference voltage; and determining that there is no intruding metal existing in a power supply range of the induction type power supply system when the first peak trigger voltage is equal to or close to the reference voltage.

Abstract: A coil module for an induction type power supply system includes a supporting frame, an upper lid and a first wire. The upper lid, disposed on the supporting frame, includes a spiral slot. The first wire is used for being inserted in the spiral slot to form a coil.

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.