Supplying-end module of induction type power supply system and voltage measurement method thereof
First Claim
1. A voltage measuring method for a supplying-end module of an induction type power supply system, the voltage measuring method comprising:
- generating a coil signal on a supplying-end coil of the supplying-end module;
clamping the coil signal to generate a clamp coil signal;
performing a signal processing on the clamp coil signal to respectively generate a first signal and a second signal;
generating a cyclic signal, wherein a frequency of the cyclic signal is equal to a frequency of the coil signal;
comparing the first signal with the second signal via a comparator to obtain a first time and a second time when a voltage level of the first signal is equal to a voltage level of the second signal during a cycle of the cyclic signal;
calculating a middle time between the first time and the second time; and
sampling the clamp coil signal or the coil signal to obtain a peak voltage of the coil signal according to the middle time.
1 Assignment
0 Petitions
Accused Products
Abstract
A voltage measuring method for a supplying-end module of an induction type power supply system includes generating a coil signal on a supplying-end coil of the supplying-end module; clamping the coil signal to generate a clamp coil signal; performing signal processing on the clamp coil signal to generate a first signal and a second signal, respectively; generating a cyclic signal, a frequency of which is equal to a frequency of the coil signal; comparing the first signal and the second signal via a comparator to obtain a first time and a second time when the first signal and the second signal have an equal voltage level during a cycle of the cyclic signal; calculating a middle time of the first time and the second time; and sampling the clamp coil signal or the coil signal to obtain a peak voltage of the coil signal according to the middle time.
53 Citations
20 Claims
-
1. A voltage measuring method for a supplying-end module of an induction type power supply system, the voltage measuring method comprising:
-
generating a coil signal on a supplying-end coil of the supplying-end module; clamping the coil signal to generate a clamp coil signal; performing a signal processing on the clamp coil signal to respectively generate a first signal and a second signal; generating a cyclic signal, wherein a frequency of the cyclic signal is equal to a frequency of the coil signal; comparing the first signal with the second signal via a comparator to obtain a first time and a second time when a voltage level of the first signal is equal to a voltage level of the second signal during a cycle of the cyclic signal; calculating a middle time between the first time and the second time; and sampling the clamp coil signal or the coil signal to obtain a peak voltage of the coil signal according to the middle time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A supplying-end module used for an induction type power supply system, the supplying-end module comprising:
-
a supplying-end coil for generating a coil signal; a clamp circuit coupled to the supplying-end coil, for clamping the coil signal to generate a clamp coil signal; a signal processing module coupled to the clamp circuit, for performing a signal processing on the clamp coil signal to respectively generate a first signal and a second signal; a cyclic signal generator for generating a cyclic signal, wherein a frequency of the cyclic signal is equal to a frequency of the coil signal; a comparator coupled to the signal processing module, for comparing the first signal with the second signal to generate a comparison result; a timer coupled to the cyclic signal generator and the comparator, for obtaining a first time and a second time when a voltage level of the first signal is equal to a voltage level of the second signal according to the comparison result during a cycle of the cyclic signal; a processor coupled to the timer, for calculating a middle time between the first time and the second time; and a sampling module coupled to the processor, for sampling the clamp coil signal or the coil signal to obtain a peak voltage of the coil signal according to the middle time. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification