Low-loss data transmission method for high-power induction-type power supply system

• US 8,981,600 B2
• Filed: 03/22/2012
• Issued: 03/17/2015
• Est. Priority Date: 02/01/2011
• Status: Active Grant

• Current Assignee: Fu Da Tong Technology Co., Ltd.
• Original Assignee: Fu Da Tong Technology Co., Ltd.
• Inventors: Tsai, Ming-Chiu, Chan, Chi-Che
• Primary Examiner(s): Fureman, Jared
• Assistant Examiner(s): PEREZ BORROTO, ALFONSO
• Application Number:
  US13/427,715
• Publication Number:
  US 20120193998A1
• Time in Patent Office: 1,090 Days
• Field of Search: 307/104, 307/149, 307/151, 320/108, 713/300, 713/340
• US Class Current: 307/104
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 7/00308 Overvoltage protection
• CPC Class Codes: H04L 1/243 at the transmitter, using a loop-back

Abstract

A low-loss data transmission method used in a high-power induction-type power supply system consisting of a supplying-end module and a receiving-end module is disclosed. The supplying-end microprocessor of the supplying-end module has built-in anti-noise signal analysis software that can remove noises from the data signal fed back by the receiving-end module, assuring high stability of the transmission of data signal and reducing energy dissipation of data transmission. Subject to a special circuit arrangement of the receiving-end coil of the receiving-end module, signal modulation is performed on a low voltage DC square wave, assuring a high level of stability of the supplying of power supply to the receiving-end module.

Claims

1. A low-loss data transmission method for high-power induction-type power supply system consisting of a supplying-end module and a receiving-end module, comprising the steps of:

(a) initializing a data analysis software;

(b) starting up a main program of the supplying-end module and clearing counters therein;

(c) waiting for the generation of an interruption signal by a built-in voltage comparator of a supplying-end microprocessor of the supplying-end module;

(d) determining whether or not the time interval between the generation of the present interruption signal and the generation of the last interruption signal is higher than a predetermined time interval reading threshold, and then proceeding to step (e) when the time interval is lower than the predetermined time interval reading threshold, or step (f) when the time interval is higher than the predetermined time interval reading threshold;

(e) judging the signal to be a noise signal and omitting the signal, and then returning to step (b);

(f) examining the time interval between the present trigger signal and the last modulated signal and then proceeding to step (g) if this time interval is below a predetermined non-modulated signal length reading threshold, or step (h) if this time interval surpasses the non-modulated signal reading threshold;

(g) judging the signal to be a ringing noise and omitting the signal, and then returning to step (b);

(h) running a data code inspection program;

(i) examining the presence of a start signal, and then proceeding to step (n) when a start signal is in presence, or step (j) when no start signal is in presence;

(j) examining whether or not the length of the signal is equal to a predetermined start signal length, and then proceeding to step (k) when positive, or step (m) when negative;

(k) the length of the signal being equal to the predetermined start signal length, and then marking the signal with a start byte and then returning to step (c);

(l) the received data signal being unrecognizable and the data receiving being failed, and then returning to step (b) to reset the counters and to wait for a next comparator interruption for data analysis;

(m) waiting for receiving a next data signal as a start signal is in presence and then stopping the time length in which the counter retrieves the interruption signal;

(n) judging the currently received time length to be a modulated data signal by means of transition triggering, and then proceeding to step (o) if the signal is a modulated signal, or step (u) if the signal is not a modulated signal;

(o) checking the logic to be in conformity with the modulated length range of [logic 1] or [logic 0], and then proceeding to step (p) when in conformity, or returning to step (l) when not in conformity;

(p) the detected time length being within the set range, filling the corresponding logic bits in a receiving memory, and then proceeding to step (q);

(q) checking whether or not the assigned number of bits has been completely received, and then returning to step (c) to wait for a next comparator interruption when negative, or proceeding to step (r) when positive;

(r) checking the correctness of the data code of the code, and then proceeding to step (s) if the data code is correct, or returning to step (l) if the data code is incorrect;

(s) completing data receiving and clearing the counter so that the time length in which a next interruption occurs after completion of the present data transmission can be recognized;

(t) outputting the received data code for use by the system, and then returning to step (b);

(u) checking the logic to be in conformity with the non-modulated length range of [logic 1] or [logic 0], and then returning to step (p) when in conformity, or to step (l) when not in conformity.

2. The low-loss data transmission method for high-power induction-type power supply system as claimed in claim 1, wherein the initialization of said data analysis software in step (a) is to define data length, start signal length, modulated and non-modulated logic signal lengths, non-modulated signal length reading threshold, and data transmission time interval reading threshold.

3. The low-loss data transmission method for high-power induction-type power supply system as claimed in claim 1, wherein said supplying-end module comprises a supplying-end microprocessor, a power driver unit, a signal analysis circuit, a coil voltage detection circuit, a display unit, a power supplying unit, a resonant circuit and a supplying-end coil, said power driver unit, said signal analysis circuit, said coil voltage detection circuit, said display unit and said power supplying unit being respectively electrically coupled to said supplying-end microprocessor, said power driver unit comprising a MOSFET driver, a high-end MOSFET component and a low-end MOSFET component, said MOSFET driver being electrically coupled with said supplying-end microprocessor, said high-end MOSFET component and said low-end MOSFET component being respectively electrically coupled with said resonant circuit, said high-end MOSFET component being also electrically coupled with said power supplying unit and said resonant circuit, said signal analysis circuit comprising a rectifier diode electrically coupled with said resonant circuit, a series of resistors electrically connected in series to said rectifier diode and a plurality of capacitors electrically connected in parallel to said series of resistors, said coil voltage detection circuit consisting of resistors and capacitors, said power supplying unit being also electrically coupled with said power driver unit, said power supplying unit comprising a power source, two current sensing shunt resistors electrically connected in series to said power source and a DC-DC buck converter electrically connected to said power source, said supplying-end coil being electrically coupled with said resonant circuit for transmitting power supply and data signal wirelessly.

4. The low-loss data transmission method for high-power induction-type power supply system as claimed in claim 1, wherein said supplying-end microprocessor has built therein operating, control and anti-noise signal analysis software and a voltage comparator.

5. The low-loss data transmission method for high-power induction-type power supply system as claimed in claim 1, wherein said receiving-end module comprises a receiving-end microprocessor, a voltage detection circuit electrically coupled to said receiving-end microprocessor, a rectifier and filter circuit electrically coupled to said receiving-end microprocessor, an amplitude modulation circuit electrically coupled to said receiving-end microprocessor, a protection circuit breaker electrically coupled to said receiving-end microprocessor, a voltage stabilizer circuit electrically coupled to said receiving-end microprocessor, a DC-DC buck converter electrically coupled to said receiving-end microprocessor, and a resonant circuit and a receiving-end coil electrically connected in parallel to a rectifier of said rectifier and filter circuit, said receiving-end coil being electrically connected with said amplitude modulation circuit in series.

6. The low-loss data transmission method for high-power induction-type power supply system as claimed in claim 5, wherein said amplitude modulation circuit comprises a resistor and an N-type MOSFET component electrically connected in series.

7. The low-loss data transmission method for high-power induction-type power supply system as claimed in claim 5, wherein said amplitude modulation circuit comprises a capacitor and an N-type MOSFET component electrically connected in series.