High-power induction-type power supply system and its data transmission method

• US 8,810,072 B2
• Filed: 06/07/2011
• Issued: 08/19/2014
• 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): Barnie, Rexford
• Assistant Examiner(s): Kessie, Daniel
• Application Number:
  US13/154,965
• Publication Number:
  US 20110278949A1
• Time in Patent Office: 1,169 Days
• Field of Search: 307/104, 320/108, 713/300, 713/340, 455/573
• 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 high-power induction-type power supply system includes a supplying-end module consisting of 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, and a receiving-end module consisting of a receiving-end microprocessor, a voltage detection circuit, a rectifier and filter circuit, an amplitude modulation circuit, a protection circuit breaker, a voltage stabilizer circuit, a DC-DC buck converter, a resonant circuit and a receiving-end coil. By means of single bit data analysis to start up power supply, sensing signal transmitting time during standby mode is minimized. Subject to asymmetric data signal data encoding and decoding system to recognize data code, power loss is minimized during synchronous transmission of power supply and data signal, and a high capacity of fault tolerance is achieved.

Claims

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

(a) standby time is up, start to transmit a sensing signal;

(b) transmit a predetermined main operation frequency to a register;

(c) coil voltage detection circuit that is electrically connected to the supplying-end microprocessor of the supplying-end module starts up ADC (analog-to-digital converter) mode;

(d) start to output system defined maximum operating frequency to the power driver that is electrically connected to the supplying-end microprocessor;

(e) lower the operating frequency;

(f) determine whether or not the current operating frequency is equal to the set value of the main operating frequency, and then return to step (e) when negative, or proceed to step (g) when positive;

(g) end frequency modulation output, start to sense signal;

(h) check whether or not the signal analysis circuit receives a data signal, and then proceed to step (i) when positive, or step (j) when negative;

(i) data code inspection software checks the data code to be recognizable or not, and then provide power supply to the receiving-end module when positive, or proceed to step (i) when negative;

(j) no data is sensed, the coil voltage detection circuit starts up the ADC (analog-to-digital converter) for data conversion;

(k) the sensing signal is ended;

turn off the output to the supplying-end module;

(l) use the ADC (analog-to-digital converter) data of the coil voltage detection circuit to set the operating frequency and the adjust the output power of the sensing signal; and

(m) enter the standby mode, and start to count time until next startup.

2. The data transmission method as claimed in claim 1, wherein the step (h) to check whether or not the signal analysis circuit receives a data signal is performed subject to the following sub-steps:

(h00) prepare to start data transmission;

(h01) define data signal lengths, including modulated length of logic [1], non-modulated length of logic [1], modulated length of logic [0] and non-modulated length of logic [0];

(h02) enter the modulation condition and then start to count the data of the start signal;

(h03) counting time is up, change the mode to start modulate;

(h04) send out the data to be transmitted, and then checks from the MSB (most significant bit), the logic signal to be sent is [0] or [1], and then proceed to step (h05) if it is [0], or step (h06) if it is [1];

(h05) judge the status of the logic [0], and then proceed to step (h051) if in modulation, or step (h052) if not in modulation;

(h051) count the modulated length of logic [0], and then turn off the circuit, and then proceed to step (h07);

(h052) count the non-modulated length of logic [1, and then conduct the switching circuit, and then proceed to step (h07);

(h06) judge the status of logic [1], and then proceed to step (h061) if in modulation, or step (h062) if not in modulation;

(h061) count the modulated length of logic [1], and then turn off the circuit, and then proceed to step (h07);

(h062) count the non-modulated length of logic [1], and then turn on the circuit, and then proceed to step (h07);

(h07) check transmission of the data to be transmitted, and then proceed to step (h08) when transmission is not finished yet, or step (h09) when transmission is finished;

(h08) transmission is not finished, thus prepare transmission of the next bit, and then return to step (h06);

(h09) transmission is finished, enter delay counting;

(h10) conduct the protection circuit breaker; and

(h11) end the data signal transmission procedure.

3. The data transmission method as claimed in claim 1, wherein the data code inspection step (i) is performed subject to the following sub-steps:

(i00) start up data code inspection program;

(i01) check whether or not the data signal contains a start signal, and then, proceed to step (i02) when negative, or step (i05) when positive;

(i02) check whether or not the data signal is the length of start, and then, proceed to step (i03) when positive, or step (i04) when negative;

(i03) the data signal is the length of start, mark start signal, and then proceed to step (i05);

(i04) data signal is unrecognizable, and then prepare to turn off the output;

(i05) prepares to receive a next bit, and wait for state transition triggering;

(i06) state transition is triggered, stop counting, and judge the status of the current data signal, and then proceed to step (i07) if the data signal is in modulation, or step (i08) if the data signal is not in modulation;

(i07) the signal is modulated, check it is in conformity with the modulated length of logic [1] or [0], and then proceed to step (i09) when positive, or return to step (i04) when negative;

(i08) the signal is not modulated, check it is in conformity with the non-modulated length of logic [1] or [0], and then proceed to step (i09) when positive, or return to step (i04) when negative;

(i09) data signal is in conformity with the defined length, and then fill the corresponding logic code into the receiving-end memory;

(i10) check whether or not the assigned number of bits has been received, and then, proceed to step (i11) when positive, or return to step (i05) when negative;

(i11) received the data code, check the format to be correct or not and then, proceed to step (i12) when correct, or return to step (i04) when not correct; and

(i12) the format is correct;

enter the power supplying mode to execute normal power supply supplying operation.

4. The data transmission method as claimed in claim 1, wherein said supplying-end module comprises a supplying-end microprocessor having installed therein an operation/control/data decoding and analysis-related software program, a power driver electrically coupled to said supplying-end microprocessor, a signal analysis circuit electrically coupled to said supplying-end microprocessor, a coil voltage detection circuit electrically coupled to said supplying-end microprocessor, a display unit electrically coupled to said supplying-end microprocessor, a power supplying unit electrically coupled to said supplying-end microprocessor, a supplying-end resonant circuit electrically coupled to said power driver and a supplying-end coil electrically coupled to said supplying-end resonant circuit and adapted for transmitting power supply and data signal wirelessly.

5. The data transmission method as claimed in claim 1, wherein said receiving-end module comprises a receiving-end microprocessor having installed therein an operation/control-related software program, a voltage detection circuit electrically coupled to said receiving-end module, a rectifier and filter circuit t electrically coupled to said receiving-end module, an amplitude modulation circuit electrically coupled to said receiving-end module, a protection circuit breaker electrically coupled to said receiving-end module, a voltage stabilizer circuit electrically coupled to said receiving-end module, a DC-DC buck converter electrically coupled to said receiving-end module, a resonant circuit and a receiving-end coil electrically coupled to said receiving-end resonant circuit, said receiving-end resonant circuit and said receiving-end coil being electrically connected in parallel to said rectifier and filter circuit and electrically connected with said amplitude modulation circuit in series, said voltage detection circuit, said protection circuit breaker, said voltage stabilizer circuit and said DC-DC buck converter being respectively electrically coupled with said rectifier and filter circuit, said rectifier and filter circuit and said amplitude modulation circuit being respectively electrically coupled with said receiving-end resonant circuit.

6. A high-power induction-type power supply system consisting of a supplying-end module and a receiving-end module, wherein:

said supplying-end module comprises a supplying-end microprocessor having installed therein an operation/control/data decoding and analysis-related software program, a power driver, a signal analysis circuit, a coil voltage detection circuit, a display unit, a power supplying unit, a supplying-end resonant circuit and a supplying-end coil, said power driver unit, said signal analyzer, said coil voltage detection circuit, said display unit and said power supplying unit being respectively electrically coupled to said supplying-end microprocessor, said supplying-end coil being electrically coupled with said resonant circuit and adapted for transmitting power supply and data signal wirelessly;

said receiving-end module comprises a receiving-end microprocessor having installed therein an operation/control-related software program, a voltage detection circuit, a rectifier and filter circuit, an amplitude modulation circuit, a protection circuit breaker, a voltage stabilizer circuit, a DC-DC buck converter, a receiving-end resonant circuit and a receiving-end coil, said voltage detection circuit, said rectifier and filter circuit, said amplitude modulation circuit, said protection circuit breaker, said voltage stabilizer circuit and said DC-DC buck converter being respectively electrically coupled with said receiving-end microprocessor, said rectifier and filter circuit, said protection circuit breaker and said DC-DC buck converter being electrically connected in series, said receiving-end resonant circuit and said receiving-end coil being electrically connected in parallel to said rectifier and filter circuit\and electrically connected with said amplitude modulation circuit in series, said voltage detection circuit, said protection circuit breaker, said voltage stabilizer circuit and said DC-DC buck converter being respectively electrically coupled with said rectifier and filter circuit, said rectifier and filter circuit and said amplitude modulation circuit being respectively electrically coupled with said receiving-end resonant circuit, which is electrically coupled with said receiving-end coil.

7. The high-power induction-type power supply system as claimed in claim 6, wherein said power driver unit comprises a MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) 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, said high-end MOSFET component and said low-end MOSFET component being respectively electrically coupled with said supplying-end resonant circuit, said high-end MOSFET component being electrically coupled with said power supplying unit and said supplying-end resonant circuit.

8. The high-power induction-type power supply system as claimed in claim 6, wherein said power supplying unit of said supplying-end module comprises a power source, and two current sensing shunt resistors electrically connected in series to said power source.

9. The high-power induction-type power supply system as claimed in claim 6, wherein said display unit of said supplying-end module is selected from the group of liquid crystal display screen, LED display screen and cold light display screen.

10. The high-power induction-type power supply system as claimed in claim 6, wherein said voltage detection circuit comprises a plurality of resistors electrically connected in series to said supplying-end microprocessor, and a plurality of sensing points electrically connected with the resistors, said rectifier and filter circuit, said protection circuit breaker and said DC-DC buck converter.

11. The high-power induction-type power supply system as claimed in claim 6, wherein said rectifier and filter circuit comprises a rectifier and a filter capacitor respectively electrically connected in parallel to said voltage detection circuit, said protection circuit breaker and said DC-DC buck converter.

12. The high-power induction-type power supply system as claimed in claim 6, wherein said amplitude modulation circuit comprises an inductor, a rectifying diode and a MOSFET component electrically connected in series.

13. The high-power induction-type power supply system as claimed in claim 6, wherein said protection circuit breaker comprises a resistor, a P-type MOSFET component and an N-type MOSFET component, the resistor, P-type MOSFET component and N-type MOSFET component of said protection circuit breaker being electrically connected in series, said N-type MOSFET component being electrically coupled with said receiving-end microprocessor.

14. The high-power induction-type power supply system as claimed in claim 6, wherein said voltage stabilizer circuit comprises a buffer capacitor, a DC-DC step-down converter and a power output terminal, the buffer capacitor and DC-DC step-down converter of said voltage stabilizer circuit being electrically coupled to said protection circuit breaker.