CN113809831A - A wireless power supply data transmission circuit and method and communication system - Google Patents

Abstract

The invention relates to a wireless power supply data transmission circuit and method and a communication system, including a first power supply terminal, a first data terminal, a wireless power supply transmitting unit, an enabling switch, a first power supply unit, a first power supply switch, a first power supply The communication unit and the power supply transmitting module of the first controller; the wireless power supply transmitting unit is connected to the first power supply terminal through the enabling switch, and the enabling switch is connected to the first controller; the first power supply unit is connected to the first power supply terminal, and the first communication unit is connected to the first power supply terminal through the enabling switch. The first power supply switch is connected to the first power supply unit; the power supply receiving module includes a second power supply terminal, a second data terminal, a wireless power supply receiving unit, a second power supply switch, a second power supply unit, a second communication unit and a second controller; The second power supply unit is connected to the second power supply terminal, and the second communication unit is connected to the second power supply unit through the second power supply switch. The implementation of the present invention can improve the quality of data transmission.

Description

A wireless power supply data transmission circuit and method and communication system

technical field

The present invention relates to the field of communication technologies, and more particularly, to a wireless power supply data transmission circuit and method and a communication system.

Background technique

At present, when wireless charging and data communication exist at the same time, most of them are based on data loaded on the power supply coil. In this way, due to the mutual restriction of charging and data communication process, the distance of wireless charging is relatively close, the transmission volume of communication data cannot be too much, and the carrying capacity at the receiving end is not enough. At the same time, due to the private protocol of data transmission and insufficient Transparency leads to limitations in the application of this scheme.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a wireless power supply data transmission circuit and method and a communication system aiming at some of the above-mentioned technical defects of the prior art.

The technical solution adopted by the present invention to solve the technical problem is to construct a wireless power supply data transmission circuit, including: a power supply transmitting module and a power supply receiving module;

The power supply transmitting module includes: a first power supply terminal for connecting power input, a first data terminal for communication data transmission, a wireless power supply transmitting unit, an enable switch, a first power supply unit, a first power supply switch, a first power supply a communication unit and a first controller; wherein,

The wireless power transmission unit is connected to the first power supply terminal through the enable switch, and the enable switch is connected to the first controller for receiving a control level to turn on or off;

the first power supply unit is connected to the first power supply terminal, the first communication unit is connected to the first power supply unit through the first power supply switch, and the first power supply switch is connected to the first controller, Used to receive a control level to turn on or off;

The first controller connects the first data terminal and the first communication unit, and is configured to receive communication data from the first data terminal and send it to the first communication unit or receive communication data from the first data terminal. The communication data of a communication unit is sent to the first data terminal;

The power supply receiving module includes: a second power supply terminal for providing power output, a second data terminal for communication data transmission, and a wireless power supply receiving unit, a second power supply switch, a second power supply unit, a second communication unit, and a wireless power supply receiving unit. a second controller; wherein,

The second power supply unit is connected to the second power supply terminal, the second communication unit is connected to the second power supply unit via the second power supply switch, and the second power supply switch is connected to the second controller , for receiving a control level to turn on or off;

The second controller is connected to the second data terminal and the second communication unit, and is configured to receive communication data from the second communication unit and send to the second data terminal or receive communication data from the second communication unit The communication data of the data terminal is sent to the second communication unit;

Wherein, the first communication unit is configured to establish a communication connection with the second communication unit.

Preferably, in the wireless power supply data transmission circuit of the present invention, the wireless power supply transmitting unit includes: a wireless transmitting coil H13, a transmitting resonance unit, a wireless charging chip U13, a wireless charging chip U12, a diode D16, a resistor R16 and a resistor R141;

The sixth pin of the wireless charging chip U12 is connected to the enable switch, the fifth pin of the wireless charging chip U12 is connected to the first end of the resistor R141 and the first end of the resistor R16, the The second end of the resistor R16 is connected to the cathode of the diode D16, the fourth pin of the wireless charging chip U12 and the first power supply end, and the second end of the resistor R141 is connected to the anode of the diode D16, so The first pin of the wireless charging chip U12 is connected to the first power supply terminal, the second pin of the wireless charging chip U12 is connected to the eighth pin of the wireless charging chip U13, and the second pin of the wireless charging chip U12 is connected to the eighth pin of the wireless charging chip U13. The three pins are grounded, the fifth, sixth and seventh pins of the wireless charging chip U13 are all grounded, and the first, second and third pins of the wireless charging chip U13 and the fourth pin are both connected to the first end of the transmitting resonance unit and the first end of the wireless transmitting coil H13, and the second end of the transmitting resonance unit is connected to the first power supply end and the wireless transmitting coil Second end of H13.

Preferably, in the wireless power supply data transmission circuit of the present invention, the enable switch includes a switch tube Q13, a resistor R18, a resistor R19 and a resistor R126; the first end of the switch tube Q13 is connected to the resistor R18 The first end and the first end of the received resistor R19, the second end of the switch tube Q13 and the second end of the resistor R19 are both grounded, and the second end of the resistor R18 is connected to the first controller, The third end of the switch tube Q13 is connected to the first end of the resistor R126 and the sixth pin of the wireless charging chip U12, and the second end of the resistor R126 is connected to the first power terminal.

Preferably, in the wireless power supply data transmission circuit of the present invention, the first power supply switch includes: a switch tube Q11, a switch tube Q12, a resistor R110, a resistor R17, a resistor R1 and a resistor R14;

The second end of the switch tube Q11 is connected to the first power supply unit and the first end of the resistor R1, and the first end of the switch tube Q11 is connected to the second end of the resistor R1 and the resistor R14. The first end, the third end of the switch tube Q11 is connected to the first communication unit, the second end of the resistor R14 is connected to the second end of the switch tube Q12, and the first end of the switch tube Q12 is connected The first end of the resistor R17 and the first end of the resistor R110, the second end of the resistor R17 is connected to the first controller, the second end of the resistor R110 and the first end of the switch Q12. All three terminals are grounded.

Preferably, in the wireless power supply data transmission circuit of the present invention, the first power supply unit includes a power supply chip U11;

The first pin of the power supply chip U11 is grounded, the second pin and the fourth pin of the power supply chip U11 are connected to the second end of the switch tube Q12, and the third pin of the power supply chip U11 is connected to the second end of the switch tube Q12. the first power terminal.

Preferably, in the wireless power supply data transmission circuit of the present invention, the first communication unit includes a switch tube Q18, a switch tube Q110, a resistor R135, a resistor R139 and a communication chip M12, and a communication chip connected to the communication chip M12 Antenna ANT11; where,

The second end of the switch tube Q18 is connected to the CLK end of the communication chip M12 and the first end of the resistor R135, and the first end of the switch tube Q18 is connected to the second end of the resistor R135 and the switch The third end of the tube Q11, the third end of the switch tube Q18 is connected to the first controller;

The second end of the switch tube Q110 is connected to the DATA end of the communication chip M12 and the first end of the resistor R139, and the first end of the switch tube Q110 is connected to the second end of the resistor R139 and the switch The third end of the transistor Q11 and the third end of the switching transistor Q110 are connected to the first controller.

Preferably, in the wireless power supply data transmission circuit of the present invention, the wireless power supply receiving unit includes: a wireless receiving coil H21, a receiving resonance unit, a wireless charging chip U23, a voltage regulator D218, a diode D214, a diode D216, an inductor L21, resistor R289, resistor R290 and resistor R291;

The first end of the wireless receiving coil H21 is connected to the first end of the receiving resonance unit and grounded, and the second end of the wireless receiving coil H21 is connected to the second end of the receiving resonance unit and the anode of the diode D213, so the The cathode of the diode D213 is connected to the cathode of the voltage regulator D218, the second pin of the wireless charging chip U23 and the first end of the resistor R289, and the second end of the resistor R289 is connected to the wireless charging chip The seventh pin of U23, the third pin of the wireless charging chip U23 is connected to the cathode of the diode D216 and the first end of the inductor L21, the anode of the voltage regulator tube D218, the anode of the diode D216 and the fourth pin of the wireless charging chip U23 are both grounded, the second end of the inductor L21 is connected to the second power supply end, and the fifth pin of the wireless charging chip U23 is connected to the first pin of the resistor R290 terminal and the first terminal of the resistor R291, the second terminal of the resistor R290 is connected to the second power terminal, and the second terminal of the resistor R291 is grounded.

Preferably, in the wireless power supply data transmission circuit of the present invention, the second power supply switch includes a switch tube Q21, a switch tube Q22, a resistor R21, a resistor R24, a resistor R210 and a resistor R7;

The second end of the switch tube Q21 is connected to the second power supply unit and the first end of the resistor R21, and the first end of the switch tube Q21 is connected to the second end of the resistor R21 and the resistor R24. The first end, the third end of the switch tube Q21 is connected to the second communication unit, the second end of the resistor R24 is connected to the second end of the switch tube Q22, and the first end of the switch tube Q22 is connected The first end of the resistor R7 and the first end of the resistor R210, the third end of the switch Q22 and the second end of the resistor R210 are grounded, and the second end of the resistor R7 is connected to the second control device.

Preferably, in the wireless power supply data transmission circuit of the present invention, the second power supply unit includes a power supply chip U21, the first pin of the power supply chip U21 is grounded, and the second pin of the power supply chip U21 is connected to the ground. The fourth pins are all connected to the second end of the switch tube Q21, and the third pin of the power supply chip U21 is connected to the second power supply end.

Preferably, in the wireless power supply data transmission circuit of the present invention, the second communication unit includes a switch tube Q28, a switch tube Q210, a resistor R235, a resistor R239 and a communication chip M22, and a communication chip connected to the communication chip M22 Antenna ANT21; where,

The second end of the switch tube Q28 is connected to the CLK end of the communication chip M22 and the first end of the resistor R235, and the first end of the switch tube Q28 is connected to the second end of the resistor R235 and the switch The third end of the tube Q21, the third end of the switch tube Q28 is connected to the second controller;

The second end of the switch tube Q210 is connected to the DATA end of the communication chip M22 and the first end of the resistor R239, and the first end of the switch tube Q210 is connected to the second end of the resistor R239 and the switch The third end of the transistor Q21 and the third end of the switching transistor Q210 are connected to the second controller.

Preferably, in the wireless power supply data transmission circuit of the present invention, the power supply transmitting module further includes a connector CON11, and the first power supply terminal and the first data terminal are both connected to the connector CON11; and/ or

The power supply receiving module further includes a connector CON21, and both the second power terminal and the second data terminal are connected to the connector CON21.

The present invention also constructs a communication system, including the wireless power supply data transmission circuit described in any of the above, wherein the communication system includes a first communication device and a second communication device, and the power supply transmitting module is arranged in the In the first communication device, the power supply receiving module is disposed in the second communication device.

The present invention also constructs a wireless power supply data transmission method, which is applied to the wireless power supply data transmission circuit described in any of the above, including:

S1. During the communication process between the first communication unit and the second communication unit, monitor the received data from the second communication unit received by the first communication unit through the first controller;

S2. Confirm whether the first communication unit has the received data, if so, execute the step S1, if not, execute the step S3;

S3. Start timing to obtain the continuous duration of the first communication unit without the received data, and continue to confirm whether there is the received data when the continuous duration is less than the first preset duration, and if so, execute S6, If not, go to step S4;

S4. Continue timing to update the continuous duration until the continuous duration is greater than or equal to the first preset duration;

S5. Drive the first power supply switch to be turned off for a second preset period of time and/or the enable switch to be turned off for a third preset period of time through the first controller;

S6, clear the timer, and execute the step S1.

Preferably, in the wireless power supply data transmission method of the present invention, 1. In the step S5, the first power supply switch is driven by the first controller to turn off the second preset time period and/or all The enabling switch is turned off for a third preset duration; including:

Drive the first power supply switch to turn off the second preset time period by the first controller, and execute the step S6;

And when the step S5 is performed again, the enable switch is driven by the first controller to turn off the third preset time period, and the step S6 is performed.

Preferably, in the wireless power supply data transmission method of the present invention, the second preset duration and the third preset duration are the same duration;

In the step S5, driving the first power supply switch to turn off the first power supply switch for a second preset time period and/or the enabling switch to turn off a third preset time period through the first controller; including:

The first power supply switch and the enabling switch are driven by the first controller to turn off the same time period at the same time.

Implementing a wireless power supply data transmission circuit, method and communication system of the present invention has the following beneficial effects: improving data transmission quality.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments, in which:

1 is a schematic structural diagram of an embodiment of a wireless power supply data transmission circuit according to the present invention;

2 is a circuit schematic diagram of an embodiment of a wireless power supply data transmission circuit of the present invention;

3 is a circuit schematic diagram of another embodiment of a wireless power supply data transmission circuit of the present invention;

4 is a circuit schematic diagram of another embodiment of a wireless power supply data transmission circuit of the present invention;

5 is a schematic circuit diagram of another embodiment of a wireless power supply data transmission circuit of the present invention;

6 is a circuit schematic diagram of another embodiment of a wireless power supply data transmission circuit of the present invention;

7 is a circuit schematic diagram of another embodiment of a wireless power supply data transmission circuit of the present invention;

FIG. 8 is a schematic flowchart of an embodiment of a wireless power supply data transmission method according to the present invention.

Detailed ways

In order to have a clearer understanding of the technical features, objects and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, in the first embodiment of a wireless power supply data transmission circuit of the present invention, it includes: a power supply transmitter module 100 and a power supply receiver module 200; the power supply transmitter module 100 includes: a first power supply for connecting to a power input terminal 130 , the first data terminal 140 for communication data transmission, and the wireless power supply transmitting unit 110 , the enabling switch 180 , the first power supply unit 170 , the first power supply switch 150 , the first communication unit 120 and the first controller 160 ; wherein, the wireless power supply transmitting unit 110 is connected to the first power supply terminal 130 via the enable switch 180, and the enable switch 180 is connected to the first controller 160 for receiving the control level to turn on or off; the first power supply unit 170 Connected to the first power terminal 130, the first communication unit 120 is connected to the first power supply unit 170 via the first power supply switch 150, and the first power supply switch 150 is connected to the first controller 160 for receiving a control level to turn on or off The first controller 160 is connected to the first data terminal 140 and the first communication unit 120, and is configured to receive the communication data from the first data terminal 140 and send it to the first communication unit 120 or receive the communication data from the first communication unit 120. The communication data is sent to the first data terminal 140; the power supply receiving module 200 includes: a second power supply terminal 230 for providing power output, a second data terminal 240 for communication data transmission, and the wireless power supply receiving unit 210, the first Two power supply switches 250 , a second power supply unit 270 , a second communication unit 220 and a second controller 260 ; wherein the second power supply unit 270 is connected to the second power supply terminal 230 , and the second communication unit 220 is connected to the second power supply terminal 230 via the second power supply switch 250 Two power supply units 270, and the second power supply switch 250 is connected to the second controller 260 for receiving a control level to turn on or off; the second controller 260 is connected to the second data terminal 240 and the second communication unit 220 , and is configured to receive the communication data from the second communication unit 220 and send it to the second data terminal 240 or receive the communication data from the second data terminal 240 and send it to the second communication unit 220; wherein, the first communication unit 120 Used to establish a communication connection with the second communication unit 220 .

Specifically, the wireless power supply data transmission circuit is composed of a power supply transmitting module 100 and a power supply receiving module 200. In the power supply transmitting module 100, a power input is provided through the first power supply terminal 130, and the power input is processed by the wireless power supply transmitting unit 110 to form electromagnetic waves It is transmitted to the power supply receiving module 200 . In the power supply receiving module 200, the electromagnetic wave from the wireless power supply transmitting unit 110 is received by the wireless power supply receiving unit 210 and processed to obtain the power supply voltage, and the power supply output is provided through the second power supply terminal 230 to provide the second controller 260 and the second communication unit. 220 powered. In the power supply transmitting module 100 , the power supply of the first controller 160 and the first communication unit 120 may also be provided through the first power supply terminal 130 . The power supply of the first power supply unit 170 to the first communication unit 120 can be controlled to be turned on or off through the first power supply switch 150 , and the first power supply switch 150 is connected to the first controller 160 by receiving the control level of the first controller 160 to turn on or off. At the same time, the wireless power supply transmitting unit 110 can be controlled by the enable switch 180 to enable or disable the operation. The enable switch 180 is connected to the first controller 160 and is turned on or off by receiving the control level of the first controller 160 , to realize the enabling action of the wireless power supply transmitting unit 110 by the input voltage of the first power supply terminal 130 . At the same time, the first communication unit 120 establishes a communication data connection with the first controller 160 , and the communication data can communicate with other circuits through the first controller 160 and through the first data terminal 140 . At the same time, the first communication unit 120 and the second communication unit 220 establish a communication link for communication data transmission. The power supply of the second communication unit 220 may be obtained by converting the output of the second power supply terminal 230 by the second power supply unit 270 . At the same time, the power supply of the second power supply unit 270 to the second communication unit 220 can be controlled to be turned on or off through the second power supply switch 250 , and the second power supply switch 250 is connected to the second controller 260 by receiving the control level of the second controller 260 . to turn on or off. Among them, the communication data is transmitted through the controller, which is a common data transmission process. The first communication unit 120 and the second communication unit 220 may be wirelessly connected. Through the circuit structure, wireless power supply in the process of data transmission is realized. Data transmission and power transmission are set separately to improve data transmission quality.

Optionally, as shown in FIG. 2 , the wireless power supply transmitting unit 110 includes: a wireless transmitting coil H13, a transmitting resonance unit, a wireless charging chip U13, a wireless charging chip U12, a diode D16, a resistor R16 and a resistor R141; The sixth pin is connected to the enable switch 180, the fifth pin of the wireless charging chip U12 is connected to the first end of the resistor R141 and the first end of the resistor R16, the second end of the resistor R16 is connected to the cathode of the diode D16, and the wireless charging chip U12 The fourth pin of the wireless charging chip U12 is connected to the first power supply terminal 130, the second terminal of the resistor R141 is connected to the anode of the diode D16, the first pin of the wireless charging chip U12 is connected to the first power supply terminal 130, and the second pin of the wireless charging chip U12 is connected to The eighth pin of the wireless charging chip U13, the third pin of the wireless charging chip U12 are grounded, the fifth, sixth and seventh pins of the wireless charging chip U13 are all grounded, and the first pin of the wireless charging chip U13 is grounded. The pin, the second pin, the third pin and the fourth pin are all connected to the first end of the transmitting resonance unit and the first end of the wireless transmitting coil H13, and the second end of the transmitting resonance unit is connected to the first power supply terminal 130 and the wireless transmitting coil H13. The second end of the wireless transmitting coil H13. Specifically, in the wireless power supply transmitting unit 110 , the wireless charging chip U13 and the wireless charging chip U12 may use XKT series chips, wherein the enabling end of the wireless charging chip U12 controls its power-on or power-off through the enable switch 180 . The second pin of the wireless charging chip U12 is connected to the eighth pin of the wireless charging chip U13, the output pins of the wireless charging chip U13 are connected to the first end of the transmitting resonance unit, and the first end of the wireless charging chip U12 is connected to the transmitting resonance unit. the second end of the unit. Through this unit, after the power input of the first power supply terminal 130 is converted, it resonates with the transmitting resonance unit and the transmitting coil H13 to form a corresponding electromagnetic wave for transmission. The transmitting resonance unit may include a resonance capacitor, and the power input of the first power terminal 130 may be a 12V input.

Optionally, as shown in FIG. 2, the enable switch 180 includes a switch tube Q13, a resistor R18, a resistor R19 and a resistor R126; the first end of the switch tube Q13 is connected to the first end of the resistor R18 and the first end of the received resistor R19. The second end of the switch tube Q13 and the second end of the resistor R19 are both grounded, the second end of the resistor R18 is connected to the first controller 160, and the third end of the switch tube Q13 is connected to the first end of the resistor R126 and the wireless charging chip The sixth pin of U12 and the second terminal of the resistor R126 are connected to the first power terminal 130 . Specifically, in the enable switch 180, the switch Q13 can be a triode, and the base of the triode receives the control level from the first controller 160 via the resistor R18, so as to be turned on or off according to the control level, and at When the transistor is turned on or off, the power input of the first power supply terminal 130 pulls down or raises the level of the sixth pin (also an enable pin) of the wireless charging chip U12, so that the wireless charging chip U12 For enabling work or shutting down work. The power input of the first power supply terminal 130 may use its 12V input. Through this circuit, the power output of the power supply terminal of the wireless power supply can be controlled, and the power-on or power-off of the power supply receiving module 200 can be controlled correspondingly. The switch tube Q13 can also be composed of other transistors. The first controller 160 may use a general MCU module to realize the output of the control level.

Optionally, as shown in FIG. 3 , the first power supply switch 150 includes a switch tube Q11, a switch tube Q12, a resistor R110, a resistor R17, a resistor R1 and a resistor R14; the second end of the switch tube Q11 is connected to the first power supply unit 170 and the resistor R14. The first end of the resistor R1, the first end of the switch tube Q11 is connected to the second end of the resistor R1 and the first end of the resistor R14, the third end of the switch tube Q11 is connected to the first communication unit 120, and the second end of the resistor R14 is connected to The second end of the switch tube Q12, the first end of the switch tube Q12 is connected to the first end of the resistor R17 and the first end of the resistor R110, the second end of the resistor R17 is connected to the first controller 160, the second end of the resistor R110 and the The third ends of the switch tube Q12 are all grounded. Specifically, in the first power supply switch 150, the switch Q11 may be a MOS tube, and the switch Q12 may be a triode, wherein the gate of the MOS tube is connected to the collector of the triode through the resistor R14, and the base of the triode is connected through the resistor R17 The first controller 160 is connected to receive the control level of the first controller 160 to turn on or off. The MOS transistor is turned on or off according to the on or off of the triode. The first power supply unit 170 The output of the first communication unit 120 is connected to the first communication unit 120 after passing through the MOS tube, and the first communication unit 120 is powered on or off by turning on or off the MOS tube. The switch tube Q11 and the switch tube Q12 can also use other transistors.

Optionally, as shown in FIG. 3 , the first power supply unit 170 includes a power supply chip U11; the first pin of the power supply chip U11 is grounded, and the second pin and the fourth pin of the power supply chip U11 are connected to the second pin of the switch tube Q12. terminal, the third pin of the power supply chip U11 is connected to the first power terminal 130 . Specifically, in the first power supply unit 170 , the power supply chip U11 may be an AMS117 chip, whose input terminal is connected to the first power supply terminal 130 for receiving power input and performing voltage conversion to obtain the working voltage required by the first communication unit 120 . The power input received by the power supply chip U11 from the first power terminal 130 may be a 5V power input. That is, it can be understood that the power input provided by the first power terminal 130 may be a plurality of the same or different power inputs.

Optionally, as shown in FIG. 4 , the first communication unit 120 includes a switch tube Q18, a switch tube Q110, a resistor R135, a resistor R139, a communication chip M12, and a communication antenna ANT11 connected to the communication chip M12; The second end is connected to the CLK end of the communication chip M12 and the first end of the resistor R135, the first end of the switch tube Q18 is connected to the second end of the resistor R135 and the third end of the switch tube Q11, and the third end of the switch tube Q18 is connected to the third end of the switch tube Q18. A controller 160; the second end of the switch tube Q110 is connected to the DATA end of the communication chip M12 and the first end of the resistor R139, the first end of the switch tube Q110 is connected to the second end of the resistor R139 and the third end of the switch tube Q11, The third end of the switch tube Q110 is connected to the first controller 160 . Specifically, the communication chip M12 and the communication antenna ANT11 may use an existing communication module, such as a Bluetooth module. The CLK terminal of the communication chip M12 is connected to the SCLK terminal of the first controller 160 through the switch Q18, wherein the SCLK terminal of the first controller 160 is connected to the first power terminal 130 through the pull-up resistor R134, so as to pass the first power terminal 130 Provides a pull-up voltage. The DATA terminal of the communication chip M12 is connected to the DATA terminal of the first controller 160 through the switch Q110, wherein the DATA terminal of the first controller 160 is connected to the first power terminal 130 through the pull-up resistor R138, so as to provide the power supply through the first power terminal 130. pull voltage. The switch tube Q18 and the switch tube Q110 can be MOS tubes, and the bases of the MOS tubes are respectively connected to the output of the switch tube Q11, so as to be turned on or off by the output of the switch tube Q11, so as to realize the transmission of corresponding data or signals .

Optionally, as shown in FIG. 5 , the wireless power supply receiving unit 210 includes: a wireless receiving coil H21, a receiving resonance unit, a wireless charging chip U23, a voltage regulator D218, a diode D214, a diode D216, an inductor L21, a resistor R289, and a resistor R290 and resistor R291; the first end of the wireless receiving coil H21 is connected to the first end of the receiving resonance unit and grounded, the second end of the wireless receiving coil H21 is connected to the second end of the receiving resonance unit and the anode of the diode D213, and the cathode of the diode D213 is connected The cathode of the voltage regulator D218, the second pin of the wireless charging chip U23 and the first end of the resistor R289, the second end of the resistor R289 is connected to the seventh pin of the wireless charging chip U23, and the third pin of the wireless charging chip U23 Connect the cathode of the diode D216 and the first end of the inductor L21, the anode of the voltage regulator D218, the anode of the diode D216 and the fourth pin of the wireless charging chip U23 are all grounded, and the second end of the inductor L21 is connected to the second power supply terminal 230, The fifth pin of the wireless charging chip U23 is connected to the first end of the resistor R290 and the first end of the resistor R291, the second end of the resistor R290 is connected to the second power terminal 230, and the second end of the resistor R291 is grounded. Specifically, in the wireless power supply receiving unit 210, the wireless charging chip U23 may use T3168 and chips of the same series. The receiving coil H21 and the receiving resonance unit receive the electromagnetic waves from the transmitting coil H13. The receiving resonance unit may be a resonance capacitor. After the received electromagnetic wave passes through the wireless charging chip U23 and its peripheral circuits, it is output through its third pin, and is connected to the second power supply terminal 230 through the inductor L21, and the second power supply terminal 230 provides power output, which is used for Supply power to each working module in the wireless power supply receiving unit 210 , for example, supply power to the second power supply unit 270 and the second controller 260 . Wherein, the power output of the second power terminal 230 may be 5V output.

Optionally, as shown in FIG. 6 , the second power supply switch 250 includes a switch tube Q21, a switch tube Q22, a resistor R21, a resistor R24, a resistor R210 and a resistor R7; the second end of the switch tube Q21 is connected to the second power supply unit 270 and The first end of the resistor R21, the first end of the switch Q21 is connected to the second end of the resistor R21 and the first end of the resistor R24, the third end of the switch Q21 is connected to the second communication unit 220, and the second end of the resistor R24 is connected. The end is connected to the second end of the switch tube Q22, the first end of the switch tube Q22 is connected to the first end of the resistor R7 and the first end of the resistor R210, the third end of the switch tube Q22 and the second end of the resistor R210 are grounded, and the resistor R7 The second end of is connected to the second controller 260 . Specifically, in the second power supply switch 250, the switch tube Q21 may be a MOS tube, and the switch tube Q22 may be a triode, wherein the gate of the MOS tube is connected to the collector of the triode through the resistor R24, and the base of the triode is connected to the collector of the triode through the resistor R7 The second controller 260 is connected to receive the control level of the second controller 260 to turn on or off. The MOS transistor is turned on or off according to the on or off of the triode. The second power supply unit 270 The output of the MOSFET is connected to the second communication unit 220 after passing through the MOS tube, and the second communication unit 220 is powered on or off by turning on or off the MOS tube. The switch tube Q21 and the switch tube Q22 can also use other transistors. Wherein the second controller 260 can use a general-purpose MCU MoExpress to realize the output of the control level.

Optionally, as shown in FIG. 6 , the second power supply unit 270 includes a power supply chip U21, the first pin of the power supply chip U21 is grounded, and the second pin and the fourth pin of the power supply chip U21 are both connected to the first pin of the switch tube Q21. Two terminals, the third pin of the power supply chip U21 is connected to the second power terminal 230 . Specifically, in the second power supply unit 270 , the power supply chip U21 can be an AMS117 chip, and its input terminal is connected to the second power supply terminal 230 for receiving the output power of the wireless power supply receiving unit 210 and performing voltage conversion to obtain the requirements of the second communication unit 220 operating voltage.

Optionally, as shown in FIG. 6 , the second communication unit 220 includes a switch tube Q28, a switch tube Q210, a resistor R235, a resistor R239, a communication chip M22, and a communication antenna ANT21 connected to the communication chip M22; The second end is connected to the CLK end of the communication chip M22 and the first end of the resistor R235, the first end of the switch tube Q28 is connected to the second end of the resistor R235 and the third end of the switch tube Q21, and the third end of the switch tube Q28 is connected to the third end of the switch tube Q28. Two controllers 260; the second end of the switch tube Q210 is connected to the DATA end of the communication chip M22 and the first end of the resistor R239, the first end of the switch tube Q210 is connected to the second end of the resistor R239 and the third end of the switch tube Q21, The third end of the switch Q210 is connected to the second controller 260 . Specifically, the communication chip M22 and the communication antenna ANT21 may use an existing communication module, such as a Bluetooth module. The CLK terminal of the communication chip M22 is connected to the SCLK terminal of the second controller 260 through the switch Q28 , and the SCLK terminal of the second controller 260 is connected to the second power terminal 230 through the pull-up resistor R234 so as to pass the second power terminal 230 Provides a pull-up voltage. The DATA terminal of the communication chip M22 is connected to the DATA terminal of the second controller 260 through the switch Q210, wherein the DATA terminal of the second controller 260 is connected to the second power terminal 230 through a pull-up resistor R238, so as to provide the power supply through the second power terminal 230. pull voltage. The switch tube Q28 and the switch tube Q210 can be MOS tubes, and the bases of the MOS tubes are respectively connected to the output of the switch tube Q21, so as to be turned on or off by the output of the switch tube Q21, so as to realize the transmission of corresponding data or signals .

Optionally, the power supply transmitting module 100 further includes a connector CON11, and both the first power terminal 130 and the first data terminal 140 are connected to the connector CON11; Receive power input and communication data transmission. For the first power terminal 130, different input voltages can be input through different pins of the connector CON11.

Optionally, as shown in FIG. 7 , the power supply receiving module 200 further includes a connector CON21, and both the second power terminal 230 and the second data terminal 240 are connected to the connector CON21. Specifically, the power supply receiving module 200 can be connected to an external device through the connector CON21 to realize power output and communication data transmission.

In addition, a communication system of the present invention includes the wireless power supply data transmission circuit according to any one of the above, wherein the communication system includes a first communication device and a second communication device, and the power supply transmitting module 100 is arranged on the first communication device, and the power supply The receiving module 200 is disposed in the second communication device. That is, by setting up a first communication device and a second communication device that can communicate with each other, and placing the power supply transmitting module 100 and the power supply receiving module 200 on different communication devices, it is possible to establish communication between the two communication devices through wireless power supply.

In addition, as shown in FIG. 8, a wireless power supply data transmission method of the present invention is applied to the wireless power supply data transmission circuit as described in any of the above. S1. During the communication process between the first communication unit and the second communication unit, the The first controller monitors the received data received by the first communication unit from the second communication unit; S2, confirms whether the first communication unit has received data, if yes, executes step S1, if not, executes step S3; S3, Start timing to obtain the continuous duration when the first communication unit does not receive data, and continue to confirm whether there is data received when the continuous duration is less than the first preset duration, if so, execute S6, if not, execute Step S4; S4, Continue timing to update the continuous duration until the continuous duration is greater than or equal to the first preset duration; S5, drive the first power supply switch to turn off the second preset duration and/or enable the switch to turn off the third preset duration through the first controller ; S6, clear the timing, and execute step S1. That is, in the working process of the wireless power supply data transmission circuit, when the first communication unit and the second communication unit establish communication for data transmission, the data transmission process of the first communication unit and the second communication unit in the communication process is in response to each other. , when any one of the parties is abnormal, that is, neither of the two parties can get the other party's. During the data transmission process, the data received by the first communication unit from the second communication unit can be monitored by the first controller. When the first communication unit cannot receive data from the second communication unit, that is, when the first communication unit does not receive data, the timing starts, and during the timing process, it is continuously judged whether the first communication unit has received data. When the time when the unit does not receive data is greater than or equal to the first preset time period, it is considered that the first communication unit or the second communication unit may crash. At this time, the first power supply switch connected to the first communication unit can be controlled by the first controller. The first communication unit is powered off, and the power off can last for a second preset time period, or the wireless power supply transmitting unit can be controlled by the first controller to power off, so that the second communication unit in the power supply receiving module is powered off, the The power-off can last for a third preset duration. The two power-off processes can be performed separately or simultaneously based on judgment. Wherein, in an embodiment, the first preset duration may be set to be less than or equal to 1S. That is, when the interruption time of the received data of the first communication unit is greater than or equal to 1S, the above-mentioned power-off operation is performed. When the interruption time of receiving data of the first communication unit is recovered after less than 1S, the above-mentioned power-off action is not required. And after step S6 is executed, a judgment cycle is ended, and corresponding actions are performed according to the judgment result in the judgment cycle. After the judging cycle ends, the judging action of the next cycle is executed again.

Optionally, in the wireless power supply data transmission method of the present invention, in step S5, the first controller is used to drive the first power supply switch to turn off the second preset time period and/or the enable switch to turn off the third preset time period. ; comprising: driving the first power supply switch to turn off the second preset duration by the first controller, and executing step S6; and when performing step S5 again, driving the enabling switch to turn off the third preset duration by the first controller , and execute step S6. That is, in the judgment period for the first communication unit, the first communication unit may be powered off first based on the judgment result, specifically, when the interruption time of the first communication unit for receiving data is greater than or equal to 1S. The power-off lasts for a second preset time period, and the judgment is performed again after the power-off and restart. That is, when the interruption time of the received data of the first communication unit is less than 1S, the judgment period ends. When the interruption time of the received data of the first communication unit is still greater than or equal to 1S, the wireless power supply transmitting unit is powered off again, so that the second communication unit in the power supply receiving module is powered off, and the power-off continues for the third preset duration.

Optionally, in the wireless power supply data transmission method of the present invention, the second preset duration and the third preset duration are the same duration; in step S7, the first controller drives the first power supply switch to turn off the second preset duration. Setting the duration and/or enabling the switch to turn off the third preset duration includes: driving the first power supply switch and the enabling switch to turn off the same duration at the same time through the first controller. Specifically, the first communication unit and the second communication unit may be powered off at the same time when the interruption time of receiving data of the first communication unit is greater than or equal to 1S.

Through the above circuit and the corresponding control process, it is possible to quickly cause the communication module to crash due to signal interference during the communication process of the communication unit, thereby improving the reliability of the communication process.

It can be understood that the above embodiments only represent the preferred embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the patent of the present invention; In other words, without departing from the concept of the present invention, the above-mentioned technical features can be freely combined, and some deformations and improvements can be made, and these all belong to the protection scope of the present invention; All equivalent transformations and modifications made shall fall within the scope of the claims of the present invention.

Claims (15)

1. A wirelessly powered data transmission circuit, comprising: the power supply transmitting module and the power supply receiving module;

the power supply transmission module includes: the wireless power supply device comprises a first power supply end, a first data end, a wireless power supply transmitting unit, an enabling switch, a first power supply unit, a first power supply switch, a first communication unit and a first controller, wherein the first power supply end is used for being connected with a power supply input; wherein,

the wireless power supply transmitting unit is connected with the first power end through the enabling switch, and the enabling switch is connected with the first controller and used for receiving a control level to be switched on or switched off;

the first power supply unit is connected with the first power supply end, the first communication unit is connected with the first power supply unit through the first power supply switch, and the first power supply switch is connected with the first controller and used for receiving a control level to be switched on or switched off;

the first controller is connected with the first data terminal and the first communication unit and is configured to receive communication data from the first data terminal and send the communication data to the first communication unit or receive communication data from the first communication unit and send the communication data to the first data terminal;

the power supply receiving module includes: the wireless power supply receiving unit is used for receiving the wireless power supply output from the first power supply end, the second power supply switch is used for receiving the wireless power supply output from the second power supply end, and the wireless power supply receiving unit is used for receiving the wireless power supply output from the second power supply end; wherein,

the second power supply unit is connected with the second power supply end, the second communication unit is connected with the second power supply unit through the second power supply switch, and the second power supply switch is connected with the second controller and used for receiving a control level to be switched on or switched off;

the second controller is connected with the second data terminal and the second communication unit and is configured to receive communication data from the second communication unit and send the communication data to the second data terminal or receive communication data from the second data terminal and send the communication data to the second communication unit;

the first communication unit is used for establishing communication connection with the second communication unit.

2. The wirelessly powered data transmission circuit of claim 1, wherein the wirelessly powered transmitting unit comprises: the wireless charging device comprises a wireless transmitting coil H13, a transmitting resonance unit, a wireless charging chip U13, a wireless charging chip U12, a diode D16, a resistor R16 and a resistor R141;

the sixth pin of the wireless charging chip U12 is connected to the enable switch, the fifth pin of the wireless charging chip U12 is connected to the first end of the resistor R141 and the first end of the resistor R16, the second end of the resistor R16 is connected to the cathode of the diode D16, the fourth pin of the wireless charging chip U12 and the first power supply end, the second end of the resistor R141 is connected to the anode of the diode D16, the first pin of the wireless charging chip U12 is connected to the first power supply end, the second pin of the wireless charging chip U12 is connected to the eighth pin of the wireless charging chip U13, the third pin of the wireless charging chip U12 is grounded, the fifth pin, the sixth pin and the seventh pin of the wireless charging chip U13 are grounded, the first pin, the second pin, the third pin and the fourth pin of the wireless charging chip U13 are connected to the first end of the transmitting resonant unit and the first end of the wireless transmitting coil H13, the second end of the transmitting resonant unit is connected to the first power terminal and the second end of the wireless transmitting coil H13.

3. The wirelessly powered data transmission circuit of claim 2, wherein the enable switch comprises a switch transistor Q13, a resistor R18, a resistor R19, and a resistor R126; the first end of the switch tube Q13 is connected with the first end of the resistor R18 and the first end of the received resistor R19, the second end of the switch tube Q13 is grounded with the second end of the resistor R19, the second end of the resistor R18 is connected with the first controller, the third end of the switch tube Q13 is connected with the first end of the resistor R126 and the sixth pin of the wireless charging chip U12, and the second end of the resistor R126 is connected with the first power supply end.

4. The wirelessly powered data transmission circuit of claim 1, wherein the first power switch comprises: the switch tube Q11, the switch tube Q12, the resistor R110, the resistor R17, the resistor R1 and the resistor R14;

the second end of the switch tube Q11 is connected with the first power supply unit and the first end of the resistor R1, the first end of the switch tube Q11 is connected with the second end of the resistor R1 and the first end of the resistor R14, the third end of the switch tube Q11 is connected with the first communication unit, the second end of the resistor R14 is connected with the second end of the switch tube Q12, the first end of the switch tube Q12 is connected with the first end of the resistor R17 and the first end of the resistor R110, the second end of the resistor R17 is connected with the first controller, and the second end of the resistor R110 and the third end of the switch tube Q12 are both grounded.

5. The wirelessly powered data transmission circuit of claim 4, wherein the first power supply unit includes a power supply chip U11;

the first pin of the power supply chip U11 is grounded, the second pin and the fourth pin of the power supply chip U11 are connected to the second end of the switch tube Q12, and the third pin of the power supply chip U11 is connected to the first power supply end.

6. The wirelessly powered data transmission circuit of claim 4, wherein the first communication unit comprises a switch transistor Q18, a switch transistor Q110, a resistor R135, a resistor R139 and a communication chip M12, and a communication antenna ANT11 connected to the communication chip M12; wherein,

the second end of the switch tube Q18 is connected with the CLK end of the communication chip M12 and the first end of the resistor R135, the first end of the switch tube Q18 is connected with the second end of the resistor R135 and the third end of the switch tube Q11, and the third end of the switch tube Q18 is connected with the first controller;

the second end of the switching tube Q110 is connected to the DATA end of the communication chip M12 and the first end of the resistor R139, the first end of the switching tube Q110 is connected to the second end of the resistor R139 and the third end of the switching tube Q11, and the third end of the switching tube Q110 is connected to the first controller.

7. The wirelessly powered data transmission circuit of claim 1, wherein the wirelessly powered receiving unit comprises: the wireless charging device comprises a wireless receiving coil H21, a receiving resonance unit, a wireless charging chip U23, a voltage regulator tube D218, a diode D214, a diode D216, an inductor L21, a resistor R289, a resistor R290 and a resistor R291;

a first end of the wireless receiving coil H21 is connected to a first end of the receiving resonant unit and grounded, a second end of the wireless receiving coil H21 is connected to a second end of the receiving resonant unit and an anode of the diode D213, a cathode of the diode D213 is connected to a cathode of the voltage regulator D218, a second pin of the wireless charging chip U23 and a first end of the resistor R289, a second end of the resistor R289 is connected to a seventh pin of the wireless charging chip U23, a third pin of the wireless charging chip U23 is connected to a cathode of the diode D216 and a first end of the inductor L21, an anode of the voltage regulator D218, an anode of the diode D216 and a fourth pin of the wireless charging chip U23 are grounded, a second end of the inductor L21 is connected to the second power supply terminal, a fifth pin of the wireless charging chip U23 is connected to a first end of the resistor R290 and a first end of the resistor R291, the second terminal of the resistor R290 is connected to the second power source terminal, and the second terminal of the resistor R291 is grounded.

8. The wirelessly powered data transmission circuit of claim 1, wherein the second power switch comprises a switch transistor Q21, a switch transistor Q22, a resistor R21, a resistor R24, a resistor R210, and a resistor R7;

the second end of the switch tube Q21 is connected to the second power supply unit and the first end of the resistor R21, the first end of the switch tube Q21 is connected to the second end of the resistor R21 and the first end of the resistor R24, the third end of the switch tube Q21 is connected to the second communication unit, the second end of the resistor R24 is connected to the second end of the switch tube Q22, the first end of the switch tube Q22 is connected to the first end of the resistor R7 and the first end of the resistor R210, the third end of the switch tube Q22 and the second end of the resistor R210 are grounded, and the second end of the resistor R7 is connected to the second controller.

9. The wirelessly powered data transmission circuit of claim 8, wherein the second power supply unit comprises a power supply chip U21, the first pin of the power supply chip U21 is grounded, the second pin and the fourth pin of the power supply chip U21 are both connected to the second terminal of the switch transistor Q21, and the third pin of the power supply chip U21 is connected to the second power supply terminal.

10. The wirelessly powered data transmission circuit of claim 8, wherein the second communication unit comprises a switch Q28, a switch Q210, a resistor R235, a resistor R239, a communication chip M22, and a communication antenna ANT21 connected to the communication chip M22; wherein,

the second end of the switch tube Q28 is connected with the CLK end of the communication chip M22 and the first end of the resistor R235, the first end of the switch tube Q28 is connected with the second end of the resistor R235 and the third end of the switch tube Q21, and the third end of the switch tube Q28 is connected with the second controller;

the second end of the switching tube Q210 is connected to the DATA end of the communication chip M22 and the first end of the resistor R239, the first end of the switching tube Q210 is connected to the second end of the resistor R239 and the third end of the switching tube Q21, and the third end of the switching tube Q210 is connected to the second controller.

11. Wirelessly powered data transmission circuitry according to claim 1,

the power supply transmitting module further comprises a connector CON11, and the first power terminal and the first data terminal are both connected to the connector CON 11; and/or

The power receiving module further includes a connector CON21, and the second power terminal and the second data terminal are both connected to the connector CON 21.

12. A communication system comprising the wirelessly powered data transmission circuit according to any one of claims 1 to 11, wherein the communication system comprises a first communication device and a second communication device, the power supply transmission module is provided to the first communication device, and the power supply reception module is provided to the second communication device.

13. A wireless power supply data transmission method applied to the wireless power supply data transmission circuit according to any one of claims 1 to 11, comprising:

s1, monitoring the received data from the second communication unit, which is received by the first communication unit, by the first controller in the process of the communication between the first communication unit and the second communication unit;

s2, determining whether the first communication unit has the received data, if yes, performing the step S1, and if no, performing the step S3;

s3, starting timing to obtain the continuous time length of the first communication unit without the received data, and continuously confirming whether the received data exists when the continuous time length is less than a first preset time length, if so, executing S1, and if not, executing S4;

s4, continuing to count time to update the continuous time length until the continuous time length is greater than or equal to the first preset time length;

s5, driving the first power supply switch to be turned off for a second preset time and/or driving the enable switch to be turned off for a third preset time through the first controller;

and S6, clearing the timer and executing the step S1.

14. The method according to claim 13, wherein in the step S5, the first power switch is driven to be turned off by the first controller for a second preset time period and/or the enable switch is driven to be turned off for a third preset time period; the method comprises the following steps:

driving the first power supply switch to turn off the second preset time length through the first controller, clearing the timer and executing the step S1 and the following steps;

and when the step S5 is executed again, the enable switch is driven to be turned off for the third preset time period by the first controller, and the step S6 is executed.

15. The wirelessly powered data transmission method of claim 13,

the second preset time length and the third preset time length are the same time length;

in the step S5, the first power supply switch is driven to be turned off for a second preset time period and/or the enable switch is driven to be turned off for a third preset time period by the first controller; the method comprises the following steps:

and driving the first power supply switch and the enabling switch to be simultaneously turned off for the same duration through the first controller.

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