A wire controller power supply and communication circuit and system

Abstract

The present application provides a wire controller power supply and communication circuit and system. The wire controller power supply and communication circuit includes: a main control board, a wire controller, and a two-core bus. The two-core bus is connected between the main control board and the wire controller and is used for communication between the main control board and the wire controller and for supplying voltage to the wire controller. The two-core bus includes a first bus and a second bus. One end of the first bus and one end of the second bus are respectively connected to the main control board, and the other end of the first bus and the other end of the second bus are respectively connected to the wire controller. In the present application, communication sending and receiving information are superimposed on the power line. The connection between the main control board and the wire controller uses a two-core bus, and there is no polarity requirement for the two-core bus, so it can be connected to the main control board and the wire controller without polarity, improving the wiring efficiency of the circuit and reducing costs.

Description

Technical Field

[0001] This application belongs to the technical field of air conditioner control, and relates to a power supply and communication circuit for a wired controller, in particular to a power supply and communication circuit and system for a wired controller. Background Art

[0002] In an electric control system such as a household appliance, generally, the main control board supplies power to the wired controller, and there is a communication line for exchanging communication data with the wired controller. The commonly used connection line is a 4-core connection, where 2 cores are for the power supply and 2 cores are for communication connection.

[0003] Currently, there is also a two-core non-polar connection method. Although it can achieve two-core communication and power supply alternation between the indoor unit and the wired controller of an electric control system such as an air conditioner, it requires an integrated IC chip and a matching peripheral circuit or the addition of a controllable switch and a relay, etc. Moreover, the powers of various wired controllers are not the same, and corresponding peripheral devices need to be matched for the wired controller. The selection of peripheral circuit devices is strict, which limits the power of the wired controller. Summary of the Invention

[0004] The purpose of this application is to provide a power supply and communication circuit and system for a wired controller, which is used to solve the problems that the connection of the wired controller in the prior art is too complex and the communication and power supply need to be alternated.

[0005] In the first aspect, this application provides a power supply and communication circuit for a wired controller. The power supply and communication circuit for a wired controller includes: a main control board, a wired controller, and a two-core bus; the two-core bus is connected between the main control board and the wired controller and is used for communication between the main control board and the wired controller and providing voltage to the wired controller; the two-core bus includes a first bus and a second bus. One end of the first bus and one end of the second bus are respectively connected to the main control board, and the other end of the first bus and the other end of the second bus are respectively connected to the wired controller.

[0006] In this application, the communication sending and receiving information are superimposed on the power line, the connection line between the main control board and the wired controller is simplified to a two-core connection, and the polarity requirement is cancelled. The two-core line can be connected arbitrarily, improving the wiring efficiency.

[0007] In an implementation manner of the first aspect, the main control board includes: a first sending module, a first power supply and communication module, and a first receiving module; the first sending module is used to send the main control board communication signal; the first power supply and communication module is connected to the first sending module and is used to receive the main control board communication signal, provide a power supply voltage to the wired controller, and send the main control board communication signal; the first receiving module is respectively connected to the first sending module and the second bus and is used to receive the wired controller communication signal sent by the wired controller.

[0008] Specifically, the power supply voltage is the voltage of the wiring port where the two-core bus is connected to the main control board.

[0009] In an implementation manner of the first aspect, the first power supply and communication module includes: a power supply for supplying power to the line controller; a first triode, the emitter of the first triode is connected to the power supply, the collector of the first triode is connected to the first bus; a second triode, the collector of the second triode is connected to the base of the first triode, the base of the second triode is connected to the first sending module, and the emitter of the second triode is grounded; a first diode and a second diode, the cathode of the first diode is connected to the anode of the second diode, the anode of the first diode is connected to the power supply, and the cathode of the second diode is connected to the first bus; when the first sending module sends a high-level communication signal, the second triode conducts, the first triode conducts, and the power supply voltage is provided to the line controller through the first triode; when the first sending module sends a low-level communication signal, the second triode and the first triode are turned off, and the power supply voltage is provided to the line controller through the first diode and the second diode.

[0010] In an implementation manner of the first aspect, the first receiving module includes a comparator; the comparator is used to compare the power supply voltage with a preset voltage. When the power supply voltage is greater than the preset voltage, the first receiving module receives a high level. When the power supply voltage is less than the preset voltage, the first receiving module receives a low level.

[0011] In an implementation manner of the first aspect, the line controller includes: a second sending module for sending line controller communication signals; a second power supply and communication module connected to the second sending module for receiving and sending line controller communication signals to the main control board; the second power supply and communication module includes a power conversion element for converting the power supply into the power required by the line controller; a second receiving module connected to the two-core bus and the second power supply and communication module for receiving the main control board communication signals sent by the main control board.

[0012] In an implementation of the first aspect, the second power supply and communication module further includes: a third triode, the emitter of the third triode is grounded; a level conversion element, the collector of the level conversion element is connected to the third triode, the emitter of the level conversion element is grounded, the base of the level conversion element is connected to the second transmission module, the collector of the level conversion element is also connected to a pull-up resistor and connected to a voltage source; when the second transmission module sends a low-level communication signal, the low-level communication signal is converted into a high-level communication signal through the level conversion element, the third triode is turned on, and the voltage provided by the main control board decreases; when the second transmission module control unit sends a high-level communication signal, the high-level communication signal is converted into a low-level communication signal through the level conversion element, the third triode is turned off, and the voltage provided by the main control board remains unchanged.

[0013] In an implementation of the first aspect, the remote controller further includes a rectification unit and a third diode; the rectification unit is respectively connected to the first bus, the second bus, the anode of the third diode, and the second receiving module for transmitting communication signals; the cathode of the third diode is respectively connected to the second power supply and communication module and the second receiving module.

[0014] In an implementation of the first aspect, the remote controller further includes a detection module; one end of the detection module is connected between the rectification unit and the anode of the third diode for measuring the communication voltage; the other end of the detection module is connected to the cathode of the third diode for measuring the normal voltage; the detection module is further configured to compare the communication voltage and the normal voltage. When the communication voltage is greater than the normal voltage, the second receiving module receives a high level, and when the communication voltage is less than the normal voltage, the second receiving module receives a low level.

[0015] In a second aspect, the present application provides a remote controller power supply and communication system, and the remote controller power supply and communication system includes the remote controller power supply and communication circuit according to any one of the first aspect.

[0016] As described above, the remote controller power supply and communication circuit and system of the present application have the following beneficial effects:

[0017] By using a two-core bus to connect the main control board and the remote controller, superimposing communication transmission and reception information on the power line, and connecting the rectification unit on the remote controller to the two-core bus, a non-polar connection can be achieved between the main control board and the remote controller for the two-core connection. There is no non-polarity requirement for the two-core bus, which improves the wiring efficiency of the circuit and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It shows a schematic diagram of the power supply and communication circuit structure of the remote controller described in the embodiments of the present application.

[0019] Figure 2 It shows a schematic diagram of the partial structure of the main control board described in the embodiments of the present application.

[0020] Figure 3 It shows a schematic diagram of the partial structure of the remote controller described in the embodiments of the present application.

[0021] Figure 4 It shows a schematic diagram of the power supply and communication circuit structure of the remote controller described in the embodiments of the present application.

[0022] Figure 5 It shows a schematic diagram of the power supply and communication system structure of the remote controller described in the embodiments of the present application.

[0023] Description of component labels

[0024] 100 Remote controller power supply and communication system

[0025] 1 Main control board

[0026] 11 First sending module

[0027] 12 First power supply and communication module

[0028] 13 First receiving module

[0029] 2 Remote controller

[0030] 21 Second sending module

[0031] 22 Second power supply and communication module

[0032] 23 Second receiving module

[0033] 24 Detection module

[0034] 3 Two-core bus

[0035] 31 First bus

[0036] 32 Second bus Detailed implementation manners

[0037] The following uses specific specific examples to illustrate the implementation manners of the present application. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. The present application can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0038] It should be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present application in a schematic manner. Therefore, only the components related to the present application are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0039] The following embodiments of the present application provide a power supply and communication circuit and system for a remote controller 2. By using a two-core bus 3 to connect the main control board 1 and the remote controller 2, and superimposing the communication sending and receiving information on the power line, the rectifying unit on the remote controller 2 is connected to the two-core bus 3, which can achieve arbitrary connection of the two-core connection, without polarity requirements for the two-core bus 3, and solves the problems of overly complex connection of the remote controller 2 and the need for alternating communication and power supply in the prior art.

[0040] The following will elaborate in detail the principle and implementation manner of a power supply and communication circuit and system for a remote controller in this embodiment, so that those skilled in the art can understand the power supply and communication circuit and system for the remote controller 2 in this embodiment without creative labor.

[0041] Please refer to Figure 1 , which shows the schematic structural diagram of the power supply and communication circuit for the remote controller described in the embodiment of the present application. As Figure 1 shown, the power supply and communication circuit for the remote controller 2 includes: a main control board 1, a remote controller 2, and a two-core bus 3; the two-core bus 3 is connected between the main control board 1 and the remote controller 2, and is used for communication between the main control board 1 and the remote controller 2 and providing voltage to the remote controller 2; the two-core bus 3 includes a first bus 31 and a second bus 32, one end of the first bus 31 and one end of the second bus 32 are respectively connected to the main control board 1; the other end of the first bus 31 and the other end of the second bus 32 are respectively connected to the remote controller 2.

[0042] It should be noted that in this embodiment, the communication sending and receiving information is superimposed on the power line, the connection line between the main control board 1 and the remote controller 2 is simplified to a two-core connection, and the polarity requirement is cancelled. The two-core line can be arbitrarily connected, improving the wiring efficiency.

[0043] Please refer to Figure 2 , which shows the schematic structural diagram of the main control board part of the embodiment of the present application. As Figure 2 shown, the main control board 1 includes: a first sending module 11, a first power supply and communication module 12, and a first receiving module 13; the first sending module 11 is used for outputting the communication signal of the main control board 1; the first power supply and communication module 12 is connected to the first sending module 11, and is used for receiving the communication signal of the main control board 1 and providing a power supply voltage to the remote controller 2 and sending the communication signal of the main control board 1; the first receiving module 13 is respectively connected to the first sending module 11 and the second bus 32, and is used for receiving the communication signal of the remote controller 2 sent by the remote controller 2.

[0044] Specifically, the power supply voltage is the voltage of the wiring port where the two-core bus 3 is connected to the main control board 1.

[0045] In one embodiment, the first power supply and communication module 12 includes: a power supply V1, a resistor R1, a resistor R2, a first triode Q1, a second triode Q2, a first diode D1, and a second diode D2.

[0046] Specifically, the power supply V1 is used to supply power to the remote controller 2. One end of the resistor R1 is connected to the power supply V1, and the other end of the resistor R1 is respectively connected to the emitter of the first triode Q1 and the anode of the first diode D1. The collector of the first triode Q1 is connected to the first bus 31. The base of the first triode Q1 is connected to one end of the resistor R2, and the other end of the resistor R2 is connected to the collector of the second triode Q2. The base of the second triode Q2 is connected to the first sending module 11. The emitter of the second triode Q2 is grounded. The cathode of the first diode D1 is connected to the anode of the second diode D2, and the cathode of the second diode D2 and the collector of the first triode Q1 are commonly connected to the first bus 31.

[0047] Specifically, when the first sending module 11 sends a high-level communication signal, the second triode Q2 is turned on, and the first triode Q1 is turned on. The power supply voltage is provided to the remote controller 2 through the first triode Q1. When the first sending module 11 sends a low-level communication signal, the second triode Q2 and the first triode Q1 are turned off, and the power supply voltage is provided to the remote controller 2 through the first diode D1 and the second diode D2.

[0048] It should be noted that a resistor is connected in series to the base of the second triode Q2, and a resistor is connected in parallel between the base and the emitter of the second triode Q2 to prevent the triode from being misoperated due to noise interference, making it effectively grounded and reliably cut off.

[0049] In one embodiment, the main control board 1 further includes a resistor R3 and a resistor R4. Specifically, one end of the resistor R3 is commonly connected to the first bus 31 together with the cathode of the second diode D2 and the collector of the first triode Q1. The other end of the resistor R3 is connected to one end of the resistor R4, and the other end of the resistor R4 is grounded together with the second bus 32.

[0050] In one embodiment, the first receiving module 13 includes: a comparator U1, a capacitor C1, a resistor R5, a resistor R6, a resistor R7, and a resistor R8.

[0051] Specifically, one end of resistor R5 is connected to one end of resistor R4, and the other end of resistor R5 is connected to the positive input terminal, i.e., the 3rd interface, of comparator U1. The negative input terminal, i.e., the 4th interface, of comparator U1 is respectively connected to one end of resistor R6 and one end of resistor R7. The 5th interface of comparator U1 is connected to a power supply V3, the 2nd interface of comparator U1 is grounded, the 1st interface of comparator U1 is connected to one end of resistor R8, and the 1st interface of comparator U1 and one end of resistor R8 are commonly connected to the output port. The other end of resistor R6 is connected to a power supply V2, the other end of resistor R7 is grounded, the other end of resistor R8 is connected to a power supply V4, one end of capacitor C1 and the 5th interface of comparator U1 are commonly connected to power supply V3, and the other end of capacitor C1 is grounded.

[0052] Specifically, comparator U1 is used to compare the supply voltage with a preset voltage. When the supply voltage is greater than the preset voltage, the first receiving module 13 receives a high level. When the supply voltage is less than the preset voltage, the first receiving module 13 receives a low level.

[0053] Please refer to Figure 3 , which shows a schematic structural diagram of the remote controller part of this application embodiment. As Figure 3 shown, the remote controller 2 includes: a second sending module 21, which is used to output the communication signal of the remote controller 2; a second power supply communication module 22, connected to the second sending module 21, which is used to receive and send the communication signal of the remote controller 2 to the main control board 1; the second power supply communication module 22 is used to convert the power supply into the power supply required by the remote controller 2; a second receiving module 23, connected to the two-core bus 3 and the second power supply communication module, which is used to receive the communication signal of the main control board 1 sent by the main control board 1.

[0054] In one embodiment, the second power supply communication module 22 further includes: an electrolytic capacitor E1, an electrolytic capacitor E2, a power conversion element, a third triode Q3, a capacitor C2, a resistor R9, a level conversion element Q4, and a resistor R15.

[0055] Specifically, the emitter of the third triode Q3 is grounded, the collector of the third triode Q3 is connected to one end of the resistor R9, the other end of the resistor R9 is connected to the rectification unit, the input end of the power conversion unit U2 is respectively connected to the cathode of the third diode D3 and one end of the electrolytic capacitor E1, the output end of the power conversion unit U2 is respectively connected to one end of the capacitor C2 and one end of the electrolytic capacitor E2, the grounding end of the power conversion unit U2, the other end of the capacitor C2, and the other end of the electrolytic capacitor E2 are commonly grounded, one end of the electrolytic capacitor is connected to a power supply V5, the other end of the electrolytic capacitor E1 is grounded, the cathode of the third diode D3 is connected to the second receiving module 23, and the anode of the third diode D3 and the other end of the resistor R9 are commonly connected to the rectification unit. The rectification unit is respectively connected to the first bus 31, the second bus 32, the anode of the third diode D3 and the other end of the resistor R9, and the second receiving module 23; the collector of the level conversion element Q4 is connected to the third triode Q3, the emitter of the level conversion element Q4 is grounded, the base of the level conversion element Q4 is connected to the second sending module 21, the collector of the level conversion element Q4 is also connected to a pull-up resistor R15 and is connected to a voltage source (+5V).

[0056] Specifically, when the second sending module 21 sends a low-level communication signal, the low-level communication signal is converted into a high-level communication signal by the level conversion element Q4, the third triode Q3 is turned on, and the voltage provided by the main control board 1 decreases; when the second sending module 21 sends a high-level communication signal, the high-level communication signal is converted into a low-level communication signal by the level conversion element Q4, the third triode Q3 is turned off, and the voltage provided by the main control board 1 remains unchanged.

[0057] In one embodiment, the second receiving module 23 includes: a comparator U2, a capacitor C3, a resistor R10, a resistor R11, a resistor R12, a resistor R13, and a resistor R14.

[0058] Specifically, one end of the resistor R11 is connected to the anode of the third diode D3, the other end of the resistor R11 is connected to one end of the resistor R12, and one end of the resistor R11 and one end of the resistor R12 are commonly connected to the positive input terminal 3 of the comparator U2. The other end of the resistor R12 is grounded. One end of the resistor R10 is connected to the cathode of the third diode D3, the other end of the resistor R10 and one end of the resistor R13 are commonly connected to the negative input terminal 4 of the comparator U2. The other end of the resistor R13 is grounded. The 2 terminal of the comparator U2 is grounded. The 5 terminal of the comparator U2 is connected to a power supply V6. The 1 terminal of the comparator U2 is connected to one end of the resistor R14, and the 1 terminal of the comparator U2 and one end of the resistor R14 are commonly connected to RXD2. One end of the capacitor C3 and the 5 terminal of the comparator U2 are commonly connected to the power supply V6. The other end of the capacitor C3 is grounded. The other end of the resistor R14 is connected to a power supply V7.

[0059] Please refer to Figure 4 , the remote controller 2 further includes a detection module 24; one end of the detection module 24 is connected between the rectification unit and the anode of the third diode D3 for measuring the communication voltage; the other end of the detection module 24 is connected to the cathode of the third diode D3 for measuring the normal voltage; the detection module 24 is further configured to compare the communication voltage and the normal voltage. When the communication voltage is greater than the normal voltage, the second receiving module 23 receives a high level. When the communication voltage is less than the normal voltage, the second receiving module 23 receives a low level.

[0060] Specifically, compare the communication voltage with the normal voltage: among them, the calculation formula for the communication voltage is: communication voltage P1 = supply voltage - rectifier bridge voltage drop - connecting wire resistance voltage drop; the calculation formula for the normal voltage is: normal voltage P2 = supply voltage high level - rectifier bridge voltage drop - connecting wire resistance voltage drop – 0.7V; when the communication measurement voltage P1 is greater than the normal voltage P2, RXD2 receives a high level; when the communication measurement voltage P1 is less than the normal voltage P2, RXD2 receives a low level.

[0061] Please refer to Figure 4 , which shows a schematic structural diagram of the power supply communication circuit of the remote controller 2 according to the embodiment of the present application.

[0062] Taking the main control board 1 providing 12V voltage to the remote controller 2 and the 12V current required by the remote controller 2 being 20 - 50mA as an example, the power conversion element on the remote controller 2 converts the power supply into a 5V power supply.

[0063] When the main control board 1 communicates and sends, when the second triode Q2 is turned on, the first triode Q1 is turned on, and the power supply is carried out through the first triode Q1, and the supply voltage is a high voltage of 11.0 - 11.6V; when the second triode Q2 is not turned on, the first triode Q1 is not turned on, and the power supply goes through the first diode D1 and the second diode D2 in a second loop, and the supply voltage becomes a low voltage of 9.6 - 10.2V due to the diode voltage drop. The main control board 1 can obtain the communication reception signal through the first receiving module 13 according to the change of the supply voltage. The comparison voltage in the circuit is designed to be 10.48V. When the supply voltage is greater than 10.48V, RXD1 of the first receiving module 13 receives a high level; when the supply voltage is less than 10.48V, RXD1 of the first receiving module 13 receives a low level.

[0064] When the line controller 2 communicates and sends, the second triode Q2 on the main control board 1 remains conducting. When the third triode Q3 on the line controller 2 is non-conducting, the supply voltage remains at a high voltage of 11.0 - 11.6V; when the third triode Q3 is conducting, the current of the line controller 2 increases, resulting in an increased voltage drop across the resistor R1 and the supply voltage drops to less than 10.0V; the line controller 2 compares the communication voltage and the normal voltage through the detection module 24. When the communication voltage is greater than the normal voltage, the output port of the second receiving module 23 receives a high level; when the communication voltage is less than the normal voltage, the RXD2 of the second receiving module 23 receives a low level.

[0065] Please refer to Figure 5 , which shows a schematic structural diagram of the line controller power supply and communication system 100 according to an embodiment of the present application. As Figure 5 shown, the line controller 2 power supply and communication system includes: a first bus 31 and a second bus 32. One end of the first bus 31 and one end of the second bus 32 are respectively connected to the main control board 1; the other end of the first bus 31 and the other end of the second bus 32 are respectively connected to the line controller 2; the first bus 31 and the second bus 32 are used for communication between the main control board 1 and the line controller 2 and for supplying voltage to the line controller 2; a first sending module 11, for outputting the main control board 1 communication signal; a first power supply and communication module 12, connected to the first sending module 11, for receiving the main control board 1 communication signal and supplying power voltage to the line controller 2 and sending the main control board 1 communication signal; a first receiving module 13, respectively connected to the first sending module 11 and the second bus 32, for receiving the line controller 2 communication signal sent by the line controller 2; a second sending module 21, for outputting the line controller 2 communication signal; a second power supply and communication module 22, connected to the second sending module 21, for receiving and sending the line controller 2 communication signal to the main control board 1; the second power supply and communication module 22 includes a power conversion element, and the power conversion element is used for converting the power supply into the power supply required by the line controller 2; a second receiving module 23, connected to the two-core bus 3 and the second power supply and communication module, for receiving the main control board 1 communication signal sent by the main control board 1; a detection module 24, one end of the detection module 24 is connected between the rectifying unit and the anode of the third diode D3, for measuring the communication voltage; the other end of the detection module 24 is connected to the cathode of the third diode D3, for measuring the normal voltage; the detection module 24 is also used for comparing the communication voltage and the normal voltage. When the communication voltage is greater than the normal voltage, the second receiving module 23 receives a high level, and when the communication voltage is less than the normal voltage, the second receiving module 23 receives a low level.

[0066] The descriptions of the processes or structures corresponding to the above respective drawings have their own focuses. For parts not detailed in a certain process or structure, reference can be made to the relevant descriptions of other processes or structures.

[0067] The above embodiments are only illustrative of the principles and effects of the present application and are not intended to limit the present application. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in the present application should still be covered by the claims of the present application.

Claims

1. A wire controller power supply and communication circuit, characterized in that, Including: The main control board, the wire controller and the two-core bus; The two-core bus is connected between the main control board and the wire controller, and is used for communication between the main control board and the wire controller and providing voltage to the wire controller; The two-core bus includes a first bus and a second bus. One end of the first bus and one end of the second bus are respectively connected to the main control board; the other end of the first bus and the other end of the second bus are respectively connected to the wire controller; The main control board includes a first power supply communication module for providing voltage to the wire controller; The first power supply communication module includes: A power supply for supplying power to the wire controller; A first triode, the emitter of the first triode is connected to the power supply, and the collector of the first triode is connected to the first bus; A second triode, the collector of the second triode is connected to the base of the first triode, the base of the second triode is connected to the first sending module, and the emitter of the second triode is grounded; A first diode and a second diode, the cathode of the first diode is connected to the anode of the second diode, the anode of the first diode is connected to the power supply, and the cathode of the second diode is connected to the first bus; When the first sending module sends a high-level communication signal, the second triode conducts, the first triode conducts, and the power supply voltage is provided to the wire controller through the first triode; when the first sending module sends a low-level communication signal, the second triode and the first triode are turned off, and the power supply voltage is provided to the wire controller through the first diode and the second diode.

2. The wire controller power supply and communication circuit according to claim 1, characterized in that, The main control board includes: A first sending module for sending main control board communication signals; A first power supply communication module, connected to the first sending module, for receiving the main control board communication signals, providing a power supply voltage to the wire controller and sending the main control board communication signals; A first receiving module, respectively connected to the first sending module and the second bus, for receiving the wire controller communication signals sent by the wire controller.

3. The power supply and communication circuit of the remote controller according to claim 2, characterized in that, The power supply voltage is the voltage of the wiring port where the two-core bus is connected to the main control board.

4. The power supply and communication circuit of the remote controller according to claim 2, wherein The first receiving module includes a comparator; The comparator is used to compare the power supply voltage with a preset voltage. When the power supply voltage is greater than the preset voltage, the first receiving module receives a high level. When the power supply voltage is less than the preset voltage, the first receiving module receives a low level.

5. The line controller power supply and communication circuit according to claim 1, wherein The wire controller includes: A second sending module for sending wire controller communication signals; A second power supply communication module, connected to the second sending module, for receiving and sending wire controller communication signals to the main control board, and converting the voltage into the power supply required by the wire controller; A second receiving module, connected to the two-core bus and the second power supply communication module, for receiving the main control board communication signals sent by the main control board.

6. The line controller power supply and communication circuit according to claim 5, characterized in that: The second power supply communication module includes: A third triode, the emitter of the third triode is grounded; A level conversion component, the collector of the level conversion component is connected to the third triode, the emitter of the level conversion component is grounded, the base of the level conversion component is connected to the second transmission module, and the collector of the level conversion component is also connected to a pull-up resistor and connected to a voltage source; When the second transmission module sends a low-level communication signal, the low-level communication signal is converted into a high-level communication signal through the level conversion component, the third triode conducts, and the voltage provided by the main control board decreases; when the second transmission module sends a high-level communication signal, the high-level communication signal is converted into a low-level communication signal through the level conversion component, the third triode turns off, and the voltage provided by the main control board remains unchanged.

7. The wire controller power supply and communication circuit according to claim 5, characterized in that, The remote controller further includes a rectification unit and a third diode; The rectification unit is respectively connected to the first bus, the second bus, the anode of the third diode, and the second receiving module for transmitting communication signals; The cathode of the third diode is respectively connected to the second power supply communication module and the second receiving module.

8. The line controller power supply and communication circuit according to claim 7, characterized in that: The remote controller further includes a detection module; One end of the detection module is connected between the rectification unit and the anode of the third diode for measuring the communication voltage; The other end of the detection module is connected to the cathode of the third diode for measuring the normal voltage; The detection module is further used to compare the communication voltage and the normal voltage. When the communication voltage is greater than the normal voltage, the second receiving module receives a high level. When the communication voltage is less than the normal voltage, the second receiving module receives a low level.

9. A wired controller power supply and communication system, characterized in that, The remote controller power supply communication system includes the remote controller power supply communication circuit according to any one of claims 1 to 8.

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