Line detection control system and method

Abstract

An embodiment of the present invention relates to a line detection control system and method, the system comprising: a power supply module, a correction switch group, a neutral line detection module, a system control module, a neutral line selection module and a power supply control module; the three input ends of the power supply module and the three input ends of the correction switch group are respectively connected to a first node, a second node and a third node, and the three output ends of the power supply module are respectively connected to the three ends of the power supply control module; the first output end of the correction switch group is connected to the input end of the neutral line detection module and the first input end and the first detection point of the neutral line selection module, the second output end is connected to the second input end and the second monitoring point of the neutral line selection module, and the third output end is connected to the output end of the neutral line selection module and the third detection point; the output end of the neutral line detection module is connected to the input end of the system control module; thereby, the line identification detection and control effects of the neutral, live and communication lines of the equipment in the system can be achieved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of connecting neutral, live, and communication lines of electrical equipment, and in particular to a line detection control system and method. Background Art

[0002] With economic development, various household appliances are gradually entering people's homes. Air conditioners are among the most widely used household appliances. Most air conditioners consist of an indoor unit and an outdoor unit, which communicate with each other to achieve complex functions. For example, variable-frequency air conditioners need to change the operating frequency of the outdoor unit's compressor according to different operating conditions, which requires frequent communication between the indoor and outdoor units.

[0003] Because the indoor and outdoor units are far apart and subject to numerous interferences, a three-wire system is often used to ensure normal communication between them. This system uses a neutral wire, a live wire, and a communication line to form a half-duplex asynchronous serial communication interface. This type of communication is secure, reliable, and low-cost.

[0004] Generally, the outdoor unit is powered by the indoor unit. However, during the installation process, there is a possibility that the neutral, live, and communication lines of the outdoor unit are connected incorrectly. Once connected incorrectly, the outdoor unit cannot start normally, and may even damage the air conditioning components and cause risks such as leakage. Summary of the Invention

[0005] In view of this, in order to solve the technical problem of incorrect connection of neutral, live and communication lines of the above-mentioned equipment, an embodiment of the present invention provides a line detection control system and method.

[0006] In a first aspect, an embodiment of the present invention provides a line detection and control system, comprising:

[0007] Power supply module, adjustment switch group, neutral line detection module, system control module, neutral line selection module and power supply control module;

[0008] The first input terminal of the power supply module is connected to the first node, the second input terminal is connected to the second node, the third input terminal is connected to the third node, the first output terminal is connected to the first terminal of the power control module, the second output terminal is connected to the second terminal of the power control module, and the third output terminal is connected to the third terminal of the power control module;

[0009] The first input terminal of the regulating switch group is connected to the first node, the second input terminal is connected to the second node, the third input terminal is connected to the third node, the first output terminal of the regulating switch group is connected to the first detection point, the second output terminal is connected to the second detection point, and the third output terminal is connected to the third detection point;

[0010] The input end of the zero line detection module is connected to the first detection point, and the output end is connected to the input end of the system control module;

[0011] The first input terminal of the neutral line selection module is connected to the first detection point, the second input terminal is connected to the second detection point, and the output terminal is connected to the third detection point.

[0012] In one possible implementation, the power supply module is used to provide a stable voltage source to the system;

[0013] The input end of the adjustment switch group is connected to the power supply module for inputting the voltage source provided by the system, and the output end is connected to the neutral line detection module and the neutral line selection module for outputting the detection signal representing the neutral line and the live line to the neutral line detection module, and at the same time detecting the detection signal representing the communication line, and providing the detection signal representing the communication line to the neutral line selection module;

[0014] The neutral line detection module is used to identify and detect the neutral line and the live line;

[0015] The neutral line selection module is used to connect the neutral line after identification and detection, and provide a voltage source for the internal circuit of the system;

[0016] The power control module is connected to the power module and is used to control the power voltage generated by the power module;

[0017] The system control module is connected to the zero line detection module and the zero line selection module, and is used to control the start and end of the zero line detection, and control the zero line selection module to perform zero line selection processing.

[0018] In a possible implementation, the power module includes: a first power module, a second power module, and a third power module;

[0019] The first input terminal of the first power supply module is connected to the first node as the first input terminal of the power supply module, the second input terminal is connected to the second node as the second input terminal of the power supply module, and the first signal output terminal is connected to the first terminal of the power control module as the first output terminal of the power supply module;

[0020] The first input terminal of the second power supply module is connected to the first node, the second input terminal is connected to the third node as the third input terminal of the power supply module, and the second signal output terminal is connected to the second terminal of the power supply control module as the second output terminal of the power supply module;

[0021] The first input end of the third power supply module is connected to the second node, the second input end is connected to the third node, and the third signal output end is connected to the third end of the power control module as the third output end of the power supply module.

[0022] In a possible implementation, the first power module includes: a first relay, a first power frequency transformer, a first rectifier and filter unit, and a first voltage division detection unit electrically connected in sequence;

[0023] The first input terminal of the first relay is connected to the first node as the first input terminal of the first power module, the second input terminal of the first relay is connected to the second node as the second input terminal of the first power module, and the output terminal of the first voltage division detection unit is connected to the first terminal of the power control module as the first signal output terminal of the first power module;

[0024] The second power supply module includes: a second relay, a second power frequency transformer, a second rectifier and filter unit, and a second voltage division detection unit electrically connected in sequence;

[0025] The first input terminal of the second relay is connected to the first node as the first input terminal of the second power module, the second input terminal is connected to the third node as the second input terminal of the second power module, and the output terminal of the second voltage division detection unit is connected to the second terminal of the power control module as the second signal output terminal of the second power module;

[0026] The third power supply module includes: a third relay, a third power frequency transformer, a third rectifier and filter unit, and a third voltage division detection unit electrically connected in sequence;

[0027] Among them, the first input end of the third relay is connected to the second node as the first input end of the third power supply module, the second input end is connected to the third node as the second input end of the third power supply module, and the output end of the third voltage divider detection unit is connected to the third end of the power control module as the third signal output end of the third power supply module.

[0028] In a possible implementation, the adjustment switch group includes: a zero-fire switch group and a communication switch group, wherein the zero-fire switch group is used to select the line where the neutral line and the live line are located, and the communication switch group is used to select the line where the communication line is located;

[0029] The first input end of the zero-ignition switch group is connected to the first node as the first input end of the adjustment switch group, the second input end is connected to the second node as the second input end of the adjustment switch group, the third input end is connected to the third node as the third input end of the adjustment switch group, the first output end is connected to the first detection point as the first output end of the adjustment switch group, and the second output end is connected to the second detection point as the second output end of the adjustment switch group;

[0030] The first input end of the communication switch group is connected to the first node, the second input end is connected to the second node, the third input end is connected to the third node, and the output end is connected to the third detection point as the third output end of the adjustment switch group.

[0031] In a possible implementation manner, the zero-ignition switch group includes: a fourth relay, a fifth relay, and a sixth relay;

[0032] The first input end of the fourth relay is connected to the first node as the first input end of the zero-ignition switch group, the second input end is connected to the second node as the second input end of the zero-ignition switch group, the first output end is connected to the first detection point as the first output end of the zero-ignition switch group, and the second output end is connected to the second detection point as the second output end of the zero-ignition switch group;

[0033] The first input terminal of the fifth relay is connected to the first node, the second input terminal is connected to the third node as the third input terminal of the zero-ignition switch group, the first output terminal is connected to the first detection point, and the second output terminal is connected to the second detection point;

[0034] The first input terminal of the sixth relay is connected to the second node, the second input terminal is connected to the third node, the first output terminal is connected to the first detection point, and the second output terminal is connected to the second detection point;

[0035] The communication switch group includes: a seventh relay, an eighth relay and a ninth relay;

[0036] The input end of the seventh relay is connected to the first node as the first input end of the communication switch group, and the output end of the seventh relay is connected to the third detection point together with the output end of the eighth relay and the output end of the ninth relay as the output end of the communication switch group;

[0037] The input end of the eighth relay is connected to the second node as the second input end of the communication switch group;

[0038] The input end of the ninth relay is connected to the third node as the third input end of the communication switch group.

[0039] In a possible implementation, the neutral line detection module includes: a tenth relay, a first resistor, a first electrolytic capacitor, a first diode, a second resistor, an optocoupler isolator, a third resistor, a second diode, and a second electrolytic capacitor;

[0040] The input end of the tenth relay is connected to the first detection point as the input end of the neutral line detection module, and the output end is connected to one end of the first resistor;

[0041] The other end of the first resistor is connected to the positive electrode of the first electrolytic capacitor, one end of the second resistor, and the first pin of the optocoupler isolator;

[0042] The cathode of the first electrolytic capacitor is connected to the anode of the first diode, the other end of the second resistor, and the second pin of the optocoupler isolator, and the cathode of the first diode is connected to the housing of the device where the system is located;

[0043] The third pin of the optocoupler isolator is connected to one end of the third resistor and the system control module as the output end of the zero line detection module, and the fourth pin is connected to the first ground end;

[0044] The cathode of the second diode is connected to the other end of the third resistor, the anode is connected to the anode of the second electrolytic capacitor and the power supply voltage, and the cathode of the second electrolytic capacitor is connected to the second ground terminal.

[0045] In a possible implementation, the neutral line selection module includes: a communication power supply unit and a neutral line selection unit, the communication power supply unit is used to provide an internal voltage source for the system, and the neutral line selection unit is used to select and connect the neutral line;

[0046] The first input end of the communication power supply unit is connected to the first detection point as the first input end of the neutral line selection module, the second input end is connected to the second detection point as the second input end of the neutral line selection module, the first output end is connected to the third detection point as the output end of the neutral line selection module, and the second output end is connected to the output end of the neutral line selection unit;

[0047] The first input end of the neutral line selection unit is connected to the first detection point and the input end of the neutral line detection module, and the second input end is connected to the second detection point.

[0048] In a possible implementation, the communication power supply unit includes: a fourth power frequency transformer, a first rectifier bridge, and a third electrolytic capacitor;

[0049] One side of the primary coil of the fourth power frequency transformer is connected to the first detection point as the first input end of the communication power supply unit, the other side of the primary coil is connected to the second detection point as the second input end of the communication power supply unit, one side of the secondary coil is connected to one end of the alternating current of the first rectifier bridge, and the other side of the secondary coil is connected to the other end of the alternating current of the first rectifier bridge;

[0050] The output end of the DC power of the first rectifier bridge is connected to the positive electrode of the third electrolytic capacitor, the input end of the DC power is connected to the negative electrode of the third electrolytic capacitor and the output end of the neutral line selection unit, and the positive electrode of the third electrolytic capacitor is connected to the third node as the output end of the communication power supply unit.

[0051] In a possible implementation manner, the neutral line selection unit includes: a third diode, a fourth diode, an eleventh relay, and a twelfth relay;

[0052] The anode of the third diode is connected to the second detection point, and the cathode is connected to the input end of the eleventh relay;

[0053] The output end of the eleventh relay is connected to the second output end of the communication power supply unit as the output end of the neutral line selection unit;

[0054] The anode of the fourth diode is connected to the first node and the input end of the neutral line detection module as the first input end of the neutral line selection unit, and the cathode is connected to the input end of the twelfth relay;

[0055] The output terminal of the twelfth relay is connected to the output terminal of the eleventh relay.

[0056] In a possible implementation, the power control module includes: a fifth diode, a sixth diode, a seventh diode, a fourth resistor, a fifth resistor, a sixth resistor, a first capacitor, a first transistor, a thirteenth relay, and an eighth diode;

[0057] The anode of the fifth diode is connected to the first output terminal of the power supply module as the first end of the power control module, and the cathode is connected to the cathode of the sixth diode, the cathode of the seventh diode, one end of the fourth resistor, one end of the fifth resistor, and one end of the first capacitor;

[0058] The anode of the sixth diode is connected to the second output terminal of the power module as the second end of the power control module, and the anode of the seventh diode is connected to the third output terminal of the power module as the third end of the power control module;

[0059] The other end of the fourth resistor is connected to the other end of the first capacitor, one end of the sixth resistor, the emitter of the first transistor and the third ground terminal;

[0060] The other end of the sixth resistor is connected to the other end of the fifth resistor and the base of the first transistor;

[0061] The collector of the first transistor is connected to the anode of the eighth diode and the first input terminal of the thirteenth relay;

[0062] The cathode of the eighth diode is connected to the first output terminal of the thirteenth relay, the second output terminal of the thirteenth relay and the power supply voltage;

[0063] The second input end of the thirteenth relay is connected to a power supply in the device where the system is located.

[0064] In a possible implementation, the system further includes: a neutral line driving module and a communication driving module, wherein the neutral line driving module is used to drive the neutral line detection module to turn on, and the communication driving module is used to drive the neutral line selection module to turn on;

[0065] The neutral line driving module is connected to a first output terminal of the system control module, and the communication driving module is connected to a second output terminal of the system control module.

[0066] In a second aspect, an embodiment of the present invention provides a line detection control method using a line detection control system, characterized by comprising:

[0067] When the first node, the second node and the third node of the line detection and control system are randomly connected to the connection ports of three lines of the device where the system is located, a control signal is generated by the power supply module, and the lines include: a neutral line, a live line and a communication line;

[0068] The adjustment switch group is controlled by the control signal to output a detection signal;

[0069] determining a detection result of the communication line according to the detection signal;

[0070] Performing a neutral line detection on the detection signal to obtain detection results of the neutral line and the live line.

[0071] In a possible implementation, the power module generates a control signal, including:

[0072] Obtaining a first output signal, a second output signal, and a third output signal representing the control signal according to a preset connection rule between the power supply module and the neutral, live, and communication lines;

[0073] The preset rule is that the power module obtains a high level signal when connected to the neutral line and the live line, obtains a low level signal when connected to the neutral line and the communication line, and obtains a low level signal when connected to the live line and the communication line.

[0074] In a possible implementation, controlling the adjustment switch group by using the control signal to output a detection signal includes:

[0075] According to the obtained control signal, the corresponding switches of the zero-ignition switch group in the adjustment switch group are driven to close, and the corresponding switches of the communication switch group in the adjustment switch group are driven to close at the same time;

[0076] outputting a first detection signal, a second detection signal, and a third detection signal representing the detection signal based on closing of corresponding switches of the adjustment switch group;

[0077] Determining the detection result of the communication line according to the detection signal specifically includes:

[0078] The communication line detection result is determined according to the third detection signal.

[0079] In a possible implementation, performing neutral line detection on the detection signal to obtain detection results of the neutral line and the live line includes:

[0080] After the system control module outputs a zero line detection drive signal, starting a zero line detection process;

[0081] When the neutral line detection process is completed, the detection results of the neutral line and the live line are obtained, and the system control module outputs a neutral line detection end signal, disconnects the neutral line detection state, and maintains the disconnected state before power is turned on again.

[0082] In one possible implementation, the method includes:

[0083] When the detection results of the neutral wire and the live wire are that the neutral wire and the live wire circuits of the device where the system is located are inconsistent with the neutral wire and the live wire circuits represented by the first detection signal and the second detection signal, the neutral wire selection module is used to switch the neutral wire and the live wire circuits of the detection point to be consistent with the neutral wire and the live wire circuits of the device where the system is located.

[0084] The line detection control system and method provided by the embodiment of the present invention are provided with a power supply module, a correction switch group, a neutral line detection module, a system control module, a neutral line selection module and a power supply control module. The three input ends of the power supply module and the three input ends of the correction switch group are respectively connected to the first node, the second node and the third node, and the three output ends of the power supply module are respectively connected to the three ends of the power supply control module; the first output end of the correction switch group is connected to the input end of the neutral line detection module and the first input end and the first detection point of the neutral line selection module, the second output end is connected to the second input end and the second monitoring point of the neutral line selection module, and the third output end is connected to the output end of the neutral line selection module and the third detection point; the output end of the neutral line detection module is connected to the input end of the system control module, and combined with the neutral line selection module, the identification and detection of the neutral, live and communication lines of the equipment are completed; the system is controlled by the power supply module, the correction switch group and the system control module; this solution can achieve the technical effect of line identification, detection and control of the neutral, live and communication lines of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0085] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0086] Figure 1 A schematic structural diagram of a line detection control system provided by an embodiment of the present invention;

[0087] Figure 2 A schematic structural diagram of another line detection control system provided by an embodiment of the present invention;

[0088] Figure 3 A schematic diagram of the structure of a power supply module provided in an embodiment of the present invention;

[0089] Figure 4 A schematic diagram of the structure of a regulating switch group provided in an embodiment of the present invention;

[0090] Figure 5 A schematic structural diagram of a zero line detection module provided in an embodiment of the present invention;

[0091] Figure 6 A schematic structural diagram of a neutral line selection module provided in an embodiment of the present invention;

[0092] Figure 7 A schematic diagram of the structure of a power control module provided in an embodiment of the present invention;

[0093] Figure 8 A schematic structural diagram of a first rectifying and filtering unit and a first voltage dividing detection unit provided in an embodiment of the present invention;

[0094] Figure 9A schematic structural diagram of a neutral line driver module and a communication driver module provided in an embodiment of the present invention;

[0095] Figure 10 A schematic flow chart of a line detection control method using a line detection control system provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0096] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0097] In the embodiments of the present invention, the terms "including" and "having" are intended to convey an open-ended, inclusive meaning and indicate that additional elements / components / etc. may be present in addition to the listed elements / components / etc.; the terms "first" and "second," etc., are used merely as labels and do not limit the quantity of their objects. Furthermore, the various elements and regions in the drawings are shown for schematic purposes only, and thus the present invention is not limited to the sizes or distances shown in the drawings.

[0098] To facilitate understanding of the embodiments of the present invention, specific embodiments will be further explained below with reference to the accompanying drawings. The embodiments do not limit the embodiments of the present invention.

[0099] Air conditioner indoor and outdoor unit communication refers to the communication between the indoor and outdoor units through a three-wire system. The three-wire system here refers to the connecting wires between the indoor and outdoor units, including the neutral wire, the live wire and the communication wire, which constitute half-duplex asynchronous serial communication to achieve communication between the indoor and outdoor units of the air conditioner.

[0100] Figure 1 A schematic diagram of the structure of a line detection control system provided by an embodiment of the present invention. Figure 1 The structure shown in FIG. 1 is a line detection control system that specifically includes:

[0101] The power supply module 11 , the adjustment switch group 12 , the neutral line detection module 13 , the system control module 14 , the neutral line selection module 15 and the power supply control module 16 .

[0102] Furthermore, the line detection and control system also includes a first node (hereinafter collectively referred to as A), a second node (hereinafter collectively referred to as B), and a third node (hereinafter collectively referred to as C). These nodes can be understood as connection points between two units or three units, or as one of the connection ports to the neutral and live communication lines. For example, A is the electrical connection point formed by the connection between the power module and the regulating switch group, which is used to connect to one of the neutral, live, or communication lines.

[0103] Furthermore, the line detection and control system also includes a first monitoring point (hereinafter collectively referred to as P), a second monitoring point (hereinafter collectively referred to as Q), and a third monitoring point (hereinafter collectively referred to as M). The aforementioned monitoring points can be understood as connection points formed by connecting two units or three units in the internal circuit of the device where the system is located in order to detect the neutral, live, and communication lines. For example, P is an electrical connection point formed by connecting the adjustment switch group, the neutral line detection module, and the neutral line selection module. It also represents one of the three neutral, live, and communication lines connected to the device where the system is located, and is used for subsequent circuit identification and judgment of the neutral and live lines.

[0104] The internal circuit structure of a line detection control system provided by an embodiment of the present invention includes:

[0105] The first input end of the power supply module 11 is connected to the first node A, the second input end is connected to the second node B, the third input end is connected to the third node C, the first output end is connected to the first end of the power supply control module 16, the second output end is connected to the second end of the power supply control module 16, and the third output end is connected to the third end of the power supply control module 16.

[0106] The first input end of the adjustment switch group 12 is connected to the first node A, the second input end is connected to the second node B, the third input end is connected to the third node C, the first output end of the adjustment switch group 12 is connected to the first detection point P, the second output end is connected to the second detection point Q, and the third output end is connected to the third detection point M.

[0107] An input end of the zero line detection module 13 is connected to the first detection point P, and an output end thereof is connected to an input end of the system control module 14 .

[0108] The first input terminal of the neutral line selection module 15 is connected to the first detection point P, the second input terminal is connected to the second detection point Q, and the output terminal is connected to the third detection point M.

[0109] Furthermore, the power supply module 11 is used to provide a stable voltage source to the system; the input end of the adjustment switch group 12 is connected to the power supply module 11, for inputting the voltage source provided by the system, and the output end is connected to the neutral line detection module 13 and the neutral line selection module 15, for outputting a detection signal representing the neutral line and the live line to the neutral line detection module 13, and at the same time detecting a detection signal representing the communication line, and providing the detection signal representing the communication line to the neutral line selection module 15; the neutral line detection module 13 is used to identify and detect the neutral line and the live line; the neutral line selection module 13 is used to connect the neutral line after identification and detection, and provide a voltage source for the internal circuit of the system; the power control module 16 is connected to the power supply module 11, for controlling the power supply voltage generated by the power supply module; the system control module 14 is connected to the neutral line detection module 13 and the neutral line selection module 15, for controlling the start and end of the neutral line detection, and controlling the neutral line selection module 15 to perform zero line selection processing.

[0110] In one possible embodiment, after the first node A, second node B, and third node C of the system device are randomly connected to the neutral, live, and communication lines, the system device is powered via the first node A, second node B, and third node C. The first node A, second node B, and third node C are sequentially connected to the three input terminals of the power module 11, respectively, to provide voltage to the power module 11. Under the control of the power control module 16, the power module 11 begins operation and outputs three corresponding voltage signals. Because it is uncertain whether the first node A, second node B, and third node C are correctly connected, the connection relationship between the first node A, second node B, and third node C needs to be determined based on the magnitude of the three voltage signals. The three output voltage signals control the switches within the adjustment switch group 12, and correspondingly output voltage signals for the first detection point P, the second detection point Q, and the third detection point M. While the equipment where the system is located is powered on, the system control module 14 controls the opening of the neutral line detection module to realize the neutral line detection and identification processing of the first detection point P by the neutral line detection module 13, identify whether the line where the first detection point P is located is the neutral line, and feed back the identification and detection results to the system control module. The system control module 14 controls the neutral line selection module 15 to complete the selection of the neutral line. The correct neutral line is selected by the neutral line selection module 15 to provide a safe and stable voltage source for the internal circuit of the equipment where the system is located, and then determine that the lines where the first detection point P and the second detection point Q are located correspond to two of the neutral, live, and communication lines. The output end of the neutral line selection module 15 is connected to the third detection point M to complete the connection and identification detection of the neutral, live, and communication lines of the equipment where the system is located. By controlling the neutral line selection module 15, the output of the stable voltage source is achieved, achieving the technical effect of line identification detection and control of the neutral, live, and communication lines of the equipment where the system is located.

[0111] Among them, each output voltage signal end is provided with a corresponding driving module for signal driving control.

[0112] Furthermore, the system control module can be understood as a microprocessor unit in the internal circuit of the device where the system is located, which can be but is not limited to an MCU unit, and can also be other integrated units that can complete system control.

[0113] The line detection control system provided by the embodiment of the present invention is provided with a power supply module, a correction switch group, a neutral line detection module, a system control module, a neutral line selection module and a power supply control module. The three input ends of the power supply module and the three input ends of the correction switch group are respectively connected to the first node, the second node and the third node, and the three output ends of the power supply module are respectively connected to the three ends of the power supply control module; the first output end of the correction switch group is connected to the input end of the neutral line detection module and the first input end and the first detection point of the neutral line selection module, the second output end is connected to the second input end and the second monitoring point of the neutral line selection module, and the third output end is connected to the output end of the neutral line selection module and the third detection point; the output end of the neutral line detection module is connected to the input end of the system control module, and combined with the neutral line selection module, the neutral, live and communication lines of the equipment in the system are identified and detected; the system is controlled by the power supply module, the correction switch group and the system control module; this solution can achieve the technical effect of line identification, detection and control of the neutral, live and communication lines of the equipment in the system.

[0114] In an optional scheme of an embodiment of the present invention, the power supply module includes: a first power supply module, a second power supply module and a third power supply module; the first input end of the first power supply module is connected to the first node as the first input end of the power supply module, the second input end is connected to the second node as the second input end of the power supply module, and the first signal output end is connected to the first end of the power supply control module as the first output end of the power supply module; the first input end of the second power supply module is connected to the first node, the second input end is connected to the third node as the third input end of the power supply module, and the second signal output end is connected to the second end of the power supply control module as the second output end of the power supply module; the first input end of the third power supply module is connected to the second node, the second input end is connected to the third node, and the third signal output end is connected to the third end of the power supply control module as the third output end of the power supply module.

[0115] In an optional scheme of an embodiment of the present invention, the first power supply module includes: a first relay, a first power frequency transformer, a first rectifier and filter unit and a first voltage divider detection unit electrically connected in sequence; wherein the first input end of the first relay is connected to the first node as the first input end of the first power supply module, the second input end is connected to the second node as the second input end of the first power supply module, and the output end of the first voltage divider detection unit is connected to the first end of the power supply control module as the first signal output end of the first power supply module; the second power supply module includes: a second relay, a second power frequency transformer, a second rectifier and filter unit and a second voltage divider detection unit electrically connected in sequence; wherein the first input end of the second relay is connected to the second node as the second input end of the second power supply module The first input end of the block is connected to the first node, the second input end is connected to the third node as the second input end of the second power supply module, and the output end of the second voltage divider detection unit is connected to the second end of the power control module as the second signal output end of the second power supply module; the third power supply module includes: a third relay, a third industrial frequency transformer, a third rectifier and filter unit and a third voltage divider detection unit electrically connected in sequence; wherein, the first input end of the third relay is connected to the second node as the first input end of the third power supply module, the second input end is connected to the third node as the second input end of the third power supply module, and the output end of the third voltage divider detection unit is connected to the third end of the power control module as the third signal output end of the third power supply module.

[0116] In an optional scheme of an embodiment of the present invention, the adjustment switch group includes: a zero-fire switch group and a communication switch group, the zero-fire switch group is used to select the line where the neutral line and the live line are located, and the communication switch group is used to select the line where the communication line is located; the first input end of the zero-fire switch group is connected to the first node as the first input end of the adjustment switch group, the second input end is connected to the second node as the second input end of the adjustment switch group, the third input end is connected to the third node as the third input end of the adjustment switch group, the first output end is connected to the first detection point as the first output end of the adjustment switch group, and the second output end is connected to the second detection point as the second output end of the adjustment switch group; the first input end of the communication switch group is connected to the first node, the second input end is connected to the second node, the third input end is connected to the third node, and the output end is connected to the third detection point as the third output end of the adjustment switch group.

[0117] In an optional scheme of an embodiment of the present invention, the zero-ignition switch group includes: a fourth relay, a fifth relay and a sixth relay; the first input end of the fourth relay is connected to the first node as the first input end of the zero-ignition switch group, the second input end is connected to the second node as the second input end of the zero-ignition switch group, the first output end is connected to the first detection point as the first output end of the zero-ignition switch group, and the second output end is connected to the second detection point as the second output end of the zero-ignition switch group; the first input end of the fifth relay is connected to the first node, the second input end is connected to the third node as the third input end of the zero-ignition switch group, the first output end is connected to the first detection point, and the second output end is connected to the second detection point; the first input end of the sixth relay is connected to the second node, the second input end is connected to the third node, the first output end is connected to the first detection point, and the second output end is connected to the second detection point; the communication switch group includes: a seventh relay, an eighth relay and a ninth relay; the input end of the seventh relay is connected to the first node as the first input end of the communication switch group, and the output end of the seventh relay is connected to the first node as the first input end of the communication switch group, and the output end of the eighth relay and the output end of the ninth relay are connected to the third detection point; the input end of the eighth relay is connected to the second node as the second input end of the communication switch group; the input end of the ninth relay is connected to the third node as the third input end of the communication switch group.

[0118] In an optional scheme of an embodiment of the present invention, the zero line detection module includes: a tenth relay, a first resistor, a first electrolytic capacitor, a first diode, a second resistor, an optocoupler isolator, a third resistor, a second diode and a second electrolytic capacitor; the input end of the tenth relay is connected to the first detection point as the input end of the zero line detection module, and the output end is connected to one end of the first resistor; the other end of the first resistor is connected to the positive electrode of the first electrolytic capacitor, one end of the second resistor and the first pin of the optocoupler isolator; the negative electrode of the first electrolytic capacitor is connected to the positive electrode of the first diode and the other end of the second resistor and the second pin of the optocoupler isolator, and the negative electrode of the first diode is connected to the device casing where the system is located; the third pin of the optocoupler isolator is connected to one end of the third resistor and the system control module as the output end of the zero line detection module, and the fourth pin is connected to the first ground end; the negative electrode of the second diode is connected to the other end of the third resistor, the positive electrode is connected to the positive electrode of the second electrolytic capacitor and the power supply voltage, and the negative electrode of the second electrolytic capacitor is connected to the second ground end.

[0119] In an optional scheme of an embodiment of the present invention, the neutral line selection module includes: a communication power supply unit and a neutral line selection unit, the communication power supply unit is used to provide an internal voltage source for the system, and the neutral line selection unit is used to select and connect the neutral line; the first input end of the communication power supply unit is connected to the first detection point as the first input end of the neutral line selection module, the second input end is connected to the second detection point as the second input end of the neutral line selection module, the first output end is connected to the third detection point as the output end of the neutral line selection module, and the second output end is connected to the output end of the neutral line selection unit; the first input end of the neutral line selection unit is connected to the first detection point and the input end of the neutral line detection module, and the second input end is connected to the second detection point.

[0120] In an optional scheme of an embodiment of the present invention, the communication power supply unit includes: a fourth industrial frequency transformer, a first rectifier bridge and a third electrolytic capacitor; one side of the primary coil of the fourth industrial frequency transformer is connected to the first detection point as the first input end of the communication power supply unit, and the other side of the primary coil is connected to the second detection point as the second input end of the communication power supply unit, one side of the secondary coil is connected to one end of the alternating current of the first rectifier bridge, and the other side of the secondary coil is connected to the other end of the alternating current of the first rectifier bridge; the output end of the direct current of the first rectifier bridge is connected to the positive pole of the third electrolytic capacitor, the input end of the direct current is connected to the negative pole of the third electrolytic capacitor and the output end of the neutral line selection unit, and the positive pole of the third electrolytic capacitor is connected to the third node as the output end of the communication power supply unit.

[0121] In an optional scheme of an embodiment of the present invention, the neutral line selection unit includes: a third diode, a fourth diode, an eleventh relay and a twelfth relay; the positive pole of the third diode is connected to the second detection point, and the negative pole is connected to the input end of the eleventh relay; the output end of the eleventh relay is connected to the second output end of the communication power supply unit as the output end of the neutral line selection unit; the positive pole of the fourth diode is connected to the first node and the input end of the neutral line detection module as the first input end of the neutral line selection unit, and the negative pole is connected to the input end of the twelfth relay; the output end of the twelfth relay is connected to the output end of the eleventh relay.

[0122] In an optional solution of an embodiment of the present invention, the power control module includes: a fifth diode, a sixth diode, a seventh diode, a fourth resistor, a fifth resistor, a sixth resistor, a first capacitor, a first transistor, a thirteenth relay and an eighth diode; the anode of the fifth diode is connected to the first output terminal of the power module as the first end of the power control module, and the cathode is connected to the cathode of the sixth diode, the cathode of the seventh diode, one end of the fourth resistor, one end of the fifth resistor and one end of the first capacitor; the anode of the sixth diode is connected to the second output terminal of the power module as the second end of the power control module, and the anode of the seventh diode is connected to the third output terminal of the power module as the third end of the power control module; the other end of the fourth resistor is connected to the other end of the first capacitor, one end of the sixth resistor, the emitter of the first transistor and the third ground terminal; the other end of the sixth resistor is connected to the other end of the fifth resistor and the base of the first transistor; the collector of the first transistor is connected to the anode of the eighth diode and the first input terminal of the thirteenth relay; the cathode of the eighth diode is connected to the first output terminal of the thirteenth relay, the second output terminal of the thirteenth relay and the power supply voltage; and the second input terminal of the thirteenth relay is connected to the power supply in the device where the system is located.

[0123] In an optional scheme of an embodiment of the present invention, the system also includes: a neutral line drive module and a communication drive module, the neutral line drive module is used to drive the neutral line detection module to turn on, and the communication drive module is used to drive the neutral line selection module to turn on; the neutral line drive module is connected to the first output end of the system control module, and the communication drive module is connected to the second output end of the system control module.

[0124] In the following, the power supply module includes: a first power supply module, a second power supply module and a third power supply module, the adjustment switch group includes: a zero-ignition switch group and a communication switch group, the zero-line selection module includes: a communication power supply unit and a zero-line selection unit, a zero-line detection module, a system control module and a power control module as an example for introduction. The resistance in the embodiment of the present invention represents a resistance device, which can be represented by a resistance but is not limited to a resistance device. Figure 2 , shows a schematic diagram of the structure of another line detection control system provided by an embodiment of the present invention. This line detection control system is described based on the first line detection control system. Figure 2 Specifically shown include:

[0125] The power supply module 11 , the adjustment switch group 12 , the neutral line detection module 13 , the system control module 14 , the neutral line selection module 15 and the power supply control module 16 .

[0126] Furthermore, the line detection and control system also includes a first node (hereinafter collectively referred to as A), a second node (hereinafter collectively referred to as B), and a third node (hereinafter collectively referred to as C). These nodes can be understood as connection points between two units or three units, or as connection ports to one of the neutral, live, or communication lines. For example, A is an electrical connection point formed by the connection between the power module and the regulating switch group, which is used to connect to one of the neutral, live, or communication lines.

[0127] Furthermore, the line detection and control system also includes a first monitoring point (hereinafter collectively referred to as P), a second monitoring point (hereinafter collectively referred to as Q), and a third monitoring point (hereinafter collectively referred to as M). The aforementioned monitoring points can be understood as connection points formed by connecting two units or three units in the internal circuit of the device where the system is located in order to detect the neutral, live, and communication lines. For example, P is an electrical connection point formed by connecting the adjustment switch group, the neutral line detection module, and the neutral line selection module. It also represents one of the three neutral, live, and communication lines connected to the device where the system is located, and is used for subsequent circuit identification and judgment of the neutral and live lines.

[0128] Furthermore, the line detection and control system also includes a first output signal corresponding to the first signal output terminal (hereinafter collectively referred to as e1), a second output signal corresponding to the second signal output terminal (hereinafter collectively referred to as e2), and a third output signal corresponding to the third signal output terminal (hereinafter collectively referred to as e3). The aforementioned signal output terminals can be understood as three voltage signals output by the power module. For example, e1 is the voltage signal output by the first signal output terminal of the power module.

[0129] The power module 11 specifically includes:

[0130] A first power module 21 , a second power module 22 and a third power module 23 .

[0131] The first input end of the first power supply module 21 is connected to the first node A as the first input end of the power supply module 11, the second input end is connected to the second node B as the second input end of the power supply module 11, and the first signal output end is connected to the first end of the power supply control module 16 as the first output end of the power supply module 11; the first input end of the second power supply module 22 is connected to the first node A, the second input end is connected to the third node C as the third input end of the power supply module 11, and the second signal output end is connected to the second end of the power supply control module 16 as the second output end of the power supply module 11; the first input end of the third power supply module 23 is connected to the second node B, the second input end is connected to the third node C, and the third signal output end is connected to the third end of the power supply control module 16 as the third output end of the power supply module 11.

[0132] Furthermore, the input end of the first power supply module 21 is connected to the first node A and the second node B to obtain a first output signal e1 corresponding to the first signal output end, and the magnitude of the first output signal e1 represents the magnitude of the output voltage of the first power supply module 21; the input end of the second power supply module 22 is connected to the first node A and the third node C to obtain a second output signal e2 corresponding to the second signal output end, and the second output signal e2 represents the voltage signal output by the second power supply module 22 after being connected through the first node A and the third node C; the input end of the third power supply module 23 is connected to the second node B and the third node C to obtain a third output signal e3 corresponding to the third signal output end, and the third output signal e3 represents the voltage signal output by the third power supply module 23 after being connected through the second node B and the third node C.

[0133] according to Figure 2The provided diagram illustrates a possible example scenario in which, after the first node A, second node B, and third node C of a system device are randomly connected to the neutral, live, and communication lines, the system device is powered by the first node A, second node B, and third node C. Voltage is provided to the first power module 21 via the first and second nodes A and B, which are sequentially connected to the two input terminals of the first power module 21. Under the control of the power control module 16, the first power module 21 begins operation and outputs a corresponding first output signal e1. Similarly, voltage is provided to the second power module 22 via the first and third nodes A and C, which are sequentially connected to the two input terminals of the second power module 22. Under the control of the power control module 16, the second power module 22 begins operation and outputs a corresponding second output signal e2. Voltage is provided to the third power module 23 via the second and third nodes B and C, which are sequentially connected to the two input terminals of the third power module 23. Under the control of the power control module 16, the third power module 23 begins operation and outputs a corresponding third output signal e3. Based on the high and low levels of the three output signals, a high-level signal and two low-level signals are obtained. At this point, the lines connected to the two nodes of the power module representing the high-level output signal are determined to be the neutral and live lines, and the line at the third node is determined to be the communication line. The high-level signal among the three output signals is then used to control the internal switches of the adjustment switch group, causing them to close accordingly. The three output terminals representing the neutral, live, and communication line functions are correspondingly connected to the first, second, and third detection points. The communication line is now identified after the high-level signal is output. The system control module 14 then controls the neutral line detection module 13 to initiate neutral line identification and detection at the first detection point, and feeds the identification and detection results back to the system control module 14. The system control module 14 outputs the corresponding output signal to control the neutral line selection module 15. After the neutral line selection module 15 selects the correct neutral line, further identification and detection of the neutral and live lines are completed. Through the selection and control of the adjustment switch group and the neutral line selection module, the technical effect of identifying, detecting, and controlling the neutral, live, and communication lines of the system equipment is achieved.

[0134] like Figure 2 The structure shown, the adjustment switch group 12 in the line detection and control system specifically includes:

[0135] Zero ignition switch group 24 and communication switch group 25.

[0136] The zero-fire switch group 24 is used to select the line where the neutral line and the live line are located, and the communication switch group 25 is used to select the line where the communication line is located; the first input end of the zero-fire switch group 24 is connected to the first node A as the first input end of the adjustment switch group 12, the second input end is connected to the second node B as the second input end of the adjustment switch group 12, the third input end is connected to the third node C as the third input end of the adjustment switch group 12, the first output end is connected to the first detection point P as the first output end of the adjustment switch group 12, and the second output end is connected to the second detection point Q as the second output end of the adjustment switch group 12; the first input end of the communication switch group 25 is connected to the first node A, the second input end is connected to the second node B, the third input end is connected to the third node C, and the output end is connected to the third detection point M as the third output end of the adjustment switch group 12.

[0137] In one possible example scenario, the system device is powered on by connecting the first node A, the second node B, and the third node C. Power is supplied by connecting the power module 11 to the three nodes, and three corresponding output signals are output. By determining the high and low levels of the three output signals, a high-level signal and two low-level signals are obtained. Based on the different levels of signals generated by the different levels of charge on the neutral, live, and communication lines, it can be determined that the two nodes connected within the power module 11 corresponding to the high-level signal are the neutral and live wires, and the third node is then determined to be the communication line. The high-level signal output by the power module 11 controls the closure of the corresponding switches within the neutral and live switch group 24, correspondingly outputting two output terminals representing the neutral and live wires, which are connected to the first monitoring point P and the second monitoring point Q. At this point, the third monitoring point M can be determined to be the communication line. The system control module controls the neutral line detection module to initiate detection of the line containing the first monitoring point P and the second monitoring point Q, obtaining a neutral line identification detection result. The neutral line detection module 13 feeds back the detection result to the system control module, controls the neutral line detection module to end the detection process, and controls the neutral line selection module 15 to select the neutral line, and determines the neutral line in the line where the first monitoring point P and the second monitoring point Q are located, thereby achieving the technical effect of identifying, detecting and controlling the neutral, live and communication lines of the equipment in the system.

[0138] like Figure 2 The structure shown, the neutral line selection module 15 in the line detection control system specifically includes:

[0139] Communication power supply unit 26 and neutral line selection unit 27.

[0140] The communication power supply unit 26 is used to provide an internal voltage source for the system, and the neutral line selection unit 27 is used to select and connect the neutral line; the first input end of the communication power supply unit 26 is connected to the first detection point P as the first input end of the neutral line selection module 15, the second input end is connected to the second detection point Q as the second input end of the neutral line selection module 15, the first output end is connected to the third detection point M as the output end of the neutral line selection module 15, and the second output end is connected to the output end of the neutral line selection unit 27; the first input end of the neutral line selection unit 27 is connected to the first detection point P and the input end of the neutral line detection module 13, and the second input end is connected to the second detection point Q.

[0141] according to Figure 2 The diagram shows a possible example scenario in which a system device is powered on by connecting a first node A, a second node B, and a third node C. Power control module 16 controls power module 11 to provide power and simultaneously output three corresponding output signals. By determining which of the three output signals corresponds to the two connected nodes, it can be determined that the lines on which these two nodes are connected are the neutral and live wires, and the third node is then detected as a communication line. The high-level output signal is then used to close the corresponding switches in the regulating switch group, resulting in output voltages representing the three detection points on the neutral, live, and communication lines. The system control module 14 is used to control the zero line detection module to start the detection state, and the output zero line identification detection result is fed back to the system control module 14. Under the control of the system control module 14, the zero line detection state is ended, and the zero line selection unit 27 is controlled to identify the zero line, identify the zero line in the line where the first detection point P and the second monitoring point Q are located, and connect the identified zero line to the communication power supply unit 26 to complete the adjustment and connection of the zero line. At the same time, the output end of the communication power supply unit 26 is connected to the identified third detection point, that is, the connection with the communication line is realized, thereby achieving the technical effect of identifying, detecting and controlling the zero, live and communication lines of the equipment in the system.

[0142] like Figure 2 The structure shown in FIG. 1 further includes:

[0143] Neutral line driving module 28 and communication driving module 29.

[0144] The neutral line driving module 28 is used to drive the neutral line detection module to turn on, and the communication driving module 29 is used to drive the neutral line selection module 13 to turn on; the neutral line driving module 28 is connected to the first output end of the system control module 14, and the communication driving module 29 is connected to the second output end of the system control module 14.

[0145] The line detection control system provided by the embodiment of the present invention is provided with a first power supply module, a second power supply module, a third power supply module, a zero-fire switch group, a communication switch group, a communication power supply unit, a zero line selection unit, a zero line detection module, a system control module and a power control module. When the device in the system is randomly connected to three nodes, it is powered by the power control module; by obtaining the output signals of the three power supply modules, analyzing the two connection nodes corresponding to the power supply module where the high-level output signal is located as the zero line and the live line, and then determining that the third node is the communication line. Under the action of the high-level output signal, the internal switch of the zero-fire switch group is controlled to close, and the first and second monitoring points representing the zero line and the live line are correspondingly output. At the same time, under the action of the high-level output signal, the internal switch of the communication switch group is controlled to close, and the third monitoring point representing the communication line is correspondingly output, and then the third monitoring point is identified as the communication line. Under the control of the neutral line detection module by the system control module, a neutral line identification test is performed on the line where the first detection point and the second monitoring point are located. The obtained neutral line identification test result is fed back to the system control module, which controls the neutral line detection module to end the detection process and simultaneously controls the neutral line selection unit to perform neutral line identification. The neutral line is selected by the neutral line selection unit and connected to one output terminal of the communication power supply unit. The other output terminal of the communication power supply unit is connected to the third identification point, that is, the communication line that has been detected, to provide a stable internal voltage source for the internal circuit of the device where the system is located. The technical effect of identifying, detecting and controlling the neutral, live and communication lines of the device where the system is located is achieved through the neutral line switch group, the communication switch group, the neutral line selection unit and the system control module.

[0146] In the following, the first power supply module includes: a first relay, a first power frequency transformer, a first rectifier filter unit and a first voltage divider detection unit electrically connected in sequence; the second power supply module includes: a second relay, a second power frequency transformer, a second rectifier filter unit and a second voltage divider detection unit electrically connected in sequence; the third power supply module includes: a third relay, a third power frequency transformer, a third rectifier filter unit and a third voltage divider detection unit electrically connected in sequence; the zero-fire switch group includes: a fourth relay, a fifth relay and a sixth relay; the communication switch group includes: a seventh relay, an eighth relay and a ninth relay; the zero-line detection module includes: The tenth relay, the first resistor, the first electrolytic capacitor, the first diode, the second resistor, the optocoupler isolator, the third resistor, the second diode and the second electrolytic capacitor, the communication power supply unit includes: the fourth power frequency transformer, the first rectifier bridge and the third electrolytic capacitor, the neutral line selection unit includes: the third diode, the fourth diode, the eleventh relay and the twelfth relay, the power control module includes: the fifth diode, the sixth diode, the seventh diode, the fourth resistor, the fifth resistor, the sixth resistor, the first capacitor, the first transistor, the thirteenth relay and the eighth diode, the system control module, the neutral line drive module and the communication drive module are introduced as examples. The resistors, capacitors and relays in the embodiments of the present invention respectively represent resistors, capacitors and relay devices, which can be represented by resistors, capacitors and relays respectively but are not limited to one representation method. Refer to Figure 3-8 , shows a schematic diagram of the structure of a line detection control system provided by an embodiment of the present invention. This line detection control system is described based on the second line detection control system. The line detection control system specifically includes:

[0147] The first power module 21, the second power module 22, the third power module 23, the zero-ignition switch group 24, the communication switch group 25, the neutral line detection module 13, the communication power supply unit 26, the neutral line selection unit 27, the power control module 16, the system control module 14, the neutral line drive module 28 and the communication drive module 29.

[0148] like Figure 3 The structure shown, the first power supply module 21 in the line detection control system specifically includes:

[0149] The first relay K- 1 , the first power frequency transformer T1 , the first rectifying and filtering unit 31 and the first voltage dividing detection unit 32 are electrically connected in sequence.

[0150] Among them, the first input end of the first relay K-1 is connected to the first node A as the first input end of the first power supply module 21, the second input end is connected to the second node B as the second input end of the first power supply module 21, and the output end of the first voltage divider detection unit 32 is connected to the first end of the power control module 16 as the first signal output end of the first power supply module 21.

[0151] Furthermore, the first output end of the first relay K-1 is connected to one end of the primary coil of the first industrial frequency transformer T1, and the second output end is connected to the other end of the primary coil of the first industrial frequency transformer T1; one end of the secondary coil of the first industrial frequency transformer T1 is connected to one end of the alternating current of the first rectifier and filter unit 31, and the other side is connected to the other end of the alternating current of the first rectifier and filter unit; the output end of the direct current of the first rectifier and filter unit 31 is connected to the first input end of the first voltage divider detection unit 32, and the input end of the direct current is connected to the second input end of the first voltage divider detection unit 32.

[0152] like Figure 3 The structure shown, the second power module 22, specifically includes:

[0153] The second relay K-2, the second power frequency transformer T2, the second rectifying and filtering unit 33 and the second voltage dividing detection unit 34 are electrically connected in sequence.

[0154] Among them, the first input end of the second relay K-2 is connected to the first node A as the first input end of the second power supply module 22, the second input end is connected to the third node C as the second input end of the second power supply module 22, and the output end of the second voltage divider detection unit 34 is connected to the second end of the power control module 16 as the second signal output end of the second power supply module 22.

[0155] Furthermore, the first output end of the second relay K-2 is connected to one side of the primary coil of the second industrial frequency transformer T2, and the second output end is connected to the other side of the primary coil of the second industrial frequency transformer T2; one side of the secondary coil of the second industrial frequency transformer T2 is connected to one end of the alternating current of the second rectifier and filter unit 33, and the other side is connected to the other end of the alternating current of the second rectifier and filter unit 33; the output end of the direct current of the second rectifier and filter unit 33 is connected to the first input end of the second voltage divider detection unit 34, and the input end of the direct current is connected to the second input end of the second voltage divider detection unit 34.

[0156] like Figure 3 The structure shown, the third power module 23, specifically includes:

[0157] The third relay K-3, the third power frequency transformer T3, the third rectifying and filtering unit 35 and the third voltage dividing detection unit 36 are electrically connected in sequence.

[0158] Among them, the first input end of the third relay K-3 is connected to the second node B as the first input end of the third power supply module 23, the second input end is connected to the third node C as the second input end of the third power supply module 23, and the output end of the third voltage divider detection unit 36 is connected to the third end of the power control module 16 as the third signal output end of the third power supply module 23.

[0159] Furthermore, the first output end of the third relay K-3 is connected to one side of the primary coil of the third industrial frequency transformer T3, and the second output end is connected to the other side of the primary coil of the third industrial frequency transformer T3; one side of the secondary coil of the third industrial frequency transformer T3 is connected to one end of the alternating current of the third rectifier and filter unit 35, and the other side is connected to the other end of the alternating current of the third rectifier and filter unit 35; the output end of the direct current of the third rectifier and filter unit 35 is connected to the first input end of the third voltage divider detection unit 36, and the input end of the direct current is connected to the second input end of the third voltage divider detection unit 36.

[0160] Furthermore, the first relay, the second relay and the third relay are normally closed switch relays.

[0161] In one possible example scenario, according to Figure 3 The provided structure is randomly connected to the neutral, live, and communication lines through the three nodes of the device where the system is located, and the three power modules are controlled under the action of the power control module 16 to turn on the power supply state. Among the three power modules, taking the first power module as an example, after connecting the first node A and the second node B, the input voltage is transformed by the first power frequency transformer T1 after the first relay K-1 is closed, and the output voltage is changed and electrical isolation is achieved. Then, after the rectification and filtering processing of the first rectifier and filter unit 31, a stable DC voltage source is obtained, and then after the voltage is divided by the first voltage divider detection unit 32, the ideal output signal e1 is obtained. The internal structure of the second power module and the third power module is the same as that of the first power module, and will not be repeated here.

[0162] Since the specific connection relationships between the first node A, the second node B, and the third node C and the neutral, live, and communication lines are uncertain at the beginning, there will be 6 possible connection relationships. Assuming that the neutral line is represented by N, the live line is represented by L, and the communication line is represented by COM, the specific relationships are shown in Table 1.

[0163] Table 1 External unit input terminal

[0164]

[0165]

[0166] Through the above 6 possible connection relationships, Figure 3 Make an introduction.

[0167] Taking the first power supply module as an example, one of the main functions of the power supply module is to provide power for the relay switch drive circuit and other circuits, and the mains 220V AC power is used as the input terminal.

[0168] When the input terminals of the first node A and the second node B are L (live wire) and N (neutral wire), due to the potential difference between the first node A and the second node B, the output signal voltage is high, and the first output signal e1 = 1;

[0169] When the input terminals of the first node A and the second node B are COM (communication line) and N (neutral line), there is no voltage difference between the first node A and the second node B. At this time, the output signal voltage is low, and the second output signal e2 = 0;

[0170] When the input ends of the first node A and the second node B are COM (communication line) and L (live wire), there is voltage between the first node A and the second node B. However, because the device where the system at the input end is located has a voltage divider detection unit, the output voltage is reduced to a very low level. At this time, the output signal voltage is low, and the third output signal e3 = 0.

[0171] Based on the differences in the above outputs, it can be determined that the first node A and the second node B are the neutral and live wires, and the third node C is the communication line. Subsequent neutral line detection modules and neutral line selection modules are then used to identify and detect the neutral and live wires, thereby achieving the technical effect of automatically detecting the neutral, live, and communication lines.

[0172] When the power module outputs a high level, it proves that the input of the first power module 21 is the neutral line and the live line, and the first output signal e1 output level signal is 1; then, the inputs of the second power module 22 and the third power module 23 are the neutral line, the communication line and the live line, the communication line respectively, and the corresponding second output signal e2 and third output signal e3 output level signals are 0.

[0173] For example, when the first output signal e1=1, the first output signal e2=0, and the first output signal e3=0, the first relay K-1 does not operate and remains closed; the second relay K-2 and the third relay K-3 are disconnected to prevent interference between the three connection lines from affecting communication.

[0174] Optionally, there is more than one way to implement the internal circuit structure of the rectification and filtering functions in the three power modules, such as Figure 8 The structure shown in FIG. 1 shows the circuit structure of one type of rectifier and filter unit that can implement the rectifier and filter functions. The internal structure of the three rectifier and filter units is the same. The second rectifier and filter unit differs from the first rectifier and filter unit in that the signals at its two input terminals are different, resulting in a different output voltage signal. Similarly, the third rectifier and filter unit differs from the first rectifier and filter unit in that the signals at its two input terminals are different, resulting in a different output voltage signal. Only one type of rectifier and filter unit is described here, and the other two are not described in detail.

[0175] like Figure 8 The structure shown, the first rectifying and filtering unit 31, specifically includes:

[0176] a ninth diode D9, a tenth diode D10, an eleventh diode D11, a twelfth diode D12, a fourth electrolytic capacitor Cr4 and a seventh resistor R7.

[0177] The anode of the ninth diode D9 is connected to one side of the secondary coil of the first power frequency transformer T1 as one end of the alternating current of the first rectifying and filtering unit 31, and the cathode is connected to the anode of the fourth electrolytic capacitor Cr4 and one end of the seventh resistor R7 as the output end of the direct current of the first rectifying and filtering unit 31; the anode of the tenth diode D10 is connected to the negative electrode of the fourth electrolytic capacitor Cr4, the other end of the seventh resistor R7 and the fourth ground end as the input end of the direct current of the first rectifying and filtering unit 31, and the cathode is connected to the anode of the ninth diode D9; the anode of the eleventh diode D11 is connected to the anode of the tenth diode D10, and the cathode is connected to the other side of the secondary coil of the first power frequency transformer T1 as the other end of the alternating current of the first rectifying and filtering unit 31; the anode of the twelfth diode D12 is connected to the cathode of the eleventh diode D11, and the cathode of the twelfth diode D12 is connected to the cathode of the ninth diode D9.

[0178] Furthermore, a rectifier bridge structure is formed by the ninth diode D9, the tenth diode D10, the eleventh diode D11 and the twelfth diode D12 to convert the input AC signal into an ideal DC signal, providing a stable voltage source for the subsequent first voltage division detection unit.

[0179] Optionally, there is more than one way to implement the internal circuit structure of the voltage division detection function in the three power modules, such as Figure 8 The structure shown in the figure shows the circuit structure of one type of voltage divider detection unit that can implement the voltage divider detection function. The internal structure of the three voltage divider detection units is the same. The second voltage divider detection unit differs from the first voltage divider detection unit in that the signals at its two input terminals are different, resulting in a different output voltage signal from the second voltage divider detection unit. Similarly, the third voltage divider detection unit differs from the first voltage divider detection unit in that the signals at its two input terminals are different, resulting in a different output voltage signal. Only one type of the three voltage divider detection units is described here, and the other two types are not described in detail.

[0180] like Figure 8 The structure shown, the first voltage division detection unit 32, specifically includes:

[0181] an eighth resistor R8, a ninth resistor R9, a thirteenth diode D13 and a fifth electrolytic capacitor Cr5.

[0182] One end of the eighth resistor R8 is connected to the DC output end of the first rectifier and filter unit 31 and the positive electrode of the thirteenth diode D13 as the first input end of the first voltage divider detection unit 32, and the other end is connected to one end of the ninth resistor R9 and the positive electrode of the fifth electrolytic capacitor Cr5 as the output end of the first voltage divider detection unit 32; the other end of the ninth resistor R9 is connected to the DC input end of the first rectifier and filter unit 31 and the negative electrode of the fifth electrolytic capacitor Cr5 as the second input end of the first voltage divider detection unit 32, and the negative electrode of the thirteenth diode D13 is connected to the power supply voltage.

[0183] Furthermore, by dividing the voltage through the eighth resistor R8 and the ninth resistor R9 and filtering by the fifth electrolytic capacitor Cr5 , a more stable voltage source is obtained to supply power to the internal circuit of the device where the system is located.

[0184] according to Figure 4 The structure shown is the zero-ignition switch group 24 in the line detection control system, and the specific structure includes:

[0185] The fourth relay K-LN-1, the fifth relay K-LN-2 and the sixth relay K-LN-3.

[0186] The first input end of the fourth relay K-LN-1 is connected to the first node A as the first input end of the zero-ignition switch group 24, the second input end is connected to the second node B as the second input end of the zero-ignition switch group 24, the first output end is connected to the first detection point P as the first output end of the zero-ignition switch group 24, and the second output end is connected to the second detection point Q as the second output end of the zero-ignition switch group 24; the first input end of the fifth relay K-LN-2 is connected to the first node A, the second input end is connected to the third node C as the third input end of the zero-ignition switch group 24, the first output end is connected to the first detection point P, and the second output end is connected to the second detection point Q; the first input end of the sixth relay K-LN-3 is connected to the second node B, the second input end is connected to the third node C, the first output end is connected to the first detection point P, and the second output end is connected to the second detection point Q.

[0187] according to Figure 4 The structure shown is the communication switch group 25 in the line detection control system, and the specific structure includes:

[0188] The seventh relay KC-1, the eighth relay KC-2 and the ninth relay KC-3.

[0189] The input end of the seventh relay KC-1 is connected to the first node A as the first input end of the communication switch group 25, and the output end is connected to the third detection point M as the output end of the communication switch group 25 and the output end of the eighth relay KC-2 and the output end of the ninth relay KC-3; the input end of the eighth relay KC-2 is connected to the second node B as the second input end of the communication switch group 25; the input end of the ninth relay KC-3 is connected to the third node C as the third input end of the communication switch group 25.

[0190] In one possible example scenario, three power modules output three voltage signals. The two nodes connected by the line corresponding to the high-level output can be determined to be the neutral and live wires, resulting in the third node being the communication line. The high-level output signal controls the internal switches of the neutral and live switch groups to close, thereby outputting the voltages at the first and second detection points. Simultaneously, the high-level output signal controls the internal switches of the communication switch group to close, thereby outputting the third detection point, which is the line where the identified communication line is located.

[0191] For example, the first power module outputs a high-level first output signal e1, which in turn controls the fourth relay K-LN-1 to close, connecting the neutral and live wires to the subsequent internal power supply for the entire device. Controlled by the first output signal e1, the seventh relay KC-1 energizes and closes, connecting the third detection point representing the communication line to the subsequent communication module. The other relays remain normally open. By controlling the neutral and live switch groups and the communication switch group, the system's output signal is controlled.

[0192] according to Figure 5 The structure shown is the zero line detection module 13 in the line detection control system, and the specific structure includes:

[0193] a tenth relay KS, a first resistor R1, a first electrolytic capacitor Cr1, a first diode D1, a second resistor R2, an optocoupler isolator U, a third resistor R3, a second diode D2, and a second electrolytic capacitor Cr2.

[0194] The input end of the tenth relay KS is connected to the first detection point P as the input end of the zero line detection module 13, and the output end is connected to one end of the first resistor R1; the other end of the first resistor R1 is connected to the positive electrode of the first electrolytic capacitor Cr1, one end of the second resistor R2 and the first pin of the optocoupler isolator U; the negative electrode of the first electrolytic capacitor Cr1 is connected to the positive electrode of the first diode D1, the other end of the second resistor R2 and the second pin of the optocoupler isolator U, and the negative electrode of the first diode D1 is connected to the device casing where the system is located; the third pin of the optocoupler isolator U is connected to one end of the third resistor R3 and the system control module MCU as the output end of the zero line detection module 13, and the fourth pin is connected to the first ground terminal GND; the negative electrode of the second diode D2 is connected to the other end of the third resistor R3, the positive electrode is connected to the positive electrode of the second electrolytic capacitor Cr2 and the communication power supply VCCA, and the negative electrode of the second electrolytic capacitor Cr2 is connected to the second ground terminal GND.

[0195] In a possible example scenario, the system control module MCU outputs the first control signal en-2, controls the tenth relay KS to close, starts the zero line identification detection, and feeds back the output signal en-1 to the system control module MCU. If the output signal en-1 is low, the system control module MCU outputs the second control signal en as a low level signal; if the output signal en-1 is high, the second control signal en output by the system control module MCU is a high level signal. At this point, the zero line detection is completed, the system control module MCU outputs the first control signal en-2, controls the tenth relay KS to disconnect, and ends the zero line detection process. After the subsequent identification of the neutral, live, and communication lines, the system operates normally, the tenth relay KS remains normally open, and no zero line detection is performed. After the system equipment is powered off again, it is powered on and the zero line detection is performed again. After one zero line detection, the identification of the zero line is completed.

[0196] Optionally, the internal implementation circuit of the neutral line detection module has more than one connection relationship as described above. The first diode D1 can also be placed on both sides of the tenth relay KS to also implement the neutral line detection function.

[0197] according to Figure 6 The structure shown is the communication power supply unit 26 in the line detection control system, and the specific structure includes:

[0198] The fourth power frequency transformer T4, the first rectifier bridge Z and the third electrolytic capacitor Cr3.

[0199] One side of the primary coil of the fourth industrial frequency transformer T4 is connected to the first detection point P as the first input end of the communication power supply unit 26, and the other side of the primary coil is connected to the second detection point Q as the second input end of the communication power supply unit 26. One side of the secondary coil is connected to one end of the alternating current of the first rectifier bridge Z, and the other side of the secondary coil is connected to the other end of the alternating current of the first rectifier bridge Z; the output end of the direct current of the first rectifier bridge Z is connected to the positive electrode of the third electrolytic capacitor Cr3, the input end of the direct current is connected to the negative electrode of the third electrolytic capacitor Cr3 and the output end of the neutral line selection unit 27, and the positive electrode of the third electrolytic capacitor Cr3 is connected to the third node M as the output end of the communication power supply unit 26.

[0200] according to Figure 6 The structure shown is the neutral line selection unit 27 in the line detection control system, and the specific structure includes:

[0201] The third diode D3, the fourth diode D4, the eleventh relay KN-1 and the twelfth relay KN-2.

[0202] The positive electrode of the third diode D3 is connected to the second detection point Q, and the negative electrode is connected to the input end of the eleventh relay KN-1; the output end of the eleventh relay KN-1 is connected to the second output end of the communication power supply unit 26 as the output end of the neutral line selection unit 27; the positive electrode of the fourth diode D4 is connected to the first node A and the input end of the neutral line detection module 13 as the first input end of the neutral line selection unit 27, and the negative electrode is connected to the input end of the twelfth relay KN-2; the output end of the twelfth relay KN-2 is connected to the output end of the eleventh relay KN-1.

[0203] like Figure 6As shown, in a possible example scenario, the neutral, live, and communication lines are randomly connected to the equipment where the system is located to power the power module and obtain three output signals. The obtained output signals control the closure of the corresponding switches inside the adjustment switch group, and output three detection points representing the lines where the neutral, live, and communication lines are located. Under the control of the first monitoring point and the second monitoring point, the fourth industrial frequency transformer starts to work and outputs the transformed AC power, and a stable DC communication power supply VCCA is obtained under the rectification and filtering action of the first rectifier bridge Z and the third electrolytic capacitor Cr3. At the same time, after the adjustment switch group is closed, the system control module MCU is powered on and controls the neutral line detection module 13 to perform neutral line identification detection. When the neutral line detection is completed, the system control module MCU obtains the detection result, controls the neutral line detection module to stop identification detection, and controls the closing state of the eleventh relay KN-1 and the twelfth relay KN-2. For example, when it is determined that the line where the first detection point P is located is the neutral line, the system control module MCU controls the eleventh relay KN-1 to close, and connects the line where the first detection point P representing the neutral line is located to the output end of the communication power supply unit 26, and the other end is connected to the third detection point M representing the communication line that has been detected to realize communication power supply.

[0204] according to Figure 7 The structure shown is the power control module 16 in the line detection control system, and the specific structure includes:

[0205] a fifth diode D5, a sixth diode D6, a seventh diode D7, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a first capacitor C1, a first transistor Q1, a thirteenth relay VCC and an eighth diode D8.

[0206] The anode of the fifth diode D5 is connected to the first output terminal of the power module 11 as the first end of the power control module 16, and the cathode is connected to the cathode of the sixth diode D6, the cathode of the seventh diode D7, one end of the fourth resistor R4, one end of the fifth resistor R5 and one end of the first capacitor C1; the anode of the sixth diode D6 is connected to the second output terminal of the power module 11 as the second end of the power control module 16, and the anode of the seventh diode D7 is connected to the third output terminal of the power module 11 as the third end of the power control module 16; the other end of the fourth resistor R4 is connected to the other end of the first capacitor C1, one end of the sixth resistor R6, the emitter of the first transistor Q1 and the third ground terminal GND; the other end of the sixth resistor R6 is connected to the other end of the fifth resistor R5 and the base of the first transistor Q1; the first transistor Q1 The collector is connected to the anode of the eighth diode D8 and the first input terminal of the thirteenth relay VCC; the cathode of the eighth diode D8 is connected to the first output terminal of the thirteenth relay VCC, the second output terminal of the thirteenth relay VCC and the power supply voltage VCC; the second input terminal of the thirteenth relay VCC is connected to the communication power supply VCCA.

[0207] like Figure 7 In the structure shown, in a possible example scenario, when the internal switches of the zero-ignition switch group are closed accordingly, the neutral line detection is started. Since one of the first output signal e1, the first output signal e2, and the first output signal e3 is at a high level, under the action of the fifth diode D5, the sixth diode D6, the seventh diode D7, the fourth resistor R4, the fifth resistor R5, the sixth resistor R6, the first capacitor C1, voltage division and current limiting, the first transistor Q1 is turned on, controlling the thirteenth relay VCC to be closed, the neutral line detection power supply is powered on, and the neutral line detection starts to work.

[0208] Optionally, according to Figure 9 The structure shown is the zero line drive module 28 in the line detection control system, and the specific structure includes:

[0209] a fourteenth diode D14, a second capacitor C2, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, a second transistor Q2, a third transistor Q3, a tenth relay KS and a fifteenth diode D15.

[0210] The anode of the fourteenth diode D14 is connected to the first output terminal of the system control module MCU as the input terminal of the neutral line driving module 81, the cathode is connected to one end of the second capacitor C2 and one end of the tenth resistor R10, the other end of the tenth resistor R10 is connected to one end of the eleventh resistor and the base of the second transistor Q2, the other end of the second capacitor C2 is connected to the other end of the eleventh resistor R11 and the emitter of the second transistor Q2, the collector of the second transistor Q2 is connected to one end of the twelfth resistor R12 and one end of the thirteenth resistor R13, and the other end of the twelfth resistor R12 is connected to the power supply voltage VCC; the other end of the thirteenth resistor R13 is connected to one end of the fourteenth resistor R14 and the base of the third transistor Q3, the other end of the fourteenth resistor R14 is connected to the power supply voltage VCC, the emitter of the third transistor Q3 is connected to the sixth ground terminal GND, and the collector is connected to the anode of the fifteenth diode D15 and the input terminal of the tenth relay KS; the cathode of the fifteenth diode D15 and the output terminal of the tenth relay KS are connected to the power supply voltage VCC.

[0211] Optionally, according to Figure 9 The structure shown is the communication driver module 29 in the line detection control system, and the specific structure includes:

[0212] Protection unit 291, eleventh relay KN-1, inversion protection unit 292 and twelfth relay KN-2.

[0213] The input end of the protection unit 291 and the input end of the inverted protection unit 292 are connected to the second output end of the system control module MCU as the input end of the communication driving module 29, the output end of the protection unit 291 is connected to the input end of the eleventh relay KN-1, and the output end of the eleventh relay KN-1 is connected to the communication power supply VCCA; the output end of the inverted protection unit 292 is connected to the input end of the twelfth relay KN-2, and the output end of the twelfth relay KN-2 is connected to the communication power supply VCCA.

[0214] according to Figure 9 The diagram shows a possible example scenario in which the system control module MCU outputs a first output signal en-2, which controls the closure of the tenth relay KS and initiates neutral line detection. After the neutral line detection output signal en-1, the system control module MCU outputs a signal en-2, which controls the opening of the tenth relay KS and terminates neutral line detection. Simultaneously, the system control module MCU outputs a signal en, which has the same potential as signal en-1. This signal en controls the closure of the eleventh relay KN-1 and the twelfth relay KN-2, thereby controlling the neutral line selection unit to select the neutral line, achieving the technical effect of aligning the neutral and live lines.

[0215] An embodiment of the present invention provides a line detection and control system that randomly connects neutral, live, and communication lines to the system's equipment to power a power supply module, thereby generating communication power. This system controls the closure of switches within the rectifying switch group, thereby activating the system control module. The system control module controls the tenth relay to detect the neutral line and the eleventh and twelfth relays to select the neutral line, providing the communication power supply unit with the correct neutral and communication lines, thereby outputting a stable communication voltage. This achieves the technical effect of identifying, detecting, and controlling the neutral, live, and communication lines of the system's equipment.

[0216] Figure 10 The present invention provides a flow chart of a line detection control method using a line detection control system. The present invention provides a line detection control method based on the above line detection control system. Figure 10 The diagram provided is for a method of performing line detection using the above system, specifically as follows:

[0217] 101. When the first node, the second node and the third node of the line detection and control system are randomly connected to the connection ports of three lines of the device where the system is located, a control signal is generated through the power supply module, and the lines include: a neutral line, a live line and a communication line.

[0218] The power module can be understood as providing an internal voltage source for the system's devices. The power module itself consists of multiple power modules, each with the same basic circuit structure. The difference lies in the input terminals connecting to two different nodes, which in turn output different control signals.

[0219] Furthermore, according to the pre-set connection rules between the power supply module and the neutral, live and communication lines, a first output signal, a second output signal and a third output signal representing the control signal are obtained;

[0220] The preset rule is that the power module obtains a high level signal when connected to the neutral line and the live line, obtains a low level signal when connected to the neutral line and the communication line, and obtains a low level signal when connected to the live line and the communication line.

[0221] 102. Control the adjustment switch group through the control signal and output the detection signal.

[0222] Furthermore, according to the obtained control signal, the corresponding switches of the zero-ignition switch group in the adjustment switch group are driven to close, and at the same time, the corresponding switches of the communication switch group in the adjustment switch group are driven to close; based on the closure of the corresponding switches of the adjustment switch group, the first detection signal, the second detection signal and the third detection signal representing the detection signal are output; and the communication line detection result is determined according to the third detection signal.

[0223] Among them, the control signal includes three different output signals. Each control signal passes through the corresponding drive module to control the two internal switches of the adjustment switch group. According to the pre-set connection rules, when the control signal is at a high level, the internal switch of the corresponding adjustment switch group is controlled to be closed to obtain the corresponding detection signal.

[0224] 103. Determine a detection result of the communication line according to the detection signal.

[0225] Furthermore, according to the pre-set connection rules, a high-level signal is obtained when the power supply module is connected to the neutral wire and the live wire, a low-level signal is obtained when it is connected to the neutral wire and the communication line, and a low-level signal is obtained when it is connected to the live wire and the communication line. The control signal that outputs the high-level signal can be used to control the adjustment switch group to close the internal switch, and the corresponding output represents that the line where the third monitoring point of the communication line is located is the communication line, and then the connection line corresponding to the third detection signal is determined to be the line where the communication line is located.

[0226] 104. Perform a neutral line detection on the detection signal to obtain detection results of the neutral line and the live line.

[0227] Furthermore, after the system control module outputs a neutral line detection drive signal, the neutral line detection process is initiated. At the end of the neutral line detection process, a neutral line detection result is obtained and a low-level signal is output. This low-level signal is fed back to the system control module, which then outputs a neutral line detection completion signal, disconnecting the neutral line detection state and maintaining this disconnected state until power is applied again. After the neutral line detection is completed, the system is disconnected from the device housing, reducing leakage current and mitigating safety risks.

[0228] Furthermore, when the neutral and live wire detection results indicate that the neutral and live wire circuits of the system device are consistent with the neutral and live wire circuits represented by the first detection signal and the second detection signal, it is determined that the neutral and live wire connections are correct, and thus the system device can operate normally. When the neutral and live wire detection results indicate that the neutral and live wire circuits of the system device are inconsistent with the neutral and live wire circuits represented by the first detection signal and the second detection signal, the neutral wire selection module switches the neutral and live wire circuits represented by the first detection signal and the second detection signal to be consistent with the neutral and live wire circuits of the system device.

[0229] An embodiment of the present invention provides a line detection control method using a line detection control system. When the first node, the second node, and the third node of the line detection control system are randomly connected to the connection ports of three lines of the equipment where the system is located, a control signal is generated by a power supply module, and the lines include: a neutral line, a live line, and a communication line; the control signal is used to control the adjustment switch group to output a detection signal; the detection result of the communication line is determined according to the detection signal; the detection signal is subjected to neutral line detection to obtain the detection results of the neutral line and the live line, thereby achieving the technical effect of identifying, detecting, and controlling the neutral line, live line, and communication line of the equipment where the system is located.

[0230] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A line detection control system, characterized in that: include: Power supply module, adjustment switch group, neutral line detection module, system control module, neutral line selection module and power supply control module; The first input terminal of the power supply module is connected to the first node, the second input terminal is connected to the second node, the third input terminal is connected to the third node, the first output terminal is connected to the first terminal of the power control module, the second output terminal is connected to the second terminal of the power control module, and the third output terminal is connected to the third terminal of the power control module; The first input terminal of the regulating switch group is connected to the first node, the second input terminal is connected to the second node, the third input terminal is connected to the third node, the first output terminal of the regulating switch group is connected to the first detection point, the second output terminal is connected to the second detection point, and the third output terminal is connected to the third detection point; The input end of the zero line detection module is connected to the first detection point, and the output end is connected to the input end of the system control module; The first input terminal of the neutral line selection module is connected to the first detection point, the second input terminal is connected to the second detection point, and the output terminal is connected to the third detection point; The zero line detection module includes: a tenth relay, a first resistor, a first electrolytic capacitor, a first diode, a second resistor, an optocoupler isolator, a third resistor, a second diode and a second electrolytic capacitor; The input end of the tenth relay is connected to the first detection point as the input end of the neutral line detection module, and the output end is connected to one end of the first resistor; The other end of the first resistor is connected to the positive electrode of the first electrolytic capacitor, one end of the second resistor, and the first pin of the optocoupler isolator; The cathode of the first electrolytic capacitor is connected to the anode of the first diode, the other end of the second resistor, and the second pin of the optocoupler isolator, and the cathode of the first diode is connected to the housing of the device where the system is located; The third pin of the optocoupler isolator is connected to one end of the third resistor and the system control module as the output end of the zero line detection module, and the fourth pin is connected to the first ground end; The cathode of the second diode is connected to the other end of the third resistor, the anode of the second diode is connected to the anode of the second electrolytic capacitor and the power supply voltage generated by the power supply module, and the cathode of the second electrolytic capacitor is connected to the second ground terminal; The neutral line selection module includes: a communication power supply unit and a neutral line selection unit, the communication power supply unit is used to provide an internal voltage source for the system, and the neutral line selection unit is used to select and connect the neutral line; The first input end of the communication power supply unit is connected to the first detection point as the first input end of the neutral line selection module, the second input end is connected to the second detection point as the second input end of the neutral line selection module, the first output end is connected to the third detection point as the output end of the neutral line selection module, and the second output end is connected to the output end of the neutral line selection unit; The first input end of the neutral line selection unit is connected to the first detection point and the input end of the neutral line detection module, and the second input end is connected to the second detection point.

2. The system according to claim 1, wherein: The power supply module is used to provide a stable voltage source to the system; The input end of the adjustment switch group is connected to the power supply module for inputting the voltage source provided by the system, and the output end is connected to the neutral line detection module and the neutral line selection module for outputting the detection signal representing the neutral line and the live line to the neutral line detection module, and at the same time detecting the detection signal representing the communication line, and providing the detection signal representing the communication line to the neutral line selection module; The neutral line detection module is used to identify and detect the neutral line and the live line; The neutral line selection module is used to connect the neutral line after identification and detection, and provide a voltage source for the internal circuit of the system; The power control module is connected to the power module and is used to control the power voltage generated by the power module; The system control module is connected to the zero line detection module and the zero line selection module, and is used to control the start and end of the zero line detection, and control the zero line selection module to perform zero line selection processing.

3. The system according to claim 1, wherein: The power supply module includes: a first power supply module, a second power supply module and a third power supply module; The first input terminal of the first power supply module is connected to the first node as the first input terminal of the power supply module, the second input terminal is connected to the second node as the second input terminal of the power supply module, and the first signal output terminal is connected to the first terminal of the power control module as the first output terminal of the power supply module; The first input terminal of the second power supply module is connected to the first node, the second input terminal is connected to the third node as the third input terminal of the power supply module, and the second signal output terminal is connected to the second terminal of the power supply control module as the second output terminal of the power supply module; The first input end of the third power supply module is connected to the second node, the second input end is connected to the third node, and the third signal output end is connected to the third end of the power control module as the third output end of the power supply module.

4. The system according to claim 3, characterized in that The first power supply module includes: a first relay, a first power frequency transformer, a first rectifier and filter unit, and a first voltage division detection unit electrically connected in sequence; The first input terminal of the first relay is connected to the first node as the first input terminal of the first power module, the second input terminal of the first relay is connected to the second node as the second input terminal of the first power module, and the output terminal of the first voltage division detection unit is connected to the first terminal of the power control module as the first signal output terminal of the first power module; The second power supply module includes: a second relay, a second power frequency transformer, a second rectifier and filter unit, and a second voltage division detection unit electrically connected in sequence; The first input terminal of the second relay is connected to the first node as the first input terminal of the second power module, the second input terminal is connected to the third node as the second input terminal of the second power module, and the output terminal of the second voltage division detection unit is connected to the second terminal of the power control module as the second signal output terminal of the second power module; The third power supply module includes: a third relay, a third power frequency transformer, a third rectifier and filter unit, and a third voltage division detection unit electrically connected in sequence; Among them, the first input end of the third relay is connected to the second node as the first input end of the third power supply module, the second input end is connected to the third node as the second input end of the third power supply module, and the output end of the third voltage divider detection unit is connected to the third end of the power control module as the third signal output end of the third power supply module.

5. The system according to claim 1, wherein: The adjustment switch group includes: a zero-fire switch group and a communication switch group, the zero-fire switch group is used to select the line where the neutral line and the live line are located, and the communication switch group is used to select the line where the communication line is located; The first input end of the zero-ignition switch group is connected to the first node as the first input end of the adjustment switch group, the second input end is connected to the second node as the second input end of the adjustment switch group, the third input end is connected to the third node as the third input end of the adjustment switch group, the first output end is connected to the first detection point as the first output end of the adjustment switch group, and the second output end is connected to the second detection point as the second output end of the adjustment switch group; The first input end of the communication switch group is connected to the first node, the second input end is connected to the second node, the third input end is connected to the third node, and the output end is connected to the third detection point as the third output end of the adjustment switch group.

6. The system according to claim 5, characterized in that The zero-ignition switch group includes: a fourth relay, a fifth relay and a sixth relay; The first input end of the fourth relay is connected to the first node as the first input end of the zero-ignition switch group, the second input end is connected to the second node as the second input end of the zero-ignition switch group, the first output end is connected to the first detection point as the first output end of the zero-ignition switch group, and the second output end is connected to the second detection point as the second output end of the zero-ignition switch group; The first input terminal of the fifth relay is connected to the first node, the second input terminal is connected to the third node as the third input terminal of the zero-ignition switch group, the first output terminal is connected to the first detection point, and the second output terminal is connected to the second detection point; The first input terminal of the sixth relay is connected to the second node, the second input terminal is connected to the third node, the first output terminal is connected to the first detection point, and the second output terminal is connected to the second detection point; The communication switch group includes: a seventh relay, an eighth relay and a ninth relay; The input end of the seventh relay is connected to the first node as the first input end of the communication switch group, and the output end of the seventh relay is connected to the third detection point together with the output end of the eighth relay and the output end of the ninth relay as the output end of the communication switch group; The input end of the eighth relay is connected to the second node as the second input end of the communication switch group; The input end of the ninth relay is connected to the third node as the third input end of the communication switch group.

7. The system according to claim 1, wherein: The communication power supply unit includes: a fourth power frequency transformer, a first rectifier bridge and a third electrolytic capacitor; One side of the primary coil of the fourth power frequency transformer is connected to the first detection point as the first input end of the communication power supply unit, the other side of the primary coil is connected to the second detection point as the second input end of the communication power supply unit, one side of the secondary coil is connected to one end of the alternating current of the first rectifier bridge, and the other side of the secondary coil is connected to the other end of the alternating current of the first rectifier bridge; The output end of the DC power of the first rectifier bridge is connected to the positive electrode of the third electrolytic capacitor, the input end of the DC power is connected to the negative electrode of the third electrolytic capacitor and the output end of the neutral line selection unit, and the positive electrode of the third electrolytic capacitor is connected to the third node as the output end of the communication power supply unit.

8. The system according to claim 1, wherein: The neutral line selection unit includes: a third diode, a fourth diode, an eleventh relay and a twelfth relay; The anode of the third diode is connected to the second detection point, and the cathode is connected to the input end of the eleventh relay; The output end of the eleventh relay is connected to the second output end of the communication power supply unit as the output end of the neutral line selection unit; The anode of the fourth diode is connected to the first node and the input end of the neutral line detection module as the first input end of the neutral line selection unit, and the cathode is connected to the input end of the twelfth relay; The output terminal of the twelfth relay is connected to the output terminal of the eleventh relay.

9. The system according to claim 1, wherein: The power control module includes: a fifth diode, a sixth diode, a seventh diode, a fourth resistor, a fifth resistor, a sixth resistor, a first capacitor, a first transistor, a thirteenth relay and an eighth diode; The anode of the fifth diode is connected to the first output terminal of the power supply module as the first end of the power control module, and the cathode is connected to the cathode of the sixth diode, the cathode of the seventh diode, one end of the fourth resistor, one end of the fifth resistor, and one end of the first capacitor; The anode of the sixth diode is connected to the second output terminal of the power module as the second end of the power control module, and the anode of the seventh diode is connected to the third output terminal of the power module as the third end of the power control module; The other end of the fourth resistor is connected to the other end of the first capacitor, one end of the sixth resistor, the emitter of the first transistor and the third ground terminal; The other end of the sixth resistor is connected to the other end of the fifth resistor and the base of the first transistor; The collector of the first transistor is connected to the anode of the eighth diode and the first input terminal of the thirteenth relay; The cathode of the eighth diode is connected to the first output terminal of the thirteenth relay, the second output terminal of the thirteenth relay and the power supply voltage; The second input end of the thirteenth relay is connected to a power supply in the device where the system is located.

10. The system according to claim 1, wherein: The system further includes: a neutral line driving module and a communication driving module, wherein the neutral line driving module is used to drive the neutral line detection module to turn on, and the communication driving module is used to drive the neutral line selection module to turn on; The neutral line driving module is connected to a first output terminal of the system control module, and the communication driving module is connected to a second output terminal of the system control module.

11. A line detection control method using the line detection control system according to claim 1, characterized in that: include: When the first node, the second node and the third node of the line detection and control system are randomly connected to the connection ports of three lines of the device where the system is located, a control signal is generated by the power supply module, and the lines include: a neutral line, a live line and a communication line; The adjustment switch group is controlled by the control signal to output a detection signal; determining a detection result of the communication line according to the detection signal; Performing a neutral line detection on the detection signal to obtain detection results of the neutral line and the live line.

12. The method according to claim 11, characterized in that The power module generates a control signal, including: Obtaining a first output signal, a second output signal, and a third output signal representing the control signal according to a preset connection rule between the power supply module and the neutral, live, and communication lines; The preset rule is that the power module obtains a high level signal when connected to the neutral line and the live line, obtains a low level signal when connected to the neutral line and the communication line, and obtains a low level signal when connected to the live line and the communication line.

13. The method according to claim 11, characterized in that The controlling the adjustment switch group by the control signal to output a detection signal includes: According to the obtained control signal, the corresponding switches of the zero-ignition switch group in the adjustment switch group are driven to close, and the corresponding switches of the communication switch group in the adjustment switch group are driven to close at the same time; outputting a first detection signal, a second detection signal, and a third detection signal representing the detection signal based on closing of corresponding switches of the adjustment switch group; Determining the detection result of the communication line according to the detection signal specifically includes: The communication line detection result is determined according to the third detection signal.

14. The method according to claim 11, characterized in that The performing a zero line detection on the detection signal to obtain the detection results of the zero line and the live line includes: After the system control module outputs the zero line detection drive signal, the zero line detection process is started; When the neutral line detection process is completed, the detection results of the neutral line and the live line are obtained, and the system control module outputs a neutral line detection completion signal, disconnects the neutral line detection state, and maintains the disconnected state before power is turned on again.

15. The method according to claim 11, characterized in that The method comprises: When the detection results of the neutral wire and the live wire are that the neutral wire and the live wire lines of the device where the system is located are inconsistent with the neutral wire and the live wire lines represented by the first detection signal and the second detection signal, the neutral wire selection module is used to switch the neutral wire and the live wire lines represented by the first detection signal and the second detection signal to be consistent with the neutral wire and the live wire lines of the device where the system is located.

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