Split type relay device applied to concentrator remote communication

Abstract

The utility model relates to a split type relay device applied to remote communication of a concentrator, which consists of a near-end module and a far-end module which are connected through an RJ45 network cable. The near-end module and the far-end module each comprise a shell and a mainboard PCB assembly, and the mainboard PCB assemblies are arranged in the shells. The near-end module replaces an original 4G communication module of the concentrator and is installed at the same position, and the far-end module is correctly connected to the original 4G communication module of the concentrator and is installed at a position where communication signals are strong. According to the utility model, relay forwarding of remote communication of the concentrator is realized, for concentrators with 4G remote communication failure caused by special positions, the concentrator can be successfully connected with a master station and the communication is stable by installing the split type relay device provided by the utility model, so that the normal operation of an electricity consumption information acquisition system is maintained.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of communication equipment especially relates to a split type relay device for concentrator remote communication. BACKGROUND

[0002] Electricity information collection and management is the core technical measure for modern power system to realize safe, orderly, reliable and intelligent power utilization. As the key node of electricity information collection system, the concentrator undertakes important functions such as real-time monitoring of power grid operation state, collection of terminal equipment data and realization of two-way communication, and its performance directly affects the reliability and efficiency of the whole electricity information collection system. The communication mode of the existing concentrator is to directly communicate with the power master station system through the 4G communication module to realize data transmission. However, in the actual operation process, due to the binding of the installation position of the concentrator and the distribution transformer, the 4G communication performance of the concentrator is often restricted by various objective factors. First, geographical environmental factors (such as mountainous areas and underground distribution rooms) will cause signal attenuation; second, the coverage blind area problem of mobile communication base station is widespread; third, the multipath effect in urban areas with dense buildings will also affect the signal quality. These factors together cause the concentrator to often appear the situation of weak remote wireless communication signal or even complete interruption, which seriously affects the real-time and integrity of data collection and brings great challenges to the normal operation of the electricity information collection system. Therefore, it is urgent to design a relay device that can be installed on the remote communication interface of the existing concentrator to ensure the stable connection between the concentrator and the power master station system. SUMMARY

[0003] In view of the above problem that the concentrator remote wireless communication fails due to special position, the utility model patent provides a split type relay device for concentrator remote communication, which realizes the relay forwarding of concentrator remote communication, ensures the successful connection between the concentrator and the master station, and guarantees the normal operation of the electricity information collection system.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A split type relay device applied to concentrator remote communication, comprising a near-end module and a far-end module, the near-end module comprises a near-end mainboard PCB assembly, and the far-end module comprises a far-end mainboard PCB assembly; the near-end mainboard PCB assembly comprises a near-end interface, a near-end RS422 communication module, a near-end MCU processing module and a near-end power management module, a near-end state transmission module and a near-end serial port switching module connected with the near-end MCU processing module, a remote communication module interface of the concentrator is connected with the near-end power management module, the near-end state transmission module and the near-end serial port switching module, the near-end serial port switching module is further connected with the near-end RS422 communication module, and the near-end interface is connected with the near-end power management module and the near-end RS422 communication module respectively; the far-end mainboard PCB assembly comprises a far-end interface, a far-end RS422 communication module, a far-end MCU processing module and a far-end power management module, a far-end state transmission module and a far-end serial port switching module connected with the far-end MCU processing module, a 4G communication module of the concentrator is connected with the far-end power management module, the far-end state transmission module and the far-end serial port switching module, the far-end serial port switching module is further connected with the far-end RS422 communication module, and the far-end interface is connected with the far-end power management module and the far-end RS422 communication module respectively; and the near-end interface and the far-end interface are connected through a network cable.

[0006] The utility model has the advantages of the following beneficial effects:

[0007] The utility model relates to a split type relay device applied to concentrator remote communication, which is composed of a near-end module and a far-end module, and the modules are connected through an RJ45 network cable. The near-end module replaces the original 4G communication module of the concentrator and is installed at the same position, and the far-end module correctly connects the original 4G communication module of the concentrator and is installed at a position with strong communication signals. The utility model realizes relay forwarding of concentrator remote communication, and for a concentrator with special location leading to 4G remote communication failure, the split type relay device of the utility model can successfully connect the concentrator with the main station and realize stable communication, thereby maintaining the normal operation of the power information collection system. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 It is an overall circuit structure schematic diagram of the utility model;

[0009] Figure 2 It is a schematic diagram of the near-end module of the utility model;

[0010] Figure 3 It is a schematic diagram of the far-end module of the utility model;

[0011] Figure 4 It is a schematic diagram of the far-end module installed with the 4G communication module of the utility model;

[0012] Figure 5 Circuit diagram of the voltage boosting module of the utility model;

[0013] Figure 6 Circuit diagram of the power supply merging processing module of the utility model;

[0014] Figure 7 RJ45 network cable pin function distribution schematic diagram of the utility model;

[0015] Figure 8 Pin connection schematic diagram of the near-end MCU of the utility model;

[0016] Figure 9 Pin connection schematic diagram of the near-end RS422 module of the utility model;

[0017] Figure 10 Schematic diagram of the near-end serial port switching module and the far-end serial port switching module of the utility model;

[0018] Figure 11 Schematic diagram of the far-end voltage reducing module of the utility model.

[0019] BRIEF DESCRIPTION OF DRAWINGS:

[0020] 10, first shell; 20, second shell; 21, accommodating groove; 30, 4G communication module. DETAILED DESCRIPTION

[0021] The utility model will be further explained in detail in combination with the drawings and specific embodiments:

[0022] Please refer to Figures 1 to 4 A split type relay device applied to concentrator remote communication, including near-end module and far-end module, the near-end module includes first shell 10 and near-end mainboard PCB assembly arranged in the first shell 10, the far-end module includes second shell 20 and far-end mainboard PCB assembly, a fixed cavity and accommodating groove 21 are arranged in the second shell 20.Second shell 20 is composed of flip cover and lower shell, the accommodating groove 21 is formed between the flip cover and the lower shell, the lower shell is composed of two layers of plate pieces, the fixed cavity is formed between the two layers of plate pieces, the far-end mainboard PCB assembly is arranged in the fixed cavity, and the 4G communication module 30 is installed in the accommodating groove 21.The near-end module and the far-end module are connected through RJ45 network cable.The near-end module is responsible for correctly converting the concentrator TTL level signal into RS-422 signal and boosting to transmit data to the far-end module by wire; the far-end module is responsible for correctly receiving the data of the near-end module and communicating with the power master station system through the original 4G communication module 30 of the concentrator installed on the far-end module, and transmitting the received data to the power master station system.

[0023] In order to better adapt to the original concentrator and the 4G communication module 30 on the concentrator, preferably, the structure of the first shell 10 is designed to be compatible with the structure of the original 4G communication module 30, so that the near-end module can directly replace the original 4G communication module 30 on the concentrator and be installed at the same position (the installation position of the original 4G communication module 30). A receiving groove 21 matched with the structure of the original 4G communication module 30 is arranged on the second shell 20 of the far-end module, so that the 4G communication module 30 can be conveniently connected to the far-end module, and then be mounted at a suitable position with stronger 4G communication signal.

[0024] Since the main board PCB circuit assembly of the near-end module and the far-end module has symmetry of one transmitting and one receiving, the same main board PCB assembly is used in the design of the two. The functions of the components used by the near-end module and the far-end module are described below.

[0025] The near-end main board PCB assembly includes a near-end interface, a near-end RS422 communication module, a near-end MCU processing module, and a near-end power management module, a near-end state transmission module and a near-end serial port switching module connected with the near-end MCU processing module. The remote communication module interface of the concentrator is connected with the near-end power management module, the near-end state transmission module and the near-end serial port switching module. The near-end serial port switching module is also connected with the near-end RS422 communication module, and the near-end interface is connected with the near-end power management module and the near-end RS422 communication module respectively.

[0026] More preferably, please refer to Figure 1 , Figure 5 and Figure 6 The near-end power management module includes a boost module and a power combining processing module. The input side of the boost module is connected with the 3.3V output end and the 4V output end of the remote communication module interface of the concentrator respectively, and the boost module boosts 3.3V to 6V and 4V to 12V and then inputs the power combining processing module. The power combining processing module is responsible for receiving various power inputs and selecting the highest voltage to output to the near-end interface. The boost module boosts 3.3V to 6V to supply power and communicate with the far-end module. The boost module can select a high-efficiency boost converter MT3608, with an input voltage of 2V~24V, a maximum output current of 2A, a highest output voltage of 28V and a highest efficiency of 97%. The remote communication module interface of the concentrator is originally used to connect the 4G communication module 30, and uses 2x15 double-row pins as connecting pieces to provide 3.3V and 4V power. When the concentrator does not detect the connection of the 4G communication module 30, the 4V power is off, and only 3.3V is provided, but the 3.3V current is small and cannot support the work of the 4G communication module 30. The near-end interface generally uses an RJ45 interface, please refer to Figure 7Wherein pin 1, pin 2 constitute RS422 differential receiving signal line, pin 3, pin 6 constitute RS422 differential transmission signal line. Therefore, pin 1, 2, 3, 6 combination constitute complete RS422 communication line. In addition, pin 4, pin 5 provide 12V power output, pin 7, pin 8 is used as ground wire.

[0027] The input side of the boost module is also connected with the proximal MCU processing module, and the 12V output end of the output side of the boost module is also connected with the proximal MCU processing module. Please refer to Figure 1 The proximal MCU processing module comprises a proximal voltage detection module and a proximal MCU. The input side of the proximal voltage detection module is connected with the 4V input end and the 12V output end of the boost module. The proximal voltage detection module divides the 4V voltage input and the 12V voltage input through a resistor and connects them to the A / D detection interface of the proximal MCU. Please refer to Figure 8 The proximal MCU selects an ARM chip HC32F003, the core of which adopts Cortex-M0+, supports 2K RAM, 16K FLASH, has a maximum frequency of 32MHz, supports multiple serial ports, SPI, I2C, integrates a 12-bit 1Msps high-precision ADC, and is provided with a built-in watchdog.

[0028] The proximal state transmission module comprises a concentrator control state detection module and a 4G communication state output module. The input side of the concentrator control state detection module is connected with the state control pin of the remote communication module interface, and the output side is connected with the proximal MCU. Referring to Table 1, the concentrator control state detection module detects the reset signal RST (pin 14) of the concentrator, the ON / OFF communication module control signal (pin 15), and the SIM card heating control signal PCTRL (pin 12), and the remote communication module interface of the concentrator provides these signals, which are connected to the proximal MCU through the concentrator control state detection module.

[0029] The input side of the 4G communication state output module is connected with the proximal MCU, and the output side is connected with the state recognition pin (pin 16-pin 20) of the remote communication module interface. The 4G communication state output module outputs the access state of the 4G communication module 30 from the proximal MCU to the concentrator, and informs the concentrator whether the 4G communication module 30 is accessed. If the 4G communication module 30 is accessed, the remote module sends information to the proximal MCU of the proximal module, the signal output by the proximal MCU is regulated to a low-level state signal through the 4G communication state output module, and then input to the concentrator, informing the concentrator that the 4G communication module 30 has been accessed. The concentrator control state detection module and the 4G communication state output module generally refer to a regulating circuit composed of resistors.

[0030] Table 1 Remote communication module interface pin definition.

[0031]

[0032] Please refer to Figure 9 The near-end RS422 communication module is responsible for converting serial port TTL level to RS422 standard interface, and can adopt SIT3491EESD chip, supporting voltage 3-5.5V, 256 nodes, 12Mbps full-duplex transceiver. The RS422 communication module is connected with TVS tube and self-recovery fuse for sending and receiving signals, increasing electrostatic and lightning impulse protection, ensuring stable communication, which is a common technical means in the field.

[0033] Please refer to Figure 10 The near-end serial port switching module switches the serial port communication channel according to the concentrator control state (the state detected by the concentrator control state detection module) and the concentrator serial port communication state (the serial port communication state obtained by connecting pin 5 and pin 6 of the near-end MCU with the remote communication module interface of the concentrator), and specifically includes the following two serial port communication channels: the near-end MCU serial port and the near-end RS422 communication module establish a communication channel, and the concentrator serial port and the near-end RS422 communication module establish a communication channel. The near-end serial port switching module is connected with the concentrator serial port (pin 5 and pin 6), the serial port of the near-end MCU and the near-end RS422 communication module. The near-end serial port switching module can adopt SN74LVC1G3157DBVR chip.

[0034] The near-end module further includes an external power supply interface connected with the power supply combination processing module. The purpose of setting the external power supply interface is to support external 12V power input when the concentrator has insufficient load capacity, to ensure normal operation of the device.

[0035] Preferably, the remote mainboard PCB assembly includes a remote interface, a remote RS422 communication module, a remote MCU processing module, and a remote power management module, a remote state transmission module and a remote serial port switching module connected with the remote MCU processing module. The 4G communication module 30 of the concentrator is connected with the remote power management module, the remote state transmission module and the remote serial port switching module. The remote serial port switching module is also connected with the remote RS422 communication module. The remote interface is connected with the remote power management module and the remote RS422 communication module respectively. The remote interface can also adopt RJ45 interface. The near-end interface and the remote interface are connected through RJ45 network cable.

[0036] Please refer to Figure 1The remote power management module includes a step-down module, a 4G power supply control module, and a linear regulator. The input side of the step-down module is connected to the remote interface and the remote MCU processing module, and the output side of the step-down module is connected to the remote MCU processing module, the linear regulator, and the 4G power supply control module. The step-down module reduces the input voltage (whether 6V or 12V) to 4V and then outputs it. Figure 11 As shown, the step-down module can use a high-efficiency DC / DC synchronous step-down converter chip (input voltage 4.5V~17V, maximum output current 3A), which is then connected to the 4G power supply control module and simultaneously inputs the 4V voltage into the remote MCU processing module. The linear regulator HT7533S is selected with an output current of 100mA to step down the 4V to 3.3V, which is then connected to the remote MCU processing module to power the remote MCU processing module. The 4G power supply control module is respectively connected to the remote MCU processing module and the 4G communication module 30 of the concentrator, and controls the connection and disconnection of the power supply of the 4G communication module 30 according to the instructions of the remote MCU. The 4G power supply control module can be composed of a control circuit composed of NMOS and PMOS transistors. The remote MCU controls the module to turn on and off the power supply of the 4G communication module 30. This power supply comes from the output of the step-down module. The 4G power supply control module is equivalent to a switch, but the on and off of this switch is controlled by the remote MCU.

[0037] The remote MCU processing module includes a remote voltage detection module and a remote MCU. The input side of the remote voltage detection module is connected to the input and output sides of the step-down module, and the output of the remote voltage detection module is connected to the remote MCU. The circuit structure and operating principle of the remote voltage detection module are the same as those of the local voltage detection module, requiring access to 12V and 4V power supplies from the remote power management module. The remote MCU also uses the same chip as the local MCU.

[0038] The remote state transmission module comprises a 4G state control module and a 4G communication state detection module. The input side of the 4G state control module is connected with the remote MCU, and the output side is connected with the 4G communication module 30. The input side of the 4G communication state detection module is connected with the 4G communication module 30, and the output side is connected with the remote MCU. The 4G communication state detection module detects the access state of the external 4G communication module 30 (a specified state pin is provided by the 4G communication module 30), and sends the access state of the 4G communication module 30 to the remote MCU. When the access state of the external 4G communication module 30 changes, the remote MCU controls the remote serial port switching module to switch the data transmission communication channel, and switches to establish a communication channel between the remote MCU serial port and the remote RS422 communication module. The remote MCU sends the state information of the 4G communication module 30 detected to the near-end module through the communication channel. The 4G state control module and the 4G communication state detection module generally refer to a conditioning circuit composed of resistors.

[0039] The remote RS422 communication module can adopt the same chip and working principle as the near-end RS422 communication module.

[0040] The remote serial port switching module is controlled by the remote MCU control channel, and switches the serial port communication channel according to the received state data frame and the detected 12V voltage state. Specifically, two communication channels are included: a communication channel is established between the remote MCU serial port and the remote RS422 communication, and a communication channel is established between the 4G communication module 30 and the remote RS422 communication module. The remote serial port switching module can adopt the same chip as the near-end serial port switching module.

[0041] The working process of the utility model is as follows:

[0042] Step 1, the near-end module is accessed into the concentrator, and the 3.3V power supply provided by the concentrator is used to power the near-end MCU, and the 3.3V power supply is boosted to 6V through the boost module, and the remote module is powered through the near-end interface. After the near-end MCU is powered on, the near-end serial port switching module is controlled to switch the communication link to the MCU serial port and the near-end RS422 communication module.

[0043] Step 2, the remote module is powered on. When the input voltage of the remote MCU processing module is 6V, it indicates that the concentrator does not start the 4V power supply. The remote MCU controls the remote serial port switching module to switch the communication link to the remote RS422 communication module connected to the remote RS422 communication module, and at the same time, the remote MCU controls the 4G power supply control module to disconnect the 4G communication module 30 power supply and the remote MCU detects the state signal of the 4G communication module 30 through the 4G communication state detection module. If the 4G communication module 30 is correctly connected, the remote MCU sends the 4G communication module 30 access state data frame to the near-end module through the remote RS422 communication module, specifically, the state data frame is transmitted to the near-end RS422 communication module through the remote interface, the connected network cable and the near-end interface, and then received by the near-end MCU.

[0044] Step 3, after the near-end module receives the state data frame of the 4G communication module 30 of the remote module, the near-end MCU sets the concentrator remote communication interface state pin (pin 16~20) through the 4G communication state output module, prompting the concentrator that the 4G communication module 30 has been connected.

[0045] Step 4, the concentrator controls the 4V power supply to be powered on, and the step-up module steps up the 4V to 12V to supply power to the remote module through the near-end interface, and at the same time, the near-end MCU controls the near-end serial port switching module to switch the communication link to the serial port of the concentrator and the near-end RS422 module communication, and the concentrator and the 4G communication module 30 start communication to transmit the data collected by the concentrator.

[0046] Step 5, because the concentrator 4V is powered on, the near-end module outputs 12V voltage to the remote interface and provides 12V voltage input for the remote voltage detection module, so the remote MCU controls the 4G power supply control module to be turned on, and the power output by the step-down module is supplied to the 4G communication module 30, and at the same time, the remote serial port switching module is controlled to switch the communication link to the external 4G communication module 30 and the remote RS422 communication module communication, realizing the information interaction between the serial port of the external 4G communication module 30 and the serial port of the concentrator.

[0047] Step 6, during the data transmission process, the concentrator control state detection module in the near-end module monitors the control pin signals of the concentrator (i.e. the pins 12, 14 and 15 of the concentrator) in real time. When the pin state changes, the near-end MCU controls the near-end serial port switching MCU serial port and the near-end RS422 communication module communication according to the idle sending of the concentrator serial port, sends the state data frame to the remote module, and after the sending is completed, switches to the near-end RS422 communication to the concentrator serial port. The remote MCU of the remote module receives the data sent by the near-end module in real time, analyzes the received data, detects the state data frame, and controls the corresponding pin state of the 4G communication module 30 through the 4G state control module according to the pin change of the concentrator.

[0048] It should be noted that the split type relay device provided by the utility model is the intermediate bridge after the concentrator and the 4G communication module 30 are separated, and the direct data transmission between the concentrator and the 4G communication module 30 and the direct detection of the state signal and the direct setting of the control signal are changed into indirect transmission and control through the near-end module and the far-end module. The working principle of the split type relay device of the utility model still follows the original mode between the concentrator and the 4G communication module 30 to carry out communication control and data transmission, just like the table 1 provided in the foregoing, the concentrator outputs different voltages, outputs control state signals and detects whether the 4G communication module 30 is connected, these are all known technologies, and the application mode of these pins is explicitly stated and enumerated application circuits in the data manual thereof, further, the MCU detection signal, the output signal and the signal output by the MCU as the control signal of the working state of the chip connected with the MCU are also the conventional technical means in the field. Therefore, after the split type relay device of the utility model is disclosed, the person skilled in the art can easily realize corresponding codes in combination with the data manual of each chip, data acquisition requirements and state control requirements, these codes are all simple control logic (determine the corresponding output according to the input, not a complex logic algorithm), and then the codes are written into the MCU.

[0049] The utility model relates to a split type relay device applied to concentrator remote communication, is composed of near-end module and far-end module, and is connected through RJ45 network cable between modules. The near-end module replaces the original 4G communication module 30 of the concentrator and is installed at the same position, and the far-end module correctly connects the original 4G communication module 30 of the concentrator and is installed at a position with strong communication signal. The utility model realizes the relay forwarding of the concentrator remote communication, and for the concentrator of a kind of 4G remote communication failure caused by special position, the concentrator and main station can be successfully connected and communication is stable by installing the split type relay device of the utility model, thereby maintaining the normal operation of power information acquisition system.

[0050] The above merely describes the specific implementation of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation using the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields, are all included in the patent protection range of the utility model.

Claims

1. A split relay device for concentrator remote communication, characterized by: The application relates to a 4G communication module, which comprises a proximal end module and a distal end module, the proximal end module comprises a proximal end main board PCB assembly and a first shell, the proximal end main board PCB assembly is arranged in the first shell; the distal end module comprises a distal end main board PCB assembly and a second shell, a fixing cavity and a containing groove are arranged in the second shell, the distal end main board PCB assembly is arranged in the fixing cavity, and a 4G communication module is arranged in the containing groove. The proximal end main board PCB assembly comprises a proximal end interface, a proximal end RS422 communication module, a proximal end MCU processing module, a proximal end power management module connected with the proximal end MCU processing module, a proximal end state transmission module and a proximal end serial port switching module; a remote communication module interface of a concentrator is connected with the proximal end power management module, the proximal end state transmission module and the proximal end serial port switching module; the proximal end serial port switching module is further connected with the proximal end RS422 communication module; and the proximal end interface is connected with the proximal end power management module and the proximal end RS422 communication module. The distal end main board PCB assembly comprises a distal end interface, a distal end RS422 communication module, a distal end MCU processing module, a distal end power management module connected with the distal end MCU processing module, a distal end state transmission module and a distal end serial port switching module; a 4G communication module of a concentrator is connected with the distal end power management module, the distal end state transmission module and the distal end serial port switching module; the distal end serial port switching module is further connected with the distal end RS422 communication module; and the distal end interface is connected with the distal end power management module and the distal end RS422 communication module. The proximal end interface and the distal end interface are connected through a network cable.

2. The split type repeater device for concentrator remote communication according to claim 1, characterized in that: The proximal end power management module comprises a voltage boosting module and a power combining processing module; the input side of the voltage boosting module is connected with a 3.3V output end and a 4V output end of a remote communication module interface of a concentrator; the voltage boosting module boosts 3.3V to 6V and boosts 4V to 12V and then inputs the power combining processing module; the input side of the voltage boosting module is further connected with the proximal end MCU processing module; the 12V output end of the output side of the voltage boosting module is further connected with the proximal end MCU processing module; and the power combining processing module selects the highest voltage to output to the proximal end interface.

3. A split type repeater device applied to remote communication of concentrator according to claim 2, characterized in that: The proximal end MCU processing module comprises a proximal end voltage detection module and a proximal end MCU; the input side of the proximal end voltage detection module is connected with the 4V input end and the 12V output end of the voltage boosting module; and the output of the proximal end voltage detection module is connected with the proximal end MCU.

4. The split repeater device for concentrator remote communication of claim 3, wherein: The proximal end state transmission module comprises a concentrator control state detection module and a 4G communication state output module; the input side of the concentrator control state detection module is connected with a state control pin of a remote communication module interface; the output side of the concentrator control state detection module is connected with the proximal end MCU; the input side of the 4G communication state output module is connected with the proximal end MCU; and the output side of the 4G communication state output module is connected with a state identification pin of the remote communication module interface.

5. The split repeater device for concentrator remote communication of claim 1, wherein: The remote power management module comprises a voltage reduction module, a 4G power supply control module and a linear voltage regulator, the input side of the voltage reduction module is connected with the remote interface and the remote MCU processing module, the output side of the voltage reduction module is connected with the remote MCU processing module, the linear voltage regulator and the 4G power supply control module, the voltage reduction module outputs after reducing the input voltage to 4V, the linear voltage regulator converts 4V to 3.3V to supply power to the remote MCU processing module, and the 4G power supply control module is connected with the remote MCU processing module and the 4G communication module of the concentrator respectively.

6. A split type repeater device for concentrator remote communication according to claim 5, wherein: The remote MCU processing module comprises a remote voltage detection module and a remote MCU, the input side of the remote voltage detection module is connected with the input side and the output side of the voltage reduction module, and the output of the remote voltage detection module is connected with the remote MCU.

7. A split type repeater device for concentrator remote communication according to claim 6, characterized in that: The remote state transmission module comprises a 4G state control module and a 4G communication state detection module, the input side of the 4G state control module is connected with the remote MCU, the output side is connected with the 4G communication module, the input side of the 4G communication state detection module is connected with the 4G communication module, and the output side is connected with the remote MCU.

8. The split repeater device for concentrator remote communication of claim 2, wherein: The near-end module further comprises an external power supply interface connected with the power supply combination processing module.

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