Online monitoring device based on network transmission

Abstract

The utility model relates to an online monitoring device based on network transmission. Comprising a cloud platform, a wireless intelligent terminal, a fault arc detector, a temperature sensor, an intelligent miniature circuit breaker, an electric leakage mutual inductor, a temperature and humidity sensor, a lora communication circuit, a two-bus communication circuit, a voltage and current acquisition circuit, a temperature electric leakage acquisition circuit, a 485 acquisition circuit, a 485 acquisition circuit with a power supply, a 4G circuit, an Ethernet circuit and an MCU hardware circuit. According to the utility model, the wireless intelligent terminal, the fault arc detector, the intelligent miniature circuit breaker, the electric leakage mutual inductor and the temperature sensor are installed in the incoming line main loop or the outgoing line branch loop to monitor the voltage, the current, the electric leakage and the temperature of the main loop; an external intelligent micro circuit breaker, a fault arc and an intelligent terminal are used for monitoring the electric parameters and the fault arc of the branch circuits, so that the main circuit is monitored, the electric parameters and the fault arc of each branch circuit are also monitored, which circuit goes wrong can be found more easily, and troubleshooting is simple.

Description

Technical Field

[0001] This utility model relates to the field of online monitoring technology, and in particular to an online monitoring device based on network transmission. Background Technology

[0002] Currently, for safety monitoring of electrical distribution boxes in the market, mainstream smart electrical monitoring devices mainly monitor three voltage (A, B, C phases), three current (A, B, C phases), four temperature (A, B, C, N phases), and one leakage current. Some manufacturers have added arc fault detectors or end-of-circuit electrical monitoring modules to suit different application scenarios. However, if simultaneous arc fault detection is required for all circuits in the distribution box, or even end-of-circuit electrical monitoring modules, multiple monitoring instruments need to be placed inside a single distribution box. If some circuit breakers need to be replaced with smart circuit breakers, additional gateways are required, and separate data acquisition devices are needed to collect temperature and humidity data from the distribution box. The biggest problem with this is the increased size and redundant monitoring instruments.

[0003] Chinese patent application CN103488159B discloses a distribution box-type smart home terminal and integrated protection controller, including a main air switch with leakage protection, a power module, voltage and current transformers, a comprehensive fault and power consumption monitoring module, a front panel, an automatic switch, and a main control module. The comprehensive fault and power consumption monitoring module includes an integrated module for rapid detection of power consumption, leakage current, short circuit faults, and arc faults, and is equipped with a magnetic latching relay automatic switch, achieving modular and integrated power consumption monitoring and home power distribution fault control and protection. However, this patent does not implement temperature detection for the device, nor does it transmit the collected data to a cloud platform for remote monitoring.

[0004] Therefore, providing a circuit capable of multi-channel fault detection and data uploading to the cloud is a problem that needs to be solved. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an online monitoring device based on network transmission.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] According to one aspect of this utility model, an online monitoring device based on network transmission is provided, comprising a cloud platform, a wireless intelligent terminal, a fault arc detector, a temperature sensor, an intelligent miniature circuit breaker, a leakage current transformer, a temperature and humidity sensor, a LoRa communication circuit, a two-bus communication circuit, a voltage and current acquisition circuit, a temperature and leakage current acquisition circuit, a 485 acquisition circuit, a 485 acquisition circuit with power supply, a 4G circuit, an Ethernet circuit, and an MCU hardware circuit. The MCU hardware circuit is communicatively connected to the LoRa communication circuit, the two-bus communication circuit, the voltage and current acquisition circuit, the temperature and leakage current acquisition circuit, the 485 acquisition circuit, the 485 acquisition circuit with power supply, the 4G circuit, and the Ethernet circuit. The wireless intelligent terminal is connected to the LoRa communication circuit, the fault arc detector is connected to the two-bus communication circuit, the temperature sensor and the leakage current transformer are connected to the temperature and leakage current acquisition circuit, the intelligent miniature circuit breaker is connected to the 485 acquisition circuit, the temperature and humidity sensor is connected to the 485 acquisition circuit with power supply, and the 4G circuit and the Ethernet circuit are communicatively connected to the cloud platform.

[0008] As a preferred technical solution, the device further includes an incoming main circuit and an outgoing branch circuit. The temperature sensor and leakage current transformer are installed in the incoming main circuit. The voltage and current acquisition circuit is communicatively connected to the incoming main circuit. The wireless intelligent terminal, the fault arc detector, and the intelligent miniature circuit breaker are installed in the outgoing branch circuit.

[0009] As a preferred technical solution, the 485 acquisition circuit includes a 485 communication chip, a capacitive isolation chip, and an isolation optocoupler. The 485 communication chip is connected to the MCU hardware circuit through the isolation optocoupler, and the 485 communication chip is connected to the MCU hardware circuit through the capacitive isolation chip.

[0010] As a preferred technical solution, the powered 485 acquisition circuit includes a 485 communication chip, a transistor, and external terminals. The 485 communication chip is connected to the MCU hardware circuit through the transistor, and the 485 communication chip is connected to the MCU hardware circuit. The external terminals include a 24V power supply terminal, which is connected to the temperature and humidity sensor.

[0011] As a preferred technical solution, the two-bus communication circuit includes a two-bus communication chip, which is communicatively connected to the MCU hardware circuit, and the fault arc detector is communicatively connected to the two-bus communication chip.

[0012] As a preferred technical solution, the Ethernet circuit includes a PHY chip and a network port, wherein the PHY chip is communicatively connected to the network port and the MCU hardware circuit respectively; the 4G circuit includes a 4G module, a power conversion sub-circuit, and a card slot, wherein the 4G module is connected to the power conversion sub-circuit, the MCU hardware circuit, and the card slot respectively.

[0013] As a preferred technical solution, the voltage and current acquisition circuit includes a metering chip, a voltage acquisition sub-circuit, and a current acquisition sub-circuit, wherein the metering chip is communicatively connected to the MCU hardware circuit, the voltage acquisition sub-circuit, and the current acquisition sub-circuit, respectively.

[0014] As a preferred technical solution, the temperature and leakage current acquisition circuit includes a temperature acquisition sub-circuit and a leakage current acquisition sub-circuit. The temperature acquisition sub-circuit is communicatively connected to a temperature sensor and an MCU hardware circuit, respectively, and the leakage current acquisition sub-circuit is communicatively connected to a leakage current transformer and an MCU hardware circuit, respectively.

[0015] As a preferred technical solution, the LoRa communication circuit includes a LoRa communication module and an antenna, wherein the LoRa communication module is communicatively connected to the MCU hardware circuit and the antenna, respectively.

[0016] As a preferred technical solution, the device further includes a water ingress detection circuit, a USB interface circuit, and a NAND flash storage circuit, and the MCU hardware circuit is communicatively connected to the water ingress detection circuit, the USB interface circuit, and the NAND flash storage circuit, respectively.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. This utility model installs a wireless intelligent terminal, a fault arc detector, an intelligent miniature circuit breaker, a leakage current transformer, and a temperature sensor in the incoming main circuit or outgoing branch circuit to monitor the voltage, current, leakage current, and temperature of the main circuit. The external intelligent miniature circuit breaker, fault arc detector, and intelligent terminal monitor the electrical parameters and fault arc of the branch circuit. In this way, the main circuit is monitored, and the electrical parameters and fault arc of each branch circuit are also monitored, making it easier to find out which specific circuit has a problem and simplifying the troubleshooting process.

[0019] 2. This utility model integrates multiple detection circuits without increasing space, gateway costs, or data card costs.

[0020] 3. This utility model features a USB interface circuit, which facilitates remote upgrades. Upgrades can be performed via USB, even without internet access or within a local network.

[0021] 4. This utility model, by setting up a NAND flash storage circuit, facilitates the recording of events when the device performs corresponding operations.

[0022] 5. This utility model detects whether water has entered the device by setting up a water inlet detection circuit. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0024] Figure 2 This is a schematic diagram of the 485 data acquisition circuit connection of this utility model;

[0025] Figure 3 This is a schematic diagram of the power-enabled 485 data acquisition circuit of this utility model;

[0026] Figure 4 This is a schematic diagram of the connection of the two-bus communication circuit of this utility model;

[0027] Figure 5 This is a schematic diagram of the Ethernet circuit connection of this utility model;

[0028] Figure 6 This is a schematic diagram of the 4G circuit connection of this utility model;

[0029] Figure 7 This is a schematic diagram of the voltage and current acquisition circuit of this utility model;

[0030] Figure 8 This is a schematic diagram of the voltage acquisition sub-circuit connection of this utility model;

[0031] Figure 9 This is a schematic diagram of the current acquisition sub-circuit connection of this utility model;

[0032] Figure 10 This is a schematic diagram of the leakage current acquisition sub-circuit connection of this utility model;

[0033] Figure 11 This is a schematic diagram of the temperature acquisition sub-circuit connection of this utility model;

[0034] Figure 12 This is a schematic diagram of the LoRa communication circuit connection of this utility model;

[0035] Figure 13 This is a schematic diagram of the detection circuit connection of this utility model;

[0036] Figure 14 This is a schematic diagram of the NAND flash memory circuit connection of this utility model;

[0037] Figure 15 This is a schematic diagram of the USB interface circuit connection of this utility model. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present utility model.

[0039] Currently, mainstream smart power monitoring devices for safe power consumption monitoring of floor distribution boxes primarily monitor three voltage (A, B, C phases), three current (A, B, C phases), four temperature (A, B, C, N phases), and one leakage current. Some manufacturers have added arc fault detectors or end-of-circuit power monitoring modules to suit different distribution box application scenarios. However, if simultaneous arc fault detection for all circuits in the distribution box is required, or even end-of-circuit power monitoring modules, multiple monitoring instruments need to be placed within a single distribution box. If some circuit breakers need to be replaced with smart circuit breakers, additional gateways are required, and separate data acquisition devices are needed to collect temperature and humidity data from the distribution box. The biggest problem with this is the increased size and redundant monitoring instruments, coupled with the lack of data transmission to a cloud platform for remote monitoring.

[0040] To address the aforementioned problems, this invention provides an online monitoring device based on network transmission. This invention integrates a wireless smart terminal, a fault arc detector, a smart miniature circuit breaker, a leakage current transformer, and a temperature sensor in the incoming main circuit or outgoing branch circuit. It monitors the voltage, current, leakage current, and temperature of the main circuit, while the external smart miniature circuit breaker, fault arc detector, and smart terminal monitor the electrical parameters and fault arc of the branch circuits. This allows for monitoring of both the main circuit and the electrical parameters and fault arc of each branch circuit, making it easier to identify the specific circuit causing the problem and simplifying troubleshooting. This invention integrates multiple detection circuits without increasing space, gateway costs, or data card costs. The invention features a USB interface circuit for convenient remote upgrades, allowing upgrades even without network access or within an intranet. The invention incorporates a NAND flash storage circuit for convenient event recording during device operations. Finally, the invention includes a water ingress detection circuit to detect water ingress into the device.

[0041] Example 1

[0042] like Figure 1As shown, an online monitoring device based on network transmission includes a cloud platform, a wireless smart terminal, a fault arc detector, a temperature sensor, a smart miniature circuit breaker, a leakage current transformer, a temperature and humidity sensor, a LoRa communication circuit, a two-bus communication circuit, a voltage and current acquisition circuit, a temperature and leakage current acquisition circuit, a 485 acquisition circuit, a powered 485 acquisition circuit, a 4G circuit, an Ethernet circuit, and an MCU hardware circuit. The MCU hardware circuit is communicatively connected to the LoRa communication circuit, the two-bus communication circuit, the voltage and current acquisition circuit, the temperature and leakage current acquisition circuit, the 485 acquisition circuit, the powered 485 acquisition circuit, the 4G circuit, and the Ethernet circuit. The wireless smart terminal is connected to the LoRa communication circuit, the fault arc detector is connected to the two-bus communication circuit, the temperature sensor and the leakage current transformer are connected to the temperature and leakage current acquisition circuit, the smart miniature circuit breaker is connected to the 485 acquisition circuit, the temperature and humidity sensor is connected to the powered 485 acquisition circuit, and the 4G circuit and the Ethernet circuit are communicatively connected to the cloud platform.

[0043] The device also includes an incoming main circuit and an outgoing branch circuit. The temperature sensor and leakage current transformer are installed in the incoming main circuit. The voltage and current acquisition circuit is communicatively connected to the incoming main circuit. The wireless intelligent terminal, the fault arc detector, and the intelligent miniature circuit breaker are installed in the outgoing branch circuit.

[0044] In this embodiment, by installing a wireless smart terminal, temperature sensor, fault arc detector, intelligent miniature circuit breaker, and leakage current transformer in the incoming main circuit or outgoing branch circuit, the system monitors the incoming main circuit or outgoing branch circuit, detects the temperature and humidity using a temperature and humidity sensor, and collects data through LoRa communication circuit, two-wire bus communication circuit, voltage and current acquisition circuit, temperature and leakage current acquisition circuit, 485 acquisition circuit, and 485 acquisition circuit with power supply. The collected data is transmitted to the cloud platform via 4G and Ethernet circuits. The MCU hardware circuit includes an MCU chip.

[0045] like Figure 2 As shown, the 485 acquisition circuit includes a 485 communication chip, a capacitive isolation chip, and an isolation optocoupler. The 485 communication chip is communicatively connected to the MCU hardware circuit via the isolation optocoupler, and the 485 communication chip is also communicatively connected to the MCU hardware circuit via the capacitive isolation chip. The control pins of the 485 communication chip are connected to the PD12 port of the MCU chip via the isolation optocoupler, the RO port of the 485 communication chip is connected to the B1 port of the capacitive isolation chip, the DI port of the 485 communication chip is connected to the B2 port of the capacitive isolation chip, then the A1 port of the capacitive isolation chip is connected to the PE1 port of the MCU chip, and the A2 port of the capacitive isolation chip is connected to the PE0 port of the MCU chip.

[0046] like Figure 3As shown, the powered 485 acquisition circuit includes a 485 communication chip, a transistor, and external terminals. The 485 communication chip is connected to the MCU hardware circuit through the transistor. The external terminals include a 24V power supply terminal, which is connected to the temperature and humidity sensor.

[0047] In this embodiment, the control pin of the 485 communication chip is connected to the collector of the transistor. The RO port of the 485 communication chip is connected to the PD9 port of the MCU chip, and the base of the transistor is connected to the PD8 port of the MCU chip. External terminal J1 can be extended and connected to the temperature and humidity sensor via wiring. Since the temperature and humidity sensor is generally placed at the bottom of the distribution box, it needs to be fixed to the bottom of the distribution box via leads. The wiring includes 4 wires and a 24V power supply to power the temperature and humidity sensor.

[0048] like Figure 4 As shown, the two-bus communication circuit includes a two-bus communication chip, which is communicatively connected to the MCU hardware circuit. The fault arc detector is also communicatively connected to the two-bus communication chip. The TXD port of the two-bus communication chip is connected to the PE8 port of the MCU, and the RXD port of the two-bus communication chip is connected to the PE9 port of the MCU for communication. The fault arc detector is connected via a BUS bus, with a maximum of 32 cascaded detectors.

[0049] like Figure 5 , Figure 6 As shown, the Ethernet circuit includes a PHY chip and a network port, and the PHY chip is communicatively connected to the network port and the MCU hardware circuit respectively; the 4G circuit includes a 4G module, a power conversion sub-circuit, and a card slot, and the 4G module is connected to the power conversion sub-circuit, the MCU hardware circuit, and the card slot respectively.

[0050] In this embodiment, the nRESET port, ENET1_TXEN port, ENET1_TX0 port, ENET1_TX1 port, ENET1_RXD0 port, ENET1_RXD1 port, ENET1_CRS_DV port, MDC port, MDIO port, RXIRR port, and CLK port of the PHY chip are sequentially connected to the PB14 port, PB11 port, PB12 port, PB13 port, PC4 port, PC5 port, PA7 port, PC1 port, PA2 port, PB15 port, and PA1 port of the MCU chip for Ethernet communication; the NET1_TXD_P port, NET1_TXD_N port, ENT1_RXD_P port, NET1_SPEED_LED port, and NET1_LINK_LED port of the PHY chip are connected to the network port respectively. The 4G module's 4G_TXD, 4G_RXD, 4G_PKEY, and 4G_AD5V ports are sequentially connected to the MCU chip's PC6, PC7, PB1, and PF4 ports, respectively. Simultaneously, the power conversion sub-circuit converts 5V to 4V via a power chip to power the 4G module. The power chip also supports power-off functionality; its 4G_4VEN port is connected to the MCU chip's PB0 port, allowing for complete power-off and power-on control of the 4G module in case of malfunction, ensuring a smooth restart. The 4G module's USIM_VDD, USIMRST, USIM_CLK, USIM_GND, and USIM_DATA ports are sequentially connected to the card slot's VCC, RST, CLK, GND, and I / O ports, respectively. The Ethernet and 4G circuits communicate directly to the cloud via TCP.

[0051] like Figures 7-9 As shown, the voltage and current acquisition circuit includes a metering chip, a voltage acquisition sub-circuit, and a current acquisition sub-circuit. The metering chip is communicatively connected to the MCU hardware circuit, the voltage acquisition sub-circuit, and the current acquisition sub-circuit, respectively.

[0052] In this embodiment, the outputs of the voltage acquisition sub-circuit are connected to the UAP, UAN, UBP, UBN, UCP, and UCN ports of the metering chip, respectively. The outputs of the current acquisition sub-circuit are connected to the IAP, IAN, IBP, IBN, ICP, and ICN ports of the metering chip, respectively. The SPI_SDI, SPI_SDO, SPI_SCK, SPI_CS, and RSTN_MCU ports of the metering chip are sequentially connected to the PB5, PB4, PA5, PA4, and PE3 ports of the MCU chip. The voltage and current acquired by the metering chip are read through the SPI port of the MCU chip.

[0053] like Figure 10 , Figure 11As shown, the temperature and leakage current acquisition circuit includes a temperature acquisition sub-circuit and a leakage current acquisition sub-circuit. The temperature acquisition sub-circuit is communicatively connected to the temperature sensor and the MCU hardware circuit, respectively, and the leakage current acquisition sub-circuit is communicatively connected to the leakage current transformer and the MCU hardware circuit, respectively.

[0054] In this embodiment, the temperature acquisition subcircuit includes four temperature acquisition channels. The AI1 port of the leakage current acquisition subcircuit is connected to the VREF port and the leakage current transformer. The ADC_X1 port of the leakage current acquisition subcircuit is connected to the PF10 port of the MCU chip to acquire leakage current values. The AT_1, AT_2, AT_3, and AT_4 ports of the temperature acquisition subcircuit are respectively connected to one end of four NTC temperature sensors. The VREFOUT2 port is connected to the other end of temperature sensors 1 and 2, and the VREFOUT3 port is connected to the other end of temperature sensors 3 and 4. The ADC_AT1, ADC_AT2, ADC_AT3, and ADC_AT4 ports of the temperature acquisition subcircuit are sequentially connected to the PF7, PF6, PF5, and PF3 ports of the MCU chip to acquire the values ​​of the four temperature sensors.

[0055] like Figure 12 As shown, the LoRa communication circuit includes a LoRa communication module and an antenna. The LoRa communication module is communicatively connected to both the MCU hardware circuit and the antenna. The LoRa_DIO0, LoRa_RST, LoRa_ss, LoRa_MOSI, LoRa_MISO, and LoRa_CLK ports of the LoRa communication module are sequentially connected to the PE9, PE10, PE11, PE14, PE13, and PE12 ports of the MCU chip. The antenna is connected to the LoRa_ANT port of the LoRa communication module.

[0056] like Figures 13-15 As shown, the device also includes a water ingress detection circuit, a USB interface circuit, and a NAND flash storage circuit. The MCU hardware circuit is communicatively connected to the water ingress detection circuit, the USB interface circuit, and the NAND flash storage circuit, respectively.

[0057] In this embodiment, the water ingress detection circuit includes an isolation optocoupler. One end of the switch signal is connected to the input pin of the isolation optocoupler through the DI_IN1l port, and the other end is connected to the DI_COM port, which is connected to 15V. When the switch signal is turned on, the 15V power supply is supplied to the input side of the isolation optocoupler, ensuring that the input side of the isolation optocoupler is turned on. This causes the PB8 port connected to the MCU chip to be pulled low from 3.3V to 0V, thereby detecting the switch input of the water immersion sensor and thus detecting water ingress and triggering an alarm. The NAND flash memory circuit consists of a 128M NAND flash memory, which is low in cost and has a large storage capacity. The NAND flash memory is connected to the hardware SPI of the MCU chip through the SPI port, including the SPIFLASH_CS port, SPI_SCK port, SPI_MOSI port, SPI_WP port, SPI_HOLD port, and SPI_MISO port, which are connected to the PG8, PG13, PG14, PG10, PG11, and PG12 ports of the MCU chip in sequence, as well as two general-purpose pins. The USB interface circuit consists of an ESD protection device and a USB female connector. The ESD protection device is connected in parallel to the HSUSB_D_N, HSUSB_D_P, and HSUSB_VBUS ports to prevent electrostatic damage to the chip. The two data lines of the USB HSUSB_D_N and HSUSB_D_P ports are directly connected to the USB controller on the PA11 and PA12 ports of the MCU chip. The USB master / slave control pin, HSUSB_VBUS, is connected to the PA9 port of the MCU chip. This PA9 port controls the USB interface to function as a master or slave device. When used as a slave, it allows for local upgrades via a connected USB flash drive, offering high speed and good versatility. When used as a master, it enables Modbus communication with an external touchscreen via a virtual serial port.

[0058] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An online monitoring device based on network transmission, characterized in that, The system includes a cloud platform, a wireless intelligent terminal, a fault arc detector, a temperature sensor, an intelligent miniature circuit breaker, a leakage current transformer, a temperature and humidity sensor, a LoRa communication circuit, a two-wire bus communication circuit, a voltage and current acquisition circuit, a temperature and leakage current acquisition circuit, a 485 acquisition circuit, a powered 485 acquisition circuit, a 4G circuit, an Ethernet circuit, and an MCU hardware circuit. The MCU hardware circuit is communicatively connected to the LoRa communication circuit, the two-wire bus communication circuit, the voltage and current acquisition circuit, the temperature and leakage current acquisition circuit, the 485 acquisition circuit, the powered 485 acquisition circuit, the 4G circuit, and the Ethernet circuit. The wireless intelligent terminal is connected to the LoRa communication circuit. The fault arc detector is connected to the two-wire bus communication circuit. The temperature sensor and the leakage current transformer are connected to the temperature and leakage current acquisition circuit, respectively. The intelligent miniature circuit breaker is connected to the 485 acquisition circuit. The temperature and humidity sensor is connected to the powered 485 acquisition circuit. The 4G circuit and the Ethernet circuit are communicatively connected to the cloud platform.

2. The online monitoring device based on network transmission according to claim 1, characterized in that, The device also includes an incoming main circuit and an outgoing branch circuit. The temperature sensor and leakage current transformer are installed in the incoming main circuit. The voltage and current acquisition circuit is communicatively connected to the incoming main circuit. The wireless intelligent terminal, the fault arc detector, and the intelligent miniature circuit breaker are installed in the outgoing branch circuit.

3. The online monitoring device based on network transmission according to claim 1, characterized in that, The 485 acquisition circuit includes a 485 communication chip, a capacitive isolation chip, and an isolation optocoupler. The 485 communication chip is connected to the MCU hardware circuit through the isolation optocoupler, and the 485 communication chip is connected to the MCU hardware circuit through the capacitive isolation chip.

4. The online monitoring device based on network transmission according to claim 1, characterized in that, The powered 485 data acquisition circuit includes a 485 communication chip, a transistor, and external terminals. The 485 communication chip is connected to the MCU hardware circuit via the transistor. The external terminals include a 24V power supply terminal, which is connected to the temperature and humidity sensor.

5. The online monitoring device based on network transmission according to claim 1, characterized in that, The dual-bus communication circuit includes a dual-bus communication chip, which is communicatively connected to the MCU hardware circuit, and the fault arc detector is communicatively connected to the dual-bus communication chip.

6. The online monitoring device based on network transmission according to claim 1, characterized in that, The Ethernet circuit includes a PHY chip and a network port, and the PHY chip is communicatively connected to the network port and the MCU hardware circuit respectively; the 4G circuit includes a 4G module, a power conversion sub-circuit, and a card slot, and the 4G module is connected to the power conversion sub-circuit, the MCU hardware circuit, and the card slot respectively.

7. The online monitoring device based on network transmission according to claim 1, characterized in that, The voltage and current acquisition circuit includes a metering chip, a voltage acquisition sub-circuit, and a current acquisition sub-circuit. The metering chip is communicatively connected to the MCU hardware circuit, the voltage acquisition sub-circuit, and the current acquisition sub-circuit, respectively.

8. The online monitoring device based on network transmission according to claim 1, characterized in that, The temperature and leakage current acquisition circuit includes a temperature acquisition sub-circuit and a leakage current acquisition sub-circuit. The temperature acquisition sub-circuit is communicatively connected to a temperature sensor and an MCU hardware circuit, respectively. The leakage current acquisition sub-circuit is communicatively connected to a leakage current transformer and an MCU hardware circuit, respectively.

9. The online monitoring device based on network transmission according to claim 1, characterized in that, The LoRa communication circuit includes a LoRa communication module and an antenna, and the LoRa communication module is communicatively connected to the MCU hardware circuit and the antenna, respectively.

10. The online monitoring device based on network transmission according to claim 1, characterized in that, The device also includes a water ingress detection circuit, a USB interface circuit, and a NAND flash storage circuit, and the MCU hardware circuit is communicatively connected to the water ingress detection circuit, the USB interface circuit, and the NAND flash storage circuit, respectively.

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