A smart measurement switch based on dual-mode communication

Abstract

This invention discloses an intelligent measuring switch based on dual-mode communication, belonging to the field of low-voltage switch technology. The invention includes a base assembly, an outer cover, and electronic components. The uplink communication unit of the electronic components includes an HPLC communication section, an HRF communication section, and an extended communication section. The extended communication section constructs a bypass high-speed carrier signal channel between the input and output terminals through a broadband carrier signal coupler, ensuring that the HPLC signal remains continuous even after the switch is opened. The electronic components also include an output status detection unit for detecting the AC voltage status of the output terminals. The controller unit combines the electrical signal from the output status detection unit with the mechanical signal from the switch position detection device to perform a dual judgment on the open / closed status. This invention significantly improves the success rate of power outage reporting and the reliability of switch status detection.

Description

Technical Field

[0001] This application relates to the field of low-voltage switch technology, specifically to an intelligent measurement switch based on dual-mode communication. Background Technology

[0002] Intelligent metering switches are low-voltage switches developed in recent years to support smart grid upgrades. Compared to traditional metering switches, intelligent metering switches offer energy metering, remote communication and control, and IoT expansion capabilities, making them the preferred switchgear in power distribution networks. Remote communication with intelligent metering switches involves transmitting information to a concentrator via HPLC (High-Speed ​​Power Line Carrier) or HPLC+HRF (High-Speed ​​Power Line Carrier + High-Speed ​​Low-Power Wireless), from which the information is then remotely transmitted to the main station. In practical applications, HRF communication is significantly affected by building obstructions, limiting transmission distance in densely built-up areas; while HPLC communication relies on power lines, and signal attenuation or even failure occurs when the line is disconnected.

[0003] When a smart metering switch trips due to a backend fault, it causes a line interruption. The power grid company requires all electricity meters to report power outages promptly, but the success rate of such reporting is extremely low. Furthermore, the switch's position detection device consists of a rotatable component and a microswitch. The movement of the switch's moving contact drives the rotatable component, which in turn contacts the microswitch to determine whether the smart metering switch is closed or open. However, this structure has a risk of jamming after a period of use, leading to inaccurate determination of the smart metering switch's actual open / closed state. Utility Model Content

[0004] The purpose of this invention is to provide an intelligent measurement switch based on dual-mode communication to solve the problems in the prior art where the HPLC communication is interrupted after the intelligent measurement switch is opened, making it difficult to report the power outage information of the back-end equipment, and the mechanical gate position detection has the risk of jamming, resulting in unreliable status judgment.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an intelligent measurement switch based on dual-mode communication, comprising a base assembly, an outer cover, and electronic components;

[0006] The base assembly includes an inlet terminal and an outlet terminal;

[0007] The outer cover includes a plastic shell and a gate position detection device mounted on the plastic shell; the gate position detection device consists of a micro switch, a plastic rotary rod and a spring component, and the plastic rotary rod is mechanically linked with the contact shaft to output a mechanical position signal.

[0008] The electronic component includes a controller unit and an uplink communication unit, wherein the controller unit is electrically connected to the uplink communication unit;

[0009] The uplink communication unit includes an HPLC communication section, an HRF communication section, and an extended communication section;

[0010] The extended communication section includes a broadband carrier signal coupler T1, which includes a primary side, a first secondary winding, and a second secondary winding. The primary side is electrically connected to the incoming terminal, the first secondary winding is the local signal channel of the intelligent measurement switch, and the second secondary winding is electrically connected to the outgoing terminal. This is used to construct an independent high-speed carrier signal channel between the incoming terminal and the outgoing terminal, so that when the intelligent measurement switch trips due to a fault, causing the main circuit to be disconnected, the high-speed carrier signal channel remains connected.

[0011] The electronic component also includes an output status detection unit, which includes a detection circuit electrically connected to the output terminal for detecting the AC voltage status of the output terminal.

[0012] The controller unit is electrically connected to the gate position detection device and the output status detection unit, respectively, and is used to receive the mechanical position signal from the gate position detection device and the electrical voltage signal from the output status detection unit, and to perform a dual redundant judgment on the opening and closing status of the intelligent measuring switch based on mechanical position and electrical voltage.

[0013] Furthermore, the extended communication section also includes a first safety capacitor bank, a second safety capacitor bank, a first protection diode D1, and a second protection diode D2;

[0014] The Pin5 pin of the broadband carrier signal coupler T1 is electrically connected to the neutral line N and one end of the first protection diode D1, and the Pin6 pin is electrically connected to the other end of the first protection diode D1 and one end of the first safety capacitor group. The other end of the first safety capacitor group is electrically connected to the A-phase, B-phase, and C-phase input terminals of the intelligent measurement switch through the input voltage detection terminal, respectively.

[0015] The Pin3 pin of the broadband carrier signal coupler T1 is electrically connected to the neutral line N and one end of the second protection diode D2. The Pin4 pin is electrically connected to the other end of the second protection diode D2 and one end of the second safety capacitor group. The other end of the second safety capacitor group is electrically connected to the A-phase, B-phase, and C-phase output terminals of the intelligent measurement switch through the output status detection terminal.

[0016] The Pin1 and Pin2 pins of the broadband carrier signal coupler T1 are connected to the HPLC communication circuit of the switch itself.

[0017] Furthermore, the detection circuit of the output state detection unit includes a first current-limiting resistor R1, a second current-limiting resistor R2, a pull-up resistor R3, a filter capacitor C7, and a bidirectional optocoupler U1;

[0018] One end of the first current-limiting resistor R1 is electrically connected to the output terminal through the output status detection terminal, and the other end is electrically connected to the Pin1 pin of the bidirectional optocoupler U1; one end of the second current-limiting resistor R2 is electrically connected to the neutral line N, and the other end is electrically connected to the Pin2 pin of the bidirectional optocoupler U1; one end of the pull-up resistor R3 is electrically connected to the DC power supply, and the other end is electrically connected to the Pin4 pin of the bidirectional optocoupler U1, one end of the filter capacitor C7, and the IO port of the controller unit; the Pin3 pin of the bidirectional optocoupler U1 is electrically connected to the other end of the filter capacitor C7 and the power supply ground.

[0019] Furthermore, the base assembly also includes a base and an arc-extinguishing grid, contacts and accessories, a circuit breaker opening and closing device, a current transformer, a tripping device, an incoming line voltage detection terminal, and an output status detection terminal, all fixedly mounted on the base. The contacts and accessories are mechanically linked to the circuit breaker opening and closing device, and the circuit breaker opening and closing device is mechanically linked to the tripping device. The arc-extinguishing grid is located near the contacts and accessories to extinguish the electric arc. The current transformer includes a set of metering current transformers and a set of overcurrent protection current transformers, and the current transformers are electrically connected to the metering unit of the electronic component.

[0020] Furthermore, the base assembly also includes a terminal temperature sensor, which is installed below the incoming and outgoing terminals and electrically connected to the controller unit of the electronic component via a wire, for detecting the terminal temperature.

[0021] Furthermore, the electronic component also includes an IoT communication unit, which includes a Bluetooth communication module, an RS485 communication module, and a CAN communication module, and the IoT communication unit is electrically connected to the controller unit.

[0022] Furthermore, the electronic component also includes a power output unit, which is a DC / DC power supply circuit. Its input terminal is electrically connected to the output terminal of the power conversion unit, and it is used to output a 12V / 250mA DC power supply to power external intelligent devices.

[0023] Furthermore, the electronic component also includes a security unit and a storage unit. The security unit includes a security chip, and the storage unit includes a storage chip. The security unit and the storage unit are electrically connected to the controller unit, respectively.

[0024] Furthermore, the outer cover also includes a manual trip button and a clock battery; the manual trip button is a plastic rod with a built-in spring, and its bottom is mechanically linked to the opening and closing device; the clock battery is electrically connected to the controller unit of the electronic components and is used to power the real-time clock.

[0025] Furthermore, the electronic component also includes a metering unit, a power conversion unit, an indicator light unit, and an external interface unit; the metering unit is electrically connected to a current transformer and an input voltage detection terminal for metering power information; the input terminal of the power conversion unit is electrically connected to the input voltage detection terminal for providing the power required for operation to each functional unit of the electronic component; the indicator light unit is electrically connected to the controller unit for displaying switch status information.

[0026] The beneficial effects of the above-mentioned technical solution of this utility model are as follows:

[0027] This invention adds an extended communication section to the uplink communication unit, specifically utilizing a broadband carrier signal coupler to construct a bypass high-speed carrier signal channel independent of the main contacts between the input and output terminals. When the intelligent measurement switch trips due to a fault, physically disconnecting the main contacts and causing an interruption in the conventional HPLC circuit, this bypass channel can still maintain high-frequency signal continuity between the input and output sides. This allows power outage event information from devices such as energy meters located downstream of the switch to be transmitted to the main station via the output terminal, the bypass coupler, the input terminal, and finally through the normal HPLC network on the input side, improving the success rate of power outage reporting. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the base assembly provided by this utility model.

[0029] Figure 2 This is a schematic diagram of the structure of the outer cover provided by this utility model.

[0030] Figure 3 This is a schematic diagram of the functional units of the electronic component provided by this utility model.

[0031] Figure 4 This is a circuit diagram of the extended communication section in the uplink communication unit provided by this utility model.

[0032] Figure 5 This is a schematic diagram of the A-phase detection circuit in the output status detection unit provided by this utility model.

[0033] Markings and corresponding component names in the diagram:

[0034] 100-Base; 101-Incoming terminal; 102-Outgoing terminal; 103-Terminal temperature sensor; 104-Arc extinguishing grid; 105-Contacts and accessories; 106-Closing and tripping device; 107-Current transformer; 108-Trip device; 109-Incoming voltage detection terminal; 110-Output status detection terminal; 200-Plastic housing; 201-Manual tripping button; 202-Stop position detection device; 203-Clock battery; 300-Controller unit; 301-Metering unit; 302-Power conversion unit; 303-Safety unit; 304-Storage unit; 305-Indicator light unit; 306-Power output unit; 307-IoT communication unit; 308-Uplink communication unit; 309-Output status detection unit; 310-External interface unit. Detailed Implementation

[0035] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0036] Please see Figures 1 to 5 This embodiment provides an intelligent measurement switch based on dual-mode communication. This switch is suitable for incoming lines, branch boxes, meter boxes, or user terminals in low-voltage distribution networks, serving as an intelligent device integrating metering, protection, control, and communication.

[0037] The intelligent measurement switch mainly consists of three components: the base assembly (such as...) Figure 1 As shown), outer cover (such as) Figure 2 (as shown) and embedded electronic components (such as) protected by the base and outer cover. Figure 3 (As shown).

[0038] 1. A base assembly, including a base 100 and, mounted on the base, an incoming terminal 101, an outgoing terminal 102, a terminal temperature sensor 103, an arc-extinguishing grid 104, contacts and accessories 105, a switching device 106, a current transformer 107, a tripping device 108, an incoming voltage detection terminal 109, and an output status detection terminal 110, wherein:

[0039] The incoming terminal 101 and the outgoing terminal 102 are used to connect the three-phase power supply incoming and outgoing lines, respectively. The incoming terminal 101 is the incoming terminal for the three-phase AC power supply, and the outgoing terminal 102 is the outgoing terminal for the AC power supply. The incoming terminal 101 and the outgoing terminal 102 are metal structural components with fixing screws.

[0040] Terminal temperature sensor 103 is installed below the incoming terminal 101 and the outgoing terminal 102, and is connected to the electronic components via wires to detect the temperature of the incoming and outgoing terminals.

[0041] Arc extinguishing grid 104: Composed of metal sheets stacked at a certain interval, the metal sheets are supported by insulating material to extinguish the electric arc generated when the contact is connected or separated from the incoming terminal.

[0042] Contact and accessories 105: Composed of metal contacts, rotating shaft, bracket and soft copper wire, it is the core component for controlling the opening and closing of the circuit.

[0043] The circuit breaker 106 consists of an operating handle, a traction rod, and a linkage mechanism. The circuit breaker 106 is linked to the contacts. Changing the position of the operating handle can control the connection and separation of the contacts and the incoming terminal 101, that is, control the connection and disconnection of the line.

[0044] Current transformer 107: This is a current sensor installed near the outgoing terminal. A soft copper wire connecting the contact points passes through the current transformer. The current transformer transmits the sensed current signal to electronic components via wires to detect the current in phases A, B, and C of the line. Two sets of current transformers are installed: one for metering and one for overcurrent protection.

[0045] Tripping device 108: Composed of coil, spring, metal frame and plastic parts, it is connected to electronic components through wires and can be linked with circuit breaker 106 to execute the tripping command of electronic components to achieve rapid circuit breaker tripping; it can also be mechanically tripped by manual tripping button 201 on the outer cover.

[0046] Input voltage detection terminal 109: It is a circular hollow metal connector installed below the input terminal 101 and connected to the input terminal 101 with screws. After the wire is crimped on the connector, it is connected to the electronic components to provide the electronic components with three-phase input voltage signals and power input, and at the same time provide a high-speed carrier signal channel.

[0047] Output status detection terminal 110: It is a circular hollow metal connector, installed below the output terminal 102, and connected to the output terminal 102 with screws. After the wire is crimped on the connector, it is connected to the electronic component to provide the electronic component with the output voltage status signal and the high-speed carrier signal channel.

[0048] 2. Outer cover, including plastic housing 200, manual trip button 201, gate position detection device 202 and clock battery 203;

[0049] Manual trip button 201: It is a plastic rod with a built-in spring. When pressed, the force at its bottom is directly transmitted to the opening and closing device 106 to achieve manual tripping.

[0050] The gate position detection device 202 consists of a micro switch, a plastic rotary rod, and a spring. The micro switch is a single-pole double-throw switch, fixed inside the outer cover and located directly above the rotating shaft of the contact and accessory 105. It is used to detect whether the intelligent measuring switch is in an open or closed state. Its working principle is as follows: When the switch is closed, the rotating shaft of the contact and accessory 105 separates from the plastic rotary rod. Under the action of the spring, the plastic rotary rod presses against the micro switch, connecting the internal circuit of the micro switch and outputting a "closed" signal. When the switch is open, the rotating shaft of the contact and accessory 105 contacts the plastic rotary rod, causing the plastic rotary rod to release the micro switch, disconnecting the internal circuit of the micro switch and outputting a "open" signal. The "closed" and "open" signals are sent to the electronic components via wires.

[0051] Clock battery 203: Fixed inside the outer cover, connected to the electronic components via wires, to provide external power to the controller unit 300 of the electronic components to ensure stable and continuous operation of the real-time clock.

[0052] 3. Electronic components are a combination of functional units used to realize the intelligent measurement switch, including a controller unit 300, a metering unit 301, a power conversion unit 302, a safety unit 303, a storage unit 304, an indicator light unit 305, a power output unit 306, an IoT communication unit 307, an uplink communication unit 308, an output status detection unit 309, and an external interface unit 310. The electronic components are protected by a housing and embedded inside the switch, working together with the base assembly and components on the outer cover to realize the relevant functions of the intelligent measurement switch.

[0053] The controller unit 300 is responsible for the management and control of the intelligent measurement switch. It is based on a high-performance microcontroller and is supplemented by peripheral circuits such as crystal oscillator circuit, reset circuit and debugging interface, and is connected to each functional unit.

[0054] The metering unit 301 consists of a metering chip and its peripheral components, and is used to measure electrical information such as voltage, current and power passing through the switch.

[0055] The power conversion unit 302 is an AC input, DC output power module that provides the power required for the operation of various functional units of the electronic components. The input terminal of the power conversion unit is connected to the input voltage detection terminal, and the output terminal is connected to each functional unit.

[0056] The security unit 303 consists of a security chip and peripheral components, and its function is to ensure the secure transmission of important data, control commands and other information.

[0057] The storage unit 304 consists of a storage chip and its peripheral components, and is used to store relevant data during the operation of the switch.

[0058] The indicator unit 305 consists of light-emitting diodes and resistors, and is used to display switch-related status information.

[0059] The power output unit 306 consists of a DC / DC power chip and peripheral components, and outputs a 12V / 250mA DC power supply to provide power to external smart devices.

[0060] The IoT communication unit 307 consists of a Bluetooth communication module, an RS485 communication module, and a CAN communication module. Its function is to enable local debugging and IoT expansion with external command devices.

[0061] The uplink communication unit 308 consists of an HPLC communication section, an HRF communication section, and an extended communication section, used for communication with the smart terminal or energy meter in the distribution area. The HPLC and HRF communication sections are conventional design schemes. The extended communication section consists of a broadband carrier signal coupler T1, a first safety capacitor group (including C1, C3, and C5), a second safety capacitor group (including C2, C4, and C6), a first protection diode D1, and a second protection diode D2. One end of the extended communication section is connected to the input terminal, and the other end is connected to the output terminal to provide a high-speed carrier signal channel. The broadband carrier signal coupler T1 includes a primary winding, a first secondary winding, and a second secondary winding with a turns ratio of 1:1:1. Each winding has an inductance of 200uH and a withstand voltage of 5.0kV. The primary winding serves as the signal channel towards the switch's input terminal. The first secondary winding serves as the local signal channel for the intelligent measurement switch. The second secondary winding is electrically connected to the output terminal 102, used to construct an independent carrier signal channel between the input terminal 101 and the output terminal 102. Detailed circuit diagram is shown below. Figure 4 .

[0062] like Figure 4 As shown, pins 5 and 8 of the broadband carrier signal coupler T1, together with pins 1 and 2, form one high-speed carrier signal channel for the HPLC communication of the switch itself; pins 5 and 8 of the signal coupling transformer T1, together with pins 3 and 4, form another high-speed carrier signal channel for extended communication, serving as a high-speed carrier signal channel from the output end to the input end when the internal circuit of the switch is disconnected.

[0063] Pin 5 of T1 is connected to the neutral line N of the power grid and one end of the first protection diode D1. Pin 8 of T1 is connected to the other end of the first protection diode D1 and one end of safety capacitors C1, C3, and C5. The other ends of safety capacitors C1, C3, and C5 are connected to the input terminals of the intelligent measurement switch A, B, and C phases (A1, B1, and C1 in the figure) through the input voltage detection terminals, respectively.

[0064] Pin 1 and Pin 2 of T1 are connected to the HPLC communication circuit of the switch itself.

[0065] Pin 3 of T1 is connected to the neutral line N of the power grid and one end of the second protection diode D2. Pin 4 of T1 is connected to the other end of the second protection diode D2 and one end of safety capacitors C2, C4, and C6. The other ends of safety capacitors C2, C4, and C6 are connected to the output terminals of the intelligent measurement switch A, B, and C phases (VO-A, VO-B, VO-C in the figure) through the output status detection terminals.

[0066] Output status detection unit 309 includes three identical detection circuits that detect the voltage status of phases A, B, and C at the output terminals, respectively. Taking phase A as an example, the phase A output status detection circuit consists of a first current-limiting resistor R1, a second current-limiting resistor R2, a pull-up resistor R3, a filter capacitor C7, and a bidirectional optocoupler U1. The bidirectional optocoupler U1 uses an OPRC-814SA. When there is AC voltage at the output terminals, the LED inside the bidirectional optocoupler U1 conducts, and pin 4 of the bidirectional optocoupler U1 outputs a low level. When there is no AC voltage at the output terminals, the LED inside the bidirectional optocoupler U1 is cut off, and pin 4 of the bidirectional optocoupler U1 outputs a high level. This determines whether there is AC voltage at the output terminals, and thus whether the switch is closed or open.

[0067] like Figure 5 As shown, one end of the first current-limiting resistor R1 is connected to the A-phase output terminal of the intelligent measurement switch via the output status detection terminal, and the other end is connected to Pin1 of the bidirectional optocoupler U1. One end of the second current-limiting resistor R2 is connected to the center line N of the power grid, and the other end is connected to Pin2 of the bidirectional optocoupler U1. One end of the pull-up resistor R3 is connected to the 3.3V DC power supply, and the other end is connected to Pin4 of the bidirectional optocoupler U1 and one end of the filter capacitor C7. Pin3 of the bidirectional optocoupler U1 is connected to the other end of the filter capacitor C7 and the common terminal of the 3.3V DC power supply.

[0068] External interface unit 310: is an 8-pin or more port latched connector that leads out signals including 12V power output, RS485 communication, CAN communication, etc., for easy and quick connection with external devices.

[0069] The overall workflow of this utility model:

[0070] During normal operation, the incoming terminal 101 is connected to a three-phase power supply. When the switch is closed, current flows to the load through the contacts and accessories 105. The metering unit 301 collects current and voltage data in real time. The uplink communication unit 308 maintains heartbeat communication with the concentrator via HPLC or HRF. When the output status detection unit 309 detects voltage, the gate position detection device 202 indicates that the switch is closed, and the controller unit 300 comprehensively determines that the switch is in the closed state.

[0071] When an overcurrent trip occurs, the controller unit 300 detects that the current value reported by the metering unit 301 or the protective current transformer 107 exceeds the protection threshold. The controller unit 300 issues a trip command to the tripping device 108, which activates, pushing the opening and closing device 106 to disconnect the contacts and accessories 105. At this time, the outgoing terminal 102 is de-energized. The output status detection unit 309 immediately detects the disappearance of voltage. Even if the mechanical gate position detection device 202 briefly outputs a closing signal due to inertia or jamming, the controller unit 300 quickly determines that the circuit is open based on the electrical signal. The controller unit 300 generates an "overcurrent trip" event, along with the current value at the time of tripping. This event message is reported to the concentrator and master station via the HPLC or HRF wireless channel of the uplink communication unit 308.

[0072] A power outage is reported when the load side (such as the electricity meter) experiences a power outage due to a switch tripping. Upon detecting the outage, the electricity meter sends a "power outage event" signal via its HPLC module. This signal is input from the outgoing terminal 102, passes through the output status detection terminal 110, safety capacitors C2 / C4 / C6, and is coupled to the primary side via the second secondary winding of T1. It then travels through the incoming safety capacitors C1 / C3 / C5 and the incoming voltage detection terminal 109, finally reaching the incoming terminal 101 and the incoming power network. Upon receiving this outage signal, the concentrator located on the transformer substation side can pinpoint the specific switch and electricity meter. The entire process requires no additional communication modules and is achieved entirely using the built-in extended communication channel of this invention.

[0073] In summary, the intelligent measurement switch based on dual-mode communication provided by this utility model fundamentally solves the two major pain points of communication interruption after circuit breaker tripping and unreliable status detection in the prior art through its ingenious extended communication circuit design and intelligent dual judgment logic of signal and status.

[0074] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A smart measurement switch based on dual-mode communication, characterized in that, Includes base assembly, outer cover, and electronic components; The base assembly includes an incoming terminal (101), an outgoing terminal (102), and a switching device (106). The outer cover includes a plastic housing (200) and a gate position detection device (202) installed on the plastic housing (200); The electronic components include a controller unit (300) and an uplink communication unit (308), the controller unit (300) being electrically connected to the uplink communication unit (308); the uplink communication unit (308) includes an HPLC communication section, an HRF communication section, and an extended communication section; The extended communication section includes a broadband carrier signal coupler T1, which includes a primary side, a first secondary winding, and a second secondary winding. The primary side is electrically connected to the input terminal (101), the first secondary winding is the local signal channel of the intelligent measurement switch, and the second secondary winding is electrically connected to the output terminal (102) to construct an independent carrier signal channel between the input terminal (101) and the output terminal (102). The electronic component also includes an output status detection unit (309), which includes a detection circuit electrically connected to the output terminal (102); The controller unit (300) is electrically connected to the gate position detection device (202) and the output status detection unit (309), respectively.

2. The intelligent measurement switch based on dual-mode communication according to claim 1, characterized in that, The extended communication section also includes a first safety capacitor group, a second safety capacitor group, a first protection diode D1, and a second protection diode D2; The Pin5 pin of the broadband carrier signal coupler T1 is electrically connected to the neutral line N and one end of the first protection diode D1, and the Pin6 pin is electrically connected to the other end of the first protection diode D1 and one end of the first safety capacitor group. The other end of the first safety capacitor group is electrically connected to the A-phase, B-phase, and C-phase input terminals (101) of the intelligent measurement switch through the input voltage detection terminal (109). The Pin3 pin of the broadband carrier signal coupler T1 is electrically connected to the neutral line N and one end of the second protection diode D2. The Pin4 pin is electrically connected to the other end of the second protection diode D2 and one end of the second safety capacitor group. The other end of the second safety capacitor group is electrically connected to the A-phase, B-phase, and C-phase output terminals (102) of the intelligent measurement switch through the output status detection terminal (110). The Pin1 and Pin2 pins of the broadband carrier signal coupler T1 are connected to the HPLC communication circuit of the switch itself.

3. The intelligent measurement switch based on dual-mode communication according to claim 1, characterized in that, The detection circuit of the output status detection unit (309) includes a first current-limiting resistor R1, a second current-limiting resistor R2, a pull-up resistor R3, a filter capacitor C7, and a bidirectional optocoupler U1. One end of the first current-limiting resistor R1 is electrically connected to the output terminal (102) through the output status detection terminal (110), and the other end is electrically connected to the Pin1 pin of the bidirectional optocoupler U1; one end of the second current-limiting resistor R2 is electrically connected to the neutral line N, and the other end is electrically connected to the Pin2 pin of the bidirectional optocoupler U1; one end of the pull-up resistor R3 is electrically connected to the DC power supply, and the other end is electrically connected to the Pin4 pin of the bidirectional optocoupler U1, one end of the filter capacitor C7, and the IO port of the controller unit (300); the Pin3 pin of the bidirectional optocoupler U1 is electrically connected to the other end of the filter capacitor C7 and the power supply ground.

4. The intelligent measurement switch based on dual-mode communication according to claim 1, characterized in that, The base assembly also includes a base (100) and an arc-extinguishing grid (104), contacts and accessories (105), a current transformer (107), a tripping device (108), an incoming line voltage detection terminal (109), and an output status detection terminal (110) fixedly installed on the base (100); wherein, the contacts and accessories (105) are mechanically linked with the circuit breaker (106), the circuit breaker (106) is mechanically linked with the tripping device (108), and the arc-extinguishing grid (104) is located near the contacts and accessories (105) for extinguishing the arc; the current transformer (107) includes a set of metering current transformers and a set of overcurrent protection current transformers, and the current transformer (107) is electrically connected to the metering unit (301) of the electronic assembly.

5. The intelligent measurement switch based on dual-mode communication according to claim 4, characterized in that, The base assembly also includes a terminal temperature sensor (103), which is installed below the incoming terminal (101) and the outgoing terminal (102) and is electrically connected to the controller unit (300) of the electronic assembly via a wire.

6. The intelligent measurement switch based on dual-mode communication according to claim 1, characterized in that, The electronic components also include an IoT communication unit (307), which includes a Bluetooth communication module, an RS485 communication module and a CAN communication module, and is electrically connected to the controller unit (300).

7. The intelligent measurement switch based on dual-mode communication according to claim 1, characterized in that, The electronic components also include a power output unit (306), which is a DC / DC power supply circuit, and its input terminal is electrically connected to the output terminal of the power conversion unit (302).

8. The intelligent measurement switch based on dual-mode communication according to claim 1, characterized in that, The electronic components also include a security unit (303) and a storage unit (304), which are electrically connected to the controller unit (300).

9. The intelligent measurement switch based on dual-mode communication according to claim 1, characterized in that, The gate position detection device (202) consists of a micro switch, a plastic rotary rod, and a spring. The plastic rotary rod is mechanically linked to the contact shaft and is used to output a mechanical position signal. The outer cover also includes a manual trip button (201) and a clock battery (203). The manual trip button (201) is a plastic rod with a built-in spring, and its bottom is mechanically linked to the gate opening and closing device (106). The clock battery (203) is electrically connected to the controller unit (300) of the electronic components.

10. The intelligent measurement switch based on dual-mode communication according to claim 1, characterized in that, The electronic components also include a metering unit (301), a power conversion unit (302), an indicator unit (305), and an external interface unit (310); the metering unit (301) is electrically connected to the current transformer (107) and the input voltage detection terminal (109); the input terminal of the power conversion unit (302) is electrically connected to the input voltage detection terminal (109); the indicator unit (305) is electrically connected to the controller unit (300).

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