Remote reclosing control device with energy metering remote transmission for miniature circuit breaker

Abstract

The utility model discloses a remote reclosing control device of miniature circuit breaker with energy metering remote transmission, including casing, display screen, motor, output shaft, motor drive gear, variable speed gear group, output drive gear and circuit board, casing is fixed through bolt connection on the lateral wall of the shell of miniature circuit breaker, and the outer end portion of output shaft passes through the lateral wall of casing and miniature circuit breaker, and after, with the rotating shaft fixed connection of the opening and closing mechanism in the chamber of miniature circuit breaker, the motor drive gear on motor rotating shaft is connected with the output drive gear of output shaft through the meshing transmission of variable speed gear group, be equipped with MCU central processing unit, clock module, AD sampling module, 4G communication module, power module, storage module, motor drive module and display unit on the circuit board, and the power cord of power module is connected with the wiring terminal of miniature circuit breaker, and AD sampling module is connected with miniature circuit breaker through wire, and the working state signal of miniature circuit breaker is gathered.

Description

Technical Field

[0001] This utility model relates to an improvement of a miniature circuit breaker, belonging to the field of low-voltage electrical equipment technology. Specifically, it is a remote reclosing control device for energy metering of a miniature circuit breaker, which can perform electricity metering and data transmission remotely, and at the same time perform remote automatic reclosing operation on the miniature circuit breaker. Background Technology

[0002] Currently, miniature circuit breakers (MCBs) are the most widely used terminal protection electrical appliances in building electrical terminal distribution devices. These MCBs consist of a closing / opening mechanism, contacts, protection devices, and an arc-extinguishing system. The most commonly used type today is the manually operated MCB, where the circuit is switched on and off manually by moving the closing / opening mechanism. With the development of science and technology, smart home appliances are becoming increasingly widespread, and MCBs are also being equipped with intelligent control systems to enable remote control of their closing / opening operations. For example, the Chinese patent application "A Closing / Opening Mechanism for a Circuit Breaker" filed by YueDong Intelligent Electric Appliances Co., Ltd. on March 19, 2015, with patent number CN201520156003.4, discloses a mechanism where a gear disc, driven by a motor and linked to the circuit breaker's closing / opening mechanism, rotates in one direction to achieve a closing operation, and a lever is triggered to actuate the circuit breaker's tripping element to achieve a opening operation when the gear disc rotates in the other direction. Its drawback is that it cannot achieve electricity metering and remote data control transmission for the circuit breaker. Summary of the Invention

[0003] The purpose of this utility model is to provide a remote reclosing control device for miniature circuit breakers that is installed and used in conjunction with a miniature circuit breaker. This device features high integration, compact structure, and small space occupation. It can measure and meter the power consumption of the miniature circuit breaker load, realize data storage and remote transmission, and remotely control the opening and closing of the miniature circuit breaker by driving the motor through remote control, thereby realizing remote control of reclosing operation.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] This is a remote reclosing control device for energy metering and transmission in miniature circuit breakers, comprising a housing, a display screen, a motor, an output shaft, a motor drive gear, a speed-changing gear set, an output drive gear, and a circuit board. The housing is bolted to the side wall of the miniature circuit breaker's outer casing. The display screen is fixedly mounted on the front panel of the housing. The motor, output shaft, motor drive gear, speed-changing gear set, output drive gear, and circuit board are all housed within the housing cavity. The motor is electrically connected to a motor drive module via wires. The display screen is electrically connected to a display unit via wires. The output drive gear is fixedly mounted on the inner end of the output shaft, and the outer end of the output shaft passes through the housing and the side wall of the miniature circuit breaker, and is fixedly connected to the rotating shaft of the opening and closing mechanism within the miniature circuit breaker cavity.

[0006] The feature is that: a motor drive gear is fixedly provided on the rotating shaft of the motor, the motor drive gear is meshed and connected to the speed change gear set, and the speed change gear set is meshed and connected to the output drive gear.

[0007] The housing has wiring holes on its side wall; the circuit board has an MCU central processing unit, a clock module, an AD sampling module, a 4G communication module, a power module, a storage module, a motor drive module, and a display unit. The power supply wires of the power module pass through the wiring holes and are electrically connected to the L and N terminals of the miniature circuit breaker, respectively; the 12V terminal of the power module is electrically connected to the motor drive module via a wire, the 3.3V terminal of the power module is electrically connected to the MCU central processing unit via a wire, and the 3.8V terminal of the power module is electrically connected to the 4G communication module via a wire.

[0008] The MCU (Microcontroller Unit) is connected to the clock module via wires, enabling data transmission between them. The MCU is also connected to the AD (Analog-to-Digital) sampling module via wires, allowing the AD module to transmit data to the MCU. Furthermore, the MCU is connected to the 4G communication module via wires, enabling data transmission between them. The MCU is also connected to the storage module via wires, enabling data transmission between them. Additionally, the MCU is connected to the motor drive module via wires, enabling data transmission to the motor drive module. Finally, the MCU is connected to the display unit via wires, enabling data transmission to the display unit. The AD sampling module is electrically connected to the miniature circuit breaker via wires, allowing the MCU to acquire the operating status signals of the miniature circuit breaker.

[0009] The power module comprises resistors 1, 2, 3, 4, 5, 6, 7, and 8; capacitors 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, and 11; common-mode inductors 1, 2, 3, 4, and 5; diodes 1, 2, 3, and 4; and chips 1, 2, and 3. The circuit consists of three chips: a PN8039 chip (chip 1), a TPS54302DDCR chip (chip 2), and an HT7333 chip (chip 3). The L signal input terminal of the first common-mode inductor is connected to the L terminal of the miniature circuit breaker via a first resistor, and the N signal input terminal of the first common-mode inductor is connected to the N terminal of the miniature circuit breaker. One end of the second resistor connected in parallel with the first capacitor is electrically connected to the L signal input terminal of the first common-mode inductor, and the other end is connected to the N signal input terminal of the first common-mode inductor. The input terminals are electrically connected; the N-signal output terminal of common-mode inductor 1 is connected to digital signal ground through inductor 3; the L-signal output terminal of common-mode inductor 1 is connected to the anode of diode 1; the cathode of diode 1 is connected to the anode of diode 2; the cathode of diode 2 is connected to the anode of capacitor 2 through inductor 2; the cathode of capacitor 2 is connected to digital signal ground; pins 5, 6, 7, and 8 of chip 1 are all electrically connected to the anode of capacitor 2; pins 1 and 2 of chip 1 are both connected to diode 4. The negative terminal is connected. Pin 2 is connected to pin 4 through capacitor 3. Pin 4 is connected to the negative terminal of diode 3. The positive terminal of diode 4 is connected to digital signal ground. The positive terminal of diode 3 is connected to the 12V terminal, the positive terminal of capacitor 4, and pin 3 of chip 2. The positive terminal of diode 3 is connected to the negative terminal of diode 4 through inductor 4. The negative terminal of capacitor 4 is connected to digital signal ground. One end of resistor 3 and capacitor 5 connected in parallel is connected to the 12V terminal, and the other end is connected to digital signal ground.

[0010] Pin 3 of chip 2 is electrically connected to pin 5 through resistor 5. Pin 5 is connected to digital signal ground through resistor 4. Pin 1 is connected to digital signal ground. Pin 6 is connected to pin 2 through capacitor 6. Pin 4 is connected to digital signal ground through resistor 8. Pin 2 is electrically connected to pin 2 of chip 3 through inductor 5.

[0011] The third pin of the No. 3 chip is connected to the 3.3V terminal and the positive terminal of the No. 11 capacitor. The negative terminal of the No. 11 capacitor is connected to the digital signal ground. The first pin is connected to the digital signal ground, and the second pin is connected to the 3.8V terminal. One end of the parallel connection of the No. 7 resistor and the No. 7 capacitor is electrically connected to the second pin of the No. 3 chip through the No. 6 resistor, and the other end is connected to the digital signal ground through the No. 8 resistor. The second pin of the No. 3 chip is connected to the positive terminal of the No. 9 capacitor, and the negative terminal of the No. 9 capacitor is connected to the digital signal ground. One end of the parallel connection of the No. 8 capacitor and the No. 10 capacitor is electrically connected to the second pin of the No. 3 chip, and the other end is connected to the digital signal ground.

[0012] The 4G communication module is composed of a fourth chip, which is an ML307A type chip. Pins 1 and 10 of the fourth chip are connected to digital signal ground, pins 44 and 43 are electrically connected to the 3.8V terminal of the power supply module, and pin 35 is connected to the antenna.

[0013] The storage module is composed of chip number 5, which is an FM24CL04 chip. Pins 1, 2, 3 and 4 of chip number 5 are connected to digital signal ground, and pin 8 is electrically connected to the 3.3V terminal of the power supply module.

[0014] The motor drive module is composed of chip number six, which is an L9110S type chip. Pins 1 and 4 of chip number six are electrically connected to the motor's terminals, pins 2 and 3 are electrically connected to the 12V terminals of the power supply module, and pins 8 and 5 are connected to the digital signal ground.

[0015] The display unit consists of a chip number 7 and a resistor number 9. The chip number 7 is a VK1088B type chip. The 8th pin of the chip number 7 is electrically connected to the 3.3V terminal of the power supply module, and the 7th pin is electrically connected to the 3.3V terminal of the power supply module through the resistor number 9.

[0016] The clock module consists of a chip (number 8), a crystal oscillator (number 1), a diode (number 5), and a battery. The chip (number 8) is a DS1302 type chip. Pin 1 of the chip (number 8) is electrically connected to the 3.3V terminal of the power supply module. Pin 2 is electrically connected to pin 3 through the crystal oscillator (number 1). Pin 4 is connected to the digital signal ground. Pin 8 is connected to the negative terminal of the diode (number 5). The positive terminal of the diode (number 5) is connected to the positive terminal of the battery. The negative terminal of the battery is connected to the digital signal ground.

[0017] When used on a single-phase miniature circuit breaker, the corresponding AD sampling module consists of a current transformer (number 1), resistors 10, 11, 12, 13, 14, 15, 16, 17, 18, capacitors 12, 13, 14, 15, and a chip (number 9). The chip 9 is a BL0942 type. The coil of the current transformer (number 1) is connected to the power supply line of the L terminal of the single-phase miniature circuit breaker. The positive output terminal of the current transformer (number 1) is electrically connected to pin 2 of the chip 9 through resistor 11, and the negative output terminal of the current transformer (number 1) is electrically connected to pin 3 of the chip 9 through resistor 12. The positive output terminal is electrically connected to the negative output terminal of the current transformer No. 1 through resistor No. 10; one end of resistors No. 13, No. 14, No. 15, No. 16, and No. 17 connected in series is connected to the N terminal of the single-phase miniature circuit breaker, and the other end is connected to pin 4 of chip No. 9; pin 1 of chip No. 9 is electrically connected to the 3.3V terminal of the power module; pin 1 is connected to digital signal ground through capacitor No. 14; pin 2 is connected to digital signal ground through capacitor No. 12; pin 3 is connected to digital signal ground through capacitor No. 13; pin 4 is connected to digital signal ground through capacitor No. 15; pin 4 is connected to digital signal ground through resistor No. 18; pin 5 is connected to digital signal ground; and pin 7 is electrically connected to the 3.3V terminal of the power module.

[0018] When used in a single-phase miniature circuit breaker, the corresponding MCU central processing unit consists of a crystal oscillator (number 2), a capacitor (number 16), a resistor (number 19), and a chip (number 10). The chip (number 10) is an HT5017 type. Pin 48 of the chip (number 10) is connected to digital signal ground via capacitor (number 16), and pin 48 is electrically connected to the 3.3V terminal of the power module via resistor (number 19). Pin 60 is electrically connected to the 3.3V terminal of the power module, pin 62 is connected to digital signal ground, and pin 64 is electrically connected to pin 1 via the crystal oscillator (number 2). Pin 36 of the chip (number 10) is electrically connected to pin 17 of chip 4 in the 4G communication module, and pin 35 of the chip (number 10) is electrically connected to pin 18 of chip 4 in the 4G communication module. Pin 37 of the chip (number 10) is electrically connected to pin 5 of chip 5 in the storage module, and pin 38 of the chip (number 10) is electrically connected to pin 6 of chip 5. Pin 39 of chip 10 is electrically connected to pin 7 of chip 5; pin 46 of chip 10 is electrically connected to pin 6 of chip 6 in the motor drive module, and pin 47 of chip 10 is electrically connected to pin 7 of chip 6; pin 2 of chip 10 is electrically connected to pin 5 of chip 7 in the display unit, pin 3 of chip 10 is electrically connected to pin 4 of chip 7, and pin 4 of chip 10 is electrically connected to pin 3 of chip 7; pin 20 of chip 10 is electrically connected to pin 7 of chip 8 in the clock module, pin 21 of chip 10 is electrically connected to pin 6 of chip 8, and pin 22 of chip 10 is electrically connected to pin 5 of chip 8; pin 17 of chip 10 is electrically connected to pin 10 of chip 9 in the AD sampling module, pin 18 of chip 10 is electrically connected to pin 9 of chip 9, and pin 19 of chip 10 is electrically connected to pin 8 of chip 9.

[0019] As an improvement, when used on a three-phase miniature circuit breaker, the corresponding AD sampling module consists of current transformers No. 2, No. 3, No. 4, resistors No. 20, No. 21, No. 22, No. 23, No. 24, No. 25, No. 26, No. 27, No. 28, No. 29, No. 30, No. 31, No. 32, No. 33, No. 34, No. 35, No. 36, No. 37, No. 38, No. 39, No. 40, No. 41, No. 42, No. 43, No. 44, and No. 45. The system consists of resistors 46, 47, 48, 49, 50, 51, and 52; capacitors 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29; capacitors 30, 31, 32, 33, 34, 35, 36, 37, 38, and 39; a crystal oscillator; and chip 11, wherein chip 11 is an RN8302 type chip.

[0020] The coil of current transformer No. 2 is connected to the power supply line of the L1 terminal of the three-phase miniature circuit breaker; the coil of current transformer No. 3 is connected to the power supply line of the L2 terminal of the three-phase miniature circuit breaker; the coil of current transformer No. 4 is connected to the power supply line of the L3 terminal of the three-phase miniature circuit breaker; and the N terminal of the three-phase miniature circuit breaker is connected to the analog signal ground.

[0021] The positive output terminal of current transformer No. 2 is electrically connected to pin 4 of chip No. 11 through resistor No. 20. The negative output terminal of current transformer No. 2 is electrically connected to pin 5 of chip No. 11 through resistor No. 22. The negative output terminal of current transformer No. 2 is connected to analog signal ground. Pin 4 of chip No. 11 is connected to analog signal ground through capacitor No. 31. Pin 5 of chip No. 11 is connected to analog signal ground through capacitor No. 32. The positive output terminal of current transformer No. 2 is connected to analog signal ground through resistor No. 21. One end of resistors No. 29, No. 30, No. 31, No. 32 and No. 33 connected in series is connected to the L1 terminal of a three-phase miniature circuit breaker, and the other end is connected to pin 12 of chip No. 11. Pin 12 of chip No. 11 is connected to analog signal ground through capacitor No. 25. Pin 13 of chip No. 11 is connected to analog signal ground through capacitor No. 26. Pin 13 of chip No. 11 is connected to analog signal ground through resistor No. 35. The connection terminal of resistors No. 32 and No. 33 is connected to analog signal ground through resistor No. 34.

[0022] The positive output terminal of current transformer No. 3 is electrically connected to pin 7 of chip No. 11 through resistor No. 23. The negative output terminal of current transformer No. 3 is electrically connected to pin 8 of chip No. 11 through resistor No. 25. The negative output terminal of current transformer No. 3 is connected to analog signal ground. Pin 7 of chip No. 11 is connected to analog signal ground through capacitor No. 33. Pin 8 of chip No. 11 is connected to analog signal ground through capacitor No. 34. The positive output terminal of current transformer No. 3 is connected to analog signal ground through resistor No. 24. One end of resistors No. 36, No. 37, No. 38, No. 39, and No. 40 connected in series is connected to the L2 terminal of the three-phase miniature circuit breaker, and the other end is connected to pin 14 of chip No. 11. Pin 14 of chip No. 11 is connected to analog signal ground through capacitor No. 27. Pin 15 of chip No. 11 is connected to analog signal ground through capacitor No. 28. Pin 15 of chip No. 11 is connected to analog signal ground through resistor No. 42. The connection terminal of resistors No. 39 and No. 40 is connected to analog signal ground through resistor No. 41.

[0023] The positive output terminal of current transformer No. 4 is electrically connected to pin 10 of chip No. 11 through resistor No. 26. The negative output terminal of current transformer No. 4 is electrically connected to pin 11 of chip No. 11 through resistor No. 28. The negative output terminal of current transformer No. 4 is connected to analog signal ground. Pin 10 of chip No. 11 is connected to analog signal ground through capacitor No. 35. Pin 11 of chip No. 11 is connected to analog signal ground through capacitor No. 36. The positive output terminal of current transformer No. 4 is connected to analog signal ground through resistor No. 27. One end of resistors No. 43, No. 44, No. 45, No. 46, and No. 47 connected in series is connected to the L3 terminal of a three-phase miniature circuit breaker, and the other end is connected to pin 16 of chip No. 11. Pin 16 of chip No. 11 is connected to analog signal ground through capacitor No. 29. Pin 17 of chip No. 11 is connected to analog signal ground through capacitor No. 30. Pin 17 of chip No. 11 is connected to analog signal ground through resistor No. 49. The connection terminal of resistors No. 46 and No. 47 is connected to analog signal ground through resistor No. 48.

[0024] Pin 9 of chip 11 is electrically connected to the 3.3V terminal of the power module through resistor 50. Pin 9 of chip 11 is connected to analog signal ground through capacitor 19. Pin 9 of chip 11 is connected to the positive terminal of capacitor 20. The negative terminal of capacitor 20 is connected to analog signal ground. The 3.3V terminal of the power module is connected to digital signal ground through capacitor 17. The 3.3V terminal of the power module is connected to the positive terminal of capacitor 18. The negative terminal of capacitor 18 is connected to digital signal ground.

[0025] Pin 3 of chip 11 is connected to analog signal ground via capacitor 21. Pin 3 of chip 11 is connected to the positive terminal of capacitor 22, and the negative terminal of capacitor 22 is connected to analog signal ground. Pin 38 of chip 11 is connected to digital signal ground via capacitor 23. Pin 38 of chip 11 is connected to the positive terminal of capacitor 24, and the negative terminal of capacitor 24 is connected to digital signal ground. One end of resistor 51 is connected to digital signal ground, and the other end is connected to analog signal ground.

[0026] Pin 6 of chip 11 is connected to analog signal ground; pins 44, 43, 42, and 39 are connected to digital signal ground; pins 41 and 40 are electrically connected to the 3.3V terminal of the power supply module; pin 37 is connected to digital signal ground via capacitor #37; pin 36 is connected to digital signal ground via capacitor #38; pin 37 is electrically connected to pin 36 via resistor #52; pin 37 is electrically connected to pin 36 via crystal oscillator #3; pin 28 is electrically connected to the 3.3V terminal of the power supply module; pin 29 is connected to digital signal ground; pin 28 is electrically connected to pin 29 via capacitor #39; pins 20 and 21 are connected to analog signal ground.

[0027] When used on a three-phase miniature circuit breaker, the corresponding MCU central processing unit consists of resistors 53, 54, 55, and 56; capacitors 40, 41, 42, 43, 44, and 45; a crystal oscillator; and chip 12. Chip 12 is an FM33LE016 type chip. Pin 1 of chip 12 is connected to digital signal ground via capacitor 40, and pin 1 of chip 12 is electrically connected to the 3.3V terminal of the power supply module via resistor 53. Pins 34 and 52 of chip 12 are connected to the 3.3V terminal of the power supply module. The V terminal block has pin 33 connected to digital signal ground; pin 54 of chip 12 is electrically connected to the 3.3V terminal block of the power module via resistor 55, and pin 54 is also electrically connected to digital signal ground via resistor 54, capacitor 41, and capacitor 42; pins 53 and 51 of chip 12 are connected to digital signal ground, pin 49 is connected to digital signal ground via capacitor 44, and pin 48 is connected to digital signal ground via capacitor 45; one end of the series connection of resistor 56 and capacitor 43 is electrically connected to digital signal ground, and the other end is electrically connected to pin 50 of chip 12; pin 49 is electrically connected to pin 48 via crystal oscillator 4.

[0028] Pin 2 of chip 12 is electrically connected to pin 17 of chip 4 in the 4G communication module; pin 3 of chip 12 is electrically connected to pin 18 of chip 4 in the 4G communication module; pin 12 of chip 12 is electrically connected to pin 5 of chip 5 in the storage module; pin 11 of chip 12 is electrically connected to pin 6 of chip 5; pin 10 of chip 12 is electrically connected to pin 7 of chip 5; pin 61 of chip 12 is electrically connected to pin 6 of chip 6 in the motor drive module; pin 60 of chip 12 is electrically connected to pin 7 of chip 6; pin 32 of chip 12 is electrically connected to pin 5 of chip 7 in the display unit. Pin 31 of chip 12 is electrically connected to pin 4 of chip 7; pin 30 of chip 12 is electrically connected to pin 3 of chip 7; pin 17 of chip 12 is electrically connected to pin 7 of chip 8 in the clock module; pin 18 of chip 12 is electrically connected to pin 6 of chip 8; pin 19 of chip 12 is electrically connected to pin 5 of chip 8; pin 26 of chip 12 is electrically connected to pin 34 of chip 11 in the AD sampling module; pin 27 of chip 12 is electrically connected to pin 33 of chip 11; pin 28 of chip 12 is electrically connected to pin 32 of chip 11; pin 29 of chip 12 is electrically connected to pin 35 of chip 11.

[0029] The beneficial effects of this utility model are as follows: When used in conjunction with a miniature circuit breaker, it is integrated into a single unit, featuring high integration, compact structure, and small space occupation. It can measure and meter the power consumption of the miniature circuit breaker load equipment, realize data storage and remote transmission, and remotely control the motor to drive the miniature circuit breaker to open and close, realizing remote control reclosing operation. It is convenient, fast, time-saving, labor-saving, reduces labor intensity, and improves work efficiency. Attached Figure Description

[0030] Figure 1 This is a circuit block diagram of the present invention;

[0031] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0032] Figure 3 This is a schematic diagram of the motor installation structure inside the housing according to this utility model;

[0033] Figure 4 This is a circuit diagram of the power module of this utility model;

[0034] Figure 5 This is a circuit schematic diagram of the 4G communication module of this utility model;

[0035] Figure 6This is a circuit schematic diagram of the storage module of this utility model;

[0036] Figure 7 This is a circuit diagram of the motor drive module of this utility model;

[0037] Figure 8 This is a circuit diagram of the display unit of this utility model;

[0038] Figure 9 This is a circuit schematic diagram of the clock module of this utility model;

[0039] Figure 10 This is a circuit diagram of the AD sampling module used in the single-phase miniature circuit breaker of this utility model;

[0040] Figure 11 This is the circuit schematic diagram of the MCU central processing unit used in the single-phase miniature circuit breaker of this utility model;

[0041] Figure 12 This is a circuit diagram of the AD sampling module used in the three-phase miniature circuit breaker of this utility model;

[0042] Figure 13 This is the circuit diagram of the MCU central processing unit used in the three-phase miniature circuit breaker of this utility model.

[0043] In the diagram: 1. Miniature circuit breaker; 2. Motor; 3. Display screen; 4. MCU central processing unit; 5. Clock module; 6. AD sampling module; 7. 4G communication module; 8. Power supply module; 9. Storage module; 10. Motor drive module; 11. Display unit; 12. Housing; 13. Wiring hole; 14. Output shaft; 15. Motor drive gear; 16. Speed ​​change gear set; 17. Output drive gear. Detailed Implementation

[0044] Example 1: Refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 This utility model is used to manufacture miniature circuit breakers adapted for single-phase applications.

[0045] This is a remote reclosing control device for energy metering and transmission in miniature circuit breakers, comprising a housing 12, a display screen 3, a motor 2, an output shaft 14, a motor drive gear 15, a speed gear set 16, an output drive gear 17, and a circuit board. The housing 12 is bolted to the side wall of the miniature circuit breaker 1. The display screen 3 is fixedly mounted on the front panel of the housing 12. The motor 2, output shaft 14, motor drive gear 15, speed gear set 16, output drive gear 17, and circuit board are all housed within the cavity of the housing 12. The motor 2 is electrically connected to a motor drive module 10 via wires, and the motor drive module 10 controls the working state of the motor 2. The display screen 3 is electrically connected to a display unit 11 via wires, and the display unit 11 controls the working state of the display screen 3. The output drive gear 17 is fixedly mounted on the inner end of the output shaft 14, and the outer end of the output shaft 14 passes through the housing 12 and the side wall of the miniature circuit breaker 1, and is fixedly connected to the rotating shaft of the opening and closing mechanism within the cavity of the miniature circuit breaker 1.

[0046] The feature is that: a motor drive gear 15 is fixedly provided on the rotating shaft of the motor 2, the motor drive gear 15 is meshed and connected to the speed change gear set 16, and the speed change gear set 16 is meshed and connected to the output drive gear 17; the rotation state of the output shaft 14 is controlled by the motor 2, thereby realizing the operation of the opening and closing mechanism in the cavity of the miniature circuit breaker 1.

[0047] The housing 12 has a wiring hole 13 on its side wall; the circuit board has an MCU central processing unit 4, a clock module 5, an AD sampling module 6, a 4G communication module 7, a power module 8, a storage module 9, a motor drive module 10, and a display unit 11. The power supply wire of the power module 8 passes through the wiring hole 13 and is electrically connected to the L terminal and N terminal of the miniature circuit breaker 1, respectively, so that the power supply module 8 is powered by the power supply of the miniature circuit breaker 1 itself; the 12V terminal of the power module 8 is electrically connected to the motor drive module 10 through a wire to provide power to the motor drive module 10; the 3.3V terminal of the power module 8 is electrically connected to the MCU central processing unit 4 through a wire to provide power to the MCU central processing unit 4; and the 3.8V terminal of the power module 8 is electrically connected to the 4G communication module 7 through a wire to provide power to the 4G communication module 7.

[0048] The MCU central processing unit 4 is connected to the clock module 5 via wires, enabling data transmission between the MCU central processing unit 4 and the clock module 5; the MCU central processing unit 4 is connected to the AD sampling module 6 via wires, enabling the AD sampling module 6 to transmit data to the MCU central processing unit 4; the MCU central processing unit 4 is connected to the 4G communication module 7 via wires, enabling data transmission between the MCU central processing unit 4 and the 4G communication module 7; the MCU central processing unit 4 is connected to the storage module 9 via wires, enabling data transmission between the MCU central processing unit 4 and the storage module 9; the MCU central processing unit 4 is connected to the motor drive module 10 via wires, enabling the MCU central processing unit 4 to transmit data to the motor drive module 10; the MCU central processing unit 4 is connected to the display unit 11 via wires, enabling the MCU central processing unit 4 to transmit data to the display unit 11; the AD sampling module 6 is electrically connected to the miniature circuit breaker 1 via wires, and the AD sampling module 6 collects the operating status signal of the miniature circuit breaker 1.

[0049] The power module 8, such as Figure 4As shown, the resistors consist of resistors R1, R2, R3, R4, R5, R6, R7, R8; capacitors C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11; common-mode inductors L1, L2, L3, L4, L5; diodes D1, D2, D3, D4, D5; and diodes D2, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11; common-mode inductors L1, L2, L3, L4, L5; and diodes D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11; common-mode inductors L1, L2, L3, L4, D5; and common-mode inductors L1, L2, L3, L4, D5; and common-mode inductors L1, L2, L3, L4, D5; and common-mode inductors L1, L2, L3, L4, D5, D6, L7, L8, D9, D10, D11; common-mode inductors L1, L2, L3, L4, L5; and common-mode inductors L1, L2, L3, L4, L5; and common-mode inductors L1, L2, L3, L4, L5, D1, D2, D3, D10, D11, D12, D11, D12, D11, D12, D11, D12, D13, D14, D15, D12, D11, D12, D12, D13, D14, D15, D12, D14, D15, D16, D17, D18, D11, D12, D13, D14, D15, D16, The circuit consists of diode D4, chip U1, chip U2, and chip U3. Chip U1 is a PN8039 type, chip U2 is a TPS54302DDCR type, and chip U3 is an HT7333 type. The L signal input terminal of common-mode inductor L1 is connected to the L terminal of a single-phase miniature circuit breaker 1 via resistor R1, and the N signal input terminal of common-mode inductor L1 is also connected to the N terminal of the single-phase miniature circuit breaker 1. One end of resistor R2 connected in parallel with capacitor C1 is electrically connected to the L signal input terminal of common-mode inductor L1. The other end is electrically connected to the N signal input terminal of common-mode inductor L1; the N signal output terminal of common-mode inductor L1 is connected to digital signal ground through inductor L3; the L signal output terminal of common-mode inductor L1 is connected to the positive terminal of diode D1; the negative terminal of diode D1 is connected to the positive terminal of diode D2; the negative terminal of diode D2 is connected to the positive terminal of capacitor C2 through inductor L2; the negative terminal of capacitor C2 is connected to digital signal ground; pins 5, 6, 7, and 8 of chip U1 are all electrically connected to the positive terminal of capacitor C2; pin 1 of chip U1 is connected to pin 2... Pin 2 is electrically connected to the negative terminal of diode D4 (number 4). Pin 4 is electrically connected to the negative terminal of diode D3 (number 3) via capacitor C3 (number 3). The positive terminal of diode D4 (number 4) is connected to digital signal ground. The positive terminal of diode D3 (number 3) is connected to the 12V terminal, the positive terminal of capacitor C4 (number 4) is connected to pin 3 of chip U2 (number 2). The positive terminal of diode D3 (number 3) is electrically connected to the negative terminal of diode D4 (number 4) via inductor L4 (number 4). The negative terminal of capacitor C4 (number 4) is connected to digital signal ground. One end of the parallel connection of resistor R3 (number 3) and capacitor C5 (number 5) is connected to the 12V terminal, and the other end is connected to digital signal ground.

[0050] Pin 3 of chip U2 is electrically connected to pin 5 via resistor R5. Pin 5 is connected to digital signal ground via resistor R4. Pin 1 is connected to digital signal ground. Pin 6 is connected to pin 2 via capacitor C6. Pin 4 is connected to digital signal ground via resistor R8. Pin 2 is electrically connected to pin 2 of chip U3 via inductor L5.

[0051] The third pin of the No. 3 chip U3 is connected to the 3.3V terminal and the positive terminal of the No. 11 capacitor C11. The negative terminal of the No. 11 capacitor C11 is connected to the digital signal ground. The first pin is connected to the digital signal ground, and the second pin is connected to the 3.8V terminal. One end of the parallel connection of the No. 7 resistor R7 and the No. 7 capacitor C7 is electrically connected to the second pin of the No. 3 chip U3 through the No. 6 resistor R6, and the other end is connected to the digital signal ground through the No. 8 resistor R8. The second pin of the No. 3 chip U3 is connected to the positive terminal of the No. 9 capacitor C9, and the negative terminal of the No. 9 capacitor C9 is connected to the digital signal ground. One end of the parallel connection of the No. 8 capacitor C8 and the No. 10 capacitor C10 is electrically connected to the second pin of the No. 3 chip U3, and the other end is connected to the digital signal ground.

[0052] The 4G communication module 7, such as Figure 5 As shown, it is composed of chip U4, which is an ML307A type chip. Pins 1 and 10 of chip U4 are connected to digital signal ground, pins 44 and 43 are electrically connected to the 3.8V terminal of power module 8, and pin 35 is connected to the antenna.

[0053] The storage module 9, as described above Figure 6 As shown, it is composed of chip U5, which is an FM24CL04 chip. Pins 1, 2, 3 and 4 of chip U5 are connected to digital signal ground, and pin 8 is electrically connected to the 3.3V terminal of power module 8.

[0054] The motor drive module 10, as described above Figure 7 As shown, it is composed of chip U6, which is an L9110S type chip. Pin 1 and pin 4 of chip U6 are electrically connected to the wiring terminals of motor 2, pin 2 and pin 3 are electrically connected to the 12V wiring terminals of power module 8, and pin 8 and pin 5 are connected to digital signal ground.

[0055] The display unit 11, as described above Figure 8 As shown, it consists of chip U7 (number 7) and resistor R9 (number 9). Chip U7 is a VK1088B type chip. Pin 8 of chip U7 is electrically connected to the 3.3V terminal of power module 8, and pin 7 is electrically connected to the 3.3V terminal of power module 8 through resistor R9.

[0056] The clock module 5, as described above Figure 9As shown, it consists of chip U8 (number 8), crystal oscillator CY1 (number 1), diode D5 (number 5), and battery BAT. Chip U8 is a DS1302 type chip. Pin 1 of chip U8 is electrically connected to the 3.3V terminal of power module 8. Pin 2 is electrically connected to pin 3 through crystal oscillator CY1. Pin 4 is connected to digital signal ground. Pin 8 is connected to the negative terminal of diode D5. The positive terminal of diode D5 is connected to the positive terminal of battery BAT. The negative terminal of battery BAT is connected to digital signal ground.

[0057] When used on a single-phase miniature circuit breaker 1, the corresponding AD sampling module 6 is as follows: Figure 10 As shown, the circuit consists of a current transformer CT1 (number 1), resistors R10 (number 10), R11 (number 11), R12 (number 12), R13 (number 13), R14 (number 14), R15 (number 15), R16 (number 16), R17 (number 17), R18 (number 18), capacitors C12 (number 12), C13 (number 13), C14 (number 14), C15 (number 15), and chip U9 (number 9). Chip U9 is a BL0942 type chip. The coil of current transformer CT1 is connected to the power supply line of the L terminal of a single-phase miniature circuit breaker 1. The positive output terminal of current transformer CT1 is electrically connected to pin 2 of chip U9 via resistor R11 (number 11), and the negative output terminal of current transformer CT1 is electrically connected to pin 3 of chip U9 via resistor R12 (number 12). The output of current transformer CT1... The positive terminal is electrically connected to the negative output terminal of current transformer CT1 through resistor R10 (number 10); one end of resistors R13 (number 13), R14 (number 14), R15 (number 15), R16 (number 16), and R17 (number 17) connected in series is connected to the N terminal of single-phase miniature circuit breaker 1, and the other end is connected to pin 4 of chip U9 (number 9); pin 1 of chip U9 is electrically connected to the 3.3V terminal of power module 8; pin 1 is connected to digital signal ground through capacitor C14 (number 14); pin 2 is connected to digital signal ground through capacitor C12 (number 12); pin 3 is connected to digital signal ground through capacitor C13 (number 13); pin 4 is connected to digital signal ground through capacitor C15 (number 15); pin 4 is connected to digital signal ground through resistor R18 (number 18); pin 5 is connected to digital signal ground; and pin 7 is electrically connected to the 3.3V terminal of power module 8.

[0058] When used on a single-phase miniature circuit breaker 1, the corresponding MCU central processing unit 4, such as... Figure 11As shown, the circuit consists of a crystal oscillator CY2 (number 2), a capacitor C16 (number 16), a resistor R19 (number 19), and a chip U10 (number 10). Chip U10 is an HT5017 type. Pin 48 of chip U10 is connected to digital signal ground via capacitor C16, and is also electrically connected to the 3.3V terminal of power module 8 via resistor R19. Pin 60 is electrically connected to the 3.3V terminal of power module 8, pin 62 is connected to digital signal ground, and pin 64 is connected to the crystal oscillator CY2 (number 2) and... Pin 1 is electrically connected; pin 36 of chip U10 is electrically connected to pin 17 of chip U4 in 4G communication module 7; pin 35 of chip U10 is electrically connected to pin 18 of chip U4 in 4G communication module 7; pin 37 of chip U10 is electrically connected to pin 5 of chip U5 in storage module 9; pin 38 of chip U10 is electrically connected to pin 6 of chip U5; pin 39 of chip U10 is electrically connected to pin 7 of chip U5. Connections: Pin 46 of chip U10 is electrically connected to pin 6 of chip U6 in motor drive module 10; pin 47 of chip U10 is electrically connected to pin 7 of chip U6; pin 2 of chip U10 is electrically connected to pin 5 of chip U7 in display unit 11; pin 3 of chip U10 is electrically connected to pin 4 of chip U7; pin 4 of chip U10 is electrically connected to pin 3 of chip U7; pin 20 of chip U10 is electrically connected to... In clock module 5, pin 7 of chip U8 (number 8) is electrically connected; pin 21 of chip U10 (number 10) is electrically connected to pin 6 of chip U8; pin 22 of chip U10 (number 10) is electrically connected to pin 5 of chip U8; pin 17 of chip U10 (number 10) is electrically connected to pin 10 of chip U9 (number 9) in AD sampling module 6; pin 18 of chip U10 (number 10) is electrically connected to pin 9 of chip U9; and pin 19 of chip U10 (number 10) is electrically connected to pin 8 of chip U9.

[0059] In this invention, the power supply module 8 draws AC power from the input terminal of the single-phase miniature circuit breaker 1 and converts it into three DC power supplies of DC 12V, DC 3.8V, and DC 3.3V through an AC-DC conversion circuit. These supplies power to the MCU central processing unit 4, the 4G communication module 7, and the motor drive module 10, respectively. The 4G communication module 7 is a 4G-CAT1 communication module. The AD sampling module 6 collects analog electrical parameters of the miniature circuit breaker 1 and converts them into digital signals for power measurement. The data is then transmitted to the MCU central processing unit 4 via the SPI bus. The MCU central processing unit 4 exchanges data with the storage module 9 through the IIC communication interface and stores the measured power data to ensure data reliability. The MCU central processing unit 4 displays the measured electrical parameters through the display unit 11. The MCU central processing unit 4 is connected to the 4G communication module 7 through the UART communication interface to realize remote data transmission and control, and uploads the electrical parameters to the platform in real time. The platform then forwards them to the user, enabling the user to remotely view the power consumption. The user can also send control signals to the MCU central processing unit 4 in this way. The MCU central processing unit 4 controls the motor drive module 10 according to the instructions to perform corresponding action control on the miniature circuit breaker 1, thereby realizing the purpose of remote reclosing operation of the miniature circuit breaker 1.

[0060] Example 2: Refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 12 , Figure 13 This utility model is designed to manufacture miniature circuit breakers adapted for use with three-phase circuit breakers.

[0061] This is a remote reclosing control device for energy metering and transmission in miniature circuit breakers, comprising a housing 12, a display screen 3, a motor 2, an output shaft 14, a motor drive gear 15, a speed gear set 16, an output drive gear 17, and a circuit board. The housing 12 is bolted to the side wall of the miniature circuit breaker 1. The display screen 3 is fixedly mounted on the front panel of the housing 12. The motor 2, output shaft 14, motor drive gear 15, speed gear set 16, output drive gear 17, and circuit board are all disposed within the cavity of the housing 12. The motor 2 is electrically connected to a motor drive module 10 via wires. The display screen 3 is electrically connected to a display unit 11 via wires. The output drive gear 17 is fixedly mounted on the inner end of the output shaft 14, and the outer end of the output shaft 14 passes through the housing 12 and the side wall of the miniature circuit breaker 1 and is fixedly connected to the rotating shaft of the opening and closing mechanism within the cavity of the miniature circuit breaker 1.

[0062] The feature is that: a motor drive gear 15 is fixedly provided on the rotating shaft of the motor 2, the motor drive gear 15 is meshed and connected to the speed change gear set 16, and the speed change gear set 16 is meshed and connected to the output drive gear 17.

[0063] The housing 12 has a wiring hole 13 on its side wall; the circuit board has an MCU central processing unit 4, a clock module 5, an AD sampling module 6, a 4G communication module 7, a power module 8, a storage module 9, a motor drive module 10, and a display unit 11. The power supply wire of the power module 8 passes through the wiring hole 13 and is electrically connected to the L1 terminal and N terminal of the three-phase miniature circuit breaker 1, respectively, so that the power supply module 8 can be powered by the power supply of the miniature circuit breaker 1 itself; the 12V terminal of the power module 8 is electrically connected to the motor drive module 10 through a wire to provide power to the motor drive module 10; the 3.3V terminal of the power module 8 is electrically connected to the MCU central processing unit 4 through a wire to provide power to the MCU central processing unit 4; and the 3.8V terminal of the power module 8 is electrically connected to the 4G communication module 7 through a wire to provide power to the 4G communication module 7.

[0064] The MCU central processing unit 4 is connected to the clock module 5 via wires, enabling data transmission between the MCU central processing unit 4 and the clock module 5; the MCU central processing unit 4 is connected to the AD sampling module 6 via wires, enabling the AD sampling module 6 to transmit data to the MCU central processing unit 4; the MCU central processing unit 4 is connected to the 4G communication module 7 via wires, enabling data transmission between the MCU central processing unit 4 and the 4G communication module 7; the MCU central processing unit 4 is connected to the storage module 9 via wires, enabling data transmission between the MCU central processing unit 4 and the storage module 9; the MCU central processing unit 4 is connected to the motor drive module 10 via wires, enabling the MCU central processing unit 4 to transmit data to the motor drive module 10; the MCU central processing unit 4 is connected to the display unit 11 via wires, enabling the MCU central processing unit 4 to transmit data to the display unit 11; the AD sampling module 6 is electrically connected to the three-phase miniature circuit breaker 1 via wires, and the AD sampling module 6 collects the operating status signal of the miniature circuit breaker 1.

[0065] The power module 8, 4G communication module 7, storage module 9, motor drive module 10, display unit 11, and clock module 5 are all the same as those in Embodiment 1.

[0066] When used on a three-phase miniature circuit breaker 1, the corresponding AD sampling module 6 is as follows: Figure 12As shown, the resistors are: current transformer CT2 (number 2), current transformer CT3 (number 3), current transformer CT4 (number 4), resistors R20 (number 20), R21 (number 21), R22 (number 22), R23 (number 23), R24 (number 24), R25 (number 25), R26 (number 26), R27 (number 27), R28 (number 28), R29 (number 29), R30 (number 30), and R31 (number 31). Resistor #2 R32, Resistor #33 R33, Resistor #34 R34, Resistor #35 R35, Resistor #36 R36, Resistor #37 R37, Resistor #38 R38, Resistor #39 R39, Resistor #40, Resistor #41, Resistor #42, Resistor #43, Resistor #44, Resistor #45, Resistor #46, Resistor #47, Resistor #4... Resistor #18 R48, Resistor #49 R49, Resistor #50 R50, Resistor #51 R51, Resistor #52 R52, Capacitor #17 C17, Capacitor #18 C18, Capacitor #19 C19, Capacitor #20 C20, Capacitor #21 C21, Capacitor #22 C22, Capacitor #23 C23, Capacitor #24 C24, Capacitor #25 C25, Capacitor #26 C26, Capacitor #27 C27, Capacitor #28 The system consists of capacitors C28, C29, C30, C31, C32, C33, C34, C35, C36, C37, C38, C39, crystal oscillator CY3, and chip U11. Chip U11 is an RN8302 type chip.

[0067] The coil of current transformer CT2 is connected to the power supply line of the L1 terminal of the three-phase miniature circuit breaker 1; the coil of current transformer CT3 is connected to the power supply line of the L2 terminal of the three-phase miniature circuit breaker 1; the coil of current transformer CT4 is connected to the power supply line of the L3 terminal of the three-phase miniature circuit breaker 1; and the N terminal of the three-phase miniature circuit breaker 1 is connected to the analog signal ground.

[0068] The positive output terminal of current transformer CT2 is electrically connected to pin 4 of chip U11 via resistor R20 (number 20). The negative output terminal of current transformer CT2 is electrically connected to pin 5 of chip U11 via resistor R22 (number 22). The negative output terminal of current transformer CT2 is connected to analog signal ground. Pin 4 of chip U11 is connected to analog signal ground via capacitor C31 (number 31). Pin 5 of chip U11 is connected to analog signal ground via capacitor C32 (number 32). The positive output terminal of current transformer CT2 is connected to analog signal ground via resistor R21 (number 21). Resistors R29 and R30... One end of resistors R30, R31, R32, and R33 connected in series is connected to the L1 terminal of the three-phase miniature circuit breaker 1, and the other end is connected to pin 12 of chip U11. Pin 12 of chip U11 is connected to analog signal ground through capacitor C25. Pin 13 of chip U11 is connected to analog signal ground through capacitor C26. Pin 13 of chip U11 is connected to analog signal ground through resistor R35. The connection end of resistors R32 and R33 is connected to analog signal ground through resistor R34.

[0069] The positive output terminal of current transformer CT3 (number 3) is electrically connected to pin 7 of chip U11 (number 11) via resistor R23 (number 23). The negative output terminal of current transformer CT3 is electrically connected to pin 8 of chip U11 (number 11) via resistor R25 (number 25). The negative output terminal of current transformer CT3 is connected to analog signal ground. Pin 7 of chip U11 (number 11) is connected to analog signal ground via capacitor C33 (number 33). Pin 8 of chip U11 (number 11) is connected to analog signal ground via capacitor C34 (number 34). The positive output terminal of current transformer CT3 (number 3) is connected to analog signal ground via resistor R24 ​​(number 24). Resistor R36 (number 36) and resistor R25 (number 37) are also connected to analog signal ground. One end of the series connection of resistors R37 (17), R38 (38), R39 (39), and R40 (40) is connected to the L2 terminal of the three-phase miniature circuit breaker 1, and the other end is connected to pin 14 of chip U11 (111). Pin 14 of chip U11 is connected to analog signal ground through capacitor C27 (27). Pin 15 of chip U11 is connected to analog signal ground through capacitor C28 (28). Pin 15 of chip U11 is connected to analog signal ground through resistor R42 (42). The connection point of resistors R39 (39) and R40 (40) is connected to analog signal ground through resistor R41 (41).

[0070] The positive output terminal of current transformer CT4 (number 4) is electrically connected to pin 10 of chip U11 (number 11) via resistor R26 (number 26). The negative output terminal of current transformer CT4 is electrically connected to pin 11 of chip U11 (number 11) via resistor R28 (number 28). The negative output terminal of current transformer CT4 is connected to analog signal ground. Pin 10 of chip U11 (number 11) is connected to analog signal ground via capacitor C35 (number 35). Pin 11 of chip U11 (number 11) is connected to analog signal ground via capacitor C36 (number 36). The positive output terminal of current transformer CT4 (number 4) is connected to analog signal ground via resistor R27 (number 27). Resistor R43 (number 43) is also connected to analog signal ground. One end of resistors R44 (44), R45 (45), R46 (46), and R47 (47) connected in series is connected to terminal L3 of the three-phase miniature circuit breaker 1, and the other end is connected to pin 16 of chip U11 (111). Pin 16 of chip U11 is connected to analog signal ground through capacitor C29 (29). Pin 17 of chip U11 is connected to analog signal ground through capacitor C30 (30). Pin 17 of chip U11 is connected to analog signal ground through resistor R49 (49). The connection point of resistors R46 (46) and R47 (47) is connected to analog signal ground through resistor R48 (48).

[0071] Pin 9 of chip U11 is electrically connected to the 3.3V terminal of power module 8 through resistor R50. Pin 9 of chip U11 is connected to analog signal ground through capacitor C19. Pin 9 of chip U11 is connected to the positive terminal of capacitor C20. The negative terminal of capacitor C20 is connected to analog signal ground. The 3.3V terminal of power module 8 is connected to digital signal ground through capacitor C17. The 3.3V terminal of power module 8 is connected to the positive terminal of capacitor C18. The negative terminal of capacitor C18 is connected to digital signal ground.

[0072] Pin 3 of chip U11 is connected to analog signal ground via capacitor C21 (number 21). Pin 3 of chip U11 is connected to the positive terminal of capacitor C22 (number 22), and the negative terminal of capacitor C22 is connected to analog signal ground. Pin 38 of chip U11 is connected to digital signal ground via capacitor C23 (number 23). Pin 38 of chip U11 is connected to the positive terminal of capacitor C24 (number 24), and the negative terminal of capacitor C24 is connected to digital signal ground. One end of resistor R51 (number 51) is connected to digital signal ground, and the other end is connected to analog signal ground.

[0073] Pin 6 of chip U11 is connected to analog signal ground; pins 44, 43, 42, and 39 are connected to digital signal ground; pins 41 and 40 are electrically connected to the 3.3V terminal of power module 8; pin 37 is connected to digital signal ground via capacitor C37; pin 36 is connected to digital signal ground via capacitor C38; pin 37 is electrically connected to pin 36 via resistor R52; pin 37 is electrically connected to pin 36 via crystal oscillator CY3; pin 28 is electrically connected to the 3.3V terminal of power module 8; pin 29 is connected to digital signal ground; pin 28 is electrically connected to pin 29 via capacitor C39; pins 20 and 21 are connected to analog signal ground.

[0074] When used on a three-phase miniature circuit breaker 1, the corresponding MCU central processing unit 4 is as follows: Figure 13 As shown, the system consists of resistors R53 (number 53), R54 (number 54), R55 (number 55), R56 (number 56), capacitors C40 (number 40), C41 (number 41), C42 (number 42), C43 (number 43), C44 (number 44), C45 (number 45), crystal oscillator CY4, and chip U12 (number 12). Chip U12 is an FM33LE016 type chip. Pin 1 of chip U12 is connected to digital signal ground via capacitor C40, and pin 1 of chip U12 is electrically connected to the 3.3V terminal of power module 8 via resistor R53 (number 53). Pins 34 and 52 of chip U12 are connected to the 3.3V terminal of power module 8. Pin 33 is connected to digital signal ground; pin 54 of chip U12 is electrically connected to the 3.3V terminal of power module 8 through resistor R55; pin 54 is also electrically connected to digital signal ground through resistor R54, capacitor C41, and capacitor C42; pins 53 and 51 of chip U12 are connected to digital signal ground; pin 49 is connected to digital signal ground through capacitor C44; pin 48 is connected to digital signal ground through capacitor C45; one end of resistor R56 and capacitor C43 connected in series is electrically connected to digital signal ground, and the other end is electrically connected to pin 50 of chip U12; pin 49 is electrically connected to pin 48 through crystal oscillator CY4.

[0075] Pin 2 of chip U12 is electrically connected to pin 17 of chip U4 in 4G communication module 7; pin 3 of chip U12 is electrically connected to pin 18 of chip U4 in 4G communication module 7; pin 12 of chip U12 is electrically connected to pin 5 of chip U5 in storage module 9; pin 11 of chip U12 is electrically connected to pin 6 of chip U5; pin 10 of chip U12 is electrically connected to pin 7 of chip U5; pin 61 of chip U12 is electrically connected to pin 6 of chip U6 in motor drive module 10; pin 60 of chip U12 is electrically connected to pin 7 of chip U6; pin 32 of chip U12 is electrically connected to pin 5 of chip U7 in display unit 11; chip U12... Pin 31 of chip 2 is electrically connected to pin 4 of chip 7 (U7); pin 30 of chip 12 is electrically connected to pin 3 of chip 7 (U7); pin 17 of chip 12 is electrically connected to pin 7 of chip 8 (U8) in clock module 5; pin 18 of chip 12 is electrically connected to pin 6 of chip 8 (U8); pin 19 of chip 12 is electrically connected to pin 5 of chip 8 (U8); pin 26 of chip 12 is electrically connected to pin 34 of chip 11 (U11) in AD sampling module 6; pin 27 of chip 12 is electrically connected to pin 33 of chip 11 (U11); pin 28 of chip 12 is electrically connected to pin 32 of chip 11 (U11); pin 29 of chip 12 is electrically connected to pin 35 of chip 11 (U11).

[0076] In this invention, the power supply module 8 draws AC power from the input terminal of the three-phase miniature circuit breaker 1 and converts it into three DC power supplies: DC 12V, DC 3.8V, and DC 3.3V, through an AC-DC conversion circuit. These power supplies power the MCU central processing unit 4, the 4G communication module 7, and the motor drive module 10. The 4G communication module 7 is a 4G-CAT1 communication module. The corresponding AD sampling module 6 collects analog electrical parameters of the three-phase miniature circuit breaker 1 and converts them into digital signals for power measurement. The data is then transmitted to the MCU central processing unit 4 via the SPI bus. The MCU central processing unit 4 exchanges data with the storage module 9 through the IIC communication interface. The measured electrical energy data is stored to ensure data reliability. The MCU central processing unit 4 displays the measured electrical parameters through the display unit 11. The MCU central processing unit 4 is connected to the 4G communication module 7 through the UART communication interface to realize remote data transmission and control. The electrical parameters are uploaded to the platform in real time and then forwarded to the user through the platform, so that the user can remotely check the power consumption. The user can also send control signals to the MCU central processing unit 4 in this way. The MCU central processing unit 4 controls the motor drive module 10 according to the instructions to perform corresponding action control on the three-phase miniature circuit breaker 1, thereby realizing the purpose of remote reclosing operation of the miniature circuit breaker 1.

Claims

1. A remote reclosing control device for energy metering and transmission in a miniature circuit breaker, comprising a housing (12), a display screen (3), a motor (2), an output shaft (14), a motor drive gear (15), a transmission gear set (16), an output drive gear (17), and a circuit board; the housing (12) is fixed to the side wall of the miniature circuit breaker (1) by bolts, and the display screen (3) is fixedly mounted on the front panel of the housing (12), the motor (2), the output shaft (14), the motor drive gear (15), the transmission gear set (16), the output drive gear (17), and a circuit board; the housing (12) is fixedly mounted to the side wall of the miniature circuit breaker (1) by bolts, and the display screen (3) is fixedly mounted on the front panel of the housing (12), the motor (2), the output shaft (14), the output drive gear (15), the transmission gear set (16), the output drive gear (17), and a circuit board. The speed gear set (16), the output drive gear (17) and the circuit board are all located inside the cavity of the housing (12); the motor (2) is electrically connected to the motor drive module (10) through a wire; the display screen (3) is electrically connected to the display unit (11) through a wire; the output drive gear (17) is fixedly provided at the inner end of the output shaft (14), and the outer end of the output shaft (14) passes through the side wall of the housing (12) and the miniature circuit breaker (1) and is fixedly connected to the rotating shaft of the opening and closing mechanism inside the cavity of the miniature circuit breaker (1); Its features are: The motor (2) is fixedly provided with a motor drive gear (15) on its rotating shaft. The motor drive gear (15) is meshed with the speed change gear set (16) for transmission. The speed change gear set (16) is meshed with the output drive gear (17) for transmission. The housing (12) has a wire hole (13) on its side wall; the circuit board has an MCU central processing unit (4), a clock module (5), an AD sampling module (6), a 4G communication module (7), a power module (8), a storage module (9), a motor drive module (10), and a display unit (11). The power wire of the power module (8) passes through the wire hole (13) and is electrically connected to the L terminal and N terminal of the miniature circuit breaker (1), respectively. The 12V terminal of the power module (8) is electrically connected to the motor drive module (10) through a wire, the 3.3V terminal of the power module (8) is electrically connected to the MCU central processing unit (4) through a wire, and the 3.8V terminal of the power module (8) is electrically connected to the 4G communication module (7) through a wire. The MCU central processing unit (4) is connected to the clock module (5) via a wire; the MCU central processing unit (4) is connected to the AD sampling module (6) via a wire; the MCU central processing unit (4) is connected to the 4G communication module (7) via a wire; the MCU central processing unit (4) is connected to the storage module (9) via a wire; the MCU central processing unit (4) is connected to the motor drive module (10) via a wire; the MCU central processing unit (4) is connected to the display unit (11) via a wire; the AD sampling module (6) is electrically connected to the miniature circuit breaker (1) via a wire, and the working status signal of the miniature circuit breaker (1) is collected through the AD sampling module (6).

2. The remote reclosing control device for energy metering of a miniature circuit breaker according to claim 1, characterized in that: The power module (8) consists of resistors R1, R2, R3, R4, R5, R6, R7, and R8; capacitors C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, and C11; common-mode inductors L1, L2, L3, L4, L5, and L5; and diodes L1, L2, L3, L4, L5, and L5. The circuit consists of diodes D1, D2, D3, D4, U1, U2, and U3; U1 is a PN8039 type chip, U2 is a TPS54302DDCR type chip, and U3 is an HT7333 type chip; the L signal input terminal of the common-mode inductor L1 is connected to the L terminal of the miniature circuit breaker (1) through resistor R1, and the N signal input terminal of the common-mode inductor L1 is connected to the N terminal of the miniature circuit breaker (1); one end of the resistor R2 connected in parallel with capacitor C1 is connected to the common-mode inductor L1. The L signal input terminal of inductor (L1) is electrically connected, and the other end is electrically connected to the N signal input terminal of common-mode inductor (L1). The N signal output terminal of common-mode inductor (L1) is connected to digital signal ground through inductor (L3). The L signal output terminal of common-mode inductor (L1) is connected to the positive terminal of diode (D1). The negative terminal of diode (D1) is connected to the positive terminal of diode (D2). The negative terminal of diode (D2) is connected to the positive terminal of capacitor (C2) through inductor (L2). The negative terminal of capacitor (C2) is connected to digital signal ground. Pins 5, 6, 7, and 8 of chip (U1) are all electrically connected to the positive terminal of capacitor (C2). Pins 1 and 2 are both electrically connected to the negative terminal of diode 4 (D4). Pin 2 is electrically connected to pin 4 through capacitor 3 (C3), and pin 4 is electrically connected to the negative terminal of diode 3 (D3). The positive terminal of diode 4 (D4) is connected to digital signal ground. The positive terminal of diode 3 (D3) is electrically connected to the 12V terminal, the positive terminal of capacitor 4 (C4), and pin 3 of chip 2 (U2). The positive terminal of diode 3 (D3) is electrically connected to the negative terminal of diode 4 (D4) through inductor 4 (L4), and the negative terminal of capacitor 4 (C4) is connected to digital signal ground. One end of resistor 3 (R3) and capacitor 5 (C5) connected in parallel is connected to the 12V terminal, and the other end is connected to digital signal ground. Pin 3 of chip 2 (U2) is electrically connected to pin 5 through resistor 5 (R5). Pin 5 is connected to digital signal ground through resistor 4 (R4). Pin 1 is connected to digital signal ground. Pin 6 is connected to pin 2 through capacitor 6 (C6). Pin 4 is connected to digital signal ground through resistor 8 (R8). Pin 2 is electrically connected to pin 2 of chip 3 (U3) through inductor 5 (L5). The third pin of the aforementioned chip (U3) is connected to the 3.3V terminal and the positive terminal of capacitor 11 (C11). The negative terminal of capacitor 11 (C11) is connected to the digital signal ground. The first pin is connected to the digital signal ground, and the second pin is connected to the 3.8V terminal. One end of the parallel connection of resistor 7 (R7) and capacitor 7 (C7) is electrically connected to the second pin of chip (U3) through resistor 6 (R6), and the other end is connected to the digital signal ground through resistor 8 (R8). The second pin of chip (U3) is connected to the positive terminal of capacitor 9 (C9), and the negative terminal of capacitor 9 (C9) is connected to the digital signal ground. One end of the parallel connection of capacitor 8 (C8) and capacitor 10 (C10) is electrically connected to the second pin of chip (U3), and the other end is connected to the digital signal ground. The 4G communication module (7) is composed of a fourth chip (U4). The fourth chip (U4) is an ML307A type chip. The first and tenth pins of the fourth chip (U4) are connected to the digital signal ground, the fourth and fourth pins are electrically connected to the 3.8V terminal of the power supply module (8), and the third pin is connected to the antenna. The storage module (9) is composed of chip 5 (U5). The chip 5 (U5) is an FM24CL04 chip. Pins 1, 2, 3 and 4 of chip 5 (U5) are connected to digital signal ground, and pin 8 is electrically connected to the 3.3V terminal of the power module (8). The motor drive module (10) is composed of chip 6 (U6). Chip 6 (U6) is an L9110S type chip. Pin 1 and pin 4 of chip 6 (U6) are electrically connected to the terminals of motor (2), pin 2 and pin 3 are electrically connected to the 12V terminals of power module (8), and pin 8 and pin 5 are connected to digital signal ground. The display unit (11) is composed of chip 7 (U7) and resistor 9 (R9). The chip 7 (U7) is a VK1088B type chip. The 8th pin of the chip 7 (U7) is electrically connected to the 3.3V terminal of the power module (8), and the 7th pin is electrically connected to the 3.3V terminal of the power module (8) through resistor 9 (R9). The clock module (5) consists of chip 8 (U8), crystal oscillator 1 (CY1), diode 5 (D5), and battery (BAT). Chip 8 (U8) is a DS1302 chip. Pin 1 of chip 8 (U8) is electrically connected to the 3.3V terminal of the power module (8). Pin 2 is electrically connected to pin 3 through crystal oscillator 1 (CY1). Pin 4 is connected to digital signal ground. Pin 8 is connected to the negative terminal of diode 5 (D5). The positive terminal of diode 5 (D5) is connected to the positive terminal of battery (BAT). The negative terminal of battery (BAT) is connected to digital signal ground.

3. The remote reclosing control device for energy metering of a miniature circuit breaker according to claim 2, characterized in that: When used on a single-phase miniature circuit breaker (1), the corresponding AD sampling module (6) consists of a current transformer (CT1), resistors 10 (R10), 11 (R11), 12 (R12), 13 (R13), 14 (R14), 15 (R15), 16 (R16), 17 (R17), 18 (R18), capacitors 12 (C12), 13 (C13), and 10... The circuit consists of capacitor C14 (number 4), capacitor C15 (number 15), and chip U9 (number 9), wherein chip U9 is a BL0942 type chip; the coil of current transformer CT1 is connected to the power supply line of the L terminal of a single-phase miniature circuit breaker (1); the positive output terminal of current transformer CT1 is electrically connected to pin 2 of chip U9 through resistor R11 (number 11); and the negative output terminal of current transformer CT1 is connected to chip U9 through resistor R12 (number 12). 9) is electrically connected to pin 3. The positive output terminal of current transformer 1 (CT1) is electrically connected to the negative output terminal of current transformer 1 (CT1) through resistor 10 (R10). One end of resistors 13 (R13), 14 (R14), 15 (R15), 16 (R16), and 17 (R17) connected in series is connected to the N terminal of a single-phase miniature circuit breaker (1), and the other end is connected to pin 4 of chip 9 (U9). Pin 1 of chip 9 (U9) is connected to The 3.3V terminal of the power module (8) is electrically connected. Pin 1 is connected to digital signal ground through capacitor No. 14 (C14), pin 2 is connected to digital signal ground through capacitor No. 12 (C12), pin 3 is connected to digital signal ground through capacitor No. 13 (C13), pin 4 is connected to digital signal ground through capacitor No. 15 (C15), pin 4 is connected to digital signal ground through resistor No. 18 (R18), pin 5 is connected to digital signal ground, and pin 7 is electrically connected to the 3.3V terminal of the power module (8). When used on a single-phase miniature circuit breaker (1), the corresponding MCU central processing unit (4) consists of a second crystal oscillator (CY2), a sixteenth capacitor (C16), a nineteenth resistor (R19), and a tenth chip (U10). The tenth chip (U10) is an HT5017 type chip. Pin 48 of the tenth chip (U10) is connected to the digital signal ground through the sixteenth capacitor (C16), and pin 48 is electrically connected to the 3.3V terminal of the power supply module (8) through the nineteenth resistor (R19). Pin 60 is electrically connected to the 3.3V terminal of the power supply module (8), and pin 62 is electrically connected to the 3.3V terminal of the power supply module (8). Pin 64 is connected to digital signal ground, and pin 64 is electrically connected to pin 1 via crystal oscillator CY2; pin 36 of chip 10 (U10) is electrically connected to pin 17 of chip 4 (U4) in 4G communication module (7), and pin 35 of chip 10 (U10) is electrically connected to pin 18 of chip 4 (U4) in 4G communication module (7); pin 37 of chip 10 (U10) is electrically connected to pin 5 of chip 5 (U5) in storage module (9), and pin 38 of chip 10 (U10) is electrically connected to pin 6 of chip 5 (U5), and pin 39 of chip 10 (U10) is electrically connected to pin 17 of chip 4 (U4) in 4G communication module (7). The pin is electrically connected to pin 7 of chip 5 (U5); pin 46 of chip 10 (U10) is electrically connected to pin 6 of chip 6 (U6) in the motor drive module (10), and pin 47 of chip 10 (U10) is electrically connected to pin 7 of chip 6 (U6); pin 2 of chip 10 (U10) is electrically connected to pin 5 of chip 7 (U7) in the display unit (11), pin 3 of chip 10 (U10) is electrically connected to pin 4 of chip 7 (U7), and pin 4 of chip 10 (U10) is electrically connected to pin 3 of chip 7 (U7); pin 10 (U1) is electrically connected to pin 7 of chip 7 (U7); Pin 20 of chip 0 is electrically connected to pin 7 of chip 8 (U8) in clock module (5), pin 21 of chip 10 (U10) is electrically connected to pin 6 of chip 8 (U8), pin 22 of chip 10 (U10) is electrically connected to pin 5 of chip 8 (U8); pin 17 of chip 10 (U10) is electrically connected to pin 10 of chip 9 (U9) in AD sampling module (6), pin 18 of chip 10 (U10) is electrically connected to pin 9 of chip 9 (U9), and pin 19 of chip 10 (U10) is electrically connected to pin 8 of chip 9 (U9).

4. The remote reclosing control device for energy metering of a miniature circuit breaker according to claim 2, characterized in that: When used on a three-phase miniature circuit breaker (1), the corresponding AD sampling module (6) consists of current transformer No. 2 (CT2), current transformer No. 3 (CT3), current transformer No. 4 (CT4), resistor No. 20 (R20), resistor No. 21 (R21), resistor No. 22 (R22), resistor No. 23 (R23), resistor No. 24 (R24), resistor No. 25 (R25), resistor No. 26 (R26), resistor No. 27 (R27), resistor No. 28 (R28), and resistor No. 29 (R29). Resistors #30 (R30), #31 (R31), #32 (R32), #33 (R33), #34 (R34), #35 (R35), #36 (R36), #37 (R37), #38 (R38), #39 (R39), #40 (R40), #41 (R41), #42 (R42), #43 (R43), #44 (R44), #45 (R45), #46 (R46) Resistors R46, R47, R48, R49, R50, R51, R52, C17, C18, C19, C20, C21, C22, C23, C24, C25, C26, and C27 are listed. It consists of capacitors C27, C28, C29, C30, C31, C32, C33, C34, C35, C36, C37, C38, C39, crystal oscillator CY3, and chip U11. The chip U11 is an RN8302 type chip. The coil of current transformer No. 2 (CT2) is connected to the power supply line of the L1 terminal of the three-phase miniature circuit breaker (1), the coil of current transformer No. 3 (CT3) is connected to the power supply line of the L2 terminal of the three-phase miniature circuit breaker (1), the coil of current transformer No. 4 (CT4) is connected to the power supply line of the L3 terminal of the three-phase miniature circuit breaker (1), and the N terminal of the three-phase miniature circuit breaker (1) is connected to the analog signal ground. The positive output terminal of current transformer CT2 is electrically connected to pin 4 of chip 11 (U11) via resistor 20 (R20). The negative output terminal of current transformer CT2 is electrically connected to pin 5 of chip 11 (U11) via resistor 22 (R22). The negative output terminal of current transformer CT2 is connected to analog signal ground. Pin 4 of chip 11 (U11) is connected to analog signal ground via capacitor 31 (C31). Pin 5 of chip 11 (U11) is connected to analog signal ground via capacitor 32 (C32). The positive output terminal of current transformer CT2 is connected to analog signal ground via resistor 21 (R21). Resistors 29 (R29) and 30 (R20) are also connected to analog signal ground. One end of the series connection of resistors (R30), (R31), (R32), and (R33) is connected to the L1 terminal of the three-phase miniature circuit breaker (1), and the other end is connected to pin 12 of chip 11 (U11). Pin 12 of chip 11 (U11) is connected to analog signal ground through capacitor 25 (C25). Pin 13 of chip 11 (U11) is connected to analog signal ground through capacitor 26 (C26). Pin 13 of chip 11 (U11) is connected to analog signal ground through resistor 35 (R35). The connection end of resistors (R32) and (R33) is connected to analog signal ground through resistor 34 (R34). The positive output terminal of current transformer CT3 is electrically connected to pin 7 of chip 11 (U11) via resistor R23 (23). The negative output terminal of current transformer CT3 is electrically connected to pin 8 of chip 11 (U11) via resistor R25 (25). The negative output terminal of current transformer CT3 is connected to analog signal ground. Pin 7 of chip 11 (U11) is connected to analog signal ground via capacitor C33 (33). Pin 8 of chip 11 (U11) is connected to analog signal ground via capacitor C34 (34). The positive output terminal of current transformer CT3 is connected to analog signal ground via resistor R24 ​​(24). Resistors R36 (36) and R37 (38) are also connected to analog signal ground. One end of the series connection of resistors 7 (R37), 38 (R38), 39 (R39), and 40 (R40) is connected to the L2 terminal of the three-phase miniature circuit breaker (1), and the other end is connected to pin 14 of chip 11 (U11). Pin 14 of chip 11 (U11) is connected to analog signal ground through capacitor 27 (C27). Pin 15 of chip 11 (U11) is connected to analog signal ground through capacitor 28 (C28). Pin 15 of chip 11 (U11) is connected to analog signal ground through resistor 42 (R42). The connection end of resistors 39 (R39) and 40 (R40) is connected to analog signal ground through resistor 41 (R41). The positive output terminal of current transformer CT4 is electrically connected to pin 10 of chip 11 (U11) via resistor R26 (26). The negative output terminal of current transformer CT4 is electrically connected to pin 11 of chip 11 (U11) via resistor R28 (28). The negative output terminal of current transformer CT4 is connected to analog signal ground. Pin 10 of chip 11 (U11) is connected to analog signal ground via capacitor C35 (35). Pin 11 of chip 11 (U11) is connected to analog signal ground via capacitor C36 (36). The positive output terminal of current transformer CT4 is connected to analog signal ground via resistor R27 (27) and resistor R43 (43). One end of resistors 44 (R44), 45 (R45), 46 (R46), and 47 (R47) connected in series is connected to the L3 terminal of a three-phase miniature circuit breaker (1), and the other end is connected to pin 16 of chip 11 (U11). Pin 16 of chip 11 (U11) is connected to analog signal ground through capacitor 29 (C29). Pin 17 of chip 11 (U11) is connected to analog signal ground through capacitor 30 (C30). Pin 17 of chip 11 (U11) is connected to analog signal ground through resistor 49 (R49). The connection end of resistors 46 (R46) and 47 (R47) is connected to analog signal ground through resistor 48 (R48). Pin 9 of chip 11 (U11) is electrically connected to the 3.3V terminal of power module (8) through resistor R50. Pin 9 of chip 11 (U11) is connected to analog signal ground through capacitor C19. Pin 9 of chip 11 (U11) is connected to the positive terminal of capacitor C20. The negative terminal of capacitor C20 is connected to analog signal ground. The 3.3V terminal of power module (8) is connected to digital signal ground through capacitor C17. The 3.3V terminal of power module (8) is connected to the positive terminal of capacitor C18. The negative terminal of capacitor C18 is connected to digital signal ground. Pin 3 of chip 11 (U11) is connected to analog signal ground via capacitor 21 (C21). Pin 3 of chip 11 (U11) is connected to the positive terminal of capacitor 22 (C22), and the negative terminal of capacitor 22 (C22) is connected to analog signal ground. Pin 38 of chip 11 (U11) is connected to digital signal ground via capacitor 23 (C23). Pin 38 of chip 11 (U11) is connected to the positive terminal of capacitor 24 (C24), and the negative terminal of capacitor 24 (C24) is connected to digital signal ground. One end of resistor 51 (R51) is connected to digital signal ground, and the other end is connected to analog signal ground. Pin 6 of chip 11 (U11) is connected to analog signal ground; pins 44, 43, 42 and 39 are connected to digital signal ground; pins 41 and 40 are electrically connected to the 3.3V terminal of power module (8); pin 37 is connected to digital signal ground via capacitor C37; pin 36 is connected to digital signal ground via capacitor C38; pin 37 is electrically connected to pin 36 via resistor R52; pin 37 is electrically connected to pin 36 via crystal oscillator CY3; pin 28 is electrically connected to the 3.3V terminal of power module (8); pin 29 is connected to digital signal ground; pin 28 is electrically connected to pin 29 via capacitor C39; pins 20 and 21 are connected to analog signal ground. When used on a three-phase miniature circuit breaker (1), the corresponding MCU central processing unit (4) is composed of resistors R53, R54, R55, R56, capacitors C40, C41, C42, C43, C44, C45, crystal oscillator CY4, and chip U12. The chip U12 is an FM33LE016 type chip. The first pin of chip U12 is connected to the digital signal ground through capacitor C40, and the first pin of chip U12 is electrically connected to the 3.3V terminal of the power module (8) through resistor R53. The 34th pin of chip U12 is connected to the digital signal ground through capacitor C40. Pin 52 is connected to the 3.3V terminal of the power module (8), and pin 33 is connected to the digital signal ground; pin 54 of chip 12 (U12) is electrically connected to the 3.3V terminal of the power module (8) through resistor 55 (R55), and pin 54 is electrically connected to the digital signal ground through resistor 54 (R54), capacitor 41 (C41), and capacitor 42 (C42); pins 53 and 51 of chip 12 (U12) are connected to the digital signal ground, pin 49 is connected to the digital signal ground through capacitor 44 (C44), and pin 48 is connected to the digital signal ground through capacitor 45 (C45); one end of resistor 56 (R56) and capacitor 43 (C43) connected in series is electrically connected to the digital signal ground, and the other end is electrically connected to pin 50 of chip 12 (U12); pin 49 is electrically connected to pin 48 through crystal oscillator 4 (CY4); Pin 2 of chip 12 (U12) is electrically connected to pin 17 of chip 4 (U4) in the 4G communication module (7); pin 3 of chip 12 (U12) is electrically connected to pin 18 of chip 4 (U4) in the 4G communication module (7); pin 12 of chip 12 (U12) is electrically connected to pin 5 of chip 5 (U5) in the storage module (9); and pin 11 of chip 12 (U12) is electrically connected to pin 6 of chip 5 (U5). Then, pin 10 of chip 12 (U12) is electrically connected to pin 7 of chip 5 (U5); pin 61 of chip 12 (U12) is electrically connected to pin 6 of chip 6 (U6) in motor drive module (10); pin 60 of chip 12 (U12) is electrically connected to pin 7 of chip 6 (U6); pin 32 of chip 12 (U12) is electrically connected to pin 5 of chip 7 (U7) in display unit (11); chip 12 (U12) Pin 31 of chip U12 is electrically connected to pin 4 of chip 7 (U7), and pin 30 of chip U12 is electrically connected to pin 3 of chip 7 (U7); pin 17 of chip U12 is electrically connected to pin 7 of chip 8 (U8) in clock module (5), pin 18 of chip U12 is electrically connected to pin 6 of chip 8 (U8), and pin 19 of chip U12 is electrically connected to pin 3 of chip 8 (U8).

5. The 26th pin of chip 12 (U12) is electrically connected to the 34th pin of chip 11 (U11) in the AD sampling module (6), the 27th pin of chip 12 (U12) is electrically connected to the 33rd pin of chip 11 (U11), the 28th pin of chip 12 (U12) is electrically connected to the 32nd pin of chip 11 (U11), and the 29th pin of chip 12 (U12) is electrically connected to the 35th pin of chip 11 (U11).

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