Data acquisition protection device of intelligent circuit breaker and control method and equipment thereof

Abstract

The application relates to a data acquisition protection device of an intelligent circuit breaker, a control method and equipment thereof, the device comprising a first control module, a second control module, a data acquisition module and a hardware protection module, the first control module being bidirectionally communicated with the second control module, the data acquisition module being connected with the second control module and the hardware protection module respectively, and the hardware protection module being further used for being connected with a tripping unit of the intelligent circuit breaker. The first control module and the second control module of the device realize the working mode of double microprocessors, the two processors play the role of mutual working and mutual supervision, and the reliability of the whole intelligent circuit breaker operation is greatly increased; no matter whether the control module program is normally operated or not, the hardware protection module is used for implementing tripping protection, the last safety guarantee is provided for the intelligent circuit breaker, the use safety risk of the intelligent circuit breaker is reduced to the minimum, and the problem that the existing intelligent circuit breaker adopts microprocessors for data acquisition and tripping protection and the reliability is low is solved.

Description

Technical Field

[0001] This invention relates to the field of circuit breaker technology, and in particular to a data acquisition and protection device for an intelligent circuit breaker, as well as its control method and equipment. Background Technology

[0002] Circuit breakers evolved from traditional electrical switches and are common power distribution management devices. Circuit breakers can quickly disconnect power when a short circuit or overcurrent fault occurs in a power distribution network, preventing the fault from escalating. They can also be used as general switches to distribute and control electrical energy. Circuit breakers are the most important control components in power systems, and their intelligence is the foundation of intelligent devices and even smart grids. Building upon the traditional functions of controlling power lines and protecting electrical safety, intelligent circuit breakers incorporate electromagnetic, chip, fieldbus, and microprocessor technologies. Circuit breakers are gradually becoming intelligent, integrating control, metering, and communication functions through various sensor, microelectronic, and information transmission technologies. This allows them to better perform breaking tasks and improve breaking reliability, achieving intelligent operation.

[0003] However, existing smart circuit breakers have low reliability. Since the data acquisition and tripping protection of smart circuit breakers are implemented by microprocessors, if the microprocessor program fails, the data acquisition and tripping protection functions may fail, posing a significant safety hazard. Summary of the Invention

[0004] This invention provides a data acquisition and protection device for intelligent circuit breakers, as well as its control method and equipment, to solve the technical problem of low reliability in existing intelligent circuit breakers that use microprocessors for data acquisition and tripping protection.

[0005] To achieve the above objectives, the embodiments of the present invention provide the following technical solutions:

[0006] A data acquisition and protection device for an intelligent circuit breaker includes a first control module, a second control module, a data acquisition module, and a hardware protection module. The first control module and the second control module are bidirectionally connected. The data acquisition module is connected to both the second control module and the hardware protection module. The hardware protection module is also used to connect to the disconnection unit of the intelligent circuit breaker.

[0007] The data acquisition module is used to collect the three-phase voltage data and residual current data of the intelligent circuit breaker;

[0008] The second control module is used to control the intelligent circuit breaker to perform opening, closing, and fault protection operations based on the data collected by the data acquisition module.

[0009] The first control module is used to control the intelligent circuit breaker to perform opening, closing, fault protection operations, and control the operation of the indicator lights based on the data collected by the data acquisition module.

[0010] The hardware protection module is used to control the trip unit of the smart circuit breaker to operate according to the three-phase voltage data, so that the smart circuit breaker can achieve trip protection.

[0011] Preferably, the hardware protection module includes a half-wave precision rectifier submodule and a voltage comparison submodule connected to the half-wave precision rectifier submodule; the half-wave precision rectifier submodule is used to output a high-level voltage signal according to the voltage signal acquired by the data acquisition module; the voltage comparison submodule is used to output a high-level signal according to the comparison between the high-level voltage signal and a preset voltage, and control the tripping unit of the intelligent circuit breaker to operate through the high-level signal, so that the intelligent circuit breaker can achieve tripping protection.

[0012] Preferably, the half-wave precision rectifier submodule includes a first comparator connected to the data acquisition module and a semiconductor device connected to the output terminal of the first comparator, wherein the semiconductor device is connected to the voltage comparator submodule.

[0013] Preferably, the voltage comparison submodule includes a second comparator connected to the semiconductor device and a potentiometer connected to the negative input terminal of the second comparator, and the output terminal of the second comparator is connected to the disconnection unit of the smart circuit breaker.

[0014] Preferably, the data acquisition and protection device of the intelligent circuit breaker includes a communication module connected to the second control module, the communication module being used to enable data interaction between the second control module and the cloud platform.

[0015] Preferably, the data acquisition and protection device of the intelligent circuit breaker includes a power supply module for supplying power to the first control module, the second control module, the data acquisition module, and the hardware protection module.

[0016] The present invention also provides a control method for a data acquisition and protection device of an intelligent circuit breaker, applied to the data acquisition and protection device of the aforementioned intelligent circuit breaker, the control method comprising the following steps:

[0017] Acquire the three-phase voltage data and residual current data of the intelligent circuit breaker;

[0018] Based on the three-phase voltage data and the residual current data, the second control module controls the intelligent circuit breaker to perform opening, closing, and fault protection operations.

[0019] Based on the three-phase voltage data, the trip unit of the intelligent circuit breaker is controlled by the hardware protection module to enable the intelligent circuit breaker to perform trip protection.

[0020] Preferably, controlling the trip unit of the intelligent circuit breaker based on the three-phase voltage data and in conjunction with the hardware protection module includes: comparing the high-level voltage signal of the three-phase voltage data with a preset voltage to obtain a high-level signal, and controlling the trip unit of the intelligent circuit breaker to operate through the high-level signal so that the intelligent circuit breaker can achieve trip protection.

[0021] The present invention also provides a terminal device, including a processor and a memory;

[0022] The memory is used to store program code and transmit the program code to the processor;

[0023] The processor is used to execute the control method of the data acquisition and protection device of the intelligent circuit breaker as described above, according to the instructions in the program code.

[0024] As can be seen from the above technical solutions, the embodiments of the present invention have the following advantages: The data acquisition and protection device and its control method and equipment for the intelligent circuit breaker include a first control module, a second control module, a data acquisition module, and a hardware protection module. The first control module and the second control module are bidirectionally connected. The data acquisition module is connected to both the second control module and the hardware protection module. The hardware protection module is also used to connect to the disconnection unit of the intelligent circuit breaker. The first and second control modules of the data acquisition and protection device of the intelligent circuit breaker operate in a dual-microprocessor manner. The two processors work and supervise each other, which greatly increases the reliability of the entire intelligent circuit breaker operation. Regardless of whether the control module program is running normally, the trip protection is implemented through the hardware protection module, providing a final safety guarantee for the intelligent circuit breaker and minimizing the safety risks of using the intelligent circuit breaker. This solves the technical problem of low reliability in existing intelligent circuit breakers that use microprocessors for data acquisition and trip protection. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the data acquisition and protection device of the intelligent circuit breaker according to an embodiment of the present invention;

[0027] Figure 2 This is a circuit diagram of the hardware protection module in the data acquisition and protection device of the intelligent circuit breaker according to an embodiment of the present invention. Detailed Implementation

[0028] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0029] This application proposes a data acquisition and protection device for intelligent circuit breakers, as well as its control method and equipment, applicable to 0.4KV IoT distribution networks. It solves the technical problem of low reliability in existing intelligent circuit breakers that use microprocessors for data acquisition and tripping protection.

[0030] Example 1:

[0031] Figure 1 This is a schematic diagram of the data acquisition and protection device for the intelligent circuit breaker according to an embodiment of the present invention. Figure 2 This is a circuit diagram of the hardware protection module in the data acquisition and protection device of the intelligent circuit breaker according to an embodiment of the present invention.

[0032] like Figure 1 As shown, the present invention provides a data acquisition and protection device for an intelligent circuit breaker, including a first control module 10, a second control module 20, a data acquisition module 30, and a hardware protection module 40. The first control module 10 and the second control module 20 are bidirectionally connected. The data acquisition module 30 is connected to both the second control module 20 and the hardware protection module 40. The hardware protection module 40 is also used to connect to the disconnection unit of the intelligent circuit breaker.

[0033] In this embodiment of the invention, the data acquisition module 30 is used to acquire the three-phase voltage data and residual current data of the intelligent circuit breaker.

[0034] It should be noted that the data acquisition module 30 is responsible for collecting the three-phase voltage data (A / B / C) and residual current data flowing through the intelligent circuit breaker via voltage and current transformers. The data acquisition module 30 also converts the collected three-phase voltage and residual current data into corresponding voltage and current signals, which are then sent to the second control module 20, thereby achieving the effect of acquiring the three-phase voltage and residual current data of the intelligent circuit breaker. When an anomaly occurs in the three-phase voltage and residual current data (i.e., the three-phase voltage and residual current data reach the protection value), the second control module 20 outputs a trip signal to the trip unit, thus achieving the purpose of abnormal protection. When closing is required, the second control module 20 sends a closing signal to the closing unit, thereby controlling the intelligent circuit breaker to close. In this embodiment, the second control module 20 is also connected to the trip unit and the closing unit of the intelligent circuit breaker.

[0035] In this embodiment of the invention, the second control module 20 is used to control the intelligent circuit breaker to perform opening, closing, and fault protection operations based on the data collected by the data acquisition module 30. The first control module 10 is used to control the intelligent circuit breaker to perform opening, closing, and fault protection operations, as well as control the operation of the indicator lights, based on the data collected by the data acquisition module 30. The data collected by the data acquisition module 10 includes three-phase voltage data and residual current data.

[0036] It should be noted that the second control module 20 is responsible for the main control part of the data acquisition and protection device of the intelligent circuit breaker, including data acquisition of A / B / C three-phase current and voltage, residual current data acquisition, circuit breaker opening and closing control, fault diagnosis and protection, menu setting and LCD display, and data storage functions. It is the control core of the data acquisition and protection device of the intelligent circuit breaker. The first control module 10 is responsible for the function setting buttons and indicator light display, and the opening and closing buttons and indicator light display. It is the main carrier for realizing one-click function setting. The first control module 10 and the second control module 20 communicate via UART serial port. The first control module 10 is used to transmit user setting values ​​to the second control module 20, thereby realizing the one-click setting function. In this embodiment, the first control module 10 is also provided with function buttons and opening and closing buttons. The function buttons include: phase loss, overvoltage, undervoltage, 250A / 400A / 630A overcurrent protection, 100mA / 500mA / 1000mA leakage protection, function confirmation, etc. Each function button is equipped with an on / off indicator light. Each time the user presses a button, the corresponding "Entry" / "Exit" indicator light flashes, representing the function's pending entry / exit state. When the function is in the pending entry / exit state, pressing the confirmation button switches the flashing indicator light to a constant state, indicating that the function has been set and the setting value is sent to the second control module 20. The circuit breaker includes a closing button, an opening button, and corresponding closing / opening indicator lights. When the closing button is pressed, the intelligent circuit breaker initiates the closing function, and the closing indicator light illuminates; the same applies when the opening button is pressed. Both the first control module 10 and the second control module 20 can be microprocessors.

[0037] In this embodiment of the invention, the first control module 10 and the second control module 20 also periodically send heartbeat data to each other via a UART serial port to ensure that the first control module 10 and the second control module 20 can work normally.

[0038] It should be noted that the first control module 10 and the second control module 20 also need to periodically send heartbeat data to each other to indicate that the other is operating normally. If either party fails to send heartbeat data, the other party will control the reset pin of the other party to reset the program and achieve a restart. In this embodiment, the data acquisition and protection device of the intelligent circuit breaker operates in a dual-microprocessor manner through the first and second control modules. The two processors work and supervise each other. If one processor experiences a program malfunction, the other processor will detect the fault in time and force the other processor to reset and restart. This method greatly increases the reliability of the entire intelligent circuit breaker and basically eliminates the problem of protection function failure due to operational failure.

[0039] In this embodiment of the invention, the data acquisition and protection device of the intelligent circuit breaker includes an LCD display screen and a human-machine interface connected to the first control module. The combination of the LCD display screen and the human-machine interface enables more complex function settings, thereby improving the functions of the intelligent circuit breaker.

[0040] It should be noted that the data acquisition and protection device of this intelligent circuit breaker displays the function setting buttons and prominent function descriptions on the LCD screen and human-machine interface, which is clear at a glance and greatly simplifies the function setting process of the intelligent circuit breaker. This allows on-site personnel to set the intelligent circuit breaker without having to read relevant technical documents.

[0041] In this embodiment of the invention, the hardware protection module 40 is used to control the trip unit of the smart circuit breaker to operate according to the three-phase voltage data, so that the smart circuit breaker can achieve trip protection.

[0042] It should be noted that the data acquisition and protection device of the intelligent circuit breaker presets the protection threshold through the adjustable potentiometer of the hardware protection module 40. Once the operating current of the intelligent circuit breaker exceeds the set protection threshold, regardless of whether the control module program is running normally, this hardware circuit module will implement trip protection, providing a final safety guarantee for the intelligent circuit breaker and minimizing the safety risks of using the intelligent circuit breaker.

[0043] The present invention provides a data acquisition and protection device for an intelligent circuit breaker, comprising a first control module, a second control module, a data acquisition module, and a hardware protection module. The first control module and the second control module are bidirectionally connected. The data acquisition module is connected to both the second control module and the hardware protection module. The hardware protection module is also used to connect to the trip unit of the intelligent circuit breaker. The first and second control modules of this data acquisition and protection device operate in a dual-microprocessor manner. The two processors work and supervise each other, greatly increasing the reliability of the entire intelligent circuit breaker. Regardless of whether the control module program is running normally, trip protection is implemented through the hardware protection module, providing a final safety guarantee for the intelligent circuit breaker and minimizing the safety risks associated with its use. This solves the technical problem of low reliability in existing intelligent circuit breakers that use microprocessors for data acquisition and trip protection.

[0044] like Figure 2As shown, in one embodiment of the present invention, the hardware protection module 40 includes a half-wave precision rectifier submodule and a voltage comparator submodule connected to the half-wave precision rectifier submodule. The half-wave precision rectifier submodule is used to output a high-level voltage signal based on the voltage signal acquired by the data acquisition module 30. The voltage comparator submodule is used to output a high-level signal based on the comparison between the high-level voltage signal and a preset voltage, and controls the tripping unit of the intelligent circuit breaker to operate through the high-level signal, so that the intelligent circuit breaker can achieve tripping protection. The half-wave precision rectifier submodule includes a first comparator U1.1A connected to the data acquisition module 30 and a semiconductor device D1 connected to the output terminal of the first comparator U1.1A. The semiconductor device D1 is connected to the voltage comparator submodule. The voltage comparator submodule includes a second comparator U1.1B connected to the semiconductor device D1 and a potentiometer RP1 connected to the negative input terminal of the second comparator U1.1B. The output terminal of the second comparator U1.1B is connected to the tripping unit of the intelligent circuit breaker.

[0045] It should be noted that, as Figure 2 As shown, semiconductor device D1 can be a diode. The negative terminal of semiconductor device D1 is also connected to the second resistor R2 and the fourth capacitor C4. The second resistor R2 is also connected to the first resistor R1, and a third capacitor C3 is connected in parallel across the two ends of the second resistor R2. In this embodiment, the first comparator U1.1A and semiconductor device 1 form a half-wave precision rectifier submodule. When the input signal of the first comparator U1.1A is a voltage signal in the positive half-cycle, the output terminal of the first comparator U1.1A outputs a high-level voltage signal. After passing through semiconductor device D1, it is fed back to the second resistor R2 and the first resistor R1, and the output voltage is proportional to the input voltage as (R1+R2) / R1. This voltage is stored in the fourth capacitor C4. When the input signal of the first comparator U1.1A is a voltage signal in the negative half-cycle, the output terminal of the first comparator U1.1A outputs zero, and there is no output voltage after passing through semiconductor device D1. The voltage signal of the negative half-cycle is discarded. At the same time, the third copper electrode C3 in the half-wave precision rectifier module is connected in parallel to the second feedback resistor R2 to generate a strong negative feedback effect on the high-frequency signal in order to filter out high-frequency signal interference.

[0046] In this embodiment of the invention, in the voltage comparison submodule, when the DC signal of the high-level voltage signal exceeds a certain amplitude, the second comparator U1.1B outputs a high-level signal to the tripping unit to realize the tripping of the intelligent circuit breaker, thereby achieving the purpose of abnormal protection without program control.

[0047] It should be noted that the high-level voltage signal output from the half-wave precision rectifier submodule is sent to the positive input terminal of the second comparator U1.1B. The negative input terminal of the second comparator U1.1B is connected to the moving point of potentiometer RP1, which is connected to the VCC power supply. The moving point of potentiometer RP1 can be manually adjusted to produce any voltage from 0V to VCC. When the voltage in the high-level voltage signal output from the half-wave precision rectifier submodule is higher than the preset voltage set by the moving point of potentiometer RP1, the output terminal of the second comparator U1.1B outputs a high-level signal and transmits it to the trip unit, causing the intelligent circuit breaker to trip, indicating that the intelligent circuit breaker has experienced an overcurrent fault.

[0048] like Figure 1 As shown, in one embodiment of the present invention, the data acquisition and protection device of the intelligent circuit breaker includes a communication module 50 connected to the second control module 20. The communication module 50 is used to enable the second control module 20 to interact with the cloud platform.

[0049] It should be noted that the communication module 50 can use RS485 communication and connect to the communication gateway via the Modbus standard protocol. The communication gateway transmits the data from the second control module 20 to the cloud platform, enabling remote data monitoring, data distribution, and remote upgrades. Remote upgrades utilize a proprietary protocol. In this embodiment, the data acquisition and protection device of the intelligent circuit breaker can also be configured with multiple communication interfaces to communicate with gateways such as 4G modules, thereby transmitting the electrical energy data detected by the intelligent circuit breaker to the IoT cloud platform, achieving remote data monitoring, data distribution, and remote upgrades.

[0050] like Figure 1 As shown, in one embodiment of the present invention, the data acquisition and protection device of the intelligent circuit breaker includes a data storage module 60 connected to the second control module 20, and the data storage module 60 is used to store fault data of the intelligent circuit breaker.

[0051] It should be noted that the data storage module 60 and the second control module 20 are connected via SPI communication. The data storage module 60 is used to save the time of the fault of the smart circuit breaker and related fault information, and adopts a data loop recording method to ensure that the saved data will not overflow, so as to achieve the purpose of data review and analysis.

[0052] like Figure 1As shown, in one embodiment of the present invention, the data acquisition and protection device of the intelligent circuit breaker includes a power supply module for supplying power to the first control module, the second control module, the data acquisition module, and the hardware protection module. The power supply module uses three-phase power; as long as any two of the four wires (A / B / C / N) are operational, the data acquisition and protection device of the intelligent circuit breaker can be guaranteed to operate normally. This avoids the data acquisition and protection device from malfunctioning due to a single-phase or neutral wire fault, thus improving the reliability of the data acquisition and protection device of the intelligent circuit breaker.

[0053] Example 2:

[0054] The present invention also provides a control method for a data acquisition and protection device of an intelligent circuit breaker, applied to the aforementioned data acquisition and protection device of the intelligent circuit breaker. The control method includes the following steps:

[0055] Acquire the three-phase voltage data and residual current data of the intelligent circuit breaker;

[0056] Based on the three-phase voltage data and residual current data, the second control module controls the intelligent circuit breaker to perform opening, closing, and fault protection operations.

[0057] Based on the three-phase voltage data, the trip unit of the intelligent circuit breaker is controlled by the hardware protection module to enable the intelligent circuit breaker to trip for protection.

[0058] In this embodiment of the invention, controlling the trip unit of the intelligent circuit breaker based on three-phase voltage data and in conjunction with the hardware protection module includes: comparing the high-level voltage signal of the three-phase voltage data with a preset voltage to obtain a high-level signal, and controlling the trip unit of the intelligent circuit breaker to operate through the high-level signal so that the intelligent circuit breaker can achieve trip protection.

[0059] It should be noted that the content of the data acquisition and protection device of the intelligent circuit breaker in Embodiment 2 has already been described in Embodiment 1, and the content of the data acquisition and protection device of the intelligent circuit breaker will not be described again in Embodiment 2.

[0060] Example 3:

[0061] The present invention also provides a terminal device including a processor and a memory;

[0062] Memory is used to store program code and transfer the program code to the processor;

[0063] The processor is used to execute the control method of the data acquisition and protection device of the intelligent circuit breaker according to the instructions in the program code.

[0064] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0065] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between apparatuses or units through some interfaces, and may be electrical, mechanical, or other forms.

[0066] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0067] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0068] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0069] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A data acquisition and protection device for an intelligent circuit breaker, characterized in that, It includes a first control module, a second control module, a data acquisition module, and a hardware protection module. The first control module and the second control module are bidirectionally connected. The data acquisition module is connected to both the second control module and the hardware protection module. The hardware protection module is also used to connect to the disconnection unit of the intelligent circuit breaker. The data acquisition module is used to collect the three-phase voltage data and residual current data of the intelligent circuit breaker; The second control module is used to control the intelligent circuit breaker to perform opening, closing, and fault protection operations based on the data collected by the data acquisition module. The first control module is used to control the intelligent circuit breaker to perform opening, closing, fault protection operations, and control the operation of the indicator lights based on the data collected by the data acquisition module. The hardware protection module is used to control the trip unit of the intelligent circuit breaker to operate according to the three-phase voltage data, so that the intelligent circuit breaker can achieve trip protection. The hardware protection module includes a half-wave precision rectifier submodule and a voltage comparison submodule connected to the half-wave precision rectifier submodule. The half-wave precision rectifier submodule is used to output a high-level voltage signal based on the voltage signal acquired by the data acquisition module. The voltage comparison submodule is used to output a high-level signal based on the comparison between the high-level voltage signal and a preset voltage. The high-level signal is used to control the tripping unit of the intelligent circuit breaker to operate, so that the intelligent circuit breaker can achieve tripping protection. The first control module and the second control module also periodically send heartbeat data to each other via a UART serial port. If the first control module does not send heartbeat data, the corresponding second control module will control the reset pin of the first control module to reset the program of the first control module and achieve the purpose of restarting the first control module.

2. The data acquisition and protection device for an intelligent circuit breaker according to claim 1, characterized in that, The half-wave precision rectifier submodule includes a first comparator connected to the data acquisition module and a semiconductor device connected to the output terminal of the first comparator. The semiconductor device is connected to the voltage comparator submodule.

3. The data acquisition and protection device for an intelligent circuit breaker according to claim 2, characterized in that, The voltage comparison submodule includes a second comparator connected to the semiconductor device and a potentiometer connected to the negative input terminal of the second comparator. The output terminal of the second comparator is connected to the disconnection unit of the smart circuit breaker.

4. The data acquisition and protection device for an intelligent circuit breaker according to claim 1, characterized in that, It includes a communication module connected to the second control module, the communication module being used to enable data interaction between the second control module and the cloud platform.

5. The data acquisition and protection device for an intelligent circuit breaker according to claim 1, characterized in that, It includes a data storage module connected to the second control module, the data storage module being used to store fault data of the smart circuit breaker.

6. The data acquisition and protection device for an intelligent circuit breaker according to claim 1, characterized in that, This includes a power supply module for supplying power to the first control module, the second control module, the data acquisition module, and the hardware protection module.

7. A control method for a data acquisition and protection device of an intelligent circuit breaker, characterized in that, The control method, applied to the data acquisition and protection device of the intelligent circuit breaker as described in any one of claims 1-6, includes the following steps: Acquire the three-phase voltage data and residual current data of the intelligent circuit breaker; Based on the three-phase voltage data and the residual current data, the second control module controls the intelligent circuit breaker to perform opening, closing, and fault protection operations. Based on the three-phase voltage data, the trip unit of the intelligent circuit breaker is controlled by the hardware protection module to enable the intelligent circuit breaker to perform trip protection.

8. The control method for the data acquisition and protection device of the intelligent circuit breaker according to claim 7, characterized in that, The operation of the trip unit of the intelligent circuit breaker based on the three-phase voltage data and in conjunction with the hardware protection module includes: comparing the high-level voltage signal of the three-phase voltage data with a preset voltage to obtain a high-level signal, and controlling the trip unit of the intelligent circuit breaker to operate through the high-level signal so that the intelligent circuit breaker can achieve trip protection.

9. A terminal device, characterized in that, Including the processor and memory; The memory is used to store program code and transmit the program code to the processor; The processor is configured to execute the control method of the data acquisition and protection device of the intelligent circuit breaker as described in claim 7, according to the instructions in the program code.

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