CN212365789U - Circuit breaker - Google Patents

Abstract

The application provides a circuit breaker, relates to electrical equipment technical field. The method comprises the following steps: the system comprises a microprocessor MPU, a metering chip, a current transformer, a topology identification circuit and a micro control unit MCU; the MPU is in communication connection with the metering chip, and the metering chip is respectively and electrically connected with the current transformer and the electric power line inlet end, so that the MPU controls the metering chip to acquire first current information of the current transformer and first voltage information of the electric power line inlet end; the MPU is also electrically connected with the topology identification circuit to control the topology identification circuit to send first topology data, calculate second topology data according to the first current information and the first voltage information, and perform topology identification according to the first topology data and the second topology data; the MPU is also in communication connection with the MCU to calculate the first power parameter and send the first power parameter to the MCU. The number of hardware circuits is reduced, the circuit structure of the circuit breaker is simplified, and the cost of the circuit breaker is reduced.

Description

Circuit breaker

Technical Field

The utility model relates to an electrical equipment technical field particularly, relates to a circuit breaker.

Background

With the development of power technology, circuit breakers are also widely used. The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition within a prescribed time.

In the related art, a Micro Controller Unit (MCU) may be provided in the circuit breaker to realize data acquisition of voltage current data and perform a simple data processing function. If the circuit breaker is required to add other functions, a plurality of memories or a plurality of hardware circuits can be arranged outside the circuit breaker.

However, in the related art, when other functions are added, the number of required memories or hardware circuits is large, so that the circuit structure of the circuit breaker can be complicated, and the cost is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a circuit breaker to the not enough among the above-mentioned prior art to in solving the correlation technique, when increasing other functions, required memory or hardware circuit are in large quantity, make the circuit structure of circuit breaker can add the complicacy, still increased the problem of cost.

In order to achieve the above object, the embodiment of the present invention adopts the following technical solutions:

in a first aspect, an embodiment of the present invention provides a circuit breaker, the circuit breaker includes: the system comprises a microprocessor MPU, a metering chip, a current transformer, a topology identification circuit and a micro control unit MCU;

the MPU is in communication connection with the metering chip, and the metering chip is respectively and electrically connected with the current transformer and the electric power line inlet end, so that the MPU controls the metering chip to acquire first current information of the current transformer and first voltage information of the electric power line inlet end;

the MPU is also electrically connected with the topology identification circuit to control the topology identification circuit to send first topology data, calculate second topology data according to the first current information and the first voltage information, and perform topology identification according to the first topology data and the second topology data;

the MPU is further in communication connection with the MCU to calculate a first electric energy parameter according to the first current information and the first voltage information and send the first electric energy parameter to the MCU, so that the MCU controls a display device to display the first electric energy parameter.

Optionally, the circuit breaker further includes: and the MPU is in communication connection with an upper computer through the PLC module so as to receive networking instructions sent by the upper computer and send power parameters and topology data obtained by topology identification to the upper computer.

Optionally, the MPU is communicatively connected to the MCU through a serial communication interface to perform data synchronization through the serial communication interface.

Optionally, the serial communication interface is: the UART interface is a universal asynchronous receiver-transmitter.

Optionally, the MPU is connected to the MCU through an input/output IO interface to perform reset control on the MCU.

Optionally, the metering chip is disposed on a core board card of the MPU.

Optionally, the circuit breaker includes: the first operational amplifier circuit and the second operational amplifier circuit;

the MCU is connected with the current transformer through the first operational amplifier circuit so as to acquire second current information acquired by the current transformer through the first operational amplifier circuit;

the MCU is connected with the electric power line inlet end through the second operational amplifier circuit so as to acquire second voltage information of the electric power line inlet end through the second operational amplifier circuit;

the MCU is also used for calculating to obtain a second electric energy parameter according to the second current information and the second voltage information; and executing a protection action according to the first electric energy parameter or the second electric energy parameter.

Optionally, the circuit breaker includes: a magnetic flux converter; the MCU is connected with the magnetic flux converter;

and the MCU is used for controlling the working state of the magnetic flux converter according to the first electric energy parameter or the second electric energy parameter.

Optionally, the PLC module is a high-speed power carrier HPLC module.

Optionally, the circuit breaker includes: the temperature sensor, the third operational amplifier circuit and the busbar are arranged;

the MCU is connected with the temperature sensor through the third operational amplifier circuit, and the temperature sensor is connected with the busbar;

the temperature sensor is used for acquiring temperature information of the busbar;

and the MCU is used for acquiring the temperature information of the busbar through the third operational amplifier circuit.

The beneficial effect of this application is: an embodiment of the present application provides a circuit breaker, include: the system comprises a microprocessor MPU, a metering chip, a current transformer, a topology identification circuit and a micro control unit MCU; the MPU is in communication connection with the metering chip, and the metering chip is respectively and electrically connected with the current transformer and the electric power line inlet end, so that the MPU controls the metering chip to acquire first current information of the current transformer and first voltage information of the electric power line inlet end; the MPU is also electrically connected with the topology identification circuit to control the topology identification circuit to send first topology data, calculate second topology data according to the first current information and the first voltage information, and perform topology identification according to the first topology data and the second topology data; the MPU is also in communication connection with the MCU to calculate a first electric energy parameter according to the first current information and the first voltage information and send the first electric energy parameter to the MCU, so that the MCU controls the display equipment to display the first electric energy parameter. Through the communication connection of the metering chip, the current transformer and the electric power line inlet end, the MPU and the metering chip, and the MPU is in communication connection with the MCU, the topology identification function and the function of displaying the first electric energy parameter can be added, the number of hardware circuits is reduced, the circuit structure of the circuit breaker is simplified, and the cost of the circuit breaker is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a circuit breaker according to the present invention;

fig. 2 is a schematic structural diagram of a circuit breaker according to the present invention;

fig. 3 is a schematic structural diagram of a circuit breaker according to the present invention;

fig. 4 is a schematic structural diagram of a circuit breaker according to the present invention;

fig. 5 is a schematic flow chart of a circuit breaker control method provided by the present invention;

fig. 6 is a schematic structural diagram of a circuit breaker control device provided by the present invention;

fig. 7 is a schematic structural diagram of an MPU provided by the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it should be noted that if the terms "upper", "lower", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually arranged when the product of the application is used, the description is only for convenience of describing the application and simplifying the description, but the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and operation, and thus, cannot be understood as the limitation of the application.

Furthermore, the terms "first," "second," and the like in the description and in the claims, and in the drawings described above, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It should be noted that the features of the embodiments of the present application may be combined with each other without conflict.

Fig. 1 is the utility model provides a pair of the structure schematic diagram of circuit breaker, as shown in fig. 1, this circuit breaker can include: an MPU101(Microprocessor Unit), a metering chip 102, a current transformer 103, a topology identification circuit 104, and an MCU105(Microcontroller Unit).

The MPU101 is in communication connection with the metering chip 102, and the metering chip 102 is electrically connected to the current transformer 103 and the power line inlet 106, so that the MPU101 controls the metering chip 102 to acquire first current information of the current transformer 103 and first voltage information of the power line inlet 106.

In addition, the MPU101 is also electrically connected to the topology identification circuit 104 to control the topology identification circuit 104 to transmit first topology data, calculate second topology data from the first current information and the first voltage information, and perform topology identification from the first topology data and the second topology data.

In a possible implementation manner, the MPU101 may control the topology identification circuit 104 to send first topology data, on one hand, the first topology data may be transmitted to the current transformer 103 of the circuit breaker through a power line, and the MPU101 controls the metering chip 102 to collect first current information of the current transformer 103 and first voltage information of the power line inlet 106, and determines second topology data according to the collected current first current information and first voltage information.

On the other hand, the circuit breaker is connected with other circuit breakers through a power line, and the first topology data can also be detected by the current transformers 103 of other circuit breakers, so that the MPUs 101 of other circuit breakers can control the corresponding metering chips 102 to collect the first current information of the current transformers 103 of other circuit breakers and the first voltage information of the corresponding power inlet end 106, and the MPUs 101 of other circuit breakers determine the second topology data according to the collected current first current information and the collected current first voltage information. The other circuit breakers are located in the same branch as the circuit breaker, and for example, the other circuit breaker may be a higher-level circuit breaker of the circuit breaker.

In the topology network, the MPU101 in each breaker may determine corresponding topology data according to the first topology data and the second topology data to realize topology identification.

In addition, the MPU101 is also communicatively connected to the MCU105 to calculate a first power parameter from the first current information and the first voltage information, and transmit the first power parameter to the MCU105, so that the MCU105 controls the display device to display the first power parameter. The MCU105 is connected to a display device, and the display device may be a part of a circuit breaker or a device independent from the circuit breaker, which is not specifically limited in the embodiments of the present application.

Wherein the first power parameters include at least two of: voltage parameters, current parameters, power parameters, energy parameters.

In some embodiments, the MPU101 may calculate a first power parameter from the first current information and the first voltage information and transmit the first power parameter to the MCU 105; accordingly, the MCU105 may receive the first power parameter and control the display device to display the first power parameter.

Optionally, the MCU105 may further determine whether the first power parameter satisfies a condition, and execute a protection action if the first power parameter does not satisfy the condition.

In the embodiment of the present application, as shown in fig. 1, the MPU101 and the metrology chip 102 may be disposed on one circuit board, and the MPU101 and the metrology chip 102 may also be disposed on different circuit boards, which is not particularly limited by the embodiment of the present application.

To sum up, the embodiment of the present application provides a circuit breaker, including: a microprocessor MPU101, a metering chip 102, a current transformer 103, a topology identification circuit 104 and a micro control unit MCU 105; the MPU101 is in communication connection with the metering chip 102, and the metering chip 102 is respectively and electrically connected with the current transformer 103 and the power line inlet end 106, so that the MPU101 controls the metering chip 102 to collect first current information of the current transformer 103 and first voltage information of the power line inlet end 106; the MPU101 is further electrically connected to the topology identification circuit 104 to control the topology identification circuit 104 to transmit first topology data, calculate second topology data according to the first current information and the first voltage information, and perform topology identification according to the first topology data and the second topology data; the MPU101 is further communicatively connected to the MCU105 to calculate a first power parameter from the first current information and the first voltage information, and transmit the first power parameter to the MCU105, so that the MCU105 controls the display device to display the first power parameter. The metering chip 102 is in communication connection with the current transformer 103, the power line inlet end 106, the MPU101 and the metering chip 102, and the MPU101 is in communication connection with the MCU105, so that the topology identification function and the function of displaying the first power parameter can be added, the number of hardware circuits is reduced, the circuit structure of the circuit breaker is simplified, and the cost of the circuit breaker is reduced.

Optionally, fig. 2 is a schematic structural diagram of the circuit breaker provided by the present invention, as shown in fig. 2, the circuit breaker may further include: a first operational amplifier circuit 107 and a second operational amplifier circuit 108.

The MCU105 is connected with the current transformer 103 through a first operational amplifier circuit 107 so as to obtain second current information acquired by the current transformer 103 through the first operational amplifier circuit 107; the MCU105 is connected to the power line inlet 106 through the second operational amplifier circuit 108, so as to obtain the second voltage information of the power line inlet 106 through the second operational amplifier circuit 108.

In addition, the MCU105 is further configured to calculate a second electric energy parameter according to the second current information and the second voltage information; and executing the protection action according to the first power parameter or the second power parameter.

In a possible implementation manner, the first operational amplifier circuit 107 may amplify the second current information collected by the current transformer 103 to obtain amplified second current information, and send the amplified second current information to the MCU105, and the MCU105 may obtain the amplified second current information.

Correspondingly, the second operational amplifier circuit 108 may amplify the second voltage information of the power line inlet 106 to obtain the amplified second voltage information, and send the amplified second voltage information to the MCU105, and the MCU105 may obtain the amplified second voltage information. The MCU105 may calculate a second power parameter according to the amplified second current information and the amplified second voltage information.

In this embodiment, if the MCU105 can obtain both the first power parameter and the second power parameter, it determines whether to perform a protection action according to the first power parameter. The circuit breaker can also be connected with a Display device, and the Display device can be an LCD (Liquid Crystal Display); the circuit breaker may further be connected to an LED (Light Emitting Diode), and if the MCU105 only obtains the first electric energy parameter, a first prompt message is generated, and the LCD and/or the LED is controlled to operate according to the first prompt message, where the first prompt message is used to prompt that the second current information and the second voltage information are abnormal.

Similarly, if the MCU105 only obtains the second power parameter, a second prompt message is generated, and the LCD and/or the LED are controlled to operate according to the second prompt message, where the second prompt message is used to prompt the first current information and the first voltage information to obtain an abnormality.

In summary, the MCU105 and the MPU101 both have voltage information and current information collection functions, and can exchange comparison data, thereby improving accuracy and reducing the possibility of errors, and performing double insurance work.

Optionally, as shown in fig. 2, the circuit breaker includes: a magnetic flux converter 109; the MCU105 is connected to a magnetic flux converter 109.

The MCU105 is configured to control an operating state of the magnetic flux converter 109 according to the first power parameter or the second power parameter.

In a possible embodiment, the MCU105 may determine whether the first power parameter satisfies a preset condition, and if not, control the magnetic flux converter 109 to trip to perform a protection action; or; the MCU105 may determine whether the second power parameter satisfies a predetermined condition, and if not, control the magnetic flux converter 109 to trip to perform a protection action. The MCU105 can preferentially control the operating state of the magnetic flux converter 109 according to the first power parameter.

Optionally, fig. 3 is the utility model provides a pair of structural schematic diagram of circuit breaker, as shown in fig. 3, PLC (Power Line Communication) module 110, MPU101 pass through PLC module 110 and host computer Communication connection to receive the networking instruction that the host computer sent, and send electrical parameter to the host computer, and the topological data that topology discernment obtained.

In some embodiments, when the upper computer pre-acquires the topology network where the circuit breaker is located, the PLC module 110 may send a networking instruction to the MPU101, and then the MPU101 may control the topology identification circuit 104 to send first topology data, and obtain second topology data by calculation according to the first current information and the second voltage information, and then obtain topology data corresponding to the circuit breaker according to the first topology data and the second topology data, and the MPU101 of each circuit breaker sends the topology data to the upper computer through the PLC module 110; and the upper computer determines a topological network diagram where the circuit breaker is located according to the topological data.

In summary, since the MPU101 has a plurality of functional interfaces, the topology identification circuit 104, the PLC module 110, and the metering chip 102 can be directly connected, and peripheral circuits can be greatly reduced. Furthermore, the metering chip 102 can provide higher measurement data, and the accuracy of the circuit breaker control is improved.

Alternatively, the PLC module 110 may be an HPLC (High Power Line Communication) module. When the PLC module 110 may be an HPLC module, the data transmission rate between the MPU101 and the upper computer may be increased.

It should be noted that the MCU105 can send synchronization information to the MPU101, and the MPU101 can acquire the synchronization information and send the synchronization information to the upper computer through the PLC module 110, and accordingly, the upper computer can acquire the synchronization information. For example, the synchronization information may include the amplified second current information, the amplified second voltage information, and the second power parameter.

Optionally, the MPU101 is communicatively connected to the MCU105 through a serial communication interface to perform data synchronization through the serial communication interface.

Alternatively, the serial communication interface may be a UART (Universal Asynchronous Receiver/Transmitter) interface.

In the embodiment of the present application, the MPU101 transmits the first power parameter to the MCU105 through the UART interface. The MCU105 can transmit synchronization information to the MPU101 through a UART interface.

Optionally, the MPU101 is connected to the MCU105 through an IO (In/Out) interface to perform reset control on the MCU 105.

The MPU101 resets a reset command to the MCU105 through the IO interface, and the MCU105 acquires the reset command through the IO interface and performs a reset operation according to the reset command.

Optionally, fig. 4 is a schematic structural diagram of the circuit breaker provided by the present invention, as shown in fig. 4, the circuit breaker may further include: a temperature sensor 112, a third operational amplifier circuit 111 and a busbar.

The MCU105 is connected with a temperature sensor 112 through a third operational amplifier circuit 111, and the temperature sensor 112 is connected with the busbar; the temperature sensor 112 is used for acquiring temperature information of the busbar; the MCU105 is configured to obtain temperature information of the busbar through the third operational amplifier circuit 111. The synchronization information may include: and (4) temperature information of the busbar.

In this embodiment, the temperature sensor 112 may collect temperature information of the busbar and send the temperature information to the third operational amplifier circuit 111, and the third operational amplifier circuit 111 may receive the temperature information and amplify the temperature information to obtain amplified temperature information, and send the amplified temperature information to the MCU105, where the MCU105 may obtain the amplified temperature information.

It should be noted that the MCU105 can package the synchronization information and then send the packaged synchronization information to the MPU101, and the MPU101 can receive the packaged synchronization information and send the packaged synchronization information to the upper computer through the PLC module 110. The MCU105 may send the synchronization information to the MPU101 in real time, or send the synchronization information at preset intervals, which is not particularly limited in the embodiments of the present application.

In addition, the temperature information may be used to represent the temperature of each power line of the busbar, and similarly, the first current information, the first voltage information, the second current information, and the second voltage information may also represent the information of each power line. The power line may be a three-phase power line comprising: phase lines A, B and C.

The MCU105 may also be connected to a key, which may be operated by a user, and may generate a corresponding level signal and transmit the level signal to the MCU 105. The MCU105 can receive the level signal and perform corresponding control. Therefore, the control of the circuit breaker by a user can be realized.

The MCU105 may also be connected to a FRAM (ferroelectric Memory) to combine the nonvolatile data storage characteristics of a ROM (Read Only Memory) with the advantages of a RAM (Random Access Memory) such as unlimited Read/write, high-speed Read/write, and low power consumption, so as to cooperate with the MCU105 to realize corresponding control. The FRAM and the MCU105 may communicate with each other through an SPI (Serial Peripheral Interface).

The MCU105 may also be connected to a RTC (Real-Time Clock) chip to provide the MCU105 with accurate Real-Time or an accurate Time reference, so as to cooperate with the MCU105 to realize corresponding control. The RTC chip and the MCU105 communicate with each other through an I2C (Inter-Integrated Circuit, serial communication bus).

MCU105 can also connect temperature and humidity sensor, and temperature and humidity sensor can gather the temperature information and the humidity information of environment to temperature information and humidity information are sent to MCU105, and correspondingly, MCU105 receives temperature information and humidity information, and control LCD shows this temperature information and humidity information. Wherein, the temperature and humidity sensor communicates with the MCU105 through I2C.

The MCU105 can also be connected with a communication bus, the communication bus can be an RS485 bus, the MCU105 can be connected with a terminal through the communication bus, a user can carry out debugging operation on the terminal, the terminal can respond to the debugging operation of the user to generate a debugging instruction, the debugging instruction is sent to the MCU105 through the communication bus, and debugging action is carried out in response to the debugging instruction. The debugging of the circuit breaker is realized. The MCU105 and the communication bus may communicate via UART.

In the embodiment of the present application, the functions implemented by the MPU101 may include: the first voltage information and the second current information are accurately measured and calculated, the first topology data are sent, the second topology data are received, and communication between the PLC module 110 and an upper computer is controlled.

The functions implemented by the MCU may include: measuring parameters such as first current information, first voltage information and temperature information of the busbar, executing protection action, displaying control of the LCD and the like.

Fig. 5 is a schematic flow chart of a circuit breaker control method provided by the present invention, which is applied to the MPU in the circuit breaker shown in any one of fig. 1 to 4, as shown in fig. 5, the circuit breaker control method may include:

s101, controlling a metering chip to acquire first current information of a current transformer and first voltage information of an electric power inlet end.

S102, controlling the topology identification circuit to send first topology data.

In this embodiment of the application, the MPU may control the topology identification circuit to send the first topology data at intervals of a preset time period, and the MPU may also control the topology identification circuit to send the first topology data according to a received networking instruction sent by the upper computer.

And S103, calculating second topology data according to the first current information and the first voltage information.

And S104, carrying out topology identification according to the first topology data and the second topology data.

S105, calculating a first electric energy parameter according to the first current information and the first voltage information, and sending the first electric energy parameter to the MCU, so that the MCU controls the display equipment to display the first electric energy parameter.

It should be noted that, the processes of S101 to S105 are similar to those described above with respect to the circuit breaker, and the embodiments may refer to the above embodiment of the circuit breaker, and are not described again here.

Optionally, the MPU is pre-installed with: the system comprises an electric energy acquisition application program, a topology control application program, a data interaction application program and a data routing application program.

The process of controlling the metering chip to acquire the first current information of the current transformer and the first voltage information of the power line inlet end in S101 may include:

the method comprises the steps that an electric energy acquisition application program is adopted to control a metering chip to acquire first current information of a current transformer and first voltage information of an electric power inlet terminal;

the step of controlling the topology identification circuit to send the first topology data in S102 may include:

a topology control application program is adopted to control a topology identification circuit to send first topology data;

before calculating the second topology data according to the first current information and the first voltage information in S103, the method may further include:

sending first current information and first voltage information in the electric energy acquisition application program to a topology control application program by adopting a data routing application program;

the step of calculating the second topology data according to the first current information and the first voltage information in S103 includes:

calculating second topology data according to the first current information and the first voltage information by adopting a topology control application program; and carrying out topology identification according to the first topology data and the second topology data.

In the step S104, performing topology identification according to the first topology data and the second topology data includes:

and performing topology identification according to the first topology data and the second topology data by adopting a topology control application program.

In the above S105, calculating a first power parameter according to the first current information and the first voltage information, and sending the first power parameter to the MCU includes:

calculating a first electric energy parameter according to the first current information and the first voltage information by adopting an electric energy acquisition application program;

sending a first electric energy parameter in the electric energy acquisition application program to a data interaction application program by adopting a data routing application program;

and sending the first electric energy parameter to the MCU by adopting a data interaction application program.

The MPU can also adopt a data interaction application program to acquire the synchronous information sent by the MCU.

Further, the MPU is also previously mounted with: a carrier control application.

In a possible implementation manner, the MPU uses a carrier control application program to control the PLC module to obtain a networking instruction sent by the upper computer, and uses a data routing application program to send the networking instruction in the carrier control application program to the topology control application program, so that the topology identification circuit is controlled to send the first topology data by using the topology control application program.

Correspondingly, after the topology data are determined by the topology control application program, the topology data can be sent to the carrier control application program by the data routing application program, so that the carrier control application program is used for controlling the PLC module to send the topology data to the upper computer.

It should be noted that the MPU may be a computing processing unit with an RTOS (Real Time Operating System), and may support simultaneous operation of multiple applications such as an electric energy collection application, a topology control application, a data interaction application, a data routing application, and a carrier control application, and each application may perform its own function and may maintain mutual communication, so as to improve the Operating efficiency of the MPU and reduce the response Time. The calculation processing capacity of the circuit breaker is improved, and data acquisition and analysis can be completed better and faster.

The circuit breaker control device, the MPU, and the like for executing the circuit breaker control method provided by the present application are described below, and specific implementation processes and technical effects thereof are referred to in the relevant content of the circuit breaker control method, and are not described in detail below.

Fig. 6 is a schematic structural diagram of a circuit breaker control device according to the present invention, which is applied to the MPU in the circuit breaker shown in any one of fig. 1 to 4, as shown in fig. 6, the circuit breaker control device may include:

the acquisition control module 601 is used for controlling the metering chip to acquire first current information of the current transformer and first voltage information of the power line inlet end;

a topology control module 602, configured to control the topology identification circuit to send the first topology data; calculating second topological data according to the first current information and the first voltage information; carrying out topology identification according to the first topology data and the second topology data;

the calculating module 603 is configured to calculate a first electric energy parameter according to the first current information and the first voltage information, and send the first electric energy parameter to the MCU, so that the MCU controls the display device to display the first electric energy parameter.

The above-mentioned apparatus is used for executing the method provided by the foregoing embodiment, and the implementation principle and technical effect are similar, which are not described herein again.

These above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others. For another example, when one of the above modules is implemented in the form of a Processing element scheduler code, the Processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor capable of calling program code. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).

Fig. 7 is a schematic structural diagram of a circuit breaker according to the present invention, the MPU may include: memory 701, processor 702. The MPU101 is in communication connection with the metering chip 102, and the metering chip 102 is electrically connected with the current transformer 103 and the power line inlet end 106 respectively; the MPU101 is also electrically connected to a topology identification circuit 104; the MPU101 is also communicatively connected to the MCU 105; the MPU101 is connected to the memory 113;

the memory 113 stores a computer program executable by the MPU101, and the MPU101 executes the computer program to perform the method embodiment described above with respect to fig. 5. The specific implementation and technical effects are similar, and are not described herein again.

Optionally, the present invention also provides a program product, such as a computer readable storage medium, comprising a program which, when executed by an MPU, is adapted to perform the method embodiment described above with respect to fig. 5.

In the several embodiments provided in the present disclosure, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium, and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) or a processor (english: processor) to execute some steps of the method according to various embodiments of the present invention. And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A circuit breaker, characterized in that the circuit breaker comprises: the system comprises a microprocessor MPU, a metering chip, a current transformer, a topology identification circuit and a micro control unit MCU;

the MPU is in communication connection with the metering chip, and the metering chip is respectively and electrically connected with the current transformer and the electric power line inlet end, so that the MPU controls the metering chip to acquire first current information of the current transformer and first voltage information of the electric power line inlet end;

the MPU is also electrically connected with the topology identification circuit to control the topology identification circuit to send first topology data, calculate second topology data according to the first current information and the first voltage information, and perform topology identification according to the first topology data and the second topology data;

the MPU is further in communication connection with the MCU to calculate a first electric energy parameter according to the first current information and the first voltage information and send the first electric energy parameter to the MCU, so that the MCU controls a display device to display the first electric energy parameter.

2. The circuit breaker of claim 1, further comprising: and the MPU is in communication connection with an upper computer through the PLC module so as to receive networking instructions sent by the upper computer and send power parameters and topology data obtained by topology identification to the upper computer.

3. The circuit breaker of claim 1, wherein the MPU is communicatively coupled to the MCU via a serial communication interface for data synchronization via the serial communication interface.

4. The circuit breaker of claim 3, wherein the serial communication interface is: the UART interface is a universal asynchronous receiver-transmitter.

5. The circuit breaker according to claim 1, wherein the MPU is connected to the MCU through an input/output IO interface to perform reset control on the MCU.

6. The circuit breaker of any of claims 1-5, wherein the metering chip is disposed on a core board of the MPU.

7. The circuit breaker according to any of claims 1-5, characterized in that the circuit breaker comprises: the first operational amplifier circuit and the second operational amplifier circuit;

the MCU is connected with the current transformer through the first operational amplifier circuit so as to acquire second current information acquired by the current transformer through the first operational amplifier circuit;

the MCU is connected with the electric power line inlet end through the second operational amplifier circuit so as to acquire second voltage information of the electric power line inlet end through the second operational amplifier circuit;

the MCU is also used for calculating to obtain a second electric energy parameter according to the second current information and the second voltage information; and executing a protection action according to the first electric energy parameter or the second electric energy parameter.

8. The circuit breaker of claim 7, wherein the circuit breaker comprises: a magnetic flux converter; the MCU is connected with the magnetic flux converter;

and the MCU is used for controlling the working state of the magnetic flux converter according to the first electric energy parameter or the second electric energy parameter.

9. The circuit breaker of claim 2, wherein the PLC module is a high-speed power carrier HPLC module.

10. The circuit breaker according to any of claims 1-5, characterized in that the circuit breaker comprises: the temperature sensor, the third operational amplifier circuit and the busbar are arranged;

the MCU is connected with the temperature sensor through the third operational amplifier circuit, and the temperature sensor is connected with the busbar;

the temperature sensor is used for acquiring temperature information of the busbar;

and the MCU is used for acquiring the temperature information of the busbar through the third operational amplifier circuit.

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