CN215646136U

CN215646136U - Control module of AC miniature circuit breaker

Info

Publication number: CN215646136U
Application number: CN202121462379.XU
Authority: CN
Inventors: 张腾; 张威; 刘自伟; 李飞龙; 刘浩
Original assignee: Beijing Bevone Electric Co ltd
Current assignee: Beijing Bevone Electric Co ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2022-01-25
Anticipated expiration: 2031-06-29

Abstract

The utility model discloses a control module of an alternating-current miniature circuit breaker, which comprises a communication and power interface, a communication module, a power module, a microcontroller module, an electric energy metering module, a power failure monitoring module, an LED indicating module, a motor driving module, a Hall module, a temperature measuring module and a key module. The control module of the alternating-current miniature circuit breaker is applied to an alternating-current power distribution system, can measure power consumption parameters such as current, voltage and electric energy in the power distribution system, can judge mechanical faults and report fault information and give an alarm locally, protects circuit data by executing a local strategy, realizes circuit switching-off, and achieves the purposes of protecting electric appliances and maintaining power consumption safety.

Description

Control module of AC miniature circuit breaker

Technical Field

The utility model relates to the field of alternating-current miniature circuit breakers, in particular to a control module of an alternating-current miniature circuit breaker.

Background

Along with the development of science and technology, users pay more and more attention to electricity consumption data and electricity consumption safety. On the one hand, various power consumption data are collected in time, and the fault reasons are analyzed through the power consumption data, so that the power consumption fault can be solved in an auxiliary mode. On the other hand, different protection parameters are set through different environments, and internal logic is executed through the circuit breaker, so that the purposes of protecting electric appliances and maintaining electricity utilization safety can be achieved. For example, different power utilization parameters can be set for different loads, and when the loads are abnormal, the power utilization equipment can be turned off in time, so that safety accidents such as fire disasters are avoided.

The prior art is still very imperfect to develop and apply the function, and besides, the prior art has the following problems:

1. the prior art stores the electric energy information at regular time, cannot store data in time when power failure occurs, and cannot ensure the integrity of the data.

2. In the prior art, a secondary line mode is adopted for low-voltage power supply and communication, and the lines are connected reversely by misoperation easily, so that safety accidents are caused.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a control module for an ac miniature circuit breaker, which solves the above-mentioned problems of the prior art.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

a control module of an alternating-current miniature circuit breaker comprises a communication and power interface, a communication module, a power module, a microcontroller module, an electric energy metering module, a power failure monitoring module, an LED indicating module, a motor driving module, a Hall module, a temperature measuring module and a key module; the communication and power interface adopts a simple ox horn base, and the communication module and the power module are respectively connected with the simple ox horn base; the communication module is connected to an I O port of the microcontroller module and is used for bidirectional communication; the power module is respectively connected with the microcontroller module, the electric energy metering module, the power failure monitoring module, the LED indicating module, the motor driving module, the Hall module, the temperature measuring module and the communication module and is used for supplying power to the microcontroller module, the electric energy metering module, the power failure monitoring module, the LED indicating module, the motor driving module, the Hall module, the temperature measuring module and the communication module; the electric energy metering module is connected with the microcontroller module through an SPI bus; the power failure monitoring module, the LED indicating module, the motor driving module, the Hall module and the key module are respectively connected with an IO port of the microcontroller module; the temperature measurement module is connected with an ADC pin of the microcontroller module.

Further, the microcontroller module is used for processing all logic processes; the microcontroller module processes data transmitted by the electric energy metering module, the power failure monitoring module, the Hall module and the temperature measuring module, and transmits the data through the communication module.

Further, the power module comprises a DC-DC voltage reduction chip and a low dropout linear regulator, wherein the DC-DC voltage reduction chip is used for converting input 12V direct current into 5V direct current, and the low dropout linear regulator is used for converting the 5V direct current into 3.3V direct current; the 12V direct current is used for supplying power to the power failure monitoring module and the motor driving module; the 5V direct current is used for supplying power to the Hall module and the communication module; the 3.3V direct current supplies power to the microcontroller module, the electric energy metering module, the LED indicating module and the temperature measuring module.

Further, the power failure monitoring module is used for outputting a low level when the input voltage is reduced to 9V, and the low level is transmitted to an IO port of the microcontroller module to drive the microcontroller module to store data.

Further, the LED indicating module is used for receiving the level signal transmitted by the microcontroller module and displaying the state of the circuit breaker according to the level signal.

Further, the motor driving module is used for receiving the level change signal transmitted by the microcontroller module, so as to drive the mechanical structure to open or close.

Further, the Hall module is used for monitoring magnetic force change and outputting a signal to the microcontroller module, and the microcontroller module is used for judging signal abnormity and further sending the level change signal to the motor driving module so as to drive the mechanical structure to be switched off.

Furthermore, the temperature measuring module is used for measuring the temperature change of the wiring terminal at the lower opening of the miniature circuit breaker and outputting a change voltage, and the microcontroller module is used for calculating the temperature of the wiring terminal according to the change voltage; when the temperature of the wiring terminal exceeds 90 ℃, the microcontroller module sends the level change signal to the motor driving module, so that the mechanical structure is driven to be switched off.

The utility model has the beneficial effects that:

1. the utility model has the functions of electric energy measurement, voltage measurement, current measurement and power grid frequency measurement;

2. the utility model can judge the mechanical fault and report the fault information and give an alarm locally;

3. the utility model has the function of local strategy execution;

4. the power failure detection module can timely store data when power fails, so that the data integrity is ensured;

5. the utility model has the communication function and can communicate with the outside;

6. in the prior art, a secondary line mode is adopted for low-voltage power supply and communication, and the line is easily reversely connected in the secondary line mode, so that misoperation is easy. The utility model adopts a simple ox horn base plugging mode and has an anti-reverse connection design, thereby not causing reverse connection of a power line and a communication line and improving the safety.

Drawings

FIG. 1 is a schematic diagram of an AC miniature circuit breaker control module of the present invention;

figure 2 is a flow chart of the program logic for the ac miniature circuit breaker control module of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model.

Referring to fig. 1, the control module of the ac miniature circuit breaker of the present invention includes a communication and power interface, a communication module, a power module, a microcontroller module, an electric energy metering module, a power failure monitoring module, an LED indication module, a motor driving module, a hall module, a temperature measuring module, and a key module.

The communication and power interface adopts a simple ox horn base, the communication module and the power module are respectively connected with the simple ox horn base, and the communication and the power use the same interface.

The micro-controller module is used as a control core of the small circuit breaker control module and is used for processing all logic processes; the microcontroller module processes data transmitted by the electric energy metering module, the power failure monitoring module, the Hall module and the temperature measuring module, and transmits the data through the communication module.

The communication module is connected to the IO port of the microcontroller module to realize bidirectional communication. The communication module is responsible for uploading data inside the microcontroller module, fault information reporting and alarming can be achieved, and meanwhile the communication module is responsible for transmitting an external instruction into the microprocessor module and is used for achieving remote opening and closing operations and the like.

The power module supplies power to the microcontroller module, the electric energy metering module, the power failure monitoring module, the LED indicating module, the motor driving module, the Hall module, the temperature measuring module and the communication module. The power module uses a DC-DC voltage reduction chip to convert 12V input direct current converted by the AC-DC conversion circuit into 5V direct current, and then uses a low-dropout linear voltage regulator to convert the 5V direct current into 3.3V direct current. The 12V direct current is used for supplying power to the power failure monitoring module and the motor driving module. The 5V direct current is used for supplying power to the Hall module and the communication module. The 3.3V direct current supplies power to the microcontroller module, the electric energy metering module, the LED indicating module and the temperature measuring module.

The electric energy metering module is responsible for measuring electrical parameters such as current, voltage, electric power, electric energy, frequency, power factor, etc. The measured value is transmitted to the microcontroller module through the SPI bus.

And the power failure monitoring module is connected with an IO port of the microcontroller module and is responsible for monitoring input voltage. The method adopts a hardware monitoring mode, and when the input voltage is reduced to 9V, a low level is output to an IO port of the microcontroller module to drive the microcontroller module to rapidly store data.

The LED indicating module is responsible for displaying various current states of the circuit breaker, including a circuit breaker opening and closing state, a circuit breaker running state and a circuit breaker fault state. The LED indicating module is connected with an IO port of the microcontroller module, and the LED lamp is turned on and off by changing the level state of the IO port.

The motor driving module is connected with an IO port of the microcontroller module, and the microcontroller module controls the motor driving module through IO level change to drive the mechanical structure to open or close.

The Hall module is connected with an IO port of the microcontroller module, outputs a signal by monitoring magnetic force change, and the signal is fed back to the microcontroller module. The microcontroller module controls the motor drive module using the feedback signal.

The temperature measurement module is connected with an ADC pin of the microcontroller module and used for measuring the temperature change of a wiring terminal at the lower opening of the miniature circuit breaker. The virtual connection can cause temperature rise, and the virtual connection of the line is identified according to the principle. The temperature measurement module outputs a variable voltage, and the microcontroller module calculates the temperature of the wiring terminal by measuring the variable voltage. When the temperature of the wiring terminal exceeds 90 ℃, the microcontroller module controls the motor driving module to carry out switching-off protection on the circuit breaker.

The key module is connected with an IO port of the microcontroller module, the key module changes the level of the IO port of the microcontroller module through key operation, and the microcontroller identifies the level change to judge whether the key is pressed down.

The electric energy metering module is matched with a miniature circuit breaker for use, and when the electric energy metering module works normally, parameters such as voltage, current, electric energy, power factor and the like on the miniature circuit breaker are measured. And the microcontroller module compares the measured values with alarm values stored in a memory in advance and executes alarm related logic when the measured values exceed an upper limit alarm value or are lower than a lower limit alarm value. For example, the upper limit alarm voltage value set in the module is ac 275V, and when the measured effective voltage value is ac 280V and exceeds ac 275V for 5 seconds, the microcontroller module sends a signal to the motor driving module, so as to drive the mechanism to open the brake and execute overvoltage protection.

By adopting the technical scheme disclosed by the utility model, the following beneficial effects are obtained:

3. the utility model has the function of local strategy execution;

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and improvements can be made without departing from the principle of the present invention, and such modifications and improvements should also be considered within the scope of the present invention.

Claims

1. A control module of an alternating-current miniature circuit breaker is characterized by comprising a communication and power interface, a communication module, a power module, a microcontroller module, an electric energy metering module, a power failure monitoring module, an LED indicating module, a motor driving module, a Hall module, a temperature measuring module and a key module; the communication and power interface adopts a simple ox horn base, and the communication module and the power module are respectively connected with the simple ox horn base; the communication module is connected to an IO port of the microcontroller module and used for bidirectional communication; the power module is respectively connected with the microcontroller module, the electric energy metering module, the power failure monitoring module, the LED indicating module, the motor driving module, the Hall module, the temperature measuring module and the communication module and is used for supplying power to the microcontroller module, the electric energy metering module, the power failure monitoring module, the LED indicating module, the motor driving module, the Hall module, the temperature measuring module and the communication module; the electric energy metering module is connected with the microcontroller module through an SPI bus; the power failure monitoring module, the LED indicating module, the motor driving module, the Hall module and the key module are respectively connected with an IO port of the microcontroller module; the temperature measurement module is connected with an ADC pin of the microcontroller module.

2. The ac miniature circuit breaker control module of claim 1, wherein said microcontroller module is configured to process all logic processes; the microcontroller module processes data transmitted by the electric energy metering module, the power failure monitoring module, the Hall module and the temperature measuring module, and transmits the data through the communication module.

3. The ac miniature circuit breaker control module of claim 1, wherein said power module comprises a DC-DC buck chip for converting an input 12V DC current to a 5V DC current and a low dropout linear regulator for converting said 5V DC current to a 3.3V DC current; the 12V direct current is used for supplying power to the power failure monitoring module and the motor driving module; the 5V direct current is used for supplying power to the Hall module and the communication module; the 3.3V direct current supplies power to the microcontroller module, the electric energy metering module, the LED indicating module and the temperature measuring module.

4. The ac miniature circuit breaker control module of claim 1, wherein said power down monitoring module is configured to output a low level when an input voltage drops to 9V, said low level is transmitted to an IO port of said microcontroller module, and said microcontroller module is driven to store data.

5. The ac miniature circuit breaker control module as set forth in claim 1, wherein said LED indicator module is adapted to receive a level signal from said microcontroller module and to display the status of the circuit breaker based on said level signal.

6. The ac miniature circuit breaker control module of claim 1, wherein said motor driver module is configured to receive a level change signal transmitted from said microcontroller module, thereby driving a mechanical structure to open or close.

7. The ac miniature circuit breaker control module of claim 6, wherein said hall module is configured to monitor magnetic force variation and output a signal to said microcontroller module, and said microcontroller module is configured to determine signal abnormality and further send said level variation signal to said motor driving module, thereby driving said mechanical structure to open.

8. The ac miniature circuit breaker control module of claim 6, wherein said temperature measuring module is configured to measure a temperature change of a terminal at a lower opening of the miniature circuit breaker and output a change voltage, and said microcontroller module is configured to calculate a terminal temperature from said change voltage; when the temperature of the wiring terminal exceeds 90 ℃, the microcontroller module sends the level change signal to the motor driving module, so that the mechanical structure is driven to be switched off.