CN215646371U - Control module of direct-current miniature circuit breaker - Google Patents
Control module of direct-current miniature circuit breaker Download PDFInfo
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- CN215646371U CN215646371U CN202121462810.0U CN202121462810U CN215646371U CN 215646371 U CN215646371 U CN 215646371U CN 202121462810 U CN202121462810 U CN 202121462810U CN 215646371 U CN215646371 U CN 215646371U
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Abstract
The utility model discloses a control module of a direct-current miniature circuit breaker, which comprises a power supply module, a 485 communication module, a microcontroller module, an electric energy metering module, an LED indicating module, a motor driving module, a Hall module, a clock module, a temperature measuring module, an oil engine signal monitoring module and a key module. The device is applied to a 48V direct current power distribution system, can measure power consumption parameters such as current, voltage and electric energy in the power distribution system, protects various conditions such as overvoltage, undervoltage, overcurrent, temperature abnormity and magnetic force abnormity, provides a remote opening and closing function and a timing opening and closing function, and has high practicability.
Description
Technical Field
The utility model relates to the field of direct-current miniature circuit breakers, in particular to a control module of a direct-current miniature circuit breaker.
Background
The miniature circuit breaker is used as a terminal switch device in a power system, and plays an important role in links of power distribution, line protection, industrial equipment protection and the like. The rise of the comprehensive automation and the dispatching automation of the modern power system makes the traditional circuit breaker far from meeting the requirements of the modern power system. Therefore, an intelligent circuit breaker integrating automation, intellectualization and modularization is required to be designed so as to meet the requirement of a power system under a new environment. The control module of the circuit breaker is used as a central brain, and plays a key role in realizing automation and intellectualization. However, there is no circuit breaker control module with many functions such as parameter measurement and local policy execution in the dc power distribution system.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a control module of a direct current miniature circuit breaker, so as to solve the problems in the prior art.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
a control module of a direct-current miniature circuit breaker comprises a power supply module, a 485 communication module, a microcontroller module, an electric energy metering module, an LED indicating module, a motor driving module, a Hall module, a clock module, a temperature measuring module, an oil engine signal monitoring module and a key module; the 485 communication module is connected to the serial port of the microcontroller module and used for bidirectional communication; the power module is respectively connected with the 485 communication module, the microcontroller module, the electric energy metering module, the LED indicating module, the motor driving module, the Hall module, the clock module, the temperature measuring module and the oil engine signal monitoring module and is used for supplying power to the 485 communication module, the microcontroller module, the electric energy metering module, the LED indicating module, the motor driving module, the Hall module, the clock module, the temperature measuring module and the oil engine signal monitoring module; the electric energy metering module is connected with the microcontroller module through an SPI bus; the LED indicating module, the motor driving module, the Hall module, the clock module, the oil engine signal monitoring 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 presetting an overvoltage protection value, an undervoltage protection value, an overcurrent protection value, timing closing time and/or timing opening time and processing a logic judgment process; the microcontroller module processes data transmitted by the electric energy metering module, the Hall module, the clock module, the temperature measuring module, the oil engine signal monitoring module and the key module, and transmits the processed data through the 485 communication module.
Further, the power supply module supports 36V-80V direct current input, and outputs 12V direct current, 5V direct current and 3.3V direct current; the power module is used for giving the 485 communication module the microcontroller module the electric energy metering module the LED indicating module the motor drive module the hall module the clock module the temperature measurement module with the power supply of oil engine signal monitoring module, wherein 12V direct current is used for giving the motor drive module power supply, 5V direct current is used for giving the 485 communication module the electric energy metering module the hall module with the power supply of oil engine signal monitoring module, 3.3V direct current is used for giving the microcontroller module the LED indicating module with the power supply of temperature measurement module.
Further, the 485 communication module is used for uploading internal data of the microprocessor module to an external device and transmitting an external instruction to the microprocessor module; the 485 module adopts an isolation 485 circuit.
Furthermore, the electric energy metering module is specially used for direct current electric energy metering and can measure electric parameters, and the measured electric parameters are transmitted to the microprocessor module through the SPI bus.
Further, the microcontroller module is used for controlling the motor driving module through IO level change to drive the mechanical structure to open or close.
Further, the Hall module is used for outputting a magnetic force signal by monitoring the change of the magnetic force and transmitting the magnetic force signal to the microcontroller module; the microcontroller module can use the magnetic force signal to control the motor driving module to drive the mechanical structure to open the brake.
Further, the clock module is used for providing the current time to the microcontroller module; the time of the clock module can be guided into an external time correction instruction through the 485 communication module to perform time correction; the timing switching-on time and/or the timing switching-off time of the microcontroller module can be set through an external instruction; the microcontroller module is used for comparing and judging the timing switching-on time and/or the timing switching-off time with the current time acquired from the clock module, and controlling the motor driving module to drive the mechanical mechanism to switch off or switch on when the comparison is consistent.
Further, the temperature measuring module is used for measuring the temperature change of the wiring terminal at the lower opening of the miniature circuit breaker; the temperature measurement module is used for outputting variable voltage to the microcontroller module, the microcontroller module is used for calculating the temperature of the wiring terminal by measuring the variable voltage, and when the temperature of the wiring terminal exceeds a set protection temperature threshold value, the microcontroller module is used for controlling the motor drive module to drive the mechanical mechanism to open the brake.
Furthermore, the oil engine signal monitoring module is externally connected with an oil engine and used for receiving and identifying an oil engine power generation signal and converting the oil engine power generation signal into a level signal which can be identified by the microcontroller module; the microcontroller module is used for judging whether the oil engine works or not through the level signal.
The utility model has the beneficial effects that:
1. the device can measure and measure point parameters such as current, voltage, electric energy and the like of the single direct current loop.
2. Possess the 485 communication function, the electrical parameter that will read passes through 485 communication transmission to external equipment, can modify internal parameter through 485 communication simultaneously.
3. The device has a timing switching-on and switching-off function, and realizes power supply and power failure at a timing section.
4. The system has a local strategy execution function, can work according to set alarm parameters, and realizes protection functions of over-voltage, under-load, over-current, over-temperature and the like.
Drawings
FIG. 1 is a schematic diagram of a DC miniature circuit breaker control module of the present invention;
fig. 2 is a flow chart of the program logic for the dc 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 miniature direct current circuit breaker comprises a power supply module, a 485 communication module, a microcontroller module, an electric energy metering module, an LED indicating module, a motor driving module, a hall module, a clock module, a temperature measuring module, an oil engine signal monitoring module and a key module.
The micro controller module is used as a control core of the miniature circuit breaker control module and is used for processing all logic processes, including communication protocol processing, data reading and instruction sending of the electric energy metering module, control of the LED indicating module, control of the motor driving module, identification of the Hall module signal, identification of the signal sent by the oil engine signal monitoring module, calculation of measured temperature, reading of the timing of the clock module, and identification of whether a key of the key module is pressed down. The microcontroller module processes data transmitted by the electric energy metering module, the Hall module, the clock module, the temperature measuring module, the oil engine signal monitoring module and the key module, and transmits the processed data through the 485 communication module.
The power supply module supports 36-80V direct current input, and the output direct current voltage is 12V, 5V and 3.3V. The power module is used for supplying the 485 communication module, the microcontroller module, the electric energy metering module, the LED indicating module, the motor driving module, the Hall module, the clock module, the temperature measuring module and the oil engine signal monitoring module, wherein 12V direct current is used for supplying the motor driving module, 5V direct current is used for supplying the 485 communication module, the electric energy metering module, the Hall module and the oil engine signal monitoring module, and 3.3V direct current is used for supplying the microcontroller module, the LED indicating module and the temperature measuring module.
The 485 communication module is connected to the serial port of the microprocessor module to realize bidirectional communication. The 485 communication module is responsible for uploading internal data of the microprocessor module to external equipment, and is responsible for transmitting an external instruction into the microprocessor module to realize remote opening and closing operations and the like. And meanwhile, the 485 module adopts an isolation 485 circuit, so that the anti-interference capability is strong.
The electric energy metering module is specially used for direct current electric energy metering and is responsible for measuring electric parameters such as current, voltage, electric power, electric energy and the like. The measured value is transmitted to the microprocessor module through the SPI bus.
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 clock module is connected with an IO port of the microcontroller module, the SPI bus is simulated through the IO port to be communicated with the clock chip, and the microprocessor module is communicated with the clock module to obtain the current time. The time of the clock module can be calibrated through the 485 communication module, and the specific implementation mode is that the 485 communication module transmits an external timing instruction to the microcontroller module, and the microcontroller module sends data to the clock module to complete the timing. The logic related to time in the microcontroller module, such as the timing switching-on and switching-off function, is to provide time according to the clock module, the set time is compared with the time of the clock module in the microcontroller module, and switching-on and switching-off operations are performed after the comparison is consistent. The time set inside the microcontroller module can be set through an external instruction.
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 a set protection temperature threshold value, 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 IO port level of the microcontroller module through key operation, and the microcontroller module identifies level change and judges whether the key is pressed down.
The oil engine signal monitoring module is externally connected with an oil engine, receives and identifies an oil engine power generation signal, and converts the oil engine power generation signal into a level signal which can be identified by the microcontroller module. And the microcontroller module judges whether the oil engine works or not through the level signal.
The utility model is used together with a DC miniature circuit breaker, and can realize the following functions:
overvoltage protection: the overvoltage protection value is written into a charged erasable programmable read only memory of the microcontroller module through the 485 communication module, so that data cannot be lost during power failure. For example, the overvoltage protection value is set to be 60V dc, the microcontroller module reads a voltage value in real time through the electric energy metering module, and when the read voltage value exceeds 60V dc and lasts for more than 5 seconds, the microcontroller module controls the motor driving module to open the miniature circuit breaker, so as to implement overvoltage protection.
Under-voltage protection: and an under-voltage protection value is written into a charged erasable programmable read-only memory of the microcontroller module through the 485 communication module, so that data cannot be lost during power failure. For example, the under-voltage value is set to be 40 Direct Current (DC) voltage, the microcontroller module reads the voltage value in real time through the electric energy metering module, and when the read voltage value is lower than 40 DC voltage and lasts for more than 5 seconds, the microcontroller module controls the motor driving module to open the small circuit breaker, so that under-voltage protection is realized.
Overcurrent protection: and an overcurrent protection value is written into a charged erasable programmable read-only memory of the microcontroller module through the 485 communication module, so that data cannot be lost during power failure. For example, the overcurrent value is set to 40A, the microcontroller module reads a current value in real time through the electric energy metering module, and when the read current value exceeds 40A and lasts for more than 5 seconds, the microcontroller module controls the motor driving module to open the miniature circuit breaker, so that overcurrent protection is realized.
Opening and closing the brake at fixed time: and the timing closing time and/or the timing opening time are/is written into the electrified erasable programmable read only memory of the microcontroller module through the 485 communication module, so that the data cannot be lost during power failure. For example, the timed closing time is set to 6: 00, setting the timing opening time to be 17: 00, reading the real-time of the clock module by the microcontroller module, and controlling the motor driving module to switch on the miniature circuit breaker when the real-time is matched with the timing switching-on time; and when the timing opening time is matched, the microcontroller module controls the motor driving module to open the miniature circuit breaker.
By adopting the technical scheme disclosed by the utility model, the following beneficial effects are obtained:
1. the device can measure and measure point parameters such as current, voltage, electric energy and the like of the single direct current loop.
2. Possess the 485 communication function, the electrical parameter that will read passes through 485 communication transmission to external equipment, can modify internal parameter through 485 communication simultaneously.
3. The device has a timing switching-on and switching-off function, and realizes power supply and power failure at a timing section.
4. The system has a local strategy execution function, can work according to set alarm parameters, and realizes protection functions of over-voltage, under-load, over-current, over-temperature and the like.
The DC miniature circuit breaker control module can be applied to systems such as a base station system and the like which use DC 48V power supply.
1. The single-path electric energy can be measured, and an important basis is provided for clearing the electric charge;
2. in a base station system, base station equipment is completely turned on in a peak period so as to provide better real-time performance and higher communication quality; during the night or off-peak hours, the signal demand decreases and some of the equipment may be turned off. The direct current miniature circuit breaker module can control the direct current miniature circuit breaker to be closed and turned off, so as to control the base station equipment to be started and closed, thereby achieving the purposes of intelligent control and energy consumption saving;
3. through energy consumption monitoring, abnormal equipment can be found, and a power supply can be directly turned off to protect the equipment;
4. the power supply voltage is monitored, and when the power supply voltage is abnormal, the power supply voltage can be timely turned off to protect subordinate equipment
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 (10)
1. A control module of a direct-current miniature circuit breaker is characterized by comprising a power supply module, a 485 communication module, a microcontroller module, an electric energy metering module, an LED indicating module, a motor driving module, a Hall module, a clock module, a temperature measuring module, an oil engine signal monitoring module and a key module; the 485 communication module is connected to the serial port of the microcontroller module and used for bidirectional communication; the power module is respectively connected with the 485 communication module, the microcontroller module, the electric energy metering module, the LED indicating module, the motor driving module, the Hall module, the clock module, the temperature measuring module and the oil engine signal monitoring module and is used for supplying power to the 485 communication module, the microcontroller module, the electric energy metering module, the LED indicating module, the motor driving module, the Hall module, the clock module, the temperature measuring module and the oil engine signal monitoring module; the electric energy metering module is connected with the microcontroller module through an SPI bus; the LED indicating module, the motor driving module, the Hall module, the clock module, the oil engine signal monitoring 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 dc miniature circuit breaker control module of claim 1, wherein said microcontroller module is configured to preset an over-voltage protection value, an under-voltage protection value, an over-current protection value, a timed closing time and/or a timed opening time, and to process all logic determination processes; the microcontroller module processes data transmitted by the electric energy metering module, the Hall module, the clock module, the temperature measuring module, the oil engine signal monitoring module and the key module, and transmits the processed data through the 485 communication module.
3. The dc miniature circuit breaker control module of claim 1, wherein said power module supports a 36V-80V dc input with 12V dc, 5V dc and 3.3V dc outputs; the power module is used for giving the 485 communication module the microcontroller module the electric energy metering module the LED indicating module the motor drive module the hall module the clock module the temperature measurement module with the power supply of oil engine signal monitoring module, wherein 12V direct current is used for giving the motor drive module power supply, 5V direct current is used for giving the 485 communication module the electric energy metering module the hall module with the power supply of oil engine signal monitoring module, 3.3V direct current is used for giving the microcontroller module the LED indicating module with the power supply of temperature measurement module.
4. The control module of claim 1, wherein the 485 communication module is used for uploading internal data of the microprocessor module to an external device and transmitting external commands to the microprocessor module; the 485 module adopts an isolation 485 circuit.
5. The dc miniature circuit breaker control module of claim 1, wherein said power metering module is dedicated to dc power metering and is capable of measuring an electrical parameter, said measured electrical parameter being communicated to said microprocessor module via an SPI bus.
6. The control module of claim 1, wherein the microcontroller module is configured to control the motor driving module through IO level variation to drive a mechanical structure to open or close.
7. The dc miniature circuit breaker control module of claim 6, wherein said hall module is configured to output a magnetic force signal by monitoring a magnetic force variation and transmitting the magnetic force signal to said microcontroller module; the microcontroller module can use the magnetic force signal to control the motor driving module to drive the mechanical structure to open the brake.
8. The direct current miniature circuit breaker control module of claim 6 wherein said clock module is for providing a current time to said microcontroller module; the time of the clock module can be guided into an external time correction instruction through the 485 communication module to perform time correction; the timing switching-on time and/or the timing switching-off time of the microcontroller module can be set through an external instruction; the microcontroller module is used for comparing and judging the timing switching-on time and/or the timing switching-off time with the current time acquired from the clock module, and controlling the motor driving module to drive the mechanical mechanism to switch off or switch on when the comparison is consistent.
9. The control module of claim 6, wherein the temperature measuring module is used for measuring the temperature change of the wiring terminal at the lower opening of the miniature circuit breaker; the temperature measurement module is used for outputting variable voltage to the microcontroller module, the microcontroller module is used for calculating the temperature of the wiring terminal by measuring the variable voltage, and when the temperature of the wiring terminal exceeds a set protection temperature threshold value, the microcontroller module is used for controlling the motor drive module to drive the mechanical mechanism to open the brake.
10. The dc miniature circuit breaker control module of claim 6 wherein said oil engine signal monitoring module is externally connected to an oil engine for receiving and identifying an oil engine power signal and capable of converting said oil engine power signal to a level signal recognizable by said microcontroller module; the microcontroller module is used for judging whether the oil engine works or not through the level signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121462810.0U CN215646371U (en) | 2021-06-29 | 2021-06-29 | Control module of direct-current miniature circuit breaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121462810.0U CN215646371U (en) | 2021-06-29 | 2021-06-29 | Control module of direct-current miniature circuit breaker |
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| Publication Number | Publication Date |
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| CN215646371U true CN215646371U (en) | 2022-01-25 |
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| CN202121462810.0U Active CN215646371U (en) | 2021-06-29 | 2021-06-29 | Control module of direct-current miniature circuit breaker |
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- 2021-06-29 CN CN202121462810.0U patent/CN215646371U/en active Active
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