CN216818243U - Intelligent miniature circuit breaker - Google Patents
Intelligent miniature circuit breaker Download PDFInfo
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- CN216818243U CN216818243U CN202220066882.1U CN202220066882U CN216818243U CN 216818243 U CN216818243 U CN 216818243U CN 202220066882 U CN202220066882 U CN 202220066882U CN 216818243 U CN216818243 U CN 216818243U
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Abstract
The utility model provides an intelligent miniature circuit breaker which comprises a power supply unit, a communication unit, a release unit, an electric parameter monitoring unit, a switching-on and switching-off monitoring unit, a temperature monitoring unit and a main control chip. The main control chip is connected with each unit, has short circuit, overload protection and leakage protection functions, realizes real-time monitoring of various parameters, increases a control interface and a corresponding remote control function, integrates the functions of various safety power utilization modules on the market, and can reduce the volume to adapt to various installation environments compared with products in the prior art with the same function.
Description
Technical Field
The utility model relates to the field of circuit breaker structures, in particular to an intelligent miniature circuit breaker.
Background
The leakage breaker is a switch which can automatically act when the leakage current in the circuit exceeds a preset value, is mainly used for protecting the electric shock of a person with fatal danger when equipment has leakage fault, has the functions of overload and short-circuit protection, can be used for protecting the overload and short circuit of a line or a motor, and can also be used for the infrequent switching and starting of the line under the normal condition. The current type leakage circuit breaker using a part of zero sequence current in the circuit as an action signal is widely applied. The traditional residual current circuit breaker does not have a control function and a corresponding interface, and the remote control can only be realized by connecting a control loop through an external wire, so that accessories are added, a control power supply is required to be used, the size is increased, and meanwhile, the control loop cannot realize the remote control and the circuit state monitoring.
SUMMERY OF THE UTILITY MODEL
An intelligent miniature circuit breaker comprises a power supply unit, a communication unit, a release unit, an electrical parameter monitoring unit, a switching-on and switching-off monitoring unit, a temperature monitoring unit and a main control chip; the circuit breaker has short circuit, overload protection and earth leakage protection functions, and can realize remote control and circuit state monitoring.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
an intelligent miniature circuit breaker comprises a power supply unit, and a communication unit, a release unit, an electrical parameter monitoring unit, a switching-on/off monitoring unit, a temperature monitoring unit and a main control chip which are connected with the power supply unit; the main control chip is connected with the communication unit to communicate with an external upper computer; the main control chip is connected with the release unit to control the opening and closing state of the circuit breaker; the main control chip is connected with the electrical parameter monitoring unit to monitor the states of voltage, current and leakage current of the circuit breaker in real time; the main control chip is connected with the opening and closing monitoring unit to monitor the opening and closing state of the circuit breaker in real time; the main control chip is connected with the temperature monitoring unit to monitor the temperature in the cavity of the circuit breaker in real time.
Further, the communication unit comprises a wired communication unit and a wireless communication unit which are independent of each other.
Further, the wired communication unit comprises an RS485 communication module and an RS485 interface; the RS485 communication module is connected with the main control chip; and the RS485 communication module is connected with an external RS485 upper computer through an RS485 interface.
Further, the wireless communication unit comprises a Bluetooth circuit; the Bluetooth circuit is positioned in the main control chip; the Bluetooth circuit is connected with an external Bluetooth upper computer.
Further, the power supply unit includes a main power supply unit and an auxiliary power supply unit; the main power supply unit and the auxiliary power supply unit are respectively and independently connected with other units and the main control chip to supply power; the main power supply unit and the auxiliary power supply unit have mutual arrangement function.
Further, the release unit comprises a release control module and a release; a release coil is arranged in the release; the tripper control module is respectively connected with the main control chip and the tripper coil so as to control the tripper coil to be powered on and powered off according to instructions of the main control chip.
Furthermore, the electrical parameter monitoring unit comprises an electrical parameter monitoring module, a voltage sampling line, a current transformer and a zero sequence transformer; the electric parameter monitoring module is internally provided with a voltage sampling circuit, a current sampling circuit and a leakage current sampling circuit; the voltage sampling circuit is respectively connected with the main control chip and the voltage sampling line to acquire a voltage signal; the current sampling circuit is respectively connected with the main control chip and a secondary side wire of the current transformer to obtain a current signal; and the leakage current sampling circuit is respectively connected with the main control chip and a secondary side wire of the zero sequence transformer to obtain a leakage current signal.
Furthermore, the switching-on/off monitoring unit comprises a switching-on/off state monitoring module, a Hall sensor and a magnet; the magnet is arranged on an operating handle of the circuit breaker; the Hall sensor is arranged at a position corresponding to the detection magnet; and the opening and closing state monitoring module is respectively connected with the main control chip and the Hall sensor.
Further, the temperature monitoring unit comprises a temperature monitoring module and a temperature sensor; the temperature monitoring module is respectively connected with the main control chip and the temperature sensor to detect the temperature in the contact cavity of the circuit breaker.
Furthermore, an analog interface and a digital interface are arranged in the main control chip; the analog interface comprises an ADC interface; the digital interface comprises GPIO and UART interfaces.
The utility model provides an intelligent miniature circuit breaker which comprises a power supply unit, a communication unit, a release unit, an electric parameter monitoring unit, a switching-on and switching-off monitoring unit, a temperature monitoring unit and a main control chip. The main control chip is connected with each unit, has short circuit, overload protection and leakage protection functions, realizes real-time monitoring of various parameters, increases a control interface and a corresponding remote control function, integrates the functions of various safety power utilization modules on the market, and can reduce the volume to adapt to various installation environments compared with products in the prior art with the same function.
Drawings
Fig. 1 is a schematic diagram of a structure of an intelligent miniature circuit breaker.
Detailed Description
The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.
The embodiments of the present disclosure are described below with specific examples, and other advantages and effects of the present disclosure will be readily apparent to those skilled in the art from the disclosure in the specification. It is to be understood that the described embodiments are merely illustrative of some, and not restrictive, of the embodiments of the disclosure. The disclosure may be embodied or carried out in various other specific embodiments, and various modifications and changes may be made in the details within the description without departing from the spirit of the disclosure. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
Example one
Fig. 1 is a schematic diagram of a structure of an intelligent miniature circuit breaker, wherein the circuit breaker comprises a power supply unit, a communication unit, a release unit, an electrical parameter monitoring unit, a switching-on/off monitoring unit, a temperature monitoring unit and a main control chip. The power supply unit is connected with other units and a main control chip to provide a power supply, the main control chip is connected with the communication unit to realize the communication between the circuit breaker and an external upper computer, the main control chip is connected with the release unit to control the opening and closing state of the circuit breaker, the main control chip is connected with the electric parameter monitoring unit to monitor the voltage, the current and the leakage current of the circuit breaker in real time, the main control chip is connected with the opening and closing state of the circuit breaker in real time, and the main control chip is connected with the temperature monitoring unit to monitor the temperature in the contact cavity of the circuit breaker in real time.
In specific implementation, a control circuit board is further arranged in the circuit breaker, and the main control chip is installed on the circuit board.
In a specific implementation, the communication unit includes a wired communication unit and a wireless communication unit which are independent from each other.
In specific implementation, when the wired communication unit adopts an RS485 communication mode, the wired communication unit comprises an RS485 communication module. RS485 communication module installs on the control scheme board to internal connection main control chip, outside pass through RS485 interface connection RS485 host computer, can connect the RS485 gateway and carry out local data transmission, RS485 gateway can select to upload and forward the monitoring in order to realize remote interface or APP to the backstage.
In a specific implementation, when the wireless communication unit adopts a bluetooth communication mode, the wireless communication unit comprises a bluetooth circuit. The Bluetooth circuit is positioned in the main control chip, the main control chip can realize low-power-consumption data transmission with an external Bluetooth upper computer through Bluetooth transmission, and the data is sent to an external Bluetooth gateway to realize local wireless transmission; the Bluetooth gateway can select uploading and forwarding to the background, and monitoring of a remote interface or an APP is achieved.
In specific implementation, the power supply unit comprises a main power supply unit and an auxiliary power supply unit, and the main power supply unit and the auxiliary power supply unit are respectively and independently connected with other units and the main control chip to supply power to other units and the main control chip. The main power supply unit and the auxiliary power supply unit have mutual arrangement functions, namely when the circuit breaker is connected to use an auxiliary power supply, the main control chip can control the switch to automatically switch to the auxiliary power supply unit to supply power and stop the main power supply unit to work.
In specific implementation, the main power supply unit comprises a main power supply module, the main power supply module is installed on the control circuit board, an external power line is installed at a wire inlet end of the circuit breaker in parallel, and the main power supply module is connected with the external power line to obtain electric energy and supply power to other modules.
In specific implementation, the auxiliary power supply unit comprises an auxiliary power supply interface and an auxiliary power supply module, wherein the auxiliary power supply module is installed on the control circuit board and connected with the auxiliary power supply interface to obtain electric energy from the outside and supply power to other modules.
In specific implementation, the power supply connected to the auxiliary power supply interface is dc 12V.
In specific implementation, the tripper unit comprises a tripper control module and a tripper, and a tripper coil is arranged in the tripper. The tripper control module is arranged on the control circuit board and is respectively connected with the main control chip and the tripper coil, the tripper coil can be electrified according to the instruction of the main control chip to realize tripping of the circuit breaker, and the circuit breaker is switched off at the moment; in addition, the tripper can also adopt a bimetallic strip to push a connecting rod to drive the opening.
In specific implementation, the electrical parameter monitoring unit comprises an electrical parameter monitoring module, a voltage sampling line, a current transformer and a zero sequence transformer; the electric parameter monitoring module is installed on the control circuit board and is provided with a voltage sampling circuit, a current sampling circuit and a leakage current sampling circuit; the voltage sampling line is connected to the incoming line end of the circuit breaker in parallel, and the voltage sampling circuit is respectively connected with the main control chip and the voltage sampling line so as to acquire and process voltage signals and upload the voltage signals to the main control chip; the current transformer is sleeved on a live wire, and the current sampling circuit is respectively connected with the main control chip and a secondary side wire of the current transformer so as to obtain a current signal, process the current signal and upload the processed current signal to the main control chip; and the leakage current sampling circuit is respectively connected with the main control chip and a secondary side wire of the zero sequence transformer so as to obtain a leakage current signal, and the leakage current signal is sent to the main control chip for processing after being processed. The main control chip thus obtains the data of the voltage, the current and the leakage current of the circuit breaker.
In specific implementation, the switching-on/off monitoring unit comprises a switching-on/off state monitoring module, a Hall sensor and a magnet; the magnet is arranged on an operating handle of the circuit breaker, the opening and closing state monitoring module is arranged on the control circuit board and is respectively connected with the main control chip and the Hall sensor, and the Hall sensor is arranged at a position corresponding to the detection magnet; the opening and closing state monitoring module detects the position of a magnet arranged on the operating handle through a Hall sensor, so as to indirectly detect the position of the operating handle and send a corresponding level signal to the main control chip, and therefore the main control chip obtains the opening and closing state of the circuit breaker.
In the concrete implementation, the temperature monitoring unit includes temperature monitoring module and temperature sensor, temperature sensor installs near zero line incoming line terminal, the temperature monitoring module is installed control scheme board is last, the temperature monitoring module is connected with main control chip and temperature sensor respectively to obtain the temperature in near circuit breaker contact cavity and convey to main control chip.
In a specific implementation, the temperature sensor adopts a thermistor.
In specific implementation, an analog interface and a digital interface are arranged in the main control chip; the analog interface comprises an ADC interface; the digital interface comprises GPIO and UART interfaces.
The utility model provides an intelligent miniature circuit breaker which has short circuit and overload protection functions, collects current through a current transformer, realizes electronic overload protection, and drives a release to enable the circuit breaker to open a brake if the current of a circuit is greater than a preset value and the duration time exceeds the preset value. The host computer can set the earth leakage protection parameter of main control chip through the communication unit, according to the parameter setting throw in or cut off earth leakage protection function or self-defined earth leakage protection value that sets up. The master control chip can also record the events of electric leakage, test trip, overload, short circuit, manual switching-off and the like.
The circuit breaker is complete in function, integrates the functions of various safety power utilization modules on the market, and achieves real-time monitoring and opening functions of various parameters. Compared with the prior art, the prior art is generally a 3P module, a 4P module or even a larger module under the same function, the utility model can reduce the volume to 2P without reducing the function, and can adapt to various installation environments; compared with the product which is 2P, the functional diversity of the product occupies great advantage. In the aspect of communication, an RS485 communication is used as a basis, and a plurality of communication modes support an expanded mode, so that the communication mode that a safety electricity utilization module in the market is single and cannot be changed is broken, and the customization is really realized according to the actual environment of the site. The utility model provides a technical means of bluetooth communication, the convenient construction debugging personnel in the certain limit is operated the circuit breaker debugging, and with the bluetooth integration in main control chip, realize the single-chip design simultaneously, compare in traditional external bluetooth module of singlechip, have integrated level height, small, low power dissipation advantage. In addition, the internal structure design is optimized, the product is not affected, and meanwhile, the production efficiency of installing the mutual inductor and the accuracy and stability of temperature measurement are improved through an innovative technical means. The power supply adopts the incoming line end to supply power, and a direct current 12V power supply interface is reserved, so that the power supply can be applied to the situation that the power supply of a main loop is not needed, such as the situation that the power supply of a breaker cannot be directly supplied when the voltage of the main loop is too small.
In the description of the present invention, it is to be understood that the terms "intermediate", "length", "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", "radial", "circumferential", and the like, indicate orientations and positional relationships that are based on the orientations and positional relationships shown in the drawings, are used for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the first feature may be "on" the second feature in direct contact with the second feature, or the first and second features may be in indirect contact via an intermediate. "plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The above description is for the purpose of illustrating embodiments of the utility model and is not intended to limit the utility model, and it will be apparent to those skilled in the art that any modification, equivalent replacement, or improvement made without departing from the spirit and principle of the utility model shall fall within the protection scope of the utility model.
Claims (10)
1. An intelligent miniature circuit breaker is characterized by comprising a power supply unit, a communication unit, a release unit, an electrical parameter monitoring unit, a switching-on/off monitoring unit, a temperature monitoring unit and a main control chip, wherein the communication unit, the release unit, the electrical parameter monitoring unit, the switching-off monitoring unit, the temperature monitoring unit and the main control chip are connected with the power supply unit; the main control chip is connected with the communication unit to communicate with an external upper computer; the main control chip is connected with the release unit to control the opening and closing state of the circuit breaker; the main control chip is connected with the electrical parameter monitoring unit to monitor the states of voltage, current and leakage current of the circuit breaker in real time; the main control chip is connected with the opening and closing monitoring unit to monitor the opening and closing state of the circuit breaker in real time; the main control chip is connected with the temperature monitoring unit to monitor the temperature in the cavity of the circuit breaker in real time.
2. The intelligent miniature circuit breaker of claim 1 wherein said communication unit comprises a wired communication unit and a wireless communication unit that are independent of each other.
3. The intelligent miniature circuit breaker of claim 2, wherein said wired communication unit comprises an RS485 communication module and an RS485 interface; the RS485 communication module is connected with the main control chip; and the RS485 communication module is connected with an external RS485 upper computer through an RS485 interface.
4. The intelligent miniature circuit breaker of claim 2 wherein said wireless communication unit comprises a bluetooth circuit; the Bluetooth circuit is positioned in the main control chip; the Bluetooth circuit is connected with an external Bluetooth upper computer.
5. The intelligent miniature circuit breaker of claim 1 wherein said power supply unit comprises a main power supply unit and an auxiliary power supply unit; the main power supply unit and the auxiliary power supply unit are respectively and independently connected with other units and the main control chip to supply power; the main power supply unit and the auxiliary power supply unit have mutual arrangement function.
6. The intelligent miniature circuit breaker of claim 1 wherein said trip unit comprises a trip control module and a trip; a release coil is arranged in the release; the tripper control module is respectively connected with the main control chip and the tripper coil so as to control the tripper coil to be powered on and powered off according to instructions of the main control chip.
7. The intelligent miniature circuit breaker of claim 1 wherein said electrical parameter monitoring unit comprises an electrical parameter monitoring module and a voltage sampling line, a current transformer, a zero sequence transformer; the electric parameter monitoring module is internally provided with a voltage sampling circuit, a current sampling circuit and a leakage current sampling circuit; the voltage sampling circuit is respectively connected with the main control chip and the voltage sampling line to acquire a voltage signal; the current sampling circuit is respectively connected with the main control chip and a secondary side wire of the current transformer to obtain a current signal; and the leakage current sampling circuit is respectively connected with the main control chip and a secondary side wire of the zero sequence transformer to obtain a leakage current signal.
8. The intelligent miniature circuit breaker according to claim 1, wherein said opening and closing monitoring unit comprises an opening and closing state monitoring module, a hall sensor and a magnet; the magnet is arranged on an operating handle of the circuit breaker; the Hall sensor is arranged at a position corresponding to the detection magnet; and the opening and closing state monitoring module is respectively connected with the main control chip and the Hall sensor.
9. The intelligent miniature circuit breaker of claim 1 wherein said temperature monitoring unit comprises a temperature monitoring module and a temperature sensor; the temperature monitoring module is respectively connected with the main control chip and the temperature sensor to detect the temperature in the contact cavity of the circuit breaker.
10. The intelligent miniature circuit breaker of any one of claims 1 to 9 wherein said master control chip has an analog interface and a digital interface; the analog interface comprises an ADC interface; the digital interface comprises GPIO and UART interfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220066882.1U CN216818243U (en) | 2022-01-11 | 2022-01-11 | Intelligent miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220066882.1U CN216818243U (en) | 2022-01-11 | 2022-01-11 | Intelligent miniature circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216818243U true CN216818243U (en) | 2022-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220066882.1U Active CN216818243U (en) | 2022-01-11 | 2022-01-11 | Intelligent miniature circuit breaker |
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|---|---|
| CN (1) | CN216818243U (en) |
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- 2022-01-11 CN CN202220066882.1U patent/CN216818243U/en active Active
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