CN213813752U - Intelligent household power distribution system - Google Patents

Intelligent household power distribution system Download PDF

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Publication number
CN213813752U
CN213813752U CN202022652682.8U CN202022652682U CN213813752U CN 213813752 U CN213813752 U CN 213813752U CN 202022652682 U CN202022652682 U CN 202022652682U CN 213813752 U CN213813752 U CN 213813752U
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module
distribution system
main control
control module
voltage
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CN202022652682.8U
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Inventor
郑贵林
周堪准
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Suntrans Intelligence & Equipment Co ltd
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Suntrans Intelligence & Equipment Co ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/14—Protecting elements, switches, relays or circuit breakers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems
    • Y04S20/242—Home appliances

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  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

The utility model discloses an intelligence house distribution system, include: a main control module; the relay control subsystem comprises a relay driving circuit and a relay, and the relay is connected with the main control module through the relay driving circuit; the output end of the voltage and current detection subsystem is connected with the input end of the main control module; a communication subsystem including a CAT1 communication module, the CAT1 communication module being connected with the master control module; and the master control module and the CAT1 communication module are connected with the power subsystem. The utility model discloses guaranteed when speed transmission data in the realization that the signal is stable, reliable, reduced the network deployment cost to can prevent effectively to draw the arc phenomenon, improve the life of equipment and electric power system's security. The utility model discloses but wide application in intelligent house technical field.

Description

Intelligent household power distribution system
Technical Field
The utility model belongs to the technical field of the intelligent house technique and specifically relates to an intelligent house power distribution system.
Background
The intelligent home is embodied in an internet of things manner under the influence of the internet. The intelligent home connects various devices (such as audio and video devices, lighting systems, curtain control, air conditioner control, security systems, digital cinema systems, audio and video servers, video cabinet systems, network home appliances and the like) in the home together through the Internet of things technology, and provides multiple functions and means such as home appliance control, lighting control, telephone remote control, indoor and outdoor remote control, anti-theft alarm, environment monitoring, heating and ventilation control, infrared forwarding, programmable timing control and the like. Compared with the common home, the intelligent home has the traditional living function, also has the functions of building, network communication, information appliance and equipment automation, provides the omnibearing information interaction function, and even saves the fund for various energy expenses.
The connection between objects and the internet CAN be realized in various ways, such as GPRS, 485, CAN, serial port, 5G, 4G, NB-IoT, etc., wherein: the prices of GPRS, 5G and 4G are relatively high, so that the method is suitable for the market with high-speed communication demands; 485. CAN needs wiring, and the construction is troublesome; NB-IoT is suitable for the low-speed market. In the power distribution control of the intelligent home, a 1-10Mbps medium-speed communication network with stable and reliable demand signals is adopted, however, the existing intelligent home power distribution terminals mostly adopt 485 and 4G communication modes, and the networking cost is high; and the existing intelligent household power distribution terminal does not consider electric arcs brought by alternating current, the electric arcs enable the circuit to continuously keep a conducting state, contact metal materials are ablated by the electric arcs at high temperature, the service life of an electric appliance can be shortened, fusion welding of the contact materials can be even caused in serious cases, and an electric fire hazard is caused.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims to provide a: the intelligent household power distribution system is low in cost and high in safety.
The utility model adopts the technical proposal that:
an intelligent home power distribution system comprising:
a main control module;
the relay control subsystem comprises a relay driving circuit and a relay, and the relay is connected with the main control module through the relay driving circuit;
the output end of the voltage and current detection subsystem is connected with the input end of the main control module;
a communication subsystem including a CAT1 communication module, the CAT1 communication module being connected with the master control module;
and the master control module and the CAT1 communication module are connected with the power subsystem.
Furthermore, the relay control subsystem also comprises an action time measuring circuit, and the master control module and the relay are connected with the action time measuring circuit.
Furthermore, the intelligent household power distribution system further comprises an optical coupling isolation circuit, and the relay driving circuit and the action time measuring circuit are connected with the main control module through the optical coupling isolation circuit.
Further, the voltage and current detection subsystem comprises a voltage sampling circuit, a current sampling circuit and a voltage and current processing module, wherein the output end of the voltage sampling circuit is connected with the first input end of the voltage and current processing module, the output end of the current sampling circuit is connected with the second input end of the voltage and current processing module, and the output end of the voltage and current processing module is connected with the input end of the main control module.
Further, the voltage current processing module is a BL6522B chip.
Furthermore, the communication subsystem further comprises a serial port to RS485 module and an I/O input/output module, the CAT1 communication module is connected with the power subsystem through the serial port to RS485 module, and the I/O input/output module is connected with the main control module.
Further, the power subsystem comprises a first power module, a second power module and a third power module, the second power module and the third power module are connected with the first power module, the second power module is further connected with the main control module, and the third power module is connected with the CAT1 communication module through the serial port-to-RS 485 module.
Further, the main control module is an STM32F103 single chip microcomputer.
Furthermore, the intelligent household power distribution system further comprises a comparator module, and the comparator module is connected with the main control module.
Further, the intelligent household power distribution system further comprises a cloud end, and the cloud end is in communication connection with the CAT1 communication module.
The utility model has the advantages that: the utility model discloses a CAT1 communication module communicates with external communication equipment, has guaranteed that the signal is stable, reliable when realizing the medium speed transmission data, has reduced the network deployment cost; the voltage and current detection subsystem is used for collecting real-time voltage and real-time current of the electric equipment and transmitting the real-time voltage and the real-time current to the main control module, and the main control module controls the relay to disconnect the electric equipment at the moment when the current is zero and to connect the electric equipment at the moment when the voltage is zero through the relay driving circuit, so that the arc discharge phenomenon can be effectively prevented, the service life of the equipment is prolonged, and the safety of an electric power system is improved.
Drawings
Fig. 1 is a schematic structural diagram of an intelligent home power distribution system provided by an embodiment of the present invention;
fig. 2 is a schematic diagram of a CAT1 communication module according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an optical coupler and isolator circuit provided in an embodiment of the present invention;
fig. 4 is a schematic circuit connection diagram of a voltage-current processing module according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a voltage sampling circuit according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a current sampling circuit according to an embodiment of the present invention;
fig. 7 is a schematic circuit connection diagram of a main control module according to an embodiment of the present invention;
fig. 8 is a schematic circuit diagram of a comparator module according to an embodiment of the present invention.
Reference numerals:
VCC1, supply voltage for the second power module; VCC2, supply voltage for the third power module; GND and a ground terminal; AGND, analog signal ground; DGND, digital signal ground; TF CARD, TF memory CARDs.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality is two or more, if there is a description that the first and the second are only used for distinguishing the technical features, but not understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the precedence of the indicated technical features.
In the description of the present invention, unless explicitly defined otherwise, the words such as setting, connecting and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention by combining the specific contents of the technical solutions.
Referring to fig. 1, the embodiment of the utility model provides an intelligence house distribution system, include:
a main control module;
the relay control subsystem comprises a relay drive circuit and a relay, and the relay is connected with the main control module through the relay drive circuit;
the output end of the voltage and current detection subsystem is connected with the input end of the main control module;
the communication subsystem comprises a CAT1 communication module, and the CAT1 communication module is connected with the main control module;
and the power subsystem, the main control module and the CAT1 communication module are connected with the power subsystem.
Specifically, CAT, namely UE-Category, is divided into 10 grades, wherein CAT1 indicates the internet of things communication that the things with uplink speed of 5Mbps and downlink speed of 10Mbps are connected, as shown in fig. 2, the embodiment of the present invention provides a schematic diagram of a CAT1 communication module, the embodiment of the present invention communicates with external communication equipment through a CAT1 communication module, thereby ensuring stable and reliable signals when realizing medium speed data transmission and reducing networking cost; the voltage and current detection subsystem can accurately capture voltage and current waveforms of the electric equipment and transmit the voltage and current waveforms to the main control module, the main control module controls the relay to disconnect the electric equipment at the moment when the current is zero and to connect the electric equipment at the moment when the voltage is zero through the relay driving circuit, arc-free switching is achieved, the service life of the equipment is prolonged, and the safety of a power system is improved.
Referring to fig. 1, as a further optional implementation, the relay control subsystem further includes an action time measuring circuit, and the main control module and the relay are both connected to the action time measuring circuit.
Specifically, since the relay has a certain operation time during actual operation, it is necessary to control the relay operation in advance (the advance amount is the operation time of the relay) according to a voltage zero-crossing point (i.e., a time when the voltage is zero) and a current zero-crossing point (i.e., a time when the current is zero).
The embodiment of the utility model provides an in, measure and transmit to host system relay action time through action time measuring circuit, by host system according to the voltage zero crossing point, the electric current zero crossing point and relay action time control relay disconnection in advance and switch on, further guaranteed not have the arc switching, improved consumer's life and electric power system's security.
Referring to fig. 1, as a further optional implementation manner, the smart home power distribution system further includes an optical coupling isolation circuit, and the relay driving circuit and the action time measuring circuit are both connected to the main control module through the optical coupling isolation circuit.
Specifically, optical coupling buffer circuit can prevent that the relay from being disturbed by abnormal signal and leading to the malfunction, as shown in fig. 3 does the utility model provides an optical coupling buffer circuit's schematic diagram, the embodiment of the utility model provides an adopt TLP291 optoelectronic coupler, keep apart main control module and relay control subsystem through optical coupling buffer circuit, prevented the relay malfunction, further improved electric power system's security.
Referring to fig. 1, as a further optional implementation manner, the voltage and current detection subsystem includes a voltage sampling circuit, a current sampling circuit, and a voltage and current processing module, an output end of the voltage sampling circuit is connected to a first input end of the voltage and current processing module, an output end of the current sampling circuit is connected to a second input end of the voltage and current processing module, and an output end of the voltage and current processing module is connected to an input end of the main control module.
Specifically, the voltage sampling circuit and the current sampling circuit are used for collecting real-time voltage and real-time current of the electric equipment, then working voltage waveforms and working current waveforms of the electric equipment are obtained through processing of the voltage and current processing module, and then the electric equipment is transmitted to the main control module.
Further as an alternative embodiment, the voltage current processing module is a BL6522B chip.
The utility model discloses voltage electric current processing module adopts BL6522B chip, is shown as in fig. 4 does the utility model discloses the circuit connection schematic diagram of the voltage electric current processing module that provides, shown as in fig. 5 does the utility model discloses the schematic diagram of the voltage sampling circuit that provides, shown as in fig. 6 does the utility model provides a current sampling circuit's schematic diagram. Specifically, the BL6522B chip can measure total active power and energy, fundamental active power and energy, reactive power and energy, apparent power and energy of each phase and the combined phase of three phases, can provide parameters such as each phase current, voltage, power factor, and can realize zero crossing point detection of voltage and current.
Referring to fig. 1, as a further optional implementation, the communication subsystem further includes a serial-to-RS 485 module and an I/O input/output module, the CAT1 communication module is connected to the power supply subsystem through the serial-to-RS 485 module, and the I/O input/output module is connected to the main control module.
Specifically, the serial port to RS485 module is configured to convert a serial port signal into a 485 signal, and the I/O input/output module may be used as a signal input interface and a signal output interface of an external local control terminal.
Referring to fig. 1, as a further optional implementation manner, the power subsystem includes a first power module, a second power module, and a third power module, where the second power module and the third power module are both connected to the first power module, the second power module is further connected to the main control module, and the third power module is connected to the CAT1 communication module through the serial port to RS485 module.
In the embodiment of the present invention, the first power module is a power module for converting 220V ac power into 12V dc power, and is used for converting the commercial power into 12V dc power; the second power supply module is an isolation power supply module for converting 12V direct current into 3.3V direct current and is used for converting the 12V direct current into the 3.3V direct current to supply power to the main control module; the third power supply module is an isolation power supply module converting 12V to 5V and is used for converting 12V direct current into 5V direct current to supply power to the communication subsystem.
Further as an optional implementation, the main control module is an STM32F103 single chip microcomputer.
Specifically, the utility model discloses host system adopts STM32F103 singlechip, as shown in FIG. 7 does the utility model provides a host system's circuit connection schematic diagram, the utility model discloses host system can gather the voltage and the electric current of consumer in real time through voltage current detection subsystem, and then control relay action.
Referring to fig. 1, as a further optional implementation manner, the smart home power distribution system further includes a comparator module, and the comparator module is connected to the main control module.
Specifically, the utility model discloses comparator module adopts LM393 comparator chip, is shown as figure 8 the utility model discloses the circuit connection schematic diagram of the comparator module that the embodiment of the utility model provides. The embodiment of the utility model provides a preset has undervoltage protection threshold value, overvoltage protection threshold value, current protection threshold value and total overcurrent protection threshold value in host system, and after host system gathered consumer real-time voltage and real-time current through voltage current detection subsystem, rethread comparator module was compared with corresponding threshold value of predetermineeing with the gathering result to feed back the comparative result to host system, issue corresponding control command according to the comparative result by host system. For example, when the voltage of a certain electric device is collected to be lower than a set undervoltage protection threshold or higher than a set overvoltage protection threshold, the main control module issues a control instruction to disconnect a relay corresponding to the electric device; when the collected current of a certain electric device is higher than a current protection threshold value, the main control module can also issue a control instruction to disconnect a relay corresponding to the electric device; when the sum of the collected currents of all the electric equipment is higher than the total overcurrent protection threshold value, the main control module can issue a control instruction to disconnect all the relays.
The embodiment of the utility model provides an in, through the setting of host system, voltage electric current detection subsystem, relay control subsystem and comparator module, can realize functions such as power distribution system's undervoltage protection, overvoltage protection, overcurrent protection, promoted power distribution system's security and stability.
Referring to fig. 1, as a further optional implementation, the smart home power distribution system further includes a cloud end, and the cloud end is connected in communication with the CAT1 communication module.
The embodiment of the utility model provides a connect the high in the clouds through CAT1 communication module and can realize remote monitoring, management distribution log, look over equipment power consumption situation etc. the user can look over through cell-phone APP connection high in the clouds, has promoted user's experience and has felt.
The embodiment of the utility model provides a have following advantage:
1) the switching of the zero crossing point of the alternating current is realized, the arc discharge phenomenon of the relay is greatly reduced, the equipment is protected from being impacted by the arc, the service life of the equipment is prolonged, and the safety of a power system is improved;
2) the CAT1 communication module is adopted to communicate with external communication equipment, so that stable and reliable signals are ensured while medium-speed data transmission is realized, and networking cost is reduced;
3) the functions of undervoltage protection, overvoltage protection, overcurrent protection, full automatic disconnection and the like of the power distribution system are realized, and the safety and the stability of the power distribution system are improved;
4) the method comprises the following steps that a local control mode and a remote control mode are provided, when a power distribution system is in an off-line state, a switch can be controlled through a manual key, or an RS485 patch cord is used for being connected with a computer, and then local control is carried out through an upper computer; when the power distribution system is connected to the network through CAT1 communication, the system can be remotely measured and controlled through the mobile phone APP, and the real-time state of the electric equipment can be monitored through the mobile phone APP, so that the experience of a user is improved.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the foregoing and various other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention.

Claims (10)

1. The utility model provides an intelligence house distribution system which characterized in that includes:
a main control module;
the relay control subsystem comprises a relay driving circuit and a relay, and the relay is connected with the main control module through the relay driving circuit;
the output end of the voltage and current detection subsystem is connected with the input end of the main control module;
a communication subsystem including a CAT1 communication module, the CAT1 communication module being connected with the master control module;
and the master control module and the CAT1 communication module are connected with the power subsystem.
2. The smart home power distribution system of claim 1, wherein: the relay control subsystem also comprises an action time measuring circuit, and the main control module and the relay are connected with the action time measuring circuit.
3. The smart home power distribution system of claim 2, wherein: the intelligent household power distribution system further comprises an optical coupling isolation circuit, and the relay driving circuit and the action time measuring circuit are connected with the main control module through the optical coupling isolation circuit.
4. The smart home power distribution system of claim 1, wherein: the voltage and current detection subsystem comprises a voltage sampling circuit, a current sampling circuit and a voltage and current processing module, wherein the output end of the voltage sampling circuit is connected with the first input end of the voltage and current processing module, the output end of the current sampling circuit is connected with the second input end of the voltage and current processing module, and the output end of the voltage and current processing module is connected with the input end of the main control module.
5. The smart home power distribution system of claim 4, wherein: the voltage and current processing module is a BL6522B chip.
6. The smart home power distribution system of claim 1, wherein: the communication subsystem further comprises a serial port to RS485 module and an I/O input/output module, the CAT1 communication module is connected with the power subsystem through the serial port to RS485 module, and the I/O input/output module is connected with the main control module.
7. The smart home power distribution system of claim 6, wherein: the power supply subsystem comprises a first power supply module, a second power supply module and a third power supply module, the second power supply module and the third power supply module are connected with the first power supply module, the second power supply module is further connected with the main control module, and the third power supply module is connected with the CAT1 communication module through the serial port-to-RS 485 module.
8. The smart home power distribution system of claim 1, wherein: the main control module is an STM32F103 single chip microcomputer.
9. The smart home power distribution system of claim 1, wherein: the intelligent household power distribution system further comprises a comparator module, and the comparator module is connected with the main control module.
10. An intelligent home power distribution system according to any one of claims 1-9, wherein: the intelligent household power distribution system further comprises a cloud end, and the cloud end is in communication connection with the CAT1 communication module.
CN202022652682.8U 2020-11-16 2020-11-16 Intelligent household power distribution system Active CN213813752U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022652682.8U CN213813752U (en) 2020-11-16 2020-11-16 Intelligent household power distribution system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022652682.8U CN213813752U (en) 2020-11-16 2020-11-16 Intelligent household power distribution system

Publications (1)

Publication Number Publication Date
CN213813752U true CN213813752U (en) 2021-07-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022652682.8U Active CN213813752U (en) 2020-11-16 2020-11-16 Intelligent household power distribution system

Country Status (1)

Country Link
CN (1) CN213813752U (en)

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