CN114598355B - Carrier communication system - Google Patents
Carrier communication system Download PDFInfo
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- CN114598355B CN114598355B CN202210124446.XA CN202210124446A CN114598355B CN 114598355 B CN114598355 B CN 114598355B CN 202210124446 A CN202210124446 A CN 202210124446A CN 114598355 B CN114598355 B CN 114598355B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2803—Home automation networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2803—Home automation networks
- H04L2012/284—Home automation networks characterised by the type of medium used
- H04L2012/2843—Mains power line
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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
- 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
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Automation & Control Theory (AREA)
- Power Engineering (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Telephonic Communication Services (AREA)
Abstract
The present application relates to a carrier communication system comprising: a power communication master device, a power communication slave device, a power communication master node, and a power communication child node; the power communication master equipment and the power communication slave equipment are respectively connected with a power line and communicate in a power line carrier communication mode; the power communication main equipment is used for accessing a communication network; the power communication master node is in communication connection with the power communication slave equipment; the power communication sub-node is used for being in communication connection with the controlled device, and the power communication slave device is used for being in communication connection with the master control device. According to the scheme, a carrier communication network can be formed by means of the power line, and the problems of insufficient communication distance and inconvenient wiring of the intelligent home system are solved; and the networking is convenient, the expandability is strong, and the controlled equipment can be directly connected to the power communication sub-node to complete the networking without additional wiring.
Description
Technical Field
The present application relates to the field of carrier communication technologies, and in particular, to a carrier communication system.
Background
At present, the main application field of carrier communication is the power meter reading industry, and because the special carrier coupling communication mode is very compatible with the current meter reading industry, the communication signals are loaded on the power line without paving the communication line again, and compared with the wireless communication mode, the transmission distance is farther and more stable. But carrier communication is less commonly used in domestic or industrial settings.
In the related art, communication modes such as WiFi, bluetooth and the like are generally used in an intelligent home system, so that the wall penetrating effect is poor, the communication distance is insufficient, and the control capability is limited; if a wired network is used, the network cable is inconvenient to arrange in the home, and the workload is great; in addition, carrier communication cannot be transmitted between different voltage classes, and communication across voltage classes cannot be achieved.
Disclosure of Invention
To overcome at least some of the problems in the related art, the present application provides a carrier communication system.
According to an embodiment of the present application, there is provided a carrier communication system including: a power communication master device, a power communication slave device, a power communication master node, and a power communication child node;
the power communication master equipment and the power communication slave equipment are respectively connected with a power line and communicate in a power line carrier communication mode; the power communication master device is used for accessing a communication network;
the power communication master node is in communication connection with the power communication slave equipment;
the power communication sub-node is connected with the power communication main node through a power line, and the power communication sub-node and the power communication main node are communicated through a power line carrier communication mode;
the power communication sub-node is used for being in communication connection with the controlled equipment, and the power communication slave equipment is used for being in communication connection with the master control equipment.
Further, the power communication master device is a power cat; the power communication main equipment is connected with the router through a network port and is used for accessing a communication network; wherein the communication network is a local area network, a wide area network, or a combination of both.
Further, the power communication slave device includes a first power cat and a second power cat;
the first power modem is used for being in communication connection with the power communication main node;
the second power cat is used for being in communication connection with the main control equipment.
Further, the first power modem is a wired power modem, and the first power modem is in communication connection with the power communication master node through a network port;
the second electric power cat is a wireless electric power cat and/or a double-frequency electric power cat, and the second electric power cat is in wireless communication connection with the main control equipment.
Further, the power communication master node is a PLC master node; the power communication sub-node is a PLC sub-node, and the PLC sub-node is in communication connection with the controlled equipment through a Uart interface.
Further, the main control equipment is intelligent computing equipment; the controlled device is an intelligent household appliance.
Further, the master device comprises at least one of: camera, computer, smart phone, tablet computer;
the controlled device includes at least one of: air conditioner, fan, electric rice cooker.
Further, the power communication master node is used for collecting 2M-12M low-frequency band data, and the data are summarized to the power communication master device through the power communication slave device after integration.
Further, the power communication slave device is used for collecting 12-86M high-frequency band data.
Further, the device also comprises a voltage conversion module; the voltage conversion module comprises a three-coil 1:1:1 transformer, and three coils of the transformer are respectively connected with the power communication sub-node, the power line and the direct current load.
The technical scheme provided by the embodiment of the application has the following beneficial effects:
according to the scheme, a carrier communication network can be formed by means of the power line, and the problems of insufficient communication distance and inconvenient wiring of the intelligent home system are solved; and the networking is convenient, the expandability is strong, and the controlled equipment can be directly connected to the power communication sub-node to complete the networking without additional wiring.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
Fig. 1 is a schematic diagram illustrating a structure of a carrier communication system according to an exemplary embodiment.
Fig. 2 is a schematic diagram of an overall implementation of a carrier communication system according to an exemplary embodiment.
Fig. 3 is a schematic diagram of a transformer module, according to an example embodiment.
Fig. 4 is a schematic diagram of the external shape of a transformer module according to an exemplary embodiment.
Fig. 5 is a circuit schematic diagram illustrating a cross voltage level communication according to an example embodiment.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present application. Rather, they are merely examples of systems consistent with aspects of the present application as detailed in the accompanying claims.
Fig. 1 is a schematic diagram illustrating a structure of a carrier communication system according to an exemplary embodiment. The system comprises: a power communication master device, a power communication slave device, a power communication master node, and a power communication child node.
The power communication master equipment and the power communication slave equipment are respectively connected with a power line and communicate in a power line carrier communication mode; the power communication master device is for accessing a communication network. The power communication master node is in communication connection with the power communication slave device. The power communication sub-node is connected with the power communication main node through a power line, and the power communication sub-node and the power communication main node are communicated through a power line carrier communication mode. The power communication sub-node is used for being in communication connection with the controlled equipment, and the power communication slave equipment is used for being in communication connection with the master control equipment.
The invention provides a carrier communication system which can be applied to families or industrial places. According to the scheme, a carrier communication network can be formed by means of the power line, and the problems of insufficient communication distance and inconvenient wiring of the intelligent home system are solved; and the networking is convenient, the expandability is strong, and the controlled equipment can be directly connected to the power communication sub-node to complete the networking without additional wiring.
In some embodiments, the power communication master device is a power cat; the power communication main equipment is connected with the router through a network port and is used for accessing a communication network; wherein the communication network is a local area network, a wide area network, or a combination of both.
The communication network is used for realizing network connection among the power communication main equipment, the power communication auxiliary equipment, the power communication main node and the power communication sub-node, and can comprise various types of wired or wireless networks; such as the internet, a Local Area Network (LAN), a Wide Area Network (WAN), an intranet, a mobile telephone network, a Virtual Private Network (VPN), a cellular or other mobile communications network, bluetooth, NFC, or any combination thereof.
In some embodiments, the power communication slave device includes a first power modem and a second power modem. The first power modem is configured to be communicatively connected to the power communication master node. The second power cat is used for being in communication connection with the main control equipment.
In some embodiments, the first power cat is a wired power cat, and the first power cat is in communication connection with the power communication master node through a network port. The second electric power cat is a wireless electric power cat and/or a double-frequency electric power cat, and the second electric power cat is in wireless communication connection with the main control equipment.
In some embodiments, the power communication master node is a PLC master node; the power communication sub-node is a PLC sub-node, and the PLC sub-node is in communication connection with the controlled equipment through a Uart interface.
In some embodiments, the master device is a smart computing device; the controlled device is an intelligent household appliance.
In some embodiments, the master device comprises at least one of: camera, computer, smart mobile phone, panel computer. The controlled device includes at least one of: air conditioner, fan, electric rice cooker.
In some embodiments, the power communication master node is configured to collect 2M-12M low-frequency band data, and aggregate the data to the power communication master device through the power communication slave device after integrating the data. The power communication slave device is used for collecting 12-86M high-frequency band data.
It should be noted that, currently, the communication channel of the existing carrier power cat is not divided into frequency bands. According to the scheme, work is divided according to different functional intervals, a low-frequency interval (2M-12M) is allocated to an intelligent home, and a high-frequency and high-speed interval (12-86M) is allocated to high-speed requirements such as video surfing. The low-frequency interval is suitable for low-speed, small-data-volume and delay-insensitive scenes and is used for transmitting control data of intelligent home. The high frequency range is suitable for high-speed, large data volume and delay sensitive scenes, and is used for transmitting signals such as video and audio networks. Therefore, the performance of signals in each frequency band can be fully exerted, and the network requirements of multiple scenes are met.
In some embodiments, the device further comprises a voltage conversion module; the voltage conversion module comprises a three-coil 1:1:1 transformer, and three coils of the transformer are respectively connected with the power communication sub-node, the power line and the direct current load.
The scheme of the application is expanded and explained below by combining with a specific application scene.
The invention provides a frequency division carrier communication, wherein resources are distributed to a carrier router in a frequency band of 12M-86MHz, and the frequency division carrier communication is mainly used for high-speed data transmission and can be used for transmitting signals such as a video and audio network; the resources in the frequency band of 2M-12MHz are distributed to the intelligent home control terminal, and the intelligent home control terminal is mainly used for collecting control data and monitoring data; the transmission of data across voltage classes may be performed by the module where there are different voltage classes.
As shown in fig. 2, the overall embodiment of the system of the present invention is illustrated, where the power communication master device corresponds to a power cat, the power communication slave device corresponds to a wired power cat, a wireless power cat, and a dual-frequency power cat, the power communication master node corresponds to a PLC master node, and the power communication slave node corresponds to a PLC slave node. The power line is used as a carrier, the power line cat and a PLC (Power Line Communication ) node are used as main data transmission devices, and under the high-speed network data transmission of the power line cat, equipment such as a camera, a computer, a mobile phone and a tablet can be mounted to provide a high-speed internet access path for the equipment. The PLC node is used as a device data transmission device and can control household appliances such as an air conditioner, a fan, an electric cooker and the like. The PLC technology is mainly applied to power grid meter reading, and is not applied to controlling household appliances at present. The dual-frequency power cat shown in the figure refers to equipment comprising two communication interfaces, namely wireless WiFi and a wired Ethernet port.
According to the scheme, the power cat needs to use a high-speed network data carrier chip, a Botong BCM60350 chip can be selected as a main control, the chip conforms to the HomePlug AV2 protocol, the highest transmission speed can reach 1Gbps theoretically, high-speed traffic can be provided for devices such as mobile phones and computers, the chip comprises an RGMII interface, and the chip can be embedded into a camera module to transmit video data. The high-speed chip is mainly used for electric cats and comprises wires and wireless wires.
The BCM60350 chip supports the design of 1-to-8, can provide high-speed network service for 8 subordinate devices under the condition that one end is accessed to the Internet, has the working frequency band of 2M-86MHz, and needs to close the frequency band port of 2M-12M due to the superposition with the frequency band of the device route. It should be noted that, the bothrough BCM60350 chip in the above embodiment may also use a high-pass QCA7520 chip instead.
The equipment-side control carrier chip in the scheme of the invention can select a HT8621 chip of a moment spring as a main control, the frequency range of a transmission signal can be from 200KHz to 12MHz, 411 sub-carriers can be supported at maximum, the sub-carriers support BPSK, QPSK and 16QAM mapping to realize different rate modes, and the highest transmission speed of a physical layer can reach 12 Mbps. The chip is internally provided with a powerful Turbo forward error correction and interleaving technology, so that reliable communication can be realized under extremely strong noise interference. The control chip is mainly used for equipment ends, such as equipment 1, equipment 2 and equipment 3 in fig. 2. Note that, the qiquan HT8621 chip described in the above embodiment may be replaced with a haisi Hi3921 chip.
The control data of the equipment end of the invention is required to be compatible with TCP/IP protocol, the equipment end is embedded with HT8621 and can be connected with the network end only through a power socket, and as a frequency division system is adopted between the high-speed network data and the control data, the signals are not mutually interfered, the communication is not interrupted to the greatest extent, and the channel capacity of the household power line can be utilized to the greatest extent through the frequency division system.
According to the invention, the PLC main node is connected to the high-speed power cat system through the network port, and the data of the equipment end of the sub-node below is uploaded to the Internet, so that the remote connection and control functions of the equipment are realized, and the PLC main node is used as a bridge for connecting the equipment and the Internet, is suitable for being placed on a home power supply trunk line, and can reduce the multi-channel loss to the minimum. The method is characterized in that a 'wired power cat' is necessary, the 'wired power cat' cannot serve as a master node, one key point of the method is frequency division carrier, and the PLC master node is used for collecting 2M-12M low-frequency data, integrating and summarizing the data to the power cat through an Ethernet port. The electric cat belongs to a 12-86M high-frequency band and is used for high-speed data transmission.
The invention also has a corresponding scheme for coping with data transmission among different voltage classes, like the emerging photovoltaic power generation field, the power generated by a photovoltaic panel is direct current, the common commercial power is alternating current 220V, and a special module is needed for communication conversion between the photovoltaic panel and the alternating current 220V.
As shown in fig. 3, the core element of the voltage conversion module is a three-coil 1:1:1 transformer module, the inductance of the module is 10uH, the three coils can be respectively connected with the PA output end of the chip, 220V alternating current and the photovoltaic bus, and through isolation of the transformer, signals pass through the band-pass filter circuit, and data can be transmitted at three ends. As shown in fig. 4, pins 1-2 are used to connect a photovoltaic side 400V or other high voltage level; the pins 3-4 are used for connecting 220V of mains supply or a photovoltaic low-voltage side; pins 5-6 are used for connecting with the output end of the carrier chip PA.
As shown in fig. 5, in some embodiments, a carrier communication system across voltage levels may include three parts, such as: an air conditioner inner unit, an air conditioner outer unit and an energy storage battery; the carrier module provided on the right side of each part can be respectively compared with the PLC sub-node in the figure I. The air conditioner internal unit adopts safe low-voltage power supply, and the external unit and the energy storage use high-efficiency high-voltage power supply. In order to meet the carrier communication among the three parts, a carrier module on an air conditioner external unit needs to use the carrier communication with a cross voltage level; the DC/DC module on the air conditioner external unit is a voltage conversion module, and three coils of the module are respectively connected with energy storage, the external unit and communication among the internal units. The scheme shown in the figure is only one application scenario of the module, and is not limited thereto.
It is to be understood that the same or similar parts in the above embodiments may be referred to each other, and that in some embodiments, the same or similar parts in other embodiments may be referred to.
It should be noted that in the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present application, unless otherwise indicated, the meaning of "plurality" means at least two.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.
Claims (9)
1. A carrier communication system, comprising: a power communication master device, a power communication slave device, a power communication master node, and a power communication child node;
the power communication master equipment and the power communication slave equipment are respectively connected with a power line and communicate in a power line carrier communication mode; the power communication master device is used for accessing a communication network;
the power communication master node is in communication connection with the power communication slave equipment;
the power communication sub-node is connected with the power communication main node through a power line, and the power communication sub-node and the power communication main node are communicated through a power line carrier communication mode;
the power communication sub-node is used for being in communication connection with the controlled equipment, and the power communication slave equipment is used for being in communication connection with the master control equipment;
the system also comprises a voltage conversion module; the voltage conversion module comprises a three-coil 1:1:1 transformer, and three coils of the transformer are respectively connected with the power communication sub-node, the power line and the direct current load;
wherein the direct current load is a photovoltaic panel; the three coils of the transformer are respectively connected with the power communication sub-node, a power line and light Fu Muxian; the photovoltaic bus is connected with the photovoltaic panel.
2. The system of claim 1, wherein the power communication master device is a power cat; the power communication main equipment is connected with the router through a network port and is used for accessing a communication network; wherein the communication network is a local area network, a wide area network, or a combination of both.
3. The system of claim 1, wherein the power communication slave device comprises a first power cat and a second power cat;
the first power modem is used for being in communication connection with the power communication main node;
the second power cat is used for being in communication connection with the main control equipment.
4. The system of claim 3, wherein the first power cat is a wired power cat, the first power cat being communicatively coupled to the power communication master node via a portal;
the second electric power cat is a wireless electric power cat and/or a double-frequency electric power cat, and the second electric power cat is in wireless communication connection with the main control equipment.
5. The system of claim 1, wherein the power communication master node is a PLC master node; the power communication sub-node is a PLC sub-node, and the PLC sub-node is in communication connection with the controlled equipment through a Uart interface.
6. The system of any one of claims 1-5, wherein the master device is a smart computing device; the controlled device is an intelligent household appliance.
7. The system of claim 6, wherein the master device comprises at least one of: camera, computer, smart phone, tablet computer;
the controlled device includes at least one of: air conditioner, fan, electric rice cooker.
8. The system of any one of claims 1-5, wherein the power communication master node is configured to collect 2M-12M low-band data, and aggregate the data to the power communication master device via the power communication slave device after integration.
9. The system of any of claims 1-5, wherein the power communication slave device is configured to collect 12-86M high band data.
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| CN202210124446.XA CN114598355B (en) | 2022-02-10 | 2022-02-10 | Carrier communication system |
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| CN202210124446.XA CN114598355B (en) | 2022-02-10 | 2022-02-10 | Carrier communication system |
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| CN114598355B true CN114598355B (en) | 2023-05-23 |
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| CN1556623A (en) * | 2003-12-31 | 2004-12-22 | 中国电力科学研究院 | Intelligent community and intelligent domestic automation system based on full electric power line and method |
| JP2007053705A (en) * | 2005-08-19 | 2007-03-01 | Matsushita Electric Works Ltd | Coupler for power line communication |
| EP1770870B1 (en) * | 2005-10-03 | 2019-04-03 | Avago Technologies International Sales Pte. Limited | Powerline communication device and method |
| JP4682909B2 (en) * | 2006-04-25 | 2011-05-11 | パナソニック電工株式会社 | Power line carrier communication equipment |
| CN103078406B (en) * | 2013-01-08 | 2015-04-22 | 东北大学 | Power-grid-based power strip control system and method |
| CN103414496A (en) * | 2013-08-02 | 2013-11-27 | 华为技术有限公司 | Power line communication method, central control device, terminals and power line communication system |
| CN106027346A (en) * | 2016-07-11 | 2016-10-12 | 南京航空航天大学 | Indoor electric appliance management system and control method thereof |
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| CN101949565A (en) * | 2010-09-28 | 2011-01-19 | 欧国勇 | Solar semiconductor air conditioner |
| CN103280827A (en) * | 2013-04-24 | 2013-09-04 | 广东志高空调有限公司 | Control system used for hybrid electric power room air conditioner, and control method thereof |
| CN106656270A (en) * | 2016-11-18 | 2017-05-10 | 珠海慧信微电子有限公司 | Photovoltaic multi-connected air conditioner carrier communication coupled transmission method and carrier communication coupled transmission circuit |
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