CN103475575A - PLC-based intelligent household gateway apparatus - Google Patents
PLC-based intelligent household gateway apparatus Download PDFInfo
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Abstract
The invention discloses a PLC (power line communication)-based intelligent household gateway apparatus which comprises a master control unit, a memory unit, an interaction unit, a broadband PLC module, a narrowband PLC module and a power supply module. The intelligent household gateway has the advantages that demands for transmission rate and the bandwidth of both an indoor network and an outdoor network are asymmetrical: indoor control intelligent plugs, household electrical appliances and sensor apparatuses have very small data volume yet many nodes, require low cost and low power consumption, and the narrowband PLC technology satisfies such demands; and outdoor communication requires channels with high bandwidth and high transmission rate, and compared with conventional communication methods such as optical fibers and ADSL, the PLC-based intelligent household gateway apparatus can make full use of existing electric power lines for communication without laying pipes and lines again, and thus helps to substantially save cost.
Description
Technical field
The invention belongs to the telecommunications field, relate in particular to a kind of intelligent home gateway based on PLC.
Background technology
1), PLC---is the abbreviation of English Power line Communication.Electric line carrier communication refers to and utilizes existing power line, by carrier system, the analog or digital signal carried out to the technology of Internet Transmission.Live wire is characterized in not needing again setting up network, as long as just can carry out transfer of data.
Power line carrier communication (PLC) technology comes across the '20s initial stage of twentieth century, and it usings power line as transmission medium, utilizes carrier system that the analog or digital signal is become to high-frequency signal, by power line, realizes long-distance transmissions.It has long transmission distance, channel reliability is high, level security good, small investment instant effect, the advantage such as synchronize with power grid construction, becomes already the most widely used communication mode of electric power system.It is mainly used in dispatching of power netwoks communication, multiplexing telemechanical, carrier current protection and remote tripping signal etc.Low voltage power line carrier starts from eighties of last century eighties in China, carried out a large amount of research before and after 1998,1998～2003 in the various places pilot phase, develop slower, development to some extent after 2003, application is promoted gradually, and after 2006, demand greatly expands, peak period in the power line carrier development, be mainly used in the electronic electric energy meter remote automatic meter reading now.Also one of information access mode using it as home network of the demand in market in the last few years.
PLC has different mode classifications, generally can be classified according to several different modes such as acquisition frequency bandwidth, traffic rate and application scenarios.
1.. from acquisition frequency band wide angle, PLC can be divided into arrowband PLC (NB-PLC) and broadband P LC (BB-PLC), and the reference carrier frequency of PLC is different in country variant, different regions.
2.. from the traffic rate of realizing, PLC can be divided into low speed PLC (LS-PLC) and high speed PLC (HS-PLC), generally take the 2Mb/s linear speed as line of demarcation.Usually, arrowband PLC is equal to low speed PLC, and broadband P LC is equal to high speed PLC.
3., from application scenario, broadband power line carrier is mainly used in video etc. and requires the occasion that transmission rate is higher, and the arrowband power line carrier technology is mainly used in the Internet of Things application scenarios such as family, office.
2), OFDM----(Orthogonal Frequency Division Multiplexing, OFDM technology), it is a kind of multi-carrier modulation technology.Its main thought is: channel is divided into to some orthogonal sub-channels, converts high-speed data signal to parallel low speed sub data flow, be modulated on every sub-channels and transmitted.Orthogonal signalling can separately, can be reduced like this phase mutual interference ICI between subchannel by adopt correlation technique at receiving terminal.Signal bandwidth on every sub-channels is less than the correlation bandwidth of channel, and therefore the flatness of can regarding as on every sub-channels declines, thereby can eliminate intersymbol interference.And, because the bandwidth of every sub-channels is only the sub-fraction of former channel width, it is relatively easy that channel equalization becomes.
The current domestic chip of the power line carrier for powerline remote meter reading, manufacturer is based on the FSK/BPSK technological development more, and will just there will be very large problem as the information access application of home network, can be directed at transmission rate slow, communication efficiency is low, and control ability is poor.Up-to-date technology is to adopt OFDM (Orthogonal Frequency Division Multiplexing at present, the OFDM technology), it is a kind of multi-carrier modulation technology, the plurality of advantages such as have high speed, noise resistance, transmission range is long, coverage rate is high is just to start in recent years commercial a kind of emerging power line carrier technology.The OFDM technology has reliable mode of operation, efficient channel coding technology and powerful mechanism for correcting errors, is safe, the most cost-effective communication pattern of current intelligent grid.At present, the PLC standard based on the OFDM technology is not yet unified, be divided into a lot of camps, but technical development is very fast.Wideband transmit speed reaches 200Mbps, and the narrow-band high-speed transmission rate also can reach 100kbps.
3), intelligent power and Smart Home
Household intelligent gateway is to realize home network and the interconnected key technology of external public network.It mainly completes conversion and information sharing between the various different communication protocol of household internal network, and with the data exchanging function between external communication network, general management and the control of also being responsible for home intelligent equipment of this gateway simultaneously.Can carry out CSRC and remote monitoring to the household electrical appliance in the household internal network, smart machine etc. by Household intelligent gateway, can monitor the Electrical Safety situation in family whenever and wherever possible, can automatic alarm etc.People can also by use Household intelligent gateway to water, electricity, gas meter gather automatically and copy and accept, clearing etc.
Intelligent home gateway equipment does not in the market also adopt home intelligent device or the gateway of the asymmetric like this communication mode of power line carrier technology of two kinds of different bandwidths and different transmission rates.They are general, and the technological means adopted is all that ADSL or optical fiber are accessed, and indoor employing comprehensive wiring or communication also have the traditional power line carrier of simple local employing to carry out networking.
Because intelligent appliance and communication equipment more and more enter family, adopt ADSL or optical fiber to carry out the indoor comprehensive wiring, need to carry out detailed wires design before finishing for newly-built family, for the family of having come into operation, need the transformation of connecting up.Though radio communication device is without rewiring, take brick mix structure for China and for main residential building, often can cause wall to intercept, communicate by letter not smooth.The advantage of the maximum of utilizing power line carrier technology to communicate is to lay the private communication line, can utilize the immanent power line network of household internal to realize the immanent thing connection world, can adjust the node location of communication whenever and wherever possible.Especially in old residential quarter, realize that intelligentized family does not need to carry out the internal network transformation, plug and embed the needs that the intelligent terminal that power line carrier module is arranged can be realized Control on Communication.Along with the progress of technology, the extensive use of arrowband of new generation or the broadband high speed power line carrier chip based on the OFDM technology, the technological deficiency of former power line carrier all is resolved.Its comprehensive cost performance is relatively wireless and the advantage of comprehensive wiring is obvious especially.
The advantage of broadband power line carrier communication is that its transmission rate is higher, especially adopts its transmission rate of carrier chip of OFDM technology modulation can reach 200Mbps, can meet the transmission needs of big data quantity, is applied to family's access most suitable; And the arrowband power line carrier technology based on the OFDM technology is lower with respect to its chip cost of broadband, power consumption is also low, and its transmission range is also far away in addition, and networking capability is stronger, relatively is applicable to being applied to indoor networking and applies as Internet of things node.Integrated being applied on Intelligent home gateway equipment of the power line communication mode of these two kinds of technology will be realized to effective and the most most economical communication mode.
Traditional communication modes that current resident family is used, can not meet intelligent appliance growing with wisdom family communicate by letter, the needs of management, Long-distance Control, the invention provides a kind of intelligent home gateway that all kinds of families are used that is suitable for, be applied on a device product by the system module broadband power line carrier communication and two kinds of different technologies of arrowband power line carrier communication, different transmission rates, realize and solve the inside and outside transmission bandwidth occasion different with rate requirement in family or like environment.Transmission and the service of the internet datas such as the broadband power line carrier communications applications is in the up access communications passage required with a large bandwidth and at a high rate, the carrying audio frequency and video and other home intelligent terminal image data, control information stream; The arrowband power line carrier is applied to the Internet of things node collection of indoor communications passage medium and low frequency, low rate, transmission and the service of control data message stream.
Intelligent terminal management system based on PLC comprises the parts such as home gateway, smart jack, household electrical appliance.Both can realize bearer service on gateway is managed for configuration, also can carry out to household electrical appliance status poll, control and management, parameter configuration and the software upgrading of Local or Remote.
Summary of the invention
The object of the present invention is to provide a kind of intelligent home gateway based on PLC, be intended to solve traditional communication modes that resident family is used, can not meet intelligent appliance growing with wisdom family communicate by letter, the problem of the needs of management, Long-distance Control.
The present invention realizes like this, a kind of intelligent home gateway based on PLC, possess Smart Home and control hinge and the large function of wireless routing two, realize its two-way communication by embedding broadband power line carrier module and these two kinds of asymmetrical communication modes of arrowband power line carrier module, realize intelligent power management, Smart Home management and the network insertion relay function of family or working environment, can be responsible for concrete security alarm, family's electric control, power information collection, by products such as wireless mode and smart-interactive terminals, carry out data interaction.It also possesses wireless routing function, but mobile phone, PAD, plurality of devices by its all easily logging onto the Internet, control the electrical equipment in family.
Intelligent home gateway provided by the invention, be comprised of main control module, memory cell, interactive unit, broadband P LC module, arrowband PLC module, power module.
Memory cell, interactive unit, broadband P LC module, arrowband PLC module only are connected with main control module, and power module provides energy source and power for all hardware.
Main control module, be mainly partly to form with embedded ARM processor and data/address bus, address bus, clock etc., is used for carrying out calculating, the control of data;
Memory cell, be mainly to form with Flash storage and random access memory ram, is mainly deposit operation system kernel and other business datums;
Interactive unit, comprise and take touch-screen as main demonstration and input/output section function;
The broadband P lc unit is mainly the communication of carrying out family's outer network up channel;
PLC unit, arrowband is mainly the communication of carrying out LAN down channel in family;
Power module, provide the electric power support to above various piece unit.
Further, main control module is communicated by letter with the broadband P lc unit, except can communicating by the TCP/IP mode of netting twine, can also be connected by USB or bus mode.
Further, main control module is communicated by letter with PLC unit, arrowband, except can communicating with UART serial ports (comprising RS485, RS232), can also be connected by modes such as TCP/IP, buses.
Intelligent home gateway advantage provided by the invention is, speed and bandwidth requirement to indoor net and outdoor Internet Transmission are asymmetrical, the control amount of communication data of indoor control smart jack, household appliances, sensing device is very little, but node is many, require low cost and low-power consumption, arrowband PLC technology can meet this type of demand; Outdoor communication is high with regard to the demand bandwidth, and the passage that transmission rate is high is compared with traditional communication modes such as optical fiber, ADSL and can be taken full advantage of existing power circuit and communicate, and pipeline installation, have very large saving on cost again.
The accompanying drawing explanation
Fig. 1 is the topology diagram of intelligent home gateway provided by the invention;
Fig. 2 is the external communication structure figure of intelligent home gateway provided by the invention;
Fig. 3 is intelligent terminal structural representation provided by the invention.
embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
The present invention realizes like this, a kind of intelligent home gateway based on PLC, realize its two-way communication by embedding broadband power line carrier module and these two kinds of asymmetrical communication modes of arrowband power line carrier module, realize intelligent power management, Smart Home management and the network insertion relay function of family or working environment.
A kind of intelligent home gateway, its detailed construction as shown in Figure 1, comprises main control module, memory cell, interactive unit, broadband P LC module, arrowband PLC module, power module six parts;
Memory cell, interactive unit, broadband P LC module, arrowband PLC module only are connected with main control module, and power module provides energy source and power for all hardware;
Main control module is mainly partly to form with embedded ARM processor and data/address bus, address bus, clock etc., is used for carrying out calculating, the control of data;
Memory cell is mainly to form with Flash storage and random access memory ram, is mainly deposit operation system kernel and other business datums;
Interactive unit comprises take touch-screen as main demonstration and input/output section function;
Broadband P lc unit function is by the row data communication of going forward side by side of the data conversion based on different agreement, be integrated with the chip that a power line carrier chip based on the OFDM technology is core on it, can carry out the ICP/IP protocol data and Home Plug AV normal data is changed and transmits, the broadband P lc unit is mainly to carry out the outer communication of family;
The place that PLC unit, arrowband is different from broadband P LC is its applied bandwidth difference, its transmission rate difference, and its standard of following is PRIME power line carrier communication standard, PLC unit, arrowband is mainly to carry out communication in family;
The above various piece of electric power source pair of module unit provides the electric power support.
1, the uplink communication of Household intelligent gateway completes by broadband P LC module, as shown in Figure 2;
Multi-carrier modulation technology is arranged on broadband P LC module based on OFDM, meet the broadband power line carrier chip of Home Plug AV standard, this chip has physical layer and surpasses the 200Mbps transmission rate.As the uplink communication unit of home gateway inside, this module communicates with ICP/IP protocol by network interface chip DM9000 and by netting twine and main control module by 10M/100M MII (IEEE802.3) interface on the broadband P LC chip on it; And broadband P LC chip will convert the data-signal that is applicable to power line carrier transmission to after the ICP/IP protocol processing data packets, and after peripheral circuit is processed, by coil, data coupling is transmitted to power line, the other end at channel has a same broadband P LC module to carry out reciprocal modulatedemodulate reconciliation process, finally by communication apparatus such as switch, routes, is forwarded on public network.
2, wireless routing function, the business datum that comprises data center from the signal of public network, internet data, the control data of customer mobile terminal etc., data switching exchane by the community end is connected to other intelligent terminals (as concentrator) that embed broadband P LC module, broadband P LC module converts Ethernet data to the data-signal that is applicable to power line carrier transmission, and be coupled on power line and transmitted, control signal converts the Ethernet data bag to again with the corresponding broadband P LC module that data-signal arrives home gateway inside, deposit internal memory in through data/address bus, trigger simultaneously and interrupt and to inform arm processor, processor calls and interrupts processing function, and shift data onto protocol stack by driver and resolved, and send data to the port of setting.
3, the downlink communication of Household intelligent gateway is responsible for by arrowband PLC module, as shown in Figure 2;
The narrow-band high-speed power line carrier chip that meets the PRIME standard based on the OFDM multi-carrier modulation technology is arranged on arrowband PLC module, and the transmission rate of this chip is more than 100Kbps.Downlink communication unit as home gateway inside, arrowband PLC module is by its UART (Universal Asynchronous Receiver/Transmitter, universal asynchronous receiving-transmitting) arm processor of interface and main control module carries out the signal data transmission, from the data-signal of main control module after narrowband carrier chip and peripheral circuit are processed, it is coupled on power line and is transmitted, the other end of section's power line channel should have a same arrowband PLC module to carry out reciprocal modulatedemodulate reconciliation process relatively within the family, complete communication function, and finally realize to the intelligent terminal as family's Internet of things node the communication control function as smart jack or household electrical appliance.
5, as shown in Figure 3, after passing through the intelligent home gateway aggregation process from the control command of interactive unit or outer net, by resolving, mail in this way the instruction of indoor each Internet of things node (as smart jack, embed the household electrical appliance of arrowband PLC module etc.), will carry out downlink transfer by the arrowband PLC module in home gateway; Home gateway can periodically gather the data of each indoor node, gatherer process is the instruction of by the application layer collecting thread, to processor UART mouth, sending image data, and converts the power line carrier signal after processing by arrowband PLC chip to and transmitted to the power line in family by coil coupling.
6, the main control module of home intelligent terminal be take embedded ARM processor as core, the embedded OSs such as Linux or Windows CE are installed, coordinate SDRAM and other functional parts such as Flash memory cell, power module, realize work such as the control signal from the family outside and the signal of uploading from the various intelligent terminals of household internal and sensor terminal and data analysis, calculating, relaying, storages.
7, home intelligent terminal adopts thisly has following characteristics based on the broadband and narrowband power-line carrier communication in conjunction with mode and the processing method of application: arrowband PLC module and broadband P LC module all need paired application; Integrated these two kinds of modules of difference in home gateway; Must integrated corresponding PLC module on other intelligent terminals of the other end of downstream and upstream channel correspondingly complete from power line and carry out modulation-demodulation signal and convert the work that needs signal to.
Further, main control module communicates by letter with the broadband P lc unit, except can communicating by the TCP/IP mode of netting twine, can also be connected by USB or bus mode.
Further, main control module is communicated by letter with PLC unit, arrowband, except can communicating with UART serial ports (comprising RS485, RS232), can also be connected by modes such as TCP/IP, buses.
Intelligent home gateway possesses Smart Home and controls hinge and the large function of wireless routing two, can be responsible for concrete security alarm, family's electric control, power information collection, by products such as wireless mode and smart-interactive terminals, carries out data interaction.It also possesses wireless routing function, but mobile phone, PAD, plurality of devices by its all easily logging onto the Internet, control the electrical equipment in family.The external communication mode of this intelligent home gateway is mainly realized by embedding broadband power line carrier module and these two kinds of asymmetrical communication modules of arrowband power line carrier module, this is the progress due to the carrier chip technology, a kind of brand-new communication mode brought, can solve the indeterminable problem of other communication mode in household or working environment intellectuality, networking.This intelligent home gateway can be realized home intelligent power management, Smart Home management and network insertion relay function.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. the intelligent home gateway based on PLC, is characterized in that, described intelligence dress home gateway comprises:
Main control module, be comprised of embedded type CPU and peripheral circuit, is responsible for calculating, analysis, the control of whole system;
Memory cell, for deposit operation system kernel and business datum, memory cell is connected with main control module;
Interactive unit, take touch-screen as main Presentation Function and the input/output function of communication data for providing, and interactive unit is connected with main control module;
Broadband P LC module, for carrying out external uplink communication, broadband P LC module is connected with main control module;
Arrowband PLC module, for carrying out internal downlink communication, arrowband PLC module is connected with main control module;
Power module, be connected with described main control module, memory cell, interactive unit, broadband P LC module, arrowband PLC module, for energy source and power is provided.
2. intelligent home gateway as claimed in claim 1, is characterized in that, described main control module is equipped with embedded ARM processor, and Linux or Windows CE embedded OS are installed.
3. intelligent home gateway as claimed in claim 1, is characterized in that, described broadband P LC module, and containing has based on the OFDM multi-carrier modulation technology, meets the broadband power line carrier chip of Home Plug AV standard; This module acp chip communicates by Ethernet protocol by 10M/100M MII interface and main control module, then is coupled on power line and is transmitted, and at the other end of channel, a same broadband P LC module is arranged.
4. intelligent home gateway as claimed in claim 1, it is characterized in that, described arrowband PLC module contains based on the OFDM multi-carrier modulation technology, meets the narrow-band high-speed power line carrier chip of PRIME standard, this module acp chip carries out the signal data transmission by UART interface and main control module, be coupled to again on power line, at the other end of channel, a same arrowband PLC module should be arranged relatively.
5. intelligent home gateway as claimed in claim 1, is characterized in that, described broadband P LC module all needs paired application, is integrated in all external communication positions; Must integrated corresponding broadband P LC module on other intelligent terminals of the other end of up channel.
6. intelligent home gateway as claimed in claim 1, is characterized in that, described arrowband PLC module needs application in pairs, and this module integration is at all internal communication positions; Must integrated corresponding arrowband PLC module on other intelligent terminals of the other end of down channel.
7. intelligent home gateway as claimed in claim 1, is characterized in that, described main control module is communicated by letter with the broadband P lc unit, except can communicating by the TCP/IP mode of netting twine, can also be connected by USB or bus mode.
8. intelligent home gateway as claimed in claim 1, is characterized in that, described main control module is communicated by letter with PLC unit, arrowband, except can communicating with the UART serial ports, can also be connected by TCP/IP, bus mode.
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| CN103888349A (en) * | 2014-04-18 | 2014-06-25 | 烽火通信科技股份有限公司 | Home gateway device with power line communication function |
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| CN107390535A (en) * | 2017-07-24 | 2017-11-24 | 浙江龙游公任电子有限公司 | A kind of two generation smart homes endowment system |
| CN109067692A (en) * | 2018-08-30 | 2018-12-21 | 东信和平科技股份有限公司 | A kind of OFDM power-line carrier communication system and its equipment cut-in method |
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| CN103888349B (en) * | 2014-04-18 | 2017-03-15 | 烽火通信科技股份有限公司 | A kind of family gateway equipment with electric lines of force communication function |
| CN103888349A (en) * | 2014-04-18 | 2014-06-25 | 烽火通信科技股份有限公司 | Home gateway device with power line communication function |
| WO2015176405A1 (en) * | 2014-05-21 | 2015-11-26 | 中兴通讯股份有限公司 | Smart home gateway |
| WO2016062027A1 (en) * | 2014-10-22 | 2016-04-28 | 中兴通讯股份有限公司 | Intelligent household appliance control method, device, and smart home system |
| CN105591850A (en) * | 2014-10-22 | 2016-05-18 | 中兴通讯股份有限公司 | Control method and apparatus for intelligent household appliance and intelligent household system |
| CN106325084A (en) * | 2015-06-25 | 2017-01-11 | 中兴通讯股份有限公司 | Intelligent home central controller, terminal, system and control method |
| CN104967467B (en) * | 2015-07-15 | 2018-06-05 | 佛山市蓝心科技有限公司 | Ethernet data exchange method and device on a kind of electric power cable |
| CN104967467A (en) * | 2015-07-15 | 2015-10-07 | 佛山市蓝心科技有限公司 | Ethernet data exchange method on electric power cable and apparatus |
| WO2017156837A1 (en) * | 2016-03-17 | 2017-09-21 | 瑞斯康微电子（深圳）有限公司 | Full-band power line carrier communication method |
| CN107302479A (en) * | 2017-06-27 | 2017-10-27 | 广州市威士丹利智能科技有限公司 | Intelligent home gateway based on various communications protocols |
| CN107390535A (en) * | 2017-07-24 | 2017-11-24 | 浙江龙游公任电子有限公司 | A kind of two generation smart homes endowment system |
| CN109067692A (en) * | 2018-08-30 | 2018-12-21 | 东信和平科技股份有限公司 | A kind of OFDM power-line carrier communication system and its equipment cut-in method |
| CN109981146A (en) * | 2019-04-18 | 2019-07-05 | 国网山东省电力公司菏泽供电公司 | Family's Internet of things system based on power line communication |
| CN109981146B (en) * | 2019-04-18 | 2021-09-24 | 国网山东省电力公司菏泽供电公司 | Family Internet of things system based on power line communication |
| CN110572185A (en) * | 2019-08-20 | 2019-12-13 | 武汉群岚电子有限责任公司 | intelligent household energy real-time detection device and method based on HPLC technology |
| CN110365562A (en) * | 2019-08-29 | 2019-10-22 | 青岛东软载波科技股份有限公司 | A kind of wisdom family interactive terminal based on HPLC communication with gateway function |
| CN110365562B (en) * | 2019-08-29 | 2021-12-31 | 青岛东软载波科技股份有限公司 | Smart home interaction terminal with gateway function based on HPLC communication |
| CN110868774A (en) * | 2019-12-02 | 2020-03-06 | 广东洲明节能科技有限公司 | Lighting device, gateway and lighting device control system |
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