Background technology
Along with computer technology, fast development of information technology and extensive use, intelligent control technology and computer networking technology have obtained huge progress, the integrated application that each weak electricity system in the intelligent construction is set up on computer network platform becomes the inexorable trend of intelligent building weak electricity system technical development gradually.
Early 1980s, along with the appearance of the household electrical appliance of a large amount of employing electronic technology, (Home Electronics's dwelling house electronization HE) arises at the historic moment.Abroad to the research of Smart Home early, formed the ripe network standard such as X-10, CEBus, LonWorks, Smart House, and designed simple home automation network.There are many professional production manufacturer and distribution bodies that the Smart Home product is provided in America and Europe, Japan, Singapore, Korea S, the troop of producer of periphery product and outfit product is then more huge, some esbablished corporations such as IBM, CISCO, Siemens, Samsung, Microsoft, Sony, Panasonic join in this field very early, product category is various, and the technical standard of Cai Yonging also is not quite similar separately, in recent years, some products technical elements developed comparative maturity.
In view of the actual national conditions of China, domestic Smart Home technology and intelligent residential district synchronized development, it both can become the part of intelligent residential district, also can take independent mode of installing to realize the Smart Home of each family is controlled.At first, in 1994, the multimedia computer of by name " ten thousand intelligence " that a tame Singapore company sells at home can be rated as the blank of domestic first intelligent appliance.Subsequently, by 1998, Microsoft company released sensational " Venus " plan, makes Smart Home obtain conceptual breakthrough at home, has greatly promoted the development of domestic information industry.And then, in March, 1999, domestic Kai Si group has formally issued the Hopen embedded OS to the external world, and the Hopen industrialization is advanced tactful called after " Chinese mythology goddess plan ".This plan is a target with information household appliances, is basic platform with Hopen, and chip joint design and manufacturer, appliance manufacturers, software developer, information service firm and information operator advance the development of Smart Home technology jointly.In recent years, the quantity of the Smart Home manufacturer of domestic specialty is also in continuous growth, and stand-alone development is wherein arranged, and also introduction of foreign technology arranged and produces at home with integrated.Many hit products have wherein appearred, as the easy front yard automated system at home of EnjoinSmart, the Treasureway boccaccio house intelligentized system of introducing Singapore's technology, the scientific and technological home network Based Intelligent Control data terminal of researching and developing in Shanghai Communications University, Shenzhen etc.
At present both at home and abroad the communication media that adopts of intelligent home network product mainly contains three classes: wireless, twisted-pair feeder and power line.Theoretically, wireless solution is wherein the most tempting, because it does not need family is done rewiring, and is suitable for moving of equipment in the room.But because this technology full maturity not, rarely found in the Smart Home abroad, add at present centralized controls of adopting more, cost is also than higher, in addition, live in for a long time tens of MHz to the number GHz stronger electromagnetic field in bigger to health effects, so wireless solution has been promoted certain difficulty in industry.
What application was maximum at present is to adopt twisted-pair feeder to make the full distributed system of transmission medium, and its transmission rate is higher, dependable performance, and cost is also lower.Its main weak point is to need to lay 2-4 root twisted-pair feeder in addition, so is fit to be applied in the newly-built household, but needing in a large number to be not suitable for the existing building of intellectualized reconstruction.On the market in seen this series products, part and external similar products compatibility (as EIB, CEBus etc.); Another part is some companies oneself exploitations, but technology is not very improved and compatibility is relatively poor, also needs just can be applicable through the application verification of long period.
The power application line is done the fewer of transmission medium in Smart Home at present, and this mainly contains the reason of several aspects: 1) poor reliability.The developer has little understanding to the propagation characteristic of power line, and development or the product poor anti jamming capability of producing can not realize reliable transmission; 2) transmission rate is low.The speed of the power line carrier communication equipment of Shi Yonging is lower in the market, the highest only 1200bps, and what have has only tens bps, can not satisfy the requirement of family information real time implementation control; 3) do not possess the networking capability of household internal, can not make up the local area network (LAN) of household internal, do not satisfy now and following people to the home intelligent network requirements on Construction.
From the actual needs aspect, it is in order to enjoy more comfortable facility, safer life that people have intelligent domestic system.Therefore, intelligent domestic system not only will have characteristics such as flexible for installation, easy to use, also should provide more such as the INTERNET of resident family insert, functions such as control automatically, security protection, amusement, shopping online, tele-medicine, remote online education, and should realize the household management of sub-district.From the construction cost aspect, its design of universalness demand for development of intelligent residential district and intelligent domestic system will be towards low-cost, high performance target.For the installation merchant of intelligent domestic system, more should taking into account system whether be easy to install, whether need to revise the existing house of user living environment, whether need extra wiring, problem such as the complexity of wiring is how, and wiring is whether reliable.
From foregoing description as can be known, also do not develop in the prior art the combining of existing power line network in residential quarters and each family and ICT (information and communication technology), thereby realize system that whole residential quarters and each family are carried out comprehensive intelligent household and intelligent residential district control and manage.
Embodiment
Below with reference to Fig. 1 the intelligent residential district and the Smart Home automated system based on full power line of utility model are described in detail.
As shown in Figure 1, the designed home furnishings intelligent management system of the utility model is based upon on the power line broadband access network network platform of sub-district, utilizes the existing power spider lines that the network that carries out transfer of data is carried out networking.Is unit in view of China's living circumstance is many with the sub-district, so in the present embodiment, intelligent residential district of being developed and Smart Home automated system mainly are to be made of a plurality of family digital networks 3 (among the figure one of them only being shown, promptly corresponding with N resident family digital network), sub-district power line access network 2, control and management center, sub-district control centre 1.Family digital network 3 is to be the centralized control system of core with the control terminal HCT of family (Home ControlTerminal) 6, finishes data acquisition and the control of the various transducers of household internal, table being taken into account information communication devices such as controller by it.The transfer of data of family digital network 3 is utilized the configuration of existing power line fully, adopts the communication mode of low voltage power line carrier.Sub-district power line access network 2 is the intermediary's communication networks that carry out information exchange between control and management center, sub-district 1 and each family digital network 3.In the present embodiment, control and management center, sub-district 1 is based on the information platform of Ethernet, the system configuration that adopts C/S (client/server) to combine with B/S (browser/server), it is mainly by the sub-district control and the administrative unit 10 that include center management server, Control work station (not shown), and the Internet access network router HUB 13 compositions, thereby finish the intellectuality of whole sub-district dwelling house is controlled and management.
Shown in Figure 1 based on full power line the intelligent residential district and the Smart Home automated system in have two power line communication networks: one is the power line broadband access network, i.e. sub-district power line access network 2; Another is an indoor power line Smart Home communication network, and promptly the family digital network 3.Sub-district power line access network 2 is finished the broadband access of sub-district, realization is carried out purpose by power line communications by the wall power sockets of household internal, and finish between each family digital network 3 and each family digital network 3 and control and management center, sub-district 1 between communicate by letter and information exchange.It is the communication and the networking function of unit that each family digital network 3 is finished in the Smart Home automated system with the family, for the Smart Home automated system provides communication support.
Sub-district power line broadband access network 2 is played the part of the role of dwelling house access network in based on the intelligent residential district of full power line and Smart Home automated system at the utility model, each family digital network 3 and control and management center, sub-district 1 and and external network 4 between information exchange all undertaken by this sub-district power line broadband access network 2.
Introduce of the present utility model in detail based on the intelligent residential district of full power line and the specific implementation of Smart Home automated system below in conjunction with Fig. 1.Mode with partial enlarged drawing among Fig. 1 shows the situation that system of the present utility model realizes in the family of a wherein resident family (N resident family) of sub-district, wherein represent power line with heavy line, and with fine line representative data order wire (be ethernet line in this embodiment, certainly also can take the data telecommunication line of other types according to actual needs).As shown in Figure 1, a HCT is installed in each man of resident family, every is distributed fixed IP addresses (only showing a HCT6 who installs among the figure in man of N resident family).All output type equipment of household internal, as alarm detector (as cigarette sense alarm module), the button of seeking help (as emergency button), electronic type pulse meter (as ammeter, water meter etc.), their signal I/O mouth all is connected to identical power line carrier communication equipment (PLC), promptly " slave station " module (not shown) is used for converting the pulse signal that each output type equipment is exported to can transmit carrier signal on power line.This carrier signal is transferred to the power line carrier communication equipment (PLC) that is embedded among the HCT 6 by the indoor power line circuit then, i.e. " main website " module (not shown), and HCT 6 just can collect the signal of uploading from each output type equipment like this.Adopt same connected mode, imported equipment in the family also is couple to HCT 6 as warning lamp alarm bell etc., and can be carried out switch control by the peripheral hardware keyboard of HCT 6, also can carry out Long-distance Control, thereby realize deploying troops on garrison duty, withdraw a garrison, operations such as inquiry, household electrical appliance control by phone or the Internet.
The ustomer premises access equipment high speed PLC 5 that connects sub-district power line access network 2 at the output port of HCT 6 network interfaces, its transmission rate is 14Mbps (also can for 2Mbps or 45Mbps etc., according to the transmission rate that it is concrete is determined in the requirement of sub-district Based Intelligent Control and the factors such as network environment of sub-district intelligent control network).Correspondingly, also connect a ustomer premises access equipment high speed PLC 8 on the Internet access network router HUB 13 in control and management center, sub-district 1 with sub-district power line access network 2 of same transmission rate, like this, by sub-district power line access network 2, intercommunication mutually between the family digital network 3 that can realize each resident family and the control and management center, sub-district 1, thus make up the sub-district internal lan.Certainly, the transmission rate of high speed PLC 5 and high speed PCL 8 also can be different, as long as both can cooperate realization desired intelligent residential district of the utility model and Smart Home to control desired communication function.
In addition, by the Internet access network router HUB 13, control and management center, sub-district 1 and Internet 4 and other Control Network are (as the EMS of power department, public phone network etc., not shown) couple, can make the family digital network 3 of sub-district power line access network 2 and each resident family become the part of social wide area network, like this, anyone can arbitrarily inquire about the inside and outside various information of own family anywhere or any time, and household equipment is carried out control and management.As shown in Figure 1, sub-district distribution transforming switch cubicle 21 is responsible for the configuration of sub-district power circuit.Because this is to belong in the prior art very mature technique, so do not repeat them here.Control and management unit 10, sub-district to the performance requirement of the Control Server that it was equipped with than higher, the preferred industrial computer that adopts is as Control Server, because make it as central server, the operational management Control Software, deposit data is on database server, to realize configuration and the management of sub-district to the HCT 6 in all men of resident family.Certainly, require not really high occasion, also can select to adopt commercialization even senior home computer, can reduce cost like this as described Control Server in some real-time and accuracy to cell management and control.
In the present embodiment, described slave station module and master station module adopt power line low speed carrier communication equipment, i.e. low speed PLC.The slave station module application low speed information communication device that the data information exchange amount is less in each family, required communication rate is not high as low speed PLC, for example, emergency button (as distress call equipment), coal gas cigarette sense alarm module, washing machine, household electrical appliance such as water heater.For the high speed information communication equipment that data information exchange amount in each family is big, required communication rate is high, for example, carry out the personal computer of function of surfing the Net, video request program, video monitor (as the real time monitoring that is undertaken by video camera etc.) etc., its each can be couple to described sub-district power line access network 2 by the other high speed PLC (not shown) different and realize high speed communication functions such as online with described ustomer premises access equipment PLC 5.In addition, these high speeds PLC also can by modes such as phone, XDSL, CABLE, WLAN (wireless local area network), GSM realize each with it corresponding high speed information communication equipment information exchange functions (these high-speed communication technology all be develop in the prior art the content of comparative maturity, therefore its specific implementation is repeated no more).So, intelligent residential district and intelligent home control system based on power line of the present utility model both can have been taked power line low speed carrier communication networking mode or power line high speed carrier communication networking mode respectively, also these two kinds of networking modes can be combined to realize the mixed networking mode.
Bear analog acquisition, pulsed quantity collection and switch acquisition or the network data switching task of system as each low speed PLC of above-mentioned master station module and slave station module.In low speed information communication devices such as the indoor temperature controller of resident family, water logging controller, install acquisition module (not shown) and low speed PLC additional (promptly, the slave station module), both integrate, and carry out analog acquisition and conversion under the control of a single-chip microcomputer (not shown).Then, by the analog quantity of corresponding transducer input (for example, current value 4~20mA) is converted to level signal through described acquisition module, and write digital frame by single-chip microcomputer with digital quantity 0,1, be converted to carrier signal through corresponding low speed PLC again, the power line by household internal sends to described master station module then.Master station module adopts similar principles, and the carrier signal that is received is demodulated digital frame, and deciphering is reduced to digital quantity and issues HCT 6.Four tables (water, electricity and gas hotlist) are made a copy for and are belonged to the pulsed quantity collection, so by its slave station module acquisition pulse amount separately, and the pulsed quantity of being gathered is converted to carrier signal sends to master station module among the HCT 6, master station module is reduced this pulsed quantity and be uploaded to HCT 6.All the other low speed information communication devices as door magnetic, window magnetic, emergency button, domestic electric appliances controller module, alarm bell warning lamp module etc., input or output and all belong to switch acquisition, so its operation principle and the above two are similar.Like this, by each slave station module and in HCT 6 the built-in low speed PLC that is used for household internal power line LAN (be master station module, not shown), promptly can realize the information exchange between each low speed information communication device of household internal, thereby can carry out Based Intelligent Control and management in the cell range each low speed information communication device.Simultaneously, realize to realize each low speed information communication device of household internal and control and management center, sub-district 1 by HCT 6 and power line access network 2, and even with writing to each other of outside other networks 4, thereby, can carry out intelligent telemonitoring and control automatically to the low speed information communication device in each family digital network 3 in the sub-district.For the high speed information communication equipment in each family, for example, personal computer, video camera etc., because the exchanges data amount was bigger when it carried out information communication,, its corresponding high speed PLC carries out exchanges data based on high speed PLC ICP/IP protocol, that have universal network interface so adopting.As mentioned above, because these high speed information communication equipments also can be by sub-district power line access network 2 and control and management center, sub-district 1, and even couple mutually with various external networks 4, therefore, can utilize intelligence control system of the present utility model that it is carried out intellectuality control in the cell range and long-range and management.Certainly, these high speed information communication equipments also can be realized its information exchange functions by modes such as phone well known in the prior art, XDSL, CABLE, WLAN (wireless local area network), GSM.
The described low speed PLC that adopts in the system of the present utility model preferably adopts the arrowband spread spectrum to realize reliable power line transfer of data.Wherein, because the bandwidth that data-signal takies is less, therefore in used frequency band, power line channel can be regarded the linear channel of approximate ideal fully as, so just can avoid the influence of one of main factor that influences the power line reliable transmission-selectivity of channel frequency.The employing of spread spectrum can reduce or eliminate the influence of impulse disturbances, background noise, thereby realizes reliable transfer of data.It will be understood by those skilled in the art that and also can adopt the wide-band spread spectrum technology to realize reliable power line transfer of data.In addition, the described high speed PLC that is adopted in the native system preferably adopts OFDM (OFDM) and channel coding technology, and the channel mac-layer protocol adopts improved time division multiplexing agreement.Utilize the OFDM technology that total available channel is divided into the subchannel of some smaller bandwidth, thereby nonlinear channel is divided into the channel with ideal frequency response characteristic, the transmission rate summation of subchannel promptly is the overall transmission rate of channel.The OFDM technology can be eliminated the intersymbol interference that time dispersive that selectivity of channel frequency causes brings, and eliminates the influence of channel multi-path transmission, avoids the influence of impulsive noise etc.Certainly, also can adopt other similar channel distribution technology, TDM (time-division modulation) for example, CDMA (code division multiple access) etc.In addition, utilize follow-on channel agreement data that network transmits can be carried out priority and divide, guarantee the transmission requirement of real-time data.
In the present embodiment, though described high speed PLC 5 and described HCT 6 separate configuration,, also high speed PLC 5 can be integrated among the described HCT 6.In addition, the master station module that is used for household internal power line local area network communication built-in in HCT 6 adopts low speed PLC, its message transmission rate is low, no network interface, be used for transmission command or packet etc., can satisfy the communicating requirement between each family digital network 3 inner each information communication device fully.Because it is cheap, so be the preferred unit that each low speed information communication device of household internal is realized information communication.Certainly, those skilled in the art understand, and also can adopt the power line carrier communication equipment of other types to realize the data communication of household internal.
In the system of present embodiment, described low speed PLC, high speed PLC and power line access network 2 adopt different frequency ranges respectively.The frequency range of low speed PLC is 10-100KHz, and the frequency range of high speed PLC is 300KHz-1.5MHz, and the frequency range of power line access network 2 is 2MHz-30MHz.
By above-mentioned detailed description as can be seen, compare, the utlity model has following characteristics with domestic and international similar technology:
1) internal network of intelligent domestic system and external network all adopt power line as communication media.
2) each family digital network has flexibility, both can adopt power line low-speed communication network, also can adopt electric power high-speed line communication network, also can mix use.
3) network configuration can be the concentrating structure of bus type, also can be based on the network configuration of TCP/IP.
4) both can carry out information exchange between family digital network and the control and management center, sub-district, and realize monitoring and control, also can realize information exchange by modes such as phone, XDSL, CABLE, WLAN (wireless local area network), GSM by the power line broadband access system.
5) have that cell monitoring, safety guard, three tables are copied and accepted, functions such as online, remote image monitoring, tele-medicine, long-distance education, household electrical appliances and indoor environment monitoring and danger button warning, SMS alarm, remote alarms, and sub-district electricity consumption, water can be provided, detect and the forecast analysis function with gas and heating installation load.
Smart Home automation and power line carrier communication are two flourish brand-new subjects.Along with the development of power-line carrier communication, the particularly development of power line high-speed communication technology and maturation are introduced the Smart Home field with power-line carrier communication and will and be popularized and play positive impetus the development of Smart Home.The utility model combines the latest development of above-mentioned two subjects just, provide a kind of based on low-voltage network, full power line medium, collection Internet visit, table meter are copied and accepted, home environment monitoring, sub-district safety are deployed troops on garrison duty, one is served in tame electric control, digitization community intelligent residential district and Smart Home automated system provide a kind of new total solution for power line communication technology and intelligent residential district and household automation system in conjunction with using.
In the design of whole system, the power line communication technology of having applied in a flexible way, proposed based on full power line innovatively, the total solution of combined with intelligent cell management system and Smart Home automated system, realized the integrated application of high speed power line communication technology and intelligent domestic system, well power-line carrier communication and wired home control are combined, make whole system multiple functional, form more perfect Based Intelligent Control system, thereby expanded the unify application of power line communication technology of intelligent residential district and Smart Home Department of Automation more widely.
Though the utility model is described in detail above in conjunction with a specific embodiment,, as understood by one of ordinary skill in the art, the utility model is not subjected to the restriction of the details of the foregoing description and each component part thereof.Under the prerequisite that does not deviate from basic principle of the present utility model and spirit, those skilled in the art can also make various changes and distortion to the foregoing description.In a word, protection range of the present utility model is only stated by attached claim and is limited.