CN1172486C - Intelligent domestic network controlling bus - Google Patents
Intelligent domestic network controlling bus Download PDFInfo
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- CN1172486C CN1172486C CNB021386463A CN02138646A CN1172486C CN 1172486 C CN1172486 C CN 1172486C CN B021386463 A CNB021386463 A CN B021386463A CN 02138646 A CN02138646 A CN 02138646A CN 1172486 C CN1172486 C CN 1172486C
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Abstract
The present invention relates to an intelligent domestic network control bus which belongs to the technical field of an intelligent control device of a digital community. The present invention is characterized in that a network controller M is used to control bus interfaces J1 and J2 so that the bus interfaces J1 and J2 are respectively connected with network interfaces P1 and P2 of all the nodes N; the total number of the nodes is 200; the network controller M is connected with at least one keyboard. The present invention has the advantages of simple, compact and reasonable structure, reliable performance, flexible function, low cost, simple installation, non-polarity, free topology and no need of a terminal device; the present invention adopts a time division protocol, and all the nodes are queried by turns; the present invention is stable and reliable and can not generate collision; system control is very flexible, and signal lines and power cords are multiplexed; besides, network buses are complete in free topology, and terminal matching is not needed.
Description
Technical field:
The present invention relates to a kind of intelligent home network control bus, belong to digitization community intelligence controlling device technical field.
Background technology:
In recent years, vigorously emerged in large numbers throughout the country various intelligentized residential quarters, and residential quarter intellectuality at present is mainly reflected in: resident family's indoor security strick precaution, cell management monitoring and automatic remote meter-reading function etc.Along with growth in the living standard, home automation is quietly risen in China, the home automation product that some are internationally famous, successively introduced as LonWorks, CEBus, X-10 etc., after this domestic home bus product that also released one after another, for example ESHA, JZK-A etc. respectively have characteristics, have formed the situation of letting a hundred schools contend.With regard to its structure following several types is arranged:
1. multiple-way system man chamber controller
The transducer of family's chamber controller and indoor configuration, alarm probe, controlled household electrical appliances etc. are direct-connected, node of every configuration needs the I/O mouth of slave controller to draw 2-3 root lead, all control programs all must leave in the memory of controller, node need not increase interface, can select the universal product for use.Used tame chamber controller nearly all is this series products in the domestic existing intelligent residential district at present.
The major defect of this quasi-controller is: if the node of indoor configuration is more than 20, the lead-out wire of controller may be more than 80, this brings very big difficulty will for the design and installation and the indoor wiring of controller, if the node number increases again, in fact be difficult to realize, reliability is difficult to guarantee, will cause the extreme difficulty of construction.Simultaneously, because the increase of I/O mouth, the expansion of controller function will cause the raising significantly of controller cost.So this series products only is applicable to low and middle-grade intelligent residential quarters.
2. family's control bus of power line carrier
This control bus is that signal carrier is transmitted in power line, the used power supply of node is also provided by power line, self-evident, the installation of node is very easily, do not need other wiring, as long as there is the place of supply socket can place node, especially more favourable for the transformation of old house, can not destroy original finishing.The power line carrier technology U.S. just has been used for home automation as far back as the seventies in 20th century, most representative at that time product is X-10, because its wiring is simple, easy for installation, flexible function, expansion are easy, accepted extensively and use by people, be only in existing more than 400 ten thousand families of the U.S. to 2000 and used this product.However, it still exists many shortcomings, and is slow as signaling rate, occurs " bottleneck " problem in the signals transmission easily; And signal is to be modulated on the power line, and power frequency is disturbed very important, and especially in China, the quality of powerline systems will more seriously influence interference free performance; Plug simultaneously a lot of node modules in supply socket, it is very inharmonic fitting up with the personalization of family.Though CEBus has done very big improvement at the shortcoming of X-10, transmission speed is brought up to 10KBPS, has solved " bottleneck " problem in the message transmission, improve anti-interference aspect and also taked measure, make moderate progress, but this is a cost to improve the interface price, because the valency height is seldom made inquiries by the user.Domestic JZK-A also adopts power line carrier technology, has above-mentioned shortcoming equally.
3.RS-485 family's control bus of interface
RS-485 has become one of standard communication interface that industry is most widely used as the electrical code of a kind of multiple spot, differential data transmission.This communication interface allows to carry out the multiple spot both-way communication on simple a pair of twisted-pair feeder.Have high noise inhibiting ability, higher data transmission rate and high reliability, and economical simply.
RS485 generally only recommends bus topology, and the node number is less, and holding wire is what to separate with power line, and bus output has polarity.So use in the environment few at the node number, that wiring distance is nearer.
4. field bus control system
LonWorks with U.S. Echelon company is representative, and its advantage is opening, interchangeability, dispersiveness, is defined as household network standards by EIA.Its shortcoming is: power line is to separate with holding wire, and it is multiplexing not resembling the power line carrier; Network topology has certain restriction, and branch can not be long, and the end at the whole story of network will add coupling etc.Most importantly cost an arm and a leg,, be difficult to enter average family because each node comprises a neuron (Neuron) chip.
Above-mentioned several network technology of home automation that is applicable to has his own strong points, but will enter Chinese common people family, all also has many problems to need to solve, and the product of real practicability phoenix feathers and unicorn horns especially, and alternative product is very limited.
Summary of the invention:
The objective of the invention is to overcome above-mentioned weak point, thereby a kind of simple in structure, dependable performance is provided; The complete free topology of energy need not terminal be mated; Holding wire and power line are multiplexing, flexible function, low-cost intelligent home network control bus.
Main solution of the present invention is achieved in that
It mainly adopts network controller M, input and output node N to form, and it is characterized in that on the network-bus interface J1 of network controller M, the network interface P1 and P2 that J2 links each node N respectively.
Controller M of the present invention is connected with node N by a pair of twisted-pair feeder, and it is 200 that its maximum nodes are counted N, and maximum communication distance is 200 meters, the complete free topology of its network-bus, need not terminal coupling, network-bus is multiplexing by signal data line and power line.Bus provides working power to each node simultaneously as the medium of communication that provides between controller M and the node.The power supply of each node is from obtaining with the bus of controller M communication, rather than the mains lighting supply line by alternating current 220V or other special circuit provide.
At least connect a keyboard on the network controller M of the present invention, keyboard makes network controller M enter programming.
Network-bus of the present invention adopts the tdm communication agreement, and message transmission rate is constant, is 20Kbps.
The signal that transmits on the bus of the present invention is 20 kilo hertzs a sine wave, the positive half cycle transmission signals of carrier wave, and the negative half period of carrier wave provides power supply.
Node N has input circuit and output loop simultaneously, and wherein input circuit can have switching value input, tandem data input and analog quantity input; Output loop has switching value output, tandem data output and pulse-width modulation output, and which kind of input/output state node N is in, and by 4 status number decisions, status word is programmable.
Compared with the prior art the present invention has the following advantages:
The present invention is simple in structure, compact, reasonable; Dependable performance, flexible function, low price is installed simple; Nonpolarity, free topology, do not need terminator cap; Adopt the timesharing agreement, each node of wheel continuous query; Reliable and stable, can not produce conflict; System's control is very flexible, and holding wire and power line are multiplexing.
Description of drawings:
Fig. 1 is a system configuration schematic diagram of the present invention;
Fig. 2 is a system works schematic diagram of the present invention;
Fig. 3 is a controller architecture schematic diagram of the present invention;
Fig. 4 is architecture logic figure of the present invention;
Fig. 5 is a node N principle logic diagram:
Fig. 6 is the present invention's principle logic diagram of programming;
Fig. 7 is coded pulse figure of the present invention;
Fig. 8 is bus data bag 8 bit data structure charts of the present invention;
Fig. 9 is bus data bag 12 bit data structure charts of the present invention;
Figure 10 is bus data bag 16 bit data structure charts of the present invention;
Embodiment:
Example during following the present invention incites somebody to action in conjunction with the accompanying drawings is further described:
Home network control bus of the present invention is the network layout that is applicable to household internal, has adopted full distributed intelligent control network technology, and the home network control bus has two-way communications capabilities.Network cable adopts markization 5 class lines, and each node can obtain power supply (24VDC) from bus.The signal transmission rate of home network control bus is 20Kbps, and the maximum node number of configuration is 200, and allowing maximum transmission range is 200 meters.If node number a lot (as 200 nodes) guarantees that node is the shortest to the distance of controller, best system configuration method is shown in figure one.On network interface P1 that the home network control bus interface J1 of controller M and J2 link each node respectively and the P2 (or being respectively N1, Nn, Nal, Nan, Nbl, Nbn, Ncl, Ncn).Because be nonpolarity, do not need J1 to P1 between them, J2 is to P2.
Figure two is system works principle schematic of the present invention, the bus interface P1 of each functional node and P2 link on the network interface J1 and J2 of controller M by home network control bus (IDBus), wherein the keyboard node can carry out programming operation and control operation to controller, and programming need not carried out on node.Because the keyboard node structure is simple, be again to hang on the bus, therefore controller M can connect one with upper keyboard N3 as required.Hang over the input node N on the bus
1The input circuit contact close, this incident of generation leaves in the ad-hoc location with data format, when controller M inquires this node with the speed of 20Kbps, with this data read, analyzes and deals with.When receiving, controller M wants certain output node N
2When lighting the instruction of lamp, when controller inquired this node, if this node is idle, this node will receive order, started the execution unit energized, lighted lamp.
The needed power supply of each node is provided by bus by controller M.So home network control bus of the present invention is simple in structure, bus interface is succinct, other bus structures relatively, and cost of the present invention is much lower.
Controller M mainly is made up of single-chip microcomputer 1, memory 2, home bus interface J1 and J2 (3), network interface 4, power supply 5 modules, shown in figure three.The program that leaves in the memory 2 is passed through home network bus interface 3 at any time in the state variation of inquiring about each node, in case state variation occurs, single-chip microcomputer carries out judgment processing by the program that resides in the memory 2 to this signal through interface 3 received signals: perhaps by network interface 4 information is sent to administrative center; Perhaps by the corresponding output node executable operations of home network control bus interface 3 orders.
Controller M is the platform of home control network, the administrative center of digitized home.Wherein monolithic processor (CPU) is finished the unified coordination and administration function, promptly is used for the data processing on upper strata and assists finishing of each functions of modules.
Memory module comprises flash memory (FLASH) and random asccess memory (RAM), and described FLASH is used to deposit protocol code, affairs drive and the program utility function and the application program of task scheduling, and described RAM is used to store the data of application and system.
The home control network bus interface module provides the both-way communication between controller M and each the node N, and controller provides power for each node by this module simultaneously.
The network communication interface module can directly be connected with computer, but also access network based on ethernet, telephone network also can be connected with other information systems, as LonWorks.
Node N has input circuit and output loop simultaneously, and when the state of input circuit changed, just N can send to an event data on the bus, if M sends an event data to bus, the output loop of corresponding N produces carried out action.
The input circuit of node N can have switching value input, tandem data input and analog quantity input; Output loop can have switching value output, tandem data output, pulse-width modulation output.Which kind of input/output state node N is in, and this is decided by 4 status words, and status word is programmable.
Node N just automatically is written to the network address and status word among the EEPROM of node self when configuration.
At least connecting on the network controller M more than the keyboard N3, keyboard makes network controller M enter programming.To controller M programming or each node module of hand monitor, be to finish by the keyboard node module that hangs on the network control bus, this keyboard is furnished with LED or LCD demonstration, and the state of available keyboard and each node of demonstration inquiry reaches for information about simultaneously.
The coding form that controller M sends to the packet on the bus is: binary digit 1 40KHz frequency representation, binary digit 0 20KHz frequency representation.
Present networks is to adopt the timesharing agreement, each node of wheel continuous query.
The transmission rate of data is the constant 20Kbps that are.If 200 nodes of network configuration, per second is inquired about each node 80 times, has satisfied real-time control fully and has used.If 100 nodes of network configuration, inquiry times reaches 160 times.This protocol efficiency is very high, and is reliable and stable again, can not produce conflict.This is of the present invention one big advantage, the signal conflict of having avoided bus contention to cause, and especially the node of hanging on bus avoids the difficulty of signal conflict bigger for a long time, can improve the cost of equipment.
The present invention adopts the bus inquiry mode, and figure four is system configuration logic diagrams of the present invention.In general its real-time is good not as the bus contention mode, and still, the present invention is under 200 node conditions, and per second is detected each node 80 times in turn, if the node number is few, the frequency of detecting is taller, is enough to satisfy the real-time control of family.This is the outstanding place of the present invention.Be depicted as the system configuration logic diagram that bus is striven unexpectedly as figure four, A is a main equipment, L is a slave unit, when several main equipments simultaneously when the bus application takies, the priority problem will appear, when the main equipment of striving unexpectedly many more, the conflict possibility big more, certainly by reducing conflict with advanced software and hardware interfacing, this needs comparatively complex technology and high cost.
System of the present invention control is very flexible.When controller was carried out each node in when programming, and the instruction that when stops all to be left in the memory, management node automatically after system is activated.For example make the N1 node connect the electric heater power supply in 4 thirty, turn off for 10; The N2 node is drawn the curtain together at 19, draw the curtain apart etc. for 6.Also can control each node with Digiplex, Infrared remote controller remote control, also available phone, computer are controlled.
The node that hangs on the home network control bus can be divided into following type with regard to its function::
The first kind is the man-machine interface Control Node.
Mainly comprise keyboard interface, phone module, PC controlling platform, wireless remote control interface etc., the user utilizes that the equipment be connected on this category node can be programmed to home network controller and each functional node, data modification and control the work of each node.
Second class is a lighting control node.
Mainly refer to electronic switch and dimmer, directly replaced original lamp switch, realize domestic lighting control automation, according to needs separately, can realize the automatic switch of each light source, the adjusting of brightness, can also carry out remote control control to illumination by man-machine Control Node,, produce different light and make up and satisfy different lighting demands in a word by programming to controller M.
The 3rd class is the electrical equipment control node.
Be actually controlled supply socket, can directly replace the supply socket in the family, realize the household electrical appliance on/off is controlled.If the attaching plug of electrical equipment such as electric rice cooker, water heater, washing machine, electrically driven curtain, water pump is inserted on this socket, native system is implemented control automatically according to the operation sequence of having set to it, regularly connect the power supply of certain electrical equipment, deenergization again then, and so on, perhaps utilize the man-machine interface Control Node, carry out straighforward operation.
The 4th class is the security protection Control Node.
This category node comprises human body infrared alarm, gas leakage warning, smog fire alarm, urgent, button, door magnetic, window magnetic warning node etc.Common transducer is articulated on the home network control bus by this category node, form the home intelligent safety and protection system, warning message is sent to administrative center or by telephone line warning message is reported to the householder through network system, realized alert monitoring in real time and indoor design condition is monitored.
The 5th class is the multilist acquisition node.
The pulse signal of home-use water meter, ammeter, gas meter, hot water gauge, pure water table etc. is delivered to controller M by this node collection through the home network control bus, is sent to administrative center or management function department through processed, realizes checking meter out the family.Also have anti-theft alarm function simultaneously, and be furnished with reserve battery, prevent that mains failure from influencing pulse collection.
The 6th class is a fan coil temperature adjustment node.
Control the high, medium and low three kinds of speed of blower fan according to the measured temperature of temperature sensor, realize thermostatic control.
The 7th class is the network home appliance node.
Network home appliance is the household electrical appliance that can directly surf the Net, by the state of network inquiry household electrical appliances, downloads the required software of these household electrical appliances from the Internet, just can download recipe and cooking method from the Internet as microwave oven.Also can carry out remote fault diagnosis etc. to household electrical appliances.Because network home appliance all has an external interface, and the native system node possesses the interface of communicating by letter with outer CPU, therefore can be connected network home appliance with this node.Network home appliance has also increased the management function of this family Control Network to network home appliance simultaneously except that still linking on the network by home network controller.
For ordinary electrical home appliance, it does not possess network interface, so node just controls the power supply of a supply socket, and the attaching plug of household electrical appliances is inserted in this and is subjected on the control socket, thereby reaches from the purpose of network control appliance switch.This process does not need household electrical appliances are transformed.
Node N mainly is made up of processor, eight bit address register, flash memory, four bit status registers, switching value input port, analog quantity input, serial data input port, switching value delivery outlet, serial data delivery outlet, pulse-width modulation delivery outlet and network interface P.Controller M distributes address for each node by bus and sets the state that inputs or outputs of each node when system configuration, address code leaves in the 8 bit address registers, the status word of setting leaves in 4 bit status registers, determines that this node is which kind of to be carried out input or output function.Switching value inputs or outputs the control that mouth is used for push-button switch, lamp switch, general electrical equipment break-make.There is A/D converter analog quantity input inside, is used for temperature detection etc.Serial i/O mouth can be connected communication with computer.Pulsewidth transfers delivery outlet can implement the adjusting of light etc.These groups of nodes become domestic network system, can carry out control and adjusting to various electrical equipment in the family, really realize household operation automation, the networking of information processing.
Figure six is programming principle logic diagrams of the present invention.The home network controller user of native system can programme to it, with satisfying personalized demand.As can be seen from Figure, to its programming several different methods can be arranged, typically use the keyboard that is articulated on the home network control bus, when after keying in the programming starting command on the keyboard, home network controller promptly is in the input of waiting for program command and data, and these instruction and datas are stored in the memory, if it is not programmed once more or revise, these instruction and datas will be saved forever.Can dispose LCDs on the keyboard, directly monitor the input of programming data and instruction, avoid operating mistake.If native system is connected in the post and telecommunications net by calling node, home network controller is as telephone terminal, so by landline telephone or mobile phone controller is carried out programming operation or revises data, straighforward operation that Here it is.
Home network controller can be connected with computer through serial port (RS-232), carries out communication, and the editting function of available computers is programmed and data modification to home network controller.
Figure seven is coded pulse figure, the digital coding mode of home network control bus of the present invention, produce the sinusoidal waveform that approaches audio frequency (20KHz) by the bus interface of controller M and form data, the positive half cycle transmission information of carrier wave, native system is to adopt time-devision system, do not adopt contention protocols and do not resemble the GSM, the signal transmission delay of native system is fixed, and does not have the danger of signal conflict.DATA REASONING is to detect at the back half of the positive half cycle of pulse, is " 0 " greater than zero person, and the person of equalling zero is " 1 ", so high frequency noise is offset by the oneself.And the carrier wave negative half period provides power supply, so the variation in the electrical source consumption can the interfere information transmission.This is the distinctive feature of native system, has high reliability.
Figure eight is package time sequence figure of home network control bus.The data structure overwhelming majority of the controlling object in the family is a switching value, and part belongs to analog quantity, and the data structure of native system is divided into 8,12 and 16 three kinds for this reason.Each packet with 51 beginnings as frame, data are one section with 4, separate with 0 between the section, so transmit 16 of the packets needs of 8 bit data, when articulating 50 nodes on the bus, the required transmission time is 50 milliseconds; Transmit 21 of the packets needs of 12 bit data, the required transmission time is 65 milliseconds; And transmit 26 of the packets needs of 16 bit data, the required transmission time is 82 milliseconds.
Claims (5)
1, a kind of intelligent home network control bus comprises a network controller and a plurality of node, and described network controller and described a plurality of node interconnect by network-bus, it is characterized in that:
Described network controller mainly is made up of single-chip microcomputer, memory, home network bus interface, network interface, power module, program stored is passed through the home network bus interface at any time in the state variation of inquiring about each node in the memory, in case state variation occurs, single-chip microcomputer carries out judgment processing by the program that resides in the memory to this signal through home network bus interface received signal; Perhaps information is sent to the supervisory computer of center of housing estate by network interface; Perhaps by the corresponding output node executable operations of home network control bus interface command;
Described network node has input circuit and output loop simultaneously, and wherein input circuit has switching value input, tandem data input and analog quantity input; Output loop has switching value output, tandem data output and pulse-width modulation output; Which kind of input/output state described node is in, and by 4 status number decisions, this status number is programmable;
The needed power supply of described a plurality of node is provided by bus by network controller;
Described network-bus only uses a pair of twisted-pair feeder, and adopts the time-division communication agreement, each node of wheel continuous query;
Described network-bus is multiplexing by signal data line and power line, the positive half cycle transmission signals of signal carrier, and the negative half period of signal carrier provides power supply;
The bus interface of described network controller can be connected with randomly topologically structured carrying out with the bus interface of a plurality of nodes nonpolarityly, and does not need terminator cap.
2, intelligent home network control bus according to claim 1 is characterized in that described network controller is connected with a plurality of nodes by a pair of twisted-pair feeder, and the quantity of node mostly is 200 most, and communication distance is 200 meters to the maximum.
3, intelligent home network control bus according to claim 1 is characterized in that connecting a keyboard on the described network controller at least, and keyboard makes network controller enter programming.
4, intelligent home network control bus according to claim 1, the message transmission rate that it is characterized in that described network are the constant 20Kbps that is.
5, intelligent home network control bus according to claim 1 is characterized in that the signal that transmits on the bus is 20 kilo hertzs a sine wave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021386463A CN1172486C (en) | 2002-11-20 | 2002-11-20 | Intelligent domestic network controlling bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021386463A CN1172486C (en) | 2002-11-20 | 2002-11-20 | Intelligent domestic network controlling bus |
Publications (2)
| Publication Number | Publication Date |
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| CN1430384A CN1430384A (en) | 2003-07-16 |
| CN1172486C true CN1172486C (en) | 2004-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB021386463A Expired - Fee Related CN1172486C (en) | 2002-11-20 | 2002-11-20 | Intelligent domestic network controlling bus |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100471118C (en) * | 2006-11-20 | 2009-03-18 | 智易科技股份有限公司 | Switch control system and method for power line home network |
| CN101877718A (en) * | 2010-04-27 | 2010-11-03 | 蒋涵民 | SIP-based integrated interconnection management system of internet of things |
| CN102520692A (en) * | 2011-12-19 | 2012-06-27 | 江门市龙涡网络科技有限公司 | Home network automation system |
| CN106292435A (en) * | 2016-08-22 | 2017-01-04 | 上海新野电子有限公司 | A kind of control method of the intelligence building system |
| CN111047850A (en) * | 2019-12-27 | 2020-04-21 | 深圳华越诚电子科技有限公司 | Method, device and equipment for remotely reading water, electricity and gas |
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