CN104065544B - A kind of communication means based on intelligent switch - Google Patents
A kind of communication means based on intelligent switch Download PDFInfo
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- CN104065544B CN104065544B CN201410298512.0A CN201410298512A CN104065544B CN 104065544 B CN104065544 B CN 104065544B CN 201410298512 A CN201410298512 A CN 201410298512A CN 104065544 B CN104065544 B CN 104065544B
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Abstract
The present invention provides a kind of communication means based on intelligent switch, and the communication means is based on a real-time performance for being provided with multiple switch panel, it is characterised in that：The switch panel is provided with least one set of button, every group of button individually controls same different conditions in kind, it can be set and mutually controlled by the communication means between any scene button, a kind of each self-defined scene mode of scene button, each switch panel on each switch panel；The communication means includes physical network topology module, bus collision processing module and node data processing module.The present invention realizes being in communication with each other between intelligent switch node, meanwhile, the present invention each Node distribution processing, individual reception, storage and is controlled using reversely record, substantially increases communication efficiency, performance and the flexibility of intelligent switch.
Description
Technical field
The present invention relates to a kind of communication protocol, more particularly to a kind of communication means based on intelligent switch.
Background technology
RS485 communication bus only defines the electrical equipment specification of physical layer, without collision detection or arbitration mechanism.Therefore, it is traditional
, it is necessary to define upper layer communication agreement when being communicated using RS485, such as MODBUS agreements can only use one master and multiple slaves structure, and
And can not be communicated between slave, row information exchange can only be entered by host computer polls, indirect control is reached, in this one master and multiple slaves
In structure, once host fails, network paralysis can not normal work, and multiple targets control record be stored on main frame, make
Must control, allocating time it is long, underaction.All answered between each switch control node in household field relatively independent, it is impossible to because
Damage for a host node destroys whole system.The communication protocol majority for being currently based on RS485 is only suitable for one-way data and adopted
The application such as collection, it is impossible to the requirement for meeting double-direction control and node disjoint is switched for household field.
The content of the invention
The technical problem to be solved in the present invention, is to provide a kind of communication means based on intelligent switch, the communication means
Be based on RS485 serial communications design it is a kind of can realize it is much much more main from the means of communication.
What the present invention was realized in：A kind of communication means based on intelligent switch, the communication means need to provide physics
Network topology structure module, bus collision processing module and node data processing module；
The physical network topology module includes all switch panels and bus in a region, and each switch panel leads to
Bus connection is crossed, a switch panel is a node, and each node is in communication with each other；
The bus collision processing module includes clash handle hardware module and clash handle software module；
The node data processing module is responsible for setting and execution to scene, and the number in setting up procedure and implementation procedure
Recorded according to using reverse, each Node distribution processing, individual reception, storage and control, data communication is based on broadcast communication, point
Carried out supplemented by point to-point communication；
Methods described is comprised the following steps that：
All switch panels are connected by bus in step 1, a region, form the physical network topology module,
The module is the unibus structure physical network of multinode, and each node is slave mode in the case where not sending data, place
In listening state, data to be received are waited；
When any one node in step 2, slave needs scene set or triggering scene, sentenced by node data processing module
Whether disconnected bus is in running order, if so, then waiting network idle；Otherwise, host mode is switched to；
Step 3, the node in host mode, seize bus, by the clash handle hardware in bus collision processing module
Clash handle software module in module protection circuit, bus collision processing module reduces the data frame that will be broadcasted, main frame
The data frame of broadcast transmission one, the data frame includes scene setting frame or scenario triggered frame；
The data frame sent from main frame is monitored and received to step 4, slave, if the data frame is scene setting frame,
Selected slave is by the record of keys being selected in own node and is stored in own list；If the data frame received is
Scenario triggered frame, then call and perform corresponding data instruction in own list.
Further, the switch panel is included in light panel, curtain panel and light modulation panel, and each switch panel
Provided with least one set of button, the same different conditions in kind of every group of button independent control set any on each switch panel
Individual scene button, a kind of each self-defined scene mode of scene button.
Further, the clash handle hardware module is realized by RS485 interfaces improvement design, is connect in RS485
2 grades of protections are devised on mouthful：Interface high-pressure electrostatic that first class of protection is made up of unidirectional TVS pipe etc. is protected；Second class protection be by
The protection of the MCU signal ends of two-way TVS pipe composition, protects MCU from the destruction of overcurrent-overvoltage level electrostatic, is come from so as to solve
The destruction of network-external high-voltage pulse or electrostatic.
Further, the specific design circuit of the RS485 interfaces：The circuit include RS485 communication chips, periphery
TVS pipe, resistance and electric capacity, and RS485 communication chips, TVS pipe, resistance and the electric capacity of periphery pass through electrical connection.
Further, the clash handle software module reduces generation data by the length and size of design data frame
The probability of conflict, improves communication efficiency.
Further, data frame includes frame head, destination address, source address, frame length, instruction, data, school in the step 3
Test and postamble, wherein, destination address is broadcast address, and source address is instructed as scene setting instruction or field to rise node address
Scape triggering command, data record is to rise in node to rise key, is verified as LRC verifications or CRC check.
The invention has the advantages that：The present invention by provide it is a kind of it is much much more main from communication means, realize intelligence and open
Being in communication with each other between artis, meanwhile, data are using reverse record, i.e., each node point in arrangement above process and trigger process
Cloth processing, individual reception, storage and control, substantially increase communication efficiency, performance and the flexibility of intelligent switch.
Brief description of the drawings
The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is physical network topology figure of the present invention.
Fig. 2 is Interface design schematic diagram of the present invention.
Fig. 3 is that data collision of the present invention analyzes schematic diagram.
Fig. 4 is node data process chart of the present invention.
Embodiment
Fig. 1 to Fig. 4, a kind of communication means based on intelligent switch are referred to, the communication means is provided with many based on one
The real-time performance of individual switch panel, the switch panel includes light panel, curtain panel and light modulation panel, each switching surface
Plate is provided with least one set of button, the same different conditions in kind of every group of button independent control, each switch panel and can set
Put and pass through the communication means between any scene button, a kind of each self-defined scene mode of scene button, each switch panel
Communicated；The communication means need to be provided at physical network topology module, bus collision processing module and node data
Manage module；
As shown in figure 1, the physical network topology module includes all switch panels and bus in a region, each
Switch panel is connected by bus, and a switch panel is a node, and each node can be in communication with each other；
The bus collision processing module includes clash handle hardware module and clash handle software module；
The clash handle hardware module is realized by RS485 interfaces improvement design, due to using bus physical net
Network structure, is present from external high pressure pulse or electrostatic breakdown and excessively stream destruction etc. caused by internal bus conflict, may
Destruction can be shone into RS485 communication interfaces.Therefore need to carry out RS485 interfaces to transform and protect accordingly.As shown in Fig. 2
The specific design circuit of RS485 interfaces of the present invention：The circuit includes RS485 communication chips, TVS pipe, resistance and the electric capacity of periphery,
And RS485 communication chips, TVS pipe, resistance and the electric capacity of periphery are by electrical connection, to 2 grades of guarantors of RS485 interfaces improvement design point
Shield, the protection such as interface high-pressure electrostatic that first class of protection is made up of D7, D8 and D9 unidirectional TVS pipe, second class protection be by DT2 and
The MCU signal ends protection of DT3 two-way TVS pipe composition, to protect MCU from the destruction of overcurrent-overvoltage and electrostatic.Protection philosophy：
If outside has thunderbolt or other high-pressure electrostatics or the high pressure to come in by inlet line, it can be absorbed and discharge by unidirectional TVS pipe
To ground wire, by system ground wire to the earth, so that the external high pressure or electrostatic that slacken enter the peak value of second class protection.When by disappearing
High-voltage pulse or electrostatic after weak are entered after the further clamper of the two-way TVS pipe of second class protection absorbs by R27, R28, the high pressure or
The basic scope received in MCU of electrostatic, into inside MCU, from without being damaged to MCU.If this high pressure duration
Long, after two grades of TVS pipe clampers, electric current just persistently increases, and causes R27, R28 because what is exceeded bears power and blow or resistance
Become big, to receive substantially in MCU scope, into inside MCU, MCU will not also be damaged；
The clash handle software module reduces the probability clashed by reducing transmission data length, such as Fig. 3 institutes
Show, when two panels are required for sending data, all go to detect bus, find now bus free, two panels will be sent out simultaneously
Data are sent, data collision will be now there occurs.Assuming that data length is L, transmission data rate is B/bps, due to interface chip
Control chip is just notified after a complete byte data can only be detected, it can be considered that being possible to hair during sending the data byte
Raw collision, the probability of collision is 8/B.Data length is L+1 after destruction, that is, bus after (L+1) * 8/B times is needed after colliding
Just recover communication.Analyzed more than：There is the risk for occurring data collision in this agreement, but appropriate raising sends data,
Reduce and send data length, the probability clashed can be reduced, improve communication efficiency.The present invention is handled using data distribution,
The size of data transmitted in network is substantially reduced, the data only artificially triggered just need broadcast transmission into network, but
The probability very little that two controlling switches are concurrently depressed, meanwhile, the lost part data in domestic applications will not be caused to system
Destruction；
The node data processing module is responsible for setting and execution to scene, and the number in setting up procedure and implementation procedure
Recorded according to using reverse, each Node distribution processing, individual reception, storage and control, data communication is based on broadcast communication, point
Carried out supplemented by point to-point communication；
Methods described is comprised the following steps that：
All switch panels are connected by bus in step 1, a region, form the physical network topology module,
The module is the unibus structure physical network of multinode, and each node is slave mode in the case where not sending data, place
In listening state, data to be received are waited；
When any one node in step 2, slave needs scene set or triggering scene, sentenced by node data processing module
Whether disconnected bus is in running order, if so, then waiting network idle；Otherwise, host mode is switched to；
Step 3, the node in host mode, seize bus, by the clash handle hardware in bus collision processing module
Clash handle software module in module protection circuit, bus collision processing module reduces the data frame that will be broadcasted, main frame
The data frame of broadcast transmission one, the data frame includes scene setting frame or scenario triggered frame, and each data frame includes frame head, mesh
Address, source address, frame length, instruction, data, verification and postamble are marked, as shown in table 1, wherein, destination address is broadcast address, source
Address is rises node address, it is scene setting instruction or scenario triggered instruction to instruct, and data record is risen in node
Key is risen, LRC verifications or CRC check is verified as；
Table 1
| Frame head | Destination address | Source address | Frame length | Instruction | Data | Verification | Postamble |
| 0xFD | 0x00-0xFF | 0x00-0xFF | 0-255 | 0-255 | 0-255 | LRC/CRC | 0xFE |
The data frame sent from main frame is monitored and received to step 4, slave, if the data frame is scene setting frame,
Selected slave is by the record of keys being selected in own node and is stored in own list；If the data frame received is
Scenario triggered frame, then call and perform corresponding data instruction in own list.
As shown in table 2 and table 3, using light panel as node is risen, a scene S1 is set, the curtain of scenery control first is opened
Closed with the second curtain；
The table 3 of table 2
Scene S1 on light panel D1 is configured：S1 is selected, bus free is monitored, network can use, into setting
Put pattern, such as frame data of broadcast transmission one, table 4：
Table 4
| Frame head | Destination address | Source address | Frame length | Instruction | Data | Verification | Postamble |
| 0xFD | 0x00 | 0x01 | 0x08 | 0x85 | 0x10 | 0x00 | 0xFE |
The button that the button and the second curtain control that selection upper first curtain controls of curtain panel C1 are opened are closed, curtain panel connects
Data, record S1 values and the data by operating key are received, are stored in the storage list of curtain panel, curtain panel C1 is recorded such as
Table 5：
Table 5
| Initiate panel | Initiate key | By control key |
| 0x85 | 0x10 | 0x21 |
| 0x85 | 0x10 | 0x26 |
When triggering scene S1：S1 is selected, bus free is monitored, network can use, into control model, the frame of broadcast transmission one
Data, such as table 6：
Table 6
| Frame head | Destination address | Source address | Frame length | Instruction | Data | Verification | Postamble |
| 0xFD | 0x00 | 0x01 | 0x08 | 0x86 | 0x10 | 0x00 | 0xFE |
Each panel searches itself storage list and does respective handling, and curtain panel is called out was stored in own list originally
In the record on S1, control the first curtain open and the second curtain close.When needing change scene, setting S1 is re-started.
Data are using reverse record in arrangement above process and trigger process, i.e., each Node distribution is handled, individual reception,
Storage and control, a frame data can control any number of control nodes.
Although the foregoing describing the embodiment of the present invention, those familiar with the art should manage
Solution, the specific embodiment described by us is merely exemplary, rather than for the restriction to the scope of the present invention, is familiar with this
The equivalent modification and change that the technical staff in field is made in the spirit according to the present invention, should all cover the present invention's
In scope of the claimed protection.
Claims (6)
1. a kind of communication means based on intelligent switch, it is characterised in that：The communication means need to provide physical network topology knot
Structure module, bus collision processing module and node data processing module；
The physical network topology module includes all switch panels and bus in a region, and each switch panel passes through total
Line is connected, and a switch panel is a node, and each node is in communication with each other；
The bus collision processing module includes clash handle hardware module and clash handle software module；
The node data processing module is responsible for setting and execution to scene, and data are adopted in setting up procedure and implementation procedure
With reverse record, each Node distribution processing, individual reception, storage and control；
Methods described is comprised the following steps that：
All switch panels are connected by bus in step 1, a region, form the physical network topology module, the mould
Block is the unibus structure physical network of multinode, and each node is slave mode in the case where not sending data, in prison
State is listened, data to be received are waited；
When any one node in step 2, slave needs scene set or triggering scene, judge total by node data processing module
Whether line is in running order, if so, then waiting network idle；Otherwise, host mode is switched to；
Step 3, the node in host mode, seize bus, by the clash handle hardware module in bus collision processing module
Clash handle software module in protection circuit, bus collision processing module reduces the data frame that will be broadcasted, host broadcast
A data frame is sent, the data frame includes scene setting frame or scenario triggered frame；
The data frame sent from main frame is monitored and received to step 4, slave, if the data frame is scene setting frame, is chosen
In slave is by the record of keys being selected in own node and is stored in own list；If the data frame received is scene
Trigger frame, then call and perform corresponding data instruction in own list.
2. a kind of communication means based on intelligent switch according to claim 1, it is characterised in that：The switch panel bag
Light panel, curtain panel and light modulation panel are included, and each switch panel is provided with least one set of button, every group of button is independently controlled
Make and any scene button, each scene button self-defined one are set on same different conditions in kind, each switch panel
Plant scene mode.
3. a kind of communication means based on intelligent switch according to claim 1, it is characterised in that：The clash handle is hard
Part module is realized by RS485 interfaces improvement design, and 2 grades of protections are devised on RS485 interfaces：First class of protection is by list
The protection of the interface high-pressure electrostatic constituted to TVS pipe；The protection for the MCU signal ends that second class protection is made up of two-way TVS pipe.
4. a kind of communication means based on intelligent switch according to claim 3, it is characterised in that：The RS485 interfaces
Specific design circuit：The circuit includes RS485 communication chips, TVS pipe, resistance and the electric capacity of periphery, and RS485 communication cores
Piece, TVS pipe, resistance and the electric capacity of periphery pass through electrical connection.
5. a kind of communication means based on intelligent switch according to claim 1, it is characterised in that：The clash handle is soft
Part module reduces the probability for occurring data collision by the length and size of design data frame.
6. a kind of communication means based on intelligent switch according to claim 1, it is characterised in that：Number in the step 3
Include frame head, destination address, source address, frame length, instruction, data, verification and postamble according to frame, wherein, destination address is broadcast ground
Location, source address is rises node address, and it is that scene setting instruction or scenario triggered are instructed to instruct, and data record is to rise node
In rise key, be verified as LRC verification or CRC check.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410298512.0A CN104065544B (en) | 2014-06-27 | 2014-06-27 | A kind of communication means based on intelligent switch |
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| CN201410298512.0A CN104065544B (en) | 2014-06-27 | 2014-06-27 | A kind of communication means based on intelligent switch |
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| CN104065544B true CN104065544B (en) | 2017-09-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104394044B (en) * | 2014-10-29 | 2018-02-02 | 小米科技有限责任公司 | The method and apparatus of self-defined smart machine scene mode |
| CN104765291B (en) * | 2015-02-10 | 2019-06-04 | 海尔优家智能科技（北京）有限公司 | A kind of method, apparatus and gateway controlling smart machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101404839A (en) * | 2008-05-16 | 2009-04-08 | 上海大峡谷光电科技有限公司 | Enhancement type DMX512 light control system added with auxiliary collocation channel |
| CN101742774A (en) * | 2009-12-09 | 2010-06-16 | 惠州大景照明控制有限公司 | Intelligent illumination bus system and control method thereof |
| CN102625554A (en) * | 2012-03-20 | 2012-08-01 | 浙江大学 | Distributed DALI (Digital Addressable Lighting Interface) lighting control system and method thereof |
-
2014
- 2014-06-27 CN CN201410298512.0A patent/CN104065544B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101404839A (en) * | 2008-05-16 | 2009-04-08 | 上海大峡谷光电科技有限公司 | Enhancement type DMX512 light control system added with auxiliary collocation channel |
| CN101742774A (en) * | 2009-12-09 | 2010-06-16 | 惠州大景照明控制有限公司 | Intelligent illumination bus system and control method thereof |
| CN102625554A (en) * | 2012-03-20 | 2012-08-01 | 浙江大学 | Distributed DALI (Digital Addressable Lighting Interface) lighting control system and method thereof |
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Address after: 350100 Fuzhou hi tech Zone, Fujian hi tech Industrial Park, Haixi hi tech park, phase I, building No. 7, building No. Applicant after: Fujian light speed things Polytron Technologies Inc Address before: 350100 Fujian City, Minhou Province town of science and technology on the east side of the Road West hi tech Industrial Park Venture Building B District, layer 4, Applicant before: FUJIAN GAKATO IOT TECHNOLOGY CO., LTD. |
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