CN104728988B - Air conditioner and air-conditioning internal-external machine communication means, device, equipment - Google Patents
Air conditioner and air-conditioning internal-external machine communication means, device, equipment Download PDFInfo
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- CN104728988B CN104728988B CN201310705312.8A CN201310705312A CN104728988B CN 104728988 B CN104728988 B CN 104728988B CN 201310705312 A CN201310705312 A CN 201310705312A CN 104728988 B CN104728988 B CN 104728988B
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
- F24F11/58—Remote control using Internet communication
Abstract
The invention discloses a kind of air conditioner and air-conditioning internal-external machine communication means, device, equipment.Wherein, the equipment includes：CAN；RS485 buses；Data converter, air conditioner external is connected by CAN with data converter, and internal machine of air-conditioner is connected by RS485 buses with data converter, wherein, data converter is used to change RS485 data and CAN data.Using the present invention, solve the problem of air-conditioning internal-external machine communication efficiency of the prior art is low, realize the communication for quick and precisely efficiently carrying out air conditioner internal-external machine, and air conditioner internal-external machine good compatible network under different systems can be realized, so that the outer machine matching versatility enhancing of machine under heterogeneous networks, makes internal-external machine configuration type selecting under different system more flexible.
Description
Technical field
The present invention relates to airconditioning control field, in particular to a kind of air conditioner and air-conditioning internal-external machine communication means, dress
Put, equipment.
Background technology
In multiple on-line system, RS485 network multi-connected machines are used completely, and traffic rate is slower and anti-interference and data
Fault-tolerant ability is weaker, and agreement upgrading updates more difficult；And CAN network multi-connected machine is used completely, although traffic rate and anti-
Interference performance has very big lifting, but is due to be limited by network characteristic itself, and per frame, transmission valid data byte number is less, therefore
Send data efficiency relatively low.
Specifically, CAN（Control area net(CAN)）For serial communication, it can effectively support the distribution with very high safety grade real
When control.CAN is compared as shown in table 1 with RS485 communication characteristics.
Table 1
And if using air-conditioning internal-external machine under different system communication network different system can not carry out in same system
Match somebody with somebody.
For the problem of air-conditioning internal-external machine communication efficiency is low in the prior art, effective solution is not yet proposed at present.
The content of the invention
For the problem of air-conditioning internal-external machine communication efficiency is low in correlation technique, effective solution is not yet proposed at present,
Therefore, it is a primary object of the present invention to provide a kind of air conditioner and air-conditioning internal-external machine communication means, device, equipment, to solve
Above mentioned problem.
To achieve these goals, according to an aspect of the invention, there is provided a kind of air-conditioning internal-external machine communication equipment, is somebody's turn to do
Equipment includes：CAN；RS485 buses；Data converter, air conditioner external is connected by CAN with data converter,
Internal machine of air-conditioner is connected by RS485 buses with data converter, wherein, data converter is used to change RS485 data and CAN
Data.
Further, data converter includes：CAN communication interface, is connected with CAN, for transmitting CAN data；CAN
Data transmit-receive circuit, is connected with CAN communication interface, for receiving and dispatching CAN data；RS485 interfaces, are connected with RS485 buses, are used for
Transmit RS485 data；RS485 data transmit-receive circuits, are connected with RS485 interfaces, for receiving and dispatching RS485 data；Main control chip, even
It is connected between CAN data transmit-receives circuit and RS485 data transmit-receive circuits, for controlling CAN data transmit-receives circuit to receive and dispatch CAN numbers
According to, and control RS485 data transmit-receives circuit transmitting-receiving RS485 data.
Further, data converter also includes：Power module, respectively with main control chip, CAN data transmit-receives circuit and
RS485 data transmit-receives circuit is connected, for being supplied for main control chip, CAN data transmit-receives circuit and RS485 data transmit-receives circuit
Electricity.
Further, data converter also includes：Reset circuit, is connected with main control chip, for send reset signal with
Triggering main control chip control data converter returns back to original state.
Further, RS485 data transmit-receives circuit includes：RS485 data transmit-receive chips；First Transient Voltage Suppressor and
On second Transient Voltage Suppressor, the signal port for being connected to RS485 data transmit-receive chips.
Further, RS485 data transmit-receives circuit includes：Current-limiting resistance, is connected to main control chip and the first transient voltage
Between suppressor.
Further, CAN data transmit-receives circuit includes：CAN data transmit-receive chips；First power isolation circuit, is connected to
Between CAN data transmit-receives chip and main control chip；Second source isolation circuit, is connected to CAN data transmit-receives chip and CAN communication
Between interface；First build-out resistor, is connected between the first power isolation circuit and main control chip；Second build-out resistor, connection
Between second source isolation circuit and CAN communication interface.
Further, CAN data transmit-receives circuit includes：3rd Transient Voltage Suppressor, respectively with the first isolated from power electricity
Road, second source isolation circuit, the first build-out resistor and the connection of the second build-out resistor.
Further, CAN data transmit-receives circuit also includes：Polarity switching, matches electricity with main control chip, first respectively
Resistance and the connection of the second build-out resistor, polarity switching include：Relay；First triode, the first coil with relay
Connection；Second triode, is connected with the second coil of relay, wherein, by controlling the first triode and the second triode to exist
Not conducting control relay commutation in the same time, to switch the reiving/transmitting state of CAN data transmit-receive circuits.
To achieve these goals, according to another aspect of the present invention there is provided a kind of air conditioner, the air conditioner includes：
Air conditioner external；One or more internal machine of air-conditioner；Air-conditioning internal-external machine communication equipment；Wherein, air conditioner external passes through CAN
It is connected with one or more data converters；Each data converter is connected by RS485 buses with internal machine of air-conditioner.
To achieve these goals, should according to another aspect of the present invention there is provided a kind of air-conditioning internal-external machine communication means
Method includes：The control information of air conditioner external is received by CAN；Control information is converted to RS485 by data converter
Data；RS485 buses are by RS485 data transfers to internal machine of air-conditioner and manual operator；RS485 buses receive internal machine of air-conditioner and hand
Grasp the feedback information of device；Feedback information is converted to CAN data by data converter；CAN data are back to air conditioner by CAN
Outer machine.
To achieve these goals, should according to another aspect of the present invention there is provided a kind of air-conditioning internal-external machine communicator
Device includes：First receiving module, the control information for receiving air conditioner external by CAN；First modular converter, is used
Control information is converted into RS485 data in data converter；First transport module, passes RS485 data for RS485 buses
Transport to internal machine of air-conditioner and manual operator；Second receiving module, the feedback of internal machine of air-conditioner and manual operator is received for RS485 buses
Information；Second modular converter, CAN data are converted to for data converter by feedback information；Module is returned to, for CAN
CAN data are back to air conditioner external.
Using the present invention, the CAN data in CAN can be converted to by RS485 data by data converter, and
RS485 data in RS485 buses can be converted to CAN data, the conversion of RS485 data and CAN data be realized, in sky
Adjust and the communication equipment is used in device, be not to be communicated completely using RS485, or communicated completely using CAN, so as to avoid
RS485 is only used only in the prior art to communicate, traffic rate is slower and anti-interference and the problem of weaker data fault-tolerant ability,
And completely online using CAN network, the problem of transmission data efficiency is relatively low is avoided, but combines CAN and 485 buses
Advantage, use traffic rate high as the controller in the air conditioner external of host computer and the stronger CAN of antijamming capability be total
Line sends control information, status information to each indoor set and manual operator, contains much information；Can be with as the internal machine of air-conditioner of slave computer
By information such as the timely feedback environment humitures of RS485 buses, 485 buses higher using data efficiency is sent, and 485 into
This is relatively low, and by data converter can compatible all support RS485 networks and CAN network internal-external machine, without special
Pairing, so as to solve the problem of air-conditioning internal-external machine communication efficiency of the prior art is low, realizes and quick and precisely efficiently enters
The communication of row air conditioner internal-external machine, and air conditioner internal-external machine good compatible network under different systems can be realized, make
Under heterogeneous networks in the outer machine matching versatility enhancing of machine, make internal-external machine configuration type selecting under different system more flexible.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this hair
Bright schematic description and description is used to explain the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the structural representation of air-conditioning internal-external machine communication equipment according to embodiments of the present invention；
Fig. 2 is a kind of structural representation of optional air-conditioning internal-external machine communication equipment according to embodiments of the present invention；
Fig. 3 is the structural representation of digital quantizer according to embodiments of the present invention；
Fig. 4 is the circuit diagram of RS485 data transmit-receive circuits according to embodiments of the present invention；
Fig. 5 is the circuit diagram of CAN data transmit-receive circuits according to embodiments of the present invention；
Fig. 6 is the flow chart of RS485 data transmit-receives according to embodiments of the present invention；And
Fig. 7 is the flow chart of CAN data transmit-receives according to embodiments of the present invention.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Fig. 1 is the structural representation of air-conditioning internal-external machine communication equipment according to embodiments of the present invention.As shown in figure 1, this sets
It is standby to include：CAN 10；RS485 buses 20；Data converter 30, air conditioner external 40 is turned by CAN and data
Parallel operation is connected, and internal machine of air-conditioner 50 is connected by RS485 buses with data converter, wherein, data converter is used to change
RS485 data and CAN data.
Using the present invention, the CAN data in CAN can be converted to by RS485 data by data converter, and
RS485 data in RS485 buses can be converted to CAN data, the conversion of RS485 data and CAN data be realized, in sky
Adjust and the communication equipment is used in device, be not to be communicated completely using RS485, or communicated completely using CAN, so as to avoid
RS485 is only used only in the prior art to communicate, traffic rate is slower and anti-interference and the problem of weaker data fault-tolerant ability,
And completely online using CAN network, the problem of transmission data efficiency is relatively low is avoided, but combines CAN and 485 buses
Advantage, use traffic rate high as the controller in the air conditioner external of host computer and the stronger CAN of antijamming capability be total
Line sends control information, status information to each indoor set and manual operator, contains much information；Can be with as the internal machine of air-conditioner of slave computer
By information such as the timely feedback environment humitures of RS485 buses, 485 buses higher using data efficiency is sent, and 485 into
This is relatively low, and by data converter can compatible all support RS485 networks and CAN network internal-external machine, without special
Pairing, so as to solve the problem of air-conditioning internal-external machine communication efficiency of the prior art is low, realizes and quick and precisely efficiently enters
The communication of row air conditioner internal-external machine, and air conditioner internal-external machine good compatible network under different systems can be realized, make
Under heterogeneous networks in the outer machine matching versatility enhancing of machine, make internal-external machine configuration type selecting under different system more flexible.
In the above-described embodiments, RS485 buses（RS485 buses i.e. in above-described embodiment）Cost is low, using the program
Communication cost can also be reduced.
According to the abovementioned embodiments of the present invention, as shown in Figures 2 and 3, data converter can include：CAN communication interface
31, it is connected with CAN 10, for transmitting CAN data；CAN data transmit-receives circuit 32, is connected with CAN communication interface 31, is used for
Receive and dispatch CAN data；RS485 interfaces 33, are connected with RS485 buses 20, for transmitting RS485 data；RS485 data transmit-receive circuits
34, it is connected with RS485 interfaces, for receiving and dispatching RS485 data；Main control chip 35, be connected to CAN data transmit-receives circuit 32 with
Between RS485 data transmit-receives circuit 34, for controlling CAN data transmit-receives circuit to receive and dispatch CAN data, and control RS485 data
Transmission circuit receives and dispatches RS485 data.
Specifically, as shown in Fig. 2 the data converter 30 possesses bi-directional data translation function, CAN 10 can be received
Outer machine status data convert thereof into RS485 data and be sent to internal machine of air-conditioner 50；Data converter 30 will can also be received
To the interior machine status datas of RS485 buses 20 be converted into CAN data and be sent to air conditioner external 40.As shown in Fig. 2 air conditioner
Outer machine 40 is not only communicated with internal machine of air-conditioner 50, can also be communicated with manual operator 60, in fig. 2, each air conditioner
Outer machine 40 can correspond to one or more internal machine of air-conditioner 50, namely the communication of air conditioner external 40 and internal machine of air-conditioner 50 can be with
Pass through one or more data converters 30.
As shown in figure 3, data converter 30 can also include：Power module 36, respectively with main control chip 35, CAN data
Transmission circuit 32 and RS485 data transmit-receives circuit 34 are connected, for for main control chip, CAN data transmit-receives circuit and RS485
Data transmit-receive circuit is powered.
Specifically, data converter also includes：Reset circuit 37, is connected with main control chip, for send reset signal with
Triggering main control chip control data converter returns back to original state.
As shown in figure 3, power module 36 is powered using low power consumption switch power supply, using the teaching of the invention it is possible to provide stable DC DC sources；It is main
Control chip 35 (MCU)：Main control chip embeds CAN function control devices and UART communication modules（Asynchronous receiving-transmitting transmitter）.
MAX13089 transponder chips can be used in RS485 data transmit-receives circuit 34 shown in Fig. 3, and in circuit
Signal output part increases two-way TVS diode, can Lightning proof, add the reliability of communication data.
CAN data transmit-receives circuit 32 in Fig. 3 can use nonpolarity switching circuit, specifically, can use IS01050
Transponder chip, this chip itself possesses signal isolation, it is not necessary to improve reliability using light-coupled isolation.
As shown in figure 4, RS485 data transmit-receives circuit can include：RS485 data transmit-receives chip 341；First transient voltage
Suppressor and the second Transient Voltage Suppressor, are connected to the signal port of RS485 data transmit-receive chips, in Fig. 4, RS485 numbers
There are three signal ports according to transmission circuit, the signal port can be used for transmitting data.
Specifically, RS485 data transmit-receives circuit includes：Current-limiting resistance, is connected to main control chip and the first transient voltage presses down
Between device processed.
As shown in figure 4, wherein the first Transient Voltage Suppressor（TVS1）With the second Transient Voltage Suppressor（TVS2）Can be with
It is anti-lightning strike, if when RS485 data transmit-receives circuit is used for multiplex communication not altogether, it is likely that cause TVS pipe to exist positive
Bias, so as to cause the damage of unidirectional TVS pipe, causes communication abnormality, therefore the first above-mentioned Transient Voltage Suppressor and the second wink
State voltage suppressor can select two-way TVS diode, and both direction can carry out clamper to voltage.
Specifically, current-limiting resistance is concatenated between RS485 data transmit-receives chip and main control chip in Fig. 4, can protected very well
I/O mouthfuls, prevent its short circuit；Multiple power supplys can be used in the circuit shown in Fig. 4（It is RS485 data transmit-receive cores such as using 5V
Piece is powered, powered using 12V power supply for I/O interfaces, and I/O interfaces are the signal port in above-described embodiment）For different electricity
Sub- component is powered, to strengthen the stability of the work of each electronic component in circuit.
More specifically, when communication distance is longer, can increase build-out resistor to improve communication quality between AB connections.
In the above embodiment of the present invention, CAN data transmit-receives circuit can include：CAN data transmit-receive chips；First electricity
Source isolation circuit, is connected between CAN data transmit-receives chip and main control chip；Second source isolation circuit, is connected to CAN data
Between transceiving chip and CAN communication interface；First build-out resistor, is connected between the first power isolation circuit and main control chip；
Second build-out resistor, is connected between second source isolation circuit and CAN communication interface.
Specifically, CAN data transmit-receives circuit includes：3rd Transient Voltage Suppressor, respectively with the first power isolation circuit,
Second source isolation circuit, the first build-out resistor and the connection of the second build-out resistor.
Further, CAN data transmit-receives circuit also includes：Polarity switching, matches electricity with main control chip, first respectively
Resistance and the connection of the second build-out resistor, polarity switching include：Relay；First triode, the first coil with relay
Connection；Second triode, is connected with the second coil of relay, wherein, by controlling the first triode and the second triode to exist
Not conducting control relay commutation in the same time.
As shown in figure 5, CAN data transmit-receives chip 321 can carry the CAN data transmit-receive chips of isolation features for TI
ISO1050, CAN data transmit-receive chip are identical with normal electrodeless chip, support the ISO11898 standards of standard.CAN data transmit-receives
Circuit can include：CAN data transmit-receives chip 321 and power isolation circuit 322, power isolation circuit can be two passages
The first power isolation circuit and second source isolation circuit in isolation circuit, i.e. above-described embodiment, specifically, can be by first
Power isolation circuit and second source isolation circuit are arranged on CAN data transmit-receive chips both sides, and two-way power isolation circuit can be with
Use two power supplys（The power supply of two+5V as illustrated）, same power supply can also be used.Using power isolation circuit it
Afterwards, other circuits of mainboard can be protected well in the case where extreme case occurs in CAN.
The TVS protection chips shown in Fig. 5（That is the 3rd Transient Voltage Suppressor 323）Can be NUP2105, the chip is
Two-way TVS chips, can improve EMI and antistatic capacity in high-speed CAN bus.Specifically, signal is first in CAN bus
First pass through and CAN data transmit-receive chips are entered back into after the protection of TVS chips, minimizing electrostatic protects the weakening to CAN data.
Specifically, CAN dipole inversion is in particular by relay two-way coil and 2 triodes（As shown in Fig. 5
Q1 and Q2）To realize, an adhesive direction of each coil control relay of relay.One kind is first selected by converter
Relay attracting state, if always can't detect signal in CAN, then just drive an other triode ON, make
Two keys relay J commutates.There is the relay that this programme is used magnetic to keep disconnecting coil electricity after function, therefore coil electricity 10mS
Source, relay contact can the preceding state of hold-in winding power-off.Specifically, by changing the polarity switching CAN of CAN data transmit-receive chips
The reiving/transmitting state of data transmit-receive circuit.GND in Fig. 5 is that the power supply of the two keys relay in ground connection symbol, Fig. 5 is also
+5V。
To achieve these goals, according to another aspect of the present invention there is provided a kind of air conditioner, the air conditioner includes：
Air conditioner external；One or more internal machine of air-conditioner；Air-conditioning internal-external machine communication equipment；Wherein, air conditioner external passes through CAN
It is connected with one or more data converters；Each data converter is connected by RS485 buses with internal machine of air-conditioner.
Using the present invention, the CAN data in CAN can be converted to by RS485 data by data converter, and
RS485 data in RS485 buses can be converted to CAN data, the conversion of RS485 data and CAN data be realized, in sky
Adjust and the communication equipment is used in device, be not to be communicated completely using RS485, or communicated completely using CAN, so as to avoid
RS485 is only used only in the prior art to communicate, traffic rate is slower and anti-interference and the problem of weaker data fault-tolerant ability,
And completely online using CAN network, the problem of transmission data efficiency is relatively low is avoided, but combines CAN and 485 buses
Advantage, use traffic rate high as the controller in the air conditioner external of host computer and the stronger CAN of antijamming capability be total
Line sends control information, status information to each indoor set and manual operator, contains much information；Can be with as the internal machine of air-conditioner of slave computer
By information such as the timely feedback environment humitures of RS485 buses, 485 buses higher using data efficiency is sent, and 485 into
This is relatively low, and by data converter can compatible all support RS485 networks and CAN network internal-external machine, without special
Pairing, so as to solve the problem of air-conditioning internal-external machine communication efficiency of the prior art is low, realizes and quick and precisely efficiently enters
The communication of row air conditioner internal-external machine, and air conditioner internal-external machine good compatible network under different systems can be realized, make
Under heterogeneous networks in the outer machine matching versatility enhancing of machine, make internal-external machine configuration type selecting under different system more flexible.
To achieve these goals, should according to another aspect of the present invention there is provided a kind of air-conditioning internal-external machine communication means
Method includes：The control information of air conditioner external is received by CAN；Control information is converted to RS485 by data converter
Data；RS485 buses are by RS485 data transfers to internal machine of air-conditioner and manual operator；RS485 buses receive internal machine of air-conditioner and hand
Grasp the feedback information of device；Feedback information is converted to CAN data by data converter；CAN data are back to air conditioner by CAN
Outer machine.
Using the present invention, the CAN data in CAN can be converted to by RS485 data by data converter, and
RS485 data in RS485 buses can be converted to CAN data, the conversion of RS485 data and CAN data be realized, in sky
Adjust and the communication equipment is used in device, be not to be communicated completely using RS485, or communicated completely using CAN, so as to avoid
RS485 is only used only in the prior art to communicate, traffic rate is slower and anti-interference and the problem of weaker data fault-tolerant ability,
And completely online using CAN network, the problem of transmission data efficiency is relatively low is avoided, but combines CAN and 485 buses
Advantage, use traffic rate high as the controller in the air conditioner external of host computer and the stronger CAN of antijamming capability be total
Line sends control information, status information to each indoor set and manual operator, contains much information；Can be with as the internal machine of air-conditioner of slave computer
By information such as the timely feedback environment humitures of RS485 buses, 485 buses higher using data efficiency is sent, and 485 into
This is relatively low, and by data converter can compatible all support RS485 networks and CAN network internal-external machine, without special
Pairing, so as to solve the problem of air-conditioning internal-external machine communication efficiency of the prior art is low, realizes and quick and precisely efficiently enters
The communication of row air conditioner internal-external machine, and air conditioner internal-external machine good compatible network under different systems can be realized, make
Under heterogeneous networks in the outer machine matching versatility enhancing of machine, make internal-external machine configuration type selecting under different system more flexible.
Fig. 6 shows the flow chart of RS485 data forwardings, as shown in fig. 6, RS485 data forwardings can include following step
Suddenly：
Step S601：Initialize UART interface.
Specifically, baud rate is set when initializing UART interface.
Step S602：Enable controls RS485 data transmit-receives chip to be output state.
Step S603：The control signal of air conditioner external is sent to corresponding internal machine of air-conditioner.
Step S604：Enable controls RS485 data transmit-receives chip to be input state.
Step S605：Judge whether to receive the reply data of interior machine.
Wherein, in the case where receiving the reply data of interior machine, step S606 is performed：The reply data of machine in caching；
In the case where being not received by reply data, step S607 is performed.
Step S607：Control the input state delay 100MS of RS485 data transmit-receive chips.
Step S608：Enable controls RS485 data transmit-receives chip to be output state.
Step S609：The control signal of air conditioner external is sent to corresponding manual operator.
Wherein, control signal is that can include the shape of outer machine in the control information in above-described embodiment, the control signal
State.
Step S610：Enable controls RS485 data transmit-receives chip to be input state.
Step S611：Judge whether to receive the reply data of manual operator.
Wherein, in the case where receiving the reply data of manual operator, step S612 is performed：Cache the reply number of manual operator
According to；In the case where being not received by reply data, step S613 is performed.
Step S613：Control the input state delay 100MS of RS485 data transmit-receive chips.
Step S614：Enable controls RS485 data transmit-receives chip to be output state.
The reply data of interior machine and manual operator are obtained by machine in the roll-call of above-mentioned steps converter cycle and manual operator, and
Buffer area is set, the reply data of interior machine and manual operator are preserved to buffer area.
Step S615：The status data of the outer machine of forwarding is to interior machine and manual operator.
Step S616：Control the input state delay 100MS of RS485 data transmit-receive chips.
Specifically, by reading the outer machine control data of buffer area, the status data of the external machine of converter carries out agreement and turned
Change processing, and this data is sent on RS486 signal wires.
Wherein, the reply data in the present embodiment are the feedback information in above-described embodiment.
More specifically, the outer machine status datas of RS485 are forwarded, it is necessary to read the outer machine status data of CAN network side, and it is right
Data carry out logical process, so as to which compatibility RS485 procotols, this process is not only that data are changed, also wrap
Include and logic and agreement are changed.
Fig. 7 shows the flow chart of CAN data forwardings, as shown in fig. 7, RS485 data forwardings may include steps of：
Step S701：Initialize CAN interface.Specifically, system electrification initialization CAN interface, sets baud rate.
Step S702：Detect whether to receive the synchronous frame data of CAN.
Wherein, in the case where receiving the synchronous frame data of CAN, step S703 is performed；It is being not received by CAN
In the case of the synchronous frame data of bus, step S704 is performed.
Step S703：Read the reply data of machine and manual operator in RS485.
Step S704：Switch the polarity of CAN data transmit-receive circuits.
Specifically, with the 3 seconds polarity for periodic conversion CAN data transmit-receive circuits.
More specifically, converter judges whether to receive bus synchronous frame data, using 3S as the cycle if being not received by
Carry out dipole inversion.
Step S705：The reply data of machine in RS485 and manual operator are converted into CAN data.
Step S706：To CAN send in machine and manual operator reply data.
Step S707：The status data of outer machine in the CAN received is stored in buffer area by converter.
Specifically, the reply data of machine and manual operator in changing, can be grasped by reading the interior machine and hand of RS485 network sides
The reply data of device, and logical process is carried out to data, so as to which compatible CAN network agreement, this process not only includes
Data are changed, and including the conversion to logic and agreement.
It should be noted that can be in such as one group computer executable instructions the step of the flow of accompanying drawing is illustrated
Performed in computer system, and, although logical order is shown in flow charts, but in some cases, can be with not
The order being same as herein performs shown or described step.
To achieve these goals, should according to another aspect of the present invention there is provided a kind of air-conditioning internal-external machine communicator
Device can include：First receiving module, the control information for receiving air conditioner external by CAN；First modulus of conversion
Block, RS485 data are converted to for data converter by control information；First transport module, for RS485 buses by RS485
Data transfer is to internal machine of air-conditioner and manual operator；Second receiving module, internal machine of air-conditioner and manual operator are received for RS485 buses
Feedback information；Second modular converter, CAN data are converted to for data converter by feedback information；Module is returned, is used for
CAN data are back to air conditioner external by CAN.
Using the present invention, the CAN data in CAN can be converted to by RS485 data by data converter, and
RS485 data in RS485 buses can be converted to CAN data, the conversion of RS485 data and CAN data be realized, in sky
Adjust and the communication equipment is used in device, be not to be communicated completely using RS485, or communicated completely using CAN, so as to avoid
RS485 is only used only in the prior art to communicate, traffic rate is slower and anti-interference and the problem of weaker data fault-tolerant ability,
And completely online using CAN network, the problem of transmission data efficiency is relatively low is avoided, but combines CAN and 485 buses
Advantage, use traffic rate high as the controller in the air conditioner external of host computer and the stronger CAN of antijamming capability be total
Line sends control information, status information to each indoor set and manual operator, contains much information；Can be with as the internal machine of air-conditioner of slave computer
By information such as the timely feedback environment humitures of RS485 buses, 485 buses higher using data efficiency is sent, and 485 into
This is relatively low, and by data converter can compatible all support RS485 networks and CAN network internal-external machine, without special
Pairing, so as to solve the problem of air-conditioning internal-external machine communication efficiency of the prior art is low, realizes and quick and precisely efficiently enters
The communication of row air conditioner internal-external machine, and air conditioner internal-external machine good compatible network under different systems can be realized, make
Under heterogeneous networks in the outer machine matching versatility enhancing of machine, make internal-external machine configuration type selecting under different system more flexible.
As can be seen from the above description, the present invention realizes following technique effect：Using the present invention, pass through data
Converter can be converted to the CAN data in CAN RS485 data, and can be by the RS485 numbers in RS485 buses
According to CAN data are converted to, the conversion of RS485 data and CAN data is realized, the communication equipment is used in air conditioner, is not
Communicated, or communicated completely using CAN using RS485 completely, so as to avoid only logical using only RS485 in the prior art
News, traffic rate is slower and anti-interference and the problem of weaker data fault-tolerant ability, and avoids and use CAN network completely
It is online, the problem of data efficiency is relatively low is sent, but the advantage of CAN and 485 buses is combined, it is used as the air conditioner of host computer
Controller in outer machine is sent using traffic rate height and the stronger CAN of antijamming capability to each indoor set and manual operator to be controlled
Information processed, status information, contain much information；It can pass through the timely feedback environment of RS485 buses as the internal machine of air-conditioner of slave computer
The information such as humiture, 485 buses higher using data efficiency is sent, and 485 cost is relatively low, and pass through data converter
Can compatible all supports RS485 networks and CAN network internal-external machine, without specially matching, so as to solve in the prior art
Air-conditioning internal-external machine communication efficiency it is low the problem of, realize quick and precisely efficiently carry out air conditioner internal-external machine communication, and
Air conditioner internal-external machine good compatible network under different systems can be realized so that the outer machine matching of machine is logical under heterogeneous networks
Strengthened with property, make internal-external machine configuration type selecting under different system more flexible.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general
Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and constituted
Network on, alternatively, the program code that they can be can perform with computing device be realized, it is thus possible to they are stored
Performed in the storage device by computing device, either they are fabricated to respectively each integrated circuit modules or by they
In multiple modules or step single integrated circuit module is fabricated to realize.So, the present invention is not restricted to any specific
Hardware and software is combined.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (12)
1. a kind of air-conditioning internal-external machine communication equipment, it is characterised in that including：
CAN；
RS485 buses；
Data converter, air conditioner external is connected by the CAN with the data converter, and internal machine of air-conditioner passes through institute
State RS485 buses to be connected with the data converter, manual operator is connected by the RS485 buses with the data converter,
Wherein, the data converter is used to change RS485 data and CAN data.
2. air-conditioning internal-external machine communication equipment according to claim 1, it is characterised in that the data converter includes：
CAN communication interface, is connected with the CAN, for transmitting the CAN data；
CAN data transmit-receive circuits, are connected with the CAN communication interface, for receiving and dispatching the CAN data；
RS485 interfaces, are connected with the RS485 buses, for transmitting the RS485 data；
RS485 data transmit-receive circuits, are connected with the RS485 interfaces, for receiving and dispatching the RS485 data；
Main control chip, is connected between the CAN data transmit-receives circuit and the RS485 data transmit-receives circuit, for controlling
State CAN data transmit-receives circuit and receive and dispatch the CAN data, and control the RS485 data transmit-receives circuit to receive and dispatch the RS485 numbers
According to.
3. air-conditioning internal-external machine communication equipment according to claim 2, it is characterised in that the data converter also includes：
Power module, respectively with the main control chip, the CAN data transmit-receives circuit and the RS485 data transmit-receives circuit
Connection, for being powered for the main control chip, the CAN data transmit-receives circuit and the RS485 data transmit-receives circuit.
4. air-conditioning internal-external machine communication equipment according to claim 2, it is characterised in that the data converter also includes：
Reset circuit, is connected with the main control chip, and the number is controlled to trigger the main control chip for sending reset signal
Original state is returned back to according to converter.
5. air-conditioning internal-external machine communication equipment according to claim 2, it is characterised in that the RS485 data transmit-receives circuit
Including：
RS485 data transmit-receive chips；
First Transient Voltage Suppressor and the second Transient Voltage Suppressor, are connected to the signal of the RS485 data transmit-receives chip
On port.
6. air-conditioning internal-external machine communication equipment according to claim 5, it is characterised in that the RS485 data transmit-receives circuit
Including：
Current-limiting resistance, is connected between the main control chip and first Transient Voltage Suppressor.
7. air-conditioning internal-external machine communication equipment according to claim 2, it is characterised in that the CAN data transmit-receives circuit bag
Include：
CAN data transmit-receive chips；
First power isolation circuit, is connected between the CAN data transmit-receives chip and the main control chip；
Second source isolation circuit, is connected between the CAN data transmit-receives chip and the CAN communication interface；
First build-out resistor, is connected between first power isolation circuit and the main control chip；
Second build-out resistor, is connected between the second source isolation circuit and the CAN communication interface.
8. air-conditioning internal-external machine communication equipment according to claim 7, it is characterised in that the CAN data transmit-receives circuit bag
Include：
3rd Transient Voltage Suppressor, respectively with first power isolation circuit, the second source isolation circuit, described
One build-out resistor and second build-out resistor connection.
9. air-conditioning internal-external machine communication equipment according to claim 7, it is characterised in that the CAN data transmit-receives circuit is also
Including：
Polarity switching, is connected with the main control chip, first build-out resistor and second build-out resistor respectively,
The polarity switching includes：
Relay；
First triode, is connected with the first coil of the relay；
Second triode, is connected with the second coil of the relay,
Wherein, by controlling first triode and second triode conducting does not control the relay to change in the same time
To switch the reiving/transmitting state of the CAN data transmit-receives circuit.
10. a kind of air conditioner, it is characterised in that including：
Air conditioner external；
One or more internal machine of air-conditioner；
Air-conditioning internal-external machine communication equipment in claim 1 to 9 described in any one；
Wherein, the air conditioner external is connected by CAN with one or more data converters；Each data conversion
Device is connected by RS485 buses with the internal machine of air-conditioner.
11. a kind of air-conditioning internal-external machine communication means, it is characterised in that including：
The control information of air conditioner external is received by CAN；
The control information is converted to RS485 data by data converter；
RS485 buses are by the RS485 data transfers to internal machine of air-conditioner and manual operator；
The RS485 buses receive the feedback information of the internal machine of air-conditioner and the manual operator；
The feedback information is converted to CAN data by the data converter；
The CAN data are back to the air conditioner external by the CAN.
12. a kind of air-conditioning internal-external machine communicator, it is characterised in that including：
First receiving module, the control information for receiving air conditioner external by CAN；
First modular converter, RS485 data are converted to for data converter by the control information；
First transport module, for RS485 buses by the RS485 data transfers to internal machine of air-conditioner and manual operator；
Second receiving module, the feedback information of the internal machine of air-conditioner and the manual operator is received for the RS485 buses；
Second modular converter, CAN data are converted to for the data converter by the feedback information；
Module is returned, the CAN data are back to the air conditioner external for the CAN.
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| CN201310705312.8A CN104728988B (en) | 2013-12-18 | 2013-12-18 | Air conditioner and air-conditioning internal-external machine communication means, device, equipment |
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|---|---|---|---|
| CN201310705312.8A CN104728988B (en) | 2013-12-18 | 2013-12-18 | Air conditioner and air-conditioning internal-external machine communication means, device, equipment |
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| CN104728988B true CN104728988B (en) | 2017-08-01 |
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