CN203605405U - Air conditioner and communication device of air conditioner internal unit and air conditioner external unit - Google Patents
Air conditioner and communication device of air conditioner internal unit and air conditioner external unit Download PDFInfo
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- CN203605405U CN203605405U CN201320843824.6U CN201320843824U CN203605405U CN 203605405 U CN203605405 U CN 203605405U CN 201320843824 U CN201320843824 U CN 201320843824U CN 203605405 U CN203605405 U CN 203605405U
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Abstract
The utility model discloses an air conditioner and a communication device of an air conditioner internal unit and an air conditioner external unit. The communication device comprises a CAN bus, an RS485 bus and a data converter, wherein the air conditioner external unit is connected with the data converter through the CAN bus, the air conditioner internal unit is connected with the data converter through the RS485 bus, and the data converter is used for conversion between RS485 data and CAN data. By the means of the air conditioner and the communication device of the air conditioner internal unit and the air conditioner external unit, the problem that an air conditioner internal unit and an air conditioner external unit in the prior art are low in communication efficiency is solved, rapid, accurate and efficient communication between the air conditioner internal unit and the air conditioner external unit is realized, the air conditioner internal unit and the air conditioner external unit can be well compatible with networks in different systems, as a result, the matching universality of the air conditioner internal unit and the air conditioner external unit in different networks is enhanced, and configuration type selection of the air conditioner internal unit and the air conditioner external unit in the different systems is more flexible.
Description
Technical field
The utility model relates to air-conditioning control field, in particular to machine communication equipment inside and outside a kind of air-conditioner and air-conditioning.
Background technology
In multi-connected machine system, use RS485 network multi-connected machine completely, traffic rate is slower, and anti-interference and data fault-tolerant ability a little less than, comparatively difficulty is upgraded in agreement upgrading; And use CAN network multi-connected machine completely, although traffic rate and antijamming capability have very large lifting, owing to limited by network characteristic own, it is less that every frame sends valid data byte number, therefore sends data efficiency lower.
Particularly, CAN(control area net（CAN）) be serial communication, can effectively support to have the very distribution of high safety grade and control in real time.CAN and RS485 communication characteristic are more as shown in table 1.
Table 1
And if adopt under different system communication network different system machine inside and outside air-conditioning to mate in same system.
For the low problem of machine communication efficiency inside and outside air-conditioning in prior art, effective solution is not yet proposed at present.
Utility model content
For the low problem of machine communication efficiency inside and outside air-conditioning in correlation technique, effective solution is not yet proposed at present, for this reason, main purpose of the present utility model is to provide a kind of air-conditioner and the inside and outside machine communication equipment of air-conditioning, to address the above problem.
To achieve these goals, according to an aspect of the present utility model, provide a kind of air-conditioning inside and outside machine communication equipment, this equipment comprises: CAN bus; RS485 bus; Data converter, the outer machine of air-conditioner is connected with data converter by CAN bus, and internal machine of air-conditioner is connected with data converter by RS485 bus, and wherein, data converter is used for changing RS485 data and CAN data.
Further, data converter comprises: CAN communication interface, is connected with CAN bus, for transmitting CAN data; CAN data transmit-receive circuit, is connected with CAN communication interface, for receiving and dispatching CAN data; RS485 interface, is connected with RS485 bus, for transmitting RS485 data; RS485 data transmit-receive circuit, is connected with RS485 interface, for receiving and dispatching RS485 data; Main control chip, is connected between CAN data transmit-receive circuit and RS485 data transmit-receive circuit, for controlling CAN data transmit-receive circuit transmitting-receiving CAN data, and controls RS485 data transmit-receive circuit transmitting-receiving RS485 data.
Further, data converter also comprises: power module, be connected with main control chip, CAN data transmit-receive circuit and RS485 data transmit-receive circuit respectively, and be used to main control chip, CAN data transmit-receive circuit and RS485 data transmit-receive circuit supply.
Further, data converter also comprises: reset circuit, be connected with main control chip, and return back to original state for sending reset signal to trigger main control chip control data converter.
Further, RS485 data transmit-receive circuit comprises: RS485 data transmit-receive chip; The first Transient Voltage Suppressor and the second Transient Voltage Suppressor, be connected on the signal port of RS485 data transmit-receive chip.
Further, RS485 data transmit-receive circuit comprises: current-limiting resistance, is connected between main control chip and the first Transient Voltage Suppressor.
Further, CAN data transmit-receive circuit comprises: CAN data transmit-receive chip; The first power isolation circuit, is connected between CAN data transmit-receive chip and main control chip; Second source buffer circuit, is connected between CAN data transmit-receive chip and CAN communication interface; The first build-out resistor, is connected between the first power isolation circuit and main control chip; The second build-out resistor, is connected between second source buffer circuit and CAN communication interface.
Further, CAN data transmit-receive circuit comprises: the 3rd Transient Voltage Suppressor, is connected with the first power isolation circuit, second source buffer circuit, the first build-out resistor and the second build-out resistor respectively.
Further, CAN data transmit-receive circuit also comprises: polarity switching, be connected with main control chip, the first build-out resistor and the second build-out resistor respectively, and polarity switching comprises: relay; The first triode, is connected with the first coil of relay; The second triode, is connected with the second coil of relay, wherein, and by controlling the first triode and the second triode in not conducting control relay commutation in the same time, to switch the reiving/transmitting state of CAN data transmit-receive circuit.
To achieve these goals, according on the other hand of the present utility model, provide a kind of air-conditioner, this air-conditioner comprises: the outer machine of air-conditioner; One or more internal machine of air-conditioners; The inside and outside machine communication equipment of air-conditioning; Wherein, the outer machine of air-conditioner is connected with one or more data converters by CAN bus; Each data converter is connected with internal machine of air-conditioner by RS485 bus.
Adopt the utility model, CAN data in CAN bus can be converted to RS485 data by data converter, and the RS485 data in RS485 bus can be converted to CAN data, realize the conversion of RS485 data and CAN data, in air-conditioner, use this communication equipment, not to use RS485 communication completely, or use CAN to carry out communication completely, thereby avoid only using in prior art RS485 communication, traffic rate is slower, and the problem anti-interference and data fault-tolerant ability is weak, and avoid using completely CAN network on-line, send the lower problem of data efficiency, but in conjunction with the advantage of CAN bus and 485 buses, use traffic rate CAN bus high and that antijamming capability is stronger to send control information to each indoor set and manual operator as the controller in the outer machine of air-conditioner of host computer, status information, contain much information, internal machine of air-conditioner as slave computer can be by information such as the timely feedback environment humitures of RS485 bus, adopt and send 485 higher buses of data efficiency, and 485 cost is lower, and by data converter can compatible all supports RS485 networks and CAN network inside and outside machine, need not match specially, thereby solve the inside and outside low problem of machine communication efficiency of air-conditioning of the prior art, realize the communication of quick and precisely carrying out efficiently the inside and outside machine of air-conditioner, and can realize the inside and outside machine of air-conditioner good compatible network under different systems, in making under heterogeneous networks, the outer machine coupling of machine versatility strengthens, inside and outside making under different system, machine configuration type selecting is more flexible.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, forms the application's a part, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is according to the structural representation of machine communication equipment inside and outside the air-conditioning of the utility model embodiment;
Fig. 2 is according to the structural representation of machine communication equipment inside and outside a kind of optional air-conditioning of the utility model embodiment;
Fig. 3 is according to the structural representation of the digital quantizer of the utility model embodiment;
Fig. 4 is according to the circuit diagram of the RS485 data transmit-receive circuit of the utility model embodiment;
Fig. 5 is according to the circuit diagram of the CAN data transmit-receive circuit of the utility model embodiment;
Fig. 6 is according to the flow chart of the RS485 data transmit-receive of the utility model embodiment; And
Fig. 7 is according to the flow chart of the CAN data transmit-receive of the utility model embodiment.
The specific embodiment
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
Fig. 1 is according to the structural representation of machine communication equipment inside and outside the air-conditioning of the utility model embodiment.As shown in Figure 1, this equipment can comprise: CAN bus 10; RS485 bus 20; Data converter 30, the outer machine 40 of air-conditioner is connected with data converter by CAN bus, and internal machine of air-conditioner 50 is connected with data converter by RS485 bus, and wherein, data converter is used for changing RS485 data and CAN data.
Adopt the utility model, CAN data in CAN bus can be converted to RS485 data by data converter, and the RS485 data in RS485 bus can be converted to CAN data, realize the conversion of RS485 data and CAN data, in air-conditioner, use this communication equipment, not to use RS485 communication completely, or use CAN to carry out communication completely, thereby avoid only using in prior art RS485 communication, traffic rate is slower, and the problem anti-interference and data fault-tolerant ability is weak, and avoid using completely CAN network on-line, send the lower problem of data efficiency, but in conjunction with the advantage of CAN bus and 485 buses, use traffic rate CAN bus high and that antijamming capability is stronger to send control information to each indoor set and manual operator as the controller in the outer machine of air-conditioner of host computer, status information, contain much information, internal machine of air-conditioner as slave computer can be by information such as the timely feedback environment humitures of RS485 bus, adopt and send 485 higher buses of data efficiency, and 485 cost is lower, and by data converter can compatible all supports RS485 networks and CAN network inside and outside machine, need not match specially, thereby solve the inside and outside low problem of machine communication efficiency of air-conditioning of the prior art, realize the communication of quick and precisely carrying out efficiently the inside and outside machine of air-conditioner, and can realize the inside and outside machine of air-conditioner good compatible network under different systems, in making under heterogeneous networks, the outer machine coupling of machine versatility strengthens, inside and outside making under different system, machine configuration type selecting is more flexible.
In the above-described embodiments, RS485 bus (being the RS485 bus in above-described embodiment) cost is low, adopts this scheme can also reduce communication cost.
According to above-described embodiment of the present utility model, as shown in Figures 2 and 3, data converter can comprise: CAN communication interface 31, is connected with CAN bus 10, for transmitting CAN data; CAN data transmit-receive circuit 32, is connected with CAN communication interface 31, for receiving and dispatching CAN data; RS485 interface 33, is connected with RS485 bus 20, for transmitting RS485 data; RS485 data transmit-receive circuit 34, is connected with RS485 interface, for receiving and dispatching RS485 data; Main control chip 35, is connected between CAN data transmit-receive circuit 32 and RS485 data transmit-receive circuit 34, for controlling CAN data transmit-receive circuit transmitting-receiving CAN data, and controls RS485 data transmit-receive circuit transmitting-receiving RS485 data.
Particularly, as shown in Figure 2, this data converter 30 possesses bi-directional data translation function, and the outer machine status data that can receive CAN bus 10 converts thereof into RS485 data and sends to internal machine of air-conditioner 50; Data converter 30 can also convert the interior machine status data of the RS485 bus 20 receiving to CAN data and send to the outer machine 40 of air-conditioner.As shown in Figure 2, the outer machine 40 of air-conditioner not only carries out communication with internal machine of air-conditioner 50, can also carry out communication with manual operator 60, in Fig. 2, the outer machine 40 of each air-conditioner can corresponding one or more internal machine of air-conditioners 50, are also that the outer machine 40 of air-conditioner can pass through one or more data converters 30 with the communication of internal machine of air-conditioner 50.
As shown in Figure 3, data converter 30 can also comprise: power module 36, be connected with main control chip 35, CAN data transmit-receive circuit 32 and RS485 data transmit-receive circuit 34 respectively, be used to main control chip, CAN data transmit-receive circuit and RS485 data transmit-receive circuit supply.
Particularly, data converter also comprises: reset circuit 37, be connected with main control chip, and return back to original state for sending reset signal to trigger main control chip control data converter.
As shown in Figure 3, power module 36 adopts the power supply of low-power consumption Switching Power Supply, and stable DC DC source can be provided; Main control chip 35 (MCU): the embedded CAN function control device of main control chip and UART communication module (asynchronous receiving-transmitting transmitter).
In RS485 data transmit-receive circuit 34 shown in Fig. 3, can adopt MAX13089 transponder chip, and increase two-way TVS diode at the signal output part of circuit, can Lightning proof, increase the reliability of communication data.
CAN data transmit-receive circuit 32 in Fig. 3 can adopt nonpolarity commutation circuit, particularly, can adopt IS01050 transponder chip, and this chip self possesses signal isolation, does not need to adopt light-coupled isolation to improve reliability.
As shown in Figure 4, RS485 data transmit-receive circuit can comprise: RS485 data transmit-receive chip 341; The first Transient Voltage Suppressor and the second Transient Voltage Suppressor, be connected to the signal port of RS485 data transmit-receive chip, and in Fig. 4, RS485 data transmit-receive circuit has three signal ports, and this signal port can be for transmission data.
Particularly, RS485 data transmit-receive circuit comprises: current-limiting resistance, is connected between main control chip and the first Transient Voltage Suppressor.
As shown in Figure 4, wherein the first Transient Voltage Suppressor (TVS1) and the second Transient Voltage Suppressor (TVS2) can be anti-lightning strike, if when RS485 data transmit-receive circuit when the multiplex communication not altogether, likely cause TVS pipe to have forward bias, thereby cause the damage of unidirectional TVS pipe, cause communication abnormality, therefore the first above-mentioned Transient Voltage Suppressor and the second Transient Voltage Suppressor can be selected two-way TVS diode, both direction can carry out clamper to voltage.
Particularly, in Fig. 4, between RS485 data transmit-receive chip and main control chip, be connected in series current-limiting resistance, can fine protection I/O mouth, prevent its short circuit; In the circuit shown in Fig. 4, can use multiple power supplys (as use 5V for RS485 data transmit-receive chip power supply, to use the power supply of 12V be I/O interface power supply, I/O interface is the signal port in above-described embodiment) for different electronic devices and components power supplies, with the stability of each electronic devices and components work in intensifier circuit.
More specifically, in the time that communication distance is longer, between AB connection, can increase build-out resistor to improve communication quality.
In above-described embodiment of the present utility model, CAN data transmit-receive circuit can comprise: CAN data transmit-receive chip; The first power isolation circuit, is connected between CAN data transmit-receive chip and main control chip; Second source buffer circuit, is connected between CAN data transmit-receive chip and CAN communication interface; The first build-out resistor, is connected between the first power isolation circuit and main control chip; The second build-out resistor, is connected between second source buffer circuit and CAN communication interface.
Particularly, CAN data transmit-receive circuit comprises: the 3rd Transient Voltage Suppressor, is connected with the first power isolation circuit, second source buffer circuit, the first build-out resistor and the second build-out resistor respectively.
Further, CAN data transmit-receive circuit also comprises: polarity switching, be connected with main control chip, the first build-out resistor and the second build-out resistor respectively, and polarity switching comprises: relay; The first triode, is connected with the first coil of relay; The second triode, is connected with the second coil of relay, wherein, and by controlling the first triode and the second triode in not conducting control relay commutation in the same time.
As shown in Figure 5, CAN data transmit-receive chip 321 can be the CAN data transmit-receive chip I SO1050 of TI with isolation features, and CAN data transmit-receive chip is identical with normal electrodeless chip, supports the ISO11898 standard of standard.CAN data transmit-receive circuit can comprise: CAN data transmit-receive chip 321 and power isolation circuit 322, power isolation circuit can be the buffer circuit of two passages, be the first power isolation circuit and the second source buffer circuit in above-described embodiment, particularly, the first power isolation circuit and second source buffer circuit can be arranged on to CAN data transmit-receive chip both sides, two-way power isolation circuit can use two power supplys (power supply of two+5V shown in figure), also can use same power supply.After using power isolation circuit, can there are good other circuit of protection mainboard under extreme case in CAN bus.
TVS protection chip (i.e. the 3rd Transient Voltage Suppressor 323) shown in Fig. 5 can be NUP2105, and this chip is two-way TVS chip, can in high-speed CAN bus, improve EMI and antistatic capacity.Particularly, in the bus of CAN, first signal enters CAN data transmit-receive chip after the protection of TVS chip again, reduces the weakening of electrostatic defending to CAN data.
Particularly, the conversion of CAN polarity of bus realizes by relay two-way coil and 2 triodes (Q1 and Q2 as shown in Figure 5) particularly, an adhesive direction of each coil control relay of relay.By first selected a kind of relay attracting state of converter, if always can't detect signal in CAN bus, so just drive an other triode conducting, make two keys relay J commutation.The relay that this programme adopts has magnetic and keeps function, therefore after coil electricity 10mS, disconnects coil power, and relay contact can the front state of hold-in winding power-off.Particularly, switch the reiving/transmitting state of CAN data transmit-receive circuit by the polarity of conversion CAN data transmit-receive chip.GND in Fig. 5 is ground connection symbol, and the power supply of the two keys relay in Fig. 5 is also+5V.
To achieve these goals, according on the other hand of the present utility model, provide a kind of air-conditioner, this air-conditioner comprises: the outer machine of air-conditioner; One or more internal machine of air-conditioners; The inside and outside machine communication equipment of air-conditioning; Wherein, the outer machine of air-conditioner is connected with one or more data converters by CAN bus; Each data converter is connected with internal machine of air-conditioner by RS485 bus.
Adopt the utility model, CAN data in CAN bus can be converted to RS485 data by data converter, and the RS485 data in RS485 bus can be converted to CAN data, realize the conversion of RS485 data and CAN data, in air-conditioner, use this communication equipment, not to use RS485 communication completely, or use CAN to carry out communication completely, thereby avoid only using in prior art RS485 communication, traffic rate is slower, and the problem anti-interference and data fault-tolerant ability is weak, and avoid using completely CAN network on-line, send the lower problem of data efficiency, but in conjunction with the advantage of CAN bus and 485 buses, use traffic rate CAN bus high and that antijamming capability is stronger to send control information to each indoor set and manual operator as the controller in the outer machine of air-conditioner of host computer, status information, contain much information, internal machine of air-conditioner as slave computer can be by information such as the timely feedback environment humitures of RS485 bus, adopt and send 485 higher buses of data efficiency, and 485 cost is lower, and by data converter can compatible all supports RS485 networks and CAN network inside and outside machine, need not match specially, thereby solve the inside and outside low problem of machine communication efficiency of air-conditioning of the prior art, realize the communication of quick and precisely carrying out efficiently the inside and outside machine of air-conditioner, and can realize the inside and outside machine of air-conditioner good compatible network under different systems, in making under heterogeneous networks, the outer machine coupling of machine versatility strengthens, inside and outside making under different system, machine configuration type selecting is more flexible.
To achieve these goals, according on the other hand of the present utility model, provide a kind of air-conditioning inside and outside machine communication means, the method comprises: receive the control information of the outer machine of air-conditioner by CAN bus; Control information is converted to RS485 data by data converter; RS485 bus by RS485 transfer of data to internal machine of air-conditioner and manual operator; RS485 bus receives the feedback information of internal machine of air-conditioner and manual operator; Feedback information is converted to CAN data by data converter; CAN data are back to the outer machine of air-conditioner by CAN bus.
Adopt the utility model, CAN data in CAN bus can be converted to RS485 data by data converter, and the RS485 data in RS485 bus can be converted to CAN data, realize the conversion of RS485 data and CAN data, in air-conditioner, use this communication equipment, not to use RS485 communication completely, or use CAN to carry out communication completely, thereby avoid only using in prior art RS485 communication, traffic rate is slower, and the problem anti-interference and data fault-tolerant ability is weak, and avoid using completely CAN network on-line, send the lower problem of data efficiency, but in conjunction with the advantage of CAN bus and 485 buses, use traffic rate CAN bus high and that antijamming capability is stronger to send control information to each indoor set and manual operator as the controller in the outer machine of air-conditioner of host computer, status information, contain much information, internal machine of air-conditioner as slave computer can be by information such as the timely feedback environment humitures of RS485 bus, adopt and send 485 higher buses of data efficiency, and 485 cost is lower, and by data converter can compatible all supports RS485 networks and CAN network inside and outside machine, need not match specially, thereby solve the inside and outside low problem of machine communication efficiency of air-conditioning of the prior art, realize the communication of quick and precisely carrying out efficiently the inside and outside machine of air-conditioner, and can realize the inside and outside machine of air-conditioner good compatible network under different systems, in making under heterogeneous networks, the outer machine coupling of machine versatility strengthens, inside and outside making under different system, machine configuration type selecting is more flexible.
Fig. 6 shows the flow chart of RS485 data retransmission, and as shown in Figure 6, RS485 data retransmission can comprise the steps:
Step S601: initialize UART interface.
Particularly, baud rate is set in the time initializing UART interface.
Step S602: enabling to control RS485 data transmit-receive chip is output state.
Step S603: the control signal of the outer machine of air-conditioner is sent to corresponding internal machine of air-conditioner.
Step S604: enabling to control RS485 data transmit-receive chip is input state.
Step S605: the reply data that judge whether to receive interior machine.
Wherein, in the case of the reply data that receive interior machine, execution step S606: the reply data of machine in buffer memory; In the situation that not receiving reply data, execution step S607.
Step S607: the input state time delay 100MS that controls RS485 data transmit-receive chip.
Step S608: enabling to control RS485 data transmit-receive chip is output state.
Step S609: the control signal of the outer machine of air-conditioner is sent to corresponding manual operator.
Wherein, control signal is the control information in above-described embodiment, can comprise the state of outer machine in this control signal.
Step S610: enabling to control RS485 data transmit-receive chip is input state.
Step S611: the reply data that judge whether to receive manual operator.
Wherein, in the case of the reply data that receive manual operator, execution step S612: the reply data of buffer memory manual operator; In the situation that not receiving reply data, execution step S613.
Step S613: the input state time delay 100MS that controls RS485 data transmit-receive chip.
Step S614: enabling to control RS485 data transmit-receive chip is output state.
In calling the roll by the circulation of above-mentioned steps converter, machine and manual operator obtain the reply data of interior machine and manual operator, and buffer area is set, and the reply data of interior machine and manual operator are saved in buffer area.
Step S615: forward the status data of outer machine to interior machine and manual operator.
Step S616: the input state time delay 100MS that controls RS485 data transmit-receive chip.
Particularly, by reading the outer machine control data of buffer area, the status data of the external machine of converter carries out protocol conversion process, and sends this data on RS486 holding wire.
Wherein, the reply data in the present embodiment are the feedback information in above-described embodiment.
More specifically, forward the outer machine status data of RS485, need to read the outer machine status data of CAN network side, and data are carried out to logical process, so that can compatible RS485 procotol, this process be not only that data are changed, and also comprises logic and agreement are changed.
Fig. 7 shows the flow chart of CAN data retransmission, and as shown in Figure 7, RS485 data retransmission can comprise the steps:
Step S701: initialize CAN interface.Particularly, system power-up initializing CAN interface, arranges baud rate.
Step S702: detect the synchronization frame data that whether receive CAN bus.
Wherein, in the case of the synchronization frame data that receive CAN bus, execution step S703; In the case of the synchronization frame data that do not receive CAN bus, execution step S704.
Step S703: the reply data that read the interior machine of RS485 and manual operator.
Step S704: the polarity of switching CAN data transmit-receive circuit.
Particularly, take the 3 seconds polarity as periodic conversion CAN data transmit-receive circuit.
More specifically, converter judges whether to receive bus synchronous frame data, carries out polarity conversion take 3S as the cycle if do not receive.
Step S705: the reply data of machine in RS485 and manual operator are converted to CAN data.
Step S706: the reply data of machine and manual operator in sending to CAN bus.
Step S707: converter deposits the status data of the upper outside machine of CAN bus receiving in buffer area.
Particularly, the reply data of machine and manual operator in conversion, can be by reading the reply data of interior machine and manual operator of RS485 network side, and data are carried out to logical process, so that can compatible CAN procotol, this process not only comprises data is changed, and comprises the conversion to logic and agreement.
It should be noted that, can in the computer system such as one group of computer executable instructions, carry out in the step shown in the flow chart of accompanying drawing, and, although there is shown logical order in flow process, but in some cases, can carry out shown or described step with the order being different from herein.
To achieve these goals, according on the other hand of the present utility model, provide a kind of air-conditioning inside and outside machine communicator, this device can comprise: the first receiver module, for receive the control information of the outer machine of air-conditioner by CAN bus; The first modular converter, is converted to RS485 data for data converter by control information; The first transport module, for RS485 bus by RS485 transfer of data to internal machine of air-conditioner and manual operator; The second receiver module, for the feedback information of RS485 bus reception internal machine of air-conditioner and manual operator; The second modular converter, is converted to CAN data for data converter by feedback information; Return to module, for CAN bus, CAN data are back to the outer machine of air-conditioner.
Adopt the utility model, CAN data in CAN bus can be converted to RS485 data by data converter, and the RS485 data in RS485 bus can be converted to CAN data, realize the conversion of RS485 data and CAN data, in air-conditioner, use this communication equipment, not to use RS485 communication completely, or use CAN to carry out communication completely, thereby avoid only using in prior art RS485 communication, traffic rate is slower, and the problem anti-interference and data fault-tolerant ability is weak, and avoid using completely CAN network on-line, send the lower problem of data efficiency, but in conjunction with the advantage of CAN bus and 485 buses, use traffic rate CAN bus high and that antijamming capability is stronger to send control information to each indoor set and manual operator as the controller in the outer machine of air-conditioner of host computer, status information, contain much information, internal machine of air-conditioner as slave computer can be by information such as the timely feedback environment humitures of RS485 bus, adopt and send 485 higher buses of data efficiency, and 485 cost is lower, and by data converter can compatible all supports RS485 networks and CAN network inside and outside machine, need not match specially, thereby solve the inside and outside low problem of machine communication efficiency of air-conditioning of the prior art, realize the communication of quick and precisely carrying out efficiently the inside and outside machine of air-conditioner, and can realize the inside and outside machine of air-conditioner good compatible network under different systems, in making under heterogeneous networks, the outer machine coupling of machine versatility strengthens, inside and outside making under different system, machine configuration type selecting is more flexible.
From above description, can find out, the utility model has been realized following technique effect: adopt the utility model, CAN data in CAN bus can be converted to RS485 data by data converter, and the RS485 data in RS485 bus can be converted to CAN data, realize the conversion of RS485 data and CAN data, in air-conditioner, use this communication equipment, not to use RS485 communication completely, or use CAN to carry out communication completely, thereby avoid only using in prior art RS485 communication, traffic rate is slower, and the problem anti-interference and data fault-tolerant ability is weak, and avoid using completely CAN network on-line, send the lower problem of data efficiency, but in conjunction with the advantage of CAN bus and 485 buses, use traffic rate CAN bus high and that antijamming capability is stronger to send control information to each indoor set and manual operator as the controller in the outer machine of air-conditioner of host computer, status information, contain much information, internal machine of air-conditioner as slave computer can be by information such as the timely feedback environment humitures of RS485 bus, adopt and send 485 higher buses of data efficiency, and 485 cost is lower, and by data converter can compatible all supports RS485 networks and CAN network inside and outside machine, need not match specially, thereby solve the inside and outside low problem of machine communication efficiency of air-conditioning of the prior art, realize the communication of quick and precisely carrying out efficiently the inside and outside machine of air-conditioner, and can realize the inside and outside machine of air-conditioner good compatible network under different systems, in making under heterogeneous networks, the outer machine coupling of machine versatility strengthens, inside and outside making under different system, machine configuration type selecting is more flexible.
The claimed calculator of the utility model and each assembly that forms this processor are all a kind of entity products that has definite shape, constructs and occupy certain space.For example, microprocessor, image processor, sub-processor etc. are all can computer equipment, terminal or server independent operating, that have particular hardware structure.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. the inside and outside machine communication equipment of air-conditioning, is characterized in that, comprising:
CAN bus;
RS485 bus;
Data converter, the outer machine of air-conditioner is connected with described data converter by described CAN bus, and internal machine of air-conditioner is connected with described data converter by described RS485 bus,
Wherein, described data converter is used for changing RS485 data and CAN data.
2. the inside and outside machine communication equipment of air-conditioning according to claim 1, is characterized in that, described data converter comprises:
CAN communication interface, is connected with described CAN bus, for transmitting described CAN data;
CAN data transmit-receive circuit, is connected with described CAN communication interface, for receiving and dispatching described CAN data;
RS485 interface, is connected with described RS485 bus, for transmitting described RS485 data;
RS485 data transmit-receive circuit, is connected with described RS485 interface, for receiving and dispatching described RS485 data;
Main control chip, is connected between described CAN data transmit-receive circuit and described RS485 data transmit-receive circuit, receives and dispatches described CAN data, and control described RS485 data transmit-receive circuit and receive and dispatch described RS485 data for controlling described CAN data transmit-receive circuit.
3. the inside and outside machine communication equipment of air-conditioning according to claim 2, is characterized in that, described data converter also comprises:
Power module, is connected with described main control chip, described CAN data transmit-receive circuit and described RS485 data transmit-receive circuit respectively, is used to described main control chip, described CAN data transmit-receive circuit and described RS485 data transmit-receive circuit supply.
4. the inside and outside machine communication equipment of air-conditioning according to claim 2, is characterized in that, described data converter also comprises:
Reset circuit, is connected with described main control chip, returns back to original state for sending reset signal to trigger data converter described in described main control chip control.
5. the inside and outside machine communication equipment of air-conditioning according to claim 2, is characterized in that, described RS485 data transmit-receive circuit comprises:
RS485 data transmit-receive chip;
The first Transient Voltage Suppressor and the second Transient Voltage Suppressor, be connected on the signal port of described RS485 data transmit-receive chip.
6. the inside and outside machine communication equipment of air-conditioning according to claim 5, is characterized in that, described RS485 data transmit-receive circuit comprises:
Current-limiting resistance, is connected between described main control chip and described the first Transient Voltage Suppressor.
7. the inside and outside machine communication equipment of air-conditioning according to claim 2, is characterized in that, described CAN data transmit-receive circuit comprises:
CAN data transmit-receive chip;
The first power isolation circuit, is connected between described CAN data transmit-receive chip and described main control chip;
Second source buffer circuit, is connected between described CAN data transmit-receive chip and described CAN communication interface;
The first build-out resistor, is connected between described the first power isolation circuit and described main control chip;
The second build-out resistor, is connected between described second source buffer circuit and described CAN communication interface.
8. the inside and outside machine communication equipment of air-conditioning according to claim 7, is characterized in that, described CAN data transmit-receive circuit comprises:
The 3rd Transient Voltage Suppressor, is connected with described the first power isolation circuit, described second source buffer circuit, described the first build-out resistor and described the second build-out resistor respectively.
9. the inside and outside machine communication equipment of air-conditioning according to claim 7, is characterized in that, described CAN data transmit-receive circuit also comprises:
Polarity switching, is connected with described main control chip, described the first build-out resistor and described the second build-out resistor respectively, and described polarity switching comprises:
Relay;
The first triode, is connected with the first coil of described relay;
The second triode, is connected with the second coil of described relay,
Wherein, by controlling described the first triode and described the second triode in not relay commutation described in conducting control in the same time, to switch the reiving/transmitting state of described CAN data transmit-receive circuit.
10. an air-conditioner, is characterized in that, comprising:
The outer machine of air-conditioner;
One or more internal machine of air-conditioners;
Machine communication equipment inside and outside air-conditioning in claim 1 to 9 described in any one;
Wherein, the outer machine of described air-conditioner is connected with one or more data converters by CAN bus; Each described data converter is connected with described internal machine of air-conditioner by RS485 bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320843824.6U CN203605405U (en) | 2013-12-18 | 2013-12-18 | Air conditioner and communication device of air conditioner internal unit and air conditioner external unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320843824.6U CN203605405U (en) | 2013-12-18 | 2013-12-18 | Air conditioner and communication device of air conditioner internal unit and air conditioner external unit |
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| Publication Number | Publication Date |
|---|---|
| CN203605405U true CN203605405U (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320843824.6U Expired - Lifetime CN203605405U (en) | 2013-12-18 | 2013-12-18 | Air conditioner and communication device of air conditioner internal unit and air conditioner external unit |
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| CN (1) | CN203605405U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109542017A (en) * | 2018-12-13 | 2019-03-29 | 珠海格力电器股份有限公司 | Telecommunication circuit switching method and telecommunication circuit switching circuit |
| CN109974214A (en) * | 2019-02-27 | 2019-07-05 | 珠海格力电器股份有限公司 | Method, apparatus, system and the terminal of equipment regulation |
| CN110762604A (en) * | 2019-10-14 | 2020-02-07 | 珠海格力电器股份有限公司 | Indoor unit, pairing method and device of indoor unit and wired controller, storage medium and air conditioner |
| CN112032981A (en) * | 2020-07-24 | 2020-12-04 | 广东积微科技有限公司 | Air conditioner indoor and outdoor unit communication circuit and air conditioner |
-
2013
- 2013-12-18 CN CN201320843824.6U patent/CN203605405U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109542017A (en) * | 2018-12-13 | 2019-03-29 | 珠海格力电器股份有限公司 | Telecommunication circuit switching method and telecommunication circuit switching circuit |
| CN109542017B (en) * | 2018-12-13 | 2023-11-21 | 珠海格力电器股份有限公司 | Communication circuit switching method and communication circuit switching circuit |
| CN109974214A (en) * | 2019-02-27 | 2019-07-05 | 珠海格力电器股份有限公司 | Method, apparatus, system and the terminal of equipment regulation |
| CN110762604A (en) * | 2019-10-14 | 2020-02-07 | 珠海格力电器股份有限公司 | Indoor unit, pairing method and device of indoor unit and wired controller, storage medium and air conditioner |
| CN112032981A (en) * | 2020-07-24 | 2020-12-04 | 广东积微科技有限公司 | Air conditioner indoor and outdoor unit communication circuit and air conditioner |
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