CN114738942A - Wire controller and control method and device of air conditioning system of wire controller - Google Patents
Wire controller and control method and device of air conditioning system of wire controller Download PDFInfo
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- CN114738942A CN114738942A CN202210325355.2A CN202210325355A CN114738942A CN 114738942 A CN114738942 A CN 114738942A CN 202210325355 A CN202210325355 A CN 202210325355A CN 114738942 A CN114738942 A CN 114738942A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000004891 communication Methods 0.000 claims abstract description 241
- 230000004044 response Effects 0.000 claims description 21
- 239000003990 capacitor Substances 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 7
- 238000004590 computer program Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
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- 238000011161 development Methods 0.000 description 1
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
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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
- F24F11/88—Electrical aspects, e.g. circuits
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Air Conditioning Control Device (AREA)
Abstract
The invention relates to the technical field of air conditioners, in particular to a wire controller and a control method and a control device of an air conditioning system of the wire controller, and aims to solve the technical problem that the control efficiency of an air conditioner is low due to the fact that the conventional wire controller can only send a single protocol through a single interface. For this purpose, the wire controller of the invention comprises a direct current communication module, a master control MCU and a HOMEBUS communication module. Therefore, the wire controller comprising the HOMEBUS communication module and the direct-current communication module is provided with two communication interfaces, different communication protocols can be transmitted through different communication interfaces, the cost is saved, and the control efficiency of the air conditioner is improved.
Description
Technical Field
The invention relates to the technical field of air conditioners, and particularly provides a drive-by-wire controller and a control method and device of an air conditioning system of the drive-by-wire controller.
Background
At present, communication protocols for air conditioners, particularly for multi-split air conditioners, are updated and iterated all the time, and communication protocols between line controllers and indoor units are iterated all the time. The existing wire controller only has one interface, only one communication protocol can be sent through the interface, when the indoor unit communicates through different communication protocols, the single wire controller is difficult to meet the actual requirement, the wire controller needs to be developed again at the moment, the cost is high, and the control efficiency of the air conditioner is difficult to guarantee.
Accordingly, there is a need in the art for a new control scheme for an air conditioning system that addresses the above-mentioned problems.
Disclosure of Invention
In order to overcome the above-mentioned drawbacks, the present invention is proposed to solve or at least partially solve the technical problem that the control efficiency of the air conditioner is low due to the fact that the existing line controller can only send a single protocol through a single interface. The invention provides a line controller and a control method and device of an air conditioning system of the line controller.
In a first aspect, the present invention provides a wire controller, including a dc communication module, a master MCU and a HOMEBUS communication module; the signal output end of the direct current communication module is connected with the first signal input end of the master control MCU, the signal input end of the direct current communication module is connected with the first signal output end of the master control MCU, the signal output end of the HOMEBUS communication module is connected with the second signal input end of the master control MCU, and the signal input end of the HOMEBUS communication module is connected with the second signal output end of the master control MCU.
In one embodiment, the dc communication module includes a first transistor and a second transistor; the collector of the first triode is the signal input end of the direct current communication module, the emitter of the first triode is grounded, the base of the first triode is a first communication end, the first communication end is also connected with the collector of the second triode, the emitter of the second triode is grounded, and the base of the second triode is the signal output end.
In one embodiment, the dc communication module further includes a first resistor, one end of the first resistor R1 is connected to the collector of the first transistor, and the other end of the first resistor R1 is connected to a dc power supply.
In one embodiment, the HOMEBUS communication module includes a first differential signal terminal and a second differential signal terminal; the first differential signal end is connected to a first pin of the HOMEBUS communication chip through a first capacitor and a second resistor, and the second differential signal end is connected to a second pin of the HOMEBUS communication chip through a second capacitor and a third resistor; and the first differential signal end, the second differential signal end and the first communication end of the direct current communication module form a first communication interface of the line controller.
In one embodiment, the HOMEBUS communication module further includes a second communication terminal and a third communication terminal, the second communication terminal is a third pin of the HOMEBUS communication chip, and the third communication terminal is a fourth pin of the HOMEBUS communication chip; and the second communication end and the third communication end form a second communication interface of the line controller.
In a second aspect, the present invention provides a control method for an air conditioning system, where the air conditioning system includes the aforementioned line controller, an indoor unit and an outdoor unit, and the indoor unit is in communication connection with the line controller and the outdoor unit respectively; the control method comprises the following steps: after the air conditioning system is powered on, controlling the wire controller to send a communication protocol to the indoor unit; and judging whether the line controller receives a response signal sent by the indoor unit based on the communication protocol, if so, controlling the indoor unit to communicate with the line controller and the outdoor unit based on the communication protocol, and if not, controlling the line controller to continuously send the communication protocol to the indoor unit.
In one embodiment, controlling the line controller to send a communication protocol to the indoor unit includes: controlling the line controller to send a direct current communication protocol to the indoor unit through a first communication interface, and controlling the line controller to send a HOMEBUS communication protocol to the indoor unit through a second communication interface; judging whether the line controller receives a response signal sent by the indoor unit based on the communication protocol, if so, controlling the indoor unit to communicate with the line controller and the outdoor unit based on the communication protocol, and if not, controlling the line controller to continuously send the communication protocol to the indoor unit comprises the following steps: judging whether the line controller receives a first response signal sent by the indoor unit based on the direct current communication protocol, if so, controlling the indoor unit to communicate with the line controller and the outdoor unit based on the direct current communication protocol, and if not, controlling the line controller to continuously send the direct current communication protocol to the indoor unit; or judging whether the line controller receives a second response signal sent by the indoor unit based on the HOMEBUS communication protocol, if so, controlling the indoor unit to communicate with the line controller and the outdoor unit based on the direct-current communication protocol, and if not, controlling the line controller to continuously send the HOMEBUS communication protocol to the indoor unit.
In a third aspect, the present invention provides a control device for an air conditioning system, where the air conditioning system includes a line controller, an indoor unit and an outdoor unit, and the indoor unit is in communication connection with the line controller and the outdoor unit respectively; the control device includes: the control module is configured to control the wire controller to send a communication protocol to the indoor unit after the air conditioning system is powered on; and the judging module is configured to judge whether the wire controller receives a response signal sent by the indoor unit based on the communication protocol, if so, the indoor unit is controlled to communicate with the wire controller and the outdoor unit based on the communication protocol, and if not, the wire controller is controlled to continuously send the communication protocol to the indoor unit.
In a fourth aspect, there is provided an air conditioner comprising a processor and a storage device adapted to store a plurality of program codes adapted to be loaded and run by the processor to perform the control method of the air conditioning system of any of the preceding claims.
In a fifth aspect, there is provided a computer readable storage medium having stored therein a plurality of program codes adapted to be loaded and executed by a processor to perform the control method of the air conditioning system of any of the foregoing.
One or more technical schemes of the invention at least have one or more of the following beneficial effects:
the invention provides a wire controller, which comprises a HOMEBUS communication module and a direct current communication module, and is provided with two communication interfaces, different communication protocols can be transmitted through different communication interfaces, the cost is saved, and the control efficiency of an air conditioner is improved. In addition, the wire cores of the first communication interface and the second communication interface are different in number, and the connection of the wire controller and the indoor unit can reduce wiring errors, so that the correct communication connection of the wire controller and the indoor unit is ensured, and the control efficiency of the air conditioner is improved.
The application also provides a control method of the air conditioning system, firstly controlling the wire controller to send a communication protocol to the indoor unit, then judging whether the wire controller receives a response signal sent by the indoor unit based on the communication protocol, and controlling the indoor unit to communicate with the wire controller and the outdoor unit based on the corresponding communication protocol under the condition of receiving the response signal, so that the work of repeated development is reduced, the cost is saved, and the control efficiency of the air conditioner is improved. In addition, after the air conditioning system is powered on, two communication protocols are sent to the indoor unit at the same time, so that the collection time is reduced, and the control efficiency of the air conditioner is improved.
Drawings
The disclosure of the present invention will become more readily understood with reference to the accompanying drawings. As is readily understood by those skilled in the art: these drawings are for illustrative purposes only and are not intended to constitute a limitation on the scope of the present invention. Moreover, in the drawings, like numerals are used to indicate like parts, and in which:
FIG. 1 is a block diagram of the main structure of a line controller according to one embodiment of the present invention;
FIG. 2 is a schematic circuit diagram of a master MCU according to an embodiment of the present invention;
fig. 3 is a schematic circuit configuration diagram of a dc communication module according to an embodiment of the present invention;
FIG. 4 is a schematic circuit diagram of a HOMEBUS communication module according to one embodiment of the present invention;
fig. 5 is a flowchart illustrating main steps of a control method of an air conditioning system according to an embodiment of the present invention;
fig. 6 is a schematic view of communication connections of the line controller, the indoor unit, and the outdoor unit according to an embodiment of the present invention;
fig. 7 is a flowchart illustrating main steps of a control apparatus of an air conditioning system according to an embodiment of the present invention.
List of reference numerals：
11: a direct current communication module; 12: a main control MCU; 13: a HOMEBUS communication module.
Detailed Description
Some embodiments of the invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
In the description of the present invention, a "module" or "processor" may include hardware, software, or a combination of both. A module may comprise hardware circuitry, various suitable sensors, communication ports, memory, may comprise software components such as program code, or may be a combination of software and hardware. The processor may be a central processing unit, microprocessor, image processor, digital signal processor, or any other suitable processor. The processor has data and/or signal processing functionality. The processor may be implemented in software, hardware, or a combination thereof. Non-transitory computer readable storage media include any suitable medium that can store program code, such as magnetic disks, hard disks, optical disks, flash memory, read-only memory, random-access memory, and the like. The term "a and/or B" denotes all possible combinations of a and B, such as a alone, B alone or a and B. The term "at least one A or B" or "at least one of A and B" means similar to "A and/or B" and may include only A, only B, or both A and B. The singular forms "a", "an" and "the" may include the plural forms as well.
At present, communication protocols for air conditioners, particularly for multi-split air conditioners, are updated and iterated all the time, and communication protocols between line controllers and indoor units are iterated all the time. The existing wire controller only has one interface, only one communication protocol can be sent through the interface, when the indoor unit communicates through different communication protocols, the single wire controller is difficult to meet the actual requirement, the wire controller needs to be developed again at the moment, the cost is high, and the control efficiency of the air conditioner is difficult to guarantee. Therefore, the application provides a line controller and a control method and a control device of an air conditioning system of the line controller, the line controller comprising the HOMEBUS communication module and the direct current communication module is provided with two communication interfaces, and different communication protocols can be transmitted through different communication interfaces, so that the cost is saved, and the control efficiency of the air conditioner is improved.
Referring to fig. 1, fig. 1 is a block diagram illustrating a main structure of a line controller according to an embodiment of the present invention. As shown in fig. 1, the line controller in the present invention includes a direct current communication module 11, a master control MCU12, and a HOMEBUS communication module 13; the signal output end of the direct current communication module 11 is connected to the first signal input end of the master control MCU12, the signal input end of the direct current communication module 11 is connected to the first signal output end of the master control MCU12, the signal output end of the HOMEBUS communication module 13 is connected to the second signal input end of the master control MCU12, and the signal input end of the HOMEBUS communication module 13 is connected to the second signal output end of the master control MCU 12. Specifically, as shown in the schematic circuit structure diagram of fig. 2, pin 5 and pin 7 of the main control MCU are a first signal output terminal and a second signal output terminal, respectively, and pin 6 and pin 8 of the main control MCU are a first signal input terminal and a second signal input terminal, respectively.
The wire controller comprising the HOMEBUS communication module and the direct current communication module has two communication interfaces, and different communication protocols, such as a direct current communication protocol and a HOMEBUS communication protocol, can be transmitted through different communication interfaces, so that the cost is saved, and the control efficiency of the air conditioner is improved.
In one embodiment, as particularly shown in fig. 3, the dc communication module includes a first transistor Q1 and a second transistor Q2; the collector of the first triode Q1 is the signal input end of the direct current communication module, the emitter of the first triode Q1 is grounded, the base of the first triode Q1 is the first communication end, the collector of the second triode Q2 is connected to the first communication end, the emitter of the second triode Q2 is grounded, and the base of the second triode Q2 is the signal output end. In addition, the dc communication module further includes a first resistor R1, one end of the first resistor R1 is connected to the collector of the first transistor Q1, and the other end of the resistor R1 is connected to a dc power source, where the dc power source may be a constant voltage dc power source. The communication end of the dc communication module and the two differential signal ends in the HOMEBUS communication module in the present application together form a first communication interface of the line controller, where the two differential signal ends in the HOMEBUS communication module are specifically hbs (a) and hbs (b) shown in fig. 2. This first communication interface can connect the 12V voltage (12V-IN), the Ground (GND) and the Communication Output (COM) of the interface module (for example CN2 IN fig. 2) to enable communication with the indoor unit. That is, the first communication interface in this application is a three-core interface for transmitting a dc communication protocol, wherein the dc communication protocol is a communication protocol implemented by a specific circuit structure as shown in fig. 3.
In one embodiment, the HOMEBUS communication module in this embodiment includes a HOMEBUS communication chip, which may be model No. MM 1192. As shown in fig. 4 in particular, the HOMEBUS communication module includes a first differential signal terminal hbs (a) and a second differential signal terminal hbs (b); a first differential signal terminal hbs (a) is connected via a first capacitor C1 and a second resistor R2 to a first pin of the HOMEBUS communication chip, here pin 16 of the HOMEBUS communication chip, and a second differential signal terminal hbs (b) is connected via a second capacitor C2 and a third resistor R3 to a second pin of the HOMEBUS communication chip, here pin 15 of the HOMEBUS communication chip; and the first differential signal end hbs (a), the second differential signal end hbs (b) and the first communication end of the dc communication module form a first communication interface of the line controller.
In one embodiment, the HOMEBUS communication module further includes a second communication terminal TA and a third communication terminal TB, where the second communication terminal TA is a third pin of the HOMEBUS communication chip, where the third pin is a pin 10 of the HOMEBUS communication chip, the third communication terminal TB is a fourth pin of the HOMEBUS communication chip, where the fourth pin is a pin 9 of the HOMEBUS communication chip; and the second communication end and the third communication end form a second communication interface of the wire controller. That is, the second communication interface in this application is a two-wire interface for transmitting the HOMEBUS communication protocol. This application is through the communication interface of the different heart yearns of design, to being connected of line accuse ware and indoor set, can cross the reduction wiring mistake to guarantee the correct communication connection of line accuse ware with the indoor set, be favorable to improving the control efficiency of air conditioner.
In addition, as shown in fig. 4, the HOMEBUS communication module in the present application further includes a transistor Q3, a transistor Q4, a transistor Q5, and a transistor Q6, and these transistors are mutually matched to realize the communication function of the HOMEBUS communication module.
Referring to fig. 5, fig. 5 is a flowchart illustrating main steps of a control method of an air conditioning system according to an embodiment of the present invention. As shown in fig. 5, the control method of the air conditioning system in the embodiment of the present invention mainly includes the following steps S101 to S102.
Step S101: and after the air conditioning system is powered on, the control wire controller sends a communication protocol to the indoor unit. Specifically, the communication protocol includes a direct current communication protocol and a HOMEBUS communication protocol. Because the wire controller in the application has two communication interfaces, but only one communication interface is in communication connection with the indoor unit, when the protocols are sent, the two communication protocols are both sent, and specifically, which communication protocol is specifically received by the indoor unit is determined by using a response signal fed back by the indoor unit. Specifically, the control line controller may send a direct current communication protocol to the indoor unit through the first communication interface, and send a HOMEBUS communication protocol to the indoor unit through the second communication interface.
Step S102: and judging whether the line controller receives a response signal sent by the indoor unit based on the communication protocol, if so, controlling the indoor unit to communicate with the line controller and the outdoor unit based on the communication protocol, and if not, controlling the line controller to continuously send the communication protocol to the indoor unit. In one embodiment, the method for controlling the line controller to continuously send the communication protocol to the indoor unit includes the steps of: judging whether the line controller receives a first response signal sent by the indoor unit based on a direct current communication protocol, if so, controlling the indoor unit to communicate with the line controller and the outdoor unit based on the direct current communication protocol, and if not, controlling the line controller to continuously send the direct current communication protocol to the indoor unit; or judging whether the line controller receives a second response signal sent by the indoor unit based on the HOMEBUS communication protocol, if so, controlling the indoor unit to communicate with the line controller and the outdoor unit based on the direct-current communication protocol, and if not, controlling the line controller to continuously send the HOMEBUS communication protocol to the indoor unit.
Specifically, after controlling the line controller to simultaneously transmit the direct current communication protocol and the HOMEBUS communication protocol, the indoor unit can feed back a response signal based on either of the two protocols. And when the wire controller receives a response signal fed back by the indoor unit based on a certain communication protocol, the wire controller controls the indoor unit to communicate with the wire controller and the outdoor unit based on the corresponding communication protocol.
Based on the steps S101 to S102, the line controller is controlled to send a communication protocol to the indoor unit, and then whether the line controller receives a response signal sent by the indoor unit based on the communication protocol is determined, and the indoor unit is controlled to communicate with the line controller and the outdoor unit based on the corresponding communication protocol under the condition that the response signal is received. In addition, after the air conditioning system is powered on, two communication protocols are sent to the indoor unit at the same time, so that the collecting time is reduced, and the control efficiency of the air conditioner is improved.
Specifically, as shown in fig. 6, the line controller has two communication interfaces, and different communication interfaces can be connected to the indoor unit, specifically, to the indoor unit board of the indoor unit, so that different communication protocols can be transmitted through different communication interfaces.
It should be noted that, although the foregoing embodiments describe each step in a specific sequence, those skilled in the art will understand that, in order to achieve the effect of the present invention, different steps do not necessarily need to be executed in such a sequence, and they may be executed simultaneously (in parallel) or in other sequences, and these changes are all within the protection scope of the present invention.
Furthermore, the invention also provides a control device of the air conditioning system.
Referring to fig. 7, fig. 7 is a main block diagram of a control apparatus of an air conditioning system according to an embodiment of the present invention. As shown in fig. 7, the control device of the air conditioning system in the embodiment of the present invention mainly includes a control module 100 and a determination module 200. In some embodiments, one or more of the control module 100 and the determination module 200 may be combined together into one module. In some embodiments, the control module 100 may be configured to control the wire controller to send the communication protocol to the indoor unit after the air conditioning system is powered on. The judging module can be configured to judge whether the line controller receives a response signal sent by the indoor unit based on the communication protocol, if so, the indoor unit is controlled to communicate with the line controller and the outdoor unit based on the communication protocol, and if not, the line controller is controlled to continuously send the communication protocol to the indoor unit. In one embodiment, the description of the specific implementation function may refer to steps S101 to S102.
The technical principles, the solved technical problems and the generated technical effects of the control device of the air conditioning system described above for implementing the embodiment of the control method of the air conditioning system shown in fig. 5 are similar, and it can be clearly understood by those skilled in the art that for convenience and brevity of description, the specific working process and related descriptions of the control device of the air conditioning system may refer to the contents described in the embodiment of the control method of the air conditioning system, and are not repeated here.
It will be understood by those skilled in the art that all or part of the flow of the method according to the above-described embodiment may be implemented by a computer program, which may be stored in a computer-readable storage medium and used to implement the steps of the above-described embodiments of the method when the computer program is executed by a processor. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable storage medium may include: any entity or device capable of carrying said computer program code, media, usb disk, removable hard disk, magnetic diskette, optical disk, computer memory, read-only memory, random access memory, electrical carrier wave signals, telecommunication signals, software distribution media, etc. It should be noted that the computer readable storage medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable storage media that does not include electrical carrier signals and telecommunications signals in accordance with legislation and patent practice.
Furthermore, the invention also provides electronic equipment. In an embodiment of the electronic device according to the present invention, the electronic device comprises a processor and a storage device, the storage device may be configured to store a program for executing the control method of the air conditioning system of the above-mentioned method embodiment, and the processor may be configured to execute the program in the storage device, the program including but not limited to the program for executing the control method of the air conditioning system of the above-mentioned method embodiment. For convenience of explanation, only the parts related to the embodiments of the present invention are shown, and details of the specific techniques are not disclosed.
Further, the invention also provides a computer readable storage medium. In one computer-readable storage medium embodiment according to the present invention, a computer-readable storage medium may be configured to store a program for executing the control method of the air conditioning system of the above-described method embodiment, which may be loaded and executed by a processor to implement the control method of the air conditioning system described above. For convenience of explanation, only the parts related to the embodiments of the present invention are shown, and details of the specific techniques are not disclosed. The computer readable storage medium may be a storage device formed by including various electronic devices, and optionally, the computer readable storage medium is a non-transitory computer readable storage medium in the embodiment of the present invention.
Further, it should be understood that, since the modules are only configured to illustrate the functional units of the apparatus of the present invention, the corresponding physical devices of the modules may be the processor itself, or a part of software, a part of hardware, or a part of a combination of software and hardware in the processor. Thus, the number of individual modules in the figures is merely illustrative.
Those skilled in the art will appreciate that the various modules in the apparatus may be adaptively split or combined. Such splitting or combining of specific modules does not cause the technical solutions to deviate from the principle of the present invention, and therefore, the technical solutions after splitting or combining will fall within the protection scope of the present invention.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. A line controller is characterized by comprising a direct current communication module, a master control MCU and a HOMEBUS communication module; the signal output end of the direct current communication module is connected with the first signal input end of the main control MCU, the signal input end of the direct current communication module is connected with the first signal output end of the main control MCU, the signal output end of the HOMEBUS communication module is connected with the second signal input end of the main control MCU, and the signal input end of the HOMEBUS communication module is connected with the second signal output end of the main control MCU.
2. The wire controller of claim 1, wherein the dc communication module comprises a first transistor and a second transistor; the collector of the first triode is the signal input end of the direct current communication module, the emitter of the first triode is grounded, the base of the first triode is a first communication end, the first communication end is connected with the collector of the second triode, the emitter of the second triode is grounded, and the base of the second triode is the signal output end.
3. The wire controller according to claim 2, wherein the dc communication module further comprises a first resistor, one end of the first resistor is connected to the collector of the first transistor, and the other end of the first resistor is connected to a dc power supply.
4. The line controller of claim 2, wherein the HOMEBUS communication module comprises a first differential signal terminal and a second differential signal terminal; the first differential signal end is connected to a first pin of the HOMEBUS communication chip through a first capacitor and a second resistor, and the second differential signal end is connected to a second pin of the HOMEBUS communication chip through a second capacitor and a third resistor; and the first differential signal end, the second differential signal end and the first communication end of the direct current communication module form a first communication interface of the wire controller.
5. The wire controller of claim 4, wherein the HOMEBUS communication module further comprises a second communication terminal and a third communication terminal, the second communication terminal is a third pin of the HOMEBUS communication chip, and the third communication terminal is a fourth pin of the HOMEBUS communication chip; and the second communication end and the third communication end form a second communication interface of the line controller.
6. A control method of an air conditioning system, characterized in that the air conditioning system comprises the line controller of any one of claims 1 to 5, an indoor unit and an outdoor unit, wherein the indoor unit is respectively connected with the line controller and the outdoor unit in a communication way; the control method comprises the following steps:
after the air conditioning system is powered on, controlling the wire controller to send a communication protocol to the indoor unit;
and judging whether the line controller receives a response signal sent by the indoor unit based on the communication protocol, if so, controlling the indoor unit to communicate with the line controller and the outdoor unit based on the communication protocol, and if not, controlling the line controller to continuously send the communication protocol to the indoor unit.
7. The control method of an air conditioning system according to claim 6, wherein the communication protocol includes a direct current communication protocol and a HOMEBUS communication protocol;
controlling the line controller to send a communication protocol to the indoor unit includes: controlling the line controller to send a direct current communication protocol to the indoor unit through a first communication interface, and sending a HOMEBUS communication protocol to the indoor unit through a second communication interface;
judging whether the line controller receives a response signal sent by the indoor unit based on the communication protocol, if so, controlling the indoor unit to communicate with the line controller and the outdoor unit based on the communication protocol, and if not, controlling the line controller to continuously send the communication protocol to the indoor unit comprises the following steps:
judging whether the line controller receives a first response signal sent by the indoor unit based on the direct current communication protocol, if so, controlling the indoor unit to communicate with the line controller and the outdoor unit based on the direct current communication protocol, and if not, controlling the line controller to continuously send the direct current communication protocol to the indoor unit; or
And judging whether the line controller receives a second response signal sent by the indoor unit based on the HOMEBUS communication protocol, if so, controlling the indoor unit to communicate with the line controller and the outdoor unit based on the direct-current communication protocol, and if not, controlling the line controller to continuously send the HOMEBUS communication protocol to the indoor unit.
8. The control device of the air conditioning system is characterized by comprising a wire controller, an indoor unit and an outdoor unit, wherein the indoor unit is respectively in communication connection with the wire controller and the outdoor unit; the control device includes:
the control module is configured to control the wire controller to send a communication protocol to an indoor unit after the air conditioning system is powered on;
and the judging module is configured to judge whether the wire controller receives a response signal sent by the indoor unit based on the communication protocol, if so, the indoor unit is controlled to communicate with the wire controller and the outdoor unit based on the communication protocol, and if not, the wire controller is controlled to continuously send the communication protocol to the indoor unit.
9. An air conditioner comprising a processor and a storage device, said air conditioner being adapted to store a plurality of program codes, characterized in that said program codes are adapted to be loaded and run by said processor to perform the control method of an air conditioning system according to any one of claims 6 to 7.
10. A computer readable storage medium having a plurality of program codes stored therein, wherein the program codes are adapted to be loaded and executed by a processor to perform the control method of an air conditioning system according to any one of claims 6 to 7.
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