CN116447646A - Multi-split air conditioning system and control method thereof - Google Patents

Abstract

The embodiment of the application provides a multi-split air conditioning system and a control method thereof, relates to the technical field of air conditioners, and is used for reducing the probability of control disorder of the multi-split air conditioning system. The multi-split air conditioning system comprises: a plurality of air conditioning subsystems, one air conditioning subsystem comprising at least one outdoor unit, a plurality of indoor units and a communication module; a first communication bus; a plurality of second communication buses; a controller configured to: for each air conditioning subsystem in the plurality of air conditioning subsystems, after the multi-split air conditioning system is powered on for the first time, acquiring an on-line scheme of the air conditioning subsystem through a first communication bus; and sending the online scheme of the air conditioning subsystem to the communication module of the air conditioning subsystem through the second communication bus, and controlling the communication module of the air conditioning subsystem to establish a binding relationship between the communication module of the air conditioning subsystem and the air conditioning subsystem according to the online scheme of the air conditioning subsystem.

Description

Multi-split air conditioning system and control method thereof

Technical Field

The application relates to the technical field of air conditioners, in particular to a multi-split air conditioning system and a control method.

Background

Air conditioners are increasingly being used in a variety of places such as entertainment, home, work, etc. When air conditioners are needed to be used in a plurality of small areas in the same area, a multi-split air conditioning system is often adopted to realize the regulation and control of the room temperature of the multiple areas in consideration of electric energy saving.

The multi-split air conditioning system is often configured with a communication module for realizing communication connection with a cloud server. With the development of society, in order to facilitate centralized control, a plurality of multi-split air conditioning systems can be combined into a larger multi-split air conditioning system as an air conditioning subsystem. However, after the multiple air conditioning subsystems are simultaneously connected, connection is established among the communication modules of the multiple air conditioning subsystems, and because the functions of the communication modules are similar, the situation of control disorder is extremely easy to occur, so that the use experience of a user is affected. Therefore, how to avoid the situation that the multi-split air conditioning system is in disorder control, and reduce the probability of disorder control are a urgent problem to be solved.

Disclosure of Invention

The embodiment of the application provides a multi-split air conditioning system and a control method thereof, which are used for reducing the probability of occurrence of control disorder of the multi-split air conditioning system.

In a first aspect, an embodiment of the present application provides a multi-split air conditioning system, including:

the air conditioning subsystem comprises at least one outdoor unit, a plurality of indoor units and a communication module, wherein the communication module is used for realizing communication connection between the air conditioning subsystem where the communication module is positioned and the cloud server;

The first communication bus is used for realizing communication connection among a plurality of air conditioning subsystems and realizing communication connection among an outdoor unit, an indoor unit and a communication module in any one air conditioning subsystem;

many online air conditioning system still includes:

the system comprises a plurality of second communication buses, wherein one end of one second communication bus is connected with an outdoor unit in one air conditioning subsystem, and the other end of the second communication bus is connected with a communication module in the same air conditioning subsystem and is used for realizing communication connection between the outdoor unit and the communication module in one air conditioning subsystem;

a controller configured to:

for each air conditioning subsystem in the plurality of air conditioning subsystems, after the multi-split air conditioning system is powered on for the first time, acquiring an on-line scheme of the air conditioning subsystem through a first communication bus; the online scheme comprises a connection relation among all devices in the air conditioning subsystem;

and sending the online scheme of the air conditioning subsystem to the communication module of the air conditioning subsystem through the second communication bus, and controlling the communication module of the air conditioning subsystem to establish a binding relationship between the communication module of the air conditioning subsystem and the air conditioning subsystem according to the online scheme of the air conditioning subsystem.

The technical scheme of the embodiment of the application at least brings the following beneficial effects: aiming at the problem that the control disorder can occur in the prior multi-split air conditioning system, the multi-split air conditioning system provided by the embodiment of the application realizes one-to-one corresponding connection of the outdoor units and the communication modules in the same air conditioning subsystem by adding the second communication bus in each air conditioning subsystem and connecting the outdoor units and the communication modules in the same air conditioning subsystem. After the controller obtains the online scheme of the air conditioning subsystem through the first communication bus, the online scheme of the air conditioning subsystem is sent to the communication module of the air conditioning subsystem through the second communication bus, so that the communication module establishes a binding relation with the air conditioning subsystem according to the online scheme of the air conditioning subsystem.

It can be understood that in the process of sending the online scheme of the air conditioning subsystem to the communication module of the air conditioning subsystem through the second communication bus, because the second communication bus realizes one-to-one correspondence between the outdoor units in the same air conditioning subsystem and the communication modules, the online scheme of the air conditioning subsystem cannot be sent to the communication modules of other air conditioning subsystems, so that the communication modules can be prevented from establishing an incorrect binding relationship with other air conditioning subsystems, the communication modules can forward control instructions to the correct air conditioning subsystems according to the correct binding relationship, the occurrence of control disorder of the multi-split air conditioning system is avoided, and the probability of the occurrence of the control disorder of the multi-split air conditioning system is further reduced.

In some embodiments, after the controller is configured to control the communication module of the air conditioning subsystem to establish a binding relationship between the communication module of the air conditioning subsystem and the air conditioning subsystem according to an online scheme of the air conditioning subsystem, the controller is further configured to: and the communication module controlling the air-conditioning subsystem uploads the binding relationship to the cloud server.

In some embodiments, the controller is further configured to: monitoring a first communication bus; after monitoring that the point detection information appears in the first communication bus, determining an information sending device according to the point detection information; the information transmission device of the same type as the information transmission device is controlled to stop transmitting the spot check information.

In some embodiments, the multi-split air conditioning system further comprises: the centralized control screen is connected with the first communication bus and is used for realizing interaction with a user; the controller is further configured to: under the condition that the centralized control screen is detected to be connected to the multi-split air conditioning system, controlling a communication module in each air conditioning subsystem to enter a silent state; when one communication module is in a silent state, the control instruction issued by the cloud server is stopped from being forwarded to an outdoor unit and an indoor unit in an air conditioning subsystem where the communication module is positioned.

In some embodiments, the second communication bus is an RS485 communication bus, the controller being further configured to: for each air conditioning subsystem in the plurality of air conditioning subsystems, transmitting the equipment information of the air conditioning subsystem to a communication module of the air conditioning subsystem through a second communication bus, and controlling the communication module of the air conditioning subsystem to upload the equipment information of the air conditioning subsystem to the cloud server; the device information of the air conditioning subsystem includes one or more of operation data, alarm codes, manufacturing codes, signal codes, current time, and geographical location information of the air conditioning subsystem.

In a second aspect, an embodiment of the present application provides a control method of a multi-split air conditioning system, where the method includes: for each air conditioning subsystem in a plurality of air conditioning subsystems, after the multi-split air conditioning system is powered on for the first time, acquiring an on-line scheme of the air conditioning subsystem; the online scheme comprises a connection relation among all devices in the air conditioning subsystem; and sending the online scheme of the air conditioning subsystem to the communication module of the air conditioning subsystem through the second communication bus, and controlling the communication module of the air conditioning subsystem to establish a binding relationship between the communication module of the air conditioning subsystem and the air conditioning subsystem according to the online scheme of the air conditioning subsystem.

In some embodiments, the method further comprises: monitoring a first communication bus; after monitoring that the point detection information appears in the first communication bus, determining an information sending device according to the point detection information; the information transmission device of the same type as the information transmission device is controlled to stop transmitting the spot check information.

In some embodiments, the method further comprises: monitoring a first communication bus; after receiving the confirmation information sent by the communication module of any one of the air conditioning subsystems, controlling the communication modules of other air conditioning subsystems to stop sending the confirmation information; the confirmation information is used for indicating the communication module of the air conditioner subsystem to receive the reply information, wherein the reply information is the reply information of the information receiving equipment to the spot check information.

In some embodiments, the method further comprises: under the condition that the centralized control screen is detected to be connected to the multi-split air conditioning system, controlling a communication module in each air conditioning subsystem to enter a silent state; when one communication module is in a silent state, the control instruction issued by the cloud server is stopped from being forwarded to an outdoor unit and an indoor unit in an air conditioning subsystem where the communication module is positioned.

In a third aspect, embodiments of the present application provide a controller, including: one or more processors; one or more memories; the one or more memories are used for storing computer program codes, the computer program codes comprise computer instructions, and when the one or more processors execute the computer instructions, the controller executes the control method of any multi-split air conditioning system provided in the second aspect.

In a fourth aspect, an embodiment of the present application provides a computer readable storage medium, where the computer readable storage medium includes computer instructions, when the computer instructions run on a computer, cause the computer to execute the control method of any of the multi-split air conditioning systems provided in the second aspect.

In a fifth aspect, an embodiment of the present application provides a computer program product, which may be directly loaded into a memory and contains software codes, and the computer program product is loaded and executed by a computer, and can implement the control method of any multi-split air conditioning system as provided in the second aspect.

It should be noted that the above-mentioned computer instructions may be stored in whole or in part on a computer-readable storage medium. The computer readable storage medium may be packaged together with the processor of the controller or may be packaged separately from the processor of the controller, which is not limited in this application.

The beneficial effects described in the second to fifth aspects of the present application may refer to the beneficial effect analysis of the first aspect, and are not described here in detail.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate and do not limit the invention.

Fig. 1 is a schematic topological structure diagram of an existing multi-split air conditioning system according to an embodiment of the present application;

fig. 2 is a schematic topological structure diagram of a multi-split air conditioning system according to an embodiment of the present application;

fig. 3 is a schematic topological structure diagram of an air conditioning subsystem according to an embodiment of the present application;

fig. 4 is an interaction schematic diagram of a communication module and a cloud server of a multi-split air conditioning system provided in an embodiment of the present application;

fig. 5 is a schematic flow chart of a control method of a multi-split air conditioning system according to an embodiment of the present application;

fig. 6 is a schematic flow chart of another control method of a multi-split air conditioning system according to an embodiment of the present application;

fig. 7 is a schematic flow chart of another control method of a multi-split air conditioning system according to an embodiment of the present application;

fig. 8 is a flow chart of another control method of the multi-split air conditioning system according to the embodiment of the present application;

fig. 9 is an overall flow chart of a control method of a multi-split air conditioning system according to an embodiment of the present application;

fig. 10 is a schematic hardware structure of a controller according to an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context. In addition, when describing a pipeline, the terms "connected" and "connected" as used herein have the meaning of conducting. The specific meaning is to be understood in conjunction with the context.

In the embodiments of the present application, words such as "exemplary" or "such as" are used to mean serving as examples, illustrations, or descriptions. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

For ease of understanding, the basic concepts of some terms or techniques involved in the embodiments of the present application are first briefly described and illustrated.

Refrigerant: a substance which is easily absorbed in heat to become gas and easily released in heat to become liquid. In the multi-split air conditioning system, heat energy is transferred through evaporation and condensation of a refrigerant, and a freezing effect is generated.

Expansion valve: the valve consists of a valve body and a coil, and is used for throttling, reducing pressure and regulating flow. The expansion valve in the multi-split air conditioning system can enable the medium-temperature high-pressure liquid refrigerant to be throttled into low-temperature low-pressure wet steam through the expansion valve, then the refrigerant absorbs heat in the evaporator to achieve a refrigerating effect, and the valve flow is controlled through the superheat degree change of the outlet of the evaporator.

Fig. 1 is a schematic diagram of a topology structure of a conventional multi-split air conditioning system. As shown in fig. 1, the multi-split air conditioning system includes an air conditioning subsystem 101, an air conditioning subsystem 102, an air conditioning subsystem 103, and a first communication bus 104.

The multi-split air conditioning system comprises a plurality of air conditioning subsystems, each air conditioning subsystem comprises a communication module, and the communication modules can establish a binding relation with the air conditioning subsystem where the communication module is located, so that communication connection between each air conditioning subsystem and the cloud server is realized.

However, in the process that the communication module in the air conditioning subsystem and the air conditioning subsystem where the communication module is located establish a binding relationship, the communication module broadcasts and searches for the air conditioning subsystem where the communication module is located through the first communication bus 104, and if a communication abnormality occurs at this time, the communication module may establish an erroneous binding relationship with other air conditioning subsystems, so that the communication module forwards a control instruction to the erroneous air conditioning subsystem according to the erroneous binding relationship, and a control disorder occurs in the multi-split air conditioning system.

Aiming at the problem that the control disorder can occur in the prior multi-split air conditioning system, the multi-split air conditioning system provided by the embodiment of the application realizes one-to-one corresponding connection of the outdoor units and the communication modules in the same air conditioning subsystem by adding the second communication bus in each air conditioning subsystem and connecting the outdoor units and the communication modules in the same air conditioning subsystem. After the controller obtains the online scheme of the air conditioning subsystem through the first communication bus, the online scheme of the air conditioning subsystem is sent to the communication module of the air conditioning subsystem through the second communication bus, so that the communication module establishes a binding relation with the air conditioning subsystem according to the online scheme of the air conditioning subsystem.

It can be understood that in the process of sending the online scheme of the air conditioning subsystem to the communication module of the air conditioning subsystem through the second communication bus, because the second communication bus realizes one-to-one correspondence between the outdoor units in the same air conditioning subsystem and the communication modules, the online scheme of the air conditioning subsystem cannot be sent to the communication modules of other subsystems, so that the communication modules can be prevented from establishing an incorrect binding relationship with other air conditioning subsystems, the communication modules can forward control instructions to the correct air conditioning subsystems according to the correct binding relationship, the occurrence of control disorder of the multi-split air conditioning system is avoided, and the probability of occurrence of the control disorder of the multi-split air conditioning system is further reduced.

The following describes a multi-split air conditioning system provided for an embodiment of the present application with reference to the accompanying drawings.

Fig. 2 is a schematic diagram of a topology mechanism of a multi-split air conditioning system according to an exemplary embodiment of the present application, as shown in fig. 2, the multi-split air conditioning system 10 includes a plurality of air conditioning subsystems (such as an air conditioning subsystem 11, an air conditioning subsystem 12, and an air conditioning subsystem 13), a centralized control screen 14, a first communication bus 15, and a controller 50 (not shown in the figure).

In some embodiments, the centralized control screen 14 is connected to the first communication bus 15, and is configured to interact with a user, and send a control instruction to the multi-split air conditioning system in response to a user operation.

In some embodiments, the centralized control screen 14 may be a billing centralized control screen capable of acquiring the operation data of the air conditioning subsystem 11, the air conditioning subsystem 12, and the air conditioning subsystem 13 via the first communication bus 15, and calculating the cost based on the operation data of the air conditioning subsystem.

In some embodiments, the first communication bus 15 may be a homebus communication bus for enabling communication connections between air conditioning subsystems and the centralized control panel 14. For example, as shown in fig. 2, the air conditioning subsystem 11, the air conditioning subsystem 12, the air conditioning subsystem 13, and the centralized control screen 14 are connected to each other through a first communication bus 15.

In some embodiments, the controller 50 may be provided on an outdoor unit of any one of the air conditioning subsystems of the multi-split air conditioning system 10. That is, the controller of the air conditioning subsystem has a function of controlling a plurality of air conditioning subsystems included in the multi-split air conditioning system.

In the illustrated embodiment of the present application, the controller 50 is a device that can generate operation control signals, instructing the air conditioning subsystem to execute control instructions, based on instruction opcodes and timing signals. The controller 50 may be a central processing unit (central processing unit, CPU), a general purpose processor network processor (network processor, NP), a digital signal processor (digital signal processing, DSP), a microprocessor, a microcontroller, a programmable logic device (programmable logic device, PLD), or any combination thereof. The controller 50 may also be any other device having a processing function, such as a circuit, a device, or a software module, which is not limited in any way by the embodiments of the present application.

In addition, the controller 50 may be used to control the operation of the components within the air conditioning subsystem 11 such that the components of the air conditioning subsystem 11 operate to perform the predetermined functions of the air conditioning subsystem.

An air conditioning subsystem 11 is taken as an example with reference to the accompanying drawings, and an air conditioning subsystem of a multi-split air conditioning system provided in an embodiment of the present application is described below.

Fig. 3 is a schematic topology diagram of an air conditioning subsystem according to an exemplary embodiment of the present application.

As shown in fig. 3, the air conditioning subsystem 11 in the multi-split air conditioning system includes an outdoor unit 111, a plurality of indoor units 112, a communication module 113, and a second communication bus 114.

In some embodiments, the outdoor unit 111 is connected to a plurality of indoor units 112 and communication modules 113 included in the air conditioning subsystem 11 where the outdoor unit 111 is located through a first communication bus 15, and the outdoor unit 111 is electrically connected to the communication modules 113 in the same air conditioning subsystem 11 through a second communication bus 114.

The communication module 113 is connected to the outdoor unit 111 and the plurality of indoor units 112 included in the air conditioning subsystem 11 where the communication module 113 is located through the first communication bus 15, and is connected to the outdoor unit 111 in the same air conditioning subsystem 11 through the second communication bus 114, so as to realize communication connection between the air conditioning subsystem 11 where the communication module 113 is located and the cloud server 500.

In some embodiments, one end of the second communication bus 114 is connected to the outdoor unit 111 in the air conditioning subsystem 11, and the other end is connected to the communication module 113 in the same air conditioning subsystem 11, so as to implement communication connection between the outdoor unit 111 and the communication module 113 in the air conditioning subsystem 11.

In some embodiments, the outdoor unit 111 includes: the device comprises a compressor, an outdoor heat exchanger, a liquid storage device, a four-way valve and an expansion valve.

In some embodiments, the compressor is configured to compress a low temperature, low pressure refrigerant gas into a high temperature, high pressure refrigerant gas and to discharge the refrigerant gas to the condenser. The compressor may be an inverter compressor of variable capacity that performs rotational speed control based on an inverter.

In some embodiments, one end of the outdoor heat exchanger is connected to the reservoir via a four-way valve, and the other end is connected to the expansion valve. The outdoor heat exchanger has a first inlet and a second inlet for allowing the refrigerant to flow between the outdoor heat exchanger and the expansion valve, and the first inlet and the second inlet are respectively connected to the outdoor heat exchanger and the expansion valve. The outdoor heat exchanger exchanges heat between outdoor air of a refrigerant flowing through a heat transfer pipe connected between the first inlet and the second outlet, and the outdoor heat exchanger operates as a condenser in a refrigeration cycle.

In some embodiments, one end of the reservoir is connected to the compressor and the other end is connected to the outdoor heat exchanger through a four-way valve. In the accumulator, the refrigerant flowing from the outdoor heat exchanger to the compressor 111 via the four-way valve is separated into a gas refrigerant and a liquid refrigerant. The gas refrigerant is mainly supplied from the accumulator to the suction port of the compressor 111.

In some embodiments, four ports of the four-way valve are connected to a compressor, an outdoor heat exchanger, a liquid reservoir, and an expansion valve, respectively. The four-way valve is used for realizing the mutual conversion between refrigeration and heating by changing the flow direction of the refrigerant in the system pipeline.

In some embodiments, the expansion valve is composed of a valve body and a coil, and has a function of expanding the refrigerant flowing through the expansion valve to reduce the pressure, and can be used for adjusting the flow rate of the refrigerant transmitted from the outdoor unit 111 to the indoor unit 112. When the expansion valve is opened, the flow resistance of the refrigerant passing through the expansion valve increases. When the expansion valve increases the opening degree, the flow path resistance of the refrigerant passing through the expansion valve decreases. In this way, even if the state of other devices in the circuit is unchanged, when the opening degree of the expansion valve is changed, the flow rate of the refrigerant flowing to the indoor unit 112 is changed.

In some embodiments, each indoor unit 112 of the plurality of indoor units 112 includes an indoor heat exchanger.

In some embodiments, the indoor heat exchanger has a third inlet and outlet for flowing a liquid refrigerant between the indoor heat exchanger and the expansion valve, and has a fourth inlet and outlet for flowing a gas refrigerant between the indoor heat exchanger and the discharge outlet of the compressor. The indoor heat exchanger exchanges heat between the indoor air and the refrigerant flowing in the heat transfer pipe connected between the third inlet and the fourth inlet.

In some embodiments, the air conditioning subsystem 11 further includes a plurality of line controllers, one of which is connected to one of the indoor units 112 for implementing interaction with a user, and transmits a control command to the indoor unit 112 connected to the line controller in response to a user operation.

Optionally, for any one of the plurality of line controllers, the line controller includes a display screen, and the line controller may obtain the set temperature of the indoor unit 112 and the ambient temperature where the line controller is connected, and display the set temperature of the indoor unit 112 and the ambient temperature where the indoor unit 112 is located through the display screen.

In some embodiments, the communication module 113 is a component for communicating with external devices or servers according to various communication protocol types. For example: the communication module 113 may include at least one of a wireless communication technology (WIFI) module, a bluetooth module, a wired ethernet module, and other network communication protocol chips or near field communication protocol chips such as a near field communication (near field communication, NFC) module, and an infrared receiver. The communication module 113 may be used for communication with other devices (user mobile terminals) or communication networks (e.g., ethernet, radio access network (radio access network, RAN), wireless local area network (wirelesslocal area networks, WLAN), etc.). Alternatively, the second communication bus 114 may be an RS485 communication bus.

Fig. 4 is an interaction schematic diagram of a communication module 113 and a cloud server 500 of a multi-split air conditioning system according to an exemplary embodiment of the present application.

As shown in fig. 4, the cloud server 500 may establish a communication connection with the communication module 113 of the multi-split air conditioning system. By way of example, the establishment of the communication connection may be accomplished using any known network communication protocol. The network communication protocol may be various wired or wireless communication protocols such as Ethernet, universal serial bus (universal serial bus, USB), FIREWIRE (FIREWIRE), any cellular network communication protocol (e.g., 3G/4G/5G), bluetooth, wireless Fidelity (wireless fidelity, wi-Fi), NFC, or any other suitable communication protocol. The communication connection may be a bluetooth connection, NFC, zigbee, wireless fidelity (wireless fidelity, wi-Fi), or the like. This is not particularly limited in the embodiments of the present application.

It will be appreciated by those skilled in the art that the hardware architecture illustrated in the embodiments of the present application does not constitute a limitation of the air conditioning subsystem, which may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.

As shown in fig. 5, an embodiment of the present application provides a multi-split air conditioning system and a control method thereof, where the method is applied to a controller, and the controller may be the controller 50 in the multi-split air conditioning system, and the method includes:

S101, for each air conditioning subsystem in a plurality of air conditioning subsystems, after the multi-connected air conditioning system is powered on for the first time, acquiring an on-line scheme of the air conditioning subsystem.

In some embodiments, for each air conditioning subsystem of the plurality of air conditioning subsystems, in order to establish a binding relationship between a communication module of the air conditioning subsystem and the air conditioning subsystem, after the multi-split air conditioning system is powered on for the first time, the controller obtains an online scheme of the air conditioning subsystem.

Alternatively, the controller may acquire an online scheme of the air conditioning subsystem in several ways.

Mode 1, active acquisition.

In some embodiments, after the multi-split air conditioning system is powered on for the first time, the controller sends an instruction to each device in the air conditioning subsystem through the first communication bus to instruct each device of the air conditioning subsystem to report the address number of the device and the connected device, wherein the instruction indicates that the installation of the multi-split air conditioning system is completed. After each device of the air conditioning subsystem receives the instruction, the address number of the device and the connected device are reported through the first bus. After receiving the address number of the controller and the connected device reported by each device, the controller generates an on-line scheme of the air conditioning subsystem, namely, acquires the on-line scheme of the air conditioning subsystem. The on-line scheme of the air conditioning subsystem comprises the connection relation among devices in the air conditioning subsystem, and also comprises the number of indoor units, the address numbers of the indoor units, the number of the outdoor units and the address numbers of the outdoor units in the air conditioning subsystem.

And 2, passive acquisition.

In some embodiments, after the multi-split air conditioning system is powered on for the first time, each device of the air conditioning subsystem reports its own address number and the connected device to the controller through the first communication bus, and after receiving the own address number and the connected device reported by each device, the controller generates an online scheme of the air conditioning subsystem, that is, acquires the online scheme of the air conditioning subsystem.

S102, sending the online scheme of the air conditioning subsystem to a communication module of the air conditioning subsystem through a second communication bus, and controlling the communication module of the air conditioning subsystem to establish a binding relationship between the communication module of the air conditioning subsystem and the air conditioning subsystem according to the online scheme of the air conditioning subsystem.

It should be understood that the second communication bus is connected with the outdoor unit and the communication module in the same air conditioning subsystem, so that when the controller sends the online scheme through the second communication bus, the online scheme can only be sent to the communication module connected with the outdoor unit through the second communication bus, and the correct corresponding relation between the online scheme of the air conditioning subsystem and the communication module of the air conditioning subsystem is ensured, so that the communication module of the air conditioning subsystem can be correctly bound with the air conditioning subsystem where the communication module is located when the binding relation is established according to the online scheme.

In some embodiments, the binding relationship is used for establishing a corresponding relationship between the communication module and the device in the air conditioning subsystem, so that the communication module can forward the control instruction of the cloud server to the device in the air conditioning subsystem where the communication module is located.

In some embodiments, after the communication module establishes a binding relation with the air conditioning subsystem, the communication module can forward the control instruction to the air conditioning subsystem where the communication module is located according to the binding relation after receiving the control instruction sent by the cloud server, so that the control instruction can be prevented from being sent to the wrong air conditioning subsystem, further, the occurrence of the condition that the control of the multi-split air conditioning system is disordered is avoided, and the probability of occurrence of the control disorder of the multi-split air conditioning system is reduced.

For example, assuming that the multi-split air conditioning system includes an air conditioning subsystem 11 and an air conditioning subsystem 12, a binding relationship is established between a communication module 113 in the air conditioning subsystem 11 and the air conditioning subsystem 11, and a binding relationship is established between a communication module in the air conditioning subsystem 12 and the air conditioning subsystem 12. When the communication module 113 receives the control instruction of the cloud server to the air conditioning subsystem 11, the communication module 113 can correctly forward the control instruction to the air conditioning subsystem 11 according to the binding relation with the air conditioning subsystem 11, so that the cloud server can correctly control the air conditioning subsystem 11, and the condition that the multi-split air conditioning system is disordered in control is avoided.

The above embodiment brings at least the following advantages: according to the multi-split air conditioning system, the second communication bus is added to each air conditioning subsystem, and the outdoor units and the communication modules in the same air conditioning subsystem are connected, so that the outdoor units and the communication modules in the same air conditioning subsystem are connected in one-to-one correspondence. After the controller obtains the online scheme of the air conditioning subsystem through the first communication bus, the online scheme of the air conditioning subsystem is sent to the communication module of the air conditioning subsystem through the second communication bus, so that the communication module establishes a binding relation with the air conditioning subsystem according to the online scheme of the air conditioning subsystem.

It can be understood that in the process of sending the online scheme of the air conditioning subsystem to the communication module of the air conditioning subsystem through the second communication bus, because the second communication bus realizes one-to-one correspondence between the outdoor units in the same air conditioning subsystem and the communication modules, the online scheme of the air conditioning subsystem cannot be sent to the communication modules of other subsystems, so that the communication modules can be prevented from establishing an incorrect binding relationship with other air conditioning subsystems, the communication modules can forward control instructions to the correct air conditioning subsystems according to the correct binding relationship, the occurrence of control disorder of the multi-split air conditioning system is avoided, and the probability of occurrence of the control disorder of the multi-split air conditioning system is further reduced.

The above embodiments focus on how the air conditioning subsystem in the multi-split air conditioning system establishes a binding relationship with the communication module, and in some embodiments, after the communication module establishes the binding relationship between the communication module of the air conditioning subsystem and the air conditioning subsystem, as shown in fig. 6, the method further includes the following steps:

s201, uploading the binding relation to a cloud server.

In some embodiments, after establishing the binding relationship between the communication module of the air conditioning subsystem and the air conditioning subsystem, the controller may control the communication module to upload the binding relationship to the cloud server, so that the binding relationship established between the communication module and the air conditioning subsystem is backed up in the cloud server. In some embodiments, the communication module may obtain the device information of the air conditioning subsystem from the outdoor unit through the second communication bus, and after the controller uploads the binding relationship to the cloud server through the communication module, the controller may further upload the device information of the air conditioning subsystem to the cloud server through the communication module, so that the cloud server determines the control instruction of the air conditioning subsystem according to the device information of the air conditioning subsystem, so as to complete cloud control of the air conditioning subsystem. Wherein the device information of the air conditioning subsystem includes one or more of operation data, alarm code, manufacturing code, signal code, current time, and geographical location information of the air conditioning subsystem.

In some embodiments, after the cloud server receives the binding relationship, the cloud server may determine, according to the device information and the binding relationship of the air conditioning subsystem uploaded by the communication module of the air conditioning subsystem, a control instruction to which each device in the air conditioning subsystem belongs, and then issue the control instruction to the communication module of the air conditioning subsystem.

After receiving the control instruction from the cloud server, the communication module can correctly forward the control instruction of each device to each device according to the binding relation, and can not forward the control instruction to other air conditioning subsystems, so that the occurrence of control disorder is avoided, the probability of occurrence of the control disorder of the multi-split air conditioning system is reduced, and the normal operation of the multi-split air conditioning system is guaranteed.

In some embodiments, as shown in fig. 7, the method further comprises the steps of:

s301, monitoring a first communication bus.

It should be understood that the basic mechanism of the first communication bus in the multi-split air conditioning system is preemptive communication, so that devices connected with the first communication bus all preempt communication opportunities to send data, the signaling amount of some devices is larger, the occupancy amount of the first communication bus is also larger, and the preemptive communication opportunities among the devices may cause congestion of the first communication bus, so that the multi-split air conditioning system is disturbed in control.

In some embodiments, in order to avoid that the first communication bus is congested due to the fact that the same type of equipment in the multi-split air conditioning system sends the same information through the first communication bus, a situation that control delay occurs in the multi-split air conditioning system occurs, and in the running process of the multi-split air conditioning system, a controller monitors the first communication bus.

It can be understood that each device in the multi-split air conditioning system realizes communication connection through the first communication bus, and the monitoring of the first communication bus can monitor the information sent by each device through the first communication bus.

S302, after monitoring that point detection information occurs in the first communication bus, the information sending device is determined according to the point detection information.

The spot check information is information that one device requests device information from another device in the multi-split air conditioning system.

In some embodiments, when the multi-split air conditioning system is in an operation state, some devices in the multi-split air conditioning system may be used as information sending devices to periodically send spot check information to other devices in the multi-split air conditioning system, so as to obtain device information of other devices in the multi-split air conditioning system. For example, a communication module is used as an information sending device to periodically send spot check information to the indoor unit through the first communication bus so as to instruct the indoor unit to report own device information, and then the communication module obtains the device information of the indoor unit through the first communication bus, and then uploads the device information of the indoor unit to the cloud server, at this time, the outdoor unit is the information receiving device.

In some embodiments, the spot check information further includes an address number of the information transmitting device, an address number of the information receiving device. The controller may determine the information transmitting apparatus according to an address number of the information transmitting apparatus included in the spot check information after monitoring the spot check information, so as to determine the same type of information transmitting apparatus as the information transmitting apparatus.

S303, controlling the information sending equipment of the same type as the information sending equipment to stop sending the spot check information.

It can be understood that after the controller monitors that one information sending device sends the spot check information through the first communication bus, the information sending device sends the spot check information through the first communication bus, that is, sends the spot check information in a broadcast mode, and after one information sending device sends the spot check information, other information receiving devices all receive the spot check information, so that the information sending device of the same type as the information sending device does not need to send the spot check information again.

Based on the information, after the controller monitors that one information sending device sends the spot inspection information through the first communication bus, the information sending devices of the same type as the information sending device are controlled to stop sending the spot inspection information, so that the situation that the first communication bus is blocked due to the fact that the information sending devices of the same type as the information sending device send the spot inspection information through the first communication bus at the same time can be avoided, and the probability of control disorder of the multi-split air conditioning system is reduced.

In some embodiments, after the information receiving device receives the spot check information, the information receiving device transmits a reply message to the information transmitting device through the first communication bus.

The reply information is reply information of the information receiving device to the spot check information.

In one aspect, after one information sending device sends the spot check information through the first communication bus, other information receiving devices all receive the spot check information, so that the information sending device of the same type as the information sending device is not required to send the spot check information again.

On the other hand, the first communication bus not only realizes the interconnection of the outdoor unit, the indoor unit and the communication module in the same air conditioning subsystem, but also realizes the connection among the air conditioning subsystems. When the information receiving apparatus transmits the reply information to the information transmitting apparatus through the first communication bus, the reply information is transmitted to all the information receiving apparatuses through the first communication bus. Thus, the device with the same device information requirement as the information sending device can acquire the reply information of the spot check information. Therefore, the controller controls the information transmitting device of the same type as the information transmitting device to stop transmitting the spot check information after monitoring that one information transmitting device transmits the spot check information through the first communication bus.

For example, an environment temperature value where an indoor unit is required to be obtained by a communication module of an air conditioning subsystem in a multi-split air conditioning system is described as an example.

When the communication module needs to acquire the environmental temperature value of the indoor unit, the communication module sends point inspection information through the first communication bus, after the controller monitors the point inspection information, the controller confirms that the equipment for sending the point inspection information is the communication module according to the point inspection information, and then controls the communication modules of other air conditioning subsystems to stop sending the point inspection information. After the communication modules receive the spot inspection information, the environment temperature value of the indoor unit is replied through the first communication bus, and because each communication module is connected with the first communication bus, the communication modules of all the air conditioning subsystems can all receive the environment temperature value of the indoor unit replied through the first communication bus.

In some embodiments, as shown in fig. 8, the method further comprises the steps of:

s401, monitoring a first communication bus.

The description of step S401 may refer to the description of step S301, which is not repeated herein.

And S402, after receiving the confirmation information sent by the communication module of any one of the air conditioning subsystems, controlling the communication modules of the other air conditioning subsystems to stop sending the confirmation information.

The confirmation information is used for indicating the communication module of the air conditioner subsystem to receive the reply information.

Alternatively, the acknowledgement information may be an acknowledgement character (acknowledge character, ACK).

In some embodiments, after the communication module of any one of the plurality of air conditioning subsystems receives the reply message, an acknowledgement message is sent over the first communication bus to indicate that the communication module has received the reply message. After the controller monitors the acknowledgement information in the first communication bus, all communication modules are considered to have received the reply information. And controlling the communication modules in other air conditioning subsystems to stop sending the confirmation information. Therefore, by sending the acknowledgement information once to represent that reply information has been received by all communication modules, the plurality of communication modules can be prevented from sending the acknowledgement information at the same time, and the probability of control disorder of the multi-split air conditioning system is reduced.

For example, assume that the multi-split air conditioning system includes an air conditioning subsystem 11 and an air conditioning subsystem 12, and the air conditioning subsystem 11 includes a communication module 113 and an indoor unit 112, where the communication module 113 and the air conditioning subsystem 11 establish a binding relationship, and the communication module in the air conditioning subsystem 12 and the air conditioning subsystem 12 establish a binding relationship. After the communication module 113 receives the reply message of the indoor unit 112, the communication module 113 transmits the confirmation message through the first communication bus. At this time, the control monitors that the acknowledgement information appears in the first communication bus, considers that all communication modules have received the reply information, and controls the communication modules in the air-conditioning subsystem 12 to stop sending the acknowledgement information. In this way, the communication module 113 and the communication module in the air conditioning subsystem 12 can be prevented from sending the confirmation information at the same time, the occurrence of the control disorder of the multi-split air conditioning system is avoided, and the probability of the control disorder of the multi-split air conditioning system is reduced.

In some embodiments, the method further comprises: under the condition that the centralized control screen is detected to be connected to the multi-split air conditioning system, controlling a communication module in each air conditioning subsystem to enter a silent state; when one communication module is in a silent state, the control instruction issued by the cloud server is stopped from being forwarded to an outdoor unit and an indoor unit in an air conditioning subsystem where the communication module is positioned.

In some embodiments, the centralized control screen has a unique device address number, and when the multi-split air conditioning system is running, the controller detects the device address number of the centralized control screen to confirm whether the centralized control screen is connected to the multi-split air conditioning system. In order to avoid the control command of the cloud server forwarded by the communication module, control conflict is generated between the communication module and the control command generated by the centralized control screen in response to user operation, and control disorder is caused. Under the condition that the centralized control screen is detected to be connected to the multi-split air conditioning system, the communication module in each air conditioning subsystem is controlled to enter a silent state.

When one communication module is in a silent state, the control instruction issued by the cloud server is stopped from being forwarded to an outdoor unit and an indoor unit in an air conditioning subsystem where the communication module is positioned, and at the moment, the communication module can still acquire equipment information of the multi-split air conditioning system and upload the equipment information to the cloud server.

In some embodiments, after the communication module enters the silence state, the communication module stops acquiring the device information through the first communication bus and acquires the device information only through the second communication bus.

In some embodiments, after the communication module enters the silence state, the controller controls the communication module to upload state information of the communication module in the silence state to the cloud server, so that the cloud server stops issuing the control instruction. Therefore, on one hand, the cloud server stops issuing control instructions, on the other hand, the communication module stops forwarding the control instructions issued by the cloud server to the outdoor unit and the indoor unit in the air conditioning subsystem where the communication module is located, control conflict between the control instructions forwarded by the communication module and the control instructions generated by the centralized control screen in response to user operation can be avoided, the occurrence of control disorder of the multi-split air conditioning system is avoided, and the probability of occurrence of the control disorder of the multi-split air conditioning system is reduced.

The following describes an exemplary embodiment of a control method of a multi-split air conditioning system according to the present application, and fig. 9 is a schematic overall flow chart of the control method of the multi-split air conditioning system according to the exemplary embodiment of the present application.

And for each air conditioning subsystem in the plurality of air conditioning subsystems, after the multi-split air conditioner is powered on for the first time, acquiring the on-line scheme of the air conditioning subsystem through the first communication bus. The online scheme comprises a connection relation among devices in the air conditioning subsystem. After the online scheme of the air conditioner subsystem is acquired, the online scheme is sent to the communication module of the air conditioner subsystem through the second communication bus, so that the communication module can establish a binding relationship between the communication module of the air conditioner subsystem and the air conditioner subsystem according to the online scheme of the air conditioner subsystem, and the binding relationship is uploaded to the cloud server.

When the multi-split air conditioning system is in an operating state, the controller monitors the first communication bus, determines the information sending equipment according to the point detection information under the condition that the point detection information appears in the first communication bus, and controls the information sending equipment of the same type as the information sending equipment to stop sending the point detection information.

When receiving the confirmation information sent by the communication module of any one of the plurality of air conditioning subsystems, the communication module controlling the other air conditioning subsystem stops sending the confirmation information.

The embodiment of the application may divide the functional modules of the controller according to the above method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated modules may be implemented in hardware or in software functional modules. Optionally, the division of the modules in the embodiments of the present application is schematic, which is merely a logic function division, and other division manners may be actually implemented.

The embodiment of the present application further provides a hardware structure schematic of a controller, as shown in fig. 10, where the controller 3000 includes a processor 3001, and optionally, a memory 3002 and a communication interface 3003 connected to the processor 3001. The processor 3001, the memory 3002, and the communication interface 3003 are connected by a bus 3004.

The processor 3001 may be a central processing unit (central processing unit, CPU), a general purpose processor network processor (network processor, NP), a digital signal processor (digital signal processing, DSP), a microprocessor, a microcontroller, a programmable logic device (programmable logic device, PLD), or any combination thereof. The processor 3001 may also be any other apparatus having processing functionality, such as a circuit, a device, or a software module. The processor 3001 may also include a plurality of CPUs, and the processor 3001 may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, or processing cores for processing data (e.g., computer program instructions).

The memory 3002 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (random access memory, RAM) or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable read-only memory (electrically erasable programmable read-only memory, EEPROM), a compact disc read-only memory (compact disc read-only memory) or other optical disk storage, optical disk storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, as embodiments of the present application are not limited in this regard. The memory 3002 may be separate or integrated with the processor 3001. Wherein the memory 3002 may contain computer program code. The processor 3001 is configured to execute computer program codes stored in the memory 3002, thereby implementing the control method of the multi-split air conditioning system provided in the embodiment of the present application.

The communication interface 3003 may be used to communicate with other devices or communication networks (e.g., ethernet, radio access network (radio access network, RAN), wireless local area network (wireless local area networks, WLAN), etc.). The communication interface 3003 may be a module, a circuit, a transceiver, or any device capable of enabling communications.

Bus 3004 may be a peripheral component interconnect standard (peripheral component interconnect, PCI) bus or an extended industry standard architecture (extended industry standard architecture, EISA) bus, among others. The bus 3004 may be classified into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in fig. 10, but not only one bus or one type of bus.

The embodiment of the application also provides a computer readable storage medium, wherein the computer readable storage medium comprises computer execution instructions, and when the computer execution instructions run on a computer, the computer is caused to execute the control method of the multi-split air conditioning system provided by the embodiment.

The embodiment of the application also provides a computer program product which can be directly loaded into a memory and contains software codes, and the computer program product can realize the control method of the multi-split air conditioning system provided by the embodiment after being loaded and executed by a computer.

Those of skill in the art will appreciate that in one or more of the examples described above, the functions described herein may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, these functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

From the foregoing description of the embodiments, it will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of functional modules is illustrated, and in practical application, the above-described functional allocation may be implemented by different functional modules according to needs, i.e. the internal structure of the apparatus is divided into different functional modules to implement all or part of the functions described above.

In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described embodiments of the apparatus are merely illustrative, and the division of modules or units, for example, is merely a logical function division, and other manners of division are possible when actually implemented. For example, multiple units or components may be combined or may be integrated into another device, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and the parts shown as units may be one physical unit or a plurality of physical units, may be located in one place, or may be distributed in a plurality of different places. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units. The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a readable storage medium. Based on such understanding, the technical solution of the embodiments of the present application may be essentially or a part contributing to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, including several instructions for causing a device (may be a single-chip microcomputer, a chip or the like) or a processor (processor) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, etc.

The foregoing is merely a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A multi-split air conditioning system, comprising:

the system comprises a plurality of air conditioning subsystems, a cloud server and a cloud server, wherein one air conditioning subsystem comprises at least one outdoor unit, a plurality of indoor units and a communication module, and the communication module is used for realizing communication connection between the air conditioning subsystem where the communication module is positioned and the cloud server;

a first communication bus for realizing communication connection among the plurality of air conditioning subsystems and communication connection among the outdoor unit, the indoor unit and the communication module in any one of the air conditioning subsystems;

the multi-split air conditioning system is characterized by further comprising:

the plurality of second communication buses, one end of one second communication bus is connected with the outdoor unit in one air conditioning subsystem, and the other end of the second communication bus is connected with the communication module in the same air conditioning subsystem, so as to realize communication connection between the outdoor unit and the communication module in one air conditioning subsystem;

a controller configured to:

for each air conditioning subsystem in the plurality of air conditioning subsystems, after the multi-connected air conditioning system is powered on for the first time, acquiring an online scheme of the air conditioning subsystem through the first communication bus; the online scheme comprises a connection relation among all devices in the air conditioning subsystem;

And sending the online scheme of the air conditioning subsystem to a communication module of the air conditioning subsystem through a second communication bus, and controlling the communication module of the air conditioning subsystem to establish a binding relationship between the communication module of the air conditioning subsystem and the air conditioning subsystem according to the online scheme of the air conditioning subsystem.

2. The multi-split air conditioning system of claim 1, wherein the controller is configured to control the communication module of the air conditioning subsystem to establish a binding relationship between the communication module of the air conditioning subsystem and the air conditioning subsystem according to an online scheme of the air conditioning subsystem, and is further configured to:

and the communication module controlling the air conditioning subsystem uploads the binding relation to the cloud server.

3. The multi-split air conditioning system of claim 1 or 2, wherein the controller is further configured to:

monitoring the first communication bus;

after monitoring that point detection information appears in the first communication bus, determining information sending equipment according to the point detection information;

and controlling the information sending equipment of the same type as the information sending equipment to stop sending the spot check information.

4. The multi-split air conditioning system of claim 3, wherein the controller is further configured to:

monitoring the first communication bus;

after receiving confirmation information sent by a communication module of any one of the plurality of air conditioning subsystems, controlling communication modules of other air conditioning subsystems to stop sending the confirmation information; the confirmation information is used for indicating that the communication module of the air conditioning subsystem receives reply information, and the reply information is reply information of the information receiving equipment to the spot check information.

5. The multi-split air conditioning system of claim 3, further comprising:

the centralized control screen is connected with the first communication bus and is used for realizing interaction with a user;

the controller is further configured to:

under the condition that the centralized control screen is detected to be connected to the multi-split air conditioning system, controlling a communication module in each air conditioning subsystem to enter a silent state; when one communication module is in a silent state, the control instruction issued by the cloud server is stopped from being forwarded to an outdoor unit and an indoor unit in an air conditioning subsystem where the communication module is positioned.

6. The multi-split air conditioning system of claim 1, wherein the second communication bus is an RS485 communication bus, and the controller is further configured to:

for each air conditioning subsystem in the plurality of air conditioning subsystems, transmitting the equipment information of the air conditioning subsystem to a communication module of the air conditioning subsystem through the second communication bus, and controlling the communication module of the air conditioning subsystem to upload the equipment information of the air conditioning subsystem to a cloud server; the device information of the air conditioning subsystem includes one or more of operation data, alarm codes, manufacturing codes, signal codes, current time, and geographical location information of the air conditioning subsystem.

7. A control method of a multi-split air conditioning system, comprising the multi-split air conditioning system of any one of claims 1 to 6, the method comprising:

for each air conditioning subsystem in a plurality of air conditioning subsystems, after the multi-connected air conditioning system is electrified for the first time, acquiring an online scheme of the air conditioning subsystem; the online scheme comprises a connection relation among all devices in the air conditioning subsystem;

And sending the online scheme of the air conditioning subsystem to a communication module of the air conditioning subsystem through a second communication bus, and controlling the communication module of the air conditioning subsystem to establish a binding relationship between the communication module of the air conditioning subsystem and the air conditioning subsystem according to the online scheme of the air conditioning subsystem.

8. The control method of the multi-split air conditioning system according to claim 7, it is characterized in that the method comprises the steps of,

monitoring a first communication bus;

after monitoring that point detection information appears in the first communication bus, determining information sending equipment according to the point detection information;

and controlling the information sending equipment of the same type as the information sending equipment to stop sending the spot check information.

9. The method for controlling a multi-split air conditioning system according to claim 8, further comprising:

monitoring the first communication bus;

after receiving confirmation information sent by a communication module of any one of the plurality of air conditioning subsystems, controlling communication modules of other air conditioning subsystems to stop sending the confirmation information; the confirmation information is used for indicating that the communication module of the air conditioning subsystem receives reply information, and the reply information is reply information of the information receiving equipment to the spot check information.

10. The method for controlling a multi-split air conditioning system according to claim 8, further comprising:

under the condition that the centralized control screen is detected to be connected to the multi-split air conditioning system, controlling a communication module in each air conditioning subsystem to enter a silent state; when one communication module is in a silent state, the control instruction issued by the cloud server is stopped from being forwarded to an outdoor unit and an indoor unit in an air conditioning subsystem where the communication module is positioned.