CN110160204B - Multi-split air conditioning system control method and multi-split air conditioning system - Google Patents
Multi-split air conditioning system control method and multi-split air conditioning system Download PDFInfo
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- CN110160204B CN110160204B CN201910502735.7A CN201910502735A CN110160204B CN 110160204 B CN110160204 B CN 110160204B CN 201910502735 A CN201910502735 A CN 201910502735A CN 110160204 B CN110160204 B CN 110160204B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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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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Abstract
The invention discloses a control method of a multi-split air conditioning system, which comprises the following steps: the multi-split air conditioning system is in an operating state; judging whether to generate a working state change signal of the indoor controller; if the indoor controller working state change signal is generated, the outdoor unit stores the field setting parameters in the current running state; and the outdoor unit outputs the field setting parameters to the indoor controller in the working state and controls the indoor controller in the working state to work according to the field setting parameters. Simultaneously, the utility model also discloses a many online air conditioning system. According to the control method of the multi-split air conditioning system disclosed by the invention, when a newly accessed indoor controller exists, or one of the indoor controllers is disconnected, or a fault occurs, the system can work according to the field setting parameters in normal operation, the operation setting of the newly accessed indoor controller cannot be changed, and the system can be ensured to operate stably.
Description
Technical Field
The invention belongs to the technical field of air conditioning, and particularly relates to a control method of a multi-split air conditioning system and the multi-split air conditioning system.
Background
The multi-split air conditioner is a category of central air conditioners, and specifically, one outdoor unit is connected to two or more indoor units through a pipe. Such a structure has been widely used in a central air conditioning system, a central heating system, and a ventilation and purification system, and performs purification (or purification), cooling (or heating), humidification (or dehumidification), and the like on air in a plurality of rooms in the same building or a plurality of buildings in the same building group, and performs transportation and distribution. The multi-split air conditioning system aims to create an indoor air environment with standard temperature, standard humidity, standard cleanliness and freshness so as to meet the air conditioning requirements of living comfort or production process.
The controller in the multi-split air conditioner is usually disposed in the indoor side. One controller is arranged to match each indoor terminal. Each controller is used for setting the current working parameters on site. The user may set the operating parameters to different values. The indoor units and the outdoor units of the multi-split air conditioner respond to different set parameters to realize different requirements of users. Along with the increasing requirements of users, the complexity of setting the working parameters is also increased. Communication data between the indoor unit and the outdoor unit are more, and a large amount of redundant information exists, so that the response speed of the air conditioning system is reduced, the control accuracy is reduced, and the use experience of a user is reduced.
Disclosure of Invention
Based on the requirements of users of the multi-split air-conditioning system that the demands are continuously increased and the installation and use environments are gradually diversified, the invention aims to design and disclose a control method of the multi-split air-conditioning system so as to improve the actual experience of the users.
In order to realize the purpose of the invention, the invention is realized by adopting the following technical scheme:
a control method of a multi-split air conditioning system comprises the following steps:
the multi-split air conditioning system is in an operating state;
judging whether to generate a working state change signal of the indoor controller;
if the indoor controller working state change signal is generated, the outdoor unit stores the field setting parameters in the current running state;
and the outdoor unit outputs the field setting parameters to the indoor controller in the working state and controls the indoor controller in the working state to work according to the field setting parameters.
According to the control method of the multi-split air conditioning system disclosed by the invention, when a newly accessed indoor controller exists, or one of the indoor controllers is disconnected, or a fault occurs, the system can work according to the field setting parameters in normal operation, the operation setting of the newly accessed indoor controller cannot be changed, and the system can be ensured to operate stably.
Also discloses a multi-split air conditioning system, which comprises
A first determination unit for determining whether to generate an indoor controller operation state change signal in an operation state;
the storage unit is used for storing the field setting parameters in the current running state when the working state change signal of the indoor controller is generated; and
and the first setting unit is used for outputting the field setting parameters stored by the storage unit to the indoor controller in a working state.
According to the multi-split air conditioning system disclosed by the invention, when the working state of the indoor controller changes according to the user requirement or the field requirement, the outdoor unit can automatically address the indoor controller and establish connection, and the field setting parameters in the current running state stored when the working state changes are output to the corresponding indoor controller; if the number of the indoor controllers in the working state is increased, the newly added indoor controllers can also operate according to the field set parameters, additional setting by a user is not needed, the stable operation of the whole multi-split air conditioning system can be ensured, the indoor terminals matched with the newly added indoor controllers can also be enabled to efficiently enter the stable working state, the field setting is kept consistent, and the using effect is good.
Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a multi-split air conditioning system;
fig. 2 is a flowchart illustrating an embodiment of a method for controlling a multi-split air conditioning system according to the present disclosure;
fig. 3 is a flowchart of automatic addressing in the control method of the multi-split air conditioning system disclosed in fig. 2;
fig. 4 is a timing diagram of control signals in the control method of the multi-split air conditioning system disclosed in fig. 3;
fig. 5 is a communication timing diagram of field setting parameters in the multi-split air conditioning system control method disclosed in fig. 2;
fig. 6 is a flowchart illustrating another embodiment of a method for controlling a multi-split air conditioning system according to the present disclosure;
fig. 7 is a flowchart illustrating another embodiment of a method for controlling a multi-split air conditioning system according to the present disclosure;
fig. 8 is a block diagram schematically illustrating the structure of an embodiment of a multi-split air conditioning system disclosed in the present invention;
fig. 9 is a block diagram schematically illustrating the construction of another embodiment of a multi-split air conditioning system according to the present disclosure;
fig. 10 is a block diagram schematically illustrating an indoor side in another embodiment of a multi-split air conditioning system according to the present disclosure.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and examples.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1, the control method of the multi-split air conditioning system 100 disclosed in the present invention is applied to a central heating system, and more specifically, to a heat pump floor heating system in this embodiment. The floor heating is short for floor radiation heating, the whole floor is used as a radiator, the whole floor is uniformly heated through a heating medium in a floor radiation layer, and the heating purpose is achieved by conducting from bottom to top by utilizing the law of heat storage and upward radiation of heat of the floor. However, it is clearly understood by those skilled in the art that other forms of indoor radiators, such as wall-mounted radiators, air-conditioning units, hot water terminals, etc., are also within the scope of the present invention. In addition, in the present embodiment, the multi-split air conditioning system 100 is a heat pump heating system, the heat source of which includes, but is not limited to, air, groundwater, soil, etc., and the power unit may be a compression heat pump unit, which includes, but is not limited to, a piston type, a screw type, a scroll type, a centrifugal type, etc. In certain specific applications, the power unit may also be a solar absorber heat pump. In this embodiment, a user may set parameters of the multi-split air conditioner through an indoor controller disposed indoors, thereby further controlling the operation of the multi-split air conditioning system.
As shown in fig. 1, in this embodiment, the indoor controller 102 is a wire controller, that is, a controller integrated with a trigger button or a human-computer interaction interface, and a main board, such as a single chip microcomputer, is disposed in the indoor controller 102. The indoor controller 102 is electrically connected to the outdoor unit 101, and directly transmits parameters input by a user to the outdoor unit 101 in accordance with a coding format of a predetermined communication protocol. But those skilled in the art will certainly understand that the indoor controller 102 may also be a remote controller that establishes wireless communication with a main board provided in the indoor terminal through infrared or the like. In addition, the wire controller and the remote controller can be provided with a wireless communication module, and the wire controller and the remote controller provided with the wireless communication module can be communicated with a personal computer, a remote server, a handheld device, a smart phone and the like. These communications may be in a one-to-one communication mode, or through one or more servers in a local area network, or through cloud server communications to receive user-set parameters.
From the viewpoint of hardware structure, the multi-split air conditioning system 100 mainly includes: the outdoor unit 101 is provided with a compression heat pump unit and an electric control assembly in the outdoor unit 101. The electric control assembly takes a main board as a core component, such as a singlechip and the like. The system also comprises an indoor terminal arranged at one indoor side, such as a fan coil (shown as 103 in figure 1) or a floor heating pipeline (shown as 104 in figure 1) and the like; and an indoor controller 102. One outdoor unit 101 is matched with a plurality of indoor terminals, and one indoor controller 102 is arranged in each room or each indoor terminal in a matching manner, and fig. 1 shows a case where one indoor controller 102 is arranged in each room. Each of the indoor controllers 102 establishes communication with the outdoor unit 101 according to a predetermined communication protocol. For example, a single-channel half-duplex asynchronous serial communication mode may be adopted between the indoor controller 102 and the outdoor unit 101, that is, various data signals may be transmitted through a data group formed by binary coding. For example, the communication data between the outdoor unit 101 and the indoor controller 102 is composed of 16 bytes, each byte is composed of a group of 8-bit binary codes, and when communication is performed, a byte representing the start identification code is transmitted first, and then data information of 1 st to 16 th bytes is transmitted in sequence. Finally, an end identification code byte is sent until one communication is completed. It is generally preferable to transmit a communication source address (self address) and a communication destination address (recipient address) in 1 st and 2 nd bytes, and start transmitting a command parameter in 3 rd byte.
Preferably, one outdoor unit 101 can be connected to 16 indoor controllers at most. On the outdoor unit 101 side, the outdoor unit 101 main board calculates parameters such as the operating frequency of the compressor heat pump unit and the opening degree of the electronic expansion valve according to the received parameters, such as the number of opened indoor controllers, the set outlet water temperature, the set room temperature, the actual water temperature and the like, according to the set control algorithm. The control algorithm can adopt a PID (proportion integration differentiation) control algorithm, a fuzzy control algorithm and other control algorithms which are already mature and applied in the existing multi-split air conditioning system, and the control algorithm for calculating the running frequency of the compressor and the opening degree of the electronic expansion valve is not the protection key point of the invention and is not described again. The multi-split air conditioning system can automatically adjust the rotating speed of the compressor and/or the opening degree of the electronic expansion valve according to the change of the heat load of the air conditioning room/heating room, adjust the outlet water temperature or the room temperature in the air conditioning room, and realize the effect of controlling the air conditioner.
As shown in fig. 2, a method for controlling a multi-split air conditioning system according to a first embodiment of the present invention includes the steps of:
powering on the multi-split air conditioning system and entering an operation state; the outdoor unit main board calculates the running frequency of the compressor heat pump unit and the opening degree of the electronic expansion valve according to the set outlet water temperature or the set room temperature, the actual water temperature and other parameters according to a set control algorithm, and executes the action to reach the ideal outlet water temperature or the room temperature in the air conditioning room.
Judging whether to generate an indoor controller working state change signal: it should be noted that, the change of the working state of the indoor controller defined herein includes the change of the indoor controller from the non-working state to the working state, or from the working state to the non-working state, or from the working state to the failure state; the indoor controllers are converted from the non-working state to the working state, or the indoor controllers are converted from the working state to the non-working state through the switching signals of each indoor controller, and the fault state can be obtained through the fault signal port of each indoor controller.
If one of the indoor controllers generates a working state change signal, the indoor controller outputs the working state change signal to the outdoor unit, and the outdoor unit stores field setting parameters in the current running state, wherein the field setting parameters include but are not limited to setting water outlet temperature, setting wind speed or setting room temperature and the like.
The outdoor unit outputs the field setting parameters in the current running state to all the indoor controllers in the working state, and controls all the indoor controllers in the working state to work according to the field setting parameters.
Therefore, when the working state of the indoor controller changes according to user requirements or field requirements, the outdoor unit can automatically establish connection with the indoor controller, and output the field setting parameters in the current running state stored when the working state changes to the corresponding indoor controller; if the number of the indoor controllers in the working state is increased, the newly added indoor controllers can also operate according to the field set parameters, additional setting by a user is not needed, the stable operation of the whole multi-split air conditioning system can be ensured, the indoor terminals matched with the newly added indoor controllers can also be enabled to efficiently enter the stable working state, the field setting is kept consistent, and the using effect is good.
Specifically, as shown in fig. 3, the step of controlling all the indoor controllers in the working state to work according to the field setting parameters by the outdoor unit includes the following steps:
the outdoor unit generates a broadcast test signal containing a random address, wherein the random address is generated within a set address range; the set address range may be set in advance by a technician according to the model of the multi-split air conditioning system and the number of accessible indoor controllers in the multi-split air conditioning system and stored in a storage unit of the outdoor unit main board.
Initializing all indoor controllers in a starting state, and randomly generating a test address by each indoor controller, wherein the test address is generated in the set address range; as shown in fig. 4, addresses E002, E03F, E0a5 and the like corresponding to the indoor controllers B, a, C are schematically shown in fig. 4, and only three indoor controllers are shown in fig. 4, but of course, more indoor controllers may be provided.
All indoor controllers in the starting state receive broadcast test signals which are generated by an outdoor unit and contain random addresses, and each indoor controller judges whether the test address generated by the indoor controller is the same as the random address in the broadcast test signals.
If the test address randomly generated by the indoor controller itself is the same as the random address in the broadcast test signal, the indoor controller transmits a response message to the outdoor unit.
After receiving the response information, the outdoor unit judges whether the response information is correct; and if the response information is correct, the outdoor unit outputs a confirmation signal. It should be noted that, the main step of determining whether the response information is correct is to determine whether two or more response information are received, and if two or more response information are received, it indicates that the response information is incorrect, the outdoor unit generates a broadcast test signal containing another random address again, and repeats the test process until the broadcast test signal containing one random address can only receive one response signal from the indoor controllers, that is, the response information is correct, so as to avoid address collision of multiple indoor controllers.
After outputting the unique confirmation signal, the outdoor unit outputs the broadcast test signal containing other random addresses again and repeats the process until the outdoor unit receives the response information output by all the indoor controllers, all the response information is correct, and the random addressing process is completed after the confirmation signal is output; the outdoor unit records the order of the indoor controllers generating the response information.
After delaying the first time period, the outdoor unit is preferably set to 5 seconds; the outdoor unit transmits the allocation addresses to each of the indoor controllers one by one in the order of receiving the response messages, and allocates new allocation addresses F102, F12F, F1a5 to the indoor controller B, the indoor controller a, and the indoor controller C, respectively, as shown in fig. 4. And after receiving all the fed back distribution address response information, the outdoor unit finishes the automatic addressing process, establishes connection between the outdoor unit and the indoor controller and communicates according to a new communication address.
As shown in fig. 5, the outdoor unit outputs the stored site setting parameters to the indoor controller communicating according to the new communication address, and the indoor controller feeds back the received signal and resumes the communication. All the indoor controllers in the working state start to work according to the field set parameters, and the multi-split air-conditioning system enters the normal running state.
By the mode, when a newly accessed indoor controller exists, or one indoor controller is disconnected or breaks down, the system can work according to the field setting parameters in normal operation, the operation setting of the newly accessed indoor controller cannot be changed, and the system can be ensured to operate stably.
As shown in fig. 6, a method for controlling a multi-split air conditioning system according to another embodiment of the present invention further includes the following steps when the multi-split air conditioning system is in a normal operation state or enters a normal operation state again:
judging whether the outdoor unit receives a reset signal; the reset signal can be generated by any indoor controller, such as by triggering a key arranged on the indoor controller or triggering a key on a human-computer interaction interface of the indoor controller to generate; for ease of understanding and description, the indoor controller that sends the reset signal is defined as the selected indoor controller.
If the outdoor unit receives the reset signal, the outdoor unit mainboard generates a set operation signal and outputs the set operation signal to each indoor controller in the working state, and each indoor controller in the working state is controlled to work according to the set operation parameters. It should be noted that the set operation parameters are preferably obtained by a professional according to different operation scenarios through experiments in advance and stored in a storage unit of the outdoor unit motherboard in advance, or the set operation parameters are selected from a storage unit in the indoor controller, and the set operation parameters may be default parameters when leaving a factory, or preset parameters which are formed after fine adjustment according to different specific use scenarios of a user and most match the current use scenario.
If the set operation parameters are stored in the storage unit of the outdoor unit mainboard, the outdoor unit calls the set operation parameters after receiving the reset signal, outputs the set operation parameters to each indoor controller in the working state, and further controls each indoor controller in the working state to work according to the set operation parameters. Alternatively, if the set operation parameters are stored in the selected indoor controller, as described in the previous step, each indoor controller may be used as the selected indoor controller, so that the set operation parameters are stored in each indoor controller. After the reset signal is generated, the selected indoor controller clears the EEPROM of the selected indoor controller and rewrites the set operation parameters. And the outdoor unit mainboard outputs the set operation signal to each indoor controller in a working state, and after receiving the set operation signal, other indoor controllers also clear the EEPROM of the other indoor controllers and rewrite the set operation parameters. Therefore, the field parameter synchronization of all controllers is realized, the outdoor unit can normally operate, and the stability of the whole system is ensured.
As shown in fig. 7, a method for controlling a multi-split air conditioning system according to another embodiment of the present invention further includes the following steps when the multi-split air conditioning system is in a normal operation state:
judging whether the indoor controller receives a demand control instruction or not; it should be noted that the demand control command is used to set a basic function of the indoor controller, such as a display setting of the indoor controller, or whether the indoor controller is allowed to implement a specific function; specifically, the demand control commands include, but are not limited to, allowable heating setting temperature compensation, allowable heating cycles, allowable compressor protection, allowable operating mode setting, allowable temperature setting, and indoor controller light setting.
And if the indoor controller receives the demand control command, responding to the demand control command. The demand control command is processed at one end of the indoor controller and is not transmitted to the outdoor unit, so that the response rate of the system can be improved, and the data processing capacity of the outdoor unit can be reduced. If all the non-demand control signals generated by the indoor controller, such as signals for controlling temperature and wind speed, are transmitted to the outdoor unit according to normal communication and control corresponding components to act, so that a control effect is achieved.
According to another embodiment disclosed herein, a multi-split air conditioning system, as shown in fig. 8, includes:
and the first judging unit is used for judging whether to generate an indoor controller working state change signal in the running state. The indoor controller working state change signal is generated when the indoor controller is converted from a non-working state to a working state, or is converted from the working state to the non-working state, or is converted from the working state to a fault state.
And the storage unit is used for storing the field setting parameters in the current running state when the indoor controller working state change signal is generated.
A first test unit to generate a broadcast test signal containing a random address. Wherein the random address is generated within a set address range; the set address range may be set in advance by a technician according to the model of the multi-split air conditioning system and the number of accessible indoor controllers in the multi-split air conditioning system and stored in a storage unit of the outdoor unit main board.
The device comprises an initialization unit, a test unit and a control unit, wherein the initialization unit is used for enabling each indoor controller in a starting-up state to randomly generate a test address. The test address is generated within the set address range.
A second determination unit for determining whether the test address is the same as a random address in a broadcast test signal.
A response unit that transmits response information when the test address is the same as a random address.
A third determination unit configured to determine whether the response information is correct. The first testing unit generates a broadcast test signal containing another random address again, and repeats the testing process until the broadcast test signal containing one random address can only receive one response signal from the indoor controller, that is, the third determining unit determines that the response information is correct, so as to avoid address collision.
A confirmation unit for outputting a confirmation signal when the response information is correct.
And the distribution unit is used for sending the distribution addresses to each indoor controller one by one according to the sequence of receiving the response information.
And the first setting unit is used for outputting the field setting parameters stored by the storage unit to the indoor controller which is assigned with the new address and is in the working state, and controlling the indoor controller to work according to the field setting parameters.
In the embodiment of the invention, when the working state of the indoor controller of the multi-split air-conditioning system changes according to the user requirement or the field requirement, the outdoor unit can automatically address the indoor controller and establish connection, and the field setting parameters in the current running state stored when the working state changes are output to the corresponding indoor controller; if the number of the indoor controllers in the working state is increased, the newly added indoor controllers can also operate according to the field set parameters, additional setting by a user is not needed, the stable operation of the whole multi-split air conditioning system can be ensured, the indoor terminals matched with the newly added indoor controllers can also be enabled to efficiently enter the stable working state, the field setting is kept consistent, and the using effect is good.
According to another embodiment disclosed by the present invention, a multi-split air conditioning system is disclosed, referring to fig. 9, on the basis of the technical solution disclosed by the above embodiment, the multi-split air conditioning system further includes:
a reset signal generation unit for generating a reset signal.
And the second setting unit is used for generating a setting operation signal and outputting the setting operation signal to each indoor controller in a working state after receiving the reset signal.
Through the reset signal generating unit and the second setting unit, when any one of the indoor controllers generates the reset signal, the second setting unit can enable each indoor controller in a working state to work according to the set operation parameters corresponding to the set operation signals through communication between the outdoor unit and the indoor controllers, all the field setting parameters are synchronously rewritten, so that the control efficiency of the whole system is improved, and the indoor controllers synchronously run according to the same working parameters.
According to another embodiment disclosed by the present invention, a multi-split air conditioning system is disclosed, referring to fig. 10, based on the technical solution disclosed by the above embodiment, further comprising at one indoor end:
an instruction determination unit that determines whether the received control instruction is a demand control signal;
and the demand control unit is used for executing a control instruction corresponding to the demand control signal on the indoor controller. The demand control signals include, but are not limited to, allowable heating setting temperature compensation, allowable heating cycles, allowable compressor protection, allowable operating mode setting, allowable temperature setting, indoor controller light setting, and the like.
And if the indoor controller receives the demand control command, responding to the demand control command. The demand control command is processed at one end of the indoor controller and is not transmitted to the outdoor unit, so that the response rate of the system can be improved, and the data processing capacity of the outdoor unit can be reduced.
Those skilled in the art will appreciate that all or part of the steps for implementing the above embodiments may be implemented by a program instructing associated hardware to perform the steps. The program may be stored in a computer readable medium. The computer readable medium may be a read-only memory, a magnetic or optical disk, or the like.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (9)
1. A control method of a multi-split air conditioning system is characterized by comprising the following steps:
the multi-split air conditioning system is in an operating state;
judging whether to generate a working state change signal of the indoor controller;
if the indoor controller working state change signal is generated, the outdoor unit stores the field setting parameters in the current running state; wherein the field setting parameters comprise a set water outlet temperature, a set wind speed or a set room temperature;
the outdoor unit outputs the field setting parameters to the indoor controller in the working state and controls the indoor controller in the working state to work according to the field setting parameters, and the outdoor unit comprises:
the outdoor unit generates a broadcast test signal containing a random address;
initializing the indoor controllers in a starting state, and randomly generating a test address by each indoor controller;
the indoor controller in a starting state receives a broadcast test signal which is generated by an outdoor unit and contains a random address, and judges whether the test address of the indoor controller is the same as the random address or not;
if the test address is the same as the random address, the indoor controller sends a response message to the outdoor unit;
after receiving the response information, the outdoor unit judges whether the response information is correct;
if the response information is correct, the outdoor unit outputs a confirmation signal;
the outdoor unit outputs broadcast test signals containing other random addresses again and repeats the process until the outdoor unit receives response information output by all the indoor controllers and outputs confirmation signals;
the outdoor unit sends an allocation address to each indoor controller;
the indoor controller feeds back the address allocation response information to the outdoor unit one by one after receiving the allocation address;
the outdoor unit is connected with the indoor controller;
and the outdoor unit outputs the stored field setting parameters to the indoor controller.
2. The multi-split air conditioning system control method as claimed in claim 1,
when the multi-split air conditioning system is in a normal operation state, the method further comprises the following steps:
judging whether the outdoor unit receives a reset signal generated by any one indoor controller;
and if the outdoor unit receives the reset signal, the outdoor unit generates a set operation signal and outputs the set operation signal to the indoor controller in the working state, and the indoor controller in the working state is controlled to work according to the set operation parameters.
3. The multi-split air conditioning system control method as claimed in claim 2,
when the multi-split air conditioning system is in a normal operation state, the method further comprises the following steps:
judging whether the indoor controller receives a demand control instruction or not;
and if the demand control instruction is received, the indoor controller responds to the demand control instruction.
4. The multi-split air conditioning system control method as claimed in claim 3, wherein:
the indoor controller working state change signal is generated under the following conditions: the indoor controller is converted into a working state from a non-working state, or is converted into a non-working state from a working state, or is converted into a fault state from a working state;
the demand control instructions include allowable heating setting temperature compensation, allowable heating circulation, allowable compressor protection, allowable operation mode setting, allowable temperature setting and/or indoor controller light setting.
5. The multi-split air conditioning system control method as claimed in claim 4, wherein if the response information is incorrect, the outdoor unit regenerates the broadcast test signal including another random address.
6. The multi-split air conditioning system control method as claimed in claim 5, wherein determining whether the response information is correct includes:
judging whether the outdoor unit receives two or more response messages;
if the outdoor unit receives a response message, the response message is judged to be correct;
if the outdoor unit receives two or more response messages, it is determined that the response messages are incorrect.
7. A multi-split air conditioning system, comprising:
a first determination unit for determining whether to generate an indoor controller operation state change signal in an operation state;
the storage unit is used for storing the field setting parameters in the current running state when the working state change signal of the indoor controller is generated; and
a first setting unit for outputting the field setting parameters stored by the storage unit to an indoor controller in an operating state, the first setting unit being configured to perform the steps of:
configuring an outdoor unit to generate a broadcast test signal containing a random address;
configuring indoor controllers in a starting state for initialization, and randomly generating a test address by each indoor controller;
configuring an indoor controller in a starting state to receive a broadcast test signal which is generated by an outdoor unit and contains a random address, and judging whether the test address of the indoor controller is the same as the random address or not;
if the test address is the same as the random address, configuring the indoor controller to send a response message to the outdoor unit;
after the configuration outdoor unit receives the response information, judging whether the response information is correct;
if the response information is correct, configuring the outdoor unit to output a confirmation signal;
configuring the outdoor unit to output the broadcast test signals containing other random addresses again and repeating the process until the outdoor unit receives response information output by all the indoor controllers and outputs confirmation signals;
configuring an outdoor unit to send an allocation address to each indoor controller;
configuring an indoor controller to feed back allocation address response information to the outdoor unit one by one after receiving the allocation address;
configuring an outdoor unit and an indoor controller to establish connection;
and the configuration outdoor unit outputs the stored field setting parameters to the indoor controller.
8. The multi-split air conditioning system as claimed in claim 7, further comprising:
a reset signal generation unit for generating a reset signal; and
and the second setting unit is used for generating a set operation signal and outputting the set operation signal to the indoor controller in the working state after receiving the reset signal.
9. The multi-split air conditioning system as claimed in claim 8, further comprising:
an instruction determination unit for determining whether the received control instruction is a demand control signal; and
and the demand control unit is used for executing a control instruction corresponding to the demand control signal on the indoor controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910502735.7A CN110160204B (en) | 2019-06-11 | 2019-06-11 | Multi-split air conditioning system control method and multi-split air conditioning system |
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| CN112378060A (en) * | 2020-11-02 | 2021-02-19 | 佛山市顺德区美的电子科技有限公司 | Outdoor unit, indoor unit, multi-split system and pairing method of humidifier of multi-split system |
| CN113513793A (en) * | 2021-04-12 | 2021-10-19 | 格力电器（合肥）有限公司 | Control system and control method of multi-connected heat pump unit and multi-connected heat pump unit |
| CN113587393B (en) * | 2021-08-05 | 2022-11-29 | 青岛海信日立空调系统有限公司 | Central air-conditioning control system |
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