CN112611016B - Multi-split multi-split outdoor unit communication method and multi-split unit - Google Patents

Multi-split multi-split outdoor unit communication method and multi-split unit Download PDF

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CN112611016B
CN112611016B CN202011321293.5A CN202011321293A CN112611016B CN 112611016 B CN112611016 B CN 112611016B CN 202011321293 A CN202011321293 A CN 202011321293A CN 112611016 B CN112611016 B CN 112611016B
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communication
level
task
error rate
internal
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CN112611016A (en
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禚百田
时斌
程绍江
张锐钢
王军
高玉辉
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Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
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Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
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Priority to PCT/CN2021/101825 priority patent/WO2022068278A1/en
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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
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
    • 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
    • F24F11/32—Responding to malfunctions or emergencies
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • 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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/88—Electrical aspects, e.g. circuits

Abstract

The invention relates to the technical field of air conditioners, and particularly provides an outdoor unit communication method of a multi-split air conditioner and the multi-split air conditioner, aiming at solving the problems of low communication speed and poor quality of the conventional indoor unit and the conventional outdoor unit. The method comprises the following steps: determining the average communication error rate and the maximum communication error rate of the internal unit; comparing the average communication error rate with an average communication error rate threshold value, and comparing the magnitude relation between the maximum communication error rate and the maximum communication error rate threshold value; determining the grade of the internal task according to the comparison result; and selectively executing a first communication strategy according to the level, or hierarchically disassembling the zero-level task into a plurality of subtasks to form a new internal task and then executing a second communication strategy, or executing a third communication strategy. The method disassembles the internal tasks of higher levels hierarchically, increases the running times of the internal and external communication tasks in one communication period, accelerates the communication speed of the external machine, and improves the communication speed of the external machine, so that the communication speed between the internal machine and the external machine can be indirectly accelerated, and the communication quality of the external machine is improved.

Description

Multi-split multi-split outdoor unit communication method and multi-split unit
Technical Field
The invention belongs to the technical field of air conditioners, and particularly provides an outdoor unit communication method of a multi-split air conditioner and the multi-split air conditioner.
Background
According to different numbers of the internal and external machines, the multi-split air conditioner is divided into two types of one-split-multi type and multi-split-multi type, wherein the one-split-multi type means that one external machine and a plurality of internal machines which are arranged in parallel work in a matched mode, and the multi-split-multi type means that a plurality of external machines which are arranged in parallel work in a matched mode and a plurality of internal machines which are arranged in parallel work in a matched mode. Whether the multi-split air conditioner is a multi-split air conditioner or a multi-split air conditioner, an external unit is usually selected as a master control external unit, the master control external unit is in communication connection with each internal unit and each external unit, and the same or different communication protocols are used for communication interaction to transmit control instructions or data.
The number of the inner machines of the multi-split air conditioner is large, the larger the number of the main control outer machine connected with the inner machines is, the larger the communication data volume is, the slower the execution speed of various processing tasks in a program is, the real-time communication tasks are influenced, and misjudgment caused by errors such as the time sequence of communication receiving and sending data is easy to occur. In addition, the larger the number of internal units, the more interference is introduced, which further degrades the reliability of communication quality.
At present, the communication quality and speed between the master control external unit and the internal unit are improved by improving a hardware design method, such as using a communication chip with strong interference resistance and higher speed, a program main chip, and the like.
However, various chips with high anti-interference performance and higher speed are replaced, so that hardware design cost is increased, and on the other hand, software is synchronously adjusted according to different hardware, so that the problem that different hardware cannot be compatible to be used in the same system is possibly caused.
In view of this, those skilled in the art need to find a new way to solve the problems of slow communication speed and poor quality between the main control outdoor unit and the internal unit of the conventional multi-split air conditioner.
Disclosure of Invention
In order to solve the problems of low communication speed and poor quality between a master control outdoor unit and an indoor unit of the conventional multi-split air conditioner, the invention provides a multi-split air conditioner communication method on the one hand.
An outdoor unit communication method of a multi-split air conditioner, wherein the multi-split air conditioner comprises an external communication task and an internal task, the external communication task is a communication task between a main control outdoor unit and an outdoor unit of the multi-split air conditioner, the internal task is a task processed by the outdoor unit, and the internal task at least comprises a zero-order task, and the outdoor unit communication method comprises the following steps: s1, determining average communication error rate r of indoor unit of multi-split air conditioner avg And a maximum communication error rate r max (ii) a S2, comparing the average communication error rate r avg And an average communication error rate threshold value, and the maximum communication error rate r max And a maximum communication error rate threshold; s3, according to the average communication error rate r avg And the maximum communication error rate r max Determining a level of the internal task; and S4, selectively executing the first communication strategy according to the grade of the internal task, or hierarchically disassembling the zero-level task into a plurality of subtasks to form a new internal task and then executing a second communication strategy, or executing a third communication strategy.
In a preferable embodiment of the above-mentioned outdoor unit communication method, the average communication error rate threshold includes a first average communication error rate threshold r avgs1 The maximum communication error rate threshold value comprises a first maximum communication error rate threshold value r maxs1 And a second maximum communication error rate threshold r maxs2 And r is maxs1 <r maxs2 (ii) a When the comparison result of the step S2 is r avg <r avgs1 And r is max <r maxs1 When the step S3 determines the internal task or the likeThe level is level 0, and the step S4 executes the first communication policy, where the first communication policy refers to running at least one round of program in one communication cycle, and each round of program includes one external communication task and all the zero-level tasks; when the comparison result of the step S2 is r avg <r avgs1 And r is maxs1 ≤r max <r maxs2 If so, the step S3 determines that the level of the internal task is level 1, and the step S4 executes the second communication policy; when the comparison result of the step S2 is r avg <r avgs1 And r is max ≥r maxs2 If yes, the step S3 determines that the level of the internal task is level 2, and the step S4 executes the second communication policy.
In a preferable embodiment of the above-mentioned outdoor unit communication method, the average communication error rate threshold includes a first average communication error rate threshold r avgs1 And a second mean communication error rate threshold r avgs2 And r is avgs1 <r avgs2 The maximum communication error rate threshold value comprises a first maximum communication error rate threshold value r maxs1 (ii) a When the comparison result of the step S2 is: r is a radical of hydrogen avgs1 ≤r avg <r avgs2 And r is max <r maxs1 If yes, the step S3 determines that the level of the internal task is level 1, and the step S4 executes the second communication policy; when the comparison result of the step S2 is: r is avg ≥r avgs2 And r is max <r maxs1 If yes, the step S3 determines that the level of the internal task is level 2, and the step S4 executes the second communication policy;
in an optimized scheme of the communication method of the outdoor unit, the maximum communication error rate threshold further includes a second communication error rate threshold r maxs2 And r is maxs1 <r maxs2 (ii) a When the comparison result of the step S2 is: r is a radical of hydrogen avgs1 ≤r avg <r avgs2 And r is maxs1 ≤r max <r maxs2 If so, the step S3 determines that the level of the internal task is level 2, and the step S4 executes the second communication policy; when saidThe comparison result of step S2 is r avgs1 ≤r avg <r avgs2 And r is max ≥r maxs2 If so, the step S3 determines that the level of the internal task is level 3, and the step S4 executes the second communication policy; when the comparison result of the step S2 is: r is avg ≥r avgs2 And r is maxs1 ≤r max <r maxs2 If so, the step S3 determines that the level of the internal task is level 3, and the step S4 executes the second communication policy; when the comparison result of the step S2 is: r is a radical of hydrogen avg ≥r avgs2 And r is max ≥r maxs2 If yes, the step S3 determines that the level of the internal task is level 4, and the step S4 executes a third communication policy, where the third communication policy refers to running at least one round of program in one communication cycle, and each round of program includes a plurality of external communication tasks and the zero-level task.
In a preferable embodiment of the above-mentioned external unit communication method, when the level of the internal task is determined to be level 1 in step S3, step S4 includes the following steps: at least one zero-level task is disassembled into a plurality of first-level subtasks; forming a new internal task by the first-level subtask and the zero-level task which is not disassembled; executing a second communication policy; the second communication strategy refers to running multiple rounds of programs in one communication cycle, wherein each round of programs comprises an external communication task, the first-level subtask and the zero-level task which is not disassembled.
In a preferable embodiment of the above-mentioned outdoor unit communication method, when the level of the internal task is determined to be level 2 in step S3, step S4 includes the following steps: at least one zero-level task is disassembled into a plurality of first-level subtasks, and at least one first-level subtask is continuously disassembled into a plurality of second-level subtasks; and forming the second-level subtask, the first-level subtask which is not disassembled and the zero-level task which is not disassembled into a new internal task: executing the second communication policy; the second communication strategy refers to running multiple rounds of programs in one communication period, wherein each round of programs comprises an external communication task, a sub task of the zero-level task which is disassembled and the zero-level task which is not disassembled.
In a preferable embodiment of the above-mentioned external unit communication method, when the level of the internal task is determined to be 3 in step S3, step S4 includes the following steps: at least one zero-level task is disassembled into a plurality of first-level subtasks, at least one first-level subtask is continuously disassembled into a plurality of second-level subtasks, and at least one second-level subtask is continuously disassembled into a plurality of third-level subtasks; and forming the third-level subtask, the zero-level task which is not disassembled, the first-level subtask which is not disassembled and the second-level subtask which is not disassembled into a new internal task: executing the second communication policy; the second communication strategy refers to running multiple rounds of programs in one communication period, wherein each round of programs comprises an external communication task, a sub task of the zero-level task which is disassembled and the zero-level task which is not disassembled.
In a preferable embodiment of the outdoor unit communication method, after the step S4, the outdoor unit communication method further includes the steps of: and S5, returning to the step S1 after the preset time of the current communication strategy operation is kept.
In a preferable embodiment of the outdoor unit communication method, the step S5 is to return to the step S1 after the current communication policy is kept running for 5 minutes
The invention relates to an outdoor unit communication method of a multi-split online, which comprises an external communication task and an internal task, wherein the external communication task refers to a communication task between a main control outdoor unit and an outdoor unit of the multi-split online, the internal task refers to a task processed by the outdoor unit, and the internal task at least comprises a zero-order task, and the communication method of the outdoor unit is characterized by comprising the following steps of: s1, determining the average communication error rate r of the indoor unit of the multi-split air conditioner avg And a maximum communication error rate r max (ii) a S2, comparing the average communication error rate r avg And an average communication error rate threshold value, and the maximum communication error rate r max And a maximum communication error rate threshold; s3, according to the average communication error rate r avg And said maximum communication errorCode rate r max Determining a level of the internal task; and S4, selectively executing a first communication strategy according to the grade of the internal task, or hierarchically disassembling the zero-grade task into a plurality of subtasks to form a new internal task and then executing a second communication strategy, or executing a third communication strategy.
The multi-split online outdoor unit communication method compares the average communication error rate r of the indoor units respectively avg And a maximum communication error rate r max The communication quality of the external machine is improved by determining the level of the internal task of the external machine according to the comparison result and the level of the internal task of the external machine, and then selecting and executing different communication strategies of the external machine according to different levels, wherein the level of the internal task is positively correlated with the average communication error rate and the maximum communication error rate of the internal machine, and then hierarchically disassembling the internal task with higher level to form a plurality of sub-tasks, so that the running times of the external communication task in one communication period are increased, the communication speed of the external machine between the master control external machine and the external machine is increased, and the communication speed between the internal machine and the external machine can be indirectly increased due to the higher communication speed of the external machine.
On the other hand, the invention also provides a multi-split air conditioner, which comprises a main control outdoor unit and a plurality of sub outdoor units, wherein the main control outdoor unit and the sub outdoor units are in communication connection through the outdoor unit communication method.
It should be noted that the multi-split air conditioner of the present invention has all the technical effects of the above-mentioned external unit communication method, and those skilled in the art can clearly understand from the foregoing description, so that no further description is provided herein.
Drawings
Fig. 1 is a flowchart illustrating major steps of an outdoor unit communication method of a multi-split air conditioner according to the present invention;
fig. 2 is a flowchart illustrating detailed steps of an exemplary embodiment of an external unit communication method of a multi-split air conditioner;
fig. 3 is a flowchart illustrating detailed steps of an external unit communication method of the multi-split air conditioner according to another embodiment of the present invention.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
In the description of the present application, 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.
As is well known, multi-split air conditioners are classified into one-split multi-split air conditioners and multiple-split multi-split air conditioners according to the number of external units. The multi-split air conditioner comprises a master control outdoor unit and a plurality of indoor units which are arranged in parallel, the multi-split air conditioner comprises a plurality of outdoor units which are connected in parallel and a plurality of indoor units which are connected in parallel, one outdoor unit is selected as the master control outdoor unit, and in order to distinguish and express concisely, other outdoor units except the master control outdoor unit are called as sub-outdoor units. The master control outdoor unit is in communication connection with the indoor unit and the outdoor unit no matter one-to-many or multi-to-many online, the two units are interacted through the same or different communication protocols, and control instructions or data are transmitted between the two units. The communication speed and quality between the master control outer unit and the master control outer unit can also affect the communication speed and quality between the master control outer unit and the master control inner unit, and especially when the number of the outer units is large, the communication between the master control outer unit and the outer units can slow down the communication speed between the master control outer unit and the inner units, and the communication quality between the master control outer unit and the inner units is reduced. The conventional method of communicating between the master external unit and the slave external unit will be described in detail below.
The communication tasks between the master outdoor unit and the sub-outdoor units of the multi-split air conditioner generally include external communication tasks and internal tasks. The external communication task refers to a communication task between the master control external unit and the sub-external unit, for example: the master control outdoor unit and the outdoor unit are used for realizing some function combinations executed for mutual communication, such as a data receiving function, a data sending function, a communication state conversion function and the like. The internal task is irrelevant to communication, does not need to communicate with the outside, and is only some function functions processed by the external unit, such as: fault alarm processing, nixie tube display, key operation, dial selection, wind speed adjustment, operation mode judgment, sensor detection and the like.
For convenience of understanding, the following description explains, for example, a communication method between a master outdoor unit and an outdoor unit of a multi-split air conditioner: for example, the external communication task is I, the internal task includes three level-zero tasks, which respectively include a, B, and C, a program is run between the master-control outdoor unit and the sub-outdoor unit according to a first communication strategy, the first communication strategy is to run at least one round of programs in one communication cycle, and each round of programs includes one external communication task I and all level-zero tasks. The communication cycle refers to the time for the external communication task and the internal task to complete at least one round of communication, and the zero-level task refers to the internal task before disassembly processing. For example, the first communication policy is to run the programs in the following order: I-A-B-C-I-A-B-C \8230;.
As described above, the larger the number of the multi-split outdoor units, the slower the communication speed between the main control outdoor unit and the indoor unit to a certain extent, and the lower the communication quality between them.
Referring to fig. 1, the outdoor unit communication method of the multi-split air conditioner of the present invention mainly includes the following steps:
s1, determining average communication error rate r of indoor unit of multi-split air conditioner avg And maximum communication error rate r max 。
In the communication between the internal unit and the external unit of the multi-split air conditioner, the master control external unit is used as a main sender, the internal unit receives correct data of the master control external unit and then responds, and otherwise, the internal unit does not respond. The main control outer machine receives the correct response data of the inner machine and then replies a receiving OK signal to the inner machine, and the inner machine stops sending response after receiving the signal. If the OK signal replied by the main control external unit is not received, the internal unit will continuously send response until the maximum sending times is reached.
The internal cause and the external cause are caused when the internal unit continuously sends the response but does not receive the OK signal returned by the master external unit, and the internal cause is mainly the excessive internal tasks of the internal unit, and the detailed description is not given here. The external reason is that the communication between the master control external machine and the sub-external machine generates interference on a communication bus of the master control external machine, and although the program sends and receives data according to a normal time sequence, the bus data is wrong due to the interference, and the internal machine cannot receive correct data of the master control external machine and does not respond. Or the internal machine responds after receiving the correct data of the main control external machine, but the main control external machine cannot receive the correct response data of the internal machine and cannot reply to receive an OK signal, so that the internal machine tries to send for many times. Such as: and limiting the maximum sending times of the internal unit to be 100 times, and giving up the data sending opportunity when the main control external unit still cannot normally receive the data of the internal unit in the 100 times. However, the 100 times of invalid communication occupies communication resources, and the quality and the speed of communication between the internal machine and the external machine are greatly reduced. At present, the communication quality and speed between the master control external unit and the internal unit are measured by the index of the communication error rate.
S2, comparing the average communication error rate r avg And average communication error rate threshold, and maximum communication error rate r max And a maximum communication error rate threshold;
s3, according to the average communication error rate r avg And maximum communication error rate r max Determining the grade of the internal task of the sub-outdoor unit according to the comparison result;
and S4, selectively executing a first communication strategy according to the level of the internal task, or hierarchically disassembling the zero-level task into a plurality of subtasks to form a new internal task and then executing a second communication strategy, or executing a third communication strategy.
The multi-split outdoor unit communication method compares the average communication error rate r of the indoor units respectively avg And maximum communication error rate r max The levels of the internal tasks of the outdoor unit and the outdoor unit are determined according to the comparison result, then different communication strategies of the outdoor unit and the outdoor unit are selected and executed according to different levels, the level of the internal task is positively correlated with the average communication error rate and the maximum communication error rate of the indoor unit, and the internal tasks with higher levels are disassembled in a layered mode to form a plurality of internal tasksAnd the subtask increases the running times of the external communication tasks in one communication period, accelerates the external machine communication speed between the master control external machine and the external subtask, and improves the communication speed between the internal machine and the external machine indirectly by improving the communication speed of the external machine, thereby improving the communication quality of the external machine.
For better understanding, the multi-split outdoor unit communication method of the present invention is described in detail in two embodiments in conjunction with fig. 2 and 3. Fig. 2 is a flowchart illustrating detailed steps of a first embodiment of a communication method for an external unit with multi-drop and multi-split air conditioners according to the present invention, and fig. 3 is a flowchart illustrating detailed steps of a second embodiment of the communication method for the external unit with multi-drop and multi-split air conditioners according to the present invention.
The first embodiment is as follows:
in this embodiment, it is assumed that the communication task between the master external unit and the sub-external unit of the multi-split air conditioner includes an external communication task I and an internal task, and the internal task includes a zero-level task a.
The multi-split communication method for the internal machine and the external machine comprises the following steps:
s1, determining average communication error rate r of indoor unit of multi-split air conditioner avg And maximum communication error rate r max . The determination method specifically comprises the following steps:
s10, acquiring the total communication times A and successful communication times a between the master control outdoor unit and the internal unit in one communication period.
The total communication times A refer to the total times sent by the master control external unit to an internal unit, and the successful communication times a refer to the times that the master control external unit can correctly receive and reply an OK signal after the internal unit normally responds once.
S11, calculating the communication error rate r of the internal unit according to the following formula:
Figure GDA0003839128310000081
for example: assuming that the total communication times between the master control outdoor unit and one indoor unit is 80 times, the successful communication times is 76 times, and other conditions are that the indoor unit does not transmit or transmits for multiple times, the communication error rate of the indoor unit is:
Figure GDA0003839128310000082
s12, calculating the average communication error rate r of the internal unit according to the following formula avg ：
Figure GDA0003839128310000083
Wherein n represents the total number of internal machines, r i Representing the communication error rate of the ith station.
S13, comparing the magnitude relation of the communication error rates r of the n internal units to obtain the maximum communication error rate r max 。
In step S1, the average communication error rate r of the internal unit is determined avg And a maximum communication error rate r max Then, the step S2 is entered to compare the average communication error rate r avg And average communication error rate threshold value, and maximum communication error rate r max And a maximum communication error rate threshold.
In this embodiment, two average communication error rate thresholds, i.e. a first average communication error rate threshold r, are set avgs1 And a second mean communication error rate threshold r avgs2 And r is avgs1 <r avgs2 . Also, the present embodiment sets two maximum communication error rate thresholds, i.e., the first maximum communication error rate threshold r maxs1 And a second maximum communication error rate threshold r maxs2 And r is maxs1 <r maxs2 . It should be noted that, the specific numbers of the average communication error rate threshold and the maximum communication error rate threshold may be adjusted by those skilled in the art according to actual needs.
In addition, the specific values of the average communication error rate threshold and the maximum communication error rate threshold depend on the installation and operation environment of the multi-split air conditioner, and the like, and those skilled in the art set the values according to actual situations, in this embodiment, the first average communication error rate threshold r avgs1 5%, second average communication error rate threshold r avgs2 10%, the first maximum communication error rate threshold r maxs1 15%, second maximum communication error rate threshold r maxs2 The content was 20%.
Step S2 in this embodiment specifically includes the following steps:
s20, judging the average communication error rate r avg Whether or not it is smaller than the first average communication error rate r avgs1 If yes, executing step S21, otherwise, executing step S23;
s21, judging the maximum communication error rate r max Whether it is less than the first maximum communication error rate threshold r maxs1 If yes, executing step S30 to determine the grade of the internal task to be 0 grade, otherwise executing step S22;
s22, judging the maximum communication error rate r max Whether it is less than the second maximum communication error rate threshold value r maxs2 If yes, step S31 is executed to determine that the level of the internal task is level 1, otherwise step S32 is executed to determine that the level of the internal task is level 2.
When the judgment result of the step S20 is the average communication error rate r avg Not less than the first average communication error rate r avgs1 I.e. r avg ≥r avgs1 Then, step S23 is executed.
S23, judging the average communication error rate r avg Whether it is less than the first average communication error rate threshold r avgs1 If (i.e. r) avgs1 ≤r avg <r avgs2 ) Step S24 is performed, NO (i.e., r) avg ≥r avgs2 ) Step S26 is executed.
S24, judging the maximum communication error rate r max Whether it is less than the first maximum communication error rate threshold r maxs1 If (i.e. r) max <r maxs1 ) Step S31 is performed to determine that the level of the internal task is level 1, no (i.e., r) max ≥r maxs1 ) Step S22 is executed.
S25, judging the maximum communication error rate r max Whether it is less than the second maximum communication error rate threshold r maxs2 If is (r) maxs1 ≤r max <r maxs2 ) Step S32 is performed to determine that the level of the internal task is level 2, no (r) max ≥r maxs2 ) Step S33 is performed to determine the level of the internal task to be level 3.
As described above, when the judgment result in step S23 is the average communication error rate r avg Not less than the first average communication error rate r avgs2 I.e. r avg ≥r avgs2 Then, step S26 is executed.
S26, judging the maximum communication error rate r max Whether it is less than the first maximum communication error rate threshold r maxs1 If (i.e. r) max <r maxs1 ) Step S32 is performed to determine that the level of the internal task is level 2, no (i.e., r) max ≥r maxs1 ) Step S27 is executed.
S27, judging the maximum communication error rate r max Whether it is less than the second maximum communication error rate threshold r maxs2 If (i.e. r) maxs1 ≤r max <r maxs2 ) Step S33 is performed to determine that the level of the internal task is level 3, no (i.e., r) max ≥r maxs2 ) Step S34 is performed to determine that the level of the internal task is level 4.
And when the level of the internal task is determined in the step S3, executing a step S4, and selectively executing a first communication strategy according to the level of the internal task, or hierarchically disassembling the zero-level task into a plurality of subtasks to form a new internal task and then executing a second communication strategy, or executing a third communication strategy.
In this embodiment, when the level of the internal task is 0 level, step S4 specifically includes the following steps:
and S40, executing a first communication strategy. The first communication strategy refers to executing at least one round of programs in one communication cycle, wherein each round of programs comprises one external communication task and all zero-level tasks. For example: the first communication strategy is to run the program in the following order: I-A-I-A \8230, 8230and its preparation process.
When the level of the internal task is level 1, the step S4 specifically includes the following steps:
s41, disassembling the zero-level task A into a plurality of first-level subtasks;
s42, forming a plurality of primary subtasks into a new internal task;
and S43, using a second communication strategy, wherein the second communication strategy refers to running multiple rounds of programs in one communication period, and each round of program comprises an external communication task and a primary subtask.
For example, suppose that the internal task a is split into two primary sub-tasks A1 and A2 in step S41, and A1 and A2 are identified as new internal tasks in step S42, and then the program is run in the order of I-A1-I-A2-I-A1 \8230;, according to the second communication policy.
When the level of the internal task is level 2, the step S4 specifically includes the following steps:
s44, resolving the zero-level task A into a plurality of first-level subtasks, and continuing to resolve at least one first-level subtask into a plurality of second-level subtasks;
and S45, forming the second-level subtasks and the non-disassembled first-level subtasks into new internal tasks and then executing the step S43, namely using a second communication strategy, wherein the second communication strategy comprises running multiple programs in one communication period, and each program comprises an external communication task and one first-level subtask or one second-level subtask of the disassembled zero-level task.
For example, assume that the internal task a is split into two primary subtasks A1 and A2 in step S321, the primary subtask A1 is split into two secondary subtasks a11 and a12, then the internal tasks a11, a12, and A2 are identified as second new internal tasks in step S322, and finally the program is run in the sequence of I-a11-I-A2-I-a12-I-a11-I-A2-I-a12 \8230 \ 8230according to the second communication strategy.
When the level of the internal task is level 3, the step S4 specifically includes the following steps:
s46, resolving the zero-level task A into a plurality of first-level subtasks, resolving at least one first-level subtask into a plurality of second-level subtasks, and continuing resolving at least one second-level subtask into a plurality of third-level subtasks;
and S47, forming the third-level subtasks, the first-level subtasks which are not disassembled and the second-level subtasks which are not disassembled into new internal tasks, and then executing the step S43, namely executing a second communication strategy, wherein the second communication strategy comprises running a plurality of programs in a communication period, and each program comprises one first-level subtask, one second-level subtask or one third-level subtask of one external communication task and the zero-level tasks which are disassembled.
For example, assume that the internal task a is disassembled into two first-level subtasks A1 and A2 in step S46, the first-level subtask A1 is further disassembled into two second-level subtasks a11 and a12, the second-level subtask a11 is continuously disassembled into two third-level subtasks a111 and a112, then the internal tasks a111, a112, a12, and A2 are determined as new internal tasks in step S47, and finally the program is run in the order of \8230 \ 8230;, according to the second communication strategy, I-a111-I-A2-I-a12-I-a112-I-a 111-I-A2.
It should be noted that the number of task splitting layers is related to the function of program implementation, and as the splitting is finer, the time consumption of each subtask operation is shorter, but the program design implementation is more complex, so that in order to balance between increasing the communication speed and reducing the program design difficulty, so as to make the communication cost between the main control external unit and the sub external unit within a controllable range, in this embodiment, when the level of the internal task is determined to be 4 levels, a new internal task is not formed in a layered splitting manner, but the step S37 is directly executed.
And S37, executing third trust service. The third communication service comprises at least one round of program running in one communication period, wherein each round of program comprises a plurality of external communication tasks and all zero-level tasks.
For example, if r ≧ r set4 The program is executed in the sequence of I-I- \8230; -I-A-I-I- \8230; -I-A \8230;.
In addition, the method for the communication of the external unit limits the highest level of the internal task to be 4 levels, and directly increases the running times of the external communication task in the normal communication strategy when the level of the internal task is determined to be 4 levels, so that the purposes of accelerating the communication speed of the internal unit and the external unit and improving the communication quality are achieved, the problem of overlarge difficulty in program design caused by too many levels of disassembly is avoided, and a balance is achieved among the acceleration of the communication speed, the improvement of the communication quality and the control cost.
With reference to fig. 2, after step S4, the method for communicating an external unit with multiple indoor units and multiple outdoor units according to this embodiment further includes the following steps:
and S5, returning to the step S10 after the current communication strategy runs for a preset time.
In actual operation, due to the difference between the installation environment and the model of the outdoor unit, the error rate of each indoor unit may be different, so that the levels of the internal tasks are different, and after the step S5 is added, the communication method of the outdoor unit can dynamically adjust the levels of the internal tasks of the outdoor unit, so as to better adapt to the use and installation conditions of the multi-split air-conditioning system. In this embodiment, the step S10 is returned after the current communication policy is run for 5 minutes, and of course, a person skilled in the art may set the value according to actual requirements.
Example two:
compared with the first embodiment, the second embodiment has a difference in that the number of the zero-level tasks in the internal tasks is increased, so that the specific content of step S4 is different from that of step S4 in the first embodiment, and the content of the remaining steps is completely the same as that of the first embodiment, and therefore, in order to keep the text concise, only the difference will be described in detail with reference to fig. 3, and the same points will not be described again. For the sake of convenience of distinction, step S4 corresponding to step S4 in example one is denoted by S4' in example two.
The internal tasks in this embodiment include a plurality of zero-level tasks, which may specifically be a first zero-level task a, a second zero-level task B, and a third zero-level task C, for example: the first zero-level task a is detected by a sensor, the second zero-level task B is adjusted by wind speed, and the third zero-level task C is determined by an operation mode, it should be noted that the three zero-level tasks are listed here only for convenience of description, and the like.
In this embodiment, when the level of the internal task is 0 level, step S4' specifically includes the following steps:
s40', executing a first communication strategy. The first communication strategy refers to executing at least one round of programs in one communication cycle, wherein each round of programs comprises one external communication task and all zero-level tasks. For example, in this embodiment, the first communication policy operation sequence is: I-A-B-C-I-A-B-C \8230;.
When the level of the internal task is level 1, the step S4' specifically includes the following steps:
s41', at least one zero-level task of the internal tasks is disassembled into a plurality of first-level subtasks;
s42', a plurality of first-level subtasks and the zero-level task which is not disassembled form a new internal task;
s43', a second communication strategy is used, wherein the second communication strategy refers to that multiple rounds of programs are operated in one communication cycle, and each round of programs comprises an external communication task, an unresolved zero-level task and a first-level subtask of the unresolved zero-level task.
For example, assuming that the first level zero task a is disassembled into two first-level subtasks A1 and A2 in step S311, and the second level zero task B is disassembled into three first-level subtasks B1, B2, and B3, the first-level subtasks A1, A2, B1, B2, and B3 and the third level zero task C, which is not disassembled, are identified as a first new internal task in step S312, and then the procedure is executed in the following order according to the second communication strategy:
I—A1—B1—C
—I—A2—B2—C
—I—A1—B3—C…。
when the level of the internal task is level 2, the step S4' specifically includes the following steps:
s44', at least disassembling one zero-level task into a plurality of first-level subtasks, and then at least disassembling one first-level subtask into a plurality of second-level subtasks;
and S45', forming the second-level subtask, the first-level subtask which is not disassembled and the zero-level task into a new internal task, and then executing the step S43', namely executing a second communication task which comprises a plurality of programs operated in a communication period, wherein each program comprises an external communication task, the first-level subtask which is not disassembled and the zero-level task which is disassembled or a second-level subtask.
For example, suppose that the internal task a is disassembled into two first-level subtasks A1 and A2 in step S321', the second zero-level task B is disassembled into three first-level subtasks B1, B2, and B3, the second-level subtask A1 is disassembled into three second-level subtasks a11, a12, and a13, the first-level subtask B2 is disassembled into two second-level subtasks B21 and B22, then a11, a12, a13, A2, B1, B21, B22, B3, and C are recognized as second new internal tasks in step S322, and finally the program is executed in the following order according to the second communication policy:
I—A11—B1—C
—I—A2—B21—C
—I—A12—B3—C
—I—A2—B1—C
—I—A13—B22—C
—I—A2—B3—C
…。
when the level of the internal task is level 3, the step S4' specifically includes the following steps:
s46', at least disassembling one zero-level task into a plurality of first-level subtasks, then at least disassembling one first-level subtask into a plurality of second-level subtasks, and continuously disassembling at least one second-level subtask into a plurality of third-level subtasks;
and S47', forming a third new internal task by the third-level subtask, the non-disassembled zero-level task, the first-level subtask and the second-level subtask, and then executing the step S43', namely, executing a plurality of programs in a communication cycle, wherein each program comprises an external communication task, the non-disassembled zero-level task and one first-level subtask, one second-level subtask or one third-level subtask of the disassembled zero-level task.
For example, suppose that the first level-zero task a is disassembled into two first-level subtasks A1 and A2, the second level-zero task B is disassembled into three first-level subtasks B1, B2 and B3, the first-level subtask A1 is further disassembled into three second-level subtasks a11, a12 and a13, the first-level subtask B2 is disassembled into two second-level subtasks B21 and B22, the second-level subtask a11 is continuously disassembled into two third-level subtasks a111 and a112, then a111, a112, a113, a12, a13, A2, B1, B21, B22, B3 and C are considered as second new internal tasks in step S47', and finally the program is run according to the second communication strategy in the following order:
I—A111—B1—C
—I—A2—B21—C
—I—A12—B3—C
—I—A112—B1—C
—I—A2—B1—C
—I—A13—B22—C
—I—A2—B3—C
…。
when the level of the internal task is level 4, the step S4' specifically includes the following steps:
and S48', executing a third communication strategy. The third communication strategy includes running at least one round of programs in one communication cycle, each round of programs including a plurality of external communication tasks and all level zero tasks.
For example, the program is run in the following order according to the third communication policy: I-I- \ 8230; \ 8230; -I-A-B-C-I-I- \ 8230; -I-A-B-C \8230;.
In addition to the outdoor unit communication method, the invention also provides a multi-split air conditioner which comprises a main control outdoor unit and a plurality of outdoor units, wherein the main control outdoor unit and the plurality of outdoor units are in communication connection through the outdoor unit communication method. It should be noted that the basic functional components and the operation principle of the multi-split air-conditioning system are basically the same as those in the prior art, and those skilled in the art can completely implement the multi-split air-conditioning system based on the prior art, so that the detailed description thereof is omitted.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is apparent to those skilled in the art that the scope of the present invention is not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.

Claims (10)

1. An outdoor unit communication method of a multi-split online system, wherein the multi-split online system comprises an external communication task and an internal task, the external communication task refers to a communication task between a main control outdoor unit and an outdoor unit of the multi-split online system, the internal task refers to a task processed by the outdoor unit, and the internal task at least comprises a zero-order task, and the outdoor unit communication method comprises the following steps:
s1, determining average communication error rate r of indoor unit of multi-split air conditioner avg And a maximum communication error rate r max ；
S2, comparing the average communication error rate r avg And an average communication error rate threshold value, and the maximum communication error rate r max And a maximum communication error rate threshold;
s3, according to the average communication error rate r avg And the maximum communication error rate r max Determining a level of the internal task;
s4, selectively executing a first communication strategy according to the level of the internal task, or hierarchically disassembling the zero-level task into a plurality of subtasks to form a new internal task and then executing a second communication strategy, or executing a third communication strategy;
the first communication strategy refers to at least one round of program running in one communication period, wherein each round of program comprises one external communication task and all zero-level tasks;
the third communication strategy is that at least one round of programs is operated in one communication period, and each round of programs comprises a plurality of external communication tasks and the zero-level task;
the second communication strategy refers to running multiple rounds of programs in a communication cycle, wherein each round of programs comprises an external communication task, a first-level subtask and the zero-level task which is not disassembled; or, the second communication strategy refers to running multiple rounds of programs in one communication cycle, and each round of the programs comprises an external communication task, a sub-task of the zero-level task which is disassembled, and the zero-level task which is not disassembled.
2. The outdoor unit communication method according to claim 1, wherein the average ber threshold comprises a first average ber threshold r avgs1 The maximum communication error rate threshold value comprises a first maximum communication error rate threshold value r maxs1 And a firstTwo maximum communication error rate threshold r maxs2 And r is maxs1 ＜r maxs2 ；
When the comparison result of the step S2 is r avg ＜r avgs1 And r is max ＜r maxs1 If yes, the step S3 determines that the level of the internal task is level 0, and the step S4 executes the first communication policy;
when the comparison result of the step S2 is r avg ＜r avgs1 And r is maxs1 ≤r max ＜r maxs2 If yes, the step S3 determines that the level of the internal task is level 1, and the step S4 executes the second communication policy;
when the comparison result of the step S2 is r avg ＜r avgs1 And r is max ≥r maxs2 If yes, the step S3 determines that the level of the internal task is level 2, and the step S4 executes the second communication policy.
3. The outdoor unit communication method according to claim 1, wherein the average ber threshold comprises a first average ber threshold r avgs1 And a second average communication error rate threshold r avgs2 And r is avgs1 ＜r avgs2 The maximum communication error rate threshold value comprises a first maximum communication error rate threshold value r maxs1 ；
When the comparison result of the step S2 is: r is a radical of hydrogen avgs1 ≤r avg ＜r avgs2 And r is max ＜r maxs1 If so, the step S3 determines that the level of the internal task is level 1, and the step S4 executes the second communication policy;
when the comparison result of the step S2 is: r is avg ≥r avgs2 And r is max ＜r maxs1 If yes, the step S3 determines that the level of the internal task is level 2, and the step S4 executes the second communication policy.
4. The outdoor unit communication method of claim 3, wherein the maximum communication error codeThe rate threshold further comprises a second communication error rate threshold r maxs2 And r is maxs1 ＜r maxs2 ；
When the comparison result of the step S2 is: r is avgs1 ≤r avg ＜r avgs2 And r is maxs1 ≤r max ＜r maxs2 If yes, the step S3 determines that the level of the internal task is level 2, and the step S4 executes the second communication policy;
when the comparison result of the step S2 is r avgs1 ≤r avg ＜r avgs2 And r is max ≥r maxs2 If so, the step S3 determines that the level of the internal task is level 3, and the step S4 executes the second communication policy;
when the comparison result of the step S2 is: r is avg ≥r avgs2 And r is maxs1 ≤r max ＜r maxs2 If so, the step S3 determines that the level of the internal task is level 3, and the step S4 executes the second communication policy;
when the comparison result of the step S2 is: r is a radical of hydrogen avg ≥r avgs2 And r is max ≥r maxs2 If yes, the step S3 determines that the level of the internal task is level 4, and the step S4 executes the third communication policy.
5. The outdoor unit communication method according to any one of claims 2 to 4, wherein when the level of the internal task is determined to be level 1 in the step S3, the step S4 comprises the steps of:
at least one zero-level task is disassembled into a plurality of first-level subtasks;
forming the first-level subtask and the zero-level task which is not disassembled into a new internal task;
executing a second communication strategy;
the second communication strategy refers to running multiple rounds of programs in one communication period, wherein each round of programs comprises an external communication task, one first-level subtask and the zero-level task which is not disassembled.
6. The outdoor unit communication method according to any one of claims 2 to 4, wherein, when the level of the internal task is determined to be level 2 in the step S3, the step S4 comprises the steps of:
at least one zero-level task is disassembled into a plurality of first-level subtasks, and at least one first-level subtask is continuously disassembled into a plurality of second-level subtasks;
and combining the second-level subtask, the first-level subtask which is not disassembled and the zero-level task which is not disassembled into a new internal task:
executing the second communication policy;
the second communication strategy refers to running multiple rounds of programs in one communication period, wherein each round of programs comprises an external communication task, a sub task of the zero-level task which is disassembled and the zero-level task which is not disassembled.
7. The outdoor unit communication method according to any one of claims 2 to 4, wherein, when the level of the internal task is determined to be level 3 in the step S3, the step S4 comprises the steps of:
at least disassembling one zero-level task into a plurality of first-level subtasks, continuously disassembling at least one first-level subtask into a plurality of second-level subtasks, and then continuously disassembling at least one second-level subtask into a plurality of third-level subtasks;
and combining the third-level subtask, the zero-level task which is not disassembled, the first-level subtask which is not disassembled and the second-level subtask which is not disassembled into a new internal task:
executing the second communication policy;
the second communication strategy refers to running multiple rounds of programs in one communication period, wherein each round of programs comprises an external communication task, a sub task of the zero-level task which is disassembled and the zero-level task which is not disassembled.
8. The outdoor unit communication method according to any one of claims 1 to 4, wherein after the step S4, the outdoor unit communication method further comprises the steps of:
and S5, returning to the step S1 after the preset time of the current communication strategy operation is kept.
9. The outdoor unit communication method according to claim 8, wherein the step S5 is performed by returning to the step S1 after the current communication policy is maintained for 5 minutes.
10. A multi-split air conditioner comprising a main control outdoor unit and a plurality of outdoor units, wherein the main control outdoor unit and the outdoor units are communicatively connected by the outdoor unit communication method according to any one of claims 1 to 9.
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