WO2021233475A1

WO2021233475A1 - Communication method for indoor and outdoor units of multi-split air conditioner, and multi-split air conditioner

Info

Publication number: WO2021233475A1
Application number: PCT/CN2021/101826
Authority: WO
Inventors: 禚百田; 时斌; 程绍江; 张锐钢; 王军; 高玉辉
Original assignee: 青岛海尔空调电子有限公司; 青岛海尔空调器有限总公司; 海尔智家股份有限公司
Priority date: 2020-11-20
Filing date: 2021-06-23
Publication date: 2021-11-25
Also published as: CN112611083A; CN112611083B

Abstract

The present invention relates to the technical field of air conditioners. Provided are a communication method for indoor and outdoor units of a multi-split air conditioner, and a multi-split air conditioner, which aim to solve the problems of the low communication speed and poor communication quality of indoor and outdoor units of an existing multi-split air conditioner. The multi-split air conditioner comprises an external communication task and an internal task, wherein the internal task at least comprises a zero-level task. The communication method for indoor and outdoor units of a multi-split air conditioner comprises the following steps: S1, determining a communication bit error rate of an indoor unit; S2, comparing the communication bit error rate with a communication bit error rate threshold to obtain a magnitude relationship therebetween; and S3, determining the level of an internal task according to a comparison result, selectively directly executing a first communication policy according to the level of the internal task, or hierarchically splitting a zero-level task into a plurality of subtasks to form a new internal task, and then executing a second communication policy, or directly executing a third communication policy. By means of the communication method for indoor and outdoor units, the level of an internal task is determined, and different communication policies are then selectively executed according to the level, so as to increase the communication speed of the indoor and outdoor units, and improve the communication quality thereof.

Description

Multi-connection internal and external machine communication method and multi-connection

Technical field

The invention belongs to the technical field of air conditioners, and specifically provides a multi-connection internal and external machine communication method and multi-connection.

Background technique

According to the number of internal and external machines, multi-line is divided into two types: one-to-many and multi-to-many. One-to-many refers to the cooperation of an external machine and multiple internal machines arranged in parallel, and multi-to-many refers to parallel connection with each other. The multiple external machines set up and the multiple internal machines set up in parallel work together. Whether it’s one-to-many or multi-to-many connections, usually an external machine is selected as the master external machine. The master external machine is communicatively connected with each internal machine and external machine, and uses the same or different communication protocols to communicate and interact. , To transmit control commands or data.

There are many internal machines with multiple connections, and the maximum number can reach 128 at present. The more the main control external machine is connected to the internal machine, the larger the amount of communication data, the slower the execution speed of various processing tasks in the program, which affects the real-time communication tasks, and is prone to errors in the timing of communication receiving and sending data, which may lead to misjudgment. In addition, the greater the number of internal computers, the more interference is introduced, which further reduces the reliability of communication quality.

At present, the quality and speed of communication between internal and external computers are improved through improved hardware design methods, such as the use of anti-interference and faster communication chips, program main chips, and so on.

However, the use of various chips with strong anti-interference and faster speed increases the cost of hardware design on the one hand, and on the other hand, the software needs to be adjusted synchronously according to different hardware, which may cause different hardware to be incompatible with the same internal and external computer system. In the problem.

In view of this, those skilled in the art urgently need to find another way to solve the problems of slow communication speed and poor quality of the existing multi-connection internal and external computers.

Summary of the invention

In order to solve the problems of slow communication speed and poor quality of the existing multi-connected internal and external machines, one aspect of the present invention provides a multi-connected internal and external machine communication method.

The multi-connections include external communication tasks and internal tasks. The external communication tasks refer to the communication tasks between the main control external machine and the internal machine of the multi-connections, and the internal tasks refer to the processing of the internal machine itself. The internal task includes at least one zero-level task, characterized in that the internal and external machine communication method includes the following steps: S1, determining the communication error rate of the internal machine; S2, comparing the communication error rate and The magnitude relationship between the communication error rate thresholds; S3. Determine the level of the internal task according to the comparison result, and selectively execute the first communication strategy directly according to the level of the internal task, or disassemble the zero in a hierarchical manner The second-level task consists of multiple subtasks forming a new internal task before executing the second communication strategy, or directly executing the third communication strategy.

In a preferred solution of the foregoing internal and external machine communication method, the communication error rate threshold includes a first communication error rate threshold r _set1 ; when r<r _set1 , the step S3 includes the following steps: S30, determining the internal The task level is level 0; S35. Execute the first communication strategy; the first communication strategy includes running at least one round of programs in one communication cycle, and each round of the program includes one of the external communication tasks and all of the external communication tasks. Zero task.

In a preferred solution of the foregoing internal and external computer communication method, the communication error rate threshold further includes a second communication error rate threshold r _set2 , and r _set1 <r _set2 ; when r _set1 ≤ r <r _set2 , the step S3 includes the following steps: S31. Determine that the level of the internal task is level 1; S311. Disassemble at least one of the zero-level tasks into multiple first-level subtasks; S312. Disassemble the first-level subtasks and undisassembled The zero-level task constitutes a new internal task; S36, execute a second communication strategy; the second communication strategy includes running multiple rounds of programs in one communication cycle, and each round of the program includes one of the external communication tasks, not disassembled The zero-level task and one of the first-level subtasks after disassembly.

In a preferred solution of the foregoing internal and external computer communication method, the communication error rate threshold further includes a third communication error rate threshold r _set3 , and r _set2 <r _set3 ; when r _set2 ≤ r <r _set3 , the step S3 includes the following steps: S32, determining that the level of the internal task is level 2; S321, disassembling at least one of the zero-level tasks into multiple first-level subtasks, and then disassembling at least one of the first-level subtasks as multiple subtasks. Two second-level subtasks; S322. Combine the second-level subtask, the undisassembled zero-level task and the first-level subtask into a new internal task; S36, execute a second communication strategy; the second communication The strategy includes running multiple rounds of programs in one communication cycle, and each round of the program includes one of the external communication task, the undisassembled zero-level task, and one of the first-level subtasks of the disassembled zero-level task. Or one of the secondary subtasks.

In a preferred solution of the foregoing internal and external machine communication method, the communication error rate threshold further includes a fourth communication error rate threshold r _set4 , and r _set3 <r _set4 ; when r _set3 ≤ r <r _set44 , the step S3 includes the following steps: S33, determining that the level of the internal task is level 3; S331, disassembling at least one of the zero-level tasks into multiple first-level subtasks, and then disassembling at least one of the first-level subtasks as multiple subtasks. Continue to disassemble at least one of the second-level subtasks into multiple third-level subtasks; S332. Disassemble the third-level subtask, the undisassembled zero-level task, and the first-level subtask; The task and the second-level subtask constitute a new internal task; S36, execute the second communication strategy; the second communication strategy includes running multiple rounds of programs in one communication cycle, and each round of the program includes one of the external communication tasks , The undisassembled zero-level task and one of the first-level subtasks, one of the second-level subtasks, or one of the third-level subtasks of the disassembled zero-level tasks.

In a preferred solution of the above-mentioned internal and external machine communication method, when r≥r _set4 , the step S3 includes the following steps: S34, determining that the level of the internal task is level 4; S37, executing the third communication strategy; The third communication strategy includes running at least one round of the program in one communication cycle, and each round of the program includes multiple external communication tasks and all the zero-level tasks.

In a preferred solution of the above-mentioned internal and external machine communication method, the step S1 specifically includes the following steps: S10. Acquire the total number of communications A and the number of successful communications a between the master control external machine and the internal machine in a communication cycle S11. Calculate the communication error rate r of the internal machine according to the following formula:

After the step S3, the internal and external machine communication method further includes the following steps: S4. Return to the step S1 after keeping the current communication strategy running for a preset period of time.

In a preferred solution of the foregoing internal and external machine communication method, the step S4 is specifically to keep running under the current communication strategy for 5 minutes and then return to the step S1.

The multi-connection of the present invention includes an external communication task and an internal task. The external communication task refers to the communication task between the main control external machine and the internal machine of the multi-connection, and the internal task refers to the processing of the internal machine itself. The internal task includes at least one zero-level task, and the multi-online internal and external computer communication method includes the following steps: S1, determining the communication error rate of the internal computer; S2, comparing the communication error rate and communication The magnitude relationship between the bit error rate thresholds; S3. Determine the level of the internal task according to the comparison result, and selectively execute the first communication strategy directly according to the level of the internal task, or disassemble the zero-level task hierarchically After forming a new internal task for multiple subtasks, execute the second communication strategy, or directly execute the third communication strategy.

The internal and external computer communication method determines the level of internal tasks according to the comparison result of the relationship between the communication error rate and the communication error rate threshold, and then selects and executes three different communication strategies according to different levels, especially when the hierarchical disassembly is in The higher the level of internal tasks, the higher the level, the more the level of disassembly, and then the disassembled internal tasks are formed into new internal tasks, and finally the corresponding communication strategy is executed to increase the number of external communication tasks in a communication cycle , To speed up the communication speed of the internal and external machines and improve the communication quality.

On the other hand, the present invention also provides a multi-connection, one main control external machine and multiple internal machines, the main control external machine and the internal machine are communicatively connected by the above-mentioned internal and external machine communication method.

It should be noted that the air conditioner of the present invention has all the technical effects of the above-mentioned internal and external machine communication method. Those skilled in the art can know without any doubt based on the foregoing description, so the details are not described herein again.

Description of the drawings

Figure 1 is a flowchart of the main steps of the multi-connection internal and external machine communication method of the present invention;

2 is a detailed step flowchart of an embodiment of the multi-connection internal and external machine communication method of the present invention;

Fig. 3 is a detailed step flowchart of another embodiment of the multi-connection internal and external machine communication method of the present invention.

Detailed ways

The preferred embodiments of the present invention will be described below with reference to the drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention, and are not intended to limit the protection scope of the present invention.

In the description of this application, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance.

As we all know, according to the number of external machines, multi-connections are divided into one-to-multi-connections and multi-to-multi-connections. Among them, the one-to-many multi-line includes a main control external machine and multiple internal machines arranged in parallel with each other. Control outside machine. Whether it is one-to-many-on-line or multi-to-many-on-line, the master external machine is connected to the internal machine or the external machine through communication, and the two interact through the same or different communication protocols to transmit control commands or data between each other.

Multi-connection usually includes external communication tasks and internal tasks. Among them, the external communication task refers to the communication task between the main control external machine and the internal machine, such as: the main control external machine and the internal machine or the main control external machine and the external machine to realize the mutual communication and execution of some functional function combinations , Such as receiving data function, sending data function, communication state conversion function, etc. Internal tasks refer to functions that have nothing to do with communication and do not need to communicate with the outside world. They are only some functional functions handled by the internal or external machine itself, such as: fault alarm processing, digital tube display, key operation, dial code selection, wind speed adjustment, operation mode Judgment, sensor detection, etc.

For ease of understanding, the following example illustrates the communication strategy between multi-connected internal and external machines: For example, the external communication task is I, and the internal task includes three zero-level tasks, which include A, B, and C, respectively, between the internal and external machines. The program is run according to the first communication strategy. The first communication strategy refers to running at least one round of the program in one communication cycle, and each round of the program includes an external communication task I and all zero-level tasks. Among them, the communication cycle refers to the time it takes 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 the disassembly process. For example, the first communication strategy is to run programs in the following order: I-A-B-C-I-A-B-C....

As described in the previous background art, the more the number of multi-connected internal machines, the slower the communication speed, and the worse the communication quality. For this reason, the present invention provides a multi-connected internal and external machine communication method to achieve improved multi-connections. The purpose of communication speed and quality.

Referring to Fig. 1, the multi-connection internal and external machine communication method of the present invention mainly includes the following steps:

S1. Determine the communication error rate of the internal machine.

In multi-line internal and external machine communication, the master external machine is the main transmitter, and the internal machine responds after receiving the correct data from the master external machine, otherwise it does not respond. After the main control external machine receives the correct response data from the internal machine, it will reply the reception OK signal to the internal machine, and the internal machine will stop sending the response after receiving this signal. If it does not receive the OK signal from the master external computer, the internal computer will continue to send responses until the maximum number of transmissions is reached.

There are two main reasons that cause the internal machine to continuously send a response, but it does not receive the OK signal from the main control external machine:

First, the internal computer program needs to process many internal tasks, and it is prone to delays when processing external communication tasks such as receiving or sending data, which affects the normal communication sequence, causes data errors in the communication bus, and causes the external computer to not receive a response or receive. The OK signal cannot be returned when the error response is reached;

Second, the communication bus interference is serious. Although the program sends and receives data according to the normal sequence, the bus data error is caused by the interference, and the internal machine cannot receive the correct data from the main control external machine and does not respond. Or the internal machine responded after receiving the correct data from the main control external machine, but the main control external machine could not receive the correct response data from the internal machine and could not reply to the reception OK signal, causing the internal machine to try to send multiple times. For example, if the maximum number of transmissions of the internal machine is limited to 100 times, if the main control external machine still cannot receive the data of the internal machine normally within these 100 times, the internal machine will give up the opportunity to send data in this round. But these 100 invalid communications occupies communication resources, greatly reducing the quality and speed of internal and external communications.

At present, the communication quality and speed between the main control external machine and the internal machine are measured by the indicator of communication error rate.

S2. Compare the magnitude relationship between the communication error rate and the communication error rate threshold;

S3. Determine the level of the internal task according to the comparison result, and selectively execute the first communication strategy according to the determined level, or execute the second communication strategy after disassembling the internal tasks into new internal tasks in layers, or execute the third communication Strategy.

In order to facilitate a better understanding, the following two embodiments are used to describe the multi-connection internal and external machine communication method of the present invention in detail with reference to FIGS. 2 and 3. 2 is a detailed flow chart of the first embodiment of the multi-connection internal and external machine communication method of the present invention, and FIG. 3 is a detailed step flow chart of the second embodiment of the multi-connection internal and external machine communication method of the present invention.

Example one:

Assuming that in this embodiment, the multi-connection includes external communication task I, and the internal task includes a zero-level task A.

The multi-line internal and external computer communication method includes the following steps:

S10. Obtain the total number of communications A and the number of successful communications a between the main control external machine and the internal machine in one communication cycle.

Among them, the total number of communications A refers to the total number of times the master external machine sends to an internal machine, and the number of successful communications a refers to the number of times the master external machine can correctly accept and reply an OK signal after the internal machine only responds once.

S11. Calculate the internal communication bit error rate r according to the following formula:

For example: suppose that the total number of communication times between the main control external machine and an internal machine is 80 times, and the number of successful communications is 76 times. In other cases, the internal machine does not send or sends multiple times. The communication error rate of this internal machine is:

In this embodiment, four communication error rate thresholds are set, which are the first communication error rate threshold r _set1 , the second communication error rate threshold r _set2 , the third communication error rate threshold r _set3 and the fourth communication error rate threshold. The code rate threshold is r _set4 , and r _set1 < _reet2 <r _set3 <r _set4 . It should be noted that the specific number of communication error rate thresholds can be adjusted by those skilled in the art according to actual needs, for example, it can be two or three or more than four.

In addition, the specific value of the communication error rate threshold depends on the installation and operation environment of the multi-connection, etc., and those skilled in the art set according to the actual situation. In this embodiment, the first communication error rate threshold rset1 is 5%, and the second communication error rate threshold is 5%. The rate threshold r _set2 is 10%, the third communication error rate threshold r _set3 is 15%, and the fourth communication error rate threshold r _set4 is 20%.

S20. Determine whether the communication error rate r is less than the first communication error rate threshold r _set1 , if yes, perform step S30, otherwise, perform step S21.

S30. Determine the level of internal task A as level 0;

S35. Execute the first communication strategy.

Among them, the first communication strategy includes executing at least one round of the program in one communication cycle, and each round of the program includes an external communication task and all zero-level tasks. For example: the first communication strategy is to run programs in the following order: I-A-I-A....

S21. Continue to determine whether the communication error rate r is less than the second communication error rate threshold r _set2 , if it is (ie r _set1 ≤r<r _set2 ), perform step S31, otherwise, perform step S22.

S31. Determine the level of internal task A as level 1;

S311. Disassemble the internal task A into multiple first-level subtasks;

S312. After identifying multiple first-level subtasks to form a new internal task, execute step S36, that is, the second communication strategy. The second communication strategy includes running multiple rounds of programs in one communication cycle, and each round of programs includes an external communication task and disassembly. A first-level subtask of the post-zero-level task.

For example, suppose that the internal task A is disassembled in step S311 into two first-level subtasks A1 and A2, and A1 and A2 are determined as the first new internal tasks in step S312, and then the I-A1-I- A2-I-A1...... The program is run in sequence.

S22. Continue to determine whether the communication error rate r is less than the third communication error rate threshold r _set3 , if yes (ie, r _set2 _≤r <r set3 ), perform step S32, otherwise, perform step S23.

S32. Determine the level of internal task A as level 2;

S321. Disassemble the internal task A into multiple first-level subtasks, and then disassemble at least one first-level subtask into multiple second-level subtasks;

S322. After determining that the second-level subtask and the undisassembled first-level subtask form a new internal task, perform step S36, that is, the second communication strategy. The second communication strategy includes running multiple rounds of programs in one communication cycle, and each round includes A first-level subtask or a second-level subtask of an external communication task and the zero-level task after disassembly.

For example, suppose that the internal task A is disassembled into two first-level subtasks A1 and A2 in step S321, and then the first-level subtask A1 is disassembled into two second-level subtasks A11 and A12, and then A11 is determined in step S322 , A12 and A2 are the second new internal tasks, and finally run the program in the order of I-A11-I-A2-I-A12-I-A11-I-A2-I-A12... according to the second communication strategy.

S23, r continues to judge the communication error rate is less than a fourth communication error rate threshold _r set4, if (i.e., _r _set3 ≤r <r set4) is executed step S33, the NO (i.e. _r≥r set4) executes step S34.

S33. Determine the level of internal task A as level 3;

S331. Disassemble the internal task A into multiple first-level subtasks, then disassemble at least one first-level subtask into multiple second-level subtasks, and continue to disassemble at least one second-level subtask into multiple third-level subtasks;

S332. After determining that the third-level subtask and the undisassembled first-level subtask and the second-level subtask are the third new internal tasks, step S36 is executed, that is, the second communication strategy is executed, and the second communication strategy includes running in one communication cycle Multiple rounds of the program, each round of the program includes an external communication task and a first-level subtask, a second-level subtask or a third-level subtask of the zero-level task after disassembly.

For example, suppose that the internal task A is disassembled into two first-level subtasks A1 and A2 in step S331, and then the first-level subtask A1 is disassembled into two second-level subtasks A11 and A12, and the second-level subtask is continued to be disassembled A11 is A111 and A112, and then A111, A112, A12, and A2 are identified as the second new internal tasks in step S332, and finally I-A111-I-A2-I-A12-I-A112-I is adopted according to the second communication strategy -A111-I-A2...... The program is run in sequence.

S34. Determine the level of the internal task A as level 4.

It should be noted that the number of task dismantling layers is related to the functions implemented by the program. The finer the dismantling, the shorter the running time of each subtask, but the more complex the program design and implementation. Therefore, in order to achieve the difference between the speed of communication and the difficulty of program design Balanced, so that the communication cost of the internal and external machines is at a normal level. In this embodiment, when the internal task A is determined to be level 4, no new internal tasks are formed through hierarchical disassembly, but step S37 is directly executed.

S37. Perform the third communication task. The third communication task includes running at least one round of the program in one communication cycle, and each round of the program includes multiple external communication tasks and all zero-level tasks.

For example, if r≥r _set4 , execute the program in the order of II-...-IAII-...-IA....

It can be seen that the internal and external machine communication method of this embodiment determines the level of internal tasks according to the comparison result of the magnitude relationship between the communication error rate and the communication error rate threshold, and disassembles the internal tasks at a higher level in a hierarchical manner, the higher the level is The more levels of disassembly, the disassembled internal tasks are formed into new internal tasks, and finally run in accordance with the normal communication strategy, which increases the number of external communication tasks in a communication cycle, thereby accelerating the communication speed of internal and external machines, and improving Communication quality.

In addition, the internal and external machine communication method of this embodiment defines the highest level of internal tasks as level 4. When it is determined that the level of internal tasks is level 4, it is a means to directly increase the number of times of external communication tasks in the normal communication strategy to achieve acceleration The communication speed of internal and external computers is to improve the quality of communication, so as to avoid the problem of excessive dismantling of levels and excessive difficulty in program design, so as to achieve a balance between speeding up communication, improving communication quality and controlling costs.

Continuing to refer to Fig. 2, after step S3, the multi-connection internal and external machine communication method further includes the following steps:

S4. Return to step S10 after running the current communication strategy for a preset period of time.

In actual operation, due to the differences in the installation environment and internal machine models, the bit error rate of each internal machine may be different, so the level of internal tasks is also different. After the addition of step S4, the internal and external machine communication method The internal task level of the internal machine can be dynamically adjusted to better adapt to the use and installation of multiple connections. In this embodiment, the current communication strategy runs for 5 minutes and then returns to step S10. Of course, those skilled in the art can set the value according to actual needs.

Embodiment two:

Compared with the first embodiment, the internal tasks in this embodiment include multiple zero-level tasks, which can be specifically the first zero-level task A, the second zero-level task B, and the third zero-level task C, for example: the first zero-level task. Level task A is sensor detection, the second zero level task B is wind speed adjustment, and the third zero level task C is the operation mode judgment. It should be noted that this article is only for illustrative purposes and lists the above three zeros. For level tasks, those skilled in the art can set the number of zero-level tasks in the internal tasks and the specific content referred to by each zero-level task according to actual conditions, and the external tasks are still represented by I.

The multi-connection internal and external machine communication method of this embodiment includes the following steps:

S10'. Obtain the total number of communications A and the number of successful communications a between the main control external machine and the internal machine in one communication cycle.

S11'. Calculate the internal communication bit error rate r according to the following formula:

In this embodiment, four communication error rate thresholds are set, which are the first communication error rate threshold r _set1 , the second communication error rate threshold r _set2 , the third communication error rate threshold r _set3 and the fourth communication error rate threshold. The code rate threshold is r _set4 , and r _set1 <r _set2 <r _set3 <r _set4 . It should be noted that the specific number of communication error rate thresholds can be adjusted by those skilled in the art according to actual needs, for example, it can be two or three or more than four.

S20': Determine whether the communication error rate r is less than the first communication error rate threshold r _set1 , if yes, perform step S30', otherwise, perform step S21'.

S30'. Determine the level of internal tasks as level 0;

S40', perform the first communication task.

The first communication strategy includes running at least one round of the program in a communication cycle, and each round of the program includes an external communication task and all zero-level tasks.

For example, the running sequence of the first communication strategy in this embodiment is: I-A-B-C-I-A-B-C....

S21', continue to determine whether the communication error rate r is less than the second communication error rate threshold r _set2 , if yes, perform step S31', otherwise, perform step S22'.

S31. Determine the level of internal tasks as level 1;

S311. At least one zero-level task of disassembling internal tasks is multiple first-level subtasks;

S312. After identifying multiple first-level subtasks and undisassembled zero-level tasks as the first new internal task, execute step S36', that is, the second communication strategy, which includes running multiple rounds of programs in one communication cycle, and each round of the program Including an external communication task, an undisassembled zero-level task, and a first-level subtask of the disassembled zero-level task.

For example, suppose that the first zero-level task A is disassembled into two first-level subtasks A1 and A2 in step S311, and the second zero-level task B is disassembled into three first-level subtasks B1, B2, and B3, step S312 The first-level subtasks A1, A2, B1, B2, and B3 and the undisassembled third zero-level task C are identified as the first new internal task, and then the program is run in the following order according to the second communication strategy:

I—A1—B1—C

—I—A2—B2—C

—I—A1—B3—C....

S22', continue to determine whether the communication error rate r is less than the third communication error rate threshold r _set3 , if yes, perform step S32', otherwise, perform step S23'.

S32', determine the level of internal tasks as level 2;

S321'. Disassemble at least one zero-level task into multiple first-level subtasks, and then disassemble at least one first-level subtask into multiple second-level subtasks;

S322', after determining that the second-level subtask, the undisassembled first-level subtask and the zero-level task are the second new internal tasks, perform step S36', that is, the second communication task, which includes running multiple rounds of programs in one communication cycle, Each round of the program includes an external communication task, an undisassembled zero-level task, and a first-level subtask or a second-level subtask of the disassembled zero-level task.

For example, suppose that in step S321', the internal task A is disassembled into two first-level subtasks A1 and A2, and the second zero-level task B is disassembled into three first-level subtasks B1, B2, and B3, and then one is disassembled. The first-level subtask A1 is three second-level subtasks A11, A12, and A13, and the first-level subtask B2 is disassembled into two second-level subtasks B21 and B22, and then A11, A12, A13, A2, B1 are identified in step S322 , B21, B22, B3 and C are the second new internal tasks, and finally run the program in the following order according to the second communication strategy:

I—A11—B1—C

—I—A2—B21—C

—I—A12—B3—C

—I—A2—B1—C

—I—A13—B22—C

—I—A2—B3—C

….

S23', continue to determine whether the communication error rate r is less than the fourth communication error rate threshold r _set4 , if yes, perform step S33', otherwise, perform step S34'.

S33', determine the level of internal tasks as level 3;

S331'. Disassemble at least one zero-level task into multiple first-level subtasks, then disassemble at least one first-level subtask into multiple second-level subtasks, and continue to disassemble at least one second-level subtask into multiple third-level subtasks Task;

S332', after determining that the three-level subtask and the undisassembled zero-level task, the first-level subtask and the second-level subtask are the third new internal tasks, perform step S36', that is, the second communication task, and the device is included in one communication cycle There are multiple rounds of programs running inside, and each round of the program includes an external communication task, a first-level subtask, a second-level subtask, or a third-level subtask for the disassembled zero-level task and the disassembled zero-level task.

For example, suppose in step S331' that the first zero-level task A is disassembled into two first-level subtasks A1 and A2, and the second zero-level task B is disassembled into three first-level subtasks B1, B2, and B3, and then Disassemble the first level subtask A1 into three second level subtasks A11, A12 and A13, disassemble the first level subtask B2 into two second level subtasks B21 and B22, and continue to disassemble the second level subtask A11 into two three subtasks. Level subtasks A111 and A112, then in step S322', A111, A112, A113, A12, A13, A2, B1, B21, B22, B3 and C are identified as the second new internal tasks, and finally according to the second communication strategy as follows Run the program sequentially:

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

….

S34'. Determine the level of the internal task A as level 4.

It should be noted that the number of task dismantling layers is related to the functions implemented by the program. The finer the dismantling, the shorter the running time of each subtask, but the more complex the program design and implementation. Therefore, in order to achieve the difference between the speed of communication and the difficulty of program design Balanced, so that the communication cost of the internal and external machines is at a normal level. In this embodiment, when it is determined that the level of internal task A is level 4, no new internal tasks are formed through hierarchical disassembly, and step S50' is directly executed. .

S37', the third communication strategy. The third communication strategy includes running at least one round of programs in one communication cycle, and each round of programs includes multiple external communication tasks and all zero-level tasks.

For example, if r≥r _set4 , run the program in the following order according to the third communication strategy: II-...-IABCII-...-IABC....

Similarly, continue to refer to Fig. 3, after step S3, the internal and external machine communication method of this embodiment further includes the following steps:

S4. Return to step S10' after running for a preset period of time according to the current communication strategy.

In addition to the above-mentioned internal and external machine communication method, the present invention also provides a multi-connection including a master external machine and a plurality of internal machines. The master external machine and the plurality of internal machines are communicatively connected by the above internal and external machine communication method. . It should be noted that the basic functional components and working principles constituting the air conditioner are basically the same as those in the prior art, and those skilled in the art can fully implement it based on the prior art, so this article will not repeat them.

So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

A multi-connection internal and external machine communication method, the multi-connection includes an external communication task and an internal task, the external communication task refers to the communication task between the multi-connection master external machine and the internal machine, the internal A task refers to a task processed by the internal machine itself, the internal task includes at least one zero-level task, and is characterized in that the internal and external machine communication method includes the following steps:

S1. Determine the communication error rate of the internal machine;

S2. Compare the magnitude relationship between the communication error rate and the communication error rate threshold;

S3. Determine the level of the internal task according to the comparison result, and selectively execute the first communication strategy according to the level of the internal task, or disassemble the zero-level task into multiple subtasks to form a new internal task. Execute the second communication strategy, or execute the third communication strategy.
The internal and external computer communication method according to claim 1, wherein the communication error rate threshold comprises a first communication error rate threshold r set1 ;

When r<r set1 , the step S3 includes the following steps:

S30. Determine that the level of the internal task is level 0;

S35. Execute the first communication strategy;

The first communication strategy includes running at least one round of the program in one communication cycle, and each round of the program includes one of the external communication tasks and all of the zero-level tasks.
The internal and external computer communication method according to claim 2, wherein the communication error rate threshold further comprises a second communication error rate threshold r set2 , and r set1 <r set2 ;

When r set1 ≤r<r set2 , the step S3 includes the following steps:

S31. Determine the level of the internal task as level 1;

S311. Disassemble at least one of the zero-level tasks into multiple first-level subtasks.

S312. Determine that the first-level subtask and the undisassembled zero-level task form a new internal task;

S36. Execute the second communication strategy;

The second communication strategy includes running multiple rounds of programs in one communication cycle, and each round of the program includes one of the external communication tasks, the undisassembled zero-level task, and the disassembled first-level subtask.
The internal and external computer communication method according to claim 3, wherein the communication error rate threshold further comprises a third communication error rate threshold r set3 , and r set2 <r set3 ;

When r set2 ≤r <r set3, the step S3 includes the following steps:

S32. Determine that the level of the internal task is level 2;

S321. Disassemble at least one of the zero-level tasks into multiple first-level subtasks, and then disassemble at least one of the first-level subtasks into multiple second-level subtasks;

S322. Combine the second-level subtask and the undisassembled zero-level task and the first-level subtask into a new internal task;

S36. Execute the second communication strategy;

The second communication strategy includes running multiple rounds of programs in one communication cycle, and each round of the program includes one of the external communication task, the undisassembled zero-level task, and the disassembled zero-level task. The first-level subtask or one of the second-level subtasks.
The internal and external computer communication method according to claim 4, wherein the communication error rate threshold further comprises a fourth communication error rate threshold r set4 , and r set3 <r set4 ;

When r set3 ≤r <r set4 , the step S3 includes the following steps:

S33. Determine the level of the internal task to be level 3;

S331. Disassemble at least one of the zero-level tasks into multiple first-level subtasks, and then disassemble at least one of the first-level subtasks into multiple second-level subtasks, and continue to disassemble at least one of the second-level subtasks. Multiple three-level subtasks;

S332. Combine the three-level subtask and the undisassembled zero-level task, the first-level subtask, and the second-level subtask into a new internal task;

S36. Execute the second communication strategy;

The second communication strategy includes running multiple rounds of programs in one communication cycle, and each round of the program includes one of the external communication task, the undisassembled zero-level task, and the disassembled zero-level task. The first-level subtask, the second-level subtask, or the third-level subtask.
The internal and external machine communication method according to claim 5, characterized in that,

When r≥r set4 , the step S3 includes the following steps:

S34. Determine that the level of the internal task is level 4;

S37. Execute the third communication strategy;

The third communication strategy includes running at least one round of the program in one communication cycle, and each round of the program includes multiple external communication tasks and all the zero-level tasks.
The internal and external computer communication method according to any one of claims 1 to 6, wherein the step S1 specifically includes the following steps:

S10. Acquire the total number of communications A and the number of successful communications a between the master control external machine and the internal machine in one communication cycle;

S11. Calculate the communication error rate r of the internal machine according to the following formula:
The internal and external machine communication method according to any one of claims 1 to 6, characterized in that, after the step S3, the internal and external machine communication method further comprises the following steps:

S4: Keep running with the current communication strategy for a preset period of time and then return to the step S1.
The internal and external computer communication method according to claim 8, wherein the step S4 is specifically to keep running under the current communication strategy for 5 minutes and then return to the step S1.
A multi-connection, comprising a main control external machine and multiple internal machines, characterized in that the main control external machine and the internal machine communicate through the internal and external machine communication method according to any one of claims 1 to 9 connect.