CN115200194A - Control method and device for outdoor unit of multi-split air conditioner, air conditioner and medium - Google Patents

Abstract

The invention provides a control method and a control device for an outdoor unit of a multi-split air conditioner, an air conditioner and a medium, wherein the control method comprises the following steps: carrying out multi-split heating operation; acquiring a discharge pressure parameter, a suction pressure parameter and a condenser temperature parameter of a first outdoor unit to be detected; judging whether the exhaust pressure parameter, the suction pressure parameter and the condenser temperature parameter meet preset conditions or not; if any two of the exhaust pressure parameter, the suction pressure parameter and the condenser temperature parameter meet preset conditions, the reversing of a four-way valve of the first outdoor unit is abnormal; and controlling and changing the running state of the first outdoor unit. The invention solves the problem of how to more accurately determine and control the outdoor unit with abnormal reversing of the four-way valve.

Description

Control method, device, air conditioner and medium for multi-connected outdoor unit

technical field

The present invention relates to the technical field of air conditioners, and in particular, to a control method, device, air conditioner and medium of a multi-connected outdoor unit.

Background technique

With the development of air conditioners, when the multi-connected air conditioners are running in parallel for heating, due to the large number of outdoor units, the commutation of the four-way valve of one of the outdoor units often occurs abnormally, resulting in the failure of the entire system to control the In the related art, when the heating operation of the multi-connection machine is abnormal, the outdoor unit with abnormal four-way valve commutation cannot be determined in time and accurately, and misjudgment of the outdoor unit with abnormal four-way valve commutation is easy to cause, which further leads to multi-connection. The heating effect is reduced.

It can be seen that how to more accurately determine and control the outdoor unit with abnormal commutation of the four-way valve has become an urgent problem to be solved.

SUMMARY OF THE INVENTION

The problem solved by the present invention is how to more accurately determine and control the outdoor unit with abnormal commutation of the four-way valve.

In order to solve the above problems, the present invention provides a control method for a multi-connected outdoor unit, including: multi-connection heating operation; obtaining the exhaust pressure parameters, suction pressure parameters and condenser temperature parameters of the first outdoor unit that need to be detected ; Determine whether the exhaust pressure parameter, the suction pressure parameter and the condenser temperature parameter meet the preset conditions; if any two of the exhaust pressure parameter, the suction pressure parameter and the condenser temperature parameter meet the preset conditions, then the first The four-way valve of the outdoor unit is abnormally commutated; the control changes the running state of the first outdoor unit.

Compared with the prior art, the effect that this solution can achieve: by acquiring the exhaust pressure parameter of the first outdoor unit, it is judged whether the exhaust pressure parameter satisfies the preset condition, and at the same time, the suction pressure parameter of the first outdoor unit is acquired , determine whether the suction pressure parameter meets the preset condition, and at the same time, obtain the condenser temperature parameter of the first outdoor unit, and determine whether the condenser temperature parameter meets the preset condition. A single judgment result that meets the preset condition can indicate that the four-way valve is replaced The direction is abnormal, but misjudgment caused by a single condition is prone to occur. Therefore, in this embodiment, it is necessary to combine the judgment results of any two of the above to determine whether the four-way valve in the first outdoor unit is abnormally commutated. Misjudgments due to sensor or detector deviations in conditions.

In one embodiment of the present invention, judging whether the exhaust pressure parameter, the suction pressure parameter, and the condenser temperature parameter meet the preset conditions includes: judging whether the exhaust pressure parameter is greater than or equal to a first preset value; when P ₁ ≥ When P _min +A, the exhaust pressure parameter satisfies the preset condition; when P ₁ <P _min +A, the exhaust pressure parameter does not meet the preset condition; wherein, P ₁ is the exhaust of the first outdoor unit The pressure parameter, P _min is the minimum exhaust pressure in the multiple running outdoor units, A is a constant parameter, and the first preset value is P _min +A.

Compared with the prior art, the effect that this solution can achieve: when P ₁ ≥ P _min +A, the exhaust pressure parameter satisfies the preset condition, that is, it means that the current exhaust pressure of the first outdoor unit is obvious. Higher than the minimum exhaust pressure, the high pressure side of the first outdoor unit is not directly connected to the high pressure sides of other outdoor units, so that the outdoor unit with abnormal commutation of the four-way valve can be more accurately determined.

In an embodiment of the present invention, judging whether the exhaust pressure parameter, the suction pressure parameter, and the condenser temperature parameter meet the preset conditions includes: judging whether the suction pressure parameter is less than or equal to a second preset value; when P ₂ ≤ When P _min -B, the suction pressure parameter satisfies the preset condition; when P ₂ >P _min -B, the suction pressure parameter does not meet the preset condition; wherein, P ₂ is the suction of the first outdoor unit Pressure parameter, B is a constant parameter, and the second preset value is P _min -B.

Compared with the prior art, the effect that this solution can achieve: when P ₂ ≤ P _min -B, the suction pressure parameter satisfies the preset condition, indicating that the current suction pressure of the first outdoor unit is low, at this time The low pressure side of the first outdoor unit is connected with the high pressure side of other outdoor units, and the pressure difference is small, so that the outdoor unit with abnormal commutation of the four-way valve can be more accurately determined.

In an embodiment of the present invention, the temperature parameters of the condenser include: the inlet pipe temperature of the condenser and the defrosting temperature of the condenser.

Compared with the prior art, the effect that this solution can achieve is that it is possible to more accurately determine whether the four-way valve is abnormally commutated by combining the inlet pipe temperature of the condenser and the defrosting temperature of the condenser.

In one embodiment of the present invention, judging whether the exhaust pressure parameter, the suction pressure parameter, and the condenser temperature parameter satisfy preset conditions includes: judging whether the inlet pipe temperature of the condenser is greater than the ambient temperature; and, judging the defrosting temperature of the condenser Whether it is greater than the ambient temperature; if and only when the condenser inlet pipe temperature is greater than the ambient temperature and the condenser defrost temperature is greater than the ambient temperature, the condenser temperature parameters meet the preset conditions.

Compared with the prior art, the effect that this solution can achieve: when the temperature of the inlet pipe of the condenser is greater than the ambient temperature and the defrosting temperature of the condenser is greater than the ambient temperature, it means that the first outdoor unit is in a cooling state at this time, so that it can be more accurate. To determine whether the four-way valve is reversed abnormally.

In an embodiment of the present invention, controlling to change the operating state of the first outdoor unit includes: stopping the operation of the compressor and fan of the first outdoor unit; closing the stop valves of the gas pipe and liquid pipe of the first outdoor unit; Enter the maintenance waiting state.

Compared with the prior art, the effect that this solution can achieve: stop the compressor and the fan of the first outdoor unit, and close the stop valve of the gas pipe and the liquid pipe of the first outdoor unit at the same time, so as to avoid the failure of the first outdoor unit During shutdown, the operation of other outdoor units causes refrigerant to flow into the faulty outdoor unit, so as to accurately shield the first outdoor unit that fails, and ensure that other outdoor units in the entire system can heat normally, so as not to affect the user experience.

In an embodiment of the present invention, the control method for a multi-connected outdoor unit further includes: the second outdoor unit where the normal four-way valve is located enters a strong mode; Increased operating frequency.

Compared with the prior art, the effect that the solution can achieve is to ensure the heating effect of the user.

In an embodiment of the present invention, a control device for a multi-line air conditioner is provided, including: a detection module, the detection module is used to detect the exhaust pressure parameter of the outdoor unit when the multi-line operates in a heating mode, The suction pressure parameter and the condenser temperature parameter; the judgment module, the judgment module is used to judge whether the exhaust pressure parameter, the suction pressure parameter and the condenser temperature parameter meet the preset conditions; the control module, the control module is used to determine whether the four-way valve is in the In the case of abnormal commutation, control the running state of the outdoor unit.

Compared with the prior art, the effect that this solution can achieve is that the control device can implement the steps of the control method in any embodiment of the present invention, so it has the beneficial effects of any of the above-mentioned embodiments.

In one embodiment of the present invention, an air conditioner is provided. The air conditioner includes: a processor, a memory, and a program or instruction stored in the memory and executable on the processor. When the program or instruction is executed by the processor, the The steps of any one of the above control methods.

Compared with the prior art, the effect that this solution can achieve: the air conditioner in this embodiment can execute the control method of any of the above-mentioned embodiments, so it has the beneficial effects of any of the above-mentioned embodiments, which will not be repeated here. In addition, the processor can run all the instructions and programs in the memory, so that the air conditioner can respond quickly and with high precision when implementing the instructions.

In an embodiment of the present invention, a readable storage medium is provided, and a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of any one of the above control methods are implemented.

Compared with the prior art, the effect that this solution can achieve: the readable storage medium is located in the steps of implementing the control method according to any embodiment of the present invention, so it has all the beneficial effects of the method according to any embodiment of the present invention. , and will not be repeated here.

Description of drawings

FIG. 1 is a flow chart of steps of a method for controlling a multi-connected outdoor unit in some embodiments;

2 is a schematic structural diagram of a multi-connected outdoor unit in some embodiments;

3 is a schematic structural diagram of a control device;

FIG. 4 is a schematic structural diagram of an air conditioner.

Description of reference numbers:

100, a control device; 101, a detection module; 102, a judgment module; 103, a control module; 200, an air conditioner; 201, a processor; 202, a memory.

Detailed ways

In order to make the above objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention will be described in detail.

Example 1:

Referring to FIG. 1 , the present embodiment provides a method for controlling a multi-connected outdoor unit, including: step S10 multi-connection heating operation; step S20 obtaining the exhaust pressure parameter, the suction pressure parameter and the parameter of the first outdoor unit to be detected. Condenser temperature parameter; step S30 judges whether the exhaust pressure parameter, suction pressure parameter and condenser temperature parameter meet the preset conditions; step S401 if any two of the exhaust pressure parameter, suction pressure parameter and condenser temperature parameter If the preset conditions are met, the commutation of the four-way valve of the first outdoor unit is abnormal; step S50 controls to change the operating state of the first outdoor unit.

In this embodiment, it should be noted that if and only if any two of the exhaust pressure parameter, the suction pressure parameter and the condenser temperature parameter meet the preset conditions, the process goes to step S401, if the exhaust pressure parameter If only one of the suction pressure parameter and the condenser temperature parameter satisfies the preset condition, the process goes to step S402, and the four-way valve of the first outdoor unit is commutated normally, so there is no need to check the operating state of the first outdoor unit at this time. make adjustments.

Wherein, the control method in this embodiment is applicable to the working condition that the multi-line air conditioner is in heating operation. At the same time, when multiple outdoor units are in parallel heating operation, see Figure 2. There are outdoor unit 1, outdoor unit 2, and outdoor unit 3. The outdoor unit corresponds to the indoor unit one by one, wherein one outdoor unit corresponds to one indoor unit, and one outdoor unit corresponds to one outdoor unit. Two corresponds to indoor unit two, and outdoor unit three corresponds to indoor unit three. Specifically, the first outdoor unit in this embodiment may be any one of the first outdoor unit, the second outdoor unit, and the third outdoor unit.

When multiple outdoor units are connected in parallel for heating, if the four-way valve of one of the outdoor units is abnormally commutated, the abnormal outdoor unit is equivalent to running in a cooling state, and this outdoor unit refers to the first outdoor unit in this embodiment. The low-pressure side of the first outdoor unit is connected to the high-pressure side of the other outdoor units in normal operation, so the exhaust pressure parameter of the first outdoor unit will increase at this time, and the suction pressure parameter of the first outdoor unit will increase. will decrease, and likewise, the condenser temperature parameters will also change.

Therefore, in this embodiment, by acquiring the exhaust pressure parameter of the first outdoor unit, it is judged whether the exhaust pressure parameter satisfies the preset condition, and at the same time, the suction pressure parameter of the first outdoor unit is obtained, and it is judged whether the suction pressure parameter satisfies the preset condition. Set the conditions, and at the same time, obtain the condenser temperature parameters of the first outdoor unit, and judge whether the condenser temperature parameters meet the preset conditions. A single judgment result meeting the preset conditions can indicate that the four-way valve is abnormal, but it is easy to occur due to a single condition. Therefore, in this embodiment, it is necessary to combine the judgment results of any two of the above to judge whether the four-way valve in the first outdoor unit is abnormally commutated, so as to avoid the deviation of the sensor or the detector in a single condition. resulting in misjudgment.

Further, in this embodiment, the determination results of the above three can be combined, that is, the discharge pressure parameter needs to meet the preset conditions, the suction pressure parameter meets the preset conditions, and the condenser temperature parameter meets the preset conditions, and three The parameters are satisfied at the same time, so that the accuracy of the detection results can be further improved.

Embodiment 2:

In this embodiment, judging whether the exhaust pressure parameter, the suction pressure parameter and the condenser temperature parameter meet the preset conditions includes: judging whether the exhaust pressure parameter is greater than or equal to a first preset value; when P ₁ ≥P _min +A , the exhaust pressure parameter satisfies the preset condition; when P ₁ <P _min +A, the exhaust pressure parameter does not meet the preset condition; wherein, P ₁ is the exhaust pressure parameter of the first outdoor unit, and P _min is the minimum exhaust pressure in a plurality of running outdoor units, A is a constant parameter, and the first preset value is P _min +A.

Among them, the preset conditions in this embodiment include: judging whether the exhaust pressure parameter is greater than or equal to a first preset value, and the first preset value is a factory preset value, which can be set by the user according to the specific working conditions of the user, wherein , preferably, the first preset value in this embodiment is P _min +A, A is a constant parameter, A recommended value [0.3, 0.6], closed interval, unit MPa, when P ₁ ≥P _min +A When the exhaust pressure parameter satisfies the preset condition, it means that the current exhaust pressure of the first outdoor unit is significantly higher than the minimum exhaust pressure, and the high pressure side of the first outdoor unit is not directly connected to the high pressure sides of other outdoor units. Therefore, at this time, it can be explained that the four-way valve of the first outdoor unit is abnormally reversed.

Embodiment three:

In this embodiment, judging whether the exhaust pressure parameter, the suction pressure parameter and the condenser temperature parameter meet the preset conditions includes: judging whether the suction pressure parameter is less than or equal to a second preset value; when P ₂ ≤P _min -B , the suction pressure parameter satisfies the preset condition; when P ₂ >P _min -B, the suction pressure parameter does not meet the preset condition; wherein, P ₂ is the suction pressure parameter of the first outdoor unit, and B is a constant parameter, and the second preset value is P _min -B.

In this embodiment, the preset conditions further include: judging whether the inspiratory pressure parameter is less than or equal to a second preset value, and similarly, the second preset value is a factory preset value, which can be set by the user according to the working conditions of the user , in this embodiment, preferably, the second preset value is P _min -B, B is also a constant parameter, and the constant parameter A is obtained according to multiple experiments, and the value range of B is preferably [0.05, 0.25 ] Closed interval, in MPa, when P ₂ ≤P _min -B, the suction pressure parameter satisfies the preset condition, indicating that the current suction pressure of the first outdoor unit is low, at this time, the low pressure side of the first outdoor unit and the The high-pressure side of other outdoor units is thought through, and the pressure difference is small, so it can be explained that the four-way valve of the first outdoor unit is abnormally commutated at this time.

Embodiment 4:

In this embodiment, the temperature parameters of the condenser include: the inlet pipe temperature of the condenser and the defrosting temperature of the condenser.

By combining the temperature of the inlet pipe of the condenser and the defrosting temperature of the condenser, it is possible to more accurately determine whether the four-way valve is abnormally commutated.

Among them, judging whether the exhaust pressure parameter, the suction pressure parameter and the condenser temperature parameter meet the preset conditions, including: judging whether the inlet pipe temperature of the condenser is greater than the ambient temperature; and, judging whether the defrosting temperature of the condenser is greater than the ambient temperature; when and Only when the inlet pipe temperature of the condenser is greater than the ambient temperature and the defrosting temperature of the condenser is greater than the ambient temperature, the temperature parameters of the condenser meet the preset conditions.

In this embodiment, the preset conditions further include: judging whether the inlet pipe temperature of the condenser is greater than the ambient temperature, and, judging whether the defrosting temperature of the condenser is greater than the ambient temperature, where the ambient temperature is the outdoor ambient temperature when the current multiple outdoor units are running, When the inlet pipe temperature of the condenser is greater than the ambient temperature and the defrosting temperature of the condenser is greater than the ambient temperature, it means that the first outdoor unit is in a cooling state at this time, and the four-way reversing valve is abnormally reversing.

Embodiment 5:

In this embodiment, controlling and changing the operating state of the first outdoor unit includes: stopping the compressor and fan of the first outdoor unit; closing the stop valves of the gas pipe and liquid pipe of the first outdoor unit; and entering the maintenance-waiting state of the first outdoor unit .

In this embodiment, combined with the above-mentioned embodiments, the first outdoor unit with abnormal four-way valve commutation can be accurately determined and determined, and further, it is necessary to precisely control the first outdoor unit with abnormal four-way valve commutation, and change the first outdoor unit with abnormal four-way valve commutation. The running state of the outdoor unit does not affect the use of other normally running outdoor units, ensuring the heating demand of the user.

Specifically, when the commutation of the four-way valve of the first outdoor unit is abnormal, the compressor and the fan of the first outdoor unit need to be stopped at this time, and the stop valves of the gas pipe and the liquid pipe of the first outdoor unit are closed at the same time. The purpose is to control the on-off of the gas pipe and the liquid pipe, so as to prevent the refrigerant from flowing into the faulty outdoor unit due to the operation of other outdoor units when the first outdoor unit fails and shuts down, so as to accurately shield the faulty first outdoor unit and ensure that other outdoor units in the whole system The outdoor unit can heat normally without affecting the user experience. Preferably, the gas pipe solenoid valve and the liquid pipe solenoid valve are selected as the cut-off valves of the gas pipe and the liquid pipe.

Further, when the first outdoor unit enters a state of waiting for maintenance, the controller will send fault information at this time, or, for example, the wired controller will display a fault code, or remotely push fault information, thereby prompting after-sales maintenance.

Further, after the maintenance of the first outdoor unit is completed, the control of the multi-connected outdoor unit in the The air pipe solenoid valve and liquid pipe solenoid valve of the first outdoor unit are opened, and the compressor, fan and four-way valve of the first outdoor unit are controlled in a conventional manner, that is, the first outdoor unit and other outdoor units with normal four-way valves are reversed in the same way. control.

Embodiment 6:

In this embodiment, the control method for the multi-connected outdoor unit further includes: entering a strong mode for the second outdoor unit where the normal four-way valve is located; the strong mode includes: increasing the maximum operating frequencies of the compressor and the fan.

Among them, it should be noted that the second outdoor unit represents an outdoor unit in normal operation and an outdoor unit in which the direction of the four-way valve is normally reversed. In this embodiment, since the first outdoor unit with abnormal commutation enters the maintenance state, the normal setting will affect the heating demand of the user. Therefore, in this embodiment, the second outdoor unit enters the strong mode, and the second outdoor unit enters the high-efficiency mode. The maximum operating frequency of the compressor and fan of the machine is increased, preferably, the maximum operating comment is increased by 10%, thereby increasing the maximum capacity output and ensuring the heating effect of the user.

Embodiment 7:

Referring to FIG. 3 , the present embodiment provides a control device 100 for a multi-line air conditioner 200 , including: a detection module 101 . The detection module 101 is configured to detect the exhaust pressure of an outdoor unit when the multi-line air conditioner operates in a heating mode. parameters, suction pressure parameters and condenser temperature parameters; the judgment module 102, the judgment module 102 is used to judge whether the exhaust pressure parameters, the suction pressure parameters and the condenser temperature parameters meet the preset conditions; the control module 103, the control module 103 uses It controls the running state of the outdoor unit when the four-way valve is in abnormal commutation.

Embodiment 8:

Referring to FIG. 4, the present embodiment provides an air conditioner 200. The air conditioner 200 includes: a processor 201, a memory 202, and a program or instruction stored in the memory 202 and executable on the processor 201, and the program or instruction is executed by the processor 201 implements the steps of any one of the above control methods when executed.

Wherein, since the air conditioner 200 in this embodiment can execute the control method of any one of the above embodiments, the air conditioner 200 in this embodiment can realize the solutions and beneficial effects of any one of the above embodiments, which will not be repeated here. .

Embodiment 9:

This embodiment provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of any one of the above control methods are implemented.

The readable storage medium may be any combination of one or more readable media, the readable medium may be a readable signal medium or a readable storage medium, and the readable storage medium may include, but is not limited to, electrical, magnetic, optical, Electromagnetic, infrared, or semiconductor systems, devices or devices, or any combination of the above. More specific examples of readable storage media include: electrical connections with one or more wires, portable disks, hard disks, random access memory (RAM), read only memory (ROM), erasable programmable read only memory ( EPROM or flash memory), fiber optics, portable compact disk read only memory, optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

Although the present invention is disclosed above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be based on the scope defined by the claims.

Claims (10)

1. A method for controlling an outdoor unit of a multi-split air conditioner, comprising:

the multi-connected machine is in hot operation;

acquiring a discharge pressure parameter, a suction pressure parameter and a condenser temperature parameter of a first outdoor unit to be detected;

judging whether the exhaust pressure parameter, the suction pressure parameter and the condenser temperature parameter meet preset conditions or not;

if any two of the exhaust pressure parameter, the suction pressure parameter and the condenser temperature parameter meet the preset conditions, reversing of a four-way valve of the first outdoor unit is abnormal;

and controlling to change the running state of the first outdoor unit.

2. The control method according to claim 1, wherein the determining whether the exhaust pressure parameter, the suction pressure parameter, and the condenser temperature parameter satisfy preset conditions includes:

judging whether the exhaust pressure parameter is greater than or equal to a first preset value;

when P is present ₁ ≥P _min When the pressure is + A, the exhaust pressure parameter meets the preset condition;

when P is ₁ ＜P _min When the pressure is + A, the exhaust pressure parameter does not meet the preset condition;

wherein, the P ₁ I.e. the discharge pressure parameter, P, of the first outdoor unit _min The minimum exhaust pressure in a plurality of running outdoor units, A is a constant parameter, and the first preset value is P _min +A。

3. The control method according to claim 2, wherein the determining whether the exhaust pressure parameter, the suction pressure parameter, and the condenser temperature parameter satisfy preset conditions includes:

judging whether the suction pressure parameter is less than or equal to a second preset value;

when P is ₂ ≤P _min B, the suction pressure parameter meets the preset condition;

when P is ₂ ＞P _min B, the suction pressure parameter does not meet the preset condition;

wherein, the P is ₂ The suction pressure parameter of the first outdoor unit, B is a constant parameter, and the second preset value is P _min -B。

4. The control method of claim 1, wherein the condenser temperature parameter comprises:

the temperature of the inlet pipe of the condenser and the defrosting temperature of the condenser.

5. The control method according to claim 4, wherein the determining whether the exhaust pressure parameter, the suction pressure parameter, and the condenser temperature parameter satisfy preset conditions includes:

judging whether the inlet pipe temperature of the condenser is higher than the ambient temperature or not; and the combination of (a) and (b),

judging whether the defrosting temperature of the condenser is higher than the ambient temperature or not;

and if and only if the condenser inlet pipe temperature is greater than the ambient temperature and the condenser defrosting temperature is greater than the ambient temperature, the condenser temperature parameter meets the preset condition.

6. The control method of claim 1, wherein the controlling changes an operation state of the first outdoor unit, comprising:

stopping operating the compressor and the fan of the first outdoor unit;

closing a stop valve of an air pipe and a liquid pipe of the first outdoor unit;

and the first outdoor unit enters a state to be maintained.

7. The control method according to any one of claims 1 to 6, characterized by further comprising:

the second outdoor unit where the four-way valve is normally reversed enters a strong effect mode;

the robust mode includes: the maximum operating frequency of the compressor and the fan is increased.

8. A control apparatus of a multi-split air conditioner, comprising:

the detection module is used for detecting an exhaust pressure parameter, a suction pressure parameter and a condenser temperature parameter of the outdoor unit under the condition that the multi-split air conditioner runs in a heating mode;

the judging module is used for judging whether the exhaust pressure parameter, the suction pressure parameter and the condenser temperature parameter meet preset conditions or not;

and the control module is used for controlling the running state of the outdoor unit under the condition that the four-way valve is in abnormal reversing.

9. An air conditioner, characterized in that the air conditioner comprises:

a processor, a memory and a program or instructions stored on the memory and executable on the processor, which when executed by the processor implement the steps of the control method of any one of claims 1 to 7.

10. A readable storage medium, characterized in that it stores thereon a program or instructions which, when executed by a processor, implement the steps of the control method according to any one of claims 1 to 7.

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