Air conditioner, control method, device and readable storage medium thereof

Abstract

The present invention provides an air conditioner, a control method, a device, and a readable storage medium thereof. The control method includes obtaining the compressor's discharge pressure, discharge temperature, intake pressure, and intake temperature; calculating and determining the enthalpy change rate based on the discharge pressure, discharge temperature, intake pressure, and intake temperature; and determining whether the compressor has experienced performance degradation based on the enthalpy change rate. The present invention addresses the problem that the technical solutions in related arts cannot accurately detect compressor performance degradation before the air conditioner abnormally shuts down.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an air conditioner and a control method, device and readable storage medium thereof. Background Art

[0002] In air conditioners, when the compressor starts and stops excessively, the compressor is overloaded in buildings with heavy air-conditioning loads, the compressor size and welding strength vary, and the compressor oil volume is reduced in long pipe applications, the compression load will increase, causing wear on the compressor's bearings and other sliding parts. In some cases, the compressor may experience performance degradation prematurely.

[0003] When compressor performance continues to decline, current and exhaust pressure will increase excessively, causing the air conditioner to shut down unexpectedly. The air conditioner will be unusable until after-sales service personnel replace the compressor. When air conditioners in shops and offices shut down, this can also cause significant losses to users. Therefore, if compressor degradation can be detected before an air conditioner shuts down due to an abnormality, compressor replacement can be planned based on air conditioner usage, minimizing user losses. For example, in a shop or office, the air conditioner can continue to operate during the week and replace the compressor on weekends.

[0004] Although there is currently a method to determine compressor performance degradation by measuring the increase in compressor motor current, the motor current is sensitive to changes in compression load. When liquid refrigerant is mixed into the intake refrigerant, or the originally stopped indoor unit starts running, causing an increase in refrigerant circulation, and other factors lead to an excessive increase in the compressor load, the motor current will also increase accordingly, which may be mistakenly judged as compressor performance degradation.

[0005] Another method is to determine compressor performance degradation by measuring the decrease in the compressor's insulation efficiency. However, calculating insulation efficiency requires calculating the entropy of the intake and exhaust refrigerant, or calculating the change in the refrigerant's physical properties during theoretical compression under adiabatic conditions. This formula is complex and increases the capacity of the air conditioner controller's microcontroller, prolonging the control logic development cycle.

[0006] It can be seen that the problem existing in the related art is that the technical solutions in the related art cannot accurately detect the performance degradation of the compressor before the air conditioner stops abnormally. Summary of the Invention

[0007] The problem to be solved by the present invention is that the technical solutions in the related art cannot accurately detect the performance degradation of the compressor before the air conditioner stops abnormally.

[0008] To solve the above problems, a first object of the present invention is to provide a method for controlling an air conditioner.

[0009] A second object of the present invention is to provide a control device for an air conditioner.

[0010] A third object of the present invention is to provide an air conditioner.

[0011] A fourth object of the present invention is to provide a readable storage medium.

[0012] To achieve the first objective of the present invention, an embodiment of the present invention provides a method for controlling an air conditioner, the method comprising:

[0013] S100: Obtaining the exhaust pressure, exhaust temperature, suction pressure, and suction temperature of the compressor;

[0014] S200: Calculate and determine the enthalpy change rate based on the exhaust pressure, exhaust temperature, intake pressure, and intake temperature;

[0015] S300: Determine whether the compressor performance has deteriorated based on the enthalpy change rate.

[0016] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the method of this embodiment determines whether the performance of the compressor has deteriorated by calculating the enthalpy change rate, and will not be affected by short-term load changes, etc. The performance degradation of the compressor can be determined by using the steadily changing enthalpy change rate, thereby preventing misjudgment caused by excessive increase in the compressor load, and effectively increasing the reliability of the method of the present invention.

[0017] In one embodiment of the present invention, S200 includes:

[0018] S210: Calculate and determine exhaust enthalpy based on exhaust pressure and exhaust temperature;

[0019] S220: Calculate and determine the intake enthalpy based on the intake pressure and the intake temperature;

[0020] S230: Enthalpy change rate = (exhaust enthalpy - intake enthalpy) / (exhaust pressure - intake pressure).

[0021] Compared with the existing technology, the technical effect achieved by adopting this technical solution is: the enthalpy change rate calculated by the method of this embodiment can accurately reflect the actual working condition of the compressor, and at the same time, there is no need to use complex formulas to calculate the refrigerant entropy, and it also avoids the problems of increasing the microcontroller capacity of the air-conditioning controller and extending the control logic development cycle.

[0022] In one embodiment of the present invention, S300 includes:

[0023] S310: Calculate and determine the difference between the enthalpy change rate and the reference enthalpy change rate;

[0024] S320: When the difference is greater than or equal to the first threshold, it is determined that the compressor performance has deteriorated.

[0025] Compared with the prior art, the technical effect achieved by adopting this technical solution is: by comparing the difference between the enthalpy change rate and the reference enthalpy change rate with the first threshold, it is possible to accurately determine whether the compressor has a performance degradation problem.

[0026] In one embodiment of the present invention, S300 further includes:

[0027] S330: When the difference is greater than or equal to the second threshold and less than the first threshold, the number n is increased by 1, and after the first time threshold, steps S100 to S300 are performed again;

[0028] S340: If the number n reaches a third threshold within the second time threshold, it is determined that the compressor performance has deteriorated;

[0029] The first threshold is greater than the second threshold, the second time threshold is greater than the first time threshold, and the initial value of n is 0.

[0030] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the solution of this embodiment can accurately determine whether the compressor has a performance degradation problem.

[0031] In one embodiment of the present invention, before S100, the control method further includes:

[0032] S50: Control the air conditioner to operate under rated operating conditions, and obtain a test exhaust pressure, a test exhaust temperature, a test suction pressure, and a test suction temperature;

[0033] S60: Calculate and determine a reference enthalpy change rate according to the test exhaust pressure, the test exhaust temperature, the test intake pressure, and the test intake temperature.

[0034] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the method of this embodiment can accurately obtain the reference enthalpy change rate, and the control method of the present invention subsequently judges whether the compressor has performance degradation by comparing the enthalpy change rate with the reference enthalpy change rate. The method of this embodiment improves the accuracy and reliability of the control method of the present invention.

[0035] In one embodiment of the present invention, before step S100, the control method further includes: obtaining a plurality of initial enthalpy change rates of the air conditioner at a plurality of different compression ratios; determining a fitting formula between the compression ratio and the initial enthalpy change rate based on the plurality of compression ratios and the plurality of initial enthalpy change rates;

[0036] The control method also includes:

[0037] S250: Obtaining the current compression ratio of the compressor;

[0038] S260: Determine a reference enthalpy change rate based on the current compression ratio and a fitting formula.

[0039] Compared with the existing technology, the technical effect achieved by adopting this technical solution is: when the outdoor temperature and the operating capacity of the indoor unit change, the compression ratio will also change, and the enthalpy change rate will also change. The method of this embodiment takes this situation into consideration and effectively improves the accuracy of judging the performance degradation of the compressor.

[0040] In one embodiment of the present invention, the compression ratio and the base enthalpy change rate are positively correlated.

[0041] To achieve the second purpose of the present invention, an embodiment of the present invention provides a control device for an air conditioner, the control device including: a detection module, the detection module is used to obtain the exhaust pressure, exhaust temperature, intake pressure and intake temperature of the compressor; a calculation module, the calculation module is used to calculate and determine the enthalpy change rate based on the exhaust pressure, exhaust temperature, intake pressure and intake temperature; and a judgment module, the judgment module is used to judge whether the performance of the compressor has deteriorated based on the enthalpy change rate.

[0042] The control device of the air conditioner in the embodiment of the present invention implements the steps of the control method of the air conditioner in any embodiment of the present invention, and thus has all the beneficial effects of the control method of the air conditioner in any embodiment of the present invention, which will not be repeated here.

[0043] To achieve the third purpose of the present invention, an embodiment of the present invention provides an air conditioner, which includes: a processor, a memory, and a program or instruction stored in the memory and runnable on the processor. When the program or instruction is executed by the processor, the steps of the air conditioner control method as in any embodiment of the present invention are implemented.

[0044] The air conditioner of the embodiment of the present invention implements the steps of the control method of the air conditioner of any embodiment of the present invention, and thus has all the beneficial effects of the control method of the air conditioner of any embodiment of the present invention, which will not be repeated here.

[0045] To achieve the fourth purpose of the present invention, an embodiment of the present invention provides a readable storage medium, which stores a program or instruction. When the program or instruction is executed by a processor, the steps of the air conditioner control method as in any embodiment of the present invention are implemented.

[0046] The readable storage medium of the embodiment of the present invention implements the steps of the air conditioner control method of any embodiment of the present invention, and thus has all the beneficial effects of the air conditioner control method of any embodiment of the present invention, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 A flowchart of a method for controlling an air conditioner according to some embodiments of the present invention;

[0048] Figure 2 FIG1 is a schematic diagram of a method for controlling an air conditioner according to some embodiments of the present invention;

[0049] Figure 3 FIG2 is a second schematic diagram of a method for controlling an air conditioner according to some embodiments of the present invention;

[0050] Figure 4 This is a third schematic diagram of a method for controlling an air conditioner according to some embodiments of the present invention. DETAILED DESCRIPTION

[0051] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0052] 1 , this embodiment provides a method for controlling an air conditioner, the method comprising:

[0053] S100: Obtaining the exhaust pressure, exhaust temperature, suction pressure, and suction temperature of the compressor;

[0054] S200: Calculate and determine the enthalpy change rate based on the exhaust pressure, exhaust temperature, intake pressure, and intake temperature;

[0055] S300: Determine whether the compressor performance has deteriorated based on the enthalpy change rate.

[0056] In this embodiment, the compressor includes an exhaust pressure sensor for detecting exhaust pressure, an intake pressure sensor for detecting intake pressure, an exhaust temperature sensor for detecting exhaust temperature, and an intake temperature sensor for detecting intake temperature.

[0057] Referring to FIG. 2 , when the compressor deteriorates, the enthalpy change rate will increase. Therefore, whether the compressor performance deteriorates can be determined by the change in the enthalpy change rate.

[0058] It can be understood that the method of this embodiment determines whether the performance of the compressor has deteriorated by calculating the enthalpy change rate, and will not be affected by short-term load changes, etc. The performance degradation of the compressor can be determined by using the steadily changing refrigerant temperature. Therefore, it can prevent misjudgment caused by excessive increase in the compressor load, and effectively increase the reliability of the method of the present invention.

[0059] Furthermore, in a specific embodiment, S200 includes:

[0060] S210: Calculate and determine exhaust enthalpy based on exhaust pressure and exhaust temperature;

[0061] S220: Calculate and determine the intake enthalpy based on the intake pressure and the intake temperature;

[0062] S230: Enthalpy change rate = (exhaust enthalpy - intake enthalpy) / (exhaust pressure - intake pressure).

[0063] In this embodiment, the pressure change before and after compression is calculated based on the exhaust pressure detected by the exhaust pressure sensor and the intake pressure detected by the intake pressure sensor; the exhaust enthalpy is calculated based on the exhaust pressure and the exhaust temperature measured by the exhaust temperature sensor; the intake enthalpy is calculated based on the intake pressure and the intake temperature measured by the intake temperature sensor; and the enthalpy change before and after compression is calculated based on the exhaust enthalpy and the intake enthalpy; and the ratio of the pressure change before and after compression to the enthalpy change before and after compression is used as the enthalpy change rate.

[0064] For example, refrigerants with pressures less than 15 bar are considered low-pressure refrigerants, while refrigerants with pressures ≤ 15 bar are considered high-pressure refrigerants. For low-pressure refrigerants, enthalpy (kJ / kg) = -0.171 × pressure (bar)² - 0.00341 × superheat (°C)² + 0.0297 × pressure (bar) × superheat (°C) + 4.21 × pressure (bar) + 0.887 × superheat (°C) + 401. For high-pressure refrigerants, enthalpy (kJ / kg) = 0.0212 × pressure (bar)² - 0.0164 × superheat (°C)² + 0.0354 × pressure (bar) × superheat (°C) + 0.684 × pressure (bar) + 1.03 × superheat (°C) + 421.

[0065] Furthermore, in S210, the exhaust enthalpy is calculated and determined based on the exhaust pressure and the exhaust temperature. If the refrigerant at the exhaust port is a low-pressure refrigerant, the exhaust enthalpy is calculated using the calculation formula for the enthalpy of the low-pressure refrigerant; if the refrigerant at the exhaust port is a high-pressure refrigerant, the exhaust enthalpy is calculated using the calculation formula for the enthalpy of the high-pressure refrigerant; wherein the pressure in the formula is the exhaust pressure, and the superheat in the formula is obtained by calculating the exhaust temperature.

[0066] Furthermore, in S220, the suction enthalpy is calculated and determined based on the suction pressure and the suction temperature. If the refrigerant at the suction port is a low-pressure refrigerant, the suction enthalpy is calculated using the calculation formula for the enthalpy of the low-pressure refrigerant; if the refrigerant at the suction port is a high-pressure refrigerant, the suction enthalpy is calculated using the calculation formula for the enthalpy of the high-pressure refrigerant; wherein the pressure in the formula is the suction pressure, and the superheat in the formula is obtained by calculating the suction temperature.

[0067] It can be understood that the enthalpy change rate calculated by the method of this embodiment can accurately reflect the actual working conditions of the compressor. At the same time, there is no need to use complex formulas to calculate the refrigerant entropy, and it also avoids problems such as increasing the microcontroller capacity of the air-conditioning controller and extending the control logic development cycle.

[0068] Furthermore, in a specific embodiment, S300 includes:

[0069] S310: Calculate and determine the difference between the enthalpy change rate and the reference enthalpy change rate;

[0070] S320: When the difference is greater than or equal to the first threshold, it is determined that the compressor performance has deteriorated.

[0071] It should be noted that the reference enthalpy change rate is the enthalpy change rate before the compressor performance deteriorates, which can be obtained by conducting experimental tests in advance or by conducting tests after the air conditioner is installed.

[0072] Preferably, the first threshold is 0.5.

[0073] For example, the baseline enthalpy change rate is 1.71 kJ / (kg・bar). When the detected suction pressure is 8.2 bar, the suction temperature is 11°C, the discharge pressure is 30.5 bar, and the discharge temperature is 91°C, the suction enthalpy is 430.3 kJ / kg, and the discharge enthalpy is 483.9 kJ / kg. The calculated enthalpy change rate is 2.40 kJ / (kg・bar). The difference between the enthalpy change rate and the baseline enthalpy change rate is 0.69≧0.5, indicating that the compressor is experiencing performance degradation.

[0074] It can be understood that by comparing the difference between the enthalpy change rate and the reference enthalpy change rate with the first threshold, it can be accurately determined whether the compressor has a performance degradation problem.

[0075] Furthermore, in a specific embodiment, S300 further includes:

[0076] S330: When the difference is greater than or equal to the second threshold and less than the first threshold, the number n is increased by 1, and after the first time threshold, steps S100 to S300 are performed again;

[0077] S340: If the number n reaches a third threshold within the second time threshold, it is determined that the compressor has performance degradation;

[0078] The first threshold is greater than the second threshold, the second time threshold is greater than the first time threshold, and the initial value of n is 0.

[0079] Preferably, the second threshold value is 0.3; the third threshold value is 4; the first time threshold value is 5 minutes; and the second time threshold value is 60 minutes.

[0080] For example, when the difference between the enthalpy change rate and the baseline enthalpy change rate is greater than or equal to 0.3 and less than 0.5, the enthalpy change rate is detected again after 5 minutes. If the enthalpy change rate reaches a difference greater than or equal to 0.3 and less than 0.5 four times within 60 minutes, it is determined that the compressor has performance degradation.

[0081] It can be understood that the solution of this embodiment can accurately determine whether the compressor has a performance degradation problem.

[0082] Furthermore, in a specific embodiment, before S100, the control method further includes:

[0083] S50: Control the air conditioner to operate under rated operating conditions, and obtain a test exhaust pressure, a test exhaust temperature, a test suction pressure, and a test suction temperature;

[0084] S60: Calculate and determine a reference enthalpy change rate according to the test exhaust pressure, the test exhaust temperature, the test intake pressure, and the test intake temperature.

[0085] In this embodiment, the reference enthalpy change rate is determined by detection, calculation and operation when the air conditioner is operating under rated operating conditions.

[0086] For example, when the air conditioner is operating under rated operating conditions, the intake pressure is 8.0 bar, the intake temperature is 13°C, the exhaust pressure is 30.0 bar, and the exhaust temperature is 80°C. At this time, the calculated intake enthalpy is 433.0 kJ / kg and the exhaust enthalpy is 470.6 kJ / kg. The base enthalpy change rate can be calculated as 1.71 kJ / (kg・bar).

[0087] It can be understood that the method of this embodiment can accurately obtain the baseline enthalpy change rate, and the control method of the present invention subsequently determines whether the compressor has performance degradation by comparing the enthalpy change rate with the baseline enthalpy change rate. The method of this embodiment improves the accuracy and reliability of the control method of the present invention.

[0088] Furthermore, in a specific embodiment, before S100, the control method further includes:

[0089] obtaining a plurality of initial enthalpy change rates of the air conditioner at a plurality of different compression ratios;

[0090] Determining a fitting formula between the compression ratio and the initial enthalpy change rate according to a plurality of compression ratios and a plurality of initial enthalpy change rates;

[0091] The control method also includes:

[0092] S250: Obtaining the current compression ratio of the compressor;

[0093] S260: Determine a reference enthalpy change rate based on the current compression ratio and a fitting formula.

[0094] It should be noted that since the condensing temperature and evaporating temperature will change with changes in the outdoor temperature and the operating capacity of the indoor unit, the compression ratio will also change, and if the compression ratio changes, the enthalpy change rate will also change. If the compression ratio changes, the amount of high-pressure gaseous refrigerant leaking from the outlet side of the compression chamber inside the compressor to the inlet side of the compression chamber changes. For example, if the compression ratio increases, the pressure difference between the outlet side and the inlet side of the compression chamber increases, so the high-pressure gaseous refrigerant leaking from the outlet side of the compression chamber to the inlet side of the compression chamber increases. The leaked high-pressure gaseous refrigerant is in a high-temperature state, so the temperature of the gaseous refrigerant on the inlet side of the compressor rises, and the exhaust temperature on the outlet side of the compression chamber also rises, so the exhaust enthalpy increases, and the calculated enthalpy change rate also increases. See Figure 3 , if the compression ratio increases, the enthalpy change rate will also increase.

[0095] If the outdoor temperature and the operating capacity of the indoor unit change, the compression ratio will also change, and therefore the enthalpy change rate will also change. Consequently, the accuracy of the control method of the present invention in determining compressor performance degradation will also decrease. In this embodiment, to improve the accuracy of determining compressor performance degradation, the reference enthalpy change rate is changed according to the compression ratio to determine the compressor performance degradation.

[0096] Optionally, regarding the method for setting the reference enthalpy change rate, a corresponding enthalpy change rate table may be prepared according to the divided compression ratios within a specified range, or a fitting formula corresponding to the compression ratio may be prepared.

[0097] For example, the Figure 4 The approximate curve shown above yields a quadratic or higher fitting formula, which is used to calculate the base enthalpy change rate based on the compression ratio. Enthalpy change rate [kJ / (kg・bar)] = -0.035 × compression ratio² + 0.599 × compression ratio - 0.557.

[0098] It is understandable that when the outdoor temperature and the operating capacity of the indoor unit change, the compression ratio will also change, and the enthalpy change rate will also change. The method of this embodiment takes this situation into consideration, effectively improving the accuracy of determining compressor performance degradation.

[0099] Furthermore, in a specific embodiment, the compression ratio and the base enthalpy change rate are positively correlated.

[0100] Furthermore, this embodiment provides a control device for an air conditioner, which includes: a detection module, which is used to obtain the exhaust pressure, exhaust temperature, intake pressure and intake temperature of the compressor; a calculation module, which is used to calculate and determine the enthalpy change rate based on the exhaust pressure, exhaust temperature, intake pressure and intake temperature; and a judgment module, which is used to judge whether the compressor has performance degradation based on the enthalpy change rate.

[0101] The control device of the air conditioner in the embodiment of the present invention implements the steps of the control method of the air conditioner in any embodiment of the present invention, and thus has all the beneficial effects of the control method of the air conditioner in any embodiment of the present invention, which will not be repeated here.

[0102] Furthermore, this embodiment provides an air conditioner, which 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 steps of the air conditioner control method as in any embodiment of the present invention are implemented.

[0103] The air conditioner of the embodiment of the present invention implements the steps of the control method of the air conditioner of any embodiment of the present invention, and thus has all the beneficial effects of the control method of the air conditioner of any embodiment of the present invention, which will not be repeated here.

[0104] Furthermore, this embodiment provides a readable storage medium, which stores a program or instruction. When the program or instruction is executed by a processor, the steps of the air conditioner control method according to any embodiment of the present invention are implemented.

[0105] The readable storage medium of the embodiment of the present invention implements the steps of the air conditioner control method of any embodiment of the present invention, and thus has all the beneficial effects of the air conditioner control method of any embodiment of the present invention, which will not be repeated here.

[0106] Although the present invention is disclosed as 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 scope of protection of the present invention should be based on the scope defined by the claims.

Claims

1. A method for controlling an air conditioner, characterized in that: The control method comprises: S100: Obtaining the exhaust pressure, exhaust temperature, suction pressure, and suction temperature of the compressor; S200: Calculating and determining an enthalpy change rate according to the exhaust pressure, the exhaust temperature, the intake pressure, and the intake temperature; S300: Determining whether the compressor has performance degradation according to the enthalpy change rate; The S300 includes: S310: Calculating and determining a difference between the enthalpy change rate and a reference enthalpy change rate; S320: When the difference is greater than or equal to a first threshold, determining that performance degradation of the compressor occurs; Before S100, the control method further includes: obtaining a plurality of initial enthalpy change rates of the air conditioner at a plurality of different compression ratios; Determining a fitting formula between the compression ratio and the initial enthalpy change rate according to the plurality of compression ratios and the plurality of initial enthalpy change rates; The control method further comprises: S250: Obtaining a current compression ratio of the compressor; S260: Determine the base enthalpy change rate according to the current compression ratio and the fitting formula.

2. The control method according to claim 1, characterized in that: The S200 includes: S210: Calculating and determining exhaust enthalpy based on the exhaust pressure and exhaust temperature; S220: Calculate and determine the intake enthalpy based on the intake pressure and the intake temperature; S230: The enthalpy change rate=(the exhaust enthalpy-the intake enthalpy) / (the exhaust pressure-the intake pressure).

3. The control method according to claim 1, wherein: The S300 further includes: S330: When the difference is greater than or equal to the second threshold and less than the first threshold, the number n is increased by 1, and after the first time threshold, steps S100 to S300 are performed again; S340: If the number n reaches a third threshold within the second time threshold, determining that the compressor has performance degradation; The first threshold is greater than the second threshold, the second time threshold is greater than the first time threshold, and the initial value of n is 0.

4. The control method according to claim 1, wherein: Before S100, the control method further includes: S50: controlling the air conditioner to operate under rated operating conditions, and obtaining a test exhaust pressure, a test exhaust temperature, a test suction pressure, and a test suction temperature; S60: Calculate and determine the reference enthalpy change rate according to the test exhaust pressure, the test exhaust temperature, the test intake pressure, and the test intake temperature.

5. The control method according to claim 1, characterized in that: The compression ratio and the base enthalpy change rate are positively correlated.

6. A control device for an air conditioner, characterized in that: The control device comprises: A detection module, the detection module is used to obtain the exhaust pressure, exhaust temperature, suction pressure and suction temperature of the compressor; a calculation module, configured to calculate and determine an enthalpy change rate based on the exhaust pressure, the exhaust temperature, the intake pressure, and the intake temperature; A judgment module is used to judge whether the performance of the compressor has deteriorated according to the enthalpy change rate.

7. An air conditioner, characterized in that: The air conditioner includes: a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the control method according to any one of claims 1 to 5.

8. A readable storage medium, characterized in that: The readable storage medium stores a program or instruction, and when the program or instruction is executed by a processor, the steps of the control method according to any one of claims 1 to 5 are implemented.

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