CN115773564B - Air conditioner control method, system, circuit, equipment and storage medium - Google Patents

Air conditioner control method, system, circuit, equipment and storage medium Download PDF

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CN115773564B
CN115773564B CN202210726337.5A CN202210726337A CN115773564B CN 115773564 B CN115773564 B CN 115773564B CN 202210726337 A CN202210726337 A CN 202210726337A CN 115773564 B CN115773564 B CN 115773564B
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temperature
power supply
air conditioner
communication
target
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CN115773564A (en
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梁尚
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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Abstract

The application relates to an air conditioner control method, an air conditioner control system, an air conditioner control circuit, an air conditioner control device and a storage medium, and relates to the technical field of air conditioners, wherein the air conditioner control method comprises the following steps: determining the target cavity temperature of the air conditioner, if the target cavity temperature exceeds a preset temperature threshold, determining the starting temperature of a switching power supply of the air conditioner, determining the target communication power supply voltage according to the starting temperature of the switching power supply and the target cavity temperature, and then adjusting the output voltage of a communication switching power supply of the air conditioner until the output voltage reaches the target communication power supply voltage, thereby solving the problem of communication faults of an indoor unit and an outdoor unit of the air conditioner caused by the attenuation of a CTR of an optocoupler and improving the communication stability of the air conditioner.

Description

Air conditioner control method, system, circuit, equipment and storage medium
Technical Field
The present application relates to the field of air conditioning technologies, and in particular, to an air conditioning control method, system, circuit, device, and storage medium.
Background
At present, most air conditioners in the market are composed of an outdoor unit and an indoor unit, and the indoor unit need to communicate with each other to realize complex functions. For example, variable frequency air conditioners require changing the operating frequency of a compressor of an outdoor unit according to different operating conditions, which requires frequent communication between an indoor unit and the outdoor unit.
In a specific implementation, the indoor unit and the outdoor unit are far apart from each other and have a plurality of interferences. In order to ensure reliable communication between the indoor unit and the outdoor unit, the communication mode between the indoor unit and the outdoor unit is usually realized by adopting a three-wire system. Specifically, the connection line between the indoor unit and the outdoor unit includes: zero line, live wire and communication line to this constitutes half duplex asynchronous serial port communication, and this kind of communication mode safe and reliable, with low costs.
In order to achieve the purpose of isolation protection, a photoelectric coupler is usually adopted in a communication current loop of the air conditioner. However, the current transmission ratio (Current Transfer Ration, CTR) of the photoelectric coupler gradually decays along with the increase of the service time and the temperature rise, if the CTR of the photoelectric coupler is too small, the function of the photoelectric coupler in a circuit is invalid, the communication of the air conditioner internal and external units is affected, and the communication fault problem of the air conditioner internal and external units exists.
Disclosure of Invention
In view of the above, the present application provides an air conditioner control method, system, circuit, device and storage medium, so as to solve the problem of communication failure between the indoor unit and the outdoor unit of the air conditioner caused by the attenuation of the CTR of the optocoupler, and improve the stability of air conditioner communication.
In a first aspect, the present application provides an air conditioner control method, including:
Determining a target cavity temperature of an air conditioner;
if the temperature of the target cavity exceeds a preset temperature threshold, determining the starting temperature of a switching power supply of the air conditioner;
Determining a target communication power supply voltage according to the starting temperature of the switching power supply and the target cavity temperature;
And adjusting the output voltage of the communication switching power supply of the air conditioner until the output voltage reaches the target communication power supply voltage.
Optionally, determining the target cavity temperature of the air conditioner includes:
After the air conditioner is started, determining the working state of the air conditioner;
if the working state is an air conditioner refrigerating state, acquiring temperature sampling information of an air conditioner external unit;
and determining the temperature of the target cavity according to the temperature sampling information.
Optionally, determining the starting temperature of the switching power supply of the air conditioner includes:
acquiring the using time length information and the optical coupler preset information of the air conditioner, wherein the optical coupler preset information comprises optical coupler attenuation coefficient information and preset starting temperature corresponding to the communication switching power supply;
And determining the starting temperature of the switching power supply according to the optocoupler attenuation coefficient information, the using time length information and the preset starting temperature.
Optionally, determining the switching power supply start temperature according to the optocoupler attenuation coefficient information, the time length of use information and the preset start temperature includes:
Determining an attenuation temperature based on the optocoupler attenuation coefficient information and the use time length information;
and determining the starting temperature of the switching power supply based on the attenuation temperature and the preset starting temperature.
Optionally, determining the target communication power supply voltage according to the switching power supply start temperature and the target cavity temperature includes:
determining a target temperature difference based on the switching power supply start-up temperature and a target cavity temperature;
and determining the target communication power supply voltage according to the target temperature difference and the initial output voltage corresponding to the communication switching power supply.
Optionally, determining the target communication power supply voltage according to the target temperature difference and the initial output voltage corresponding to the communication switch power supply includes:
determining an adjustment voltage based on the target temperature difference and a preset optocoupler temperature rise coefficient of the air conditioner;
And determining the target communication power supply voltage based on the adjustment voltage and the initial output voltage.
In a second aspect, the present application provides an air conditioner control system, comprising:
the target cavity temperature determining module is used for determining the target cavity temperature of the air conditioner;
The power supply starting temperature determining module is used for determining the starting temperature of the switching power supply of the air conditioner when the temperature of the target cavity exceeds a preset temperature threshold;
The communication power supply voltage determining module is used for determining a target communication power supply voltage according to the starting temperature of the switching power supply and the target cavity temperature;
and the output voltage adjusting module is used for adjusting the output voltage of the communication switching power supply of the air conditioner until the output voltage reaches the target communication power supply voltage.
In a third aspect, the present application provides an air conditioner control circuit comprising: the air conditioner comprises a temperature sampling unit, a communication switching power supply and an air conditioner external unit control unit;
The first end of the air conditioner external unit control unit is electrically connected with the temperature sampling unit, and the second end of the air conditioner external unit control unit is electrically connected with the control end of the communication switch power supply;
The air conditioner external unit control unit is used for determining a target cavity temperature according to the temperature sampling information detected by the temperature sampling unit, determining the starting temperature of the switching power supply when the target cavity temperature exceeds a preset temperature threshold, and adjusting the output voltage of the communication switching power supply according to the starting temperature of the switching power supply and the target cavity temperature until the output voltage reaches a target communication power supply voltage.
In a fourth aspect, an air conditioning apparatus is provided, including a processor, a communication interface, a memory, and a communication bus, where the processor, the communication interface, and the memory complete communication with each other through the communication bus;
A memory for storing a computer program;
And the processor is used for realizing the steps of the air conditioner control method according to any one of the embodiments of the first aspect when executing the program stored in the memory.
In a fifth aspect, there is provided an air conditioning apparatus comprising the air conditioning control circuit as described in the third aspect.
In a sixth aspect, there is provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the air conditioner control method according to any one of the embodiments of the first aspect.
According to the embodiment of the application, the target cavity temperature of the air conditioner is determined, when the target cavity temperature exceeds the preset temperature threshold, the starting temperature of the switching power supply of the air conditioner is determined, then the target communication power supply voltage is determined according to the starting temperature of the switching power supply and the target cavity temperature, and the output voltage of the communication switching power supply of the air conditioner is adjusted until the output voltage reaches the target communication power supply voltage, so that the problem of communication faults of the indoor unit and the outdoor unit of the air conditioner caused by CTR attenuation of an optocoupler is solved, and the stability of air conditioner communication is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a schematic flow chart of an air conditioner control method according to an embodiment of the present application;
FIG. 2 is a flow chart of steps of an air conditioner control method according to an alternative embodiment of the present application;
fig. 3 is a schematic structural diagram of an air conditioner control system according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of an air conditioner control circuit according to an embodiment of the present application;
Fig. 5 is a schematic diagram of an air conditioner control circuit according to an embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In order to realize the refrigeration of the indoor unit of the air conditioner, the outdoor unit of the air conditioner generally needs to dissipate heat, and the temperature of the cavity where the control main board of the outdoor unit of the air conditioner is located is increased under the outdoor high-temperature environment, so that the temperature of the cavity is increased. However, when the temperature increases, communication failure due to attenuation of the optocoupler CTR is easily caused. Specifically, the optocoupler is abbreviated as an optocoupler, and generally comprises a phototriode and a light emitting diode, and the output current of the optocoupler triode is controlled by controlling the intensity of light emitted by the diode through an input end, so that electrical isolation is realized. The CTR of the optocoupler is the minimum value of the ratio of the output current (IC) at the secondary side of the optocoupler to the input current (IF) at the primary side of the optocoupler, as shown in fig. 1, as the input current IF increases, the CTR gradually approaches the maximum value, but then the CTR gradually decreases. In addition, the CTR of the optocoupler may gradually decay with increasing usage time. If CTR of the optocoupler is too small, the saturation current value of the phototriode in the optocoupler is too small, and finally the micro-processing (Microcontroller Unit, MCU) of the air conditioner outdoor unit cannot identify the electric signal, so that communication cannot be completed, and communication faults of the indoor unit and the outdoor unit exist in the air conditioner.
It should be noted that, the higher the temperature, the higher the dependence of the user degree air conditioner and the requirement on the performance of the air conditioner, so it is very necessary to ensure the stable operation of the air conditioner under the high temperature working condition.
One of the core ideas of the application is to provide a new air conditioner control method, which determines the starting temperature of a switching power supply of an air conditioner by determining the target cavity temperature of the air conditioner and determining the target communication power supply voltage according to the starting temperature of the switching power supply and the target cavity temperature when the target cavity temperature exceeds a preset temperature threshold value, and then adjusts the output voltage of the communication switching power supply of the air conditioner until the output voltage reaches the target communication power supply voltage, thereby solving the problem of communication failure caused by the attenuation of an optocoupler CTR in a communication loop of an air conditioner outdoor unit under a high-temperature environment and improving the stability of air conditioner communication.
For the purpose of facilitating an understanding of the embodiments of the present application, reference will now be made to the following description of specific embodiments, taken in conjunction with the accompanying drawings, which are not intended to limit the embodiments of the application.
Referring to fig. 2, a flowchart of steps of an air conditioner control method according to an embodiment of the present application is shown.
Specifically, the air conditioner control method provided by the application specifically comprises the following steps:
step 110, determining a target cavity temperature of an air conditioner;
the target cavity temperature may refer to a cavity temperature detected by an external air conditioner, for example, may refer to a temperature in a cavity where a control main board detected by the external air conditioner is located. For example, temperature detection is performed through a temperature sampling unit arranged on an external air conditioner, and temperature sampling information detected by the temperature sampling unit can be obtained through an external air conditioner MCU, so that the target cavity temperature can be determined based on the temperature sampling information, and whether the target cavity temperature exceeds a preset temperature threshold can be judged, and step 120 is performed when the target cavity temperature exceeds the preset temperature threshold, so that the problem of communication faults of the internal air conditioner and the external air conditioner caused by CTR attenuation of an optical coupler is solved, and the stability of air conditioner communication is improved.
Step 120, if the target cavity temperature exceeds a preset temperature threshold, determining the starting temperature of the switching power supply of the air conditioner;
The starting temperature of the switching power supply of the air conditioner can refer to the current starting temperature of the switching power supply of the air conditioner, for example, the current actual starting temperature of the communication switching power supply of the air conditioner; the communication switch power switch can be a switch power supply in an air conditioner communication current loop, and can be particularly used for providing working power supply voltage for a phototriode in an optocoupler, so that the phototriode can output the secondary side output current IC of the optocoupler. Specifically, the optocoupler CTR is attenuated along with the increase of the service time of the air conditioner optocoupler, so that the starting temperature of the switching power supply is gradually reduced when the service time is too long. When the temperature of the target cavity exceeds the preset temperature threshold, the embodiment of the application can determine the starting temperature of the switching power supply according to the using time of the optocoupler, so that the target communication power supply voltage can be determined according to the starting temperature of the switching power supply and the temperature of the target cavity later, namely, the step 130 is executed. For example, in combination with the above example, when the target cavity body temperature exceeds the preset temperature threshold, the MCU may acquire the usage time length information of the air conditioner, so as to determine the current switching power supply starting temperature of the air conditioner according to the relationship between the usage time length information and the starting temperature of the switching power supply.
Step 130, determining a target communication power supply voltage according to the starting temperature of the switching power supply and the target cavity temperature;
The target communication power supply voltage can refer to output voltage required by a communication switching power supply of the air conditioner, so that the air conditioner can perform communication between indoor and outdoor units based on the target communication power supply voltage. Specifically, after the starting temperature of the switching power supply is determined, the starting temperature of the switching power supply and the target cavity temperature can be compared to determine a temperature difference between the starting temperature of the switching power supply and the target cavity temperature, and then the voltage required to be output by the switching power supply can be determined as the target communication power supply voltage according to the relation between the input voltage of the communication switching power supply and the target cavity temperature based on the temperature difference.
And 140, adjusting the output voltage of the communication switching power supply of the air conditioner until the output voltage reaches the target communication power supply voltage.
Specifically, after the target communication power supply voltage is determined, the embodiment of the application can adjust the output voltage of the air-conditioning communication switching power supply based on the target communication power supply voltage, and the adjustment of the output voltage is stopped until the adjusted output voltage reaches the target communication power supply voltage, so that the current in an air-conditioning communication loop can be increased, and the stability of air-conditioning communication in a warm environment is ensured. For example, after determining the target communication power supply voltage, the target communication power supply voltage may be compared with the current output voltage of the communication switching power supply to determine whether the current output voltage of the communication switching power supply reaches the target communication power supply voltage; if the current output voltage of the communication switch power supply does not reach the target communication power supply voltage, if the current output voltage of the communication switch power supply is lower than the target communication power supply voltage, the output voltage of the communication switch power supply can be gradually adjusted according to the target communication power supply voltage until the output voltage of the communication switch power supply reaches the target communication power supply voltage, and the adjustment of the output voltage is stopped, so that the current in an air conditioner communication loop can be increased, the problem that the MCU cannot identify communication faults caused by electric signals due to too small current in the air conditioner communication loop is avoided, namely the problem of communication faults caused by the attenuation of an optocoupler CTR in the communication loop of an air conditioner external unit in a high-temperature environment is solved, and the stability of air conditioner communication is improved.
In summary, the embodiment of the application determines the starting temperature of the switching power supply of the air conditioner by determining the target cavity temperature of the air conditioner and determining the target communication power supply voltage according to the starting temperature of the switching power supply and the target cavity temperature when the target cavity temperature exceeds the preset temperature threshold, so that the output voltage of the communication switching power supply of the air conditioner can be adjusted according to the target communication power supply voltage until the output voltage reaches the target communication power supply voltage, further the problem of communication faults of the internal and external units of the air conditioner caused by CTR attenuation of an optocoupler is solved, and the communication stability of the air conditioner is improved.
In an optional implementation manner, after the air conditioner is started, the working state of the air conditioner can be determined to obtain temperature sampling information of an external machine of the air conditioner when the working state of the air conditioner is an air conditioner refrigerating state, so that the temperature of the target cavity can be determined according to the temperature sampling information. Optionally, based on the foregoing embodiment, the determining, according to the embodiment of the present application, the target cavity temperature of the air conditioner may specifically include: after the air conditioner is started, determining the working state of the air conditioner; if the working state is the air conditioner refrigerating state, acquiring temperature sampling information of an air conditioner external unit; and determining the temperature of the target cavity according to the temperature sampling information. The working state of the air conditioner can comprise a refrigerating state and a heating state of the air conditioner; the temperature sampling information may refer to temperature information detected by temperature sampling, for example, temperature information obtained by sampling by a temperature sampling unit. It should be noted that, the temperature sampling unit can detect the temperature in the cavity where the air conditioner external unit control main board is located, and can transmit the detected temperature information to the air conditioner external unit control main board as temperature sampling information, so that the MCU on the air conditioner external unit control main board can determine the target cavity temperature according to the temperature sampling information, and then can determine whether to adjust the output voltage of the communication switching power supply of the air conditioner by judging whether the target cavity temperature exceeds a preset temperature threshold value, thereby solving the problem of communication failure of the air conditioner external unit caused by CTR attenuation of an optical coupler and improving the stability of air conditioner communication.
Therefore, after the air conditioner is detected to be started, the working state of the air conditioner can be determined through the MCU, so that whether the temperature sampling information of the air conditioner external unit needs to be acquired or not is determined according to the working state of the air conditioner; when the air conditioner is in a refrigerating state, namely, when the working state of the air conditioner is in the refrigerating state, the temperature of the target cavity where the control main board of the air conditioner external unit is located can be detected through the temperature sampling unit to obtain temperature sampling information, then the temperature of the target cavity can be determined according to the temperature sampling information, and when the air conditioner is in a heating state, namely, when the working state of the air conditioner is in the air conditioner refrigerating state, the temperature of the target cavity of the air conditioner can be determined without according to the temperature sampling information, such as the temperature sampling information detected by the temperature sampling unit can be ignored, and the embodiment of the application is not limited.
As an example of the embodiment of the application, under the condition that the working state of the air conditioner is divided into a refrigerating state and a heating state, as the CTR of the air conditioner optocoupler is attenuated along with the rise of the temperature, when the indoor temperature and the outdoor temperature are lower, the air conditioner is in the heating state, and the temperature of a target cavity where the MCU of the air conditioner external unit is located is also lower, the CTR of the air conditioner optocoupler is not attenuated due to the rise of the temperature, so that the cavity where the MCU of the air conditioner external unit is located can not be subjected to temperature detection; when the indoor temperature and the outdoor temperature are higher, the air conditioner is in a refrigerating state, and CTR of an optical coupler of the air conditioner is attenuated possibly due to temperature rise, so that after the air conditioner is started, the working state of the air conditioner can be determined through the MCU, and when the working state of the air conditioner is in the refrigerating state, the temperature in a cavity where the MCU of the air conditioner is located is detected through the temperature sampling unit, and temperature sampling information is obtained. After the temperature sampling information is obtained, the temperature of the target cavity can be determined through the MCU of the air conditioner external unit according to the temperature sampling information, so that the starting temperature of the switching power supply of the air conditioner is determined when the temperature of the target cavity exceeds a preset temperature threshold value, then the target communication power supply voltage is determined according to the starting temperature of the switching power supply and the temperature of the target cavity, and the output voltage of the communication switching power supply of the air conditioner is adjusted according to the target communication power supply voltage, so that the problem of communication faults of the air conditioner external unit and the air conditioner external unit caused by CTR attenuation of an optical coupler is solved, and the stability of air conditioner communication is improved.
Further, although the larger the input current of the optocoupler is, the larger the CTR is, in practical engineering application, the larger the input current at the high voltage side is, the larger the power consumption is, for example, the heating amount of the current limiting resistor is larger, for example, the power voltage in the air conditioner communication current loop is generally larger than 50V, the current limiting resistor is generally larger, the higher the power consumption is, the larger the temperature of the resistor has larger influence on the resistance value of the resistor, the aging speed of the resistor is accelerated when the resistor works in a long-time high-temperature environment, and the service life of the resistor is reduced when the resistance value is changed; while the operating supply voltage on the low side is typically relatively small, such as +5v or +3.3v for the low side, the low side resistor has relatively small power and generates relatively small heat due to the relatively small voltage across each resistor on the low side, despite the relatively large operating current in the low side circuit.
In consideration of the fact that the voltage difference between high voltage and low voltage in the air conditioner communication current loop is large, electric isolation can be achieved through the optocoupler device, and the value of the optocoupler input current IF in the communication current loop cannot be excessively large, therefore the embodiment of the application can selectively increase the current in the air conditioner communication loop by increasing the output voltage of the switching power supply in the air conditioner communication current loop, so that normal operation of communication is ensured, and the stability of air conditioner communication is improved.
Specifically, after the air conditioner is started, the embodiment of the application determines the target cavity temperature of the air conditioner, then judges whether the target cavity temperature exceeds the preset temperature threshold, and determines the using time length information and the optocoupler preset information of the air conditioner when the target cavity temperature exceeds the preset temperature threshold so as to determine the starting temperature of the switching power supply of the air conditioner according to the using time length information and the optocoupler preset information. The preset information of the optical coupler may include various information set in advance according to the performance of the optical coupler, for example, the information may include attenuation coefficient information of the optical coupler, a preset starting temperature corresponding to the communication switching power supply, etc., which is not particularly limited in the embodiment of the present application. Optionally, the determining the starting temperature of the switching power supply of the air conditioner according to the embodiment of the present application specifically may include: acquiring service time information and optocoupler preset information of an air conditioner, wherein the optocoupler preset information comprises optocoupler attenuation coefficient information and preset starting temperature corresponding to a communication switching power supply; and determining the starting temperature of the switching power supply according to the attenuation coefficient information of the optocoupler, the using time length information and the preset starting temperature. The using time length information of the air conditioner can be used for determining the using time length of the air conditioner, for example, the actual using time length of the air conditioner can be determined as Y according to the using time length information, and the time unit of the time length Y can be the year; the optical coupler attenuation coefficient information can comprise various coefficient information related to light source attenuation, such as a temperature rise coefficient k of output voltage of a communication switch power supply, a starting temperature attenuation coefficient h of the communication switch power supply and the like, and the implementation of the application is not particularly limited; the preset starting temperature corresponding to the communication switch power supply may refer to an initial starting temperature preset for the communication switch power supply of the air conditioner, for example, the preset starting temperature corresponding to the communication switch power supply may be preset to be T D according to the brand of the optocoupler, and the unit of the preset starting temperature T D may be celsius degrees.
In an optional implementation manner, the embodiment of the application can calculate according to the using time length information of the air conditioner and the attenuation coefficient information of the optical coupler, determine the attenuation temperature, and determine the current starting temperature of the communication switch power supply according to the attenuation temperature and the preset starting temperature corresponding to the communication switch power supply. Further, the embodiment of the application determines the starting temperature of the switching power supply according to the information of the attenuation coefficient of the optocoupler, the information of the service time and the preset starting temperature, and specifically may include: determining an attenuation temperature based on the optical coupler attenuation coefficient information and the using time length information; and determining the starting temperature of the switching power supply based on the attenuation temperature and the preset starting temperature. The attenuation temperature may refer to a temperature attenuated by the communication switching power supply when the communication switching power supply is started after being used for a period of time, and specifically may refer to a temperature variation value attenuated by the current actual starting temperature of the communication switching power supply relative to a preset starting temperature. According to the embodiment of the application, the temperature change value can be determined according to the information of the air conditioner in use and the attenuation coefficient information of the optical coupler, and the temperature change value can be determined as the attenuation temperature, so that the starting temperature of the switching power supply can be determined according to the attenuation temperature and the corresponding preset starting temperature of the communication switching power supply.
Specifically, after the use time length information of the air conditioner and the preset information of the optical coupler are obtained, the information of the attenuation coefficient of the optical coupler can be extracted from the preset information of the optical coupler, so that the attenuation temperature is determined according to the starting temperature attenuation coefficient h of the communication switching power supply in the information of the attenuation coefficient of the optical coupler and the use time length information of the air conditioner, for example, the product of the starting temperature attenuation coefficient h and the use time length parameter Y in the use time length information can be calculated, the product hY of the starting temperature attenuation coefficient and the use time length can be determined as the attenuation temperature, and then the starting temperature of the switching power supply can be determined according to the attenuation temperature and the corresponding preset starting temperature of the communication switching power supply, for example, the difference between the preset starting temperature and the attenuation temperature can be determined according to the attenuation temperature and the preset starting temperature, so that the difference between the preset starting temperature and the attenuation temperature is determined as the starting temperature of the switching power supply.
Referring to fig. 2, a flowchart illustrating steps of an air conditioner control method according to an alternative embodiment of the present application is shown. Specifically, the air conditioner control method provided by the embodiment of the application specifically includes the following steps:
step 210, after the air conditioner is started, determining the working state of the air conditioner;
step 220, if the working state is the air conditioner refrigerating state, acquiring temperature sampling information of an air conditioner external unit;
step 230, determining the temperature of the target cavity according to the temperature sampling information;
For example, after the air conditioner is started, the working state of the air conditioner can be determined through an air conditioner external unit MCU; if the working state of the air conditioner is the air conditioner refrigerating state, the temperature of the cavity where the MCU of the main board of the external machine of the air conditioner is located can be detected through the temperature sampling unit to obtain temperature detection information, then the temperature sampling information can be processed through the MCU of the main board of the external machine of the air conditioner to determine the temperature of the target cavity, so as to determine whether the temperature of the target cavity exceeds a preset temperature threshold, and the step 204 can be executed when the temperature of the target cavity exceeds the preset temperature threshold.
Step 240, when the temperature of the target cavity exceeds a preset temperature threshold, acquiring the using time length information of the air conditioner and the preset information of the optical coupler;
The optical coupler preset information comprises optical coupler attenuation coefficient information and preset starting temperature corresponding to the communication switching power supply.
Step 250, determining an attenuation temperature based on the optocoupler attenuation coefficient information and the use time length information;
Step 260, determining the starting temperature of the switching power supply based on the attenuation temperature and the preset starting temperature;
Specifically, after the use time length information and the preset information of the optical coupler of the air conditioner are obtained, the optical coupler attenuation coefficient information and the preset starting temperature corresponding to the communication switch power supply can be extracted from the preset information of the optical coupler, then the attenuation temperature can be determined by calculating according to the relation between the starting temperature and the use time length of the communication switch power supply based on the starting temperature attenuation coefficient h of the communication switch power supply in the attenuation coefficient information of the optical coupler and the use time length of the air conditioner, and the temperature difference between the preset starting temperature and the attenuation temperature can be determined based on the attenuation temperature and the preset starting temperature to serve as the starting temperature of the switch power supply, so that the target communication power supply voltage can be determined according to the starting temperature and the target cavity temperature of the switch power supply later, namely, step 270 is executed.
Step 270, determining a target communication power supply voltage according to the switching power supply starting temperature and the target cavity temperature;
Optionally, the determining the target communication power supply voltage according to the starting temperature of the switching power supply and the target cavity temperature according to the embodiment of the application specifically may include: determining a target temperature difference based on the switching power supply start-up temperature and the target cavity temperature; and determining the target communication power supply voltage according to the target temperature difference and the initial output voltage corresponding to the communication switch power supply. Specifically, after the starting temperature of the switching power supply is obtained, the embodiment of the application can calculate according to the starting temperature of the switching power supply and the target cavity temperature, determine the temperature difference between the starting temperature of the switching power supply and the target cavity temperature, and take the temperature difference as the target temperature difference, calculate according to the initial output voltage corresponding to the target temperature difference and the communication switching power supply and according to the relation between the input voltage of the communication switching power supply and the target cavity temperature, and determine the target communication power supply voltage. The initial output voltage corresponding to the communication switching power supply may refer to an initial power supply off output voltage Uin preset for the communication switching power supply of the air conditioner before the air conditioner is started.
Step 280, adjusting the output voltage of the communication switch power supply of the air conditioner until the output voltage reaches the target communication power supply voltage.
In addition, in the case that the optocoupler attenuation coefficient information includes an optocoupler temperature rise coefficient preset by the air conditioner, after determining the target temperature difference, the embodiment of the application can determine the target communication power supply voltage based on the target temperature difference and the optocoupler temperature rise coefficient preset by the air conditioner, for example, the product between the target temperature difference and the optocoupler temperature rise coefficient preset by the air conditioner can be used as an adjustment voltage, the target communication power supply voltage can be determined based on the adjustment voltage and the initial output voltage, for example, the sum of the initial output voltage and the adjustment voltage can be used as the target communication power supply voltage, and then the output voltage of the communication switching power supply of the air conditioner can be adjusted according to the target communication power supply voltage, and the adjustment of the output voltage is stopped until the output voltage of the communication switching power supply reaches the target communication power supply voltage, so that the MCU of the main board of the external machine of the air conditioner can identify a point signal, the MCU of the external machine of the air conditioner can receive the communication signal, the MCU can be ensured to complete communication, and the communication stability between the indoor machine and the external machine of the air conditioner is improved. Optionally, the determining the target communication power supply voltage according to the target temperature difference and the initial output voltage corresponding to the communication switch power supply according to the embodiment of the present application specifically may include: determining an adjustment voltage based on the target temperature difference and a preset optocoupler temperature rise coefficient of the air conditioner; a target communication power supply voltage is determined based on the adjustment voltage and the initial output voltage. The preset optocoupler temperature rise coefficient of the air conditioner can refer to a temperature rise coefficient set for the output voltage of the communication switch power supply of the air conditioner based on the attenuation of the optocoupler CRT, and can be a temperature rise coefficient k of the output voltage of the communication switch power supply; the voltage adjustment can refer to a voltage change value determined based on a target temperature difference and a preset optocoupler temperature rise coefficient of the air conditioner, and can be specifically used for adjusting the output voltage of the communication switching power supply, so that the output voltage of the communication switching power supply can reach a target communication power supply voltage.
As an example of the embodiment of the application, the MCU of the air conditioner external unit may perform temperature detection through the temperature sampling unit, so as to use the information detected by the temperature sampling unit as temperature sampling information, then determine the target cavity temperature T according to the temperature sampling information detected by the temperature sampling unit, and adjust the output voltage of the communication switching power supply according to the switching power supply start temperature Ts and the target cavity temperature T when the target cavity temperature T exceeds a preset temperature threshold, until the output voltage reaches the target communication power supply voltage U.
Specifically, when the target cavity temperature T exceeds the preset temperature threshold, the in-use time length information of the air conditioner and the starting temperature attenuation coefficient h of the communication switching power supply can be obtained, so as to determine the attenuation temperature Yh according to the in-use time length parameter Y and the starting temperature attenuation coefficient h in the in-use time length information, for example, the attenuation temperature yh=y×h, then the temperature difference between the preset starting temperature and the attenuation temperature can be determined based on the preset starting temperature Td and the attenuation temperature Yh to serve as the starting temperature Ts of the switching power supply, that is, ts=td-y×h, then the target temperature difference (T-Ts) can be determined according to the starting temperature Ts of the switching power supply and the target cavity temperature T, then the temperature rise coefficient k of the output voltage of the communication switching power supply can be calculated based on the target temperature difference (T-Ts), the adjustment voltage is k× (T-Ts), then the adjustment voltage can be calculated based on the sum of the initial output voltage Uin and the adjustment voltage Uin, that is, the target communication power supply voltage u=uin+k× (T-communication) can be determined, and the current of the switching power supply can be prevented from being input to the communication power supply can be greatly, and the current of the air conditioner can be greatly increased, and the problem of the communication power supply can be prevented from being caused by the communication current.
In summary, the embodiment of the application determines the starting temperature of the switching power supply of the air conditioner by determining the target cavity temperature of the air conditioner and determining the target communication power supply voltage according to the starting temperature of the switching power supply and the target cavity temperature when the target cavity temperature exceeds the preset temperature threshold value, and adjusts the output voltage of the communication switching power supply of the air conditioner until the output voltage reaches the target communication power supply voltage, thereby solving the problem of communication faults of the indoor unit and the outdoor unit of the air conditioner caused by CTR attenuation of an optical coupler and improving the stability of communication of the air conditioner.
It should be noted that, for simplicity of description, the method embodiments are shown as a series of acts, but it should be understood by those skilled in the art that the embodiments are not limited by the order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments.
The embodiment of the application also provides an air conditioner control system, as shown in fig. 3, an air conditioner control system 300 provided by the embodiment of the application may include the following modules:
the target cavity temperature determination module 310: the method comprises the steps of determining a target cavity temperature of an air conditioner;
the power supply start-up temperature determination module 320: the method comprises the steps of determining the starting temperature of a switching power supply of an air conditioner when the temperature of a target cavity exceeds a preset temperature threshold;
Communication power supply voltage determination module 330: the power supply voltage determining module is used for determining a target communication power supply voltage according to the starting temperature of the switching power supply and the target cavity temperature;
The output voltage adjustment module 340: and the communication switch power supply is used for adjusting the output voltage of the communication switch power supply of the air conditioner until the output voltage reaches the target communication power supply voltage.
Optionally, the target cavity temperature determination module 310 may include the following sub-modules:
the working state determination submodule: the method is used for determining the working state of the air conditioner after the air conditioner is started;
temperature sampling information acquisition submodule: the temperature sampling information of the air conditioner external unit is obtained when the working state is an air conditioner refrigerating state;
The target cavity temperature determination submodule: and the temperature sampling module is used for determining the temperature of the target cavity according to the temperature sampling information.
Alternatively, the power-on temperature determination module 320 may include the following sub-modules:
An information acquisition sub-module: the method comprises the steps of acquiring service time information of the air conditioner and preset information of an optical coupler, wherein the preset information of the optical coupler comprises attenuation coefficient information of the optical coupler and preset starting temperature corresponding to the communication switching power supply;
Temperature determination submodule: and the switching power supply starting temperature is determined according to the optocoupler attenuation coefficient information, the using time length information and the preset starting temperature.
Optionally, the temperature determining submodule may be specifically configured to determine the attenuation temperature based on the optical coupler attenuation coefficient information and the in-use time length information; and determining the starting temperature of the switching power supply based on the attenuation temperature and the preset starting temperature.
Optionally, the communication power supply voltage determining module 330 may include the following sub-modules:
Target temperature difference determination submodule: the method comprises the steps of determining a target temperature difference based on the switching power supply starting temperature and a target cavity temperature;
communication power supply voltage determination submodule: and the communication power supply voltage determining module is used for determining the target communication power supply voltage according to the target temperature difference and the initial output voltage corresponding to the communication switching power supply.
Optionally, the communication power supply voltage determining submodule may be specifically configured to determine the adjustment voltage based on the target temperature difference and a preset optocoupler temperature rise coefficient of the air conditioner; and determining the target communication power supply voltage based on the adjustment voltage and the initial output voltage.
It should be noted that, the air conditioner control system provided above may execute the air conditioner control method provided by any embodiment of the present invention, and has the corresponding functions and beneficial effects of the execution method.
In the embodiment of the present application, the output voltage adjusting module 340 may adjust the output voltage of the communication switching power supply of the air conditioner based on the target communication power supply voltage. For example, the output end of the communication switch power supply may be connected to a power supply chip with adjustable voltage, so that the power supply chip is used as the output voltage adjusting module 340, so that the power supply chip can adjust the output voltage of the communication switch power supply of the air conditioner based on the target communication power supply voltage, thereby realizing control of the output voltage. For another example, in the case that the communication switching power supply in the air conditioner is a flyback switching power supply, a secondary diode of the flyback switching power supply can be changed into a metal oxide semiconductor (Metal Oxide Semiconductor FIELD EFFECT Transistor, MOS) field effect Transistor, so that when the temperature of the target cavity exceeds a preset temperature threshold, a pulse width modulation (Pulse Width Modulation, PWM) signal sent by the output voltage adjusting module 340 in the MCU controls an MOS Transistor in the communication switching power supply, so that the output voltage of the communication switching power supply can be adjusted, a PWM signal can be output to the MOS Transistor according to the target communication power supply voltage, and the output voltage of the communication switching power supply of the air conditioner can be adjusted based on the target communication power supply voltage, thereby realizing the adjustable output power supply.
Further, the target cavity temperature determining module 310, the power supply starting temperature determining module 320, the communication power supply voltage determining module 330, the output voltage adjusting module 340 and the like in the embodiment of the application can be integrated in the air conditioner external unit control main board, so that the air conditioner external unit control main board can determine the target cavity temperature through the temperature sampling unit, and can determine the starting temperature of the switching power supply when the target cavity temperature exceeds the preset temperature threshold value, and then determine the target communication power supply voltage according to the switching power supply starting temperature and the target cavity temperature, so as to adjust the output voltage of the communication switching power supply according to the target communication power supply voltage until the output voltage reaches the target communication power supply voltage, thereby solving the problem of communication faults between the air conditioner external unit and the air conditioner external unit caused by CTR attenuation of the optocoupler and improving the communication stability of the air conditioner.
Further, the embodiment of the present application further provides an air conditioner control circuit, as shown in fig. 4, an air conditioner control circuit 400 provided in the embodiment of the present application may include the following units: a temperature sampling unit 410, a communication switching power supply 420 and an air conditioner external unit control unit 430; wherein, a first end of the air conditioner external unit control unit 430 is electrically connected with the temperature sampling unit 410, and a second end of the air conditioner external unit control unit 430 is electrically connected with a control end of the communication switch power supply 420; the air conditioner external unit control unit 430 is configured to determine a target cavity temperature according to the temperature sampling information detected by the temperature sampling unit 410, determine a switching power supply start-up temperature when the target cavity temperature exceeds a preset temperature threshold, and adjust an output voltage of the communication switching power supply 420 according to the switching power supply start-up temperature and the target cavity temperature until the output voltage reaches a target communication power supply voltage.
As an example of the present application, after the air conditioner is started, the temperature sampling unit 410 may sample the temperature of the cavity where the MCU of the air conditioner external unit (i.e., the air conditioner outdoor unit) is located, obtain temperature sampling information, and may transmit the temperature sampling information to the air conditioner external unit control unit 430, so that the air conditioner external unit control unit 430 may determine the target cavity temperature according to the temperature sampling information detected by the temperature sampling unit 410, and may determine the switching power supply starting temperature when the target cavity temperature exceeds a preset temperature threshold, so as to determine the target communication power supply voltage according to the switching power supply starting temperature and the target cavity temperature, and then may adjust the output voltage of the communication switching power supply 420 according to the target communication power supply voltage through the air conditioner external unit control unit 430 until the output voltage reaches the target communication power supply voltage. For example, in the case that the MCU of the outdoor unit of the air conditioner is used as the control unit 430 of the outdoor unit of the air conditioner, as shown in fig. 5, after determining the target communication power supply voltage, the MCU of the outdoor unit of the air conditioner may send a control signal to the switching power supply in the communication switching power supply according to the target communication power supply voltage, so as to adjust the output voltage of the switching power supply to the target communication power supply voltage, thereby solving the problem of communication failure between the indoor unit and the outdoor unit of the air conditioner caused by the attenuation of the CTR of the optocoupler and improving the stability of air conditioner communication.
It should be noted that, the air conditioner control circuit provided in the embodiment of the present application may include, in addition to the temperature sampling unit 410, the communication switching power supply 420, and the air conditioner external unit control unit 430, other device units, for example, a first optical coupler OP-1, a second optical coupler OP-2, a third optical coupler OP-3, a fourth optical coupler OP-4, a diode D, a resistor R, and the like.
In a specific implementation, the air conditioner control circuit can be integrated in air conditioner equipment, so that when the temperature of a target cavity exceeds a preset temperature threshold, the air conditioner equipment can determine the starting temperature of a switching power supply, determine the voltage of a target communication power supply according to the starting temperature of the switching power supply and the temperature of the target cavity, and then adjust the output voltage of the communication switching power supply based on the voltage of the target communication power supply until the output voltage reaches the voltage of the target communication power supply, thereby solving the problem of communication failure caused by the attenuation of an optocoupler CT R in a communication loop of an air conditioner outdoor unit in a high-temperature environment and improving the stability of air conditioner communication. Further, the embodiment of the application also provides air conditioning equipment, which comprises the air conditioning control circuit.
In practical application, the power supply voltage in the communication current loop of the air conditioner is generally greater than 50V, and the partial pressure of the optocoupler and the diode in the communication current loop of the air conditioner is not higher than 5V when the optocoupler and the diode work; when the working current in the air conditioner communication current loop is 4mA, the power consumption of the resistor in the high-voltage side circuit of the optical coupler can reach 180mW, and the working power supply voltage of the low-voltage side is generally +5V or +3.3V, so that the maximum power consumption in the low-voltage side circuit of the optical coupler is 20mW when the working current is 4 mA. Because the voltage difference between the high voltage side and the low voltage side is large, an optocoupler device is required to be used for electric isolation.
Under the condition that the working current of the communication current loop is constant, the higher the temperature is, the smaller the current transmission ratio of the optocoupler is, the greater the possibility that the air conditioner MCU cannot receive signals is, and the more communication faults are likely to occur. For example, as shown in fig. 5, when the air conditioner external unit is an upper computer and the air conditioner internal unit (i.e., the air conditioner indoor unit) is a lower computer, the working environment temperature of the air conditioner external unit is relatively high, the working environment temperature of the air conditioner internal unit is relatively low, and when the first optical coupler OP-1 sends data, the second optical coupler OP-2 has a signal receiving fault because the temperature of the air conditioner external unit is high, and the upper computer cannot complete self-receiving self-checking; the air conditioner internal unit can receive data due to lower temperature, and the problem that the external unit cannot finish the communication failure of the air conditioner external unit caused by self-receiving verification occurs; for another example, when the air conditioner external unit is a lower computer and the air conditioner internal unit is an upper computer, the third optical coupler OP-3 can receive data to complete self-checking of the upper computer when the fourth optical coupler OP-4 transmits data, and the second optical coupler OP-2 has a signal receiving fault because of high temperature of the air conditioner external unit, the lower computer cannot receive the data transmitted by the internal unit, and the communication fault of the air conditioner internal unit and the external unit exists. Therefore, the main problems of communication faults caused by CTR attenuation of the optocoupler are caused by that the current in a communication loop is not large and the current transmission ratio is too small under the high-temperature working condition.
Under the condition that the temperature is quite normal, the working current of the air conditioner communication current loop is not too high, so that the air conditioner communication stability can be improved by selectively increasing the current in the air conditioner communication current loop when the temperature is too high. Specifically, IF the input current IF of the optocoupler is larger, that is, the working current of the air conditioner communication current loop is larger, the heating value of the current limiting resistor is also larger, and as the temperature is continuously increased, the optocoupler CTR is continuously decreased, when the temperature is sufficiently high, the saturation current value of the phototransistor in the optocoupler is too small due to the fact that the optocoupler CTR is too small, and finally, the MCU cannot recognize that the electric signal causes the communication to be unable to be completed, so that the working current of the air conditioner communication current loop is not too large. When the temperature in the cavity where the control main board is located is detected to be higher than a preset value by the air conditioner external unit, namely when the temperature of the target cavity reaches a preset temperature threshold value, the output voltage of the switching power supply can be controlled to be linearly increased along with the ambient temperature by the MCU of the air conditioner external unit, so that the output voltage of the communication switching power supply is improved, the input current IF in a communication current loop can be increased, the air conditioner communication fault caused by attenuation of the zero-live wire communication optocoupler CTR is prevented, the stability of the air conditioner communication in a high-temperature environment is ensured, the user experience is better, and the service life of an air conditioner product is longer.
In a specific implementation, the air conditioner control system can be integrated in air conditioner equipment, so that when the temperature of a target cavity exceeds a preset temperature threshold, the air conditioner equipment can determine the starting temperature of a switching power supply, determine the voltage of a target communication power supply according to the starting temperature of the switching power supply and the temperature of the target cavity, and then adjust the output voltage of the communication switching power supply based on the voltage of the target communication power supply until the output voltage reaches the voltage of the target communication power supply, thereby solving the problem of communication failure caused by the attenuation of an optocoupler CTR in a communication loop of an air conditioner outdoor unit in a high-temperature environment and improving the stability of air conditioner communication.
Further, the embodiment of the application also provides air conditioning equipment, which comprises a processor, a communication interface, a memory and a communication bus, wherein the processor and the communication interface and the memory are communicated with each other through the communication bus; a memory for storing a computer program; and the processor is used for realizing the steps of the air conditioner control method according to any one of the method embodiments when executing the program stored in the memory.
Embodiments of the present application also provide a computer-readable storage medium, on which a computer program is stored, which when executed by a processor implements the steps of the air conditioner control method according to any one of the embodiments of the first aspect.
It should be noted that, for the system, circuit, air conditioning apparatus, and storage medium embodiments, since they are substantially similar to the method embodiments, the description is relatively simple, and the relevant points are referred to in the description of the method embodiments.
Relational terms such as "first" and "second", and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is only a specific embodiment of the invention to enable those skilled in the art to understand or practice the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. An air conditioner control method, comprising:
determining the target cavity temperature of an air conditioner outdoor unit;
if the temperature of the target cavity exceeds a preset temperature threshold, determining the starting temperature of a switching power supply of the air conditioner;
Determining a target communication power supply voltage according to the starting temperature of the switching power supply and the target cavity temperature;
adjusting the output voltage of the communication switch power supply of the air conditioner until the output voltage reaches the target communication power supply voltage;
wherein, the determining the starting temperature of the switching power supply of the air conditioner comprises the following steps:
acquiring the using time length information and the optical coupler preset information of the air conditioner, wherein the optical coupler preset information comprises optical coupler attenuation coefficient information and preset starting temperature corresponding to the communication switching power supply;
Determining the starting temperature of the switching power supply according to the optocoupler attenuation coefficient information, the using time length information and the preset starting temperature;
The determining the target communication power supply voltage according to the switching power supply starting temperature and the target cavity temperature comprises the following steps:
determining a target temperature difference based on the switching power supply start-up temperature and a target cavity temperature;
and determining the target communication power supply voltage according to the target temperature difference and the initial output voltage corresponding to the communication switching power supply.
2. The method of controlling an air conditioner according to claim 1, wherein the determining the target cavity temperature of the air conditioner external unit includes:
After the air conditioner is started, determining the working state of the air conditioner;
if the working state is an air conditioner refrigerating state, acquiring temperature sampling information of an air conditioner external unit;
and determining the temperature of the target cavity according to the temperature sampling information.
3. The method according to claim 1, wherein determining the switching power supply start-up temperature according to the optocoupler attenuation coefficient information, the time-of-use information, and the preset start-up temperature comprises:
Determining an attenuation temperature based on the optocoupler attenuation coefficient information and the use time length information;
and determining the starting temperature of the switching power supply based on the attenuation temperature and the preset starting temperature.
4. The air conditioner control method according to claim 1, wherein determining the target communication power supply voltage according to the target temperature difference and the initial output voltage corresponding to the communication switching power supply, comprises:
determining an adjustment voltage based on the target temperature difference and a preset optocoupler temperature rise coefficient of the air conditioner;
And determining the target communication power supply voltage based on the adjustment voltage and the initial output voltage.
5. An air conditioner control system, comprising:
The target cavity temperature determining module is used for determining the target cavity temperature of the air conditioner outdoor unit;
The power supply starting temperature determining module is used for determining the starting temperature of the switching power supply of the air conditioner when the temperature of the target cavity exceeds a preset temperature threshold;
The communication power supply voltage determining module is used for determining a target communication power supply voltage according to the starting temperature of the switching power supply and the target cavity temperature;
The output voltage adjusting module is used for adjusting the output voltage of the communication switching power supply of the air conditioner until the output voltage reaches the target communication power supply voltage;
wherein, the power supply start-up temperature determination module includes:
The information acquisition sub-module is used for acquiring the using time length information of the air conditioner and the preset information of the optical coupler, wherein the preset information of the optical coupler comprises the attenuation coefficient information of the optical coupler and the preset starting temperature corresponding to the communication switch power supply;
The temperature determining submodule is used for determining the starting temperature of the switching power supply according to the optocoupler attenuation coefficient information, the using time length information and the preset starting temperature;
the communication power supply voltage determining module comprises:
A target temperature difference determining submodule, configured to determine a target temperature difference based on the switching power supply start temperature and a target cavity temperature;
and the communication power supply voltage determining submodule is used for determining the target communication power supply voltage according to the target temperature difference and the initial output voltage corresponding to the communication switching power supply.
6. An air conditioner control circuit, comprising: the air conditioner comprises a temperature sampling unit, a communication switching power supply and an air conditioner external unit control unit;
The first end of the air conditioner external unit control unit is electrically connected with the temperature sampling unit, and the second end of the air conditioner external unit control unit is electrically connected with the control end of the communication switch power supply;
The air conditioner external unit control unit is used for determining a target cavity temperature according to the temperature sampling information detected by the temperature sampling unit, determining a switching power supply starting temperature when the target cavity temperature exceeds a preset temperature threshold, and adjusting the output voltage of the communication switching power supply according to the switching power supply starting temperature and the target cavity temperature until the output voltage reaches a target communication power supply voltage;
The air conditioner external unit control unit is further used for acquiring the use time length information and the optocoupler preset information of the air conditioner, wherein the optocoupler preset information comprises optocoupler attenuation coefficient information and preset starting temperature corresponding to the communication switching power supply, and determining the starting temperature of the switching power supply according to the optocoupler attenuation coefficient information, the use time length information and the preset starting temperature;
The air conditioner external unit control unit is further used for determining a target temperature difference based on the starting temperature of the switching power supply and the target cavity temperature; and determining the target communication power supply voltage according to the target temperature difference and the initial output voltage corresponding to the communication switching power supply.
7. The air conditioning equipment is characterized by comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are communicated with each other through the communication bus;
A memory for storing a computer program;
a processor for implementing the steps of the air conditioner control method according to any one of claims 1 to 4 when executing a program stored in a memory.
8. An air conditioning apparatus comprising the air conditioning control circuit of claim 6.
9. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the air conditioner control method as claimed in any one of claims 1 to 4.
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