Air conditioner and control method and device thereof, storage medium and computer program product

Abstract

The invention provides an air conditioner and a control method and device thereof, a storage medium and a computer program product. The method comprises the steps that maintenance structure parameters of the environment where the air conditioner is located, fresh air mode parameters of the air conditioner, indoor environment parameters and outdoor environment parameters are obtained; according to the obtained maintenance structure parameters, fresh air mode parameters, indoor environment parameters and outdoor environment parameters, the heat load of the air conditioner is calculated; according to the calculated thermal load and indoor and outdoor temperature difference of the air conditioner, the initial heat exchange amount of the air conditioner is determined; and the air conditioner is controlled to operate according to the determined initial heat exchange amount. According to the scheme provided by the invention, the air conditioning system can more accurately adapt to load changes under different environmental conditions, and the stability and reliability of the system are enhanced.

Description

Technical Field

[0001] The present invention relates to the field of control, and in particular, to an air conditioner and its control method, device, storage medium, and computer program product. Background Art

[0002] With the improvement of people's living standards, the requirements for the comfort of the indoor environment are also getting higher and higher. As an important means of adjusting the indoor temperature and humidity, the performance and control accuracy of the air conditioning system directly affect the comfort level of the indoor environment. The air conditioner temperature control methods in the related art often rely on simple set value adjustment, which is difficult to adapt to the dynamic changes of the heat load under different environmental conditions, resulting in large fluctuations in the indoor temperature and low energy utilization efficiency. Summary of the Invention

[0003] The main object of the present invention is to overcome the defects of the above-mentioned related technologies, and to provide an air conditioner and its control method, device, storage medium, and computer program product to solve the problem that the air conditioner temperature control method in the related technology is difficult to adapt to the dynamic changes of the heat load under different environmental conditions.

[0004] On the one hand, the present invention provides a control method for an air conditioner, including: obtaining the maintenance structure parameters of the environment where the air conditioner is located, the fresh air mode parameters of the air conditioner, the indoor environment parameters, and the outdoor environment parameters; calculating the heat load of the air conditioner according to the obtained maintenance structure parameters, fresh air mode parameters, indoor environment parameters, and outdoor environment parameters; determining the initial heat exchange amount of the air conditioner according to the calculated heat load of the air conditioner and the indoor-outdoor temperature difference; controlling the air conditioner to operate with the determined initial heat exchange amount.

[0005] Optionally, determining the initial heat exchange amount of the air conditioner according to the calculated heat load of the air conditioner and the indoor-outdoor temperature difference includes: the initial heat exchange amount of the air conditioner is equal to the product of the heat load of the air conditioner and the temperature difference correction coefficient, where the temperature difference correction coefficient is determined according to the indoor-outdoor temperature difference.

[0006] Optionally, determining the temperature difference correction coefficient according to the indoor-outdoor temperature difference includes: in different operating modes, different indoor-outdoor temperature differences correspond to different temperature difference correction coefficients; wherein, when the air conditioner operates in the cooling mode, the greater the indoor-outdoor temperature difference, the greater the temperature difference correction coefficient, and when the air conditioner operates in the heating mode, the greater the indoor-outdoor temperature difference, the smaller the temperature difference correction coefficient.

[0007] Optionally, it further includes: monitoring whether the heat load of the air conditioner changes; when it is monitored that the heat load of the air conditioner changes, calculating the relevant heat load change amount; adjusting the operating parameters of the air conditioner according to the calculated relevant heat load change amount.

[0008] Optionally, it further includes: controlling the operation of the air conditioner according to the temperature deviation between the indoor temperature and the set temperature by using a PID control algorithm.

[0009] Optionally, at least one of the proportional coefficient, integral coefficient, and differential coefficient for PID control is adjusted according to environmental changes.

[0010] Optionally, at least one of the proportional coefficient, integral coefficient, and differential coefficient is adjusted in the following manner according to the temperature difference between the set temperature and the indoor temperature: when the temperature difference between the set temperature and the indoor temperature is greater than a first preset temperature difference threshold, the proportional coefficient is increased, the integral coefficient is decreased, and / or the differential coefficient is increased; when the temperature difference between the set temperature and the indoor temperature is less than a second preset temperature difference threshold, the proportional coefficient is decreased and / or the integral coefficient is increased and / or the differential coefficient is decreased when the change rate of the indoor temperature is less than a preset threshold; where the first preset temperature difference threshold is greater than the second preset temperature difference threshold; and / or, at least one of the proportional coefficient, integral coefficient, and differential coefficient is adjusted according to the following relational expression according to the temperature difference between the set temperature and the indoor temperature:

[0011]

[0012] where ΔT is the temperature difference between the set temperature and the indoor temperature, fp is the proportional coefficient correction function, fi is the integral coefficient correction function, and fd is the differential coefficient correction function;

[0013]

[0014] where K p,min is the minimum proportional coefficient, K p,max is the maximum proportional coefficient, α and β are slopes, and ΔT mid is the segmented threshold;

[0015]

[0016] where K i,max is the maximum integral coefficient, ΔT low is the low threshold, ΔT high is the high threshold, and δ is the balance factor;

[0017]

[0018] where K d,min is the minimum differential coefficient, K d,base is the basic differential coefficient, K d,max is the maximum differential coefficient, ΔT small and ΔT large are the segmented thresholds, and μ is the slope, for example 0.1, to control the gain change in the middle region.

[0019] On the other hand, the present invention provides a control device for an air conditioner, comprising: an acquisition unit configured to acquire maintenance structure parameters of the environment where the air conditioner is located, fresh air mode parameters of the air conditioner, indoor environment parameters, and outdoor environment parameters; a first calculation unit configured to calculate the heat load of the air conditioner according to the maintenance structure parameters, fresh air mode parameters, indoor environment parameters, and outdoor environment parameters acquired by the acquisition unit; a determination unit configured to determine an initial heat exchange amount of the air conditioner according to the heat load of the air conditioner calculated by the first calculation unit and the indoor-outdoor temperature difference; and a first control unit configured to control the air conditioner to operate with the initial heat exchange amount determined by the determination unit.

[0020] Optionally, the determination unit determines the initial heat exchange amount of the air conditioner according to the heat load of the air conditioner calculated by the calculation unit and the indoor-outdoor temperature difference, including: the initial heat exchange amount of the air conditioner is equal to the product of the heat load of the air conditioner and a temperature difference correction coefficient, wherein the temperature difference correction coefficient is determined according to the indoor-outdoor temperature difference.

[0021] Optionally, determining the temperature difference correction coefficient according to the indoor-outdoor temperature difference includes: in different operating modes, different indoor-outdoor temperature differences correspond to different temperature difference correction coefficients; wherein, when the air conditioner operates in the cooling mode, the greater the indoor-outdoor temperature difference, the greater the temperature difference correction coefficient, and when the air conditioner operates in the heating mode, the greater the indoor-outdoor temperature difference, the smaller the temperature difference correction coefficient.

[0022] Optionally, it further includes: a monitoring unit configured to monitor whether the heat load of the air conditioner changes; a second calculation unit configured to calculate a relevant heat load change amount when the monitoring unit monitors that the heat load of the air conditioner changes; and an adjustment unit configured to adjust the operating parameters of the air conditioner according to the relevant heat load change amount calculated by the second calculation unit.

[0023] Optionally, it further includes: a second control unit configured to control the operation of the air conditioner by using a PID control algorithm according to the temperature deviation between the indoor temperature and the set temperature.

[0024] Optionally, at least one of a proportional coefficient, an integral coefficient, and a differential coefficient for PID control is adjusted according to environmental changes.

[0025] Optionally, at least one of the proportional coefficient, integral coefficient, and differential coefficient is adjusted according to the temperature difference between the set temperature and the indoor temperature in the following manner: when the temperature difference between the set temperature and the indoor temperature is greater than a first preset temperature difference threshold, increase the proportional coefficient, decrease the integral coefficient, and / or increase the differential coefficient; when the temperature difference between the set temperature and the indoor temperature is less than a second preset temperature difference threshold, decrease the proportional coefficient and / or increase the integral coefficient and / or decrease the differential coefficient when the change rate of the indoor temperature is less than a preset threshold; wherein, the first preset temperature difference threshold is greater than the second preset temperature difference threshold; and / or,

[0026] At least one of the proportional coefficient, integral coefficient, and differential coefficient is adjusted according to the following relational expression according to the temperature difference between the set temperature and the indoor temperature:

[0027]

[0028] wherein, ΔT is the temperature difference between the set temperature and the indoor temperature, fp is the proportional coefficient correction function, fi is the integral coefficient correction function, and fd is the differential coefficient correction function;

[0029]

[0030] wherein, K p,min is the minimum proportional coefficient, K p,max is the maximum proportional coefficient, α and β are slopes, and ΔT mid is the segmentation threshold;

[0031]

[0032] wherein, K i,max is the maximum integral coefficient, ΔT low is the low threshold, ΔT high is the high threshold, and δ is the balance factor;

[0033]

[0034] wherein, K d,min is the minimum differential coefficient, K d,base is the basic differential coefficient, K d,max is the maximum differential coefficient, ΔT small and ΔT large are the segmentation thresholds, and μ is the slope, for example, 0.1, which controls the gain change in the intermediate region.

[0035] Another aspect of the present invention provides a storage medium, on which a computer program is stored, and when the program is executed by a processor, the steps of any of the foregoing methods are implemented.

[0036] In another aspect, the present invention provides an air conditioner, comprising a processor, a memory, and a computer program stored on the memory and executable on the processor, wherein when the processor executes the program, the steps of any of the foregoing methods are implemented.

[0037] In another aspect, the present invention provides an air conditioner, comprising any of the foregoing control devices.

[0038] In another aspect, the present invention provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the steps of any of the foregoing methods are implemented.

[0039] According to the technical solution of the present invention, by comprehensively considering factors such as the heat transfer of the building envelope, the fresh air load, the personnel activities, and the equipment heat dissipation, the heat load of the air conditioner is calculated, and thus the air conditioner is controlled according to the calculated heat load; according to the changes in the indoor and outdoor environmental conditions and the dynamic fluctuations of the indoor load, the operating state of the air conditioning system is adjusted in real time to ensure the stable operation and high energy efficiency of the system.

[0040] According to the technical solution of the present invention, through accurate heat load calculation and intelligent temperature regulation strategies, the air conditioning system can more accurately adapt to the load changes under different environmental conditions, enhancing the stability and reliability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The drawings described herein are used to provide a further understanding of the present invention, and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the drawings:

[0042] Figure 1 is a schematic diagram of a method of an embodiment of the control method of the air conditioner provided by the present invention;

[0043] Figure 2 is a schematic diagram of a method of another embodiment of the control method of the air conditioner provided by the present invention;

[0044] Figure 3 is a schematic diagram of a method of still another embodiment of the control method of the air conditioner provided by the present invention;

[0045] Figure 4 is a schematic diagram of a method of a specific embodiment of the control method of the air conditioner provided by the present invention;

[0046] Figure 5 is a structural block diagram of an embodiment of the control device of the air conditioner provided by the present invention;

[0047] Figure 6 is a structural block diagram of another embodiment of the control device of the air conditioner provided by the present invention;

[0048] Figure 7It is a structural block diagram of another embodiment of the control device of the air conditioner provided by the present invention. Detailed implementation manners

[0049] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only a part rather than all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0050] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0051] The present invention provides a control method for an air conditioner.

[0052] Figure 1 It is a schematic diagram of a method of an embodiment of the control method of the air conditioner provided by the present invention.

[0053] As Figure 1 shown, according to an embodiment of the present invention, the control method at least includes step S110, step S120, step S130 and step S140.

[0054] In step S110, obtain the maintenance structure parameters of the environment where the air conditioner is located, the fresh air mode parameters of the air conditioner, the indoor environment parameters and the outdoor environment parameters.

[0055] The maintenance structure parameters may specifically include: the heat transfer coefficient of the building envelope and the area of the building envelope. The fresh air mode parameters may specifically include: air density, fresh air volume, and specific heat capacity of air. The indoor environment parameters may specifically include: indoor temperature, the number and activity intensity of indoor people, and the number and power of indoor devices. The outdoor environment parameters may specifically include: outdoor temperature.

[0056] Among them, the indoor and outdoor temperatures can be detected by a temperature sensor. The infrared sensor detects the activities of people indoors. According to the user's needs and the characteristics of environmental changes, an appropriate data acquisition frequency is set. When the indoor and outdoor environmental changes are large, the data acquisition frequency is increased to more accurately capture the changes in environmental parameters. At least one preprocessing operation such as filtering, denoising, and calibration can be performed on the collected data to improve the reliability and accuracy of the data. At the same time, abnormal data is identified and eliminated to avoid adverse effects on system control.

[0057] Step S120, calculate the heat load of the air conditioner according to the obtained maintenance structure parameters, fresh air mode parameters, indoor environmental parameters, and outdoor environmental parameters.

[0058] Specifically, first calculate the heat loss of the maintenance structure, the fresh air operation load, the heat dissipation of personnel activities, and the heat dissipation of equipment in the environment according to the obtained maintenance structure parameters, fresh air mode parameters, indoor environmental parameters, and outdoor environmental parameters, and then calculate the heat load of the air conditioner according to the calculated heat loss of the maintenance structure, the fresh air operation load, the heat dissipation of personnel activities, and the heat dissipation of equipment in the environment.

[0059] The heat load of the air conditioner may specifically include the heat loss of the maintenance structure, the fresh air operation load, the heat dissipation of personnel activities, and the heat dissipation of equipment in the environment.

[0060] The heat loss of the maintenance structure is one of the main loads that the air conditioning system needs to handle. It includes the heat transfer losses of parts such as exterior walls, roofs, floors, and doors and windows. In a specific embodiment, the heat loss of the maintenance structure can be calculated according to the heat transfer coefficient of the maintenance structure, the area of the maintenance structure, and the indoor-outdoor temperature difference. The calculation formula is, for example:

[0061] Qw = K·A·Δt (1)

[0062] Among them, Qw represents the heat loss of the maintenance structure (the unit can be, for example: W), K represents the heat transfer coefficient of the maintenance structure (the unit can be, for example: W / (m 2 ·K)), which can be determined according to the material and area of the maintenance structure, A represents the area of the maintenance structure (the unit can be, for example: m 2 ), and Δt represents the indoor-outdoor temperature difference (the unit can be, for example: K).

[0063] The fresh air operation load is the cooling and heating load brought about by the introduction of fresh air into the room. In a specific embodiment, the fresh air operation load can be calculated according to the air density, fresh air volume, specific heat capacity of air, and indoor-outdoor temperature difference. The calculation formula is, for example:

[0064] Qx = ρ·V·cp·Δt (2)

[0065] Among them, Qx represents the fresh air load (the unit can be, for example: W), ρ represents the air density (the unit can be, for example: kg / m 3 / s), which can be determined according to the wind speed (for example, the fresh air volume can be automatically obtained according to the set wind speed magnitude), cp represents the specific heat capacity of air (the unit can be, for example: J / (kg·K)), and Δt represents the indoor-outdoor temperature difference (the unit can be, for example: K).

[0066] The heat dissipation of personnel activities depends on the number of indoor personnel and the activity intensity. In a specific implementation manner, the heat dissipation of personnel activities can be calculated according to the number of indoor personnel and the activity intensity. The calculation formula is, for example:

[0067] Qp = n·q (3)

[0068] Qp represents the heat dissipation of personnel activities (the unit can be, for example: W), n represents the number of indoor personnel, and q represents the heat dissipation of a single person's activity (the unit can be, for example: W). Among them, the heat dissipation of a single person's activity can be estimated according to different activity intensities. For example, it is about 100W when sitting still, about 180W during light labor, about 230W during moderate labor, and about 300W during heavy labor. All of the above are the heat dissipations per unit time. Among them, the activity intensity of personnel can be determined by detecting the personnel activity situation. For example, the activity intensity of personnel can be determined by detecting the personnel activity situation through an infrared sensor.

[0069] The heat dissipation of equipment includes the heat generated by various indoor equipment, such as the heat generated by electrical equipment, lighting equipment, etc. In a specific implementation manner, the heat dissipation of equipment can be calculated according to the power and heat conversion efficiency of each equipment. The calculation formula is, for example:

[0070] Qe = ∑Pi·ηi (4)

[0071] Among them, Qe represents the heat dissipation of equipment (the unit can be, for example: W), Pi represents the power of the i-th equipment (the unit can be, for example: W), and ηi represents the heat conversion efficiency of the i-th equipment (dimensionless). For common household electrical appliances, their heat conversion efficiencies are relatively fixed.

[0072] After calculating the heat loss of the building envelope Qw, the fresh air operation load Qx, the heat dissipation of personnel activities Qp, and the heat dissipation of equipment Qe respectively according to the above methods, add the heat loss of the building envelope Qw, the fresh air operation load Qx, the heat dissipation of personnel activities Qp, and the heat dissipation of equipment Qe to obtain the heat load of the air conditioning system:

[0073] Qtotal = Qw + Qx + Qp + Qe (5)

[0074] Step S130: Determine the initial heat exchange capacity of the air conditioner based on the calculated heat load of the air conditioner and the indoor-outdoor temperature difference.

[0075] The initial heat exchange capacity (initial heat exchange ability) of the air conditioner may specifically include: the initial heating capacity (initial heating amount) or the initial cooling capacity (initial cooling amount) of the air conditioner. The initial heat exchange capacity of the air conditioner is equal to the product of the heat load of the air conditioner and the temperature difference correction coefficient, where different indoor-outdoor temperature differences correspond to different temperature difference correction coefficients. The calculation formula for the initial heat exchange capacity is, for example:

[0076] Initial heat exchange capacity = Q × K (6)

[0077] where Q is the heat load of the air conditioner, and K is the temperature difference correction coefficient, which is used to adjust the initial heat exchange capacity according to the indoor-outdoor temperature difference. For example, in hot summer weather, when the indoor-outdoor temperature difference is large, the cooling capacity of the air conditioning system is appropriately increased to quickly lower the indoor temperature.

[0078] In different operating modes, different indoor-outdoor temperature differences correspond to different temperature difference correction coefficients. Among them, when the air conditioner operates in the cooling mode, the greater the indoor-outdoor temperature difference, the greater the temperature difference correction coefficient. For example, in summer cooling: the greater the temperature difference, the higher the K value. For example, when the indoor-outdoor temperature difference ΔT > 10°C, K = 1.2; when the air conditioner operates in the heating mode, the greater the indoor-outdoor temperature difference, the smaller the temperature difference correction coefficient. For example, in winter heating: the greater the temperature difference, the lower the K value. For example, when the indoor-outdoor temperature difference ΔT > 20°C, K = 0.9.

[0079] Step S140: Control the air conditioner to operate at the determined initial heat exchange capacity.

[0080] Specifically, determine the initial compressor operating frequency and / or the initial indoor fan speed of the air conditioner according to the determined initial heat exchange capacity; control the air conditioner to operate at the determined initial compressor operating frequency and / or the initial indoor fan speed. For example, different initial heat exchange capacities correspond to different initial compressor operating frequencies and / or initial indoor fan speeds. The corresponding relationship between the initial heat exchange capacity and the initial compressor operating frequency and / or the initial indoor fan speed can be preset, and according to this corresponding relationship, find the initial compressor operating frequency and / or the initial indoor fan speed corresponding to the currently determined initial heat exchange capacity.

[0081] Figure 2 It is a schematic diagram of the method of another embodiment of the control method of the air conditioner provided by the present invention.

[0082] As Figure 2 shown, based on the above embodiment, according to another embodiment of the present invention, the control method further includes step S150.

[0083] Step S150, according to the temperature deviation between the indoor temperature and the set temperature, use the PID control algorithm to control the operation of the air conditioner.

[0084] Specifically, after controlling the air conditioner to operate at the determined initial heat exchange amount, the operation of the air conditioner can be controlled according to the temperature deviation between the indoor temperature and the set temperature. The indoor temperature can be detected in real time by a temperature sensor, and the temperature signal is transmitted to the data processing module. The high-precision temperature sensor has the characteristics of high precision, high stability and fast response, and can ensure the accuracy and real-time of temperature measurement. At the same time, the temperature signal is filtered and calibrated to further improve the reliability of temperature measurement.

[0085] The output u(t) of the PID controller consists of three parts: proportional (P), integral (I), and derivative (D). The formula is as follows:

[0086]

[0087] Among them, e(t) is the temperature deviation between the set temperature and the indoor temperature, de(t) / dt is the change rate of the temperature deviation, e(t)=Tset - Tactual, Tset is the set temperature, and Tactual is the indoor temperature; Kp is the proportional coefficient, used to quickly respond to the deviation, Ki is the integral coefficient, used to eliminate the steady-state error, and Kd is the derivative coefficient, used to predict the change trend of the deviation.

[0088] u(t) is the control signal calculated by the PID controller according to the current error e(t) and its historical error information (integral term) and error change rate (derivative term). This control signal will be sent to the controlled object to adjust the operation state of the controlled object so that its output gradually approaches the desired set value.

[0089] e(τ) is the error function, which represents the difference between the set value and the actual output value of the system at time τ. Here, τ is an integration variable used to traverse each time point from 0 to t during the integration process. dτ: the infinitesimal change of the integration variable τ, representing the differential of time τ during the integration process.

[0090] Furthermore, it may further include: adjusting at least one of the proportional coefficient, integral coefficient, and derivative coefficient for PID control according to environmental changes to optimize the control effect:

[0091] In a specific embodiment, at least one of the proportional coefficient, integral coefficient, and derivative coefficient is adjusted in the following manner:

[0092] (1) When the absolute value of the temperature difference between the set temperature and the indoor temperature is greater than the first preset temperature difference threshold, increase the proportional coefficient, decrease the integral coefficient, and / or increase the derivative coefficient.

[0093] Specifically, when the absolute value of the temperature difference between the set temperature and the indoor temperature is greater than the first preset temperature difference threshold, it indicates that the temperature difference between the set temperature and the indoor temperature is large (for example, in high temperature in summer), then increase the proportionality coefficient, decrease the integral coefficient, and / or increase the differential coefficient. Increasing Kp can quickly respond to the temperature deviation, decreasing Ki can avoid overshoot caused by integral saturation, and increasing Kd can suppress the temperature change trend and reduce oscillation.

[0094] (2) When the absolute value of the temperature difference between the set temperature and the indoor temperature is less than the second preset temperature difference threshold, decrease the proportionality coefficient and / or increase the integral coefficient, and / or decrease the differential coefficient when the indoor temperature change rate is less than the preset threshold.

[0095] Specifically, when the absolute value of the temperature difference between the set temperature and the indoor temperature is less than the second preset temperature difference threshold, it indicates that the indoor temperature is close to the set value, then decrease the proportionality coefficient and / or increase the integral coefficient. When the indoor temperature change rate is less than the preset threshold, decrease the differential coefficient. Decreasing Kp can avoid overshoot, increasing Ki can eliminate the steady-state error. When the indoor temperature change rate is less than the preset change rate threshold, it indicates that the temperature changes slowly, and Kd can be appropriately decreased.

[0096] In another specific embodiment, according to the temperature difference between the set temperature and the indoor temperature, adjust according to the following relational expression:

[0097]

[0098] Among them, ΔT is the absolute value of the temperature difference between the set temperature and the indoor temperature, fp is the proportionality coefficient correction function, fi is the integral coefficient correction function, and fd is the differential coefficient correction function. When the temperature difference ΔT is large, increase Kp and Kd, and decrease Ki to achieve fast response and stable control. When the temperature difference ΔT is small, appropriately decrease Kp and increase Ki, so that the system can more accurately eliminate the steady-state error. At the same time, adjust kd according to the actual situation. For example, when the indoor temperature change rate is less than the preset change rate threshold, it indicates that the temperature changes slowly, and Kd can be appropriately decreased.

[0099]

[0100] Among them, K p,min is the minimum proportionality coefficient, for example, it is 0.5, to avoid system sluggishness; K p,max is the maximum proportionality coefficient, for example, it is 3.0, to limit the response intensity; α and β are slopes, for example, α = 0.1, β = 0.05, to control the gain change rate; ΔT mid is the segmentation threshold, for example, it is 10 °C.

[0101]

[0102] Among them, K i,max is the maximum integral coefficient, for example, 0.5; ΔT low is the low threshold, for example, 2°C. When the temperature is lower than this value, the integral effect is the strongest. ΔT high is the high threshold, for example, 20°C. When the temperature is higher than this value, the integral effect approaches 0; δ is the balance factor, for example, 1.0, to avoid the denominator being 0.

[0103]

[0104] Among them, K d,min is the minimum differential coefficient, for example, 0.1, to avoid noise amplification; K d,base is the basic differential coefficient, for example, 0.5; K d,max is the maximum differential coefficient, for example, 2.0, to limit the oscillation suppression intensity; ΔT small and ΔT large are the segmented thresholds. For example, ΔT large = 3°C and ΔT large = 15°C; μ is the slope, for example, 0.1, to control the gain change in the intermediate region.

[0105] According to the above embodiments, through accurate heat load calculation and intelligent temperature regulation strategies, the air conditioning system can more accurately adapt to load changes under different environmental conditions, enhancing the stability and reliability of the system.

[0106] Figure 3 It is a schematic diagram of the method of another embodiment of the control method of the air conditioner provided by the present invention.

[0107] As Figure 3 shown, based on the above embodiments, according to another embodiment of the present invention, the control method further includes step S160, step S170, and step S180.

[0108] Step S160: Monitor whether the heat load of the air conditioner changes.

[0109] Specifically, it can detect whether there are people entering or leaving or equipment starting or stopping, or detect whether the outdoor temperature changes. If it is detected that there are people entering or leaving, equipment starting or stopping, or the outdoor temperature changes, it is determined that the indoor heat load changes. For example, it can detect whether there are people entering or leaving the room through an infrared sensor, and detect whether the outdoor temperature changes through a temperature sensor.

[0110] Step S170: When it is monitored that the heat load of the air conditioner changes, calculate the relevant heat load change amount.

[0111] Step S180: Adjust the operating parameters of the air conditioner according to the calculated relevant heat load change amount.

[0112] For example, when it is detected that the change in outdoor temperature exceeds a preset temperature value, calculate the change in heat load related to the outdoor temperature. For example, the heat consumption of the maintenance structure and the fresh air operation load are both related to the temperature difference between indoors and outdoors. Then, according to the changed outdoor temperature, recalculate the temperature difference between indoors and outdoors, and calculate the change in the heat consumption of the maintenance structure and the fresh air operation load (for example, according to the formulas for calculating the change in the heat consumption of the maintenance structure and the fresh air operation load described above, calculate the changed temperature difference between indoors and outdoors, and generate the change in the heat consumption of the maintenance structure and the fresh air operation load), to obtain the change in the heat load of the air conditioner, and then adjust the operating parameters of the air conditioner according to the change in the heat load.

[0113] For example, when it is detected that the change in the number of indoor people exceeds a preset number, calculate the change in heat load related to the number of indoor people, that is, the heat dissipation from human activities. Then, according to the change in the number of people, calculate the change in the heat dissipation from human activities (for example, according to the formula for calculating the heat dissipation from people described above, calculate the changed number of people and the activity intensity of the corresponding people, and generate the change in the heat dissipation from human activities), to obtain the change in the heat load of the air conditioner, and then adjust the operating parameters of the air conditioner according to the change in the heat load.

[0114] In a specific embodiment, different changes in heat load correspond to different amounts of adjustment of operating parameters. For example, determine the amount of parameter adjustment according to the percentage change in heat load. The amount of parameter adjustment includes, for example, at least one of the compressor frequency, refrigerant flow rate, and the rotational speed of the indoor fan. For example, when the heat load increases by 5% - 10%, the compressor frequency is increased by 5 Hz, the refrigerant flow rate is increased by 15% (the refrigerant flow rate is controlled by controlling the opening of the electronic expansion valve), and the rotational speed of the indoor fan is increased by 100 rpm.

[0115] According to the above embodiments, the operating state of the air conditioning system is adjusted in real time according to the changes in indoor and outdoor environmental conditions and the dynamic fluctuations of indoor load, reducing unnecessary energy waste and improving energy utilization efficiency.

[0116] To clearly illustrate the technical solution of the present invention, the execution process of the control method of the air conditioner provided by the present invention will be described below with a specific embodiment.

[0117] Figure 4 It is a schematic diagram of the method of a specific embodiment of the control method of the air conditioner provided by the present invention. As Figure 4 shown, first perform data acquisition and preprocessing, then perform heat load calculation. According to the calculated heat load of the air conditioner, determine the initial heat exchange amount of the air conditioner, control the air conditioner according to the initial heat exchange amount, and then perform PID control of the temperature according to the deviation between the indoor temperature and the set temperature.

[0118] The present invention also provides a control device for an air conditioner.

[0119] Figure 5 This is a structural block diagram of an embodiment of the control device for an air conditioner provided by the present invention. As Figure 5 shown, the control device 100 of the air conditioner includes: an acquisition unit 110, a first calculation unit 120, a determination unit 130, and a first control unit 140.

[0120] The acquisition unit 110 is used to acquire the maintenance structure parameters of the environment where the air conditioner is located, the fresh air mode parameters of the air conditioner, the indoor environment parameters, and the outdoor environment parameters.

[0121] Specifically, the maintenance structure parameters may include: the heat transfer coefficient of the building envelope and the area of the building envelope. The fresh air mode parameters may specifically include: air density, fresh air volume, and specific heat capacity of air. The indoor environment parameters may specifically include: indoor temperature, the number and activity intensity of indoor occupants, and the number and power of indoor devices. The outdoor environment parameters may specifically include: outdoor temperature.

[0122] Among them, the indoor and outdoor temperatures can be detected by temperature sensors. The activities of indoor occupants can be detected by infrared sensors. According to user requirements and the characteristics of environmental changes, an appropriate data acquisition frequency can be set. When the indoor and outdoor environments change greatly, the data acquisition frequency is increased to more accurately capture the changes in environmental parameters. At least one preprocessing operation such as filtering, denoising, and calibration can be performed on the collected data to improve the reliability and accuracy of the data. At the same time, abnormal data is identified and excluded to avoid adverse effects on system control.

[0123] The first calculation unit 120 is used to calculate the heat load of the air conditioner according to the maintenance structure parameters, fresh air mode parameters, indoor environment parameters, and outdoor environment parameters acquired by the acquisition unit.

[0124] Specifically, first, according to the acquired maintenance structure parameters, fresh air mode parameters, indoor environment parameters, and outdoor environment parameters, calculate the heat loss of the maintenance structure, the fresh air operation load, the heat dissipation of human activities, and the heat dissipation of equipment in the environment, and then calculate the heat load of the air conditioner according to the calculated heat loss of the maintenance structure, the fresh air operation load, the heat dissipation of human activities, and the heat dissipation of equipment in the environment.

[0125] The heat load of the air conditioner may specifically include the heat loss of the maintenance structure, the fresh air operation load, the heat dissipation of human activities, and the heat dissipation of equipment in the environment.

[0126] The heat loss of the maintenance structure is one of the main loads that the air conditioning system needs to handle. It includes heat transfer losses in parts such as exterior walls, roofs, floors, and doors and windows. In a specific embodiment, the heat loss of the maintenance structure can be calculated according to the heat transfer coefficient of the maintenance structure, the area of the maintenance structure, and the indoor-outdoor temperature difference. The calculation formula is, for example:

[0127] Qw = K·A·Δt (1)

[0128] Wherein, Qw represents the heat consumption of the enclosure structure (the unit can be, for example: W), K represents the heat transfer coefficient of the enclosure structure (the unit can be, for example: W / (m 2 ·K)), which can be determined according to the material and area of the maintenance structure, A represents the area of the enclosure structure (the unit can be, for example: m 2 ), and Δt represents the temperature difference between indoors and outdoors (the unit can be, for example: K).

[0129] The fresh air operation load is the cooling and heating load brought about by the introduction of fresh air into the room. In a specific embodiment, the fresh air operation load can be calculated according to the air density, fresh air volume, specific heat capacity of air, and the temperature difference between indoors and outdoors. The calculation formula is, for example:

[0130] Qx = ρ·V·cp·Δt (2)

[0131] Wherein, Qx represents the fresh air load (the unit can be, for example: W), ρ represents the air density (the unit can be, for example: kg / m3), V represents the fresh air volume (the unit can be, for example: m 3 / s), which can be determined according to the wind speed (for example, the fresh air volume can be automatically obtained according to the set wind speed), cp represents the specific heat capacity of air (the unit can be, for example: J / (kg·K)), and Δt represents the temperature difference between indoors and outdoors (the unit can be, for example: K).

[0132] The heat dissipation from human activities depends on the number of indoor people and the activity intensity. In a specific embodiment, the heat dissipation from human activities can be calculated according to the number of indoor people and the activity intensity. The calculation formula is, for example:

[0133] Qp = n·q (3)

[0134] Qp represents the heat dissipation from human activities (the unit can be, for example: W), n represents the number of indoor people, q represents the heat dissipation per person's activity (the unit can be, for example: W). Among them, the heat dissipation per person's activity can be estimated according to different activity intensities. For example, it is about 100W when sitting still, about 180W during light labor, about 230W during moderate labor, and about 300W during heavy labor. All of the above are the heat dissipations per unit time. Among them, the activity intensity of people can be determined by detecting the activity situation of people. For example, the activity intensity of people can be determined by detecting the activity situation of people through an infrared sensor.

[0135] The heat dissipation from equipment includes the heat generated by various indoor equipment, such as electrical equipment, lighting equipment, etc. In a specific embodiment, the heat dissipation from human activities can be calculated according to the power and heat conversion efficiency of each equipment. The calculation formula is, for example:

[0136] Qe = ∑Pi·ηi (4)

[0137] Wherein, Qe represents the heat dissipation of the equipment (the unit can be, for example: W), Pi represents the power of the i-th equipment (the unit can be, for example: W), ηi represents the heat conversion efficiency of the i-th equipment (dimensionless), and for common household electrical appliances, their heat conversion efficiency is relatively fixed.

[0138] After calculating the heat loss Qw of the building envelope, the fresh air operation load Qx, the heat dissipation Qp of personnel activities, and the heat dissipation Qe of the equipment respectively according to the above method, add the heat loss Qw of the building envelope, the fresh air operation load Qx, the heat dissipation Qp of personnel activities, and the heat dissipation Qe of the equipment to obtain the heat load of the air conditioning system:

[0139] Qtotal = Qw + Qx + Qp + Qe (5)

[0140] Determine the unit 130, which is used to determine the initial heat exchange amount of the air conditioner according to the heat load of the air conditioner calculated by the first calculation unit and the indoor-outdoor temperature difference.

[0141] The initial heat exchange amount (initial heat exchange capacity) of the air conditioner may specifically include: the initial heating capacity (initial heating amount) or the initial cooling capacity (initial cooling amount) of the air conditioner. The initial heat exchange amount of the air conditioner is equal to the product of the heat load of the air conditioner and the temperature difference correction coefficient. Among them, different indoor-outdoor temperature differences correspond to different temperature difference correction coefficients. The calculation formula of the initial heat exchange amount is, for example:

[0142] Initial heat exchange amount = Q × K (6)

[0143] Wherein, Q is the heat load of the air conditioner, and K is the temperature difference correction coefficient, which is used to adjust the initial heat exchange amount according to the indoor-outdoor temperature difference. For example, in high-temperature weather in summer, when the indoor-outdoor temperature difference is large, appropriately increase the cooling capacity of the air conditioning system to quickly reduce the indoor temperature.

[0144] In different operating modes, different indoor-outdoor temperature differences correspond to different temperature difference correction coefficients. Among them, when the air conditioner operates in the cooling mode, the greater the indoor-outdoor temperature difference, the greater the temperature difference correction coefficient. For example, in summer cooling: the greater the temperature difference, the higher the K value. For example, when the indoor-outdoor temperature difference ΔT > 10 °C, K = 1.2; when the air conditioner operates in the heating mode, the greater the indoor-outdoor temperature difference, the smaller the temperature difference correction coefficient. For example, in winter heating: the greater the temperature difference, the lower the K value. For example, when the indoor-outdoor temperature difference ΔT > 20 °C, K = 0.9.

[0145] The first control unit 140 is used to control the air conditioner to operate with the initial heat exchange amount determined by the determination unit.

[0146] Specifically, determine the initial compressor operating frequency and / or the initial indoor fan speed of the air conditioner according to the determined initial heat exchange amount; control the air conditioner to operate at the determined initial compressor operating frequency and / or the initial indoor fan speed. For example, different initial heat exchange amounts correspond to different initial compressor operating frequencies and / or initial indoor fan speeds. The corresponding relationship between the initial heat exchange amount and the initial compressor operating frequency and / or the initial indoor fan speed can be preset in advance. According to the corresponding relationship, find the initial compressor operating frequency and / or the initial indoor fan speed corresponding to the currently determined initial heat exchange amount.

[0147] Figure 6 It is a structural block diagram of another embodiment of the control device of the air conditioner provided by the present invention. As Figure 6 shown, based on any of the above embodiments, according to another embodiment of the present invention, the control device 100 of the air conditioner further includes: a second control unit 150.

[0148] The second control unit 150 is configured to control the operation of the air conditioner by using a PID control algorithm according to the temperature deviation between the indoor temperature and the set temperature.

[0149] Specifically, after controlling the air conditioner to operate at the determined initial heat exchange amount, the operation of the air conditioner can be controlled according to the temperature deviation between the indoor temperature and the set temperature. The indoor temperature can be detected in real time by a temperature sensor, and the temperature signal is transmitted to the data processing module. The high-precision temperature sensor has the characteristics of high precision, high stability and fast response, and can ensure the accuracy and real-time of temperature measurement. At the same time, the temperature signal is filtered and calibrated to further improve the reliability of temperature measurement.

[0150] The output u(t) of the PID controller consists of three parts: proportional (P), integral (I), and derivative (D). The formula is as follows:

[0151]

[0152] where e(t) is the temperature deviation between the set temperature and the indoor temperature, de(t) / dt is the change rate of the temperature deviation, e(t)=Tset - Tactual, Tset is the set temperature, and Tactual is the indoor temperature; Kp is the proportional coefficient for quickly responding to the deviation, Ki is the integral coefficient for eliminating the steady-state error, and Kd is the derivative coefficient for predicting the change trend of the deviation.

[0153] u(t) is the control signal calculated by the PID controller according to the error e(t) at the current moment and its historical error information (integral term) and the error change rate (derivative term). This control signal is sent to the controlled object to adjust the operating state of the controlled object so that its output gradually approaches the desired set value.

[0154] e(τ) is the error function, which represents the difference between the set value and the actual output value of the system at time τ. Here, τ is an integration variable used to traverse each time point from 0 to t during the integration process. dτ: the tiny change of the integration variable τ, representing the differentiation of time τ during the integration process.

[0155] Furthermore, the second control unit 150 can also be used to: adjust at least one of the proportional coefficient, integral coefficient, and differential coefficient for PID control according to environmental changes to optimize the control effect:

[0156] In a specific embodiment, at least one of the proportional coefficient, integral coefficient, and differential coefficient is adjusted in the following manner:

[0157] (1) When the absolute value of the temperature difference between the set temperature and the indoor temperature is greater than the first preset temperature difference threshold, increase the proportional coefficient, decrease the integral coefficient, and / or increase the differential coefficient.

[0158] Specifically, when the absolute value of the temperature difference between the set temperature and the indoor temperature is greater than the first preset temperature difference threshold, it indicates that the temperature difference between the set temperature and the indoor temperature is large (for example, in high temperature in summer), then increase the proportional coefficient, decrease the integral coefficient, and / or increase the differential coefficient. Increasing Kp can quickly respond to temperature deviation, decreasing Ki can avoid overshoot caused by integral saturation, and increasing Kd can suppress the temperature change trend and reduce oscillation.

[0159] (2) When the absolute value of the temperature difference between the set temperature and the indoor temperature is less than the second preset temperature difference threshold, decrease the proportional coefficient and / or increase the integral coefficient and / or decrease the differential coefficient when the indoor temperature change rate is less than the preset threshold.

[0160] Specifically, when the absolute value of the temperature difference between the set temperature and the indoor temperature is less than the second preset temperature difference threshold, it indicates that the indoor temperature is close to the set value, then decrease the proportional coefficient and / or increase the integral coefficient, and decrease the differential coefficient when the indoor temperature change rate is less than the preset threshold. Decreasing Kp can avoid overshoot, increasing Ki can eliminate the steady-state error, and when the indoor temperature change rate is less than the preset change rate threshold, it indicates that the temperature changes slowly, and Kd can be appropriately decreased.

[0161] In another specific embodiment, according to the temperature difference between the set temperature and the indoor temperature, the adjustment is made according to the following relational expression:

[0162]

[0163] Wherein, ΔT is the absolute value of the temperature difference between the set temperature and the indoor temperature, fp is the proportional coefficient correction function, fi is the integral coefficient correction function, and fd is the derivative coefficient correction function. When the temperature difference ΔT is large, increase Kp and Kd and decrease Ki to achieve fast response and stable control. When the temperature difference ΔT is small, appropriately decrease Kp and increase Ki so that the system can more accurately eliminate the steady-state error. At the same time, adjust kd according to the actual situation. For example, when the change rate of the indoor temperature is less than the preset change rate threshold, it indicates that the temperature changes slowly, and Kd can be appropriately decreased.

[0164]

[0165] Among them, K p,min is the minimum proportional coefficient, for example, 0.5, to avoid system sluggishness; K p,max is the maximum proportional coefficient, for example, 3.0, to limit the response intensity; α and β are slopes, for example, α = 0.1 and β = 0.05, to control the gain change rate; ΔT mid is the segmented threshold, for example, 10 °C.

[0166]

[0167] Among them, K i,max is the maximum integral coefficient, for example, 0.5; ΔT low is the low threshold, for example, 2 °C. When the temperature is lower than this value, the integral effect is the strongest. ΔT high is the high threshold, for example, 20 °C. When the temperature is higher than this value, the integral effect approaches 0; δ is the balance factor, for example, 1.0, to avoid the numerator being 0.

[0168]

[0169] Among them, K d,min is the minimum derivative coefficient, for example, 0.1, to avoid noise amplification; K d,base is the basic derivative coefficient, for example, 0.5; K d,max is the maximum derivative coefficient, for example, 2.0, to limit the oscillation suppression intensity; ΔT small and ΔT large are the segmented thresholds. For example, ΔT large = 3 °C, and ΔT large = 15 °C; μ is the slope, for example, 0.1, to control the gain change in the intermediate region.

[0170] Figure 7 is the structural block diagram of another embodiment of the control device of the air conditioner provided by the present invention. As Figure 7 shown, based on any of the above embodiments, according to another embodiment of the present invention, the control device 100 of the air conditioner further includes: a monitoring unit 160, a second calculation unit 170, and an adjustment unit 180.

[0171] The monitoring unit 160 is configured to monitor whether the heat load of the air conditioner changes.

[0172] Specifically, it can detect whether there are people entering or leaving or equipment starting or stopping, or detect whether the outdoor temperature changes. If it detects that there are people entering or leaving, equipment starting or stopping, or the outdoor temperature changes, it is determined that the indoor heat load changes. For example, an infrared sensor can be used to detect whether there are people entering or leaving the room, and a temperature sensor can be used to detect whether the outdoor temperature changes.

[0173] The second calculation unit 170 is configured to calculate the relevant heat load change amount when the monitoring unit 160 monitors that the heat load of the air conditioner changes. The adjustment unit 180 is configured to adjust the operating parameters of the air conditioner according to the relevant heat load change amount calculated by the second calculation unit.

[0174] For example, when it is detected that the outdoor temperature change exceeds a preset temperature value, calculate the heat load change amount related to the outdoor temperature. For example, the heat consumption of the maintenance structure and the fresh air operation load are both related to the indoor-outdoor temperature difference. Then, according to the changed outdoor temperature, recalculate the indoor-outdoor temperature difference, and calculate the change amounts of the heat consumption of the maintenance structure and the fresh air operation load (for example, according to the formulas for calculating the change amounts of the heat consumption of the maintenance structure and the fresh air operation load mentioned above, calculate the changed indoor-outdoor temperature difference, and generate the change amounts of the heat consumption of the maintenance structure and the fresh air operation load), to obtain the heat load change amount of the air conditioner, and then adjust the operating parameters of the air conditioner according to the heat load change amount.

[0175] For example, when it is detected that the change in the number of indoor people exceeds a preset number, calculate the heat load change amount related to the number of indoor people, that is, the heat dissipation of people's activities. Then, according to the change amount of the number of people, calculate the change amount of the heat dissipation of people's activities (for example, according to the formula for calculating the heat dissipation of people mentioned above, calculate the changed number of people and the activity intensity of the corresponding people, and generate the change amount of the heat dissipation of people's activities), to obtain the heat load change amount of the air conditioner, and then adjust the operating parameters of the air conditioner according to the heat load change amount.

[0176] In a specific embodiment, different heat load change amounts correspond to different operating parameter adjustment amounts. For example, the parameter adjustment amount is determined according to the heat load change percentage. The parameter adjustment amount includes at least one of the compressor frequency, refrigerant flow rate, and the rotational speed of the indoor fan. For example, when the heat load increases by 5% - 10%, the compressor frequency is increased by 5 Hz, the refrigerant flow rate is increased by 15% (the refrigerant flow rate is controlled by controlling the opening degree of the electronic expansion valve), and the rotational speed of the indoor fan is increased by 100 rpm.

[0177] The present invention also provides a storage medium corresponding to the control method of the air conditioner, on which a computer program is stored, and when the program is executed by a processor, the steps of any of the foregoing methods are implemented.

[0178] The present invention also provides an air conditioner corresponding to the control method of the air conditioner, including a processor, a memory, and a computer program stored on the memory and operable on the processor, and when the processor executes the program, the steps of any of the foregoing methods are implemented.

[0179] The present invention also provides an air conditioner corresponding to the control device of the air conditioner, including the control device of any of the foregoing air conditioners.

[0180] The present invention also provides a computer program product corresponding to the control method of the air conditioner, including a computer program, and when the computer program is executed by a processor, the steps of any of the foregoing methods are implemented.

[0181] Accordingly, the solution provided by the present invention, according to the technical solution of the present invention, comprehensively considers factors such as the heat transfer of the building envelope, the fresh air load, the human activities, and the equipment heat dissipation, calculates the heat load of the air conditioner, and thus controls the air conditioner according to the calculated heat load; according to the changes in the indoor and outdoor environmental conditions and the dynamic fluctuations of the indoor load, the operating state of the air conditioning system is adjusted in real time to ensure the stable operation and high energy efficiency of the system.

[0182] According to the technical solution of the present invention, through accurate heat load calculation and intelligent temperature adjustment strategies, the air conditioning system can more accurately adapt to the load changes under different environmental conditions, enhancing the stability and reliability of the system.

[0183] The functions described herein can be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions can be stored on a computer-readable medium or transmitted via a computer-readable medium as one or more instructions or codes. Other examples and embodiments are within the scope and spirit of the present invention and the appended claims. For example, due to the nature of software, the functions described above can be implemented using software executed by a processor, hardware, firmware, hardwiring, or any combination of these. In addition, each functional unit can be integrated in one processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit.

[0184] In several embodiments provided by this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are merely illustrative. For example, the division of the units can be a logical function division. In actual implementation, there can be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection between each other can be through some interfaces. The indirect coupling or communication connection of units or modules can be in an electrical or other form.

[0185] The units described as separate components may or may not be physically separated. The components serving as control devices may or may not be physical units, that is, they can be located in one place or distributed to multiple units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0186] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the related technology, or all or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: USB flash drives, read-only memories (ROMs), random access memories (RAMs), mobile hard disks, magnetic disks, or optical discs and other various media that can store program codes.

[0187] The above are only the embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.

Claims

1. A control method for an air conditioner, characterized in that, Including: Obtaining the maintenance structure parameters of the environment where the air conditioner is located, the fresh air mode parameters of the air conditioner, the indoor environment parameters, and the outdoor environment parameters; Calculating the heat load of the air conditioner according to the obtained maintenance structure parameters, fresh air mode parameters, indoor environment parameters, and outdoor environment parameters; Determining the initial heat exchange amount of the air conditioner according to the calculated heat load of the air conditioner and the indoor-outdoor temperature difference; Controlling the air conditioner to operate with the determined initial heat exchange amount.

2. The method according to claim 1, wherein Determining the initial heat exchange amount of the air conditioner according to the calculated heat load of the air conditioner and the indoor-outdoor temperature difference, including: The initial heat exchange amount of the air conditioner is equal to the product of the heat load of the air conditioner and the temperature difference correction coefficient, wherein the temperature difference correction coefficient is determined according to the indoor-outdoor temperature difference.

3. The method according to claim 1, wherein Determining the temperature difference correction coefficient according to the indoor-outdoor temperature difference, including: Under different operating modes, different indoor-outdoor temperature differences correspond to different temperature difference correction coefficients; Wherein, when the air conditioner operates in the cooling mode, the greater the indoor-outdoor temperature difference, the greater the temperature difference correction coefficient, and when the air conditioner operates in the heating mode, the greater the indoor-outdoor temperature difference, the smaller the temperature difference correction coefficient.

4. The method according to any one of claims 1 to 3, characterized in that, Also including: Monitoring whether the heat load of the air conditioner changes; When it is monitored that the heat load of the air conditioner changes, calculating the relevant heat load change amount; Adjusting the operating parameters of the air conditioner according to the calculated relevant heat load change amount.

5. The method according to any one of claims 1 to 3, characterized in that Also including: Controlling the operation of the air conditioner by using a PID control algorithm according to the temperature deviation between the indoor temperature and the set temperature.

6. The method according to claim 5, wherein Adjusting at least one of the proportional coefficient, integral coefficient, and differential coefficient for PID control according to environmental changes.

7. The method according to claim 6, wherein According to the temperature difference between the set temperature and the indoor temperature, adjusting at least one of the proportional coefficient, integral coefficient, and differential coefficient in the following manner: When the temperature difference between the set temperature and the indoor temperature is greater than the first preset temperature difference threshold, increasing the proportional coefficient, decreasing the integral coefficient, and / or increasing the differential coefficient; When the temperature difference between the set temperature and the indoor temperature is less than the second preset temperature difference threshold, decreasing the proportional coefficient and / or increasing the integral coefficient and / or decreasing the differential coefficient when the indoor temperature change rate is less than the preset threshold; Wherein, the first preset temperature difference threshold is greater than the second preset temperature difference threshold; And / or, According to the temperature difference between the set temperature and the indoor temperature, adjusting at least one of the proportional coefficient Kp, integral coefficient Ki, and differential coefficient Kd according to the following relational expressions: Wherein, ΔT is the temperature difference between the set temperature and the indoor temperature, fp is the proportional coefficient correction function, fi is the integral coefficient correction function, and fd is the differential coefficient correction function; Among them, K p,min is the minimum proportionality coefficient, K p,max is the maximum proportionality coefficient, α and β are slopes, and ΔT mid is the segmented threshold; Among them, K i,max is the maximum integral coefficient, ΔT low is the low threshold, ΔT high is the high threshold, and δ is the balance factor; Among them, K d,min is the minimum differential coefficient, K d,base is the basic differential coefficient, K d,max is the maximum differential coefficient, ΔT small and ΔT large are the segmented thresholds, μ is the slope, for example 0.1, which controls the gain change in the middle region.

8. A control device for an air conditioner, characterized in that, Including: An acquisition unit for acquiring the maintenance structure parameters of the environment where the air conditioner is located, the fresh air mode parameters of the air conditioner, the indoor environment parameters, and the outdoor environment parameters; A first calculation unit for calculating the heat load of the air conditioner according to the maintenance structure parameters, fresh air mode parameters, indoor environment parameters, and outdoor environment parameters acquired by the acquisition unit; A determination unit, configured to determine an initial heat exchange amount of the air conditioner according to the heat load of the air conditioner calculated by the first calculation unit and the indoor-outdoor temperature difference. A first control unit, configured to control the air conditioner to operate with the initial heat exchange amount determined by the determination unit.

9. A storage medium, characterized in that, A computer program is stored thereon, and when the program is executed by a processor, the steps of any one of claims 1-7 are implemented.

10. An air conditioner, characterized in that, It includes a processor, a memory, and a computer program stored on the memory and executable on the processor. When the processor executes the program, the steps of any one of claims 1-7 are implemented, or it includes a control device as claimed in claim 8.

11. A computer program product, characterized in that, It includes a computer program, and when the computer program is executed by a processor, the steps of any one of claims 1-7 are implemented.

Images