Control method and control device of air conditioner and air conditioner

Abstract

The invention relates to the field of electric appliances, and provides an air conditioner control method and device and an air conditioner. The method comprises the steps of obtaining position information of a user, and determining a target swing angle of a swing blade assembly according to the position information of the user; according to the position information of the user and the needed set blowing air speed, the target air supply speed of the air conditioner and the target air guide angle of an air guide plate are calculated based on the jet flow speed model and the jet flow track center line model of air supply of the air conditioner; and adjusting the air conditioner according to the target air supply speed, the target swing angle and the target air guide angle. According to the method, the jet velocity model and the jet trajectory center line model are introduced, the user position information is used for calculating the target air supply speed and the target air guide angle at the same time, and cooperative adjustment of the air speed and the air direction is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrical appliances, in particular to a control method and device of an air conditioner and the air conditioner. BACKGROUND

[0002] In the prior art, the existing intelligent air conditioner generally has a "wind following people" air supply function, and a typical implementation manner is as follows: the position information of a user relative to the air conditioner is acquired through an infrared sensor, a camera or a radar and the like position sensing device, and then the air deflector is driven to rotate in the vertical direction and the swing leaf assembly is driven to swing in the horizontal direction, so that the air supply airflow direction is aligned with the position of the user. In such a scheme, the air supply wind speed is usually pre-set by the user and kept constant, and the control system only dynamically adjusts the wind direction according to the user position, without changing the wind speed.

[0003] However, when the distance between the user and the air conditioner changes, even if the wind direction is always aligned with the user, the actual wind speed felt by the user will still fluctuate sharply due to the natural attenuation of the airflow in the propagation process. The specific performance is as follows: if the user is close to the air conditioner, the high-speed airflow under the fixed wind speed directly blows on the human body without sufficient attenuation, resulting in too strong wind feeling and uncomfortable body feeling; if the user is far away from the air conditioner, the airflow under the same set wind speed is greatly attenuated due to the increased propagation distance, so that the wind speed at the user is much lower than the expected value, resulting in the experience of "too small wind" or even "no wind". This phenomenon that the wind feeling changes nonlinearly with the distance makes the air conditioner unable to provide consistent comfortable air supply experience during the movement of the user. SUMMARY

[0004] The present application provides a control method and device of an air conditioner and the air conditioner to solve the defects in the prior art and achieve the following effects: by introducing a jet velocity model and a jet trajectory center line model, the user position information is used to calculate the target air supply wind speed and the target air deflection angle, and the coordinated adjustment of the wind speed and the wind direction is realized.

[0005] In a first aspect, the present application provides a control method of an air conditioner, the air conditioner comprising an air deflector rotatable in an up-down direction and a swing leaf assembly swingable in a left-right direction, and the method comprises: acquiring position information of a user, and determining a target swing angle of the swing leaf assembly according to the user position information; calculating a target air supply wind speed of the air conditioner and a target air deflection angle of the air deflector based on a jet velocity model and a jet trajectory center line model of air supply of the air conditioner according to the position information of the user and a set blowing wind speed required by the user; adjusting the air conditioner according to the target air supply wind speed, the target swing angle and the target air deflection angle.

[0006] According to some embodiments of the present application, the step of calculating the target air supply wind speed of the air conditioner and the target air deflection angle of the air deflector according to the position information of the user and the set blowing wind speed of the user, based on a jet velocity model and a jet trajectory centerline model of air supply of the air conditioner, specifically comprises: calculating the target air supply wind speed when the user is in the jet center according to the position information of the user and the set blowing wind speed of the user, based on the jet velocity model; calculating the target air deflection angle when the user is in the jet center according to the position information of the user and the target air supply wind speed, based on the jet trajectory centerline model.

[0007] According to some embodiments of the present application, the position information comprises at least one of the user height, the air conditioner installation height, the horizontal distance of the user relative to the air outlet of the air conditioner, and the left-right position of the user relative to the air outlet of the air conditioner.

[0008] According to some embodiments of the present application, in the step of calculating the target air supply wind speed when the user is in the jet center according to the position information of the user and the set blowing wind speed of the user, based on the jet velocity model, the calculation formula of the jet velocity model is: wherein, is the target air supply wind speed; x is the horizontal distance of the user relative to the air outlet of the air conditioner; is the set blowing wind speed of the user; is the equivalent diameter of the air outlet of the air conditioner, defined as the area of the air outlet A divided by the circumference P multiplied by 4, i.e. , in meters; a is the turbulence coefficient of the air outlet of the air conditioner; and are constants.

[0009] According to some embodiments of the present application, and are obtained as follows: for different air conditioners, velocity data of the air conditioner on the trajectory centerline of the jet are obtained by experiment or simulation, and Bayesian Markov Chain Monte Carlo method is used for fitting to obtain and .

[0010] According to some embodiments of the present application, in the step of calculating the target air deflection angle when the user is in the jet center according to the position information of the user and the target air supply wind speed, based on the jet trajectory centerline model, the calculation formula of the jet trajectory centerline model is: in, The centerline of the jet is at a horizontal distance x Given the vertical drop height relative to the air outlet, and the user height and air conditioner installation height as H and h respectively, then... ; x is the horizontal distance between the user and the air conditioner vent; is the equivalent diameter of the air conditioner vent, defined as the vent area. A With perimeter P Multiply the ratio by 4, that is The unit is meters; a The turbulence coefficient of the air conditioner outlet; and It is a constant; These are Archimedes numbers, and their formula is: in, g It is the acceleration due to gravity; The average indoor temperature; Set the air temperature supplied from the air conditioner outlet. This refers to the temperature difference between indoors and outdoors.

[0011] According to some embodiments of the present invention, and The methods for obtaining it are as follows: For different air conditioners, experimental or simulation data on the centerline position of the jet trajectory under different air guiding angles and supply air velocities are obtained. The data is then fitted using the Bayesian Markov chain Monte Carlo method to derive the corresponding values ​​for the target air guiding angle and target supply air velocity. and .

[0012] According to some embodiments of the present invention, the step of adjusting the air conditioner according to the target air supply velocity, the target swing angle, and the target air guide angle includes: Based on the target swing angle and the target air guiding angle, calculate the current air loss of the air conditioner, and calculate and update the target air supply speed based on the air loss.

[0013] Secondly, the present invention protects a control device for an air conditioner, the air conditioner including a rotatable air guide plate in a vertical direction and a swing blade assembly in a horizontal direction, the control device comprising: The first acquisition module is used to acquire the user's location information and determine the target swing angle of the swing blade assembly based on the user's location information. The second acquisition module is configured to acquire the position information of the user and the required blowing wind speed, and calculate the target blowing wind speed of the air conditioner and the target deflection angle of the deflector based on a jet velocity model and a jet trajectory centerline model of air supply of the air conditioner. The control module is configured to adjust the air conditioner according to the target blowing wind speed, the target swing angle and the target deflection angle.

[0014] In a third aspect, the present application provides an air conditioner, comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the control method of the air conditioner according to the first aspect of the present application.

[0015] According to the control method of the air conditioner, the position information of the user is used to calculate the target blowing wind speed and the target deflection angle, and the blowing wind speed and the deflection angle are adjusted simultaneously, so that the blowing wind speed of the air outlet is adjusted dynamically according to the distance of the user to maintain a constant blowing wind speed, and the deflection angle is adjusted synchronously to ensure that the air flow reaches the user accurately, thereby overcoming the problem that the blowing wind speed is fixed in the traditional "wind follows the user" technology, and the blowing wind speed is too strong near the user and there is no wind far from the user. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0017] Figure 1 Fig. 1 is one of the flow diagrams of the control method of the air conditioner provided by the present application.

[0018] Figure 2 Fig. 2 is another of the flow diagrams of the control method of the air conditioner provided by the present application.

[0019] Figure 3 Fig. 3 is a third of the flow diagrams of the control method of the air conditioner provided by the present application.

[0020] Figure 4 Fig. 4 is a schematic diagram of the jet trajectory centerline and the blowing height of the air conditioner provided by the present application.

[0021] Figure 5 Fig. 5 is a structural schematic diagram of the control device of the air conditioner provided by the present application.

[0022] Figure 6 Fig. 6 is a structural schematic diagram of the air conditioner provided by the present application. DETAILED DESCRIPTION

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0024] The air conditioner control method, control device, and air conditioner proposed in this invention are described below with reference to the accompanying drawings. Before providing a detailed description of the embodiments of this invention, the overall application scenario is first described. The air conditioner control method, control device, electronic device, and computer-readable storage medium of this invention can be applied locally to the air conditioner, to cloud platforms in the Internet field, or to other types of cloud platforms in the Internet field, or to third-party devices. These third-party devices may include various types such as mobile phones, tablets, laptops, in-vehicle computers, and other smart terminals.

[0025] The following description uses an air conditioner control method as an example. It should be understood that the control method of this invention can also be applied to cloud platforms and third-party devices. It should be noted that the air conditioner includes a rotatable air guide vane in the vertical direction and a swing blade assembly in the horizontal direction. The control method of this invention can determine a reasonable rotation angle of the air guide vane and a swing angle of the swing blade assembly based on the user's location information, thereby providing the user with a better airflow experience.

[0026] like Figures 1 to 3 As shown, an air conditioning control method according to a first aspect embodiment of the present invention includes: Step S1: Obtain the user's location information and determine the target swing angle of the pendulum component based on the user's location information.

[0027] In step S1, "user's location information" refers to the user's spatial coordinates relative to the air conditioner's vent, including at least the user's left and right azimuth angles or lateral offset in the horizontal plane, used to characterize the user's lateral position in front of the air conditioner. "Target swing angle" refers to the specific angle to which the louver assembly needs to rotate in order to align the center of the airflow with the user's lateral position.

[0028] In this step, the air conditioner obtains the lateral orientation information of the user relative to the air outlet in real time through the built-in position sensing module (such as an infrared array, a millimeter wave radar, or a camera); and the control system calculates the angle of rotation required by the swing leaf assembly according to the orientation information and a preset mapping function (such as a linear relationship or a lookup table function), so that the horizontal center line of the air supply airflow is aligned with the lateral position of the user. In this way, this step can realize the identification and response of the lateral position of the user, ensure that the air supply accurately covers the area where the user is in the horizontal dimension, and avoid air flow deviation.

[0029] In step S2, the target air supply wind speed of the air conditioner and the target wind guide angle of the wind guide plate are calculated based on the jet velocity model and the jet trajectory center line model of the air supply of the air conditioner according to the position information of the user and the set air supply wind speed required by the user.

[0030] In step S2, the "set air supply wind speed" refers to the comfortable wind speed value that the user expects to feel on the body surface, which is set by the user or defaulted by the system. It needs to be explained that the "jet velocity model" is a mathematical model established based on the jet theory of fluid mechanics, which is used to describe the nonlinear attenuation relationship between the air outlet wind speed of the air conditioner and the wind speed at the user; and the "jet trajectory center line model" is a trajectory model describing the change of the center line of the air supply airflow in space with distance, temperature difference, wind speed, etc., which is used to determine the angle that the wind guide plate should adjust to make the airflow center accurately reach the user's height position.

[0031] For example, in actual operation, this step first extracts the horizontal distance and height difference in the user position information, and combines the set air supply wind speed to substitute into the pre-calibrated jet velocity model to inversely solve the target air supply wind speed required by the air outlet of the air conditioner; then, the target air supply wind speed, the user height, the installation height of the air conditioner, the air supply temperature, the average indoor temperature, and other parameters are taken as input parameters to substitute into the jet trajectory center line model to calculate the target wind guide angle of the wind guide plate required to make the airflow center line intersect at the user's height. In this way, this step can dynamically calculate the air supply wind speed and the wind guide angle required to meet the comfortable wind feeling by coupling the user distance, the temperature difference, and the wind speed through the physical model, and solve the problem of over-strong or over-weak wind feeling caused by distance change in the traditional scheme.

[0032] In step S3, the air conditioner is adjusted according to the target air supply wind speed, the target swing angle, and the target wind guide angle.

[0033] In step S3, adjusting the air conditioner specifically includes controlling the internal execution mechanism of the air conditioner, including driving the swing leaf assembly to rotate to the target swing angle, driving the wind guide plate to rotate to the target wind guide angle, and adjusting the fan speed to output the target air supply wind speed.

[0034] In this step, the control system converts the target air supply wind speed into a corresponding fan target rotating speed, which is based on the air conditioner fan characteristic curve or a pre-labeled air volume-rotating speed mapping relationship; at the same time, angle instructions are respectively sent to the swing leaf driving motor and the air deflector driving motor, so that they are respectively operated to the target swing angle and the target air deflector angle, thereby realizing the joint adjustment of the wind speed and the wind direction. In this way, the calculation results of the previous two steps are converted into actual control actions in this step, the wind speed and the wind direction are cooperatively executed, and it is ensured that the air supply airflow is accurately and comfortably delivered to the user.

[0035] In the related art, the "air following people" air supply technology of the traditional air conditioner usually only adjusts the angle of the air deflector or the swing leaf, so that the air supply airflow direction is aligned with the user position, and the air supply wind speed is maintained at the initial set value of the user. However, according to the free jet theory in fluid mechanics, the airflow supplied by the air conditioner will be attenuated in speed and deviated in trajectory due to the effects of turbulent diffusion, air resistance and environmental temperature difference during propagation. Specifically, when the user is close to the air conditioner, even if the air deflector is aligned with the user, the high-speed airflow at a fixed wind speed will directly impact the human body, causing strong wind feeling and even discomfort; when the user is far away from the air conditioner, the airflow at the same wind speed is severely attenuated, and the actual wind speed reaching the user is significantly lower than the set value, resulting in ineffective air supply or weak body feeling.

[0036] In view of the defects in the above related art, the present application provides a control method of an air conditioner, the core working principle of which is to embed a jet physical model describing the propagation law of airflow into the real-time control loop of the air conditioner, to build a dynamic coupling relationship among the wind speed, the distance and the wind direction, and to realize adaptive and cooperative adjustment of the air supply parameters.

[0037] Specifically, on the one hand, the control method of the present application establishes a wind speed-distance compensation mechanism based on a jet speed model. This mechanism uses the speed attenuation law of the air conditioner air supply jet in free space to establish a quantitative mapping relationship between the wind speed at the user (i.e. the set blowing wind speed) and the air outlet wind speed of the air conditioner. This relationship is usually expressed in the form of a nonlinear function, the input of which is the horizontal distance of the user relative to the air outlet and the target blowing wind speed, and the output of which is the required target air supply wind speed. Through this model, the system can dynamically adjust the air outlet wind speed when the user's position changes, so that the actual wind speed felt by the user is stably maintained near the set value regardless of whether the user is close or far away, thereby eliminating the wind feeling jump caused by the change in distance.

[0038] On the other hand, the control logic of the present application also considers the wind direction - trajectory coordination mechanism of the jet trajectory centerline model. This mechanism considers the lifting or sinking effect of the cold and hot air supply airflow in the vertical direction, combines the air supply speed, the indoor and outdoor temperature difference, the user height and the air conditioner installation height and other parameters to calculate the actual trajectory of the airflow centerline in space. Since the air supply speed itself will affect the relative strength of the airflow inertia and the lifting force, the determination of the deflector angle must be based on the target air supply speed. The present application reversely solves the target angle of the deflector required to make the airflow centerline accurately intersect at the user body height position through the jet trajectory centerline model, thereby ensuring that the airflow not only aligns with the user in the horizontal direction, but also accurately reaches in the vertical direction.

[0039] In summary, the above two mechanisms together constitute a closed-loop coupled control structure, that is, the user position information is simultaneously input for wind speed calculation and wind direction calculation; the target air supply speed calculated is a key parameter for wind direction calculation; finally, the wind speed and wind direction work together to ensure that the air supply airflow accurately covers the user in three-dimensional space and the wind feeling is constant. It can be understood that the above strong coupling adjustment method breaks through the linear control logic of the traditional technology "first determine the wind direction, then determine the wind speed" or "the wind speed is fixed, only the wind direction is adjusted", and fundamentally solves the problem of inconsistent wind feeling across the distance.

[0040] Further, based on the above working principle, the basic working process of the control method of the present application is as follows: after the air conditioner starts the wind following mode, the three-dimensional position information of the user relative to the air outlet is first obtained in real time through the infrared sensor or millimeter wave radar. The control system extracts the lateral orientation information, determines the target swing angle of the swing leaf assembly according to the preset swing leaf angle mapping relationship, and drives the swing leaf motor to execute the angle adjustment.

[0041] Subsequently, the system reads the user-set blowing wind speed value, combines the horizontal distance and height information in the user position, calls the pre-calibrated jet speed model, calculates the target air supply speed of the air conditioner air outlet required to achieve the blowing wind speed; at the same time, combines the air supply temperature, the indoor average temperature and the user height, calls the jet trajectory centerline model, and calculates the target deflector angle that the deflector should adjust.

[0042] Finally, the control system comprehensively considers the target air supply speed, the target swing angle and the target deflector angle, and sends control instructions to the fan, the swing leaf motor and the deflector motor respectively: the fan runs at the target speed corresponding to the target speed, the swing leaf assembly rotates to the target swing angle, and the deflector rotates to the target deflector angle. Thus, the airflow sent by the air conditioner is aligned with the user in the horizontal and vertical directions, and the wind speed is compensated by the distance to meet the user-set comfortable wind feeling, realizing precise, comfortable and self-adaptive air supply control.

[0043] In summary, the air conditioning control method according to embodiments of the present invention, by introducing a jet velocity model and a jet trajectory centerline model, simultaneously uses user location information to calculate the target air supply speed and the target air guide angle, achieving coordinated adjustment of wind speed and direction. Therefore, the system can dynamically adjust the air outlet speed according to the user distance to maintain a constant blowing speed, and simultaneously adjust the air guide angle to ensure accurate airflow delivery, thereby effectively overcoming the problem of excessively strong airflow near the user and no airflow at a distance caused by a fixed wind speed in traditional "wind follows the user" technology.

[0044] Furthermore, it also has the following advantages: First, it achieves consistent wind comfort across distances: By introducing a jet velocity model, the target airflow velocity is dynamically calculated based on the user's position, ensuring that the wind speed felt by the user at different distances remains stably maintained at the set blowing speed level, effectively avoiding the problem of excessively strong winds at close range or insufficient winds at long range. Second, it improves the accuracy and adaptability of the airflow direction: Through a jet trajectory centerline model, the target airflow velocity and the user's position are used together as the basis for calculating the angle of the air guide plate, so that the adjustment of the air guide angle not only considers geometric alignment but also takes into account the actual propagation trajectory of the airflow in space, thereby ensuring that the center of the airflow is accurately delivered to the user's body area.

[0045] Third, a coordinated control mechanism for wind speed and direction has been established. This invention unifies wind speed and direction adjustment under user location information, and the two are coupled and linked through a physical model, breaking the limitations of decoupled control of wind speed and direction in traditional technologies, thus improving the accuracy of intelligent air delivery and user experience. Fourth, no frequent manual intervention from the user is required. Because the system can automatically adjust wind speed and direction in real time according to changes in location, users do not need to repeatedly adjust the windshield or wind direction mode during indoor activities, and can continuously obtain a stable and comfortable air delivery experience, enhancing the intelligence level and ease of use of the air conditioner.

[0046] like Figure 2 As shown, according to some embodiments of the present invention, the steps of calculating the target airflow velocity of the air conditioner and the target air guide angle of the air guide plate based on the user's location information and the user's desired set airflow velocity, and based on the jet velocity model and jet trajectory centerline model of the air conditioner's air supply, specifically include: Based on the user's location information and the set blowing speed, the target air delivery speed when the user is at the center of the jet is calculated based on the jet velocity model. Based on the user's location information and the target air supply velocity, the target air guide angle is calculated when the user is at the center of the jet, using the jet trajectory centerline model.

[0047] In this embodiment, the above steps provide the step-by-step calculation logic for the target supply air velocity and the target air guiding angle. The specific calculation steps are as follows: First, according to the position information of the user and the set blowing wind speed, a target air supply wind speed when the user is in the jet center is calculated based on a jet velocity model. Here, "the user is in the jet center" means that the central axis of the air supply airflow is aligned with the user's body, and the position where the user is located is the reference point for the wind speed decay calculation in the jet velocity model. The jet velocity model describes the physical decay relationship between the air outlet wind speed of the air conditioner and the wind speed at the user, and the input is the horizontal distance of the user relative to the air outlet and the set blowing wind speed, and the output is the target air supply wind speed required for the user to be located in the jet center and to feel the set wind speed. This calculation ensures the accuracy of wind speed compensation, so that the body feeling wind speed at different distances remains consistent.

[0048] Second, according to the position information of the user and the target air supply wind speed calculated in the foregoing, a target guide vane angle when the user is in the jet center is calculated based on a jet trajectory centerline model. The jet trajectory centerline model is used to describe the trend of the centerline of the air supply airflow in space, which is affected by factors such as the air supply wind speed, the user height, the air conditioner installation height, and the airflow buoyancy effect. Since the airflow trajectory changes with the wind speed, the determination of the guide vane angle must be based on the target air supply wind speed. This step solves the angle that the guide vane should adjust to make the airflow centerline intersect at the position of the user by substituting the target air supply wind speed and the user position into the trajectory model, so as to realize accurate air supply in the vertical direction.

[0049] It can be understood that the above two steps constitute a sequentially coupled solving process: first, the wind speed is determined from the wind feeling demand and the distance, and then the wind direction is determined from the wind speed and the position, to ensure that the wind speed and the wind direction are physically coordinated and consistent, so that the user is located in the jet center and the user's use experience is improved.

[0050] In this way, by calculating the target air supply wind speed and the target guide vane angle step by step and taking "the user is in the jet center" as a common constraint condition, the scheme effectively guarantees the wind speed accuracy and direction accuracy of the air supply airflow in space, avoids the deviation of air supply or the distortion of wind feeling caused by independent adjustment of the wind speed and the wind direction, and thus significantly improves the stability and reliability of the comfortable air supply.

[0051] According to some embodiments of the present application, the position information includes at least one of the user height, the air conditioner installation height, the horizontal distance of the user relative to the air outlet of the air conditioner, and the left-right position of the user relative to the air outlet of the air conditioner.

[0052] wherein the user height refers to the vertical height of a target air supply area (such as the shoulder or the center of the torso) of the user's body from the ground, used to determine the target position in the vertical direction to which the airflow needs to be delivered; the air conditioner installation height refers to the vertical height of the center point of the air outlet of the air conditioner from the ground, which together with the user height determines the drop of the airflow in the vertical direction and is a key parameter for calculating the angle of the air deflector; the horizontal distance of the user relative to the air outlet of the air conditioner refers to the straight-line distance of the user from the air outlet in the horizontal plane, which directly affects the degree of speed attenuation in the airflow propagation process and is a core input variable of the jet velocity model; and the left-right position of the user relative to the air outlet of the air conditioner refers to the transverse offset angle or coordinate of the user relative to the center line of the air outlet in the horizontal plane, used to determine the swinging direction and amplitude of the swing leaf assembly to achieve the horizontal air supply aiming.

[0053] It should be noted that the above position information can be obtained in real time by a position sensing module built in the air conditioner, such as a millimeter wave radar, an infrared depth sensor or a binocular camera.

[0054] In this way, by specifying the specific dimensions of the position information, the embodiments ensure that the jet velocity model and the jet trajectory center line model have necessary input parameters, so that the calculation of the target air supply wind speed and the target air deflection angle has physical basis and actual feasibility, thereby guaranteeing the effectiveness and accuracy of the wind speed-wind direction coupling adjustment.

[0055] As shown in FIGS. 1, 2 and 3, according to some embodiments of the present application, in the step of calculating the target air supply wind speed when the user is in the center of the jet based on the jet velocity model according to the position information of the user and the set blowing wind speed, the calculation formula of the jet velocity model is: Figure 3 Figure 4 wherein Vtarget refers to the target air supply wind speed; D refers to the horizontal distance of the user relative to the air outlet of the air conditioner; Vset refers to the set blowing wind speed; D equivalent refers to the equivalent diameter of the air outlet of the air conditioner, defined as the ratio of the area of the air outlet to the perimeter of the air outlet multiplied by 4, i.e. D equivalent = 4A / P, with the unit being meters; x Ct refers to the turbulence coefficient of the air outlet of the air conditioner; and and a and b are constants. A The formula is constructed based on the free jet theory and describes the nonlinear attenuation relationship between the air outlet wind speed V0 of the air conditioner and the wind speed Vtarget of the user when the user is located in the center of the jet center line. Wherein P represents the relative propagation distance, a represents the relative propagation distance, represents the relative propagation distance,

[0056] The formula is constructed based on the free jet theory and describes the nonlinear attenuation relationship between the air outlet wind speed V0 of the air conditioner and the wind speed Vtarget of the user when the user is located in the center of the jet center line. Wherein represents the relative propagation distance, represents the relative propagation distance, represents the relative propagation distance, represents the relative propagation distance.​​Reflecting the dominant role of turbulent diffusion on wind speed attenuation, while and The model is calibrated through experiments or simulations to adapt to the aerodynamic characteristics of specific air conditioning products. In actual calculations, the system substitutes known parameters into the above formula to obtain the target supply air speed required to meet the set blowing air speed, which serves as the basis for subsequent fan speed control.

[0057] It can be understood that the above embodiments of the present application introduce equivalent diameter and turbulent coefficient, so that the model can adapt to air conditioning air outlets of different sizes and structures, improving the universality of the algorithm; at the same time, the introduction of constants and enhances the fitting ability of the model to the measured data, ensuring the accuracy of wind speed compensation. Thus, the air conditioner can stably output a body feeling wind speed that meets the user's comfort requirements at different distances, effectively solving the problem of sharp fluctuations in wind feeling with distance in traditional solutions.

[0058] To further ensure the accuracy and model adaptation of the jet velocity model, the present application also provides a method for obtaining constants and : for different models of air conditioners, wind speed data at multiple positions on the centerline of the jet trajectory are obtained through experimental testing or fluid simulation methods; then, the Bayesian Markov Chain Monte Carlo (MCMC) method is used to fit the wind speed data to determine the values of and that are applicable to the air conditioner model.

[0059] Specifically, the experimental method can include fixing the air conditioning supply air speed in a standard wind tunnel or anechoic laboratory, measuring the actual wind speed at different horizontal distances along the centerline of the jet trajectory using a wind speed sensor, and obtaining data pairs; the simulation method can simulate the air conditioning supply air flow field through computational fluid dynamics (CFD) software and extract the velocity distribution on the centerline of the trajectory. The obtained data are input into the MCMC fitting algorithm as observation samples, which samples and evaluates the degree of agreement between the predicted values and the measured values of the model under different combinations in the parameter space based on the Bayesian inference framework, and finally outputs the parameter estimate with the highest posterior probability.

[0060] It can be understood that the above method can effectively handle measurement noise, model uncertainty and parameter correlation problems compared to the traditional least squares fitting, and obtain more robust and reliable model parameters. After fitting, and As the inherent characteristic parameters of the air conditioner model, the parameters are pre-stored in the storage unit of the air conditioner controller and are directly called when the air is running in the human mode. It should be pointed out that the above parameter calibration process has repeatability and portability, which is suitable for air conditioner products with different structures, sizes or air duct designs, thereby ensuring the stable performance and consistent effect of the control method of the present application on various models.

[0061] In this way, by adopting the MCMC parameter fitting method based on experiments or simulations, the constant and in the jet velocity model is ensured to be highly matched with the aerodynamic characteristics of the specific air conditioner product, thereby significantly improving the accuracy of the calculation of the target air supply wind speed.

[0062] As shown in Figure 3 and Figure 4 , according to some embodiments of the present application, in the step of calculating the target guide wind angle when the user is in the jet center based on the jet trajectory center line model according to the position information of the user and the target air supply wind speed, the calculation formula of the jet trajectory center line model is: wherein, is the vertical drop height of the jet center line at the horizontal distance x from the air outlet, the user height and the air conditioner installation height are H and h respectively, then ; x is the horizontal distance of the user from the air outlet of the air conditioner; is the equivalent diameter of the air outlet of the air conditioner, defined as the ratio of the area A of the air outlet to the circumference P multiplied by 4, that is , unit: meter; a is the turbulence coefficient of the air outlet of the air conditioner; and are constants.

[0063] is the Archimedes number, and the calculation formula is: wherein, g is the acceleration of gravity; is the average indoor temperature; is the air supply temperature of the air outlet of the air conditioner; is the indoor and outdoor temperature difference.

[0064] In the above calculation formula, the model comprehensively considers the effects of airflow inertia, turbulent diffusion and cold and hot buoyancy on the jet trajectory. Since the cold air has a higher density than the ambient air, the supply air flow will deflect downward due to gravity during propagation, and the deflection degree will increase with the increase of the temperature difference between the supply air and the room air. By introducing the Archimedes number, the model can dynamically reflect the effect of temperature difference on the sinking of air flow.

[0065] In actual calculation, the system substitutes the known parameters into the above formula to solve the required jet trajectory condition that satisfies ; then, according to the trajectory, the target deflection angle of the deflection plate is deduced, so that the initial direction of the outflow air flow matches the calculated trajectory, thereby ensuring that the center line of the air flow accurately intersects the user's body height position.

[0066] In summary, the above jet trajectory center line model introduces the Archimedes number to include the buoyancy and sinking effect caused by the temperature difference in the trajectory prediction, thereby significantly improving the physical accuracy of the deflection angle calculation. At the same time, by combining the target supply air speed as an input variable, the strong coupling control of air speed and direction in the vertical dimension is realized. Therefore, the air conditioner can automatically correct the deflection angle according to the actual temperature difference under cooling or heating conditions, avoid the problem of cold air directly blowing on the head or hot air not reaching, and effectively ensure the supply air comfort and space adaptability.

[0067] To further improve the adaptation accuracy of the jet trajectory center line model to different air conditioner models, the present application provides a method for obtaining the constant and : for a specific type of air conditioner, through experimental test or computational fluid dynamics (CFD) simulation, the actual position data of the jet trajectory center line in space under the condition of multiple deflection plate angles and supply air speed combinations are obtained; then, based on the Bayesian Markov Chain Monte Carlo (Bayesian Markov Chain Monte Carlo, MCMC) method, the trajectory data is fitted to determine the values of and that match the structural characteristics of the air conditioner.

[0068] In specific implementation, the experiment can be carried out in a standard test environment: fix the installation position of the air conditioner, set different deflection plate angles (such as 0°, 15°, 30°) and fan speeds (corresponding to different supply air speeds ) in sequence, and measure the vertical coordinates of the jet center line at multiple horizontal distances x using a three-dimensional wind speed scanning device or a particle image velocimetry (PIV) system. , form trajectory dataset; simulation is through CFD software simulation airflow field under the same working condition, extract center line trajectory. The data obtained as observation sample input MCMC fitting algorithm, the algorithm is under the Bayesian framework to the posterior distribution of parameter And Residuals between model prediction and measured trajectory and parameter uncertainty are considered comprehensively, and finally the optimal parameter estimation value is output.

[0069] After fitting, And As the inherent jet characteristics parameters of this air conditioner type, are pre-stored in the non-volatile memory of the controller. When running the wind mode, the system calls the parameter set according to the target air supply wind speed And user location information calculated at present, substitutes into the jet trajectory center line model, and solves the required target guide vane angle.

[0070] In this way, through the MCMC parameter fitting method based on multi-condition experiment or simulation, And Can accurately reflect the actual jet behavior of a specific air conditioner under different wind speed and guide vane angle, significantly improve the prediction accuracy of the trajectory model. The above calibration process fully considers the influence of air conditioner internal air duct, guide vane structure and outlet shape on airflow trajectory, so that the model has good model adaptability, thereby ensuring the reliability of the guide vane angle calculation, and realizing the accurate delivery of airflow in the vertical direction.

[0071] Further, in some embodiments of the present application, in order to improve the adaptability of the jet trajectory center line model to different air conditioner structures, the constant And Be modeled as the function of air supply wind speed And guide vane angle , that is: The introduction of this function relationship makes the jet trajectory center line model able to dynamically reflect the influence of guide vane shape on airflow trajectory, thereby providing a theoretical basis for the coordinated regulation of fan speed and wind direction.

[0072] The specific construction method is as follows: (1) Since the guide vane geometric shape of different air conditioner equipment is different, it is necessary to establish And And air supply wind speed And guide vane angle the function relationship between the air conditioning and the air supply wind speed. Specifically, the actual position data of the jet trajectory center line in space under various combinations of air deflector angles and air supply wind speeds can be obtained through experimental testing or computational fluid dynamics (CFD) simulation; then, the Bayesian Markov Chain Monte Carlo method (MCMC) is used to fit the parameters of the above data to obtain the numerical values corresponding to each It should be noted that the MCMC method is a recommended fitting method, but is not limited to this method. On this basis, multivariate function fitting is performed on and the like, and various fitting models such as polynomials, exponential functions, and neural networks can be used, and the relationship with the best fitting degree is selected as the final function expression and stored in the air conditioner controller for runtime calling.

[0073] (2) To further improve the universality of the model, the air supply wind direction may be used instead of the air deflector angle to directly build the function relationship between and and the air supply wind speed and the air supply wind direction , thereby establishing a universal jet trajectory model decoupled from the specific air deflector structure. On this basis, for different air conditioning air deflector forms (such as single-layer air deflector, double-layer air deflector, and no air deflector), a mapping relationship (which can be achieved by table lookup or function fitting) between the air supply wind direction and the actual air deflector angle is established, so that the universal model can adapt to various air conditioning products.

[0074] By coupling the air supply wind speed and the air deflector angle (or the air supply wind direction ) in the jet trajectory center line model, the calculation of the air deflector angle not only depends on the geometric position, but also fully considers the influence of the air flow dynamics and the air conditioner body structure, thereby providing reliable theoretical support for the synchronous and precise adjustment of the fan speed and the wind direction.

[0075] According to some embodiments of the present application, in the step of adjusting the air conditioner according to the target air supply wind speed, the target swing angle, and the target air deflector angle, the following steps are included: According to the target swing angle and the target air deflector angle, the current wind loss of the air conditioner is calculated, and the target air supply wind speed is calculated and updated according to the wind loss.

[0076] ​​​​​In this embodiment, after determining the target air supply wind speed , the system further calculates the air supply amount Q required by the air conditioner to guide the fan operation control. The air supply amount Q is determined by the target air supply wind speed and the effective area of the air outlet of the air conditioner A , and the basic relationship is: wherein the unit of Q is cubic meters per second (m 3 / s ), A and the cross-sectional area of the air outlet (unit: m 2 ).

[0077] However, in actual operation, the pitch angle of the air deflector and the horizontal swing position of the swing leaf will have a throttling or turbulent effect on the air flow passage, resulting in increased system wind resistance and decreased effective air volume. To ensure that the actual air supply amount meets the calculated requirements, the wind loss needs to be compensated in the fan control.

[0078] Therefore, the system queries the pre-established wind loss mapping relationship through experimental calibration according to the currently set air deflector angle and swing leaf position , which can be a data array, a lookup table, or a function expression, to obtain the corresponding wind loss amount . This wind loss amount indicates the additional air volume proportion required to maintain the target air volume under a specific air deflector and swing leaf combination.

[0079] On this basis, the actual running speed of the fan r (unit: rpm or rps) is calculated, and the calculation formula is: wherein k and b are constants related to the characteristics of the air conditioning unit, reflecting the linear or approximately linear relationship between the fan speed and the air volume of the model; these parameters need to be pre-determined through air volume-speed calibration experiments for different air conditioning models and stored in the controller.

[0080] In this way, by introducing the wind loss correction term , the control method of this embodiment can dynamically compensate for the air volume attenuation caused by changes in the air deflector and swing leaf posture, ensuring that the actual output air volume still meets the target value calculated based on user demand under various air supply angle combinations, thereby ensuring the accuracy and stability of the air supply control.

[0081] The present application realizes dynamic coupling adjustment of the air supply outlet air speed and the air deflector angle (or air supply direction) by embedding the air conditioner air supply jet speed model and the jet trajectory center line model into the real-time control loop. Compared with the traditional control mode of adjusting only the air direction while the air speed is fixed, the method fundamentally solves two typical problems caused by the change of air propagation distance: in the long-distance working condition, air attenuation leads to insufficient air speed at the user, resulting in weakened refrigeration or heating effect; in the short-distance working condition, fixed high air speed directly impacts the human body, causing cold wind overshoot discomfort. Through model-driven air speed adaptive compensation, the user can obtain stable and comfortable air speed at different positions.

[0082] Further, the present application constructs the coupling function relationship between the key parameters (such as 、 ) in the jet trajectory model and the air supply speed and the air deflection direction, and introduces a wind loss compensation mechanism on this basis. The mechanism comprehensively considers the influence of the air deflector and the swing leaf on the air volume under different angle combinations, dynamically corrects the target speed of the fan, so as to realize the compensation of the mechanical resistance and the compensation of the air volume loss. Therefore, not only the accuracy of the air speed actually felt by the human body is improved, but also the spatial positioning accuracy of the air supply position is significantly improved.

[0083] In addition, the present application combines the wind speed-air direction coupling function and the synchronous adjustment mechanism of the user moving position to realize smooth transition of the air supply parameters during continuous change of the user position, effectively eliminating the wind feeling fragmentation phenomenon caused by control lag or parameter mutation in the traditional scheme. The air flow can continuously and accurately cover the target area of the user, reducing the invalid air supply to the unoccupied area, and improving the air supply efficiency.

[0084] Notably, since the air supply position is accurately controllable, the air conditioner can appropriately increase the indoor temperature setting value (for example, increase by 1-2℃ in the cooling mode) while maintaining the same thermal comfort, and maintain the feeling of coolness by air speed compensation, thereby entering the "high temperature wind speed compensation" operation mode. This mode significantly reduces the compressor load and the overall energy consumption, achieving the coordinated optimization of comfort and energy efficiency.

[0085] In summary, the present application is based on the physical jet model, and by digitizing the air conditioner air supply control logic, it systematically coordinates the long-term contradiction between air supply accuracy, wind comfort and operation energy efficiency, providing a control solution for intelligent air conditioners with theoretical rigor and engineering practicality.

[0086] The control device of the air conditioner provided by the present application is described below, and the control device of the air conditioner described below can be correspondingly referred to the control method of the air conditioner described above.

[0087] As Figure 5As shown, the control device of the air conditioner according to the second aspect of the present application comprises: The first obtaining module 110 is configured to obtain position information of a user and determine a target swing angle of the swing leaf assembly according to the position information of the user. The second obtaining module 120 is configured to calculate a target air supply wind speed of the air conditioner and a target guide wind angle of the guide vane according to the position information of the user and a set air supply wind speed required by the user, based on a jet speed model and a jet trajectory center line model of air supply of the air conditioner. The control module 130 is configured to adjust the air conditioner according to the target air supply wind speed, the target swing angle and the target guide wind angle.

[0088] Figure 6 An example of a schematic diagram of a physical structure of an electronic device is shown in FIG. 8. Figure 6 As shown, the electronic device can include a processor 810, a communications interface 820, a memory 830 and a communications bus 840, wherein the processor 810, the communications interface 820 and the memory 830 can communicate with each other through the communications bus 840. The processor 810 can invoke a logical instruction in the memory 830 to execute a control method of the air conditioner, including: obtaining position information of a user and determining a target swing angle of a swing leaf assembly according to the position information of the user; calculating a target air supply wind speed of the air conditioner and a target guide wind angle of a guide vane according to the position information of the user and a set air supply wind speed required by the user, based on a jet speed model and a jet trajectory center line model of air supply of the air conditioner; and adjusting the air conditioner according to the target air supply wind speed, the target swing angle and the target guide wind angle.

[0089] In addition, the logical instruction in the memory 830 described above can be implemented in the form of a software functional unit and sold or used as an independent product, which can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application essentially or the part that contributes to the prior art or part of the technical solutions can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a plurality of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various media that can store program codes.

[0090] In another aspect, the present application also provides a computer program product, which comprises a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions that, when executed by a computer, enable the computer to perform the control method of the air conditioner provided by any of the above methods, comprising: obtaining position information of a user, and determining a target swing angle of a swing leaf assembly according to the position information of the user; calculating a target air supply wind speed of the air conditioner and a target air guide angle of an air guide plate based on a jet velocity model and a jet trajectory center line model of air supply of the air conditioner according to the position information of the user and a set air blowing wind speed required by the user; and adjusting the air conditioner according to the target air supply wind speed, the target swing angle and the target air guide angle.

[0091] In another aspect, the present application also provides a non-transitory computer readable storage medium, which stores a computer program, the computer program being executed by a processor to implement the control method of the air conditioner provided by any of the above methods, comprising: obtaining position information of a user, and determining a target swing angle of a swing leaf assembly according to the position information of the user; calculating a target air supply wind speed of the air conditioner and a target air guide angle of an air guide plate based on a jet velocity model and a jet trajectory center line model of air supply of the air conditioner according to the position information of the user and a set air blowing wind speed required by the user; and adjusting the air conditioner according to the target air supply wind speed, the target swing angle and the target air guide angle.

[0092] The device embodiments described above are merely illustrative, wherein the units shown as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, i.e., can be located in one place, or can be distributed on multiple network units. Part or all of the modules can be selected to achieve the purpose of the embodiment scheme according to actual needs. Those skilled in the art can understand and implement without creative labor.

[0093] From the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be realized by means of software plus necessary general hardware platforms, and of course can also be realized by hardware. Based on such understanding, the above technical solutions, essentially or in terms of the contribution to the prior art, can be embodied in the form of a software product, which can be stored in a computer readable storage medium, such as a ROM / RAM, a magnetic disk, an optical disk, etc., and includes a plurality of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute the methods of various embodiments or some parts of the embodiments.

[0094] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "aspects", "specific aspects", or "some aspects" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or aspect are included in at least one embodiment or aspect of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or aspect. Also, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in one or more embodiments or aspects. In addition, those skilled in the art can combine and combine the different embodiments or aspects described in the specification and the features of the different embodiments or aspects without contradiction, and the combination.

[0095] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A control method of an air conditioner including a deflector rotatable in an up-and-down direction and a swing vane assembly swingable in a left-and-right direction, the control method comprising: determining whether a user is present in front of the air conditioner; and controlling the deflector and the swing vane assembly based on the determination result. The method comprises: acquiring position information of a user, and determining a target swing angle of the swing leaf assembly according to the position information of the user; calculating a target air supply wind speed of the air conditioner and a target air guide angle of the air guide panel based on a jet velocity model and a jet trajectory center line model of air supply of the air conditioner according to the position information of the user and a set blowing wind speed required by the user; adjusting the air conditioner according to the target air supply wind speed, the target swing angle, and the target air guide angle.

2. The control method of the air conditioner according to claim 1, characterized by, The step of calculating the target air supply wind speed of the air conditioner and the target air guide angle of the air guide panel based on the jet velocity model and the jet trajectory center line model of air supply of the air conditioner according to the position information of the user and the set blowing wind speed required by the user comprises: calculating the target air supply wind speed when the user is in the center of the jet based on the jet velocity model according to the position information of the user and the set blowing wind speed; calculating the target air guide angle when the user is in the center of the jet based on the jet trajectory center line model according to the position information of the user and the target air supply wind speed.

3. The control method of the air conditioner according to claim 2, characterized by, The position information comprises at least one of a user height, an air conditioner installation height, a horizontal distance of the user relative to an air outlet of the air conditioner, and a left-right position of the user relative to the air outlet of the air conditioner.

4. The control method of the air conditioner according to claim 3, characterized by, In the step of calculating the target air supply wind speed when the user is in the center of the jet based on the jet velocity model according to the position information of the user and the set blowing wind speed, a calculation formula of the jet velocity model is: wherein, is the target air supply velocity; x is the horizontal distance of the user relative to the air outlet of the air conditioner; is the set blowing velocity; is the equivalent diameter of the air outlet of the air conditioner, defined as the area of the air outlet A divided by the perimeter P multiplied by 4, i.e. , in meters; a is the turbulence coefficient of the air outlet of the air conditioner; and are constants.

5. The control method of the air conditioner according to claim 4, characterized by, and The acquisition method is as follows: for different air conditioners, the velocity data of the air conditioner on the trajectory center line of the jet is obtained by experiment or simulation, the Bayesian Markov chain Monte Carlo method is used for fitting, and and are obtained.

6. The control method of the air conditioner according to claim 3, characterized by, In the step of calculating the target air guide angle when the user is in the center of the jet based on the jet trajectory center line model according to the position information of the user and the target air supply wind speed, a calculation formula of the jet trajectory center line model is: wherein, is the vertical drop height of the jet centerline relative to the outlet at a horizontal distance x from the outlet, and H and h are the user height and the air conditioner installation height, respectively, then ; x is the horizontal distance of the user relative to the air conditioner outlet; and is the equivalent diameter of the air conditioner outlet, defined as the area A of the outlet divided by the perimeter P , i.e. , with units of meters; a is the turbulence coefficient of the air conditioner outlet; and are constants; Archimedes number, which is calculated as: wherein, g is the gravitational acceleration; is the average indoor temperature; is the air supply temperature of the air conditioner outlet; is the indoor-outdoor temperature difference.

7. The control method of the air conditioner according to claim 6, characterized by, and The acquisition method is as follows: For different air conditioners, the experimental or simulation is used to obtain the jet trajectory center line position data of the air conditioner under different guide vane angles and air supply wind speed conditions, the Bayesian Markov chain Monte Carlo method is used for fitting, and the target guide vane angle and the target air supply wind speed corresponding to and .

8. The control method of the air conditioner according to any one of claims 1 to 7, characterized by, The step of adjusting the air conditioner according to the target air supply wind speed, the target swing angle, and the target air guide angle comprises: calculating a current wind loss of the air conditioner according to the target swing angle and the target air guide angle, and calculating and updating the target air supply wind speed according to the wind loss.

9. A control apparatus of an air conditioner including a louver that is rotatable in an up-down direction and a swing vane assembly that is swingable in a left-right direction, characterized by, The control device comprises: a first acquisition module configured to acquire position information of a user, and determine a target swing angle of the swing leaf assembly according to the position information of the user; a second acquisition module configured to calculate a target air supply wind speed of the air conditioner and a target air guide angle of the air guide panel based on a jet velocity model and a jet trajectory center line model of air supply of the air conditioner according to the position information of the user and a set blowing wind speed required by the user; a control module configured to adjust the air conditioner according to the target air supply wind speed, the target swing angle, and the target air guide angle.

10. An air conditioner comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, The processor implements the control method of the air conditioner according to any one of claims 1 to 8 when executing the computer program.

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