CN120488469A

CN120488469A - Air conditioner, control method and device thereof, storage medium and computer program product

Info

Publication number: CN120488469A
Application number: CN202510892307.5A
Authority: CN
Inventors: 迟继宏; 王晓倩; 何振健; 李木湖; 林金煌
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2025-06-30
Filing date: 2025-06-30
Publication date: 2025-08-15

Abstract

The present invention provides an air conditioner and its control method, device, storage medium, and computer program product. The method comprises: monitoring human physiological parameters of a user in an environment; calculating the user's comprehensive metabolic rate index based on the monitored human physiological parameters of the user in the environment; adjusting the air supply temperature and/or air supply humidity of the air conditioner based on the calculated user's comprehensive metabolic rate index; and/or controlling the upper and lower airflow of the air conditioner based on the calculated user's comprehensive metabolic rate index. The solution provided by the present invention can dynamically adjust the temperature and humidity in combination with human physiological parameters, and dynamically control the upper and lower airflow of an upper and lower air conditioner.

Description

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

Technical Field

The present invention relates to the field of control, and in particular, to an air conditioner, and a control method, apparatus, storage medium, and computer program product thereof.

Background

With the popularization of healthy building concepts, indoor dynamic thermal comfort regulation and control research is becoming an important subject in the field of human health. In the related art, the dynamic thermal comfort-based air conditioner control method generally has the problem of dimension singleness control, and single-influence parameter feedback adjustment mechanisms such as temperature, wind speed, humidity and the like are mostly adopted, and although individual researches introduce human metabolism rate parameters, cooperative analysis with key physiological indexes such as skin temperature, heart rate, blood flow and the like is lacking.

Disclosure of Invention

The present invention is directed to an air conditioner, a control method, a control device, a storage medium and a computer program product thereof, which overcome the above-mentioned drawbacks of the related art, and solve the problem that the control of the air conditioner lacks collaborative analysis with physiological indexes or the wind field dynamic prediction wind supply and human thermal state response cannot be established by adopting a fixed partition mode.

The invention provides a control method of an air conditioner, which comprises the steps of monitoring human physiological parameters of a user in an environment, calculating comprehensive metabolism rate indexes of the user according to the monitored human physiological parameters of the user in the environment, adjusting air supply temperature and/or air supply humidity of the air conditioner according to the calculated comprehensive metabolism rate indexes of the user, and/or controlling upper and lower air outlets of the air conditioner according to the calculated comprehensive metabolism rate indexes of the user.

Optionally, the physiological parameters of the user comprise at least one of user body surface microcirculation blood flow velocity variation, user skin surface temperature gradient variation, effective heat dissipation area of a human body, action intensity coefficient and heart rate variability index SDNN and RMSSD, and the comprehensive metabolism rate index of the user is calculated according to the monitored physiological parameters of the user in the environment, and comprises the steps of calculating metabolism rates related to blood flow and skin temperature according to the user body surface microcirculation blood flow velocity variation, the user skin surface temperature gradient variation, the effective heat dissipation area of the human body and the action intensity coefficient, calculating metabolism rates related to heart rate variability according to the heart rate variability index SDNN and the RMSSD, and calculating the comprehensive metabolism rate index of the user according to the calculated metabolism rates related to blood flow and skin temperature and the calculated metabolism rates related to heart rate variability.

Optionally, calculating the metabolic rate associated with blood flow and skin temperature according to the user body surface microcirculation blood flow velocity variation, the user skin surface temperature gradient variation, the effective heat dissipation area of the human body and the action intensity coefficient comprises calculating the metabolic rate MET _{radar device - thermal imaging} associated with blood flow and skin temperature according to the user body surface microcirculation blood flow velocity variation, the user skin surface temperature gradient variation, the effective heat dissipation area of the human body and the action intensity coefficient by using the following formula:

Wherein DeltaV _{Blood flow} is body surface microcirculation blood flow velocity variation, deltaT is a time interval for collecting blood flow velocity variation, deltaT _{Skin of a person} is skin surface temperature gradient variation, A _{Body surface} is effective heat dissipation area of human body, S _Action is action intensity coefficient, k1, k2 and k3 are weight coefficients, and/or calculating metabolic rate related to heart rate variability according to heart rate variability indexes SDNN and RMSSD, comprising calculating metabolic rate MET _HRV related to heart rate variability according to the heart rate variability indexes SDNN and RMSSD by using the following formula:

wherein SDNN is RR interval standard deviation, RMSSD is root mean square of adjacent RR interval difference value, and gamma and delta are weight coefficients;

and/or calculating an integrated metabolic rate indicator for the user from the calculated metabolic rate associated with blood flow and skin temperature and the calculated metabolic rate associated with heart rate variability, comprising:

Calculating an integrated metabolic rate index MET _{Comprehensive synthesis} of the user according to the metabolic rate MET _{radar device - thermal imaging} related to blood flow and skin temperature and the metabolic rate MET _HRV related to heart rate variability by using the following formula:

MET_{Comprehensive synthesis}＝α·MET_{radar device - thermal imaging}+β·MET_HRV+ε·S_Action

wherein α, β and ε are weight coefficients.

Optionally, adjusting the air supply temperature of the air conditioner according to the calculated comprehensive metabolic rate index of the user, wherein the adjusting comprises calculating the current set air supply temperature of the air conditioner according to the calculated comprehensive metabolic rate index of the user;

And/or adjusting the air supply humidity of the air conditioner according to the calculated comprehensive metabolic rate index of the user, wherein the method comprises the steps of calculating the current target air supply humidity of the air conditioner according to the calculated comprehensive metabolic rate index of the user, and adjusting the air supply humidity of the air conditioner according to the calculated target air supply humidity and the upper limit humidity and the lower limit humidity of a preset air supply humidity interval.

The method comprises the steps of obtaining the air supply temperature of the air conditioner when the air conditioner is started in a refrigerating mode to serve as a standard air supply temperature, calculating the current set air supply temperature of the air conditioner according to the standard air supply temperature, the current calculated comprehensive metabolism rate index of the user and the last calculated comprehensive metabolism rate index of the user, and/or adjusting the air supply temperature of the air conditioner according to the calculated upper limit temperature and lower limit temperature of a preset air supply temperature interval, wherein the air supply temperature of the air conditioner comprises the steps of adjusting the air supply temperature of the air conditioner according to the set air supply temperature when the set air supply temperature is smaller than or equal to the upper limit temperature of the preset air supply temperature interval and larger than the lower limit temperature of the preset air supply temperature interval, and adjusting the air supply temperature of the air conditioner according to the upper limit temperature of the preset air supply temperature interval when the set air supply temperature is larger than the upper limit temperature of the preset air supply temperature interval, and/or adjusting the air supply temperature of the air conditioner according to the lower limit temperature of the preset air supply temperature interval when the set air supply temperature is smaller than the preset air supply temperature interval.

Optionally, calculating the current set air supply temperature of the air conditioner according to the reference air supply temperature, the current calculated comprehensive metabolism rate index of the user and the last calculated comprehensive metabolism rate index of the user comprises calculating the current set air supply temperature of the air conditioner according to the reference air supply temperature, the current calculated comprehensive metabolism rate index of the user and the last calculated comprehensive metabolism rate index of the user by using the following formula:

T_{Setting up}＝T_Datum-a·(MET_{Comprehensive synthesis 2}-MET_{Comprehensive synthesis 1})

Wherein, T _{Setting up} represents the current set air supply temperature, T _Datum represents the reference air supply temperature, a is the temperature adjustment coefficient, MET _{Comprehensive synthesis 1} represents the user's comprehensive metabolic rate index calculated last time, and MET _{Comprehensive synthesis 2} represents the user's comprehensive metabolic rate index calculated currently.

Optionally, calculating the current target air supply humidity of the air conditioner according to the calculated comprehensive metabolic rate index of the user, wherein the current target air supply humidity of the air conditioner comprises obtaining the air relative humidity of the environment where the air supply temperature of the air conditioner is located after being adjusted as a standard air supply humidity, calculating the current target air supply humidity of the air conditioner according to the standard air supply humidity, the current calculated comprehensive metabolic rate index of the user and the last calculated comprehensive metabolic rate index of the user, and/or adjusting the air supply humidity of the air conditioner according to the calculated target air supply humidity and the upper limit humidity and the lower limit humidity of a preset air supply humidity interval, wherein the air supply humidity of the air conditioner comprises adjusting the air supply humidity of the air conditioner according to the target air supply humidity when the target air supply humidity is smaller than or equal to the upper limit humidity of the preset air supply humidity interval and the lower limit humidity of the preset air supply humidity interval when the target air supply humidity is larger than the upper limit humidity of the preset air supply humidity interval.

Optionally, calculating the current target air supply humidity of the air conditioner according to the reference air supply humidity, the current calculated comprehensive metabolism rate index of the user and the last calculated comprehensive metabolism rate index of the user comprises calculating the current target air supply humidity of the air conditioner according to the reference air supply humidity, the current calculated comprehensive metabolism rate of the user and the last calculated comprehensive metabolism rate of the user by using the following formula:

RH_{Target object}＝RH_Datum-b·(MET_{Comprehensive synthesis 2}-MET_{Comprehensive synthesis 1})

Wherein, RH _{Target object} represents the current target supply air humidity, RH _Datum represents the reference supply air humidity, b is the humidity adjustment coefficient, MET _{Comprehensive synthesis 1} represents the comprehensive metabolism rate index of the user obtained by the last calculation, and MET _{Comprehensive synthesis 2} represents the comprehensive metabolism rate index of the user obtained by the current calculation.

The method comprises the steps of calculating the air outlet quantity of an air outlet channel and the air outlet quantity of a lower air channel of the air conditioner according to the calculated comprehensive metabolic rate index of a user, controlling the air outlet of the air conditioner according to the calculated air outlet quantity of the air outlet channel and the calculated air outlet quantity of the lower air channel, and/or calculating the air outlet angle of the air outlet channel and the air outlet angle of the lower air channel of the air conditioner according to the calculated comprehensive metabolic rate index of the user, controlling the air outlet of the air conditioner according to the calculated air outlet angle of the air outlet channel and the air outlet angle of the lower air channel, and/or calculating the air outlet speed of the air conditioner according to the calculated comprehensive metabolic rate index of the user, and controlling the air outlet of the air conditioner according to the calculated air outlet speed of the air outlet channel.

Optionally, according to the calculated comprehensive metabolic rate index of the user, calculating the air outlet volume of the upper air duct and the air outlet volume of the lower air duct of the air conditioner comprises the steps of calculating the air outlet volume of the upper air duct and the air outlet volume of the lower air duct of the air conditioner according to the calculated comprehensive metabolic rate index of the user by utilizing the following air distribution formula:

Q_{Lower air duct}＝Q_{Total air volume}-Q_{Upper air duct}

Wherein Q _{Total air volume} represents total air quantity, Q _{Upper air duct} represents air outlet quantity of an upper air duct, Q _{Lower air duct} represents air outlet quantity of a lower air duct, MET _{Comprehensive synthesis 2} represents currently calculated comprehensive metabolism rate index of the user, MET _{Comprehensive rest} represents comprehensive metabolism rate index of the user in a resting state, MET _{Comprehensive intermediate} represents comprehensive metabolism rate index of the user in middle active state, and/or calculates air outlet angle of the upper air duct and air outlet angle of the lower air duct of the air conditioner according to the calculated comprehensive metabolism rate index of the user, comprising calculating air outlet angle of the upper air duct and air outlet angle of the lower air duct of the air conditioner according to the calculated comprehensive metabolism rate index of the user by using the following formula:

θ_{Upper air duct}＝θ₁·tanh(δ·(MET_{Comprehensive synthesis 2}-MET_{Comprehensive standing}))+σ

Wherein, θ _{Upper air duct} represents the air outlet angle of the upper air duct, θ _{Lower air duct} represents the air outlet angle of the lower air duct, θ ₁ is the maximum pitching adjustment angle, δ represents the metabolic rate change sensitivity, θ ₂ represents the anti-direct blowing protection angle, θ ₃ is the elevation angle for enabling the air flow to reach the preset distance, MET _{Comprehensive synthesis 2} represents the currently calculated comprehensive metabolic rate index of the user, MET _{Comprehensive standing} represents the total metabolic rate index of the user in a standing state, MET _{Comprehensive intermediate} represents the comprehensive metabolic rate index of the user in an intermediate active state, σ is the angle adjustment coefficient, and/or the up-down air outlet wind speed of the air conditioner is calculated according to the calculated comprehensive metabolic rate index of the user, comprising:

when the comprehensive metabolic rate index of the user is smaller than or equal to a preset value, calculating the up-down air outlet wind speed of the air conditioner according to the following formula:

v=A₁+B₁MET_{Comprehensive synthesis}

Wherein A ₁ is the basic wind speed when the comprehensive metabolism rate index MET _{Comprehensive synthesis} is smaller than or equal to a preset value, and B ₁ is the increasing amplitude of the comprehensive metabolism rate index MET _{Comprehensive synthesis} when the comprehensive metabolism rate index MET _{Comprehensive synthesis} is increased by 1 unit of air supply wind speed;

when the comprehensive metabolism rate index of the user is larger than a preset value, calculating the up-down air outlet wind speed of the air conditioner according to the following formula:

v=A₂+B₂(MET_{Comprehensive synthesis}-C)

Wherein, A ₂ is the basic wind speed when the comprehensive metabolism rate index MET _{Comprehensive synthesis} is larger than the preset value C, B ₂ is the increasing amplitude of the comprehensive metabolism rate index MET _{Comprehensive synthesis} by 1 unit of air supply wind speed, and C is the preset value.

The invention further provides a control device of the air conditioner, which comprises a monitoring unit, a calculating unit, an adjusting unit and/or a control unit, wherein the monitoring unit is used for monitoring the physiological parameters of a user in the environment, the calculating unit is used for calculating the comprehensive metabolism rate index of the user according to the physiological parameters of the user in the environment monitored by the monitoring unit, the adjusting unit is used for adjusting the air supply temperature and/or the air supply humidity of the air conditioner according to the comprehensive metabolism rate index of the user calculated by the calculating unit, and/or the control unit is used for controlling the air outlet of the air conditioner according to the comprehensive metabolism rate index of the user calculated by the calculating unit.

Optionally, the physiological parameters of the user comprise at least one of a user body surface microcirculation blood flow velocity variation, a user skin surface temperature gradient variation, a human body effective heat dissipation area, an action intensity coefficient and a heart rate variability index SDNN and RMSSD, the calculating unit calculates an integrated metabolism rate index of the user according to the human body physiological parameters of the user in the environment monitored by the monitoring unit, wherein the integrated metabolism rate index of the user comprises a metabolism rate related to blood flow and skin temperature calculated according to the user body surface microcirculation blood flow velocity variation, the user skin surface temperature gradient variation, the human body effective heat dissipation area and the action intensity coefficient, a metabolism rate related to heart rate variability is calculated according to the heart rate variability index SDNN and RMSSD, and the integrated metabolism rate index of the user is calculated according to the calculated metabolism rate related to blood flow and skin temperature and the metabolism rate related to heart rate variability.

Optionally, the calculating unit calculates the metabolic rate related to the blood flow and the skin temperature according to the change amount of the micro-circulation blood flow speed of the user body surface, the change amount of the temperature gradient of the skin surface of the user, the effective heat dissipation area of the human body and the action intensity coefficient, and comprises calculating the metabolic rate MET _{radar device - thermal imaging} related to the blood flow and the skin temperature according to the change amount of the micro-circulation blood flow speed of the user body surface, the change amount of the temperature gradient of the skin surface of the user, the effective heat dissipation area of the human body and the action intensity coefficient by using the following formula:

Wherein DeltaV _{Blood flow} is body surface microcirculation blood flow velocity variation, deltaT is a time interval for collecting blood flow velocity variation, deltaT _{Skin of a person} is skin surface temperature gradient variation, A _{Body surface} is effective heat dissipation area of human body, S _Action is action intensity coefficient, k1, k2 and k3 are weight coefficients, and/or the calculating unit calculates metabolic rate related to heart rate variability according to heart rate variability indexes SDNN and RMSSD, comprising calculating metabolic rate MET _HRV related to heart rate variability according to the heart rate variability indexes SDNN and RMSSD by using the following formula:

Wherein SDNN is RR interval standard deviation, RMSSD is root mean square of adjacent RR interval difference values, gamma and delta are weight coefficients, and/or the calculation unit calculates the comprehensive metabolism rate index of the user according to the calculated metabolism rate related to blood flow and skin temperature and the calculated metabolism rate related to heart rate variability, wherein the calculation unit calculates the comprehensive metabolism rate index MET _{Comprehensive synthesis} of the user according to the metabolism rate MET _{radar device - thermal imaging} related to blood flow and skin temperature and the metabolism rate MET _HRV related to heart rate variability by using the following formula:

wherein α, β and ε are weight coefficients.

The adjusting unit is used for adjusting the air supply temperature of the air conditioner according to the comprehensive metabolism rate index of the user calculated by the calculating unit, and comprises the steps of calculating the current set air supply temperature of the air conditioner according to the calculated comprehensive metabolism rate index of the user, adjusting the air supply temperature of the air conditioner according to the calculated set air supply temperature and the upper limit temperature and the lower limit temperature of a preset air supply temperature interval, and/or adjusting the air supply humidity of the air conditioner according to the calculated comprehensive metabolism rate index of the user, wherein the adjusting unit comprises the steps of calculating the current target air supply humidity of the air conditioner according to the calculated comprehensive metabolism rate index of the user, and adjusting the air supply humidity of the air conditioner according to the calculated target air supply humidity and the upper limit humidity and the lower limit humidity of the preset air supply humidity interval.

The adjusting unit is used for adjusting the air supply temperature of the air conditioner according to the calculated upper limit temperature and the lower limit temperature of the preset air supply temperature interval, and comprises the steps of adjusting the air supply temperature of the air conditioner according to the set air supply temperature when the set air supply temperature is smaller than or equal to the upper limit temperature of the preset air supply temperature interval and larger than or equal to the lower limit temperature of the preset air supply temperature interval, and adjusting the air supply temperature of the air conditioner according to the upper limit temperature of the preset air supply temperature interval when the set air supply temperature is larger than the upper limit temperature of the preset air supply temperature interval.

Optionally, the adjusting unit calculates the current set air supply temperature of the air conditioner according to the reference air supply temperature, the current calculated comprehensive metabolic rate index of the user and the last calculated comprehensive metabolic rate index of the user, and the current set air supply temperature of the air conditioner is calculated according to the reference air supply temperature, the current calculated comprehensive metabolic rate index of the user and the last calculated comprehensive metabolic rate index of the user by using the following formula:

The adjusting unit is used for calculating the current target air supply humidity of the air conditioner according to the calculated comprehensive metabolic rate index of the user, and/or is used for adjusting the air supply humidity of the air conditioner according to the calculated target air supply humidity and the preset upper limit humidity and the preset lower limit humidity of an air supply humidity interval, and comprises the steps of adjusting the air supply humidity of the air conditioner according to the target air supply humidity when the target air supply humidity is smaller than or equal to the upper limit humidity of the preset air supply humidity interval and is larger than or equal to the lower limit humidity of the preset air supply humidity interval, and adjusting the air supply humidity of the air conditioner according to the preset upper limit humidity of the air supply humidity interval when the target air supply humidity is larger than the upper limit humidity of the preset air supply humidity interval.

Optionally, the adjusting unit calculates the current target air supply humidity of the air conditioner according to the reference air supply humidity, the current calculated comprehensive metabolic rate index of the user and the last calculated comprehensive metabolic rate index of the user, and the current target air supply humidity of the air conditioner is calculated according to the reference air supply humidity, the current calculated comprehensive metabolic rate of the user and the last calculated comprehensive metabolic rate of the user by using the following formula:

The control unit is used for controlling the upper air outlet and the lower air outlet of the air conditioner according to the comprehensive metabolic rate index of the user calculated by the calculation unit, and comprises the steps of calculating the upper air outlet and the lower air outlet of the air conditioner according to the calculated comprehensive metabolic rate index of the user, controlling the upper air outlet and the lower air outlet of the air conditioner according to the calculated upper air outlet and the lower air outlet of the air conditioner, and/or calculating the upper air outlet angle and the lower air outlet angle of the air conditioner according to the calculated comprehensive metabolic rate index of the user, controlling the upper air outlet and the lower air outlet of the air conditioner according to the calculated upper air outlet angle and the calculated lower air outlet angle of the air conditioner, and/or calculating the upper air outlet and the lower air outlet of the air conditioner according to the calculated comprehensive metabolic rate index of the user, and controlling the upper air outlet and the lower air outlet of the air conditioner according to the calculated upper air outlet and the calculated lower air outlet.

Optionally, the control unit calculates the air outlet volume of the upper air duct and the air outlet volume of the lower air duct of the air conditioner according to the calculated comprehensive metabolic rate index of the user, and calculates the air outlet volume of the upper air duct and the air outlet volume of the lower air duct of the air conditioner according to the calculated comprehensive metabolic rate index of the user by using the following air distribution formula:

Q_{Lower air duct}＝Q_{Total air volume}-Q_{Upper air duct}

Wherein Q _{Total air volume} represents total air quantity, Q _{Upper air duct} represents air outlet quantity of an upper air duct, Q _{Lower air duct} represents air outlet quantity of a lower air duct, MET _{Comprehensive synthesis 2} represents currently calculated comprehensive metabolism rate index of the user, MET _{Comprehensive rest} represents comprehensive metabolism rate index of the user in a resting state, MET _{Comprehensive intermediate} represents comprehensive metabolism rate index of the user in middle active state, and/or the control unit calculates an upper air duct air outlet angle and a lower air duct air outlet angle of the air conditioner according to the calculated comprehensive metabolism rate index of the user, comprising calculating the upper air duct air outlet angle and the lower air duct air outlet angle of the air conditioner according to the calculated comprehensive metabolism rate index of the user by using the following formula:

Wherein, θ _{Upper air duct} represents the air outlet angle of the upper air duct, θ _{Lower air duct} represents the air outlet angle of the lower air duct, θ ₁ is the maximum pitching adjustment angle, δ represents the metabolic rate change sensitivity, θ ₂ represents the anti-direct blowing protection angle, θ ₃ is the elevation angle for enabling the air flow to reach the preset distance, MET _{Comprehensive synthesis 2} represents the currently calculated comprehensive metabolic rate index of the user, MET _{Comprehensive standing} represents the total metabolic rate index of the user in a standing state, MET _{Comprehensive intermediate} represents the comprehensive metabolic rate index of the user in an intermediate active state, σ is the angle adjustment coefficient, and/or the control unit calculates the up-down air outlet wind speed of the air conditioner according to the calculated comprehensive metabolic rate index of the user, wherein, when the comprehensive metabolic rate index of the user is smaller than or equal to the preset value, the up-down air outlet wind speed of the air conditioner is calculated according to the following formula:

v=A₁+B₁MET_{Comprehensive synthesis}

wherein A ₁ is a basic wind speed when the comprehensive metabolism rate index MET _{Comprehensive synthesis} is smaller than or equal to a preset value, B ₁ is the increasing amplitude of the air supply wind speed when the comprehensive metabolism rate index MET _{Comprehensive synthesis} is increased by 1 unit, and when the comprehensive metabolism rate index of the user is larger than the preset value, the up and down air outlet wind speeds of the air conditioner are calculated according to the following formula:

v=A₂+B₂(MET_{Comprehensive synthesis}-C)

In a further aspect the invention provides a storage medium having stored thereon a computer program which when executed by a processor performs the steps of any of the methods described above.

In a further aspect the invention provides an air conditioner comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the processor implementing the steps of any of the methods described hereinbefore when the program is executed.

In still another aspect, the present invention provides an air conditioner, including a control device of any one of the foregoing air conditioners.

In a further aspect the invention provides a computer program product comprising a computer program which, when executed by a processor, implements the steps of any of the methods described above.

According to the technical scheme of the invention, a model of association between human physiological parameters (such as skin temperature, heart rate and blood flow) and human metabolic rate is established, comprehensive metabolic rate indexes are calculated in real time, temperature and humidity cooperative control is carried out, the air quantity, air speed and air direction of the upper and lower air outlet type air conditioner are dynamically adjusted according to the comprehensive metabolic rate indexes calculated in real time, the temperature and humidity can be dynamically adjusted by combining the human physiological parameters, the upper and lower air outlets of the upper and lower air outlet type air conditioner are dynamically controlled, and a personalized and accurate solution is provided for dynamic thermal comfort air conditioner control.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:

fig. 1 is a schematic diagram of a control method of an air conditioner according to an embodiment of the present invention;

FIG. 2 is a flowchart showing steps of one embodiment of the steps of calculating an index of the user's integrated metabolic rate based on the monitored physiological parameters of the user's body in the environment;

FIG. 3 is a flowchart showing steps for adjusting the supply air temperature of the air conditioner according to the calculated index of the user's metabolic rate;

FIG. 4 is a flowchart showing steps for adjusting the humidity of the air supplied by the air conditioner according to the calculated index of the user's integrated metabolic rate;

FIG. 5 is a flowchart showing a specific embodiment of the steps for controlling the up and down outlet of the air conditioner according to the calculated index of the user's integrated metabolic rate;

FIG. 6 is a flowchart illustrating a control method of an air conditioner according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a calculation flow of an integrated metabolic rate index in the control method of an air conditioner according to the present invention;

fig. 8 is a schematic flow chart of coordinated control of temperature and humidity of an air conditioner in the control method of the air conditioner provided by the invention;

FIG. 9 is a schematic diagram of a dynamic up-down air outlet control flow in the control method of the air conditioner according to the present invention;

fig. 10 is a block diagram of an embodiment of a control device for an air conditioner according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments of the present invention and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The dynamic thermal comfort-based air conditioner control method in the related art has two general problems, namely, the control dimension is single, the existing solution mostly adopts a single-influence parameter feedback adjustment mechanism such as temperature, wind speed, humidity and the like, although individual researches are introduced into human metabolism rate parameters, the cooperative analysis of key physiological indexes such as skin temperature, heart rate, blood flow and the like is lacking, the air supply strategy is static, the existing dynamic thermal comfort control method mostly relies on a PMV-PPD model, the environment regulation and control are realized by adjusting 6 basic parameters such as air temperature, air flow and the like, the air supply system mostly adopts a fixed partition mode, and a closed-loop mechanism for dynamically predicting the air supply and human thermal state response of a wind field cannot be established.

The invention provides a control method of an air conditioner.

Fig. 1 is a schematic diagram of a control method of an air conditioner according to an embodiment of the present invention.

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

Step S110, monitoring the physiological parameters of the user in the environment.

Specifically, the physiological parameters of the human body of the user in the environment are monitored every preset time. The physiological parameters of the user comprise at least one of a user body surface microcirculation blood flow velocity (in acquisition time) variable DeltaV _{Blood flow}, a user skin surface temperature gradient variable DeltaT _{Skin of a person}, a human body effective heat dissipation area A _{Body surface}, an action intensity coefficient S _Action and heart rate variability indexes SDNN and RMSSD.

The change amount DeltaV _{Blood flow} of the microcirculation blood flow velocity of the body surface of the user can be obtained by monitoring superficial blood vessels (such as fingertips, necks and the like) through millimeter wave radar. For example, the blood flow velocity before 1min and the blood flow velocity at the current time are monitored, and the difference between the blood flow velocities at the two times is the body surface microcirculation blood flow velocity change amount DeltaV _{Blood flow}, for example, the millimeter wave radar monitors that the hand blood flow velocity is increased from 2.0mm/s to 3.5mm/s (Deltat=10s).

The change in the skin surface temperature gradient ΔT _{Skin of a person} of the user may specifically be the difference between the skin surface temperature acquired at the previous moment and the skin surface temperature at the current moment. The skin surface temperature value can be specifically an average value of skin surface temperatures of all parts of a human body, and can be obtained by scanning key areas (such as forehead, chest, limbs and the like) of the whole body through an infrared thermal imager, and then the average value is obtained.

The effective heat dissipation area A _{Body surface} of the human body can be estimated based on the height and weight, for example, A _{Body surface}＝0.202×H^0.725×W^0.425 is calculated by a DuBois formula, wherein H is the height and W is the weight.

The motion intensity coefficient S _Action can be used for gesture recognition through UWB positioning+rgb cameras, and then mapped to standard values, and different motions correspond to different standard values, for example, S _Action =1.0 during sitting, S _Action =2.0 during walking, and S _Action =3.5 during running or jumping.

The heart rate variability index SDNN and RMSSD are calculated, firstly, the heart beat interval (RR interval) of a user is acquired through a millimeter wave radar, the SDNN index is the standard deviation of all normal heart beat intervals, the overall autonomic nerve tension is reflected, the RMSSD index is the root mean square of adjacent RR interval difference values, and the parasympathetic nerve (vagal nerve) activity is represented, wherein the formulas are as follows:

where RRi represents the i-th RR interval, in ms; Represents the average of all RR intervals in ms, and N represents the total number of RR intervals, e.g. within an analysis window.

Step S120, calculating the comprehensive metabolic rate index of the user according to the monitored physiological parameters of the user in the environment.

FIG. 2 is a flowchart showing steps of one embodiment of the steps of calculating an index of the user's integrated metabolic rate based on the monitored physiological parameters of the user's body in the environment.

As shown in fig. 2, step S120 includes step S121, step S122, and step S123.

Step S121, calculating metabolic rate MET radar-thermal imaging associated with blood flow and skin temperature according to the user body surface microcirculation blood flow velocity variation Δv _{Blood flow}, the user skin surface temperature gradient variation Δt _{Skin of a person}, the human body effective heat dissipation area a _{Body surface} and the action intensity coefficient S _Action.

Specifically, according to the user body surface microcirculation blood flow velocity variation Δv _{Blood flow}, the user skin surface temperature gradient variation Δt _{Skin of a person}, the human body effective heat dissipation area a _{Body surface} and the action intensity coefficient S _Action, the metabolic rate MET _{radar device - thermal imaging} associated with blood flow and skin temperature is calculated using the following formula:

Wherein DeltaV _{Blood flow} is the change amount of the body surface microcirculation blood flow velocity, the unit mm/s, deltat is the time interval for collecting the blood flow velocity change, and the unit s; for example, if the acquisition is performed once at intervals of 1min, Δt=60, Δt _{Skin of a person} is the skin surface temperature gradient change amount, the unit is at the temperature of the skin, a _{Body surface} is the effective heat dissipation area of the human body, the unit is m ²;S_Action is the action intensity coefficient, and k1, k2 and k3 are weight coefficients, and can be obtained through machine learning calibration or experimental data fitting.

The calibration of the weight coefficient by machine learning mainly comprises the following steps:

1. Collecting data, namely collecting blood flow velocity variation (DeltaV _{Blood flow}) measured by a millimeter wave radar, skin temperature gradient (DeltaT _{Skin of a person}/A_{Body surface}) measured by a thermal imager, UWB positioning and action intensity coefficient S _Action identified by an RGB camera, real metabolic rate, user age, BMI and environment temperature and humidity.

2. Training a model, namely inputting the collected data by using a gradient lifting regression tree (GBRT) model, outputting a predicted metabolic rate, and minimizing the mean square error of the predicted value and the real metabolic rate.

After model training, the user blood flow velocity variable quantity (DeltaV _{Blood flow}), skin temperature gradient (DeltaT _{Skin of a person}/A_{Body surface}), action intensity coefficient S _Action and user age and BMI are input, the model automatically calculates weight proportion through feature importance analysis, and dynamically adapted weight coefficients (k 1, k2 and k 3) are output.

For example, when the millimeter wave radar monitors that the blood flow speed of the hand rises from 2.0mm/S to 3.5mm/S, the acquisition interval time Δt=10s, the thermal imaging shows the trunk temperature gradient Δt _{Skin of a person}＝0.8℃,A_{Body surface}＝1.6m², the camera recognizes that the user is in a standing state, that is, the action intensity coefficient S _Action =1.2, the weight coefficient k ₁＝0.12,k₂＝0.8,k₃ =0.5 is obtained through machine learning calibration or experimental data fitting, and the metabolic rate MET _{radar device - thermal imaging} related to the blood flow and the skin temperature is:

Step S122, calculating the metabolic rate MET _HRV associated with the heart rate variability according to the heart rate variability index SDNN and RMSSD.

In a specific embodiment, the metabolic rate MET _HRV associated with heart rate variability is calculated from the heart rate variability index SDNN and RMSSD using the following formula:

The SDNN is RR interval standard deviation, the unit ms reflects the activity of the sympathetic nerves, the RMSSD is root mean square of adjacent RR interval difference values, the unit ms represents parasympathetic nerve regulation, and the gamma and delta are weight coefficients and can be calibrated through multiple regression.

For example, sdnn=32 ms, rmssd=25 ms, γ=0.15, δ=0.08, then MET _HRV, which correlates heart rate variability with metabolic rate, is:

Step S123, calculating an integrated metabolic rate index MET _{Comprehensive synthesis} of the user according to the calculated metabolic rate MET _{radar device - thermal imaging} associated with blood flow and skin temperature and the calculated metabolic rate MET _HRV associated with heart rate variability.

In a specific embodiment, the comprehensive metabolic rate index MET _{Comprehensive synthesis} of the user is calculated according to the metabolic rate MET _{radar device - thermal imaging} associated with blood flow and skin temperature and the metabolic rate MET _HRV associated with heart rate variability by using the following formula:

The alpha, beta and epsilon are weight coefficients, and dynamic weight coefficients can be obtained through experimental data fitting or optimized based on a random forest model. For example, α=0.6, β=0.3, ε=0.1, and MET _{radar device - thermal imaging}＝1.018,MET_HRV＝0.08,S_Action =1.2 calculated as described above, the user integrated metabolic rate index MET _{Comprehensive synthesis} is:

MET_{Comprehensive synthesis}=0.6·1.018+0.3·0.08+0.1·1.2=0.2074368

By the method, the comprehensive metabolic rate index MET _{Comprehensive synthesis} of the user can be calculated in real time.

And step S130, adjusting the air supply temperature and/or the air supply humidity of the air conditioner according to the currently calculated comprehensive metabolic rate index of the user.

FIG. 3 is a flowchart showing steps of one embodiment of the step of adjusting the supply air temperature of the air conditioner according to the calculated index of the user's integrated metabolic rate.

As shown in fig. 3, the step of adjusting the supply air temperature of the air conditioner according to the calculated comprehensive metabolic rate index of the user may specifically include step S131 and step S132.

Step S131, calculating the current set air supply temperature of the air conditioner according to the calculated comprehensive metabolic rate index of the user.

The method comprises the steps of obtaining the air supply temperature of the air conditioner when the air conditioner is started to operate in a refrigeration mode as a reference air supply temperature, and calculating the current set air supply temperature of the air conditioner according to the reference air supply temperature, the current calculated comprehensive metabolic rate index of the user and the last calculated comprehensive metabolic rate index of the user. The comprehensive metabolism rate index of the user is calculated at present, namely, the comprehensive metabolism rate index MET _{Comprehensive synthesis 2} of the user is calculated according to the monitored physiological parameters of the user in the environment, and the comprehensive metabolism rate index of the user is calculated last, namely, the comprehensive metabolism rate index MET _{Comprehensive synthesis 1} of the user is calculated last according to the monitored physiological parameters of the user in the environment.

In a specific embodiment, according to the reference air supply temperature, the currently calculated comprehensive metabolic rate index of the user and the last calculated comprehensive metabolic rate index of the user, the current set air supply temperature of the air conditioner is calculated by using the following formula:

Wherein T _{Setting up} represents the current set air supply temperature, T _Datum represents the reference air supply temperature, a is a temperature adjustment coefficient, the value range comprises, for example, 0-5 ℃ per MET, MET represents the unit of an integrated metabolic rate index, MET _{Comprehensive synthesis 1} represents the integrated metabolic rate index of the user obtained by the last calculation (last moment), namely, the integrated metabolic rate index obtained by the last calculation by monitoring the physiological parameters of the user in the environment, and MET _{Comprehensive synthesis 2} represents the integrated metabolic rate index of the user obtained by the current calculation (current moment), namely, the integrated metabolic rate index obtained by the current calculation by monitoring the physiological parameters of the user in the environment.

Step S132, adjusting the air supply temperature of the air conditioner according to the calculated set air supply temperature and the upper limit temperature and the lower limit temperature of the preset air supply temperature interval.

The preset air supply temperature interval may specifically be a preset thermal comfort temperature interval. The thermal comfort temperature interval is a dynamic temperature interval. For example, different seasons correspond to different air supply temperature ranges, for example, 23-26 ℃ in summer and 20-24 ℃ in winter.

The air conditioner comprises a preset air supply temperature zone, an air conditioner, a set air supply temperature, a lower limit temperature and an air conditioner, wherein the air supply temperature of the air conditioner is adjusted according to the set air supply temperature when the set air supply temperature is smaller than or equal to the upper limit temperature of the preset air supply temperature zone and larger than or equal to the lower limit temperature of the preset air supply temperature zone, the air supply temperature of the air conditioner is adjusted according to the upper limit temperature of the preset air supply temperature zone when the set air supply temperature is larger than the upper limit temperature of the preset air supply temperature zone, and the air supply temperature of the air conditioner is adjusted according to the lower limit temperature of the preset air supply temperature zone when the set air supply temperature is smaller than the lower limit temperature of the preset air supply temperature zone.

For example, the lower limit temperature of the dynamic thermal comfort temperature interval of the user is Tmin, the upper limit temperature is Tmax, the magnitudes of T _{Setting up}, tmax and Tmin are judged, when T _{Setting up} is smaller than or equal to Tmax, the air supply temperature of the air conditioner is proved to be lower than the upper limit temperature of the dynamic thermal comfort interval, and then the magnitudes of T _{Setting up} and Tmin can be further judged. When T _{Setting up} is greater than or equal to Tmin, the air-conditioner air supply temperature is proved to be above the lower limit of the dynamic thermal comfort zone temperature, namely, the air-conditioner air supply temperature is in the air supply temperature range of the dynamic thermal comfort zone, the air-conditioner air supply temperature can be directly adjusted according to the T _{Setting up} temperature at the moment, when T _{Setting up} is not greater than or equal to (less than) Tmin, the air-conditioner air supply temperature is proved to be less than the lower limit of the dynamic thermal comfort zone temperature, discomfort can be caused by the fact that the temperature is too low, the air-conditioner air supply temperature needs to be at the lower limit of the dynamic thermal comfort zone, namely, T _{Setting up} =Tmin, and the air-conditioner air supply temperature at the moment is adjusted to be Tmin ℃.

When T _{Setting up} is not less than (greater than) Tmax, it is proved that the air-conditioning air supply temperature exceeds the upper limit of the air supply temperature in the dynamic thermal comfort zone, and the air-conditioning air supply temperature is not comfortable for the user to blow, so that the air-conditioning air supply temperature is required to be the upper limit of the dynamic thermal comfort zone, that is, T _{Setting up} =tmax, and the air-conditioning air supply temperature is adjusted to Tmax ℃.

If the temperature of the air-conditioning air supply is lower than the temperature of the air-conditioning air supply at the previous moment, the frequency of the compressor is increased, the opening of the indoor valve is increased until the current air-conditioning air-supply temperature is regulated to be equal to T _{Setting up}, and if the temperature of the air-conditioning air-supply is higher than the temperature of the air-conditioning air-supply at the previous moment, the frequency of the compressor is reduced, the opening of the indoor valve is reduced until the current air-conditioning air-supply temperature is regulated to be equal to T _{Setting up}.

FIG. 4 is a flowchart showing steps of one embodiment of the step of adjusting the supply air humidity of the air conditioner according to the calculated index of the user's integrated metabolic rate.

As shown in fig. 4, the step of adjusting the supply air humidity of the air conditioner according to the calculated comprehensive metabolic rate index of the user may specifically include step S133 and step S134.

And step S133, calculating the current target air supply humidity of the air conditioner according to the calculated comprehensive metabolic rate index of the user.

The method comprises the steps of obtaining the relative humidity of air in the environment after the air supply temperature of the air conditioner is adjusted to serve as a reference air supply humidity, and calculating the current target air supply humidity of the air conditioner according to the reference air supply humidity, the current calculated comprehensive metabolic rate index of the user and the last calculated comprehensive metabolic rate index of the user. The comprehensive metabolism rate index of the user is calculated at present, namely, the comprehensive metabolism rate index MET _{Comprehensive synthesis 2} of the user is calculated according to the monitored physiological parameters of the user in the environment, and the comprehensive metabolism rate index of the user is calculated last, namely, the comprehensive metabolism rate index MET _{Comprehensive synthesis 1} of the user is calculated last according to the monitored physiological parameters of the user in the environment.

In a specific embodiment, according to the reference supply air humidity, the current calculated comprehensive metabolism rate of the user and the last calculated comprehensive metabolism rate of the user, the current target supply air humidity of the air conditioner is calculated by using the following formula:

The RH _{Target object} represents the current target supply air humidity, the RH _Datum represents the reference supply air humidity, and b is a humidity adjustment coefficient, and the value range may include, for example, 1-20%/MET, where MET _{Comprehensive synthesis 1} represents the comprehensive metabolism rate index of the user calculated last (last time), that is, the comprehensive metabolism rate index calculated last through monitoring the physiological parameters of the user in the environment, and MET _{Comprehensive synthesis 2} represents the comprehensive metabolism rate index of the user calculated currently (at the current time), that is, the comprehensive metabolism rate index calculated currently through monitoring the physiological parameters of the user in the environment.

And step S134, adjusting the air supply humidity of the air conditioner according to the calculated target air supply humidity and the upper limit humidity and the lower limit humidity of a preset air supply humidity interval.

The preset air supply humidity interval can be specifically a preset thermal comfort humidity interval. The thermal comfort humidity interval is a dynamic humidity interval.

The air conditioner comprises a target air supply humidity, an air conditioner and an air conditioner, wherein the target air supply humidity is smaller than or equal to the upper limit humidity of a preset air supply humidity interval and larger than or equal to the lower limit humidity of the preset air supply humidity interval, the air conditioner is adjusted according to the target air supply humidity, the air conditioner is adjusted according to the upper limit humidity of the preset air supply humidity interval when the target air supply humidity is larger than the upper limit humidity of the preset air supply humidity interval, and the air conditioner is adjusted according to the lower limit humidity of the preset air supply humidity interval when the target air supply humidity is smaller than the lower limit humidity of the preset air supply temperature humidity.

For example, the user has a lower limit humidity of RHmin and an upper limit humidity of RHmax, and judges the sizes of RH _{Target object}, RHmax and RHmin, when RH _{Target object} is less than or equal to RHmax, it is proved that the humidity of the air-conditioning air supply is below the upper limit humidity of the dynamic thermal comfort region, and further the sizes of RH _{Target object} and RHmin can be further judged,

When RH _{Target object} is larger than or equal to RHmin, the humidity of the air-conditioner air supply is proved to be above the lower limit of the humidity of the dynamic thermal comfort zone at the moment, namely, the humidity of the air-conditioner air supply is in the range of the humidity of the dynamic thermal comfort zone at the moment, the humidity of the air-conditioner air supply can be directly regulated according to RH _{Target object} at the moment,

When RH _{Target object} is not greater than (less than) RHmin, it is proved that the humidity of the air-conditioning air supply is less than the lower limit of the humidity of the dynamic thermal comfort zone, and the humidity is too low, so that the air is dry, and the user is uncomfortable, and the humidity of the air-conditioning air supply is about to be the humidity of the lower limit of the dynamic thermal comfort zone, namely RH _{Target object} = RHmin, and the humidity of the air-conditioning air supply is adjusted to RHmin%.

When RH _{Target object} is not less than (greater than) RHmax, it is proved that the humidity of the air-conditioning air supply exceeds the upper limit of the humidity of the air-conditioning air supply in the dynamic thermal comfort zone, and the user feels wet due to the fact that the humidity is too high, so that discomfort is obvious, the humidity of the air-conditioning air supply at the moment needs to be the humidity of the upper limit of the dynamic thermal comfort zone, namely RH _{Target object} = RHmax, and the humidity of the air-conditioning air supply at the moment is adjusted to be RHmax%.

The cooperative control of the temperature and the humidity of the air conditioner can be driven through the control flow. For example, assuming that the indoor reference supply air temperature is 26 ℃, the humidity is 50%, the comprehensive metabolic rate index MET _{Comprehensive synthesis 1} =0.15 calculated by the monitoring parameter at the previous moment, the comprehensive metabolic rate index MET _{Comprehensive synthesis 2} =0.35 calculated by the monitoring parameter at the previous moment, the temperature adjustment coefficient a is 5, the humidity adjustment coefficient b is 20, the setting of t=26-5 (0.35-0.15) =25 ℃, the setting of RH _{Target object} =50% -20 (0.35-0.15) =46%, the air conditioner supply air temperature is adjusted to 25 ℃ from the reference 26 ℃, and the humidity of the supply air is adjusted to 46% from the reference 50%, so as to accelerate sweat evaporation cooling.

The humidifying module and the dehumidifying module of the air conditioning system are utilized, and the humidity sensor is utilized for monitoring in real time to adjust the air supply humidity.

And step 140, controlling the up-down air outlet of the air conditioner according to the calculated comprehensive metabolic rate index of the user.

Specifically, the air conditioner is an up-down air outlet air conditioner, and the up-down air outlet of the air conditioner can be controlled according to the calculated comprehensive metabolic rate index of the user. More specifically, according to the calculated comprehensive metabolic rate index of the user, the air outlet volume of the upper air channel and the air outlet volume of the lower air channel of the air conditioner are controlled, and/or the air outlet angle of the upper air channel and the air outlet angle of the lower air channel of the air conditioner are controlled, and/or the air outlet speed of the upper air channel and the lower air channel of the air conditioner is controlled.

FIG. 5 is a flowchart showing a specific embodiment of the steps for controlling the up and down outlet of the air conditioner according to the calculated index of the user's integrated metabolic rate. As shown in fig. 5, step S140 includes step S141 and step S142, and/or includes step S143 and step S144, and/or includes step S145 and step S146.

Step S141, calculating the air outlet quantity of the upper air channel and the air outlet quantity of the lower air channel of the air conditioner according to the calculated comprehensive metabolic rate index of the user.

And step S142, controlling the up-and-down air outlet of the air conditioner according to the calculated air outlet volume of the up-air channel and the calculated air outlet volume of the down-air channel.

In a specific embodiment, according to the calculated comprehensive metabolic rate index of the user, the air outlet air volume of the upper air duct and the air outlet air volume of the lower air duct of the air conditioner are calculated by using the following air volume distribution formula:

Q_{Lower air duct}＝Q_{Total air volume}-Q_{Upper air duct}

The sum of the air volumes of the upper air duct and the lower air duct is the total air volume, MET _{Comprehensive synthesis 2} represents the comprehensive metabolism rate index of the user obtained by current calculation, namely, the comprehensive metabolism rate index MET _{Comprehensive synthesis 2},MET_{Comprehensive rest} of the user obtained by calculation according to the monitored physiological parameters of the user in the environment, which is the middle state of the rest state and the very active state, wherein the different active states correspond to different action intensity coefficients, namely, the comprehensive metabolism rate index obtained by calculation according to the monitored physiological parameters of the user when the user is in the rest state, MET _{Comprehensive intermediate} represents the comprehensive metabolism rate index of the user, namely, the comprehensive metabolism rate index obtained by calculation according to the monitored physiological parameters of the user when the user is in the middle active state, which comprises the rest state, the middle active state and the very active state, and the middle active state of the human body comprises the rest state and the very active state, and the middle active state corresponds to different action intensity coefficients, namely, the value range from the rest state to the very active state of the human body is 1 to 3, and then the middle active state takes the value is 2, namely, S _Action =2. And substituting the numerical values of the corresponding S actions in the comprehensive metabolic rate index calculation formula into the numerical values of the corresponding S actions in different human body active states.

Step S143, calculating the air outlet angle of the upper air duct and the air outlet angle of the lower air duct of the air conditioner according to the calculated comprehensive metabolic rate index of the user.

And step S144, controlling the upper and lower air outlets of the air conditioner according to the calculated upper air outlet angle and lower air outlet angle of the air conditioner.

And dynamically adjusting the air outlet angle of the upper air duct and the air outlet angle of the lower air duct of the upper and lower air-out type air conditioner according to the comprehensive metabolic rate index MET _{Comprehensive synthesis} calculated in real time. In a specific embodiment, according to the calculated comprehensive metabolic rate index of the user, the air outlet angle θ _{Upper air duct} of the upper air duct and the air outlet angle θ _{Lower air duct} of the lower air duct of the air conditioner are calculated by using the following formula:

Wherein, θ ₁ is the maximum pitch adjustment angle, can be based on ergonomic experiments and confirm, for example can set to 15, and 15 depression can cover 1.8m height head to waist, exceeds 15 and directly blows the face easily and causes the discomfort. Delta represents metabolic rate change sensitivity, and can be obtained by fitting experimental data, theta ₂ represents a direct blowing prevention protection angle, so that cold wind is prevented from blowing directly against the ankle, for example, -5 degrees, theta ₃ is an elevation angle for enabling the air flow to reach a preset distance, for example, when theta ₃ =10 degrees, the elevation angle of 10 degrees can enable the air flow to reach 2m out, for example, theta ₁ =15 degrees, delta=0.5, then

θ_{Upper air duct}＝15°·tanh(0.5·(MET_{Comprehensive synthesis 2}-MET_{Comprehensive standing}))+σ

The MET _{Comprehensive synthesis 2} represents the currently calculated comprehensive metabolic rate index of the user, that is, the currently calculated comprehensive metabolic rate index MET _{Comprehensive synthesis 2},MET_{Comprehensive standing} of the user according to the monitored physiological parameters of the user in the environment, which represents the total metabolic rate index of the user in a standing state, that is, the comprehensive metabolic rate index calculated by the monitored physiological parameters of the user when the state of the human body is identified as the standing state, MET _{Comprehensive intermediate} represents the comprehensive metabolic rate index of the user in an intermediate active state, that is, the comprehensive metabolic rate index calculated by the monitored physiological parameters of the user when the user is in the intermediate active state, and sigma is an angle adjustment coefficient, and the value range of sigma is-10 degrees to 10 degrees.

Step S145, calculating the up-down air outlet speed of the air conditioner according to the calculated comprehensive metabolic rate index of the user.

And step S146, controlling the up-down air outlet of the air conditioner according to the calculated up-down air outlet wind speed.

Specifically, when the comprehensive metabolic rate index of the user is smaller than or equal to a preset value, calculating the up-down air outlet wind speed of the air conditioner according to the following formula:

v=A₁+B₁MET_{Comprehensive synthesis}

Wherein A ₁ is the basic wind speed when the comprehensive metabolism rate index MET _{Comprehensive synthesis} is smaller than or equal to a preset value, and B1 is the increasing amplitude of the air supply wind speed per 1 unit increment of the comprehensive metabolism rate index MET _{Comprehensive synthesis}, and the unit is m/s. These values are summarized by experiments and analysis of a large amount of related data. For example, A ₁ is 0.3m/s and B is 0.2m/s

v=0.3+0.2MET_{Comprehensive synthesis}

v=A₂+B₂(MET_{Comprehensive synthesis}-C)

wherein A ₂ (e.g., 0.8) is a basic wind speed when the comprehensive metabolic rate index MET _{Comprehensive synthesis} is larger than a preset value C (e.g., 2.5), B ₂ (e.g., 0.5) is a magnitude of increase of 1 unit supply wind speed when the comprehensive metabolic rate index MET _{Comprehensive synthesis} is larger than the preset value C, and C is a preset value, namely a dividing line. These values are summarized by experiments and analysis of a large amount of related data. For example, A2 is 0.8, B2 is 0.5, C is 2.5, then

v=0.8+0.5(MET_{Comprehensive synthesis}-2.5)

At this time, MET _{Comprehensive synthesis} in the above two formulas is an index of the comprehensive metabolic rate of the human body obtained by monitoring each parameter and calculating when the value is taken according to S _Action.

The dynamic regulation and control of the air conditioner up and down air outlet can be realized based on the feedback of the multi-mode physiological data through the control flow.

In order to clearly illustrate the technical scheme of the present invention, the following describes the execution flow of the control method of the air conditioner provided by the present invention with some specific embodiments.

Fig. 6 is a flowchart of an embodiment of a control method of an air conditioner according to the present invention. As shown in fig. 6, first, the comprehensive metabolic rate index MET _{Comprehensive synthesis} of the user is calculated in real time, then, the cooperative control of the temperature and humidity of the air conditioner is driven by the comprehensive metabolic rate index MET _{Comprehensive synthesis} calculated in real time, and finally, the dynamic air supply adjustment is performed on the up-down air-out type air conditioner according to the comprehensive metabolic rate index MET _{Comprehensive synthesis} calculated in real time.

Fig. 7 is a schematic diagram of a calculation flow of an integrated metabolic rate index in the control method of an air conditioner according to the present invention. As shown in fig. 7, a millimeter wave radar, an infrared imager, a UWB positioning+rgb camera are set in the air conditioning system, the micro-circulation blood flow velocity Δv _{Blood flow} of the user body surface, the change amount Δt _{Skin of a person} of the skin surface temperature gradient of the user, the effective heat dissipation area a _{Body surface} of the human body, the action intensity coefficient S _Action, the heart rate variability index SDNN, RMSSD are monitored in real time, the metabolic rate MET _{radar device - thermal imaging} related to the blood flow and the skin temperature is calculated by using the monitored parameters, the metabolic rate MET _HRV related to the heart rate variability is calculated, and the comprehensive metabolic rate index MET _{Comprehensive synthesis} of the user is calculated according to the calculated metabolic rate MET _{radar device - thermal imaging} related to the blood flow and the skin temperature and the calculated metabolic rate MET _HRV related to the heart rate variability.

Fig. 8 is a schematic flow chart of coordinated control of temperature and humidity of an air conditioner in the control method of the air conditioner provided by the invention. As shown in fig. 8, the air conditioner is started in a cooling mode, the current air supply temperature of the air conditioner is monitored to be set as a reference air supply temperature T _Datum, the current set air supply temperature of the air conditioner is calculated according to the comprehensive metabolic rate index MET _{Comprehensive synthesis}, the lower limit of the dynamic thermal comfort temperature interval of the user is assumed to be Tmin, the upper limit is Tmax, the magnitudes of T _{Setting up} and Tmax are determined,

(1) When T _{Setting up} is smaller than or equal to Tmax, the air supply temperature of the air conditioner is proved to be lower than the upper limit of the temperature of the dynamic thermal comfort zone, and then the sizes of T _{Setting up} and Tmin can be further judged:

a. When T _{Setting up} is greater than or equal to Tmin, the air-conditioner air supply temperature is proved to be above the lower limit of the dynamic thermal comfort zone temperature at this time, namely, the air-conditioner air supply temperature is in the dynamic thermal comfort zone air supply temperature range at this time, and then the air-conditioner air supply temperature can be directly adjusted according to the temperature T _{Setting up} at this time:

b. When T _{Setting up} is not greater than or equal to Tmin, it is proved that the air-conditioning air supply temperature is less than the lower limit of the dynamic thermal comfort zone temperature at this time, and the user is uncomfortable due to the fact that the temperature is too low, and the air-conditioning air supply temperature is required to be the temperature of the lower limit of the dynamic thermal comfort zone, namely, T _{Setting up} =tmin, and then the air-conditioning air supply temperature at this time is adjusted to Tmin.

(2) When T _{Setting up} is not less than or equal to Tmax, it is proved that the air-conditioning air supply temperature exceeds the upper limit of the air supply temperature in the dynamic thermal comfort zone, and the air-conditioning air supply temperature is uncomfortable for the user due to the fact that the air-conditioning air supply temperature is too high, so that the air-conditioning air supply temperature is required to be the upper limit of the dynamic thermal comfort zone, namely, T _{Setting up} =tmax, and the air-conditioning air supply temperature is adjusted to Tmax.

After the air supply temperature of the air conditioner is adjusted according to the temperature T _{Setting up}, the current indoor air humidity is continuously monitored, the current indoor air humidity is set as RH _Datum, the air supply humidity of the air conditioner is calculated according to the comprehensive metabolic rate index MET _{Comprehensive synthesis}, the air supply humidity of the air conditioner is set as RH _{Target object}, the lower limit of a dynamic thermal comfort humidity interval of a user is set as RH _min, the upper limit is set as RH _max, the sizes of RH _{Target object} and RH _max are judged,

(1) When RH _{Target object} is less than or equal to RH _max, the humidity of the air-conditioning air supply is proved to be lower than the upper limit of the humidity of the dynamic thermal comfort region, so that the sizes of RH _{Target object} and RH _min can be further judged,

A. When RH _{Target object} is larger than or equal to RH _min, the humidity of the air-conditioning air supply is proved to be above the lower limit of the humidity of the dynamic thermal comfort zone at the moment, namely, the humidity of the air-conditioning air supply is in the range of the humidity of the dynamic thermal comfort zone at the moment, the humidity of the air-conditioning air supply can be directly adjusted according to the RH _{Target object} at the moment,

B. When RH _{Target object} is not more than RH _min, the humidity of the air-conditioning air supply is less than the lower limit of the humidity of the dynamic thermal comfort zone, and the air is dried due to the fact that the humidity is too low, so that users are uncomfortable, the humidity of the air-conditioning air supply is required to be the humidity of the lower limit of the dynamic thermal comfort zone, namely RH _{Target object}＝RH_min, and the humidity of the air-conditioning air supply is adjusted to be RH _min.

(2) When RH _{Target object} is not less than RH _max, it is proved that the humidity of the air-conditioning air supply exceeds the upper limit of the humidity of the air-conditioning air supply in the dynamic thermal comfort zone, and the user feels wet due to the fact that the humidity is too high, so that discomfort is obvious, the humidity of the air-conditioning air supply at the moment needs to be the humidity of the upper limit of the dynamic thermal comfort zone, namely RH _{Target object}＝RH_max, and the humidity of the air-conditioning air supply at the moment is adjusted to RH _max.

Fig. 9 is a schematic diagram of a dynamic up-down air outlet control flow in the control method of the air conditioner provided by the invention. As shown in fig. 9, the air conditioner is started up in a refrigeration mode, the air outlet volume of the upper air duct and the air outlet volume of the lower air duct of the upper and lower air-out type air conditioner are dynamically adjusted according to the comprehensive metabolic rate index MET _{Comprehensive synthesis} calculated in real time, the air outlet angle of the upper air duct and the air outlet angle of the lower air duct of the upper and lower air-out type air conditioner are dynamically adjusted according to the comprehensive metabolic rate index MET _{Comprehensive synthesis} calculated in real time, and finally the air outlet speed of the upper and lower air-out type air conditioner is dynamically adjusted according to the comprehensive metabolic rate index MET _{Comprehensive synthesis} calculated in real time.

Fig. 10 is a block diagram of an embodiment of a control device for an air conditioner according to the present invention. As shown in fig. 10, the control device 100 includes a monitoring unit 110, a calculating unit 120, and an adjusting unit 130 and/or a control unit 140.

The monitoring unit 110 is used for monitoring the physiological parameters of the user in the environment.

Specifically, the monitoring unit 110 monitors the physiological parameters of the user in the environment every preset time. The physiological parameters of the user comprise at least one of a user body surface microcirculation blood flow velocity (in acquisition time) variable DeltaV _{Blood flow}, a user skin surface temperature gradient variable DeltaT _{Skin of a person}, a human body effective heat dissipation area A _{Body surface}, an action intensity coefficient S _Action and heart rate variability indexes SDNN and RMSSD.

And the calculating unit 120 is used for calculating the comprehensive metabolic rate index of the user according to the physiological parameters of the user in the environment monitored by the monitoring unit.

In a specific embodiment, the calculating unit 120 calculates an integrated metabolic rate index of the user according to the physiological parameters of the user in the environment monitored by the monitoring unit 110, wherein the integrated metabolic rate index comprises calculating metabolic rates related to blood flow and skin temperature according to the change amount of the micro-circulation blood flow velocity of the body surface of the user, the change amount of the skin surface temperature gradient of the user, the effective heat dissipation area of the human body and the action intensity coefficient, calculating metabolic rates related to heart rate variability according to heart rate variability indexes SDNN and RMSSD, and calculating the integrated metabolic rate index of the user according to the calculated metabolic rates related to the blood flow and the skin temperature and the calculated metabolic rates related to the heart rate variability. The calculating unit 120 calculates the specific calculation process of the comprehensive metabolic rate index of the user according to the physiological parameter of the user in the environment monitored by the monitoring unit 110, and reference may be made to the corresponding step of calculating the comprehensive metabolic rate index of the user according to the physiological parameter of the user in the monitored environment in the step S120, which is not described herein.

And the adjusting unit 130 is configured to adjust the air supply temperature and/or the air supply humidity of the air conditioner according to the comprehensive metabolic rate index of the user calculated by the calculating unit.

In a specific embodiment, the adjusting unit 130 adjusts the air supply temperature of the air conditioner according to the comprehensive metabolic rate index of the user calculated by the calculating unit 120, including calculating the current set air supply temperature of the air conditioner according to the calculated comprehensive metabolic rate index of the user, and adjusting the air supply temperature of the air conditioner according to the calculated set air supply temperature and the upper limit temperature and the lower limit temperature of the preset air supply temperature interval.

The adjusting unit 130 calculates the current set air supply temperature of the air conditioner according to the calculated comprehensive metabolic rate index of the user, wherein the current set air supply temperature of the air conditioner includes obtaining the air supply temperature of the air conditioner when the air conditioner is started to operate in a refrigeration mode as a reference air supply temperature, and calculating the current set air supply temperature of the air conditioner according to the reference air supply temperature, the current calculated comprehensive metabolic rate index of the user and the last calculated comprehensive metabolic rate index of the user. Specifically, according to the reference air supply temperature, the currently calculated comprehensive metabolic rate index of the user and the last calculated comprehensive metabolic rate index of the user, the current set air supply temperature of the air conditioner is calculated by using the following formula:

The adjusting unit 130 adjusts the air supply temperature of the air conditioner according to the calculated set air supply temperature and the upper and lower limit temperatures of the preset air supply temperature interval, and specifically may include adjusting the air supply temperature of the air conditioner according to the set air supply temperature when the set air supply temperature is less than or equal to the upper limit temperature of the preset air supply temperature interval and is greater than or equal to the lower limit temperature of the preset air supply temperature interval, adjusting the air supply temperature of the air conditioner according to the upper limit temperature of the preset air supply temperature interval when the set air supply temperature is greater than the upper limit temperature of the preset air supply temperature interval, and adjusting the air supply temperature of the air conditioner according to the lower limit temperature of the preset air supply temperature interval when the set air supply temperature is less than the lower limit temperature of the preset air supply temperature interval.

The adjusting unit 130 may refer to the description of the steps S131 to S132 in the foregoing step S130 for adjusting the air supply temperature of the air conditioner according to the comprehensive metabolic rate index of the user calculated by the calculating unit 120, which is not described herein.

In a specific embodiment, the adjusting unit 130 adjusts the air supply humidity of the air conditioner according to the comprehensive metabolic rate index of the user calculated by the calculating unit 120, including calculating the current target air supply humidity of the air conditioner according to the calculated comprehensive metabolic rate index of the user, and adjusting the air supply humidity of the air conditioner according to the calculated target air supply humidity and the upper limit humidity and the lower limit humidity of the preset air supply humidity interval. The adjusting unit 130 calculates the current target air supply humidity of the air conditioner according to the calculated comprehensive metabolic rate index of the user, and specifically may include obtaining the relative humidity of air in the environment where the air supply temperature of the air conditioner is adjusted as a reference air supply humidity, and calculating the current target air supply humidity of the air conditioner according to the reference air supply humidity, the current calculated comprehensive metabolic rate index of the user, and the last calculated comprehensive metabolic rate index of the user. Specifically, the current target supply air humidity of the air conditioner may be calculated according to the reference supply air humidity, the current calculated comprehensive metabolism rate of the user, and the last calculated comprehensive metabolism rate of the user by using the following formula:

The adjusting unit 130 adjusts the air supply humidity of the air conditioner according to the calculated target air supply humidity and the upper limit humidity and the lower limit humidity of the preset air supply humidity interval, and specifically may include adjusting the air supply humidity of the air conditioner according to the target air supply humidity when the target air supply humidity is less than or equal to the upper limit humidity of the preset air supply humidity interval and is greater than or equal to the lower limit humidity of the preset air supply humidity interval, adjusting the air supply humidity of the air conditioner according to the upper limit humidity of the preset air supply humidity interval when the target air supply humidity is greater than the upper limit humidity of the preset air supply humidity interval, and adjusting the air supply humidity of the air conditioner according to the lower limit humidity of the preset air supply humidity interval when the target air supply humidity is less than the lower limit humidity of the preset air supply temperature interval.

The adjusting the air supply humidity of the air conditioner according to the comprehensive metabolic rate index of the user calculated by the calculating unit 120 may specifically refer to the description of step S133 to step S134 in the foregoing step S130, which is not described herein.

And a control unit 140, configured to control the up-down air outlet of the air conditioner according to the comprehensive metabolic rate index of the user calculated by the calculating unit 120.

Specifically, the air conditioner is an up-down air outlet air conditioner, and the up-down air outlet of the air conditioner can be controlled according to the calculated comprehensive metabolic rate index of the user. More specifically, the control unit 140 controls the air outlet volume of the upper air duct and the air outlet volume of the lower air duct of the air conditioner according to the comprehensive metabolic rate index of the user calculated by the calculating unit 120, and/or controls the air outlet angle of the upper air duct and the air outlet angle of the lower air duct of the air conditioner, and/or controls the air outlet speed of the upper air duct and the lower air duct of the air conditioner.

In a specific embodiment, the control unit 140 controls the up-down air outlet of the air conditioner according to the comprehensive metabolic rate index of the user calculated by the calculating unit 120, including calculating the up-air outlet air volume of the air conditioner and the down-air outlet air volume of the air conditioner according to the calculated comprehensive metabolic rate index of the user, and controlling the up-down air outlet of the air conditioner according to the calculated up-air outlet air volume of the air conditioner and the calculated down-air outlet air volume of the air conditioner.

Q_{Lower air duct}＝Q_{Total air volume}-Q_{Upper air duct}

In a specific embodiment, the control unit 140 controls the up-down air outlet of the air conditioner according to the comprehensive metabolic rate index of the user calculated by the calculating unit 120, including calculating an up-air outlet angle and a down-air outlet angle of the air conditioner according to the calculated comprehensive metabolic rate index of the user, and controlling the up-down air outlet of the air conditioner according to the calculated up-air outlet angle and the calculated down-air outlet angle.

In a specific embodiment, the control unit 140 controls the up-down air outlet of the air conditioner according to the comprehensive metabolic rate index of the user calculated by the calculating unit 120, including calculating the up-down air outlet wind speed of the air conditioner according to the calculated comprehensive metabolic rate index of the user, and controlling the up-down air outlet of the air conditioner according to the calculated up-down air outlet wind speed.

v=A₁+B₁MET_{Comprehensive synthesis}

v=0.3+0.2MET_{Comprehensive synthesis}

v=A₂+B₂(MET_{Comprehensive synthesis}-C)

Wherein A ₂ (e.g., 0.8) is a base wind speed when the comprehensive metabolic rate index MET _{Comprehensive synthesis} is larger than a preset value C (e.g., 2.5), B ₂ (e.g., 0.5) is a magnitude of increase of 1 unit supply wind speed per increase of the comprehensive metabolic rate index MET _{Comprehensive synthesis}, and C is a preset value, namely a dividing line. These values are summarized by experiments and analysis of a large amount of related data. For example, A2 is 0.8, B2 is 0.5, C is 2.5, then

v=0.8+0.5(MET_{Comprehensive synthesis}-2.5)

The present invention also provides a storage medium corresponding to the control method of an air conditioner, on which a computer program is stored, which when executed by a processor, implements the steps of any of the methods described above.

The invention also provides an air conditioner corresponding to the control method of the air conditioner, which comprises a processor, a memory and a computer program stored on the memory and capable of running on the processor, wherein the processor executes the computer program to realize the steps of any one of the methods.

The invention also provides an air conditioner corresponding to the control device of the air conditioner, which comprises the control device of any one of the air conditioners.

The invention also provides a computer program product corresponding to the control method of the air conditioner, comprising a computer program which, when executed by a processor, implements the steps of any of the methods described above.

According to the scheme provided by the invention, according to the technical scheme provided by the invention, a model for associating human physiological parameters (such as skin temperature, heart rate and blood flow) with human metabolic rate is established, comprehensive metabolic rate indexes are calculated in real time, temperature and humidity cooperative control is carried out, and the wind quantity, wind speed and wind direction of the upper and lower air outlet type air conditioner are dynamically adjusted according to the comprehensive metabolic rate indexes calculated in real time, so that a personalized and accurate solution can be provided for dynamic thermal comfort air conditioner control.

The scheme provided by the invention establishes a dynamic thermal comfort feedback mechanism of multi-mode physiological data fusion, and cooperates with the up-down air outlet type air conditioner to dynamically predict air supply, thereby providing a solution for accurate and personalized thermal environment regulation and control for an intelligent air conditioning system.

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

In the several embodiments provided in the present application, it should be understood that the disclosed technology may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units, for example, may be a logic function division, and may be implemented in another manner, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.

The units described as separate components may or may not be physically separate, and components as control devices may or may not be physical units, may be located in one place, or may be distributed over a plurality of units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in essence or a part contributing to the related art or all or part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. The storage medium includes a U disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, etc. which can store the program code.

The above description is only an example of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A method for controlling an air conditioner, comprising:

Monitoring human physiological parameters of users in the environment;

Calculating a comprehensive metabolic rate index of the user based on the monitored physiological parameters of the user in the environment;

adjusting the air supply temperature and/or air supply humidity of the air conditioner according to the calculated comprehensive metabolic rate index of the user;

and/or,

The up and down air outlets of the air conditioner are controlled according to the calculated comprehensive metabolic rate index of the user.

2. The method according to claim 1, wherein the user's physiological parameters include: a change in microcirculatory blood flow velocity on the user's body surface, a change in the user's skin surface temperature gradient, an effective heat dissipation area of the human body, an exercise intensity coefficient, and at least one of heart rate variability indicators SDNN and RMSSD;

Calculate the user's comprehensive metabolic rate index based on the monitored physiological parameters of the user in the environment, including:

The metabolic rate associated with blood flow and skin temperature is calculated based on the change in microcirculatory blood flow velocity on the user's body surface, the change in the temperature gradient on the user's skin surface, the effective heat dissipation area of the human body, and the movement intensity coefficient;

The metabolic rate associated with heart rate variability was calculated based on the heart rate variability indicators SDNN and RMSSD;

A comprehensive metabolic rate index of the user is calculated based on the calculated metabolic rate associated with blood flow and skin temperature and the calculated metabolic rate associated with heart rate variability.

3. The method according to claim 1, characterized in that the metabolic rate associated with blood flow and skin temperature is calculated based on the change in microcirculatory blood flow velocity of the user's body surface, the change in the temperature gradient of the user's skin surface, the effective heat dissipation area of the human body, and the movement intensity coefficient, comprising:

Based on the change in microcirculatory blood flow velocity on the user's body surface, the change in the user's skin surface temperature gradient, the human body's effective heat dissipation area, and the movement intensity coefficient, the metabolic rate MET _{radar-thermal imaging} associated with blood flow and skin temperature is calculated using the following formula:

Among them, _ΔVbloodflow is the change in microcirculatory blood flow velocity on the body surface, Δt is the time interval for collecting blood flow velocity changes, _ΔTskin is the change in skin surface temperature gradient, _Abodysurface is the effective heat dissipation area of the human body, _Saction is the action intensity coefficient, and k1, k2, and k3 are weight coefficients;

and/or,

The metabolic rate associated with heart rate variability is calculated based on the heart rate variability indicators SDNN and RMSSD, including:

The metabolic rate MET _HRV associated with heart rate variability is calculated using the following formula based on the heart rate variability indicators SDNN and RMSSD:

Among them, SDNN is the standard deviation of RR interval, RMSSD is the root mean square of the difference between adjacent RR intervals, γ and δ are weight coefficients;

and/or,

Calculating a comprehensive metabolic rate index of the user based on the calculated metabolic rate associated with blood flow and skin temperature and the calculated metabolic rate associated with heart rate variability, including:

Based on the metabolic rate MET _{radar-thermal imaging} associated with blood flow and skin temperature and the metabolic rate MET _HRV associated with heart rate variability, the user's comprehensive metabolic rate index MET _{Comprehensive} is calculated using the following formula:

MET _combination = α·MET _{radar-thermal imaging} + β·MET _HRV + ε·S _motion

Among them, α, β and ε are weight coefficients.

4. The method according to claim 1, wherein

Adjusting the air supply temperature of the air conditioner according to the calculated comprehensive metabolic rate index of the user includes:

Calculating the current set air supply temperature of the air conditioner based on the calculated comprehensive metabolic rate index of the user;

Adjusting the air supply temperature of the air conditioner according to the calculated set air supply temperature and the upper limit temperature and the lower limit temperature of the preset air supply temperature range;

and/or,

Adjusting the air supply humidity of the air conditioner according to the calculated comprehensive metabolic rate index of the user includes:

Calculating the current target air supply humidity of the air conditioner according to the calculated comprehensive metabolic rate index of the user;

The supply air humidity of the air conditioner is adjusted according to the calculated target supply air humidity and the upper limit humidity and the lower limit humidity of the preset supply air humidity range.

5. The method according to claim 4, characterized in that

Calculating the current set air supply temperature of the air conditioner according to the calculated comprehensive metabolic rate index of the user, including:

Obtaining the supply air temperature when the air conditioner is turned on and operated in cooling mode as a reference supply air temperature;

Calculating a current set air supply temperature of the air conditioner according to the reference air supply temperature, the currently calculated comprehensive metabolic rate index of the user, and the last calculated comprehensive metabolic rate index of the user;

and/or,

Adjusting the supply air temperature of the air conditioner according to the calculated set supply air temperature and the upper limit temperature and the lower limit temperature of the preset supply air temperature range includes:

When the set air supply temperature is less than or equal to the upper limit temperature of the preset air supply temperature range and greater than or equal to the lower limit temperature of the preset air supply temperature range, adjusting the air supply temperature of the air conditioner according to the set air supply temperature;

When the set air supply temperature is greater than the upper limit temperature of the preset air supply temperature range, adjusting the air supply temperature of the air conditioner according to the upper limit temperature of the preset air supply temperature range;

When the set air supply temperature is lower than the lower limit temperature of the preset air supply temperature range, the air supply temperature of the air conditioner is adjusted according to the lower limit temperature of the preset air supply temperature range.

6. The method according to claim 5, wherein the step of calculating the current set air supply temperature of the air conditioner based on the reference air supply temperature, the currently calculated comprehensive metabolic rate index of the user, and the last calculated comprehensive metabolic rate index of the user comprises:

The current set air supply temperature of the air conditioner is calculated according to the reference air supply temperature, the currently calculated comprehensive metabolic rate index of the user, and the last calculated comprehensive metabolic rate index of the user using the following formula:

T _setting = T _reference - a (MET _{total 2} - MET _{total 1} )

Among them, T _setting represents the current set air supply temperature, T _base represents the base air supply temperature, a is the temperature adjustment coefficient, MET _{comprehensive 1} represents the comprehensive metabolic rate index of the user calculated last time, and MET _{comprehensive 2} represents the comprehensive metabolic rate index of the user calculated currently.

7. The method according to claim 4, characterized in that

Calculating the current target air supply humidity of the air conditioner based on the calculated comprehensive metabolic rate index of the user includes:

Obtaining the relative humidity of the air in the environment after adjusting the air supply temperature of the air conditioner as a reference air supply humidity;

Calculating a current target air supply humidity of the air conditioner according to the reference air supply humidity, the currently calculated comprehensive metabolic rate index of the user, and the last calculated comprehensive metabolic rate index of the user;

and/or,

Adjusting the supply air humidity of the air conditioner according to the calculated target supply air humidity and the upper and lower humidity limits of a preset supply air humidity range includes:

When the target supply air humidity is less than or equal to the upper limit humidity of the preset supply air humidity range and greater than or equal to the lower limit humidity of the preset supply air humidity range, adjusting the supply air humidity of the air conditioner according to the target supply air humidity;

When the target supply air humidity is greater than the upper limit humidity of the preset supply air humidity range, adjusting the supply air humidity of the air conditioner according to the upper limit humidity of the preset supply air humidity range;

When the target supply air humidity is lower than the preset lower limit humidity of the supply air temperature and humidity, the supply air humidity of the air conditioner is adjusted according to the lower limit humidity of the preset supply air humidity range.

8. The method according to claim 7, wherein calculating the current target air supply humidity of the air conditioner based on the reference air supply humidity, the currently calculated comprehensive metabolic rate index of the user, and the last calculated comprehensive metabolic rate index of the user comprises:

The current target air supply humidity of the air conditioner is calculated using the following formula based on the reference air supply humidity, the currently calculated comprehensive metabolic rate of the user, and the last calculated comprehensive metabolic rate of the user:

RH _target = RH _benchmark - b (MET _{composite 2} - MET _{composite 1} )

Among them, RH _target represents the current target air supply humidity, RH _base represents the base air supply humidity, b is the humidity adjustment coefficient, MET _{comprehensive 1} represents the comprehensive metabolic rate index of the user calculated last time, and MET _{comprehensive 2} represents the comprehensive metabolic rate index of the user calculated currently.

9. The method according to claim 1, wherein controlling the upper and lower airflow of the air conditioner according to the calculated comprehensive metabolic rate index of the user comprises:

Calculating the air volume of the upper duct and the air volume of the lower duct of the air conditioner according to the calculated comprehensive metabolic rate index of the user;

Controlling the upper and lower air outlets of the air conditioner according to the calculated upper and lower air outlet volumes;

and/or,

Calculating an upwind outlet angle and a downwind outlet angle of the air conditioner according to the calculated comprehensive metabolic rate index of the user;

Controlling the upper and lower air outlets of the air conditioner according to the calculated upper and lower air outlet angles;

and/or,

Calculating the upper and lower air outlet speeds of the air conditioner according to the calculated comprehensive metabolic rate index of the user;

The up and down air outlets of the air conditioner are controlled according to the calculated up and down air outlet wind speeds.

10. The method according to claim 9, characterized in that

Calculating the air volume of the upper duct and the air volume of the lower duct of the air conditioner according to the calculated comprehensive metabolic rate index of the user, including:

According to the calculated comprehensive metabolic rate index of the user, the air volume of the upper duct and the air volume of the lower duct of the air conditioner are calculated using the following air volume distribution formula:

Q _{downwind duct} = Q _{total air volume} - Q _{upwind duct}

Wherein, Qtotal _{air volume} represents the total air volume, _Qupwind represents the air volume of the upwind duct, _Qdownwind represents the air volume of the downwind duct, MET _{comprehensive 2} represents the currently calculated comprehensive metabolic rate index of the user, MET _{comprehensive resting} represents the comprehensive metabolic rate index of the user when in a resting state, and MET _{comprehensive intermediate} represents the comprehensive metabolic rate index of the user when in an intermediate active state;

and/or,

Calculating the upwind duct air outlet angle and the downwind duct air outlet angle of the air conditioner according to the calculated comprehensive metabolic rate index of the user includes:

According to the calculated comprehensive metabolic rate index of the user, the air outlet angle of the upper duct and the air outlet angle of the lower duct of the air conditioner are calculated using the following formula:

Wherein, _θupwind represents the angle of the upwind outlet, _θdownwind represents the angle of the downwind outlet, _θ1 is the maximum pitch adjustment angle, δ represents the sensitivity to metabolic rate changes, _θ2 represents the anti-direct blow protection angle, _θ3 is the elevation angle at which the airflow reaches the preset distance, MET _{Comprehensive 2} represents the currently calculated comprehensive metabolic rate index of the user, MET _{Comprehensive Standing} represents the total metabolic rate index of the user when in a standing state, MET _{Comprehensive Intermediate} represents the comprehensive metabolic rate index of the user when in an intermediate active state, and σ is the angle adjustment coefficient;

and/or,

Calculating the upper and lower air outlet speeds of the air conditioner based on the calculated comprehensive metabolic rate index of the user includes:

When the user's comprehensive metabolic rate index is less than or equal to a preset value, the upper and lower air outlet speeds of the air conditioner are calculated according to the following formula:

v＝A ₁ +B ₁ MET _{comprehensive}

Among them, _A1 is the basic wind speed when the comprehensive metabolic rate index MET is less _{than or} equal to the preset value; _B1 represents the increase in the supply air speed for each unit increase in the _{comprehensive} metabolic rate index MET;

When the user's comprehensive metabolic rate index is greater than a preset value, the upper and lower air flow speeds of the air conditioner are calculated according to the following formula:

v＝A ₂ +B ₂ (MET _{comprehensive} -C)

Among them, _A2 is the basic wind speed when the comprehensive metabolic rate index MET _{is greater} than the preset value C, _B2 represents the increase in the supply air speed for every unit increase in the _{comprehensive} metabolic rate index MET, and C is the preset value.

11. A control device for an air conditioner, comprising:

A monitoring unit, used to monitor the physiological parameters of the user in the environment;

a calculation unit, configured to calculate a comprehensive metabolic rate index of the user based on the physiological parameters of the user in the environment monitored by the monitoring unit;

an adjusting unit, configured to adjust the air supply temperature and/or air supply humidity of the air conditioner according to the comprehensive metabolic rate index of the user calculated by the calculating unit;

and/or,

The control unit is used to control the upper and lower air outlets of the air conditioner according to the comprehensive metabolic rate index of the user calculated by the calculation unit.

12. A storage medium, characterized in that a computer program is stored thereon, and when the program is executed by a processor, the steps of the method according to any one of claims 1 to 10 are implemented.

13. An air conditioner, characterized in that it comprises a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps of the method according to any one of claims 1 to 10 are implemented, or the air conditioner comprises the control device according to claim 11.

14. A computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 10 are implemented.