CN106705387B

CN106705387B - Air conditioner control method and device and air conditioner

Info

Publication number: CN106705387B
Application number: CN201710115383.0A
Authority: CN
Inventors: 屈金祥; 赖想球; 张天宇; 段晓华; 胡渊翔; 邹丁山
Original assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd
Current assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2017-02-28
Filing date: 2017-02-28
Publication date: 2020-06-05
Anticipated expiration: 2037-02-28
Also published as: CN106705387A

Abstract

The invention discloses an air conditioner control method, which comprises the following steps: acquiring the return air temperature of the air conditioner in a sleep state, the thermal resistance information of a bedding system in the environment where the air conditioner is located and the coverage change rate; calculating the cold and hot feeling state according to the thermal resistance information, the coverage change rate and the return air temperature of the air conditioner; and controlling the air conditioner to operate according to the cold and hot feeling state. The invention also discloses an air conditioner control device and an air conditioner. The invention accurately provides the cold and hot feeling state of the user, thereby improving the accuracy of the air conditioner control and improving the comfort level of the air conditioner.

Description

Air conditioner control method and device and air conditioner

Technical Field

The invention relates to the technical field of air conditioners, in particular to an air conditioner control method and device and an air conditioner.

Background

Generally, the air conditioner performs cooling or heating operation by adjusting parameter values such as temperature or wind speed preset by a user, and the preset parameters are set according to the past habits of the user and are not really suitable for different user states. For example, some users set a relatively low temperature such as 20 ℃ in a relatively hot environment, and after a certain period of time, the temperature of the room rapidly decreases, and the user feels relatively cold, and then the set temperature of the air conditioner is raised, which causes discomfort to the user. And when the user is in different positions in the room, the cooling or heating effect of the air conditioner felt by the user is different due to different positions of the air outlet which is far away from the air conditioner, so that the cold or hot feeling of the user is different. Therefore, if the air conditioners are operated or adjusted according to a fixed parameter, a feeling of supercooling or overheating may be given to the user, causing discomfort to the user. This may reduce the user experience of the air conditioner. Therefore, in the control process of the air conditioner at present, an accurate user cold and hot state cannot be provided, and the air conditioner is controlled to operate according to the accurate cold and hot state.

The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.

Disclosure of Invention

The invention mainly aims to provide an air conditioner control method, an air conditioner control device and an air conditioner, and aims to solve the problems that an accurate user cold and hot state cannot be provided in the existing air conditioner control process, and the air conditioner is controlled to operate according to the accurate cold and hot state.

In order to achieve the above object, the present invention provides an air conditioner control method, comprising the steps of:

acquiring the return air temperature of the air conditioner in a sleep state, the thermal resistance information of a bedding system in the environment where the air conditioner is located and the coverage change rate;

calculating the cold and hot feeling state according to the thermal resistance information, the coverage change rate and the return air temperature of the air conditioner;

and controlling the air conditioner to operate according to the cold and hot feeling state.

Preferably, the step of obtaining the coverage of the bedding system in the sleeping state comprises:

obtaining the area of a heat source in a preset number of cycles;

calculating an initial coverage area according to a preset algorithm according to the detected heat source area;

and calculating the coverage change rate of the bedding system according to the area of the heat source scanned in each infrared period and the initial coverage area.

Preferably, the calculating the cold and hot feeling state according to the thermal resistance information, the coverage change rate and the return air temperature of the air conditioner comprises:

determining the wind level of an indoor fan of an air conditioner and determining the area where the user is located;

determining the temperature of cold and heat feeling according to the wind shield, the area and the return air temperature of the air conditioner;

and calculating the cold and heat feeling state according to the thermal resistance information, the coverage change rate and the cold and heat feeling temperature.

Preferably, after the step of calculating the thermal sensation state according to the thermal resistance information, the coverage change rate, and the thermal sensation temperature, the method further includes:

when the operation mode of the air conditioner is a refrigeration mode, if the return air temperature of the air conditioner is lower than a first preset temperature, the thermal resistance information is a first thermal resistance value correspondingly;

if the return air temperature of the air conditioner is higher than a second preset temperature, the thermal resistance information corresponds to a second thermal resistance value;

if the return air temperature of the air conditioner is higher than a first preset temperature and lower than a second preset temperature, calculating a third thermal resistance value corresponding to the thermal resistance information according to the first thermal resistance value and a corrected value of the return air temperature of the air conditioner to the thermal resistance, wherein the first preset temperature is lower than the second preset temperature;

after obtaining the thermal resistance information, obtaining a correction coefficient of the coverage change rate of the bedding system to the thermal resistance in the refrigeration mode, and correcting the thermal resistance information according to the correction coefficient in the refrigeration mode; and calculating the cold and hot feeling state according to the corrected thermal resistance information and the return air temperature of the air conditioner.

when the operation mode of the air conditioner is a heating mode, if the return air temperature of the air conditioner is lower than a third preset temperature, the thermal resistance information is a fourth thermal resistance value correspondingly;

if the return air temperature of the air conditioner is higher than a fourth preset temperature, the thermal resistance information corresponds to a fifth thermal resistance value;

if the return air temperature of the air conditioner is higher than a third preset temperature and lower than a fourth preset temperature, calculating a sixth thermal resistance value corresponding to the thermal resistance information according to a second thermal resistance value and a corrected value of the return air temperature of the air conditioner to the thermal resistance, wherein the third preset temperature is lower than the fourth preset temperature, the first preset temperature is higher than the third preset temperature, the first preset temperature is lower than the fourth preset temperature, and the fourth preset temperature is lower than the second preset temperature;

after obtaining the thermal resistance information, obtaining a correction coefficient of the coverage change rate of the bedding system to the thermal resistance in the heating mode, and correcting the thermal resistance information according to the correction coefficient in the heating mode; and calculating the cold and hot feeling state according to the corrected thermal resistance information and the return air temperature of the air conditioner.

In addition, to achieve the above object, the present invention also provides an air conditioner control device including:

the acquisition module is used for acquiring the return air temperature of the air conditioner in a sleep state, and the thermal resistance information and the coverage change rate of a bedding system in the environment where the air conditioner is located;

the calculating module is used for calculating the cold and hot feeling state according to the thermal resistance information, the coverage rate and the return air temperature of the air conditioner;

and the control module is used for controlling the air conditioner to operate according to the cold and heat feeling state.

Preferably, the obtaining module includes:

the acquisition unit is used for acquiring the area of the heat source in a preset number of cycles;

the calculating unit is used for calculating the initial coverage area according to the detected heat source area and a preset algorithm; the computing unit is also used for

Preferably, the computing module is further configured to determine a wind level of an indoor fan of an air conditioner and determine an area where the user is located; determining the temperature of cold and heat feeling according to the wind shield, the area and the return air temperature of the air conditioner; and calculating the cold and heat feeling state according to the thermal resistance information, the coverage change rate and the cold and heat feeling temperature.

Preferably, the obtaining module further comprises a correcting unit,

the obtaining unit is further configured to, when the operation mode of the air conditioner is a refrigeration mode, if the return air temperature of the air conditioner is lower than a first preset temperature, obtain the thermal resistance information as a first thermal resistance value; and also used for

If the return air temperature of the air conditioner is higher than a second preset temperature, the thermal resistance information corresponds to a second thermal resistance value; and also used for

The calculating unit is further used for calculating a third thermal resistance value corresponding to the thermal resistance information according to the first thermal resistance value and a corrected value of the air return temperature of the air conditioner to the thermal resistance if the air return temperature of the air conditioner is higher than a first preset temperature and lower than a second preset temperature, wherein the first preset temperature is lower than the second preset temperature;

the acquisition unit is also used for acquiring a correction coefficient of the bedding system coverage change rate to the thermal resistance in the refrigeration mode after the thermal resistance information is obtained;

the correction unit is used for correcting the thermal resistance information according to a correction coefficient in a refrigeration mode;

and the calculating module is also used for calculating the cold and hot feeling state according to the corrected thermal resistance information and the return air temperature of the air conditioner.

Preferably, the obtaining unit is further configured to, when the operation mode of the air conditioner is a heating mode, if the return air temperature of the air conditioner is lower than a third preset temperature, determine that the thermal resistance information corresponds to a fourth thermal resistance value; and also used for

If the return air temperature of the air conditioner is higher than a fourth preset temperature, the thermal resistance information corresponds to a fifth thermal resistance value; and also used for

The calculation unit is further configured to calculate a sixth thermal resistance value corresponding to the thermal resistance information according to a second thermal resistance value and a corrected value of the return air temperature of the air conditioner to the thermal resistance if the return air temperature of the air conditioner is greater than a third preset temperature and less than a fourth preset temperature, where the third preset temperature is less than the fourth preset temperature, the first preset temperature is greater than the third preset temperature, the first preset temperature is less than the fourth preset temperature, and the fourth preset temperature is less than the second preset temperature;

the acquisition unit is also used for acquiring a correction coefficient of the coverage change rate of the bedding system to the thermal resistance in the heating mode after the thermal resistance information is obtained;

the correction unit is also used for correcting the thermal resistance information according to a correction coefficient in a heating mode;

In addition, in order to achieve the above object, the present invention further provides an air conditioner including the air conditioner control device as described above.

The invention calculates the cold and hot feeling state through the thermal resistance information, the coverage change rate and the return air temperature of the air conditioner of the bedding system in the sleeping state, and further controls the air conditioner to operate according to the cold and hot feeling state. The problem that the control accuracy of the air conditioner is poor due to the fact that the accurate user cold and hot states cannot be provided in the control process of the existing air conditioner is effectively solved. The invention accurately provides the cold and hot feeling state of the user, thereby improving the accuracy of the air conditioner control and improving the comfort level of the air conditioner.

Drawings

FIG. 1 is a flow chart illustrating an embodiment of a method for controlling an air conditioner according to the present invention;

FIG. 2 is a schematic flow chart illustrating a method for calculating a thermal state according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of an infrared array sensor for detecting the position of a human body in the up-down direction according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of an infrared array sensor for detecting the position of a human body in the left-right direction according to an embodiment of the present invention;

FIG. 5 is a plot of a distribution of regions of a human body location in a room in accordance with an embodiment of the present invention;

FIG. 6 is a schematic view of a flow chart of the calculation of the rate of change of coverage of the bedding system according to an embodiment of the present invention;

FIG. 7 is a schematic flow chart illustrating calculation of thermal resistance information according to an embodiment of the present invention;

FIG. 8 is a schematic flow chart illustrating calculation of thermal resistance information according to another embodiment of the present invention;

FIG. 9 is a functional block diagram of an embodiment of an air conditioner control device according to the present invention;

FIG. 10 is a block diagram illustrating a refinement function of one embodiment of the acquisition module of FIG. 9;

fig. 11 is a schematic diagram of a refinement function module of another embodiment of the obtaining module in fig. 9.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In view of the above problems, the present invention provides a method for controlling an air conditioner.

In an embodiment, referring to fig. 1, the air conditioner control method includes:

step S10, obtaining the return air temperature of the air conditioner in the sleep state, the thermal resistance information of the bedding system in the room where the user is located and the coverage change rate;

in this embodiment, the return air temperature of the air conditioner in the sleep state is acquired, and the return air temperature is detected by the temperature sensor. When a user in a room acted by an air conditioner is in a sleep state, acquiring thermal resistance information (setting a thermal resistance reference value which is correspondingly different in different seasons, such as Rt in summer, RT in winter, and the like, or setting different thermal resistance reference values according to different air conditioner operation modes) and a coverage change rate (change rate in different detection periods of a quilt and can be detected by infrared scanning of the area of a heat source) of a bedding system in the room in the sleep state by infrared equipment, wherein the sleep state can be the state that the user falls asleep, namely the light intensity in the room is detected after the user falls asleep for 30min or 40min, the light intensity value is smaller than a preset light intensity value (the state that the room is darker, is not lighted, has no equipment with other brightness, or the value set according to the user requirement), and the time that each user enters the sleep state within a period of time (5 days or 7 days and the like) recently, judging whether the user enters the sleep according to the recorded time and the time required by the user to enter the sleep, or acquiring the current physical state information of the user, and calculating the time for the user to enter the sleep according to the physical state information and the age of the user, for example, the time for the user to enter the sleep is slower in the cold state; when exercising or in a more exhausted state, it is quicker to get to sleep, etc. The bedding system is bedding articles covered on a user body by a quilt and the like, and the thermal resistance information of the bedding system is related to the thickness of the covered articles, and the thicker the thermal resistance is, the thinner the thermal resistance is.

Step S20, calculating the cold and hot feeling state according to the thermal resistance information, the coverage change rate and the return air temperature of the air conditioner;

after thermal resistance information, a coverage change rate and the return air temperature of the air conditioner of a bedding system in a room in a sleep state are obtained, the cold and hot feeling state is calculated according to the thermal resistance information, the coverage change rate and the return air temperature of the air conditioner, the coverage change rate contributes to the thermal resistance information, the coverage is large, the coverage is small, the thermal resistance is small, and the thermal resistance information is updated through the coverage rate of the bedding system, so that the thermal resistance information is more accurate. Specifically, referring to fig. 2, the calculating the cold and hot feeling state according to the thermal resistance information, the coverage change rate and the return air temperature of the air conditioner includes:

step S21, determining the wind level of the indoor fan of the air conditioner and the area where the user is located;

step S22, determining the temperature of cold and heat feeling according to the wind shield, the area and the return air temperature of the air conditioner;

and step S23, calculating the cold and heat feeling state according to the thermal resistance information, the coverage change rate and the cold and heat feeling temperature.

FIG. 3 is a schematic diagram showing an array infrared sensor module measuring the position parameters of a human body in the up-down direction, where 1 is an air conditioner, 2 is an array infrared sensor module installed on the air conditioner, 3 is the position of the human body, 4 is the wall around the room, and 5 is the ground, the array infrared sensor module can detect the size of the included angle between the connection line with the position of the human body in the up-down direction and the wall surface fixed by the air conditioner installed with the array infrared sensor module, i.e. the included angle theta between the connection line L between the array infrared sensor module and the position of the human body and the line H vertically parallel to the wall surface of the fixed air conditioner, and because the installation height of the air conditioner is a fixed value, i.e. H in the figure is a fixed value, and the value can be obtained by measuring the height of the air conditioner after the installation by a user and inputting the measured value into the control interface of the air conditioner, the size of W can be calculated by the trigonometric function formula according to the values of H and the included angle θ: and W is H tan theta, namely the shortest distance W value of the position of the human body relative to the air conditioner in the ground direction is obtained.

Fig. 4 is a schematic diagram showing an array type infrared sensor module measuring position parameters of a human body in left and right directions thereof, in which fig. 1 is an air conditioner, fig. 2 is an array type infrared sensor module installed on the air conditioner, fig. 3 is a human body, fig. 4 is a wall body around a room, a1 and a2 are different position points where the human body is located, a maximum viewing angle at which the array type infrared sensor module can scan and detect a range of a surrounding environment and an object in the left and right directions is fixed, an included angle b3 formed by lines L1 and L4 in the figure is a maximum viewing angle at which the array type infrared sensor module can detect the surrounding environment and the object in the left and right directions, when the human body is located at different positions in the room, such as points a1 and a2 in the figure, a position thereof in the left and right directions of the maximum viewing angle range can be detected by the array type infrared sensor module, and since L1 and L4 are fixed, an included angle between the connection line determined by the human body and the array type, if the human body is located at the position of the a1 point, the size of the included angle b1 between the connecting line L2 and the L1 determined by the human body and the array-type infrared sensor module can be detected, and similarly, the size of the included angle b2 between the connecting line L3 and the L1 determined by the human body and the array-type infrared sensor module can be detected when the human body is located at the position of the a2 point. The position of the human body in the left and right directions of the array type infrared sensor module can be determined through the included angles b1 and b2, and certainly, the included angles are not necessarily fixed to the angle formed by the connecting line determined by the human body and the array type infrared sensor module and the left sideline L1 with the maximum visual angle, and can also be the angle formed by the connecting line determined by the human body and the array type infrared sensor module and the right connecting line L2.

The position of the human body in a room can be determined by measuring the position parameters of the human body in the up-down direction and the position parameters of the human body in the left-right direction of the array type infrared sensor module, and the specific position of the human body in the room can be calculated due to the fact that the scanning distance and the scanning included angle are fixed. After the position of the human body in the room is determined, the operation wind speed value of the position of the human body is determined according to the position of the human body in the room and the operation wind speed of the air conditioner. According to experiments, when the position of a human body is closer to the position opposite to the air conditioner, the difference between the operating wind speed of the position of the human body and the operating wind speed of the air conditioner is smaller; when the position of the human body is farther away from the position opposite to the air conditioner, the difference between the operating wind speed of the position of the human body and the operating wind speed of the air conditioner is larger.

Specifically, determining the operating wind speed value of the position of the human body may include the following steps:

dividing a blowing area of an air conditioner into a plurality of sub-areas in advance;

as shown in fig. 5, the area in the room may be divided into a to E5 sub-areas, where the area C is an area relatively close to the facing position of the air conditioner.

Acquiring the running wind speed of an air conditioner;

the operating wind speed value of the air conditioner may be divided into several levels, i.e., wind speed level V2 values, each wind speed level V2 having a corresponding operating wind speed value. The grade may be the running damper of the air conditioner, such as high, medium, low, etc. According to the running wind shield of the air conditioner, the running wind speed value of the air conditioner can be obtained.

Acquiring a subregion to which the position of the human body belongs;

the sub-region in which the human body is located, namely the sub-region to which the position of the human body belongs, can be obtained through the position parameters measured by the infrared array sensor module and the pre-divided sub-regions. For example, if a human body is located at a position facing the air conditioner, the human body is located in the C area.

And determining the operation wind speed value of the position of the human body according to the operation wind speed of the air conditioner and the sub-area to which the position of the human body belongs.

In this embodiment, according to the relationship between the operating wind speed of the position where the human body is located and the operating rotation speed of the air conditioner, the operating wind speed value V1 when the human body is located in different areas can be determined, for example:

according to experiments, when the position of a human body is closer to the position opposite to the air conditioner, the difference between the operating wind speed of the position of the human body and the operating wind speed of the air conditioner is smaller; when the position of the human body is farther away from the position opposite to the air conditioner, the difference between the operating wind speed of the position of the human body and the operating wind speed of the air conditioner is larger. As can be seen from the above table: the area C is the area closest to the opposite position of the air conditioner, the obtained running wind speed value is the largest when the human body is positioned in the area C, the area A, B, D, E is far away from the area C close to the opposite position of the air conditioner, and the obtained running wind speed value is relatively reduced when the human body is positioned in the two areas. Different wind grades can influence the temperature of cold and heat feeling. In the table, reference is made to table 1 below, which is a mapping table of the air damper and the area where the person is located and the thermal sensation temperature in the cooling mode, T1 in the table is the return air temperature of the air conditioner, T1a, T3a and T4a are the thermal sensation temperatures of the human body in different areas, table 2 is a mapping table of the air damper and the area where the person is located and the thermal sensation temperature in the heating mode, 1 corresponds to a, 2 corresponds to B, 3 corresponds to C, 4 corresponds to D, and 5 corresponds to E. The embodiment obtains the cold and hot feeling temperature by combining the windshield and the area where people are located in the refrigeration or heating mode, improves the accuracy of the cold and hot feeling state of the human body, and improves the comfort level of the air conditioner. The regions where the human body is located are different, the wind shield is different, the correction is corresponding to the T1, and the cold and hot feeling temperature Ta of the regions where the human body is located can be obtained by correcting the T1 according to the correction value.

TABLE 1

TABLE 2

After the thermal sensation temperature is determined, the calculating the thermal sensation state according to the thermal resistance information, the coverage change rate and the thermal sensation temperature comprises: obtaining the contribution of the coverage change rate to the thermal resistance through the thermal resistance information and the coverage change rate, updating to obtain new thermal resistance information, and determining the new thermal resistance information and the calculation coefficient of the cold and hot state corresponding to the cold and hot temperature; and calculating the cold and heat feeling state of the user according to the new thermal resistance information, the cold and heat feeling temperature and the corresponding calculation coefficient. The new thermal resistance information and the new thermal resistance information are corresponding to the calculated coefficients corresponding to the thermal sensation, the calculated coefficients of the thermal resistance information and the calculated coefficients of the thermal sensation are set values or obtained through experiments, the new thermal resistance information and the new thermal sensation temperature of the bedding system in the room in the sleep state are obtained, and the thermal sensation state is calculated according to the corresponding calculated coefficients. The first calculation method: and calculating a first result according to the new thermal resistance information and the corresponding calculation coefficient, calculating a second result according to the thermal sensation temperature and the corresponding calculation coefficient, and calculating the thermal sensation state by combining the first result and the second result with a preset proportionality coefficient, wherein the proportionality coefficient is a set value or is obtained by experiments. Or, the second calculation method: first, a first result is calculated according to the new thermal resistance information and the corresponding calculation coefficient, and then a second result is calculated according to the thermal sensation temperature and the corresponding calculation coefficient, namely, two thermal sensation states are calculated respectively according to the new thermal resistance information and the thermal sensation temperature, and the two thermal sensation states are superposed to obtain the thermal sensation state of the user. In another embodiment of the present invention, a new relationship table between thermal resistance information and thermal sensation state and a relationship table between thermal sensation temperature and thermal sensation state may be established in advance, and the thermal sensation state may be obtained by calculating the new thermal resistance information and the thermal sensation temperature look-up table.

Further, in order to ensure the accuracy of the calculated cold and heat feeling state, when the calculated cold and heat feeling state value is greater than a first preset value, the value of the cold and heat feeling state is a first preset value; and when the calculated value of the cold and heat feeling state is smaller than a second preset value, taking the second preset value as the value of the cold and heat feeling state, wherein the first preset value is larger than the second preset value. The first preset value may be 3 or 4, etc., and the second preset value may be-3 or-4, etc.

The cold and hot feeling state of the human body in the sleeping state can be embodied by specific different values, as shown in the following table:

state value of cold and heat feeling	Interval of cold and heat feeling	Thermal comfort
			-3≤PMV<-2	Interval 8	Cold
-2<PMV≤-1	Interval 7	Is somewhat cooled
			-1<PMV≤0.5	Interval 6	Cool down
-0.5≤PMV<0	Interval 5	Comfort (cool)
			0≤PMV≤0.5	Interval 4	Comfort (somewhat warm)
0.5<PMV≤1	Interval 3	Heating device
			1<PMV≤2	Interval 2	Is a little bit hot
2<PMV≤3	Interval 1	Heat generation

In the above table, the value of the state of cold and heat sensation M is divided into 8 intervals, which respectively represent different cold/heat comfortable feelings of human body.

And step S30, controlling the air conditioner to operate according to the cold and hot feeling state.

And controlling the operation parameters of the air conditioner according to the cold and heat feeling state value of the human body to change the cold and heat feeling state value of the human body to a comfortable interval, wherein the operation parameters of the air conditioner comprise one or more of set temperature, operation wind speed and air guide bar state. For example, the current thermal state value of the human body is 2.5, the human body is in the zone 1, that is, the human body is in a hot state, the set temperature of the air conditioner is automatically reduced to reduce the ambient temperature in the room (the frequency of the compressor is reduced, the wind level of the indoor fan is reduced, and the reduced range corresponds to the value of the set temperature adjustment), so that the thermal state value of the human body is gradually reduced, and finally the thermal state value of the human body is kept in the zone 4, so that the thermal state of the human body is changed to a comfortable state.

In the embodiment, the cold and heat feeling state is calculated through the thermal resistance information, the coverage change rate and the return air temperature of the air conditioner of the bedding system in the sleeping state, and the air conditioner is further controlled to operate according to the cold and heat feeling state. The problem that the control accuracy of the air conditioner is poor due to the fact that the accurate user cold and hot states cannot be provided in the control process of the existing air conditioner is effectively solved. The invention accurately provides the cold and hot feeling state of the user, thereby improving the accuracy of the air conditioner control and improving the comfort level of the air conditioner.

The bedding system is a covering object such as a quilt for covering a human body, and the thermal resistance of the corresponding bedding system can be different due to different covering degrees. In a preferred embodiment of the present invention, referring to fig. 6, the calculation process of the coverage change rate of the bedding system comprises:

step S11, obtaining the area of a heat source in a preset number of cycles;

step S12, calculating an initial coverage area according to the detected heat source area and a preset algorithm;

and step S13, calculating the coverage change rate of the bedding system according to the area of the heat source scanned in each infrared cycle and the initial coverage area.

After the user falls asleep, generally 30min after the user falls asleep, the heat source areas in a preset number of cycles (set according to the user requirements such as 8 or 10) are obtained through infrared equipment, an average heat source area is obtained through calculation, the heat source area obtained through calculation in each cycle is compared with the average area, and the coverage change rate of the mattress system is obtained through calculation, for example, the average heat source area is S, the heat source area obtained in one cycle is S1, and the coverage change rate is (S1-S)/S. In order to calculate the coverage change rate more accurately, in an embodiment of the present invention, the heat source area a is continuously detected for 10 cycles, and two operations are performed. 1) Calculating the average value Av of 10 times to be (A1+ A2+ A3 … … + A10)/10, and removing the value of | Av-An | Av |/Av in (A1-A10); 2) counting the average value Avg of the rest periods as (Ai1+ Ai2+ Aim)/m, wherein m is the number of the rest periods; avg as the initial coverage area of the heat source. The infrared scans the heat source area a for one cycle and compares it to Avg, Δ a ═ a-Avg/a. Presetting the corresponding relation between the delta A and the coverage change rate in advance, and obtaining the coverage change rate of the bedding system according to the corresponding relation. The rate of change of coverage is referenced in the following table:

ΔA	corresponding to Δ Acov coverage change rate
		ΔA≥a％	a1
b％≤ΔA<a％	a2
		c％≤ΔA<b％	a3
d％≤ΔA<c％	a4
		ΔA<d％	a5

The air conditioner comprises a plurality of operation modes, for example, a cooling mode or a heating mode is available, and the air conditioner can operate in the heating mode when the weather is cold in winter; in summer, the weather is hot, and the heating mode can be operated. In a preferred embodiment of the present invention, referring to fig. 7, after the step of calculating the thermal sensation state according to the thermal resistance information, the coverage change rate and the thermal sensation temperature, the method further includes:

step S14, when the operation mode of the air conditioner is a refrigeration mode, if the return air temperature of the air conditioner is less than a first preset temperature, the thermal resistance information is a first thermal resistance value correspondingly;

step S15, if the return air temperature of the air conditioner is higher than a second preset temperature, the thermal resistance information is a second thermal resistance value correspondingly;

step S16, if the return air temperature of the air conditioner is higher than a first preset temperature and lower than a second preset temperature, calculating a third thermal resistance value corresponding to the thermal resistance information according to the first thermal resistance value and a corrected value of the return air temperature of the air conditioner to the thermal resistance, wherein the first preset temperature is lower than the second preset temperature;

step S17, obtaining the correction coefficient of the bedding system coverage change rate to the thermal resistance in the refrigeration mode after obtaining the thermal resistance information, and correcting the thermal resistance information according to the correction coefficient in the refrigeration mode; and calculating the cold and hot feeling state according to the corrected thermal resistance information and the return air temperature of the air conditioner.

When the current operation mode of the air conditioner is a refrigeration mode, the thermal resistance information of the mattress system is corrected according to the return air temperature of the air conditioner. And obtaining the influence of the return air temperature of the air conditioner on thermal resistance information in advance according to multiple times of implementation data and evaluation of the performance of the air conditioner, and setting a correction coefficient of the thermal resistance and the return air temperature of the air conditioner. Specifically, if the return air temperature of the air conditioner is lower than a first preset temperature, the thermal resistance information corresponds to a first thermal resistance value, and if the return air temperature of the air conditioner is higher than a second preset temperature, the thermal resistance information corresponds to a second thermal resistance value; and if the return air temperature of the air conditioner is higher than the first preset temperature and lower than the second preset temperature, calculating a third thermal resistance value corresponding to the thermal resistance information according to the first thermal resistance value and the corrected value of the return air temperature of the air conditioner to the thermal resistance, wherein the first preset temperature is lower than the second preset temperature. The first preset temperature can be 23 degrees or 24 degrees and the like and is set according to the performance of the air conditioner or the user requirement, the second preset temperature can be 29 degrees or 28 degrees and is set according to the performance of the air conditioner or the user requirement, the first thermal resistance value and the second thermal resistance value are set according to the influence of the return air temperature of the air conditioner on the thermal resistance, for example, a reference thermal resistance value Rt1 is provided, a proportionality coefficient a smaller than the first preset temperature and a proportionality coefficient b larger than the second preset temperature are set, the corresponding thermal resistance value smaller than the first preset temperature is a Rt1, and the corresponding thermal resistance value larger than the second preset temperature is b Rt 1; when the return air temperature of the air conditioner is higher than the first preset temperature and lower than the second preset temperature, a proportional coefficient c and a correction value s are correspondingly arranged, and the thermal resistance value under the condition is s × c × Rt 1; after the thermal resistance information is corrected through the return air temperature of the air conditioner, the thermal resistance information is corrected according to the coverage change rate of the mattress system, and a corresponding correction coefficient is fixed, wherein the correction coefficient is delta Acov, and the thermal resistance information after the return air temperature correction of the air conditioner is respectively a + Rt1 (1+ delta Acov), b + Rt1 (1+ delta Acov) and s + c Rt1 (1+ delta Acov).

Further, when in the heating mode, referring to fig. 8, after the step of calculating the thermal sensation state according to the thermal resistance information, the coverage change rate, and the thermal sensation temperature, the method further includes:

step S18, when the operation mode of the air conditioner is a heating mode, if the return air temperature of the air conditioner is less than a third preset temperature, the thermal resistance information is a fourth thermal resistance value correspondingly;

step S19, if the return air temperature of the air conditioner is higher than a fourth preset temperature, the thermal resistance information is a fifth thermal resistance value correspondingly;

step S101, if the return air temperature of the air conditioner is greater than a third preset temperature and less than a fourth preset temperature, calculating according to a second thermal resistance value and a corrected value of the return air temperature of the air conditioner on thermal resistance to obtain a sixth thermal resistance value corresponding to the thermal resistance information, wherein the third preset temperature is less than the fourth preset temperature, the first preset temperature is greater than the third preset temperature, the first preset temperature is less than the fourth preset temperature, and the fourth preset temperature is less than the second preset temperature;

step S102, after obtaining thermal resistance information, obtaining a correction coefficient of the coverage change rate of the bedding system to the thermal resistance in a heating mode, and correcting the thermal resistance information according to the correction coefficient in the heating mode; and calculating the cold and hot feeling state according to the corrected thermal resistance information and the return air temperature of the air conditioner.

The third preset temperature can be 18 degrees or 19 degrees and the like and is set according to the performance of the air conditioner or the user requirement, the second preset temperature can be 26 degrees or 27 degrees and the like and is set according to the performance of the air conditioner or the user requirement, the fourth thermal resistance value and the second thermal resistance value are set according to the influence of the return air temperature of the air conditioner on the thermal resistance, for example, a reference thermal resistance value Rt2 is provided, a proportionality coefficient d smaller than the third preset temperature and a proportionality coefficient e larger than the fourth preset temperature are set, the thermal resistance value corresponding to the temperature smaller than the third preset temperature is d Rt2, and the thermal resistance value corresponding to the temperature larger than the fourth preset temperature is e Rt 2; when the return air temperature of the air conditioner is higher than the third preset temperature and lower than the fourth preset temperature, a proportional coefficient f and a correction value g are correspondingly arranged, and the thermal resistance value under the condition is g × f × Rt 2; after the thermal resistance information is corrected through the return air temperature of the air conditioner, the thermal resistance information is corrected according to the coverage change rate of the mattress system, and a corresponding correction coefficient is fixed, wherein the correction coefficient is delta Acov, and the thermal resistance information after the thermal resistance information is corrected through the return air temperature of the air conditioner is d × Rt2 (1+ delta Acov), e × Rt2 (1+ delta Acov) and g × f Rt2 (1+ delta Acov).

According to the embodiment of the invention, the thermal resistance information is corrected according to the return air temperature of the air conditioner and the coverage change rate of the bedding system in a refrigerating or heating mode, so that the acquired thermal resistance information is more accurate, the acquired cold and hot feeling state is more accurate, the air conditioner is better controlled, and a more comfortable indoor environment is provided.

The invention further provides an air conditioner control device.

In one embodiment, referring to fig. 9, the air conditioner control device includes: the device comprises an acquisition module 10, a calculation module 20 and a control module 30.

The acquisition module 10 is used for acquiring the return air temperature of the air conditioner in a sleep state, the thermal resistance information of a mattress system in a room where the user is located and the coverage change rate;

The calculating module 20 is configured to calculate a cold and hot feeling state according to the thermal resistance information, the coverage change rate, and the return air temperature of the air conditioner; after thermal resistance information, a coverage change rate and the return air temperature of the air conditioner of a bedding system in a room in a sleep state are obtained, the cold and hot feeling state is calculated according to the thermal resistance information, the coverage change rate and the return air temperature of the air conditioner, the coverage change rate contributes to the thermal resistance information, the coverage is large, the coverage is small, the thermal resistance is small, and the thermal resistance information is updated through the coverage rate of the bedding system, so that the thermal resistance information is more accurate. The computing module 20 is further configured to determine a wind level of an indoor fan of an air conditioner and determine an area where the user is located; determining the temperature of cold and heat feeling according to the wind shield, the area and the return air temperature of the air conditioner; and calculating the cold and heat feeling state according to the thermal resistance information, the coverage change rate and the cold and heat feeling temperature.

Acquiring the running wind speed of an air conditioner;

Acquiring a subregion to which the position of the human body belongs;

TABLE 1

TABLE 2

And the control module 30 is used for controlling the operation of the air conditioner according to the cold and hot feeling state.

The bedding system is a covering object such as a quilt for covering a human body, and the thermal resistance of the corresponding bedding system can be different due to different covering degrees. In a preferred embodiment of the present invention, referring to fig. 10, the obtaining module 10 includes:

an obtaining unit 11, configured to obtain a heat source area within a preset number of cycles;

the calculating unit 12 is used for calculating an initial coverage area according to the detected heat source area and a preset algorithm; the computing unit 12 is also used for

After the user falls asleep, generally, 30min after the user falls asleep, the heat source areas in a preset number of cycles (set according to the user requirements such as 8 or 10) are obtained, an average heat source area is obtained through calculation, the heat source area obtained through calculation in each cycle is compared with the average area, and the coverage change rate of the mattress system is obtained through calculation, for example, the average heat source area is S, the heat source area obtained in one cycle is S1, and the coverage change rate is (S1-S)/S. In order to calculate the coverage change rate more accurately, in an embodiment of the present invention, the heat source area a is continuously detected for 10 cycles, and two operations are performed. 1) Calculating the average value Av of 10 times to be (A1+ A2+ A3 … … + A10)/10, and removing the value of | Av-An | Av |/Av in (A1-A10); 2) counting the average value Avg of the rest periods as (Ai1+ Ai2+ Aim)/m, wherein m is the number of the rest periods; avg as the initial coverage area of the heat source. The infrared scans the heat source area a for one cycle and compares it to Avg, Δ a ═ a-Avg/a. Presetting the corresponding relation between the delta A and the coverage change rate in advance, and obtaining the coverage change rate of the bedding system according to the corresponding relation. The rate of change of coverage is referenced in the following table:

The air conditioner comprises a plurality of operation modes, for example, a cooling mode or a heating mode is available, and the air conditioner can operate in the heating mode when the weather is cold in winter; in summer, the weather is hot, and the heating mode can be operated. In a preferred embodiment of the present invention, referring to fig. 11, the obtaining module 10 further includes a modifying unit 13,

the obtaining unit 11 is further configured to, when the operation mode of the air conditioner is a cooling mode, if the return air temperature of the air conditioner is lower than a first preset temperature, determine that the thermal resistance information corresponds to a first thermal resistance value; the acquisition unit 11 is also used for

the calculating unit 12 is further configured to calculate a third thermal resistance value corresponding to the thermal resistance information according to the first thermal resistance value and a corrected value of the air return temperature of the air conditioner to the thermal resistance if the air return temperature of the air conditioner is greater than a first preset temperature and less than a second preset temperature, where the first preset temperature is less than the second preset temperature;

the obtaining unit 11 is further configured to obtain a correction coefficient of the bedding system coverage change rate to the thermal resistance in the refrigeration mode after obtaining the thermal resistance information;

the correction unit 13 is configured to correct the thermal resistance information according to a correction coefficient in a refrigeration mode; the calculating module 20 is further configured to calculate a cold and hot feeling state according to the corrected thermal resistance information and the return air temperature of the air conditioner.

Further, when in the heating mode, the obtaining unit 11 is further configured to, when the operation mode of the air conditioner is the heating mode, if the return air temperature of the air conditioner is less than a third preset temperature, determine that the thermal resistance information corresponds to a fourth thermal resistance value; the acquisition unit 11 is also used for

the calculating unit 12 is further configured to calculate a sixth thermal resistance value corresponding to the thermal resistance information according to the second thermal resistance value and a corrected value of the air return temperature of the air conditioner to the thermal resistance if the air return temperature of the air conditioner is greater than a third preset temperature and less than a fourth preset temperature, where the third preset temperature is less than the fourth preset temperature, the first preset temperature is greater than the third preset temperature, the first preset temperature is less than the fourth preset temperature, and the fourth preset temperature is less than the second preset temperature;

the obtaining unit 11 is further configured to obtain a correction coefficient of the thermal resistance by the coverage change rate of the bedding system in the heating mode after obtaining the thermal resistance information;

the correcting unit 13 is further configured to correct the thermal resistance information according to a correction coefficient in a heating mode;

the calculating module 20 is further configured to calculate a cold and hot feeling state according to the corrected thermal resistance information and the return air temperature of the air conditioner.

According to the embodiment of the invention, the thermal resistance information is corrected according to the return air temperature of the air conditioner in the refrigeration or heating mode, so that the acquired thermal resistance information is more accurate, the acquired cold and heat feeling state is more accurate, the air conditioner is better controlled, and a more comfortable indoor environment is provided.

The invention also provides an air conditioner, and the air conditioner control device is used in the air conditioner. The air conditioner comprises an indoor unit, an outdoor unit, an air pipe and other necessary hardware. The air conditioner calculates the cold and hot feeling state through the thermal resistance information, the coverage change rate and the return air temperature of the air conditioner in the sleeping state, and further controls the air conditioner to operate according to the cold and hot feeling state. The problem that the control accuracy of the air conditioner is poor due to the fact that the accurate user cold and hot states cannot be provided in the control process of the existing air conditioner is effectively solved. The invention accurately provides the cold and hot feeling state of the user, thereby improving the accuracy of the air conditioner control and improving the comfort level of the air conditioner.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. An air conditioner control method is characterized by comprising the following steps:

acquiring the return air temperature of the air conditioner in a sleep state, the thermal resistance information of a bedding system in the environment where the air conditioner is located and the coverage change rate; the bedding system is a bedding article covered on the body of a user;

controlling the air conditioner to operate according to the cold and hot feeling state;

the step of obtaining the coverage change rate of the bedding system in the sleep state comprises the following steps:

obtaining the area of a heat source in a preset number of cycles;

calculating the coverage change rate of the bedding system according to the area of the heat source scanned in each infrared period and the initial coverage area;

the step of calculating the initial coverage area according to the detected heat source area and a preset algorithm comprises the following steps:

determining a period in which the relative deviation of the areas of the heat sources in the preset number of periods is less than or equal to a preset deviation as a target period;

calculating the initial coverage area according to the heat source area of the target period;

the step of calculating the cold and hot feeling state according to the thermal resistance information, the coverage change rate and the return air temperature of the air conditioner comprises the following steps:

2. The air conditioner controlling method as set forth in claim 1, wherein after said step of calculating a thermal sensation state based on said thermal resistance information, a coverage change rate and said thermal sensation temperature, further comprising:

3. The air conditioner controlling method as set forth in claim 2, wherein after said step of calculating a thermal sensation state based on said thermal resistance information, a coverage change rate and said thermal sensation temperature, further comprising:

4. An air conditioner control device, comprising:

the acquisition module is used for acquiring the return air temperature of the air conditioner in a sleep state, and the thermal resistance information and the coverage change rate of a bedding system in the environment where the air conditioner is located; the bedding system is a bedding article covered on the body of a user;

the control module is used for controlling the air conditioner to operate according to the cold and hot feeling state;

the acquisition module includes:

the calculating unit is used for calculating the initial coverage area according to the detected heat source area and a preset algorithm;

the calculating unit is also used for calculating the coverage change rate of the bedding system according to the area of the heat source scanned in each infrared period and the initial coverage area;

the calculation unit is further used for determining a period in which the relative deviation of the areas of the heat sources in the preset number of periods is less than or equal to a preset deviation as a target period; calculating the initial coverage area according to the heat source area of the target period;

the computing module is also used for determining the wind level of an indoor fan of the air conditioner and determining the area where the user is located; determining the temperature of cold and heat feeling according to the wind shield, the area and the return air temperature of the air conditioner; and calculating the cold and heat feeling state according to the thermal resistance information, the coverage change rate and the cold and heat feeling temperature.

5. The air conditioner control device according to claim 4, wherein said acquisition module further includes a correction unit,

6. The air conditioner control device according to claim 5, wherein the obtaining unit is further configured to, when the operation mode of the air conditioner is a heating mode, if a return air temperature of the air conditioner is lower than a third preset temperature, correspond the thermal resistance information to a fourth thermal resistance value; and also used for

7. An air conditioner characterized by comprising the air conditioner control device as claimed in any one of claims 4 to 6.