WO2019034123A1

WO2019034123A1 - Smart air conditioner control method and smart air conditioner

Info

Publication number: WO2019034123A1
Application number: PCT/CN2018/100888
Authority: WO
Inventors: 王荟桦; 刘聚科
Original assignee: 青岛海尔空调器有限总公司
Priority date: 2017-08-18
Filing date: 2018-08-16
Publication date: 2019-02-21
Also published as: CN107525237A; CN107525237B

Abstract

A smart air conditioner control method and an air conditioner, said control method comprising: using an infrared sensor (200-1, 200-2, 200-3) to define a working area in an air-conditioning room; and determining whether the indoor ambient temperature satisfies a set indoor ambient temperature condition of a smart control mode, and if so, using the infrared sensor (200-1, 200-2, 200-3) to detect whether there is a person in the working area, and if so, executing a first control policy, and if not, executing a second control policy. The first control policy comprises: using a radar sensor (300-1, 300-2) to detect a distance from the person, and at the same time calculating, by sampling, the comfort degree of the human body; controlling the air supply speed and the air supply temperature according to the distance and the comfort degree of the human body, so as to enable the comfort degree of the human body to reach a standard comfort degree; and the second control policy comprises: correcting the set temperature, so as to use the corrected set temperature as a target temperature to operate the air conditioner.

Description

Intelligent air conditioner control method and intelligent air conditioner

Technical field

The present invention relates to the field of air conditioning technology, and in particular, to a smart air conditioner control method, and a smart air conditioner to which the control method is applied.

Background technique

The air conditioner control method based on human comfort is a new development direction of the air conditioner. There are many factors affecting the thermal comfort of the human body. In the prior art, the PMV index is basically used to judge the comfort of the human body. The PMV indicator combines six comfort parameters to assess human comfort, including room temperature, humidity, radiant temperature, garment thermal resistance, metabolic rate, and wind speed. Air conditioners sold on the market are usually provided with a temperature sensor, but basically no humidity sensor is provided. If you use the PMV indicator to evaluate human comfort, you first need to install a humidity sensor on the air conditioner to detect the humidity and collect the wind speed. However, radiation temperature, clothing thermal resistance and metabolic rate cannot be directly detected by sensors.

The method adopted in the prior art is that, according to the detected return air temperature and the return air humidity, the radiation temperature, the indoor environmental temperature and the indoor environmental humidity are calculated according to a preset calculation rule, and the table is obtained according to the indoor environmental temperature. The preset clothing thermal resistance corresponding to the indoor ambient temperature. Detect the state of human activity in the room, and check the table to obtain the preset metabolic rate corresponding to the state of human activity. See the Chinese invention patent "Method and Device for Controlling the Comfort of Air Conditioners", application number 201410155235.8. It is not difficult to see that since the radiation temperature, the preset clothing thermal resistance and the preset metabolic rate need to be obtained by querying the data table, the data processing capability of the hardware of the air conditioner itself and the data storage amount have very high requirements. On the one hand, the cost of the air conditioner is significantly increased, and on the other hand, in order to maintain the accuracy of the data, professionals are required to maintain and update the data sheet. Moreover, due to the large number of input parameters, any change of data will cause interference to the detection and calculation of comfort. Multi-channel interference makes the output of the control system fluctuate greatly, the output of the control signal lags, and the actual experience of the user is not good.

Summary of the invention

In order to solve the problem that the air conditioner control method for evaluating human comfort based on the PMV index in the prior art has high cost, large data processing amount, large fluctuation of control system output, and obvious lag, the present invention discloses a smart air conditioner control method.

A smart air conditioner control method includes the following steps:

Using an infrared sensor to divide the working area in the air-conditioned room;

Determining whether the indoor ambient temperature satisfies the set indoor ambient temperature condition of the intelligent control mode, and if yes, detecting whether there is any person in the working area by using an infrared sensor;

If there is a person in the work area, executing a first control policy; if no one is in the work area, executing a second control policy;

The first control strategy includes: detecting a distance of a person by using a radar sensor, simultaneously calculating and calculating the comfort of the human body, controlling the air supply wind speed and the air supply temperature according to the distance and the human body comfort, so that the human body comfort reaches a standard comfort level;

The second control strategy includes: correcting the set temperature, and controlling the air conditioner to operate with the corrected set temperature as the target temperature;

Human comfort is sampled by the following steps:

Collecting the user's real-time clothing body surface temperature Ts; collecting the real-time building internal surface temperature Tq in the air-conditioned room; collecting the real-time ambient temperature Th in the air-conditioned room; calculating the real-time human comfort C', C'=h _r · (T _s -T _q )+h _c ·(T _s -T _h ), where hr and hc are constants, where hr is the radiant thermal conductivity and hc is the convective thermal conductivity.

Further, the infrared sensor is used to divide a plurality of working areas in the air-conditioned room, and the working area includes at least a first working area and a second working area.

If there are people in the first working area and the second working area, the radar sensor is used to detect the distances of the people in the first working area and the second working area, respectively, and the human body comfort in the first working area is separately sampled and calculated. Degree and human comfort in the second working area; controlling the air supply wind speed and the supply air temperature of the first working area by using the distance of the person in the first working area and the human body comfort in the first working area, respectively, using the second working area The distance between the inside person and the human body comfort in the second work area controls the supply air speed and the supply air temperature of the second work area; the air supply of the first work area and the second work area is independently controlled.

Further, when there are multiple users in the first working area and/or the second area, one user with the largest deviation of comfort is selected as the control object, and the first working area is controlled according to the comfort level and distance of the control object and/or Or the supply air velocity and the supply air temperature of the second working area, so that the comfort of the control object reaches the standard comfort.

Further, the infrared sensor includes at least a first infrared sensor, a second infrared sensor, and a third infrared sensor disposed in a horizontal direction, the infrared sensor having a horizontal viewing angle of 120°, a first infrared sensor, a second infrared sensor, and At least two viewing angle ranges in the third infrared sensor overlap and form an overlapping area, the first working area and the second working area being formed in the one or more overlapping areas.

Further, the maximum air supply angle of the air conditioner covers a horizontal viewing angle of the first infrared sensor, the second infrared sensor, and the third infrared sensor.

Further, the radar includes a first radar sensor and a first radar sensor disposed in a horizontal direction, and the first radar sensor and the first radar sensor have a coverage angle of 100°.

Further, in the first control strategy, the blowing wind speed increases as the human comfort deviation and the distance increase.

Further, if the indoor ambient temperature does not satisfy the set indoor ambient temperature condition of the intelligent control mode, the air conditioning operating condition is automatically determined according to the indoor ambient temperature, and is operated according to the set temperature corresponding to the set air conditioning operating condition.

Preferably, the inner surface temperature of the building is a surface temperature of a wall facing the air outlet of the air conditioner; or the inner surface temperature of the building is an average value of the inner surface temperature of all inner walls of the air-conditioned room.

The control method of the intelligent air conditioner disclosed by the invention reduces the number of air parameters affecting user comfort through a new data model, reduces the parameter processing amount of the control system and the system hardware requirement, and further reduces the cost of the air conditioner; At the same time, it fully supplies air to the working area of the air-conditioned room, adjusts the wind speed and the supply air temperature, and has better comfort.

At the same time, an air conditioner is disclosed, which adopts a smart air conditioner control method, and the intelligent air conditioner control method comprises the following steps:

Human comfort is sampled by the following steps:

The invention has the advantages of good intelligence and good user experience.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

1 is a flow chart of an embodiment of a method for controlling a smart air conditioner disclosed in the present invention;

2 is a flow chart of calculating human comfort in the smart air conditioner control method disclosed in the present invention;

3 is a cross-sectional view of an air conditioner to which the above intelligent air conditioner control method can be applied;

Figure 4 is an exploded view of the air conditioner shown in Figure 3;

Figure 5 is a front elevational view of the air conditioner of Figure 4;

6 is a schematic view of a viewing angle range of an air conditioner provided with three infrared sensors;

FIG. 7 is a schematic block diagram of an embodiment of a smart air conditioner disclosed in the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Referring to FIG. 7, the air conditioner 100 may generally include an indoor unit 1000 and an outdoor unit 2000, and an electrical connection is formed between the indoor unit 1000 and the outdoor unit 2000. The indoor unit 1000 and the outdoor unit 2000 constitute a vapor compression refrigeration cycle system for achieving cooling and heating of the indoor environment. Specifically, the outdoor unit 2000 is provided with a compression refrigeration structure such as a compressor and an outdoor heat exchanger, and the indoor unit 1000 is provided with a compression refrigeration structure such as an indoor heat exchanger. The working principle of the vapor compression refrigeration cycle system is well known to those skilled in the art and will not be described herein. The indoor unit 1000 may be provided with an air outlet 14 for air supply, and the arrow in FIG. 7 is a general air blowing direction of the indoor unit 1000 in one embodiment, and W1, W2, W3, and W4 are indoor units 1000. The wall inside the room. The indoor wall surface may be composed of four straight wall surfaces, or may be composed of a single curved wall surface, or may be composed of any other number of walls of any shape. The indoor unit 1000 may be a cabinet type and disposed at any position in the room, or may be wall-mounted and disposed on any wall in the room.

1 is a flow chart showing a specific embodiment of a smart air conditioner control method disclosed in the present invention. As shown in FIG. 1, as shown in step S101, after the air conditioner is turned on, the infrared sensor disposed on the air conditioner automatically divides the work area in the air-conditioned room. The infrared sensor may be at least one of a pyroelectric sensor, a thermopile sensor, or a thermal imaging sensor. A pyroelectric sensor is preferred. The infrared sensor has a certain working angle of view, and it can be detected whether there is any person in the working angle of view. The specific principle of detecting whether a human body exists by an infrared sensor is disclosed in the prior art and is well known to those skilled in the art, and has been maturely applied to a somatosensory device, and is not a protection focus of the present invention. No specific introduction is made here. Preferably, the working angle of the infrared sensor in the air-conditioned room is the working area. After the air conditioner is turned on, as shown in step S102, it is first determined whether the indoor ambient temperature satisfies the set indoor ambient temperature condition of the intelligent control mode. If the indoor ambient temperature is relatively mild, the first control target is to control the indoor ambient temperature, and the intelligent control mode is not entered. Preferably, the indoor ambient temperature condition is set to be 15 ° C to 30 ° C. When the indoor ambient temperature detected in real time belongs to the above interval, it is determined that the set indoor environmental temperature condition satisfying the intelligent control mode is entered or allowed to enter the intelligent control mode.

As shown in step S103 of FIG. 1, after the air conditioner enters the intelligent control mode, the infrared sensor detects whether there is a person in the working area. If there is someone in the work area. Then the first control strategy is executed, step S104. The first control strategy includes detecting the distance of the person using the radar sensor while sampling and calculating the comfort of the human body, as shown in step S106. The air supply wind speed and the air supply temperature are controlled according to the distance and the human body comfort, so that the human body comfort reaches the standard comfort level, as shown in step S107. As shown in step 108, if there is no person in the work area, the set temperature is corrected, and the corrected set temperature is used as the target temperature control air conditioner operation, as shown in step S109.

A more preferred way of dividing the working area by the infrared sensor is to divide the plurality of working areas in the air-conditioned room by using two infrared sensors, the working area including at least the first working area and the second working area. FIG. 3 to FIG. 5 are structural diagrams of an air conditioner according to a smart air conditioner control method disclosed in an embodiment. As shown, the smart air conditioner includes a base 500 and at least two air conditioning bodies disposed on the base 500. That is, the first air conditioning body 1 and the second air conditioning body 2 are as shown. The first air conditioning body 1 and the second air conditioning body 2 may together constitute an indoor unit 1000. Taking the two air conditioner bodies as an example, the specific structure of the vertical air conditioner is specifically introduced. The base 500 is surrounded by a base rear wall 9, a

base side wall

7, 8, a base front wall 6, and a chassis. A functional component 4 such as a humidifying member is disposed in the base 500. The first air conditioning body 1 includes a first housing 10 and a first drainage duct B1 formed in the first housing 10, and the second air conditioning body 2 includes a second housing 20 and a second portion formed in the second housing 20. Second drainage duct B2.

The first housing 10 and the second housing 20 are independently spaced apart without airflow interference therebetween. The first housing 10 includes a first housing rear wall 10-1, a first housing top wall 10-2, and a first housing front wall 10-3, a first housing rear wall 10-1, and a first housing Both the top wall 10-2 and the first housing front wall 10-3 are designed to be streamlined. The second housing 20 includes a second housing rear wall 20-1, a second housing top wall 20-2, and a second housing front wall 20-3. The second housing top wall 20-2 and the second housing front wall 20-3 are designed to be streamlined. A first air inlet 11 is defined in the first housing rear wall 10-1, and a first air outlet 14 is defined in the first housing front wall 10-3, and the first housing 10 is provided with a first throughflow. The fan 13 and the first heat exchanger 12. The first flow fan 13 includes a first cross flow fan fan 131 and a first cross flow fan motor 132, and the second cross flow fan 23 includes a second cross flow fan fan 231 and a second cross flow fan motor 232. The first flow fan motor 132 is disposed in the first housing top wall 10-2. The first air inlet 11, the first heat exchanger 12, the first cross flow fan 13, and the first air outlet 14 are sequentially disposed in the first draft air passage B1 in the air flow direction. A second air outlet 24 is defined in the front wall of the second housing 20, a second air inlet 12 is defined in the second housing rear wall 20-1, and a second cross flow fan 23 is disposed in the second housing 20. And a second heat exchanger 22. The second cross flow fan motor 232 is disposed in the second housing top wall 20-2. The second air inlet 12, the second heat exchanger 22, the second cross flow fan 23, and the second air outlet 24 are sequentially disposed in the second draft air passage B2 in the air flow direction. The first air conditioning body 1 and the second air conditioning body 2 are disposed adjacent to each other. A through air duct A is formed between the first housing 10 and the second housing 20, and passes through the first housing front wall 10-3 and the first housing. The streamlined design of the wall 10-1 and the first housing top wall 10-2 and the streamlined design of the second housing front wall 20-3, the second housing rear wall 20-1 and the second housing top wall 20-2 The cross-sectional shape of the through-air passage A is defined to further define the flow rate and flow direction of the air passing through the air passage A. The air in the first draft air passage B1 and the second air flow duct B2 and the air in the through air passage A are mixed in the through air passage. The through air passage A is preferably in the form of a double horn that is gradually expanded to reduced to then expanded as shown in FIG. The confluence preferably occurs between the first air outlet 14 and the second air outlet 24, that is, the middle portion and the front end of the air passage A. The mixed air is sent to a designated area of the air-conditioned room.

A first infrared sensor 200-1 is disposed on the first air conditioning body 1, and a second infrared sensor 200-2 is disposed on the second air conditioning body 2. The viewing angle range of the first infrared sensor 200-1 is the first working area, and the viewing angle range of the second infrared sensor 200-2 is the second working area. The first infrared sensor 200-1 is centered on the position of the sensor, and the angle of view covers 120°. The second infrared sensor 200-2 also takes the position of the sensor as the center line, and the angle of view covers 120°. The first infrared sensor 200-1 and the second infrared sensor 200-2 are preferably disposed on the first housing front wall 10-3 and the second housing front wall 20-3. Correspondingly, a first radar sensor 300-1 is further disposed on the first housing front wall 10-3, and a second radar sensor 300-2 is further disposed on the second housing front wall 20-3. The coverage angle of the first radar sensor 300-1 and the second radar sensor 300-2 in the horizontal direction is preferably 100°. After experimentation, the 100° horizontal coverage angle of the radar sensor ensures that there is no dead space in the room. The distance between the person and the air conditioning body can be judged by the feedback signal of the radar sensor.

Taking the air conditioner shown in FIG. 3 to FIG. 5 as an example, after the first working area and the second working area are divided, the first infrared sensor 200-1 and the second infrared sensor 200-2 detect the first working area and Whether there is any person in the second working area, if there is someone in the first working area, detecting the distance between the person in the first working area and the first air conditioning body 1, and calculating the comfort of the person in the first working area, using the first radar sensor The distance obtained by 300-1 and the calculation of the sampled human comfort degree select the wind speed to control the operation of the first cross flow fan 13, and at the same time control the coil temperature of the first heat exchanger 12 to correspond to the distribution of the refrigerant flow rate. The set value is such that the air supply of the first air outlet 14 has a set supply air temperature, and the human body comfort gradually reaches the standard comfort level. If a person in the second working area uses a similar manner to detect the distance between the person in the second working area and the second air conditioning body 2, the comfort of the person in the second working area is calculated, and the second radar sensor 300-2 is used. The distance controls the operation of the second cross flow fan 23 corresponding to the selected human body comfort level, and controls the coil temperature of the second heat exchanger 22 to reach a corresponding set value by distributing the refrigerant flow rate. The air supply of the second air outlet 24 has a set supply air temperature, and the human body comfort of the second work area gradually reaches the standard comfort level. If there is no one in the first working area and the second working area, the set temperature is automatically corrected, and the corrected set temperature is used as the target temperature to control the operation of the air conditioner. In this way, even if the user temporarily leaves the air-conditioned room, the air parameters in the air-conditioned room can be kept stable while reducing the energy consumption of the air conditioner. Preferably, the corrected set temperature in the cooling mode is 26 ° C, and after the corrected set temperature is reached, the low-frequency operation of the air conditioner is maintained, and the indoor ambient temperature is maintained at 26 ° C. The corrected set temperature in the heating mode is 22 ° C. After the corrected set temperature is reached, the low-frequency operation of the air conditioner is maintained, and the indoor ambient temperature is maintained at 22 ° C.

The structure of the above air conditioner is only a preferred structure, and the smart air conditioner control method disclosed in the embodiment can be applied to an air conditioner having one independently operated fan or two or more independently operated fans. When there are multiple users in the working area, such as the first working area and the second working area as described above, a user with the largest deviation of comfort is selected as the control object, and the first control is performed according to the comfort level and distance of the control object. The supply air velocity and the supply air temperature of the work area and/or the second work area are such that the comfort of the control object reaches standard comfort. The comfort deviation is the difference between the actual comfort sampled calculated value and the standard comfort.

Unlike the PMV model used in the prior art, the user comfort in an air-conditioned room is obtained in a completely new way. Referring to FIG. 2, the acquisition calculation obtains user comfort includes the following steps: collecting the real-time clothing body surface temperature Ts of the user (step S501); collecting the real-time building inner surface temperature Tq in the air-conditioned room (step S502); collecting the air-conditioned room Real-time ambient temperature Th within (step S503); calculating real-time human comfort C' (step S504), C'=h _r ·(T _s -T _q )+h _c ·(T _s -T _h ), where hr And hc are constants, where hr is the radiant thermal conductivity and hc is the convective thermal conductivity. Generally speaking, the value of hr is between 4W/(m ² ·°C) and 5W/(m ² ·°C), and the value of hc is from 3W/(m ² ·°C) to 4W/(m ² ·°C). )between. Radiant thermal conductivity and convective thermal conductivity are typically set and stored in the controller of the air conditioner for immediate access. The human body real-time dressing body surface temperature Ts can be detected by an infrared sensor provided on the air conditioner. The internal surface temperature Tq of the building can be detected by a temperature sensor that is in direct contact with the wall surface, the top surface, and the ground, or can be detected by an infrared sensor or a thermal imager. The inner surface temperature Tq may be the wall surface temperature of the air conditioner installation contact, the surface temperature of the wall surface facing the air outlet of the air conditioner, or the temperature of the top wall or the temperature of the ground. For home users, other factors such as the temperature of the room in the upper and lower neighborhoods and the change in the sunshine time caused by the orientation of the building may also affect the temperature of the inner surface of the air-conditioned room. Therefore, the real-time building inner surface temperature Tq is preferably an average value of the inner surface temperatures of all the inner walls of the air-conditioned room. The real-time ambient temperature Th is preferably the inlet air temperature of the air conditioning return port 15. The human body real-time clothing body surface temperature Ts, the real-time building internal surface temperature Tq, and the real-time ambient temperature Th in the air-conditioned room have the same sampling frequency. The sampling frequency is preferably 1/min. The sampling frequency can be increased or decreased moderately. In the cooling mode, the target temperature can be reached in a short time after starting up, and with the operation of the cooling mode, the humidity of the air-conditioned room has little effect on the comfort of the human body, while in the heating mode, due to the outdoor The ambient temperature is low and the effect of humidity on human comfort is negligible. Therefore, the human comfort calculated by the model disclosed in the embodiment can significantly reduce the amount of data processing, and at the same time, the obtained human comfort is based on real-time detection parameters rather than experimentally obtained inherent data, so it is more practical. Human comfort. In cooling mode, the human body status includes cold, slightly cold and comfortable, and the corresponding comfort is (2.5, 3), (0.5, 2.5) and (0, 0.5). In the heating mode, the human body state includes heat, heat and comfort, and the corresponding comfort levels are (2.5, 3), (0.5, 2.5) and (0, 0.5). The standard comfort is a comfort level corresponding to the human body state, which is a fixed value between intervals (0, 0.5). When the comfort is positive, the difference in the comfort calculation formula is the absolute value. In some applications where the accuracy of the air conditioning accuracy is better, an independent processing bit can also be set in the air conditioner controller, and the comfort has a sign bit. Standard comfort is a value between the intervals (-0.5, 0.5).

The preferred parameters of a set of first control strategies are provided below, wherein the supply wind speed increases as the human comfort deviation and distance increase.

As shown in FIG. 6, in the present embodiment, it is preferable to provide three infrared sensors of the same model and having the same viewing angle range, that is, the first infrared sensor 200-1, the second infrared sensor 200-2, and the third as shown. The infrared sensor 200-3, the first infrared sensor 200-1, the second infrared sensor 200-2, and the third infrared sensor 200-3 are sequentially arranged in the horizontal direction and are disposed at a certain height, and the height is preferably 1 m, so as to avoid an air-conditioned room. The pet entering the work area causes the air conditioner to malfunction. Preferably, the spacing in the horizontal direction is equal and the coverage is average. The set height can be adjusted according to the needs of the air-conditioned room. The working angle range α of the first infrared sensor 200-1, the second infrared sensor 200-2, and the third infrared sensor 200-3 is preferably 120°, thereby dividing the air-conditioned room into six areas as shown in the figure, that is, The AF shown in Fig. 6. The viewing angle range of the first infrared sensor 200-1 and the second infrared sensor 200-2 overlaps at the area B, D and forms an overlapping area, and the viewing angle range of the second infrared sensor 200-2 and the third infrared sensor 200-3 is The regions D and E overlap and form an overlapping region. If the people in the air-conditioned room are concentrated in the area D, the first working area and the second working area are independently controlled and the air is controlled by the area D, and the user's human comfort in the area D can be quickly adjusted to standard comfort. degree. If it is an air conditioner structure as exemplified in the drawings, the area D is formed between the first air conditioning body 1 and the second air conditioning body 2 and is located at the front end of the air conditioner, and the air conditioner forms a mixed flow at the area D, and the user located in the D area can Get the best air conditioning experience. For this configuration, the third infrared sensor 200-3 may be disposed on the base 500, or may be disposed between the first air conditioning body 200-1 and the second air conditioning body 200-2 (not shown in the figure) )on. The maximum air blowing angle of the air conditioner covers the horizontal viewing angles of the first infrared sensor 200-1, the second infrared sensor 200-2, and the third infrared sensor 200-3. If the user is only at the area D, the air supply angles of the first air conditioner body 1 and the second air conditioner body 2 are controlled to be the same as the coverage angle of the area D.

If the indoor ambient temperature does not satisfy the set indoor ambient temperature condition of the intelligent control mode, the automatic ambient temperature determines the air conditioning operating condition. If the indoor ambient temperature is higher than 30 °C, the air conditioner automatically enters the cooling mode, and the air conditioner is operated at the maximum power to make the indoor ambient temperature lower than 30 °C. If the indoor ambient temperature is lower than 15 °C, the air conditioner automatically enters the heating mode, and the air conditioner is operated at the maximum power to make the indoor ambient temperature higher than 15 °C.

By adopting the control method of the intelligent air conditioner disclosed in the embodiment, the number of air parameters affecting the user's comfort is reduced by the new data model, the parameter processing amount of the control system and the system hardware requirement are reduced, and the air conditioner is further reduced. Cost; at the same time fully air supply to the working area of the air-conditioned room, adjust the wind speed and supply air temperature, with better comfort.

The invention also discloses an air conditioner, which adopts the intelligent air conditioner control method disclosed in the above embodiment. For the specific steps of the control method, refer to the detailed description of the above embodiment, and it is not described herein again that the air conditioner using the above intelligent air conditioner control method has the same technical effect.

It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not limited thereto; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that The technical solutions described in the foregoing embodiments are modified, or the equivalents of the technical features are replaced. The modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

A smart air conditioner control method, comprising the steps of:

Using an infrared sensor to divide the working area in the air-conditioned room;

Determining whether the indoor ambient temperature satisfies the set indoor ambient temperature condition of the intelligent control mode, and if yes, detecting whether there is any person in the working area by using an infrared sensor;

If there is a person in the work area, executing a first control policy; if no one is in the work area, executing a second control policy;

The first control strategy includes: detecting a distance of a person by using a radar sensor, simultaneously calculating and calculating the comfort of the human body, controlling the air supply wind speed and the air supply temperature according to the distance and the human body comfort, so that the human body comfort reaches a standard comfort level;

The second control strategy includes: correcting the set temperature, and controlling the air conditioner to operate with the corrected set temperature as the target temperature;

Human comfort is sampled by the following steps:

Collecting the user's real-time clothing body surface temperature Ts; collecting the real-time building internal surface temperature Tq in the air-conditioned room; collecting the real-time ambient temperature Th in the air-conditioned room; calculating the real-time human comfort C',

C'=h r ·(T s -T q )+h c ·(T s -T h ), where hr and hc are constants, where hr is the radiant thermal conductivity and hc is the convective thermal conductivity.
A smart air conditioner control method according to claim 1, wherein

Dedicating a plurality of work areas in the air-conditioned room by using an infrared sensor, the work area including at least a first work area and a second work area,

If there are people in the first working area and the second working area, the radar sensor is used to detect the distances of the people in the first working area and the second working area, respectively, and the human body comfort in the first working area is separately sampled and calculated. Degree and human comfort in the second working area; controlling the air supply wind speed and the supply air temperature of the first working area by using the distance of the person in the first working area and the human body comfort in the first working area, respectively, using the second working area The distance between the inside person and the human body comfort in the second work area controls the supply air speed and the supply air temperature of the second work area; the air supply of the first work area and the second work area is independently controlled.
The intelligent air conditioner control method according to claim 2, wherein

When there are multiple users in the first working area and/or the second area, one user with the largest deviation of comfort is selected as the control object, and the first working area and/or the second is controlled according to the comfort level and distance of the controlled object. The air supply speed and the supply air temperature in the work area make the comfort of the control object reach the standard comfort.
The intelligent air conditioner control method according to claim 3, wherein

The infrared sensor includes at least a first infrared sensor, a second infrared sensor, and a third infrared sensor disposed in a horizontal direction, the infrared sensor having a horizontal viewing angle of 120°, a first infrared sensor, a second infrared sensor, and a third infrared At least two viewing angle ranges in the sensor overlap and form an overlapping area, the first working area and the second working area being formed in the one or more overlapping areas.
The intelligent air conditioner control method according to claim 4, wherein a maximum air blowing angle of the air conditioner covers a horizontal viewing angle of the first infrared sensor, the second infrared sensor, and the third infrared sensor.
The intelligent air conditioner control method according to claim 5, wherein the radar comprises a first radar sensor and a first radar sensor disposed in a horizontal direction, and a coverage angle of the first radar sensor and the first radar sensor It is 100°.
The intelligent air conditioner control method according to claim 6, wherein in the first control strategy, the blowing wind speed increases as the human body comfort deviation and the distance increase.
The intelligent air conditioner control method according to claim 7, wherein if the indoor ambient temperature does not satisfy the set indoor ambient temperature condition of the intelligent control mode, the air conditioning operating condition is automatically determined according to the indoor ambient temperature, and according to the setting The set temperature is corresponding to the air conditioning operating condition.
The intelligent air conditioner control method according to claim 1, wherein the inner surface temperature of the building is a surface temperature of a wall facing the air outlet of the air conditioner; or the inner surface temperature of the building is an air-conditioned room. The average of the inner surface temperatures of all inner walls.
An air conditioner characterized by employing the smart air conditioner control method according to claim 1.