WO2019127967A1

WO2019127967A1 - Wind-senseless control method and device, readable storage medium, and air conditioner

Info

Publication number: WO2019127967A1
Application number: PCT/CN2018/081479
Authority: WO
Inventors: 屈金祥
Original assignee: 广东美的制冷设备有限公司; 美的集团股份有限公司
Priority date: 2017-12-28
Filing date: 2018-03-31
Publication date: 2019-07-04
Also published as: EP3604958A1; CN108180607A; JP6940623B2; EP3604958A4; JP2020517508A

Abstract

A wind-senseless control method, comprising the following steps: when a fan turns on a wind-senseless mode, detecting whether a person is present in a target area (S10); if a person is present in the target area, acquiring an actual human body surface temperature Tsk, a human body activity metabolic rate M and an indoor temperature Ta (S20); acquiring a wind-senseless index PD of the current fan, an air flow rate Va, the rotation speed RPM of the fan, and an air turbulence intensity Tu (S30); determining a target temperature Tbs of the current fan according to the actual human body surface temperature Tsk, the human body activity metabolic rate M, the wind-senseless index PD, the air flow rate Va, and the air turbulence intensity Tu (S40); and adjusting, according to the difference between the indoor temperature Ta and the target temperature Tbs, the compressor frequency and the rotation speed RPM of the fan (S50). Further provided are a wind-senseless control device, a readable storage medium, and an air conditioner. The present invention implements more accurate wind-senseless control of the fan by combining the movement state of a person, providing a better wind-senseless experience.

Description

Windless control method, device and readable storage medium, air conditioner

Technical field

The invention relates to the field of air conditioner control, in particular to a windlessness control method, device and readable storage medium, and an air conditioner.

Background technique

With the improvement of living standards, people's requirements for quality of life have gradually increased. Many technical fields closely related to people's quality of life, such as air conditioners and other household appliances, often require accurate identification of the human body's activity status. For the existing air conditioner with the windless control function, it is necessary to further provide a windless control mode that is more precise and comfortable for the user's activity state.

The above content is only used to assist in understanding the technical solutions of the present invention, and does not constitute an admission that the above is prior art.

Summary of the invention

The main object of the present invention is to provide a windlessness control method, apparatus, and readable storage medium, and an air conditioner, which are intended to provide a windless control mode that is more precise and comfortable for the user's active state.

To achieve the above object, the present invention provides a windlessness control method, and the windlessness control method includes the following steps:

When the fan is turned on in the windless mode, it is detected whether there is a human body in the target area;

If the target area exists in the human body, obtaining the actual body surface temperature Tsk, the human body activity metabolic rate M, and the indoor temperature Ta;

Obtaining a windlessness index PD corresponding to the windless mode of the current fan, an air flow rate Va, a speed RPM of the fan, and an air turbulence intensity Tu;

Determining a target temperature Tbs of the current fan according to the actual body surface temperature Tsk, the human activity metabolic rate M, the windlessness index PD, the air flow velocity Va, and the air turbulence intensity Tu;

The compressor frequency of the fan and the rotational speed RPM of the fan are adjusted according to a difference between the indoor temperature Ta and the target temperature Tbs.

Preferably, the step of detecting whether a human body exists in the target area when the fan is turned on in the windless mode includes:

When the fan is turned on in the windless mode, the target area is scanned by the infrared sensor to obtain temperature scan data of the target area;

Determining whether the target area has a human body based on the temperature scan data.

Preferably, the step of acquiring the actual body surface temperature Tsk of the human body comprises:

Measuring the actual body surface temperature Tsk of the human body according to the temperature scan data;

The step of obtaining the metabolic rate M of the human body activity includes:

Determining human activity information and an ambient temperature value of the target area according to the temperature scan data;

Calculating a theoretical body surface temperature value according to the ambient temperature value;

The human activity metabolic rate M is determined according to the actual body surface temperature Tsk of the human body, the theoretical body surface temperature value of the human body, and the activity information of the human body.

Preferably, the step of acquiring the indoor temperature Ta comprises:

Detecting the outlet temperature Tc of the fan, and determining the indoor temperature Ta according to the outlet temperature Tc and a preset correlation between the indoor temperature Ta and the outlet temperature Tc;

Alternatively, the return air temperature Th of the fan is detected, and the indoor temperature Ta is determined according to the return air temperature Th and a preset correlation between the indoor temperature Ta and the return air temperature Th.

Preferably, the step of acquiring the rotational speed RPM of the wind turbine comprises:

The fan speed RPM is calculated according to a predetermined correlation between the air flow rate Va, the fan speed RPM, and the air flow rate Va.

Preferably, the step of acquiring the air turbulence intensity Tu comprises:

Determining a corresponding windshield F according to the windless mode of the current fan;

The air turbulence intensity Tu is determined according to a preset correlation between the windshield F, the air turbulence intensity Tu and the windshield F.

Preferably, the determining the target temperature of the current fan according to the body surface temperature Tsk, the human body activity metabolic rate M, the windlessness index PD, the fan rotational speed RPM, and the air turbulence intensity Tu The steps of Tbs include:

Determining an expected target temperature Tas of the current fan according to the body surface temperature Tsk, the human body metabolic rate M, the windlessness index PD, the fan rotational speed RPM, and the air turbulence intensity Tu;

Obtaining a set temperature Ts of the current fan;

The expected target temperature Tas is adjusted according to the air flow rate Va or the set temperature Ts to obtain a target temperature Tbs.

Preferably, the determining the target temperature Tbs of the current fan according to the actual body surface temperature Tsk, the human body activity metabolic rate M, the windlessness index PD, the air flow velocity Va, and the air turbulence intensity Tu After the steps, it also includes:

Obtaining a change amount of a compressor operating frequency according to a difference between a previous detected air temperature and a current air temperature, and a difference between the current indoor temperature Ta and the current target temperature Tbs;

The compressor operating frequency value is obtained according to the compressor operating frequency variation, and the compressor operation is controlled according to the compressor operating frequency.

In addition, in order to achieve the above object, the present invention also provides a windlessness control device, including: a memory, a processor, and a memory stored on the memory and operable on the processor Wind control program, where:

The step of implementing the windlessness control method according to any one of the above, when the windlessness control program is executed by the processor.

In addition, in order to achieve the above object, the present invention further provides a readable storage medium on which a windlessness control program is stored, and the windlessness control program is executed by a processor to implement the above The steps of the windless control method.

Further, in order to achieve the above object, the present invention also provides an air conditioner including the windless feeling control device as described above.

The windless sense control method and device, the readable storage medium and the air conditioner provided by the embodiments of the present invention respectively acquire the actual body surface temperature Tsk, the ambient temperature Ta, the air flow velocity Va, the air turbulence intensity Tu, and the human body active metabolism. The rate M is the wind-free index PD and the expected target temperature Tas is calculated. And determining the target temperature Tas according to the set temperature Ts or the air flow rate Va of the fan currently described, thereby determining the target temperature Tbs. According to the difference between the target temperature Tbs and the indoor temperature Ta, the frequency of the compressor or the fan speed is adjusted accordingly, and the relevant parameters according to the active state of the human body (the actual body surface temperature Tsk, the human body active metabolic rate M) and the vicinity of the human body are realized. The indoor temperature Ta indirectly controls the compressor frequency of the fan, and realizes that when the difference is not within the preset value range, by adjusting the compressor frequency, the indoor temperature corresponding to the fan also changes accordingly. Thereby, the difference is also dynamically changed, thereby realizing a process of more precise control of the windlessness of the fan by combining the active state of the human body, thereby providing a better windless experience.

DRAWINGS

1 is a schematic diagram showing the structure of an operating environment of a windless control device according to various embodiments of the present invention;

2 is a schematic flow chart of a first embodiment of a windlessness control method according to the present invention;

3 is a schematic diagram of a windlessness control process of the first embodiment of the windlessness control method of the present invention;

4 is a schematic flow chart of a second embodiment of a windlessness control method according to the present invention.

The implementation, functional features, and advantages of the present invention will be further described in conjunction with the embodiments.

Detailed ways

It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

For the existing air conditioner with the windless control function, it is necessary to further provide a windless control mode that is more precise and comfortable for the user's activity state. The embodiment of the invention provides a windlessness control method, including the following steps. : detecting whether there is a human body in the target area when the fan is turned on in the windless mode; if the target area exists in the human body, acquiring the actual body surface temperature Tsk, the human body active metabolic rate M and the indoor temperature Ta; acquiring the current fan The windlessness index PD corresponding to the windless mode, the air flow rate Va, the rotational speed RPM of the fan, and the air turbulence intensity Tu; according to the actual body surface temperature Tsk of the human body, the human body metabolic rate M, the absence Wind sense index PD, air flow rate Va, air turbulence intensity Tu, determining a target temperature Tbs of the current fan; adjusting a compressor frequency of the fan according to a difference between the indoor temperature Ta and the target temperature Tbs The rotational speed RPM of the fan.

The windlessness control device according to the embodiment of the present invention may specifically be a fan, a windless air conditioner, or a device having a micro control unit (MCU) or a central processing unit (CPU) in a fan or a windless air conditioner. /device. Understandably, the device implements control of the infrared sensing component/module for temperature field scanning of the spatial region.

As shown in FIG. 1 , FIG. 1 is a schematic structural diagram of an operating environment of a windless control device according to an embodiment of the present invention, which may specifically include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, and a memory 1005. Bus 1002. Among them, the communication bus 1002 is used to implement connection communication between these components. The user interface 1003 can include a display, an input unit such as a keyboard, and the optional user interface 1003 can also include a standard wired interface, a wireless interface. The network interface 1004 can optionally include a standard wired interface, a wireless interface (such as a WI-FI interface). The memory 1005 may be a high speed RAM memory or a non-volatile memory such as a disk memory. The memory 1005 can also optionally be a storage device independent of the aforementioned processor 1001.

Optionally, the windless control device may further include a camera, an RF (Radio Frequency) circuit, a sensor, an audio circuit, a WiFi module, and the like. Among them, sensors such as light sensors, motion sensors, and other sensors. It will be understood by those skilled in the art that the operating environment structure shown in FIG. 1 does not constitute a limitation to the windless control device, and may include more or less components than those illustrated, or may combine certain components, or different. Assembly of parts.

As shown in FIG. 1, the memory 1005 as a storage medium may include an operating system, a network communication module, a user interface module, and a windless control program.

In the operating environment structure shown in FIG. 1, the network interface 1004 is mainly used to connect to a server and perform data communication with the server; the user interface 1003 is mainly used to connect a client (user end) to perform data communication with the client; and the processor 1001 can be used to call the windless control program stored in the memory 1005 and perform the following operations:

Further, the processor 1001 can call the windless control program stored in the memory 1005, and further perform the following operations:

Detecting the outlet temperature Tc of the fan;

The indoor temperature Ta is determined according to the exhaust air temperature Tc and a preset correlation between the indoor temperature Ta and the outgoing air temperature Tc.

Obtaining a set temperature Ts of the current fan;

The compressor operating frequency value is obtained based on the compressor operating frequency variation, and the compressor operation is controlled based on the compressor operating frequency.

In addition, an embodiment of the present invention further provides an air conditioner including the windlessness control device as described above. Understandably, the air conditioner is a windless air conditioner with a windless control mode.

Referring to FIG. 2, a first embodiment of the present invention provides a windlessness control method, including the following steps:

Step S10: detecting whether a human body exists in the target area when the fan is turned on in the windless mode;

In the present embodiment, the windless feeling indicates that the user feels the least in the process of using the fan, that is, in the windless mode, the user is in a comfortable state. There are three types of windless modes corresponding to the fan, namely: no wind feeling mode, no wind feeling mode and no wind feeling mode. When the upper vertical air guiding strip of the fan is closed and the lower vertical air guiding strip is opened, When there is no wind feeling on the upper side; when the upper vertical air guiding strip of the fan is opened and the lower vertical air guiding strip is closed, the windless feeling is lower; when the upper vertical air guiding strip and the lower vertical air guiding strip of the fan are closed, It is completely windless. When the fan is turned on in the windless mode, it is detected whether there is a human body in the target area. The target area is a range area in which the human body activity state judging means can perform temperature scanning, and specifically may be a front area of the judging means. It should be noted that the above fan can be understood as a component of the air conditioner or a separate device or device.

Specifically, the temperature scan data of the target area is acquired to determine whether the target area has a human body; wherein the target area can be periodically scanned by an infrared sensor disposed on the apparatus, thereby acquiring temperature scan data of the target area. Based on the principle that the body surface temperature and the ambient temperature are significantly different, the temperature distribution of the target area is determined according to the temperature scan data of the target area, and whether there is a local area in the target area that is significantly different from the ambient background temperature; if present, Then it is determined that the human body exists.

Step S20, if the target area exists in the human body, acquiring the actual body surface temperature Tsk, the human body activity metabolic rate M, and the indoor temperature Ta;

When the human body exists, the human body activity information and the actual body surface temperature Tsk are further acquired, and the human body body surface temperature corresponding to the human body in a calm and inactive state (for example, sitting still) is calculated; wherein the human body activity information includes the human body at a certain time period. The average activity speed within the air can be determined by infrared detection of the change in the position of the human body heat source. According to the human activity information and the actual body surface temperature Tsk, the human body surface temperature, the body activity metabolic rate M is determined by means of a table lookup; wherein the query form is human activity information and the actual body surface temperature Tsk, human body theory A table of associations between body surface temperature and human activity metabolic rate M.

Further, the indoor temperature Ta refers specifically to the ambient temperature of the vicinity of the human body, and the implementation manner of obtaining the indoor temperature Ta includes:

Detecting an outlet temperature Tc of the fan, and determining the indoor temperature Ta according to the outlet temperature Tc and a preset correlation between the indoor temperature Ta and the outlet temperature Tc; wherein, the indoor temperature Ta and the outlet temperature The preset correlation of Tc is as shown in the following formula (1): Ta=m1*Tc+n1, and m1 and n1 are the relevant temperature parameters, respectively.

Alternatively, the return air temperature Th of the fan is detected, and the indoor temperature Ta is determined according to the return air temperature Th and a preset correlation between the indoor temperature Ta and the return air temperature Th. The preset correlation equation between the indoor temperature Ta and the return air temperature Th is expressed by the following formula (2): Ta=m1*Th+n1, and m1 and n1 are correlation temperature constants, respectively.

Step S30, obtaining a windlessness index PD, an air flow velocity Va, a rotational speed RPM of the wind turbine, and an air turbulence intensity Tu corresponding to the windless mode of the current fan;

When the fan is in different windless mode, the corresponding windlessness index PD is also different. The corresponding windlessness index PD is determined according to the windless mode selected by the user. The windless mode includes an upper windless mode, a lower windless mode, and a full windless mode, and the corresponding windlessness indexes are PD1, PD2, and PD3, respectively.

Further, for the fan that enters the windless mode for the first time after the power on, the corresponding air flow rate Va is a preset primary air flow rate, for example, 0.2 m/s.

Since the air flow rate Va is related to the air duct structure, the fan speed, and the like, for a particular air conditioner, it can be approximated that the air flow rate Va is only related to the fan speed RPM. Therefore, the fan speed RPM of the fan can be calculated according to the air flow rate Va. Specifically, the fan speed RPM is calculated according to the preset relationship between the air flow rate Va, the fan speed RPM and the air flow rate Va.

Further, the air turbulence intensity Tu represents the degree of change of air with time and space, and the step of acquiring the air turbulence intensity Tu includes:

According to the windless mode of the current fan, the corresponding windshield F is determined; and the air turbulence intensity Tu is determined according to the preset relationship between the windshield F, the air turbulence intensity Tu and the windshield F.

Among them, the correlation equation between the air turbulence intensity Tu and the windless mode corresponding to the windshield F is as shown in the following formula (3): Tu=a*F^2+b*F+c. When the selected windlessness is the upper windless mode, a=a1, b=b1, c=c1; when the selected windlessness is the windless mode, a=a2, b=b2, c= C2; when the selected windless mode is the full windless mode, a=a2, b=b2, c=c2.

Step S40, determining the target temperature Tbs of the current fan according to the actual body surface temperature Tsk, the human activity metabolic rate M, the windlessness index PD, the air flow velocity Va, and the air turbulence intensity Tu;

Specifically, there are: a correlation between a human body body surface temperature Tsk, an ambient temperature Ta, an air flow rate Va, an air turbulence intensity Tu, a human body metabolic rate M, and the windlessness index PD, as shown in the following formula (4). Show: PD=(Tsk-Ta)*[(Va-m1)^k]*[(m2+m3*Va*Tu)]*[1-m4*(M-70)], where m1\m2\m3 \m4\k are related constants. In this way, the sixth parameter can be determined by any five parameters of the six parameters of Tsk, Ta, Va, Tu, and MPD, so that the calculation of each parameter is more convenient. The expected target temperature Tas of the current fan is calculated based on the acquired Tsk, M, PD, Va, Tu, and Equation (4). And obtaining a set temperature Ts of the current fan, the set temperature Ts being a preset temperature. The expected target temperature Tas is adjusted according to the air flow rate Va or the set temperature Ts to obtain a target temperature Tbs.

In a specific implementation, the expected target temperature Tas is adjusted according to the air flow rate Va, and the step of obtaining the target temperature Tbs includes:

(1) When the air flow rate Va>0.3 m/s, if the target temperature Tas < 23 ° C is expected, the target temperature Tbs is determined to be 23 ° C; if the target temperature Tas is > 28 ° C, the target temperature Tbs is determined to be 28 ° C.

(2) When the air flow rate Va ≤ 0.3 m / s, if the target temperature Tas < 24 ° C is expected, the target temperature Tbs is determined to be 24 ° C; if the target temperature Tas is expected: 28 ° C < Tbs ≤ 29 ° C, the target temperature is determined The Tbs is 28 ° C; if the target temperature Tas > 29 ° C is expected, the target temperature Tbs is determined to be 29 ° C.

In another specific implementation, the expected target temperature Tas is adjusted according to the set temperature Ts, and the step of obtaining the target temperature Tbs includes:

(1) When the set temperature Ts < 24 ° C, if the target temperature Tas < 23 ° C is expected, the target temperature Tbs is determined to be 23 ° C; if the target temperature Tas is > 28 ° C, the target temperature Tbs is determined to be 28 ° C.

(2) When the set temperature is 24 ° C ≤ Ts ≤ 28 ° C, if the target temperature Tas < 24 ° C is expected, the target temperature Tbs is determined to be 24 ° C; if the target temperature Tas is expected: 28 ° C < Tbs ≤ 29 ° C, then it is determined The target temperature Tbs is 28 ° C;

(3) When the set temperature Ts>28° C., if the target temperature Tas<24° C. is expected, the target temperature Tbs is determined to be 24° C.; if the target temperature Tas>29° C. is expected, the target temperature Tbs is determined to be 29° C.

Step S50, adjusting a compressor frequency of the fan and a rotation speed RPM of the fan according to a difference between the indoor temperature Ta and the target temperature Tbs.

In this embodiment, the fan speed and the compressor frequency of the fan can be controlled by the difference between the indoor temperature Ta and the target temperature Tbs; specifically, when the target temperature Tbs is determined, the target temperature Tbs and the current indoor temperature are calculated. The difference between the Ta and the preset value range is the preset value range; the difference between the target temperature Tbs and the current indoor temperature Ta is in the preset value range. When it is inside, it can be expressed as: (T _bs -T _a )∈[-D,D], where [-D,D] is the preset value range, D is a positive number, Ta is the indoor temperature, and Tbs is Target temperature. In addition, the difference between the target temperature Tbs and the current indoor temperature Ta is not within the preset value range, and may be specifically divided into two cases, where the difference between the target temperature and the current indoor temperature Ta is greater than the preset value range. The right limit can be expressed as T _bs -T _a >D; and the difference between the target temperature and the current indoor temperature Ta is less than the left limit of the preset range of values, which can be expressed as T _bs -T _a <-D. For example, if the value of D is 0.5, the preset value range is [-0.5, 0.5]. When the difference between the target temperature and the current indoor temperature Ta is within the preset value range, it can be expressed as :(T _bs -T _a )∈[-0.5,0.5]; when the difference between the target temperature and the current indoor temperature Ta is greater than the right limit of the preset range, it can be expressed as T _bs -T _a >0.5; when the difference between the target temperature Tbs and the current indoor temperature Ta is less than the left limit of the preset value range, it can be expressed as T _bs -T _a <-0.5;

When the fan is turned on without wind, at this time, the wind speed Va corresponding to the fan is a preset primary wind speed, and the fan operates according to the initial compressor frequency while the fan is turned on without wind feeling. Obtaining a first compressor frequency of the fan when a difference between the target temperature Tbs and the current indoor temperature Ta is within the preset value range, wherein the first compressor frequency indicates that the difference is at the preset When the difference between the target temperature Tbs and the current indoor temperature Ta is within the preset value range, the fan is operated according to the first compressor frequency until the fan exits without Wind feeling

Further, when the difference between the target temperature Tbs and the current indoor temperature Ta is not within the preset value range, the second compressor frequency of the fan is calculated, wherein the second compressor frequency indicates that the difference is not The frequency of the current compressor when the preset value is within the range;

Wherein, when the difference between the target temperature Tbs and the current indoor temperature Ta is greater than the right limit of the preset value range, that is, T _bs -T _a >0.5, the compressor decreases the preset frequency value each time; The frequency of the compressor causes the outlet temperature Tc of the fan to change accordingly, and the indoor temperature Ta corresponding to the fan also changes; if the preset frequency value is 1 Hz, the compressor is lowered by 1 Hz each time. The value after the compressor frequency is lowered is the second compressor frequency, wherein the minimum value of the second compressor frequency is set to 20 Hz.

When the difference between the target temperature Tbs and the current indoor temperature Ta is greater than the right limit of the preset value range, and the second compressor frequency is greater than the minimum value, the preset time is acquired, according to the preset time Operating the fan at a second compressor frequency;

If the difference between the target temperature and the current indoor temperature Ta is greater than the right limit of the preset value range, and the second compressor frequency has decreased to a minimum value, the wind speed corresponding to the wind turbine (ie, the air flow rate Va) is acquired. . When the second compressor frequency is the minimum compressor frequency, the corresponding fan speed RPM is calculated by the obtained air flow rate Va, and the fan is controlled to operate according to the fan speed RPM, thereby realizing the control of the fan; when the air flow rate Va is changed At the time, the control formula of the air flow rate Va is: V _a (n+1)=V _a (n)-C, where Va(n+1) represents the expected air flow rate after the air flow rate Va is changed, Va(n) Indicates the air flow rate before the air flow rate Va changes, C represents a preset constant value; when Va(n+1) is acquired, the fan is currently operating at the lowest compressor frequency or according to the fan speed corresponding to Va(n) State; when Va(n+1) is calculated, the preset time is obtained, and the fan speed corresponding to the fan is calculated according to Va(n+1); when the fan is based on the minimum compressor frequency or within a preset time According to the fan speed running end, the fan runs according to the fan speed corresponding to the second wind speed in the preset time, and the second compressor frequency is the lowest compressor frequency;

Further, when the difference between the target temperature Tbs and the current indoor temperature Ta is less than the left limit of the preset value range, that is, T _bs −T _a <−0.5, the compressor increases the preset frequency value each time due to the change. The frequency of the compressor causes the outlet temperature Tc of the fan to change accordingly, and the indoor temperature Ta corresponding to the fan also changes; if the preset frequency value is 1 Hz, the compressor is improved each time. 1 Hz, the value of the compressor frequency is the second compressor frequency; specifically, when the difference between the target temperature Tbs and the current indoor temperature Ta is less than the left limit of the preset value range, the pre-acquisition is obtained. The time is set to operate the fan according to the second compressor frequency within a preset time.

The implementation flow chart of each step of this embodiment is shown in FIG. 3.

In the present embodiment, the actual body surface temperature Tsk, the ambient temperature Ta, the air flow rate Va, the air turbulence intensity Tu, the human body metabolic rate M, and the windlessness index PD are respectively acquired, and the expected target temperature Tas is calculated. And determining the target temperature Tas according to the set temperature Ts or the air flow rate Va of the fan currently described, thereby determining the target temperature Tbs. According to the difference between the target temperature Tbs and the indoor temperature Ta, the frequency of the compressor or the fan speed is adjusted accordingly, and the relevant parameters according to the active state of the human body (the actual body surface temperature Tsk, the human body active metabolic rate M) and the vicinity of the human body are realized. The indoor temperature Ta indirectly controls the compressor frequency of the fan, and realizes that when the difference is not within the preset value range, by adjusting the compressor frequency, the indoor temperature corresponding to the fan also changes accordingly. Thereby, the difference is also dynamically changed, thereby realizing a process of more precise control of the windlessness of the fan by combining the active state of the human body, thereby providing a better windless experience.

Further, as shown in FIG. 4, the current location is determined according to the actual body surface temperature Tsk of the human body, the human body metabolic rate M, the windlessness index PD, the air flow velocity Va, and the air turbulence intensity Tu. After the step of describing the target temperature Tbs of the fan, the method further includes:

Step S60, obtaining a compressor operating frequency change amount according to a difference between the previously detected air outlet temperature and the current air outlet temperature, and a difference between the current indoor temperature Ta and the current target temperature Tbs;

Step S70, obtaining a compressor operating frequency value according to the compressor operating frequency variation, and controlling compressor operation according to the compressor operating frequency.

After obtaining the target temperature Tbs, the required change amount of the compressor operating frequency is obtained by combining the detected change of the fan outlet temperature Tc value and the change of the indoor temperature Ta and the target temperature Tbs, and the compressor is calculated according to the change amount. The frequency value that needs to be operated in the next step. Compared with the previous changes in the operating temperature of the compressor based on the change of the set temperature and the indoor temperature, the scheme can better match the change of the indoor ambient temperature, thereby controlling the obtained after the compressor is operated. The indoor ambient temperature changes more quickly following the corrected set temperature change, thereby further improving the user's comfort requirements.

The specific control rules are as follows:

Real-time detection of the fan outlet temperature Tc value, according to the difference between the previously detected outlet air temperature and the current outlet temperature, and the difference between the current indoor temperature Ta and the current target temperature Tbs, the compressor operating frequency change is obtained. The quantity, the obtaining process can be obtained by formula calculation or by using the look-up table method. For example, in the cooling mode, a part of the frequency variation ΔF (Hz) of the compressor is obtained by a look-up method as follows:

In the above table, Ta(n)-Tbs(n) represents the difference (in °C) between the current indoor temperature Ta and the determined target temperature Tbs, and Tc(n-1)-Tc(n) represents the previous detected wind. The difference between the temperature and the current outlet temperature d (in °C), the difference between the two corresponds to different compressor frequency change Δf, compared with the previous compressor frequency control based only on the indoor temperature and the set temperature value The increase of the indoor temperature before and after the increase in the frequency of the compressor is comprehensively obtained, and the obtained compressor frequency adjustment amount is more accurate.

According to the compressor frequency variation Δf, the frequency f value that the compressor needs to run next is obtained, which can be obtained by simple calculation such as f(n)=f(n-1)+Δf, where F(n) is the next compressor. The running frequency value, F(n-1) is the current compressor operating frequency value, or can be calculated by combining the before and after changes of the compressor operating frequency, such as f(n)=Δf×K+min(f(n- 2), f(n-1)), where f(n-2) is the operating frequency value of the previous compressor, and K is the correction factor of Δf, which needs to be determined by preliminary experiments. This scheme calculates the operating frequency of the compressor. Taking into account the changes before and after, the compressor frequency obtained is more accurate.

In addition, an embodiment of the present invention further provides a readable storage medium, where the readable storage medium stores a windlessness control program, and when the windlessness control program is executed by the processor, the following operations are implemented:

Further, when the windlessness control program is executed by the processor, the following operations are also implemented:

Obtaining a set temperature Ts of the current fan;

It is to be understood that the term "comprises", "comprising", or any other variants thereof, is intended to encompass a non-exclusive inclusion, such that a process, method, article, or It also includes other elements that are not explicitly listed, or elements that are inherent to such a process, method, item, or system. An element defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in a process, method, article, or system that includes the element, without further limitation.

The serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments.

Through the description of the above embodiments, those skilled in the art can clearly understand that the foregoing embodiment method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is better. Implementation. Based on such understanding, portions of the technical solution of the present invention that contribute substantially or to the prior art may be embodied in the form of a software product stored in a storage medium (such as a ROM/RAM as described above). , a disk, an optical disk, including a number of instructions for causing a terminal device to perform the method described in various embodiments of the present invention.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the present invention and the drawings are directly or indirectly applied to other related technical fields. The same is included in the scope of patent protection of the present invention.

Claims

A windlessness control method, characterized in that the windlessness control method comprises the following steps:

When the fan is turned on in the windless mode, it is detected whether there is a human body in the target area;

If the target area exists in the human body, obtaining the actual body surface temperature Tsk, the human body activity metabolic rate M, and the indoor temperature Ta;

Obtaining a windlessness index PD corresponding to the windless mode of the current fan, an air flow rate Va, a speed RPM of the fan, and an air turbulence intensity Tu;

Determining a target temperature Tbs of the current fan according to the actual body surface temperature Tsk, the human activity metabolic rate M, the windlessness index PD, the air flow velocity Va, and the air turbulence intensity Tu;

The compressor frequency of the fan and the rotational speed RPM of the fan are adjusted according to a difference between the indoor temperature Ta and the target temperature Tbs.
The windlessness control method according to claim 1, wherein the step of detecting whether a human body is present in the target area when the fan is turned on in the windless mode comprises:

When the fan is turned on in the windless mode, when the fan is turned on in the windless mode, the target area is scanned by the infrared sensor to obtain temperature scan data of the target area;

Determining whether the target area has a human body based on the temperature scan data.
The windlessness control method according to claim 2, wherein the step of acquiring the actual body surface temperature Tsk of the human body comprises:

Measuring the actual body surface temperature Tsk of the human body according to the temperature scan data;

The step of obtaining the metabolic rate M of the human body activity includes:

Determining human activity information and an ambient temperature value of the target area according to the temperature scan data;

Calculating a theoretical body surface temperature value according to the ambient temperature value;

The human activity metabolic rate M is determined according to the actual body surface temperature Tsk of the human body, the theoretical body surface temperature value of the human body, and the activity information of the human body.
The windlessness control method according to claim 1, wherein the step of acquiring the indoor temperature Ta comprises:

Detecting the outlet temperature Tc of the fan, and determining the indoor temperature Ta according to the outlet temperature Tc and a preset correlation between the indoor temperature Ta and the outlet temperature Tc;

Alternatively, the return air temperature Th of the fan is detected, and the indoor temperature Ta is determined according to the return air temperature Th and a preset correlation between the indoor temperature Ta and the return air temperature Th.
The windlessness control method according to claim 1, wherein the step of acquiring the air turbulence intensity Tu comprises:

Determining a corresponding windshield F according to the windless mode of the current fan;

The air turbulence intensity Tu is determined according to a preset correlation between the windshield F, the air turbulence intensity Tu and the windshield F.
The windlessness control method according to claim 1, wherein said said body surface temperature Tsk, said human body activity metabolic rate M, said windlessness index PD, said fan rotational speed RPM, air The turbulence intensity Tu, the step of determining the target temperature Tbs of the current fan includes:

Determining an expected target temperature Tas of the current fan according to the body surface temperature Tsk, the human body metabolic rate M, the windlessness index PD, the fan rotational speed RPM, and the air turbulence intensity Tu;

Obtaining a set temperature Ts of the current fan;

The expected target temperature Tas is adjusted according to the air flow rate Va or the set temperature Ts to obtain a target temperature Tbs.
The windlessness control method according to claim 1, wherein the human body actual body surface temperature Tsk, the human body activity metabolic rate M, the windlessness index PD, the air flow rate Va, and the air turbulence The flow intensity Tu, after determining the current target temperature Tbs of the fan, further includes:

Obtaining a change amount of a compressor operating frequency according to a difference between a previous detected air temperature and a current air temperature, and a difference between the current indoor temperature Ta and the current target temperature Tbs;

The compressor operating frequency value is obtained according to the compressor operating frequency variation, and the compressor operation is controlled according to the compressor operating frequency.
A windlessness control device, comprising: a memory, a processor, and a windless control program stored on the memory and operable on the processor, wherein:

The step of implementing the windlessness control method according to claim 1 when the windlessness control program is executed by the processor.
A windlessness control device, comprising: a memory, a processor, and a windless control program stored on the memory and operable on the processor, wherein:

The step of implementing the windlessness control method according to claim 2 when the windlessness control program is executed by the processor.
A windlessness control device, comprising: a memory, a processor, and a windless control program stored on the memory and operable on the processor, wherein:

The step of implementing the windlessness control method according to claim 3 when the windlessness control program is executed by the processor.
A windlessness control device, comprising: a memory, a processor, and a windless control program stored on the memory and operable on the processor, wherein:

The step of implementing the windlessness control method according to claim 4 when the windlessness control program is executed by the processor.
A windlessness control device, comprising: a memory, a processor, and a windless control program stored on the memory and operable on the processor, wherein:

The step of implementing the windlessness control method according to claim 5 when the windlessness control program is executed by the processor.
A windlessness control device, comprising: a memory, a processor, and a windless control program stored on the memory and operable on the processor, wherein:

The step of implementing the windlessness control method according to claim 6 when the windlessness control program is executed by the processor.
A readable storage medium, wherein the readable storage medium stores a windlessness control program, and the windlessness control program is executed by a processor to implement the windless sense control according to claim 1. The steps of the method.
A readable storage medium, wherein the readable storage medium stores a windlessness control program, and the windlessness control program is executed by a processor to implement the windless sense control according to claim 2. The steps of the method.
A readable storage medium, characterized in that the readable storage medium stores a windlessness control program, and the windlessness control program is executed by a processor to implement the windless sense control according to claim 3. The steps of the method.
A readable storage medium, characterized in that the readable storage medium stores a windlessness control program, and the windlessness control program is executed by a processor to implement the windless sense control according to claim 4. The steps of the method.
A readable storage medium, wherein the readable storage medium stores a windlessness control program, and the windlessness control program is executed by a processor to implement the windless sense control according to claim 5. The steps of the method.
A readable storage medium, wherein the readable storage medium stores a windlessness control program, and the windlessness control program is executed by a processor to implement the windless sense control according to claim 6. The steps of the method.
An air conditioner characterized by comprising the windlessness control device according to claim 8.