[0053] Further, refer to figure 2 , figure 2 It is a schematic flowchart of an air conditioner control method according to another embodiment of the present invention. Based on the first embodiment of the air conditioner control method of the present invention, in this embodiment, after the above step S30, the method further includes:
[0054] In step S301, when the air conditioner operates in the cooling mode, the ambient temperature value is detected, and the cooling and heating sensation state value is corrected according to the temperature value.
[0055] After the human body's heat and cold sensation state value is calculated according to the heat dissipation, if the air conditioner is running in the cooling mode, at this time, the cold and heat sensation state value can be further corrected according to the detected ambient temperature value.
[0056] The specific adjustment rules are as follows:
[0057] Obtain the ambient temperature value T1 detected by the air conditioner, and correct the thermal and cold state value M according to the value of the ambient temperature value T1. For example, it can be corrected by a formula, such as:
[0058] M=aT1 3 +b T1 2 +c T1+d
[0059] Among them, a, b, c, and d are different calculation coefficient values.
[0060] Or it can also be divided into different temperature intervals according to the ambient temperature value T1, and the cold and heat sensation state value M can be modified differently according to different temperature intervals, such as:
[0061] When T1≤a1, M=M+b0
[0062] a1
[0063] a2
[0064] T1> For a3, M=M+b3
[0065] Where a1
[0066] When T1≤21℃, M=M-2
[0067] 18℃
[0068] 21℃
[0069] T1> At 25℃, M=M+1
[0070] It can be seen from the above modified calculation formula that when the ambient temperature value T1 is in a cold state (18℃ 25℃), the correction to the value M of the heat and cold sensation is large; when the ambient temperature value T1 is in a relatively comfortable state (21℃
[0071] Furthermore, the M value of the thermal sensation state value can limit the upper and lower limits, such as:
[0072] When M≤-3, take M=-3
[0073] When M≥3, take M=3
[0074] In the embodiment of the present invention, by detecting the environmental temperature value when the air conditioner is running in the cooling mode, and correcting the cooling and heating sensation state value according to the environmental temperature value, the user’s current cooling and heating sensation reflected by the cooling and heating sensation state value is further ensured The status is closer to the user's current hot and cold feeling, making the subsequent control of the air conditioner to adjust the operating parameters according to the hot and cold feeling state value more accurately, and further improving the user's comfort experience.
[0075] Further, refer to image 3 , image 3 It is a schematic flowchart of the third embodiment of the air conditioning control method of the present invention. Based on the above first embodiment of the air conditioning control method of the present invention, in this embodiment, after the above step S30, the method further includes:
[0076] S302: When the air conditioner is operating in the heating mode, detect the ambient temperature value and the operating wind speed value of the air conditioner, obtain the air temperature value near the human body according to the ambient temperature value and the operating wind speed value, and correct it according to the air temperature value near the human body The value of the heat and cold sensation.
[0077] When the air conditioner is running in the heating mode, the human body’s perception of the hot air blowing from the air conditioner is different from the cold air in the cooling state. In addition to being related to the ambient temperature, it is also related to the speed of the hot air blowing from the air conditioner. It is necessary to combine the ambient temperature value and the operating wind speed value of the air conditioner to correct the heat and cold state. That is, it is necessary to first obtain the air temperature value near the human body according to the ambient temperature value and the operating wind speed value of the air conditioner, and then according to the vicinity of the human body The air temperature value is corrected to the value of the heat and cold sensation.
[0078] According to the ambient temperature and the operating wind speed of the air conditioner, the air temperature near the human body is obtained as follows:
[0079] Obtain the ambient temperature value T1 detected by the air conditioner, divide it into different wind speed ranges according to the operating wind speed value of the air conditioner, and calculate the T1 value according to different wind speed ranges to get the air temperature value near the human body, because the human body affects the heating mode The hot air experience under cooling mode is more sensitive than the cold air experience in cooling mode, and the experience of different sizes of hot air speed is obviously different, so it is not suitable to adopt a fixed calculation rule to obtain the air temperature value near the human body according to the ambient temperature value T1. Different calculations are made according to different wind speed intervals. For example, according to the operating wind speed value of the air conditioner, it can be divided into 100 levels according to the wind speed from small to large, and the 100 levels are divided into 10 sections, and each section adopts different calculation rules:
[0080] Wind speed range
[0081] Among them, Ta is the air temperature value near the human body, T1 is the ambient temperature value, and c1, c2, c3, c4, c5, and c6 are positive values and not equal to each other.
[0082] According to experiments, when the wind speed is higher, the difference between the air temperature near the human body and the ambient temperature is smaller, and when the wind speed is lower, the difference between the air temperature near the human body and the ambient temperature is greater, that is, the above c1, c2, c3, c4, c5 The size relationship of c6 is: c1> c2> c3> c4> c5> c6, for example, the above table lists the specific values of c1, c2, c3, c4, c5, and c6 as follows:
[0083] Wind speed range
[0084] After the air temperature value near the human body is obtained in the heating mode, when the human body's hot and cold sensation state value M is corrected according to the air temperature value near the human body, it can be divided into several different temperature ranges according to the air temperature value near the human body. According to different temperature ranges, the state value M of the cold and heat sensation is corrected. For example, the specific range of the value of M is limited by different temperature ranges to correct M:
[0085] When T1≤c1, M≤d1
[0086] c1
[0087] c2
[0088] T1> When a3, M> d3
[0089] Where c1
[0090] When T1≤17℃, M≤-1
[0091] 17℃
[0092] 21℃
[0093] T1> 26 o'clock, M> 1
[0094] Further, the M value of the thermal sensation state value can limit the upper and lower limits, such as:
[0095] When M≤-3, take M=-3
[0096] When M≥3, take M=3
[0097] In this embodiment, after obtaining the human body's heat and cold sensation state value according to the heat dissipation of the human body, when the air conditioner is running in the heating mode, the room ambient temperature value and the air conditioner operating wind speed value are detected, based on the ambient temperature value and the operating wind speed value Obtain the air temperature value near the human body, and finally modify the human body's cold and heat sensation state value according to the air temperature value near the human body, so that the cold and heat sensation state value obtained in the heating mode is closer to the human body's cold and heat sensation , It will be more accurate to control the air conditioner according to the value of the heat and cold sensation in the follow-up, and the user's comfort experience will be improved.
[0098] Hereinafter, an air conditioner according to another embodiment of the present invention will be described with reference to the accompanying drawings.
[0099] Reference Figure 4 , Figure 4 It is a schematic diagram of functional modules of an embodiment of the air conditioner of the present invention. In this embodiment, the air conditioner includes:
[0100] The temperature detection module 10 obtains the radiation temperature value in the room and the temperature value of the human body surface;
[0101] The heat and cold sensation acquisition module 20 is configured to obtain the heat dissipation of the human body according to the difference between the temperature of the human body surface and the radiation temperature value in the room, and further obtain the heat and cold sensation state value of the human body according to the heat dissipation;
[0102] The control module 30 controls the operation of the air conditioner according to the heat and cold state.
[0103] According to the common sense of thermodynamics, the surface temperature of the human body is the temperature value of the human body surface, and the radiation temperature is the average temperature of the surrounding surface of the environment on the human body. Taking a person in a room as an example, the radiation temperature is the surrounding environment in the room. The average temperature value of the wall, window, etc. on the human body. These two temperature values can be measured and read by a sensor with the function of measuring thermal images, such as Panasonic’s array infrared sensor module. The infrared sensor scans the human body or the surrounding environment. When you get a thermal image, such as Figure 5 As shown, the thermal image can obtain the temperature value of each small area or one of the pixels through the array arrangement, such as Figure 5 The color shade of each pixel shown indicates the difference in temperature value, and the specific temperature value of each pixel can be read. When the thermal infrared sensor scans the human body, it will also obtain a thermal image of a certain area, because the temperature of various places on the human body surface is different, so the corresponding thermal image is not the same, so the temperature of the human body surface can be measured by The temperature points of all pixels of the human body corresponding to the thermal image are obtained by taking the average value, and the average value represents the average temperature value of the human body, that is, the average temperature value of the human body surface represents the temperature value of the human body surface. The measurement of the radiant temperature in the room is to scan the thermal image formed by the surrounding areas in the room such as walls, ceilings, and windows through an infrared sensor, remove the thermal image part where the human body is located, and read the temperature value of each pixel of the thermal image of the remaining part. Take the average value to obtain the radiation temperature value in the room, that is, the average radiation temperature value in the room represents the radiation temperature value in the room.
[0104] According to the first law of thermodynamics, the amount of heat generated by the human body is always equal to the amount of heat consumed by the human body. Therefore, the amount of heat consumed by the human body can be obtained by measuring the amount of heat consumed by the human body. The amount of heat consumed by the human body can be calculated by the following formula:
[0105] H=Φ(Tcl-Ta)
[0106] Among them, H is the heat dissipation of the human body, Tcl is the temperature value of the human body surface, Ta is the radiation temperature value, and Φ is the additional calculation coefficient. These calculation coefficients are some general calculation coefficients in the field of human thermal comfort research, such as the effective consideration of the surrounding environment Radiation area coefficient f_eff, body area coefficient f_cl, Φ=f_eff*f_cl, at this time H=f_eff*f_cl*(Tcl-Ta), by calculating the difference between the human body surface temperature value Tcl and the radiation temperature value Ta and then combining Calculate the coefficient Φ, and get the heat dissipation H of the human body.
[0107] Of course, according to the mapping relationship between the temperature value Tcl of the human body surface, the radiation temperature value Ta and the heat dissipation of the human body, the temperature value Tcl and the temperature value Ta can be pre-selected, and the human body corresponding to the temperature value Tcl and the temperature value Ta can be set Heat dissipation, forming a mapping table. When the temperature value Tcl and the radiation temperature value Ta of the human body surface are obtained, the corresponding heat dissipation amount of the human body can be obtained by looking up the table.
[0108] In step S30, the cold and hot sensation state of the human body is obtained according to the heat dissipation of the human body.
[0109] The human body's hot and cold sensation can be reflected by specific different values, as shown in the following table:
[0110] Cold and hot state value
[0111] The above table is divided into 8 sections by the size of the state value M of the cold and hot sensation, which respectively represent the different thermal comfort feelings of the human body.
