Air conditioner control method, air conditioner, and computer-readable storage medium

Abstract

The present invention discloses a control method for an air conditioner, an air conditioner, and a computer-readable storage medium. The method comprises: upon detecting a human body signal in a room where the air conditioner is operating, obtaining the number of people based on the human body signal; determining a start time for the air conditioner's fresh air system based on the number of people, the room area, and a preset relationship between the number of people, the room area, and the start time; and starting a timer. When the start time is reached, the fresh air system is turned on. Embodiments of the present invention automatically turn on the fresh air system without requiring additional detection devices, thereby reducing equipment costs. Furthermore, the start time is determined based on the number of people and the room area to meet carbon dioxide concentration requirements, thereby improving the accuracy of the start time and ensuring timely ventilation without adding unnecessary cooling or heating loads.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a control method for an air conditioner, an air conditioner, and a computer-readable storage medium. Background Art

[0002] When the air conditioner is on, the room must be airtight. If it's on for extended periods, the indoor air quality can deteriorate, and in severe cases, people inside may suffer from hypoxia. Therefore, air conditioners with fresh air functions are more popular among users.

[0003] During use, it was found that there are the following problems with turning on or off household fresh air air conditioners or fresh air fans: manual turning on or off is not convenient to operate; automatic turning on or off requires an additional carbon dioxide detection device, which increases costs.

[0004] It should be noted that the above content is only used to assist in understanding the technical problem solved by the present invention, and does not mean that the above content is admitted as prior art. Summary of the Invention

[0005] The main purpose of the present invention is to provide a control method for an air conditioner, an air conditioner and a computer-readable storage medium, which are intended to enable a fresh air system to be automatically started or shut down without incurring additional costs.

[0006] To achieve the above object, the present invention provides a method for controlling an air conditioner, wherein the air conditioner includes a fresh air system, and the method for controlling the air conditioner includes:

[0007] When a human body signal is detected in the room where the air conditioner is operating, obtaining the number of people according to the human body signal;

[0008] Determining the start time of the fresh air system of the air conditioner according to the number of people, the area of ​​the room, and the relationship between the number of people, the area, and the start time;

[0009] Start timing, and when the start time is reached, start the fresh air system.

[0010] Optionally, the step of determining the start time of the fresh air system of the air conditioner according to the number of people, the area of ​​the room, and the preset relationship between the number of people, the area, and the start time includes:

[0011] Determine the product of the ratio of the room area to the number of people and a preset compensation coefficient;

[0012] Based on the preset opening time of the fresh air system being less than or equal to the product, the opening time of the fresh air system is obtained.

[0013] Optionally, before the step of determining the product of the ratio of the room area to the number of people and a preset compensation coefficient, the step further includes:

[0014] Determine the status of the person;

[0015] The preset compensation coefficient is determined according to the state of the person, wherein the size of the preset compensation coefficient when the person is in motion is different from the size of the preset compensation coefficient when the person is in a stationary state.

[0016] Optionally, after the step of starting the fresh air system, the method further includes:

[0017] Obtaining the running time, and shutting down the fresh air system after running the running time;

[0018] Alternatively, when no human body signal is detected in the room, the fresh air system is turned off.

[0019] Optionally, the step of obtaining the running time includes:

[0020] Obtaining the fresh air intake volume of the fresh air system per unit time;

[0021] The time required to replace the air in the room with fresh air is determined according to the fresh air intake volume and the volume of the room, and the time is used as the operating time.

[0022] Optionally, the air conditioner is provided with a radar sensor, and the method further comprises:

[0023] receiving a first radar signal and a second radar signal sent by the radar sensor, where the first radar signal and the second radar signal are scanned by the radar sensor at different times;

[0024] comparing the first radar signal and the second radar signal;

[0025] When the first radar signal and the second radar signal are not completely the same, it is determined that the human body signal is detected.

[0026] Optionally, the step of determining the number of people according to the human body signal includes:

[0027] determining a target area with different signals according to the first radar signal and the second radar signal;

[0028] The number of personnel is determined according to the number of the target areas.

[0029] Optionally, the step of starting the fresh air system when the start time is reached includes:

[0030] Start timing, and when the start time is reached, detect human body signals in the room;

[0031] When the human body signal is detected, turning on the fresh air system;

[0032] When the human body signal is not detected, the fresh air system is kept in a closed state.

[0033] In order to achieve the above-mentioned purpose, the present invention also provides an air conditioner, which includes a memory, a processor, and a control program stored in the memory and runnable on the processor. When the control program is executed by the processor, the steps of the air conditioner control method described above are implemented.

[0034] The present invention also provides a computer-readable storage medium storing a control program. When the control program is executed by a processor, the steps of the air conditioner control method described above are implemented.

[0035] The air conditioner control method, air conditioner, and computer-readable storage medium provided by the present invention detect a human body signal in a room where the air conditioner is operating, obtain the number of people based on the human body signal; determine the start-up time of the air conditioner's fresh air system based on the number of people, the area of ​​the room, and a preset relationship between the number of people, the area, and the start-up time; and start a timer. When the start-up time is reached, the fresh air system is turned on. The air conditioner's own detection device is used to detect the number of people entering the room and the room area to determine the start-up time of the fresh air system, thereby automatically turning on the fresh air system. This eliminates the need for manual activation by the user and the addition of additional detection devices, reducing equipment costs. Furthermore, the start-up time is determined based on the number of people and the room area to meet carbon dioxide concentration requirements, improving the accuracy of the start-up time and ensuring timely ventilation without adding unnecessary cooling or heating loads. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 Schematic diagram of the hardware architecture of the air conditioner involved in the embodiment of the present invention;

[0037] Figure 2 1 is a flow chart of a first embodiment of a method for controlling an air conditioner according to the present invention;

[0038] Figure 3 Schematic diagram of a radar sensor in an air conditioner according to the present invention detecting a radar signal;

[0039] Figure 4 This is a detailed flow chart of an embodiment of step S20 in the second embodiment of the air conditioner control method of the present invention;

[0040] Figure 5This is a schematic diagram of another embodiment of a detailed flow chart of step S20 in the third embodiment of the air conditioner control method of the present invention;

[0041] Figure 6 FIG. 4 is a flow chart of a fourth embodiment of a method for controlling an air conditioner according to the present invention.

[0042] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0043] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0044] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Instead, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0045] Since the airtightness of the room needs to be maintained during the operation of the air conditioner, the indoor air quality will be poor after being turned on for a long time, and in severe cases, it will cause hypoxia for people indoors. The target air conditioner adds a fresh air function. During the use of the air conditioner with the fresh air function, it was found that the problem of turning on or off the household fresh air air conditioner or fresh air fan needs to be solved. For example, the manual opening or closing method is not convenient to operate, which brings cumbersome operation problems to the user, and the user cannot know when to turn it on for the best effect. For example, the automatic opening or closing method requires an additional carbon dioxide detection device, which increases the cost. In addition, the detection device has poor stability, high failure rate, and short service life. It needs frequent repair and replacement, which further increases the cost of use.

[0046] Based on this, this embodiment provides a control method for an air conditioner, which uses a detection device that the air conditioner originally needs to be equipped with (such as a human body signal detection device) to realize automatic on and off of the fresh air function of the air conditioner without the need for an additional carbon dioxide detection device. It is turned on when fresh air is needed indoors and turned off when fresh air is not needed, thereby avoiding the loss of cooling or heat and causing energy waste.

[0047] As an implementation method, the hardware environment architecture involved in the air conditioner control method can be as follows: Figure 1 shown.

[0048] Specifically, the hardware architecture involved in the control method of the air conditioner includes a terminal, which can be an air conditioner or a control terminal of the air conditioner, such as a central large screen, a mobile terminal, or an intelligent robot.

[0049] As an implementation, the control terminal includes: a processor 101, such as a CPU, a memory 102, and a communication bus 103. The communication bus 103 is used to implement connection and communication between these components. The processor 102 is used to call an application to execute a control process.

[0050] The memory 102 may be a high-speed RAM memory or a non-volatile memory, such as a disk memory.

[0051] It is understood that, in one embodiment, the control program for implementing the control process of the air conditioner is stored in the memory 102 of the controller, and when the processor 101 calls the control program from the memory 102, it performs the following operations:

[0052] When a human body signal is detected in the room where the air conditioner is operating, obtaining the number of people according to the human body signal;

[0053] Determining the start time of the fresh air system of the air conditioner according to the number of people, the area of ​​the room, and the relationship between the number of people, the area, and the start time;

[0054] Start timing, and when the start time is reached, start the fresh air system.

[0055] Alternatively, in another embodiment, a control program for implementing the control process of the air conditioner is stored in a computer-readable storage medium. When the storage medium is applied to a computer, the processor 101 of the computer can call the control program from the storage medium and perform the following operations:

[0056] When a human body signal is detected in the room where the air conditioner is operating, obtaining the number of people according to the human body signal;

[0057] Determining the start time of the fresh air system of the air conditioner according to the number of people, the area of ​​the room, and the relationship between the number of people, the area, and the start time;

[0058] Start timing, and when the start time is reached, start the fresh air system.

[0059] Based on the hardware architecture of the air conditioner described above, various embodiments of a method for controlling the air conditioner are described below.

[0060] First embodiment

[0061] Please refer to Figure 2 The air conditioner control method proposed in this embodiment includes the following steps:

[0062] Step S10, when a human body signal is detected in the room where the air conditioner is operating, obtaining the number of people according to the human body signal;

[0063] Step S20, determining the start time of the fresh air system of the air conditioner according to the number of people, the area of ​​the room, and the preset relationship between the number of people, the area, and the start time;

[0064] Step S30, start timing, and when the start time is reached, start the fresh air system.

[0065] This embodiment is described by taking the operation of an air conditioner as an example.

[0066] In this embodiment, the air conditioner is used to detect human body signals using detection devices required for other functions. For example, the air conditioner's windless function requires detection of a person's position, or the air conditioner's direct blowing function requires detection of a person's position. Therefore, the air conditioner is generally equipped with a human body detection device, such as an infrared thermal sensor, a thermopile sensor, a millimeter-wave radar sensor, etc.

[0067] When a human presence signal is detected in a room where the air conditioner is operating, the human presence detection device determines the number of people based on the human presence signal. The time required for the carbon dioxide concentration in the room to reach a preset threshold is then determined based on the number of people and the room area. Furthermore, the time required to activate the fresh air system is determined based on the current time and the desired time. Thus, when the fresh air system's activation time is reached, the fresh air system is activated, achieving automatic activation of the fresh air system without the need for manual triggering by the user.

[0068] Optionally, in some embodiments, the number of people, room area, and CO2 concentration generation rate are obtained through experimental testing. The time required for the room to reach the safe CO2 concentration based on the current number of people is then determined based on the safe CO2 concentration in the room. This time is used as the activation time of the fresh air system. Based on this, a mapping relationship table is established between activation time, number of people, and room area. After the number of people and room area are determined, the corresponding activation time is found through this mapping relationship table.

[0069] Alternatively, in some embodiments, a linear relationship or a nonlinear relationship is established in the air conditioner among the number of people, the room area and the opening time of the fresh air system. For details, refer to the second embodiment.

[0070] Optionally, the start time may be a start time interval, such as when a human body signal is detected, the fresh air system is turned on after a preset time interval. Based on this, the air conditioner starts timing from the current time, and after the preset time interval, it is determined that the start time has arrived and the fresh air system is turned on.

[0071] Optionally, the fresh air system includes a fresh air fan and / or a valve for the fresh air outlet, and the method of starting the fresh air system includes opening the valve for the fresh air outlet and / or starting the fresh air fan (if there is no valve, just turn on the fresh air fan; if there is a valve, open the valve and turn on the fresh air fan at the same time).

[0072] Optionally, in some embodiments, since there is a small amount of carbon dioxide in the air in the room. In order to further accurately determine the start-up time of the fresh air system, after determining the start-up time of the fresh air system of the air conditioner based on the number of people, the area of ​​the room, and the preset number of people, area and the relationship between the start-up time, the start-up time is corrected using a preset correction value. The preset correction value is a fixed value, or the preset correction value varies according to the length of time the people in the room have been away. If no one is detected in the room for a long time, it means that the carbon dioxide concentration in the room is low. At this time, the calculated start-up time is relatively accurate, and the preset correction value is close to 1. If someone is detected in the room within the preset time, it means that the carbon dioxide concentration in the room is high. At this time, the calculated start-up time will be delayed. At this time, the preset correction value is reduced, so that the start-up time is shortened, and the fresh air system is turned on in a short time to avoid excessive carbon dioxide concentration in the room.

[0073] Optionally, in an embodiment in which a radar sensor is used to detect human body signals, the method further includes:

[0074] receiving a first radar signal and a second radar signal sent by the radar sensor, where the first radar signal and the second radar signal are scanned by the radar sensor at different times;

[0075] comparing the first radar signal and the second radar signal;

[0076] When the first radar signal and the second radar signal are not completely the same, it is determined that the human body signal is detected.

[0077] When the first radar signal and the second radar signal are completely identical, it is determined that the human body signal is not detected.

[0078] like Figure 3 As shown, the radar sensor 10 periodically scans the room, emitting radar signals. When the radar signals propagate to objects within the room, they reflect the signals. Upon receiving the reflected radar signals, the radar sensor 10 identifies objects in various locations within the room based on the reflection time and direction of the radar signals. When someone enters the room, the radar signal reflected off the human body differs from the radar signal reflected off the human's location the previous time before the person entered the room. Thus, by comparing radar signals scanned at different times, it is possible to determine whether a person has entered the room.

[0079] Optionally, the step of determining the number of people according to the human body signal includes:

[0080] determining a target area with different signals according to the first radar signal and the second radar signal;

[0081] The number of personnel is determined according to the number of the target areas.

[0082] In other words, the first and second radar signals are used to determine the number of areas with different signals, and then the number of people is calculated based on the number of areas. If three areas have different radar signals, it means there are three people. If one area has different radar signals, it means there is one person.

[0083] Optionally, the air conditioner in this embodiment has the function of automatically starting the air conditioner. When it is detected that a person enters the room, the temperature in the room is detected. When the temperature in the room is lower than a first preset temperature, the heating mode of the air conditioner is operated; when the temperature in the room is higher than a second preset temperature, the cooling mode of the air conditioner is operated, wherein the first preset temperature is lower than the second preset temperature.

[0084] Optionally, when the air conditioner starts the cooling mode or the heating mode, the operation time of the fresh air system affects the indoor cooling load or the heating load. Therefore, this embodiment also adjusts the operation time of the fresh air system. Please refer to the fourth embodiment for details.

[0085] In this embodiment, when a human body signal is detected in the room where the air conditioner is operating, the number of occupants is determined based on the human body signal; the activation time of the air conditioner's fresh air system is determined based on the number of occupants, the room area, and a preset relationship between the number of occupants, the area, and the activation time; and a timer is started. When the activation time is reached, the fresh air system is activated. A detection device built into the air conditioner determines the activation time of the fresh air system by detecting the number of occupants entering the room and the room area, thereby automatically activating the fresh air system. This eliminates the need for manual activation by the user and the addition of additional detection devices, reducing equipment costs. Furthermore, the activation time is determined based on the number of occupants and the room area to meet the required carbon dioxide concentration, improving activation time accuracy and ensuring timely ventilation without adding unnecessary cooling or heating loads.

[0086] Second embodiment

[0087] Please refer to Figure 4 This embodiment is based on the first embodiment. Optionally, the step of determining the opening time of the fresh air system of the air conditioner according to the number of people, the area of ​​the room, and the preset relationship between the number of people, the area, and the opening time includes:

[0088] Step S21, determining the product of the ratio of the room area to the number of people and a preset compensation coefficient;

[0089] Step S22: Based on the preset opening time of the fresh air system being less than or equal to the product, the opening time of the fresh air system is obtained.

[0090] This embodiment presets a relationship between the activation time, room area, and number of occupants. For example, the relationship between the activation time, room area, and number of occupants is as follows: t1 ≤ k*S / x, where t1 is the activation time (activation interval), S is the room area, X is the number of occupants, and k is a preset compensation coefficient. After determining the room area and the number of occupants, the activation time of the fresh air system is calculated based on the preset relationship t1 ≤ k*S / x.

[0091] It is understood that the relationship between the activation time, the number of occupants, and the room area is such that the activation time is less than or equal to the product of the ratio of the room area to the number of occupants and a preset compensation coefficient. The activation time is obtained from the product of the ratio of the room area to the number of occupants and the preset compensation coefficient.

[0092] In some embodiments, the preset compensation coefficient is 4.7, that is, the relationship between the opening time, room area and number of people is as follows: t1≤4.7*S / x.

[0093] The relationship between the opening time, room area and number of people is determined based on the following method:

[0094] Without considering the current indoor carbon dioxide concentration, the following parameters are used: a normal human inhales 9 liters of air per minute; the carbon dioxide concentration in exhaled air is 4%; the normal carbon dioxide concentration in air is 0.03%; and according to the "Residential Design Code," the ideal floor height for ordinary residences is 2.8 meters, with the clear height for bedrooms and living rooms not less than 2.4 meters. Referring to the "Indoor Air Quality Standard," the daily average carbon dioxide concentration should not exceed 0.1%. Assume the number of people in the room is x (people), the area of ​​the enclosed room is S (㎡), and the time interval from a person entering the room to the start of fresh air is t1 (minutes). Based on the amount of carbon dioxide produced by the breathing of x people during time interval t1 and the room volume, the increase in indoor carbon dioxide concentration caused by the breathing of x people during time interval t1 is determined. The carbon dioxide concentration is kept below or equal to 0.1% to 0.03%. By controlling t1 to keep the indoor carbon dioxide concentration below the normal concentration standard, the activation time of the fresh air system can be accurately determined.

[0095] Optionally, the opening time, the number of people, and the room area are derived by the following formula:

[0096]

[0097] This simplifies to t1≤4.7S / x. That is, when x people enter a room of S square meters, the fresh air system should be turned on after 4.7S / x minutes to reduce the indoor carbon dioxide concentration.

[0098] In this embodiment, the start-up time of the fresh air system is determined by estimating the carbon dioxide concentration in the room based on the amount of carbon dioxide produced by the actual breathing of the person and determining when the carbon dioxide concentration reaches a preset threshold. This can not only enable the fresh air to be turned on in time to reduce the indoor carbon dioxide concentration and avoid excessive carbon dioxide concentration, but also avoid turning on the fresh air too early and affecting the indoor heating load or cooling load.

[0099] Third embodiment

[0100] Please refer to Figure 5 This embodiment is based on the second embodiment described above. The concentration of carbon dioxide produced by breathing varies depending on the state of a person. To more accurately calculate the opening time of the fresh air system, this embodiment determines the opening time of the fresh air system based on the different states of the person. Optionally, before the step of determining the ratio of the room area to the number of people multiplied by a preset compensation coefficient, the following steps may also be included:

[0101] Step S23, determining the status of the personnel;

[0102] Step S24 : determining the preset compensation coefficient according to the state of the person, wherein the magnitude of the preset compensation coefficient when the person is in motion is different from the magnitude of the preset compensation coefficient when the person is stationary.

[0103] This embodiment is based on the second embodiment described above. After confirming the number of people, the person status is determined, and then the preset compensation coefficient is determined based on the person status. The preset compensation coefficient is then used to calculate the opening time of the fresh air system.

[0104] It should be noted that the amount of carbon dioxide produced by a person's breathing in different states is different. For example, when a person is in motion, the breathing frequency increases, and the amount of carbon dioxide produced per unit time increases. When a person is at rest, the breathing frequency is low, and the amount of carbon dioxide produced per unit time is small. Therefore, when a person is in motion, the carbon dioxide concentration in the room can quickly reach the preset threshold. At this time, the start-up time of the fresh air system is earlier than when the person is at rest. That is, the preset compensation coefficient of the person in motion is smaller than the preset compensation coefficient of the person in rest. The smaller the preset compensation coefficient, the shorter the start-up time, that is, the shorter the time interval from the person entering the room to the start-up of the fresh air system.

[0105] In some embodiments, the amount of carbon dioxide produced by a person in motion is determined experimentally, and the amount of carbon dioxide produced per unit time in this state is substituted into the formula in the second embodiment to obtain t1≤k*S / x, where k is less than 4.7 (the preset compensation coefficient for a person in a stationary state is 4.7).

[0106] Based on this, a relationship between the person's status and the preset compensation coefficient is established. When the person's status is determined, the preset compensation coefficient corresponding to the person's status is obtained based on the preset relationship between the person's status and the preset compensation coefficient. The corresponding preset compensation coefficient is then used to calculate the start time of the fresh air system, making the start time of the fresh air system more accurate.

[0107] Optionally, in this embodiment, the state of the person can be detected by a detection device for detecting human body signals, such as a radar sensor or an infrared sensor.

[0108] Fourth embodiment

[0109] Please refer to Figure 6 This embodiment is based on all the above embodiments. Optionally, after the step of turning on the fresh air system, it further includes:

[0110] Step S40, obtaining the running time, and shutting down the fresh air system after running the running time;

[0111] Alternatively, when no human body signal is detected in the room, the fresh air system is turned off.

[0112] After turning on the fresh air system, the system is turned off after running for the specified operating time. Alternatively, the system is turned off after no human body signals are detected in the room. This prevents the fresh air system from being on for too long, which could affect the cooling / heating load in the room. Alternatively, in some embodiments, after turning on the fresh air system, it is determined whether the air conditioner is in a heat exchange mode. If so, the operating time is obtained, and after running for the specified operating time, the fresh air system is turned off. If not, the fresh air system is turned off when no human body signals are detected in the room, where the heat exchange mode includes the cooling mode and the heating mode.

[0113] In this embodiment, the operating time can be a preset fixed time. It can also be determined based on the room size and the actual capacity of the fresh air system. In this way, the indoor fresh air regulation is more accurate (without affecting the cooling / heating load of the room or causing the indoor carbon dioxide concentration to be too high), further improving the regulation effect of the fresh air system.

[0114] Optionally, a mapping relationship table of room area, fresh air intake volume, and operating time of the fresh air system can be preset. In actual use, after obtaining the room area and fresh air intake volume, the corresponding operating time is searched through the mapping relationship table, and the fresh air system is operated according to the operating time.

[0115] Optionally, in some embodiments, the step of obtaining the running time includes:

[0116] Obtaining the fresh air intake volume of the fresh air system per unit time;

[0117] The time required to replace the air in the room with fresh air is determined according to the fresh air intake volume and the volume of the room, and the time is used as the operating time.

[0118] The fresh air intake volume is the volume of air entering the room per unit time, and the time required for the air to fill the room is the operating time.

[0119] This embodiment uses the principle of fresh air replacing old indoor air to form the following formula:

[0120]

[0121] Among them, t2 is the operating time of the fresh air system (the time required for fresh air to fill the room); N (m3 / h) is the fresh air intake volume; S is the building area, and 2.4 is the reference standard for room height (the indoor net height of ordinary residential floors should not be less than 2.4m).

[0122] Optionally, the fresh air intake volume N is different for different air conditioners. In some embodiments, the fresh air intake volume is set when the air conditioner leaves the factory, that is, the fresh air intake volume is the rated fresh air intake volume.

[0123] In some embodiments, the fresh air intake volume can be determined based on parameters such as fan speed, filter usage time or number of uses, etc.

[0124] Alternatively, in some embodiments, the fresh air intake volume is linearly related to the usage time of the fresh air system, and the fresh air intake volume is determined according to the usage time of the fresh air system.

[0125] When the air conditioner is running in cooling mode or heating mode at the same time, this embodiment can effectively avoid the fresh air system being turned on for too long and affecting the indoor cooling load / heating load by accurately calculating the operating time of the fresh air system, thereby avoiding unnecessary waste.

[0126] Fifth embodiment

[0127] This embodiment is based on all the above embodiments. Optionally, the step of starting the timing and turning on the fresh air system when the turn-on time is reached includes:

[0128] Start timing, and when the start time is reached, detect human body signals in the room;

[0129] When the human body signal is detected, turning on the fresh air system;

[0130] When the human body signal is not detected, the fresh air system is kept in a closed state.

[0131] It's important to note that people may only stay briefly in a room, or they may come and go frequently. When someone enters, the timer starts, and the fresh air system turns on when the start time is reached. However, it's possible that no one is in the room when the fresh air system turns on. If no one is in the room and the fresh air system is turned off, this can cause the fresh air system to frequently turn on or off, potentially damaging the system.

[0132] Based on this, this embodiment determines a start time and starts timing, then detects human body signals in the room in real time or periodically. If a person leaves the room before the start time is reached, no human body signals in the room are detected before the fresh air system is turned on. In this case, the fresh air system is kept off and not turned on, thereby avoiding the situation where the fresh air system is still turned on after the person leaves. If human body signals are still detected in the room when the start time is reached, the fresh air system is turned on.

[0133] This embodiment can effectively avoid frequent startup or shutdown of the fresh air system.

[0134] It should be noted that the above are only preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for controlling an air conditioner, characterized in that: The air conditioner includes a fresh air system, and the control method of the air conditioner includes: When a human body signal is detected in the room where the air conditioner is operating, obtaining the number of people according to the human body signal; Determining the start time of the fresh air system of the air conditioner according to the number of people, the area of ​​the room, and the relationship between the number of people, the area, and the start time; Start timing, and when the start time is reached, start the fresh air system; The step of determining the start time of the fresh air system of the air conditioner according to the number of people, the area of ​​the room, and the preset relationship between the number of people, the area, and the start time includes: Determine the product of the ratio of the room area to the number of people and a preset compensation coefficient; Based on the preset opening time of the fresh air system being less than or equal to the product, the opening time of the fresh air system is obtained.

2. The air conditioner control method according to claim 1, wherein: Before the step of determining the product of the ratio of the room area to the number of people and a preset compensation coefficient, the method further includes: Determine the status of the person; The preset compensation coefficient is determined according to the state of the person, wherein the size of the preset compensation coefficient when the person is in motion is different from the size of the preset compensation coefficient when the person is in a stationary state.

3. The air conditioner control method according to claim 1, wherein: After the step of starting the fresh air system, the method further includes: Obtaining the running time, and shutting down the fresh air system after running the running time; Alternatively, when no human body signal is detected in the room, the fresh air system is turned off.

4. The air conditioner control method according to claim 3, wherein: The step of obtaining the running time includes: Obtaining the fresh air intake volume of the fresh air system per unit time; The time required to replace the air in the room with fresh air is determined according to the fresh air intake volume and the volume of the room, and the time is used as the operating time.

5. The air conditioner control method according to claim 1, wherein: The air conditioner is provided with a radar sensor, and the method further comprises: receiving a first radar signal and a second radar signal sent by the radar sensor, where the first radar signal and the second radar signal are scanned by the radar sensor at different times; comparing the first radar signal and the second radar signal; When the first radar signal and the second radar signal are not completely the same, it is determined that the human body signal is detected.

6. The air conditioner control method according to claim 5, wherein: The step of determining the number of people according to the human body signal comprises: determining a target area with different signals according to the first radar signal and the second radar signal; The number of personnel is determined according to the number of the target areas.

7. The air conditioner control method according to claim 1, wherein: The step of starting the fresh air system when the start time is reached includes: Start timing, and when the start time is reached, detect human body signals in the room; When the human body signal is detected, turning on the fresh air system; When the human body signal is not detected, the fresh air system is kept in a closed state.

8. An air conditioner, characterized in that: The air conditioner includes a memory, a processor, and a control program stored in the memory and executable on the processor. When the control program is executed by the processor, the steps of the air conditioner control method according to any one of claims 1 to 7 are implemented.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a control program, and when the control program is executed by a processor, the steps of the air conditioner control method according to any one of claims 1 to 7 are implemented.

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