Fan control method and device, fan and medium

Abstract

The embodiment of the invention provides a fan control method and device, a fan and a medium. The method comprises the steps that space information of a room where the fan is located is obtained; the space information comprises the position of a fan in the room, the position of a window and the opening and closing state of the window; and controlling the orientation of an air outlet of the fan according to the position of the fan, the position of the window and the opening and closing state of the window in the room. According to the embodiment of the invention, the current optimal air outlet orientation of the fan is determined by acquiring the space information of the room where the fan is located, and the orientation of the air outlet of the fan is automatically adjusted, so that the indoor air circulation efficiency is improved, and meanwhile, the dependence on manual operation is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of fan control, and in particular to a fan control method and a fan control device. Background Art

[0002] Most smart fans currently on the market still rely on users to manually control their on / off function and their direction of movement, either through a mobile app or remotely. While convenient, these fans lack the ability to autonomously sense indoor conditions and intelligently adjust their movements. For example, users can set the fan's operating mode and swing angle, but the fan cannot automatically adjust the airflow direction based on actual indoor conditions, resulting in uneven air circulation and potential air stagnation in certain areas. Summary of the Invention

[0003] In view of the above problems, embodiments of the present invention are proposed to provide a fan control method, device, fan, and medium that overcome the above problems or at least partially solve the above problems.

[0004] According to a first aspect of an embodiment of the present invention, a fan control method is provided, wherein the method includes:

[0005] Acquire spatial information of the room where the fan is located; the spatial information includes: the location of the fan in the room, the location of the window, and the open / close status of the window;

[0006] The direction of the air outlet of the fan is controlled according to the position of the fan in the room, the position of the window and the open / close state of the window.

[0007] Optionally, the spatial information further includes a position of a ceiling corner; and controlling the direction of the fan outlet according to the position of the fan, the position of the window, and the open / closed state of the window in the room includes:

[0008] determining whether the fan is close to the window according to the position of the fan and the position of the window;

[0009] When the fan is close to the window and the window is in the open state, the air outlet of the fan is controlled to face away from the window;

[0010] When the fan is away from the window, or the window is in a closed state, the air outlet of the fan is controlled to face the corner of the ceiling.

[0011] Optionally, determining whether the fan is close to the window according to the position of the fan and the position of the window includes:

[0012] When the distance between the window and the fan is less than or equal to a preset distance, determining that the position of the fan in the room is close to the position of the window;

[0013] When the distance between the window and the fan is greater than a preset distance, it is determined that the position of the fan in the room is away from the position of the window.

[0014] Optionally, controlling the position of the fan's air outlet toward a corner of the ceiling includes:

[0015] Determine the location of the ceiling corner closest to the fan;

[0016] The air outlet of the fan is directed in a direction such that the center of the fan blade is aligned with the corner of the ceiling closest to the fan.

[0017] Optionally, the fan is equipped with a radar, and obtaining the spatial information of the room includes:

[0018] Obtaining the time difference between the radar transmitting signals at different locations in the room and receiving corresponding reflected signals, as well as the strength of the reflected signals;

[0019] The spatial information of the room is determined according to the time difference and the strength of the reflected signal.

[0020] Optionally, determining the spatial information of the room according to the time difference and the strength of the reflected signal includes:

[0021] Determining the walls, windows, and switch states of the windows in the room according to the strength of the reflected signals at different positions;

[0022] determining the distances of the different locations in the room relative to the radar based on time differences between transmitted signals and received corresponding reflected signals at different locations in the room;

[0023] The positions of the walls and windows in the room are determined according to the distances of different positions of the room relative to the radar.

[0024] Optionally, the method further includes:

[0025] Get the current wind speed at the window location;

[0026] The wind speed of the fan is determined according to the current wind speed.

[0027] According to a second aspect of an embodiment of the present invention, a fan control device is provided, characterized in that the device includes:

[0028] A first acquisition module is configured to acquire spatial information of a room where a fan is located; the spatial information includes: a position of the fan in the room, a position of a window, and an open / closed state of the window;

[0029] The first control module is used to control the direction of the air outlet of the fan according to the position of the fan in the room, the position of the window and the open / close state of the window.

[0030] Optionally, the spatial information further includes the position of a ceiling corner; and the determining module includes:

[0031] a first determining submodule, configured to determine whether the fan is close to the window according to the position of the fan and the position of the window;

[0032] A first control submodule is configured to control the air outlet of the fan to face away from the window when the fan is close to the window and the window is in an open state;

[0033] The second control submodule is used to control the air outlet of the fan to be positioned toward a corner of the ceiling when the fan is away from the window or the window is closed.

[0034] Optionally, the first determining submodule includes:

[0035] a first determining unit, configured to determine that the position of the fan in the room is close to the window when the distance between the window and the fan is less than or equal to a preset distance;

[0036] The second determining unit is configured to determine that the position of the fan in the room is away from the position of the window when the distance between the window and the fan is greater than a preset distance.

[0037] Optionally, the second control submodule includes:

[0038] a third determining unit, configured to determine a position of a ceiling corner closest to the fan;

[0039] The first control unit is used to control the direction of the air outlet of the fan so that the center of the fan blade is aligned with the corner of the ceiling closest to the fan.

[0040] Optionally, the fan is equipped with a radar, and the first acquisition module includes:

[0041] A first acquisition submodule is configured to acquire a time difference between a transmission signal of the radar at different locations in the room and a corresponding reception of a reflected signal, as well as an intensity of the reflected signal;

[0042] The second determining submodule is configured to determine the spatial information of the room according to the time difference and the strength of the reflected signal.

[0043] Optionally, the second determining submodule includes:

[0044] a fourth determining unit, configured to determine the walls and windows in the room and the switch status of the windows according to the strength of the reflected signals at different positions;

[0045] a fifth determining unit, configured to determine distances of different locations in the room relative to the radar based on time differences between transmitted signals and received corresponding reflected signals at different locations in the room;

[0046] A sixth determining unit is configured to determine the positions of the walls and windows in the room according to the distances of different positions of the room relative to the radar.

[0047] Optionally, the device further includes:

[0048] A second acquisition module is used to obtain the current wind speed at the window position;

[0049] The first determining module is configured to determine the wind speed of the fan according to the current wind speed.

[0050] According to a third aspect of the present invention, a fan is provided, comprising: a processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein the computer program implements the steps of the fan control method as described above when executed by the processor.

[0051] According to a fourth aspect of the present invention, a computer-readable storage medium is provided, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the fan control method as described above are implemented.

[0052] The technical solutions provided by the embodiments of the present invention may have the following beneficial effects:

[0053] Embodiments of the present invention provide a fan control method, device, fan, and medium. These methods obtain spatial information about the room where the fan is located; the spatial information includes the fan's position, the window's position, and the window's open / close status. Based on the fan's position, the window's position, and the window's open / close status, the fan's air outlet orientation is controlled. By obtaining spatial information about the room where the fan is located, the embodiments of the present invention determine the fan's current optimal air outlet orientation and automatically adjust the fan's air outlet orientation, thereby improving indoor air circulation efficiency and reducing reliance on manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 is a flowchart of a fan control method provided by an embodiment of the present invention;

[0055] Figure 2 is a flowchart of a fan control method provided by an embodiment of the present invention;

[0056] Figure 3 Schematic diagram of fan positions in a fan control method provided by an embodiment of the present invention;

[0057] Figure 4 1 is a schematic diagram of fan positions according to another fan control method provided by an embodiment of the present invention;

[0058] Figure 5 This is a structural block diagram of a fan control device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0059] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0060] One of the core concepts of the embodiment of the present invention is to determine the current optimal outlet direction of the fan by obtaining spatial information of the room where the fan is located, and automatically adjust the outlet direction of the fan, thereby improving indoor air circulation efficiency and reducing dependence on manual operation.

[0061] Reference Figure 1 , shows a flowchart of a fan control method provided by an embodiment of the present invention, the method may specifically include the following steps:

[0062] Step 101: Acquire spatial information of a room where a fan is located; the spatial information includes: the location of the fan in the room, the location of the window, and the open / close status of the window;

[0063] For example, spatial information can refer to the room's layout and obstruction distribution. The fan's position determines its air supply range and impact area. Window location and its open / closed state directly influence the circulation and exchange efficiency between indoor and outdoor air. For example, when windows are open, fans can introduce fresh air or expel hot air; when windows are closed, they should focus on circulating and purifying the indoor air. By comprehensively analyzing this data, the intelligent fan system can determine the optimal air supply direction, wind speed, and swing angle to avoid air stagnation or ineffective air supply.

[0064] A radar can be mounted at the center of the fan's blades. If the fan can rotate 360°, the radar can transmit signals to various locations in the room as the fan rotates. The radar can be a millimeter-wave radar, which operates reliably in all weather conditions and can penetrate non-metallic materials. This means it can effectively identify the location of obstacles such as walls and furniture, and is unaffected by soft objects like curtains. By measuring the time difference between the radar's transmitted signal at different locations in the room and the corresponding reflected signal received, the distance between the radar and the object in the room can be calculated, and spatial characteristics such as the object's location, size, and shape can be determined. The strength of the reflected signal provides information about the object's surface properties. For example, hard surfaces like walls produce stronger reflected signals, while soft surfaces like curtains produce weaker reflected signals. This helps distinguish different materials and structures, further refining spatial information. Furthermore, the radar can determine whether a person is in the same room as the fan, turning off the fan to save energy.

[0065] Step 102: Control the direction of the air outlet of the fan according to the position of the wall in the room, the position of the window, and the open / close status of the window.

[0066] For example, the fan's location determines its airflow coverage and impact area, while the window's position and opening / closing status directly impact the efficiency of indoor / outdoor air exchange. When the window is closed, the fan should primarily optimize indoor air circulation, avoiding wasting wind in ineffective directions. When the window is open, the fan can adjust the air outlet direction based on the window's position to direct fresh air in or expel hot air, improving ventilation.

[0067] Furthermore, ceiling corners are often "blind spots" or "stagnant areas" for air flow. If fans cannot effectively cover these areas, uneven air circulation can occur indoors, reducing overall ventilation effectiveness. By incorporating the location of ceiling corners into spatial information, smart fans can more comprehensively plan air supply directions and angles, ensuring air flow covers the entire room.

[0068] By determining whether the fan is near the window, the fan's current environmental conditions are determined, thereby optimizing its operating mode. To accurately determine whether the fan is within a range that effectively utilizes the window for air exchange, the fan is positioned near the window when the distance between the window and the fan is less than or equal to a preset distance. The preset distance can be determined based on the fan's effective air supply range and air flow characteristics; for example, the preset distance can be 1 meter. When the distance between the window and the fan is less than or equal to 1 meter, the fan is positioned near the window. When the distance between the window and the fan is greater than 1 meter, the fan is positioned away from the window. When the fan is near a window, its air supply direction and air flow path are more likely to synergize with the air inlet or outlet formed by the window, thereby improving the efficiency of indoor and outdoor air exchange. For example, if the window is open, a fan near the window and adjusting its air supply direction as needed can more effectively introduce fresh air or expel hot air, achieving rapid ventilation and cooling. However, if the fan is far from the window or the window is closed, its impact on air flow around the window is less significant, and in these situations, the focus should be on optimizing indoor air circulation. This relative position-based judgment mechanism enables the fan to dynamically adjust its operating strategy according to different installation environments, improving its intelligent usage and energy efficiency.

[0069] In practice, if a fan is near an open window and the fan outlet is facing the window, it may block or disrupt the natural flow of outdoor air, even creating a "short circuit" and reducing ventilation effectiveness. Conversely, when the fan outlet is facing away from the window, it effectively directs outdoor air into the room through the window and promotes indoor air circulation, creating a smooth intake and exhaust path and improving ventilation efficiency. This is particularly useful for window ventilation or natural cooling scenarios, helping to improve indoor air quality and comfort. For example, at night or in colder temperatures, opening a window and allowing the fan to exhaust hot air can accelerate the entry of fresh, cool air through the window, achieving natural cooling. When fresh air is needed, facing the fan away from the window also helps to push stale air outward, improving overall air quality. By intelligently determining the fan's position and window status, the system dynamically adjusts the airflow direction, avoiding energy waste and poor air circulation caused by improper settings. This results in a more energy-efficient, comfortable, and efficient intelligent air management solution.

[0070] When fans are positioned away from windows or windows are closed, indoor air circulation primarily relies on the circulation and distribution of internal air. Without the active introduction of fresh air from outside, the fan's primary role shifts to optimizing indoor air flow and reducing stagnant areas. Ceiling corners are often areas of weak or even stagnant air flow, creating "dead zones" that affect overall ventilation and temperature uniformity. Therefore, directing the fan's air outlet toward the ceiling corners can effectively promote air flow in these areas, promoting even air circulation throughout the room. For example, directing air upward toward the ceiling diffuses along the ceiling and flows back downward, creating widespread convection currents, improving air coverage and comfort. This approach also avoids the discomfort of direct fan airflow on the human body, achieving a softer, more natural air flow. By integrating the relative position of the fan and window, as well as the window's open / close status, smart fans can dynamically adjust air flow based on varying environmental conditions, enhancing the intelligence and efficiency of air management and truly implementing a people-centric, on-demand intelligent air circulation solution.

[0071] An embodiment of the present invention provides a fan control method that obtains spatial information about the room where the fan is located; the spatial information includes the fan's position, the window's position, and the window's open / close status. The method then controls the direction of the fan's air outlet based on the fan's position, the window's position, and the window's open / close status. This embodiment of the present invention determines the fan's current optimal air outlet direction by obtaining spatial information about the room where the fan is located, and automatically adjusts the fan's air outlet direction, thereby improving indoor air circulation efficiency while reducing reliance on manual operation.

[0072] Reference Figure 2 , shows a flowchart of a fan control method provided by an embodiment of the present invention, the method may specifically include the following steps:

[0073] Step 201: Acquire spatial information of the room where the fan is located; the spatial information includes: the location of the fan in the room, the location of the window, the open / close status of the window, and the location of the ceiling corner;

[0074] For example, spatial information can refer to the room's layout and obstacle distribution. The fan's location determines its air supply range and affected area. The location of windows and their open / closed status directly affect the circulation pattern and exchange efficiency between indoor and outdoor air. In addition, ceiling corners are often "blind spots" or "stagnant areas" for air flow. If the fan cannot effectively cover these areas, it may lead to uneven indoor air circulation and reduce the overall ventilation effect. By incorporating ceiling corners into spatial information, smart fans can more comprehensively plan the direction and angle of air supply to ensure that air flow covers the entire room space. For example, when the window is open, the fan can cooperate to introduce fresh air or exhaust hot air; when the window is closed, it should focus on circulating and purifying the indoor air. By comprehensively analyzing this data, the smart fan system can determine the optimal air supply direction, wind speed, and swing angle to avoid air stagnation or ineffective air supply.

[0075] In one embodiment, the fan is equipped with a radar, and step 201 may include the following sub-steps:

[0076] Sub-step S11, obtaining the time difference between the radar transmitting signals at different locations in the room and receiving corresponding reflected signals, as well as the strength of the reflected signals;

[0077] For example, a radar can be mounted at the center of a fan's blades. The fan can be a circulating fan capable of 360° rotation. Therefore, a radar mounted at the center of the fan's blades can transmit signals to various locations in the room as the fan rotates. The radar can be a millimeter-wave radar, which operates stably in all weather conditions and can penetrate non-metallic materials. This means it can effectively identify the location of obstacles such as walls and furniture, without being affected by soft objects like curtains. By measuring the time difference, the distance between the radar and objects in the room can be calculated, thereby determining spatial characteristics such as the object's location, size, and shape. The strength of the reflected signal provides information about the surface properties of the object. For example, hard surfaces like walls produce stronger reflected signals, while soft surfaces like curtains produce weaker reflected signals. This helps distinguish different materials and structures, further refining spatial information. Furthermore, the radar can determine whether a person is in the same room as the fan, enabling the fan to be turned off to save energy.

[0078] Sub-step S12: determining the spatial information of the room according to the time difference and the strength of the reflected signal.

[0079] For example, by measuring the time difference between the radar's transmitted signal and the received reflected signal, the distance between the obstacle and the radar can be determined. A longer time difference indicates a farther obstacle, while a shorter time difference indicates a closer obstacle. By transmitting signals at multiple points in different directions within a room, the radar acquires distance information at each location, thereby constructing the spatial contours of the room and identifying the distribution of obstacles such as walls, furniture, doors, and windows. Furthermore, the intensity of the reflected signal provides important information about the surface material of the object. Different materials reflect radar waves differently. For example, concrete or brick walls typically reflect strong signals, while glass, wooden furniture, or fabric reflect weaker signals. Therefore, at the same distance, the difference in reflection intensity can help distinguish different types of obstacles. By combining data from both time and intensity, the intelligent system can not only determine the position and shape of objects in the room, but also identify their material properties, thereby more accurately determining the relative position of the fan within the room and the state of its surroundings. This radar-based spatial modeling method provides smart devices with powerful environmental understanding capabilities, enabling them to dynamically adjust their operating strategies based on the actual spatial layout, achieving more intelligent and precise control, and improving usage efficiency and user experience.

[0080] In one embodiment, sub-step S12 may include the following sub-steps:

[0081] Sub-step S121, determining the walls, windows, and the open / close status of the windows in the room according to the strength of the reflected signals at different positions;

[0082] For example, when a radar transmission signal encounters objects of different materials, the intensity of its reflected signal will vary depending on the material properties. Walls are usually made of highly reflective materials such as concrete, brick, or metal, so their reflected signal intensity is high and relatively stable, approaching or reaching the preset wall reflection signal threshold. At this time, it can be determined that there is a wall at that location. Windows are usually made of glass, and the glass reflection signal threshold is lower than the wall reflection threshold. When the intensity of the reflected signal approaches or reaches the preset glass reflection signal threshold, it can be determined that there is a window at that location and the window is closed. If the reflected signal intensity is significantly lower than the glass reflection signal threshold and close to zero, it indicates that the microwave has penetrated the window, indicating that the window is open and there are almost no obstacles blocking the propagation of radar waves.

[0083] Sub-step S122, determining the distances of the different locations in the room relative to the radar based on the time differences between the transmitted signals and the received corresponding reflected signals at the different locations in the room;

[0084] For example, by measuring the time difference between the transmitted signal and the received reflected signal, the radar can calculate the signal's propagation time in the air, thereby determining the distance of different locations in the room relative to the radar. This principle is based on the fact that microwaves propagate in air at a speed close to the speed of light. Therefore, by accurately measuring the time it takes for a signal to be transmitted and returned, the distance between the obstacle and the radar can be calculated. By scanning the room in multiple directions and recording the round-trip time of the signal in each direction, a spatial distribution map of the room can be constructed, identifying the position and outline of objects such as walls, furniture, doors, and windows.

[0085] For example, the speed of microwave propagation in air is about the speed of light c = 3*108 m / s. If the radar receives a reflected signal with a time delay of t = 10 -6 Seconds, according to the distance formula d = 1 / 2ct, then the distance between the reflecting object (such as a wall) and the radar is d = 1 / 2*3*108*10 -6 rice.

[0086] Sub-step S123, determining the positions of the walls and windows in the room according to the distances of different positions of the room relative to the radar.

[0087] For example, when the radar is working, it transmits signals to the surrounding space and receives signals reflected from obstacles. By accurately calculating the time difference between the signal transmission and return, the distance between the obstacle and the radar can be converted. Since the propagation speed of electromagnetic waves in the air is close to the speed of light, even a very short time difference can correspond to relatively accurate spatial distance information. By transmitting signals in multiple directions and angles, the radar can obtain distance data from multiple locations inside the room, thereby determining the overall outline of the room and the distribution of obstacles. Based on this data, the positions of fixed structures such as walls, furniture, doors and windows can be identified. This spatial modeling method based on radar ranging can not only realize the recognition of static environments, but also can be combined with dynamic data analysis to realize the detection of moving objects, providing smart home devices (such as smart fans) with accurate spatial perception capabilities, enabling them to automatically adjust their operating strategies according to the actual environment, improving the level of intelligence and user experience.

[0088] Step 202, determining whether the fan is close to the window based on the position of the fan and the position of the window;

[0089] For example, ceiling corners are often "blind spots" or "stagnant areas" for air flow. If fans cannot effectively cover these areas, uneven air circulation can occur in the room, reducing overall ventilation effectiveness. By incorporating ceiling corners into spatial information, smart fans can more comprehensively plan air supply direction and angle, ensuring air flow covers the entire room.

[0090] By determining whether the fan is near a window, the system can determine the fan's current environmental conditions and optimize its operating mode. For example, when the fan is near a window, the airflow direction can be adjusted based on the window's open or closed state: if the window is open, the fan is directed away from the window to enhance natural ventilation; if the window is closed, the fan focuses on improving indoor air circulation. This relative position-based judgment mechanism enables the fan to dynamically adjust its operating strategy based on different installation environments, improving operational intelligence and energy efficiency.

[0091] In one embodiment, step 202 may include the following sub-steps:

[0092] Sub-step S21, when the distance between the window and the fan is less than or equal to a preset distance, determining that the position of the fan in the room is close to the window;

[0093] For example, to accurately determine whether the fan is within the range that effectively utilizes the window for air exchange, the fan is determined to be close to the window when the distance between the window and the fan is less than or equal to a preset distance. The preset distance can be determined based on the fan's effective air supply range and air flow characteristics. For example, the preset distance can be 1 meter. When the distance between the window and the fan is less than or equal to 1 meter, the fan is determined to be close to the window.

[0094] When a fan is located near a window, its airflow direction and airflow path are more likely to synergize with the air inlet or outlet created by the window, thereby improving the efficiency of indoor and outdoor air exchange. For example, if a fan is close to the window and adjusts its airflow direction according to demand, it can more effectively introduce fresh air or exhaust hot air, achieving rapid ventilation and cooling. On the other hand, if the fan is located away from the window, its impact on the air flow around the window is less, and in this case, the focus should be on optimizing indoor air circulation.

[0095] Sub-step S22: When the distance between the window and the fan is greater than a preset distance, determining that the position of the fan in the room is far away from the position of the window.

[0096] For example, to accurately determine the fan's current air circulation environment, when the distance between the window and the fan is greater than a preset distance, the fan is determined to be located away from the window, and its air supply strategy is optimized accordingly. In this case, the fan's impact on the air flow around the window is weak, making it difficult to effectively guide indoor and outdoor air exchange through direct air supply. If the fan continues to be controlled in the mode close to the window, not only will it fail to improve ventilation efficiency, it may also cause energy waste or air flow disturbances. For example, the preset distance can be 1 meter. When the distance between the window and the fan is greater than 1 meter, the fan is determined to be located away from the window.

[0097] Reference Figure 3, shows a fan position schematic diagram of a fan control method provided by an embodiment of the present invention, in which the switch state of the window is open and the fan is close to the window.

[0098] Step 203: When the fan is close to the window and the window is turned on, the air outlet of the fan is controlled to face away from the window.

[0099] For example, to more effectively utilize natural ventilation and improve indoor air circulation efficiency, it's necessary to control the fan's outlet to face away from the window when the fan is near an open window. If the fan outlet faces away from the window, it could block or disrupt the natural flow of outdoor air, even creating a "short-circuit" in the airflow and reducing ventilation effectiveness. Conversely, if the fan outlet faces away from the window, it can direct indoor air inward from the window, promoting indoor air circulation and creating a smoother intake and exhaust path. For example, at night or when temperatures are low, opening a window and allowing the fan to exhaust hot air can accelerate the entry of fresh, cool air through the window, achieving natural cooling. When fresh air is needed, facing the fan away from the window also helps to push stale air outward, improving overall air quality. By combining intelligent judgment of fan position and window status, the system can dynamically adjust the airflow direction, avoiding energy waste and poor air circulation caused by improper settings, thereby achieving a more energy-efficient, comfortable, and efficient intelligent air management solution.

[0100] Reference Figure 4 , shows a fan position schematic diagram of another fan control method provided by an embodiment of the present invention, in which the switch state of the window is closed and the fan is away from the window.

[0101] Step 204 : When the fan is away from the window, or the window is closed, the air outlet of the fan is controlled to face the corner of the ceiling.

[0102] For example, when a fan is positioned away from a window or the window is closed, indoor air circulation primarily relies on the circulation and distribution of internal air. In this situation, lacking the active introduction of fresh air from outside, the fan's primary role shifts to optimizing indoor air flow and reducing stagnation areas. Ceiling corners are often areas with weak or even stagnant air flow, easily creating "dead zones" that affect overall ventilation and temperature uniformity. Therefore, in this situation, directing the fan's air outlet toward the ceiling corner can effectively promote air flow in these areas and promote even air circulation throughout the room. For example, directing air upward toward the ceiling will diffuse along the ceiling and flow back downward, creating a wide range of air convection, thereby improving air coverage and comfort. This approach also avoids the discomfort of direct fan airflow on the human body, achieving a softer, more natural air flow. By combining the relative position of the fan and window, as well as determining the window's open / close status, the smart fan can dynamically adjust air flow based on varying environmental conditions, enhancing the intelligence and efficiency of air management and truly realizing a people-centric, on-demand intelligent air circulation solution.

[0103] In one embodiment, step 204 may include the following sub-steps:

[0104] Sub-step S31, determining the position of the ceiling corner closest to the fan;

[0105] For example, ceiling corners are often areas where air flow is weak or even stagnant, easily forming "dead zones" that affect overall ventilation and temperature uniformity. Especially when windows are closed or fans are positioned away from them, indoor air is primarily circulated by the fan. If the air supply direction fails to effectively cover these areas, localized air circulation can be poor, reducing user comfort. By identifying the ceiling corners closest to the fan, smart fans can dynamically adjust the direction of the air outlet to direct airflow to these air stagnation areas. Leveraging the natural flow of air as it diffuses and then sinks along the ceiling, this promotes air circulation over a wider area and improves air supply efficiency. Furthermore, this strategy reduces the discomfort caused by direct airflow on the human body, achieving a softer and more uniform air supply experience. Therefore, incorporating ceiling corner position determination into smart fan control systems is a key factor in improving the intelligence of air management and optimizing air supply strategies, enabling precise and efficient air flow control tailored to different spatial layouts.

[0106] Sub-step S32, controlling the direction of the air outlet of the fan so that the center of the fan blade is aligned with the position of the ceiling corner closest to the fan.

[0107] For example, the flow of air in a room is directional and attenuated, and the fan's air supply capacity decreases with increasing distance. Therefore, prioritizing improvements in the nearest ceiling corners can achieve the best ventilation effect with minimal energy consumption. In contrast, if the air outlet is directed to a farther corner of the ceiling, the airflow may be greatly attenuated during propagation due to resistance, obstacles or diffusion, making it difficult to effectively promote air flow in this area, resulting in energy waste. In addition, the nearest ceiling corner is usually within the fan's optimal air supply angle range, and precise air supply can be achieved without significantly adjusting the air outlet direction, which helps to improve the system's response speed and control accuracy. By prioritizing the nearest air dead corners, local air circulation can be quickly improved, and natural air convection can be used to drive flow over a wider range, thereby achieving efficient, energy-saving and comfortable indoor air management.

[0108] like Figure 4 As shown, when the fan is at a diagonal position in the room, the fan's tilt angle X can also be determined by determining the distance C between the center of the fan blade and the corner of the ceiling farthest from the fan, and the distance A between the center of the fan blade and the intersection of the two walls farthest from the fan, and using the trigonometric function SinX=A / C.

[0109] In one embodiment, the method further includes: obtaining a current wind speed at the window position; and determining a wind speed of the fan based on the current wind speed.

[0110] For example, to obtain key data on indoor and outdoor air flow in real time, thereby improving the smart fan's ability to sense and control the ventilation environment, a wind speed detector can be installed on the window. The wind speed detected by the window-mounted wind speed detector directly affects ventilation effectiveness. If the window is open but the outdoor wind speed is low or absent, natural ventilation alone will not be able to effectively improve indoor air quality. In this case, the fan speed should be increased to actively enhance air flow. Conversely, if the outdoor wind speed is strong, the fan speed can be appropriately reduced to leverage the natural wind for energy-saving operation while avoiding the discomfort caused by excessive airflow. Furthermore, even when the window is closed, the wind speed detector should still be turned on and the fan speed should be adjusted based on the current wind speed it detects. For example, by continuously monitoring wind speed changes at the window location, it can indirectly determine whether the room is completely sealed. This can also be combined with historical wind speed data to understand the fan's operating performance and adjust the fan speed accordingly. By acquiring real-time wind speed information at the window location, the fan can dynamically adjust its own speed, forming an intelligent control strategy that works in synergy with natural wind, not only improving ventilation efficiency but also optimizing energy utilization.

[0111] An embodiment of the present invention provides a fan control method that obtains spatial information about the room where the fan is located; the spatial information includes the fan's position, the window's position, and the window's open / close status. The method then controls the direction of the fan's air outlet based on the fan's position, the window's position, and the window's open / close status. This embodiment of the present invention determines the fan's current optimal air outlet direction by obtaining spatial information about the room where the fan is located, and automatically adjusts the fan's air outlet direction, thereby improving indoor air circulation efficiency while reducing reliance on manual operation.

[0112] It should be noted that for the sake of simplicity, the method embodiments are described as a series of actions. However, those skilled in the art should be aware that the embodiments of the present invention are not limited by the order of the actions described, because according to the embodiments of the present invention, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in this specification are all preferred embodiments, and the actions involved are not necessarily required by the embodiments of the present invention.

[0113] Reference Figure 5 , shows a structural block diagram of a fan control device provided by an embodiment of the present invention, which may specifically include the following modules:

[0114] The first acquisition module 301 is configured to acquire spatial information of the room where the fan is located; the spatial information includes: the location of the fan in the room, the location of the window, and the open / close status of the window;

[0115] The first control module 302 is configured to control the direction of the air outlet of the fan according to the position of the fan in the room, the position of the window, and the open / close status of the window.

[0116] In one embodiment, the spatial information further includes the position of a ceiling corner; and the determining module includes:

[0117] a first determining submodule, configured to determine whether the fan is close to the window according to the position of the fan and the position of the window;

[0118] A first control submodule is configured to control the air outlet of the fan to face away from the window when the fan is close to the window and the window is in an open state;

[0119] The second control submodule is used to control the air outlet of the fan to be positioned toward a corner of the ceiling when the fan is away from the window or the window is closed.

[0120] In one embodiment, the first determining submodule includes:

[0121] a first determining unit, configured to determine that the position of the fan in the room is close to the window when the distance between the window and the fan is less than or equal to a preset distance;

[0122] The second determining unit is configured to determine that the position of the fan in the room is away from the position of the window when the distance between the window and the fan is greater than a preset distance.

[0123] In one embodiment, the second control submodule includes:

[0124] a third determining unit, configured to determine a position of a ceiling corner closest to the fan;

[0125] The first control unit is used to control the direction of the air outlet of the fan so that the center of the fan blade is aligned with the corner of the ceiling closest to the fan.

[0126] In one embodiment, the fan is equipped with a radar, and the first acquisition module includes:

[0127] A first acquisition submodule is configured to acquire a time difference between a transmission signal of the radar at different locations in the room and a corresponding reception of a reflected signal, as well as an intensity of the reflected signal;

[0128] The second determining submodule is configured to determine the spatial information of the room according to the time difference and the strength of the reflected signal.

[0129] In one embodiment, the second determining submodule includes:

[0130] a fourth determining unit, configured to determine the walls and windows in the room and the switch status of the windows according to the strength of the reflected signals at different positions;

[0131] a fifth determining unit, configured to determine distances of different locations in the room relative to the radar based on time differences between transmitted signals and received corresponding reflected signals at different locations in the room;

[0132] A sixth determining unit is configured to determine the positions of the walls and windows in the room according to the distances of different positions of the room relative to the radar.

[0133] In one embodiment, the apparatus further comprises:

[0134] A second acquisition module is used to obtain the current wind speed at the window position;

[0135] The first determining module is configured to determine the wind speed of the fan according to the current wind speed.

[0136] As for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0137] An embodiment of the present invention provides a fan control method that obtains spatial information about the room where the fan is located; the spatial information includes the fan's position, the window's position, and the window's open / close status. The method then controls the direction of the fan's air outlet based on the fan's position, the window's position, and the window's open / close status. This embodiment of the present invention determines the fan's current optimal air outlet direction by obtaining spatial information about the room where the fan is located, and automatically adjusts the fan's air outlet direction, thereby improving indoor air circulation efficiency while reducing reliance on manual operation.

[0138] An embodiment of the present invention further provides a fan, comprising:

[0139] The present invention includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor. When the computer program is executed by the processor, each process of the above-mentioned fan control method embodiment is implemented and the same technical effect can be achieved. To avoid repetition, it will not be described here.

[0140] An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the various processes of the above-mentioned fan control method embodiment are implemented and the same technical effects can be achieved. To avoid repetition, they are not described here.

[0141] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0142] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, apparatus, or computer program products. Thus, embodiments of the present invention may take the form of a fully hardware embodiment, a fully software embodiment, or an embodiment combining software and hardware. Furthermore, embodiments of the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0143] The embodiments of the present invention are described with reference to the flowcharts and / or block diagrams of the methods, terminal devices (systems), and computer program products according to the embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of the processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal device generate instructions for implementing the process in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0144] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing terminal device to operate in a specific manner, so that the instructions stored in the computer readable memory produce a manufactured product including an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0145] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device so that a series of operating steps are executed on the computer or other programmable terminal device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable terminal device to implement the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0146] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they become aware of the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0147] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or terminal device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or terminal device that includes the element.

[0148] The fan control method and the fan control device provided by the present invention are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there may be changes in the specific implementation methods and application scopes. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. A fan control method, characterized in that: The method comprises: Acquire spatial information of the room where the fan is located; the spatial information includes: the location of the fan in the room, the location of the window, and the open / close status of the window; The direction of the air outlet of the fan is controlled according to the position of the fan in the room, the position of the window and the open / close state of the window.

2. The fan control method according to claim 1, wherein: The spatial information also includes the position of the ceiling corner; and controlling the direction of the fan outlet according to the position of the fan in the room, the position of the window, and the open / close state of the window, includes: determining whether the fan is close to the window according to the position of the fan and the position of the window; When the fan is close to the window and the window is in the open state, the air outlet of the fan is controlled to face away from the window; When the fan is away from the window, or the window is in a closed state, the air outlet of the fan is controlled to face the corner of the ceiling.

3. The fan control method according to claim 2, wherein: The determining, based on the position of the fan and the position of the window, whether the fan is close to the window includes: When the distance between the window and the fan is less than or equal to a preset distance, determining that the position of the fan in the room is close to the position of the window; When the distance between the window and the fan is greater than a preset distance, it is determined that the position of the fan in the room is away from the position of the window.

4. The fan control method according to claim 2, wherein: The controlling the position of the air outlet of the fan toward the corner of the ceiling includes: Determine the location of the ceiling corner closest to the fan; The air outlet of the fan is directed in a direction such that the center of the fan blade is aligned with the corner of the ceiling closest to the fan.

5. The fan control method according to claim 1, wherein: The fan is equipped with a radar, and obtaining spatial information of the room includes: Obtaining the time difference between the radar transmitting signals at different locations in the room and receiving corresponding reflected signals, as well as the strength of the reflected signals; The spatial information of the room is determined according to the time difference and the strength of the reflected signal.

6. The fan control method according to claim 5, wherein: The determining the spatial information of the room according to the time difference and the strength of the reflected signal includes: Determining the walls, windows, and switch states of the windows in the room according to the strength of the reflected signals at different positions; determining the distances of the different locations in the room relative to the radar based on time differences between transmitted signals and received corresponding reflected signals at different locations in the room; The positions of the walls and windows in the room are determined according to the distances of different positions of the room relative to the radar.

7. The fan control method according to claim 1, wherein: The method further comprises: Get the current wind speed at the window location; The wind speed of the fan is determined according to the current wind speed.

8. A fan control device, characterized in that: The device comprises: A first acquisition module is configured to acquire spatial information of a room where a fan is located; the spatial information includes: a position of the fan in the room, a position of a window, and an open / closed state of the window; The first control module is used to control the direction of the air outlet of the fan according to the position of the fan in the room, the position of the window and the open / close state of the window.

9. A fan, characterized in that: include: A processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein when the computer program is executed by the processor, the steps of the fan control method according to any one of claims 1 to 7 are implemented.

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

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