Control method and device for automatic tracking and purification of range hood, range hood and storage medium

Abstract

The invention discloses a control method for automatic tracking and purification of a range hood, a control device for automatic tracking and purification of the range hood, the range hood and a computer readable storage medium. According to the control method for automatic tracking and purification of the range hood, the range hood comprises a plurality of smoke sensors. The control method comprises the following steps: acquiring smoke concentration data detected by a plurality of smoke sensors; determining a smoke source position based on the smoke concentration data; and adjusting the air inlet orientation of the range hood based on the smoke source position. According to the control method for automatic tracking and purification of the range hood, the control device for automatic tracking and purification of the range hood, the range hood and the computer readable storage medium, the position of the smoke source is determined on the basis of the smoke concentration data detected by the multiple smoke sensors, and then the orientation of the air inlet of the range hood is adjusted on the basis of the position of the smoke source. The smoke source can be accurately positioned and automatically tracked, so that the purification effect of the range hood and the user experience are improved.

Description

Technical Field

[0001] The present application relates to the field of smart home control technology, and in particular to a control method for automatic tracking and purification of a range hood, a control device for automatic tracking and purification of a range hood, a range hood, and a computer-readable storage medium. Background Art

[0002] As people's demands for healthier eating and better indoor air quality increase, smoke pollution is becoming an increasingly prominent problem when cooking with methods like hot pot and barbecue at family gatherings or outdoor events. Traditional tabletop hood purifiers are typically fixed devices and lack the flexibility to adapt to different cooking scenarios and the dynamic changes in smoke sources. Summary of the Invention

[0003] The embodiments of the present application provide a control method for automatic tracking and purification of a range hood, a control device for automatic tracking and purification of a range hood, a range hood, and a computer-readable storage medium to solve at least one of the above-mentioned technical problems.

[0004] The control method for automatic tracking and purification of a range hood according to an embodiment of the present application includes multiple smoke sensors. The control method includes:

[0005] Obtain smoke concentration data detected by multiple smoke sensors;

[0006] Determine the location of the smoke source based on smoke concentration data;

[0007] Adjust the direction of the range hood's air inlet based on the location of the smoke source.

[0008] The control method for automatic tracking and purification of the range hood in the embodiment of the present application determines the location of the smoke source based on the smoke concentration data obtained by detection of multiple smoke sensors, and then adjusts the direction of the air inlet of the range hood based on the location of the smoke source. In this way, the precise positioning and automatic tracking of the smoke source can be achieved, thereby improving the purification effect of the range hood and user experience.

[0009] In some embodiments, the range hood further includes an infrared sensor and an ultrasonic sensor, and the control method further includes:

[0010] Acquire thermal imaging data detected by infrared sensors;

[0011] Obtain distance data detected by the ultrasonic sensor;

[0012] Acquire geometric structure data of the cooking platform;

[0013] Determine the location of smoke sources based on smoke concentration data, including:

[0014] Determine the location of the smoke source based on smoke concentration data, thermal imaging data, distance data, and geometric structure data.

[0015] In the above technical solution, based on the smoke concentration data obtained by multiple smoke sensors, combined with the thermal imaging data obtained by infrared sensors, the distance data obtained by ultrasonic sensors and the geometric structure data of the cooking platform, the location of the smoke source can be determined more accurately, and then the direction of the air inlet of the range hood can be adjusted to achieve efficient automatic tracking and purification, thereby improving the user experience.

[0016] In certain embodiments, determining the location of the smoke source based on smoke concentration data, thermal imaging data, distance data, and geometric structure data includes:

[0017] Establish a three-dimensional spatial coordinate system for the cooking area based on smoke concentration data, thermal imaging data, distance data, and geometric structure data;

[0018] Get the coordinates of the smoke source in the three-dimensional space coordinate system;

[0019] Adjust the direction of the range hood's air inlet based on the location of the smoke source, including:

[0020] Adjust the direction of the range hood's air inlet based on the smoke source coordinates.

[0021] This technical solution integrates multiple data sources, including smoke concentration data, thermal imaging data, distance data, and geometric structure data, to establish a three-dimensional spatial coordinate system for the cooking area. This allows the precise coordinates of the smoke source to be determined, and the range hood's air inlet orientation to be adjusted based on these coordinates. This allows the range hood to adapt to the dynamic changes in smoke sources during cooking, significantly improving the range hood's purification effectiveness, air quality, and user experience.

[0022] In some embodiments, the range hood further includes a drive assembly and an air inlet module. The drive assembly includes a motor and a pan / tilt head. The air inlet of the range hood is disposed on the air inlet module. Adjusting the direction of the air inlet of the range hood based on the location of the smoke source includes:

[0023] Based on the location of the smoke source, the motor is controlled to drive the pan / tilt to move, thereby driving the air intake module to move.

[0024] In the above technical solution, the driving component is used to adjust the air inlet module, thereby changing the direction of the air inlet of the range hood, which can achieve real-time, dynamic tracking of the smoke source and precise adjustment of the air inlet, effectively improving the smoke purification effect of the range hood, improving air quality, and enhancing user experience.

[0025] In some embodiments, the motor includes a first motor and a second motor, and the pan-tilt head includes a first bracket and a second bracket. Based on the location of the smoke source, the motor is controlled to drive the pan-tilt head to move, thereby driving the air intake module to move, including:

[0026] Based on the location of the smoke source, the first motor is controlled to drive the first bracket to rotate in the horizontal direction and / or the second motor is controlled to drive the second bracket to rotate in the vertical direction, so as to drive the air intake module to move.

[0027] In the above technical solution, based on the location of the smoke source, the dual-motor driven dual-bracket pan-tilt structure can realize flexible rotation of the air inlet module in the horizontal and / or vertical directions, thereby accurately adjusting the direction of the air inlet of the range hood.

[0028] In some embodiments, the range hood further includes an infrared sensor, and the control method further includes:

[0029] Acquire thermal imaging data detected by infrared sensors;

[0030] determining first obstacle information within a first predetermined range of the range hood based on the thermal imaging data;

[0031] Based on the first obstacle information, controlling the motor to drive the pan-tilt platform to move, thereby driving the air intake module to move;

[0032] and / or

[0033] The range hood also includes an ultrasonic sensor, and the control method further includes:

[0034] Obtain distance data detected by the ultrasonic sensor;

[0035] determining second obstacle information within a second predetermined range of the range hood based on the distance data;

[0036] Based on the second obstacle information, the motor is controlled to drive the pan-tilt platform to move, thereby driving the air intake module to move.

[0037] In the above technical solution, based on the thermal imaging data obtained by the infrared sensor and / or the distance data obtained by the ultrasonic sensor, accurate obstacle detection can be achieved, and the motor-driven pan-tilt movement can be intelligently controlled based on the detection results. At the same time, it has a safety protection function, which can effectively avoid harm to the human body during the rotation of the pan-tilt, and improve the safety and reliability of the range hood's process of adjusting the direction of the air inlet.

[0038] In some embodiments, the range hood further includes a fan, and the control method further includes:

[0039] Adjust the fan speed based on smoke concentration data;

[0040] Among them, the higher the smoke concentration, the higher the fan speed.

[0041] In the above technical solution, the fan speed is intelligently adjusted based on the real-time detected smoke concentration data, which can achieve efficient smoke purification and energy saving and noise reduction in different working modes, and improve the performance of the range hood and user experience.

[0042] The control device for automatic tracking and purification of a range hood in an embodiment of the present application includes a plurality of smoke sensors, and the control device includes:

[0043] An acquisition module is used to obtain smoke concentration data detected by multiple smoke sensors;

[0044] A determination module, for determining the location of the smoke source based on smoke concentration data;

[0045] The adjustment module is used to adjust the direction of the air inlet of the range hood based on the location of the smoke source.

[0046] The range hood of the embodiment of the present application includes one or more processors and a memory, and the memory stores a computer program. When the computer program is executed by the processor, the control method of automatic tracking and purification of the range hood of any of the above embodiments is implemented.

[0047] The computer-readable storage medium of the embodiment of the present application stores a computer program thereon, and when the program is executed by a processor, the control method for automatic tracking and purification of the range hood of any of the above embodiments is implemented.

[0048] The control method for automatic tracking and purification of range hoods, the control device for automatic tracking and purification of range hoods, the range hood and the computer-readable storage medium of the embodiments of the present application determine the location of the smoke source based on the smoke concentration data obtained by detection of multiple smoke sensors, and then adjust the direction of the air inlet of the range hood based on the location of the smoke source. In this way, accurate positioning and automatic tracking of the smoke source can be achieved, thereby improving the purification effect of the range hood and user experience.

[0049] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0051] Figure 1 It is a flowchart of a control method for automatic tracking and purification of a range hood in certain embodiments of the present application;

[0052] Figure 2 is a schematic diagram of a module of a range hood according to certain embodiments of the present application;

[0053] Figure 3 It is a flowchart of a control method for automatic tracking and purification of a range hood in certain embodiments of the present application;

[0054] Figure 4This is a schematic diagram of a module of a control device for automatic tracking and purification of a range hood in certain embodiments of the present application;

[0055] Figure 5 is a schematic diagram of a module of a range hood according to certain embodiments of the present application;

[0056] Figure 6 This is a schematic diagram of the connection status between a computer-readable storage medium and a processor in certain embodiments of the present application.

[0057] Description of reference numerals:

[0058] Range hood 100, main control board 10, smoke sensor 20, infrared sensor 30, ultrasonic sensor 40, drive assembly 50, air intake module 60, fan 70, processor 110, memory 120, range hood automatic tracking and purification control device 200, acquisition module 210, determination module 220, adjustment module 230, computer-readable storage medium 300, computer program 310, processor 320. DETAILED DESCRIPTION

[0059] The following further describes the embodiments of the present application in conjunction with the accompanying drawings. Throughout the accompanying drawings, the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions. Furthermore, the embodiments of the present application described below in conjunction with the accompanying drawings are exemplary and are intended only to explain the embodiments of the present application and are not to be construed as limiting the present application.

[0060] See also Figure 1 and Figure 2 The embodiment of the present application provides a control method for automatic tracking purification of a range hood. The range hood hood 100 includes a plurality of smoke sensors 20. The control method includes:

[0061] S10: Acquiring smoke concentration data detected by multiple smoke sensors 20;

[0062] S20: determining the location of the smoke source based on the smoke concentration data;

[0063] S30: Adjust the direction of the air inlet of the range hood 100 based on the location of the smoke source.

[0064] The control method for automatic tracking and purification of the range hood in the embodiment of the present application determines the location of the smoke source based on the smoke concentration data detected by multiple smoke sensors 20, and then adjusts the direction of the air inlet of the range hood 100 based on the location of the smoke source. In this way, the precise positioning and automatic tracking of the smoke source can be achieved, thereby improving the purification effect of the range hood 100 and the user experience.

[0065] Specifically, see Figure 2The range hood 100 may be a desktop range hood. The range hood 100 includes a main control board 10 and a plurality of smoke sensors 20.

[0066] A plurality of smoke sensors 20 constitute a sensor group. Each smoke sensor 20 can detect the smoke concentration data in the surrounding air in real time. In one example, the smoke sensor 20 can adopt a PM2.5 sensor. In this case, the smoke concentration data is the PM2.5 concentration data. Taking four PM2.5 sensors as an example, the four PM2.5 sensors can be distributed in a ring shape and installed at different positions on the side of the range hood 100. Assuming that the range hood 100 is cylindrical as a whole, a PM2.5 sensor is set at every 90° along the circumference of the range hood 100. In the embodiment of the present application, the smoke sensor 20 is preferably a PM2.5 sensor with high detection accuracy, for example, the detection accuracy reaches ±5μg / m 3 , to detect the smoke concentration in the surrounding air in real time and accurately.

[0067] The main control board 10 is the core component that enables automatic tracking and purification control of the range hood 100. It connects to each smoke sensor 20. Equipped with powerful data processing and control capabilities, the main control board 10 receives smoke concentration data from each smoke sensor 20 and analyzes and processes it based on pre-set algorithms and programs, ultimately determining the smoke source and adjusting the air inlet orientation of the range hood 100.

[0068] The working process of the control method for automatic tracking and purification of the range hood in the embodiment of the present application is explained below with reference to specific examples.

[0069] After the range hood 100 is powered on, the four PM2.5 sensors arranged in a ring begin operating synchronously, measuring the smoke concentration in the surrounding air at preset intervals (e.g., every 100 milliseconds). Each PM2.5 sensor transmits the detected smoke concentration data to the main control board 10 in the form of an electrical signal. The main control board 10 receives and stores this smoke concentration data from the different PM2.5 sensors in real time for subsequent determination of the smoke source.

[0070] After receiving smoke concentration data from each PM2.5 sensor, the main control board 10 applies a specific algorithm to determine the location of the smoke source. For example, the main control board 10 can compare the smoke concentration data detected by the four PM2.5 sensors to determine the location of the smoke source. Since smoke concentration generally increases closer to the smoke source during diffusion, by comparing the concentration values ​​detected by each PM2.5 sensor, the approximate direction of the smoke source relative to the range hood 100 can be determined. For example, if the concentration detected by a PM2.5 sensor at a certain location is significantly higher than that detected by PM2.5 sensors at other locations, it can be inferred that the smoke source is likely located in the direction corresponding to that location.

[0071] After determining the location of the smoke source, the main control board 10 adjusts the orientation of the range hood 100's air inlet based on this location information. The main control board 10 calculates the required angle for the air inlet adjustment based on the smoke source's location and the range hood 100's current air inlet orientation. For example, if the range hood 100's current air inlet orientation is straight ahead and the smoke source is located 45° to the right, the main control board 10 calculates that the air inlet needs to be rotated 45° to the right to align the range hood 100's air inlet with the smoke source.

[0072] During the cooking process, the smoke source may change due to factors such as the movement of the flame position. Therefore, the main control board 10 can continuously obtain smoke concentration data detected by the smoke sensor 20 at a preset time interval (for example, every 100ms) and repeat the above steps of determining the smoke source location and adjusting the direction of the air inlet to achieve real-time and dynamic tracking of the smoke source, ensuring that the air inlet of the range hood 100 is always aligned with the smoke source, thereby improving the purification effect.

[0073] The control method for automatic tracking and purification of range hoods according to the embodiment of the present application has at least the following advantages:

[0074] (1) Accurately locate the smoke source and adapt to different cooking scenarios: By deploying multiple smoke sensors 20, smoke concentration data can be comprehensively detected from different directions and angles, thereby accurately determining the location of the smoke source. For example, when a family is having a hot pot at a dinner party, the hot pot is placed in the middle of the table, and the smoke will spread in all directions. Multiple smoke sensors 20 can comprehensively detect smoke concentration data from different directions and angles, covering all areas around the table where smoke may be generated, providing comprehensive and rich data support for accurately determining the smoke source.

[0075] (2) Dynamically track the smoke source and adapt to changes in the source: By monitoring the smoke concentration data in real time and continuously updating the smoke source position, the changes in the smoke source can be captured in time and the direction of the air inlet can be adjusted accordingly. It can be understood that during the cooking process, the position of the smoke source may change dynamically. For example, when cooking using a barbecue method, the flame position will move as the ingredients are turned over, causing the smoke source to change accordingly. The smoke sensor 20 of the embodiment of the present application can detect the smoke concentration data in real time and continuously transmit the data to the main control board 10. Based on the newly received data, the main control board 10 uses a dynamic tracking algorithm to update the judgment of the smoke source position in real time and capture the changes in the smoke source in time. The main control board 10 determines the updated smoke source position and adjusts the direction of the air inlet of the range hood 100 so that it is always aimed at the smoke source. For example, when the flame position moves toward the edge of the table, the air inlet will also adjust its direction accordingly to maintain accurate tracking of the smoke source and continuously and effectively purify the smoke.

[0076] (3) Improve portability and flexibility to meet user needs: A smoke sensor 20 is added to the structure, which is suitable for the design of a desktop range hood. The overall structure is compact and the size is small. It can be placed on the desktop for use and is easy to carry.

[0077] See also Figure 2 and Figure 3 In some embodiments, the range hood 100 further includes an infrared sensor 30 and an ultrasonic sensor 40. The control method further includes:

[0078] S40: Acquire thermal imaging data detected by the infrared sensor 30;

[0079] S50: Acquire distance data detected by the ultrasonic sensor 40;

[0080] S60: Acquire geometric structure data of the cooking operation platform;

[0081] Determining the smoke source location based on the smoke concentration data (i.e., S20) includes:

[0082] S21: Determine the location of the smoke source based on the smoke concentration data, thermal imaging data, distance data, and geometric structure data.

[0083] The embodiment of the present application, based on the smoke concentration data detected by multiple smoke sensors 20, combined with the thermal imaging data detected by the infrared sensor 30, the distance data detected by the ultrasonic sensor 40 and the geometric structure data of the cooking work platform, can more accurately determine the location of the smoke source, and then adjust the direction of the air inlet of the range hood 100, to achieve efficient automatic tracking and purification, and enhance the user experience.

[0084] Specifically, see Figure 2The range hood 100 further includes an infrared sensor 30 and an ultrasonic sensor 40 .

[0085] The infrared sensor 30 can be an infrared thermal imager with a resolution of 80×60 pixels. The infrared sensor 30 can acquire real-time thermal imaging data of the surrounding environment. By analyzing the temperature distribution of different areas in the thermal imaging data, it can assist in determining the location of the smoke source, as smoke sources are typically associated with higher temperatures.

[0086] Two ultrasonic sensors 40 can be installed, one on each side of the air inlet of the range hood 100. The ultrasonic sensor 40 has a range of 0.2-1m. The ultrasonic sensor 40 measures the distance to surrounding objects by transmitting and receiving ultrasonic waves. The resulting distance data can be used to help determine the position of the smoke source relative to the range hood 100.

[0087] The main control board 10 is connected to the infrared sensor 30 and the ultrasonic sensor 40. In addition to the aforementioned smoke concentration data, the main control board 10 also receives thermal imaging data from the infrared sensor 30 and distance data from the ultrasonic sensor 40. Combined with the geometric structure data of the cooking platform, the main control board 10 analyzes and processes this data according to pre-set algorithms and programs to ultimately determine the smoke source and adjust the air inlet direction of the range hood 100.

[0088] The following describes the working process of the automatic tracking and purification control method for range hoods according to the embodiment of the present application with reference to specific examples. The process of obtaining smoke concentration data detected by the multiple smoke sensors 20 can be referred to the aforementioned embodiment and will not be repeated here.

[0089] After the range hood 100 is started, the infrared sensor 30 continuously scans the surrounding environment, obtains thermal imaging data, and transmits it to the main control board 10. The main control board 10 pre-processes the thermal imaging data, such as denoising and enhancement, to improve data quality.

[0090] The two ultrasonic sensors 40 continuously transmit and receive ultrasonic waves, measure the distance to surrounding objects, and transmit the distance data in real time to the main control board 10. The main control board 10 performs a comprehensive analysis on the distance data transmitted by the two ultrasonic sensors 40 to more accurately determine the position information of surrounding objects.

[0091] The geometric structure data (such as the size and shape of the tabletop) of the cooking platform (such as the cooking table) can be pre-stored in the memory of the main control board 10. When needed, the main control board 10 reads this data from the memory for subsequent determination of the smoke source location.

[0092] After acquiring smoke density data, thermal imaging data, distance data, and geometric structure data of the cooking platform, the main control board 10 uses a specific algorithm to determine the location of the smoke source.

[0093] Similar to the aforementioned embodiment, the main control board 10 can compare the concentration values ​​of the smoke concentration data detected by the four PM2.5 sensors to preliminarily determine the location of the smoke source, which will not be further explained here.

[0094] The main control board 10 can also analyze the thermal imaging data captured by the infrared sensor 30 to identify areas with higher temperatures. Based on pre-set temperature thresholds, it can determine which areas are likely to be the source of the smoke. Furthermore, based on the temperature gradient in the thermal imaging data, the approximate location of the smoke source can be further determined.

[0095] The main control board 10 can also determine the relative position of surrounding objects and the range hood 100 based on the distance data measured by the two ultrasonic sensors 40. By analyzing the changes in the distance data, it can help determine whether the smoke source is in a specific direction and its distance from the range hood 100.

[0096] The main control board 10 uses the aforementioned smoke concentration data, thermal imaging data, and distance data, combined with the geometric structure data of the cooking platform, to make a comprehensive assessment and accurately locate the smoke source. For example, by combining the direction initially determined by smoke concentration, the high-temperature area determined by thermal imaging, and the relative position measured by distance data, while also considering the size and shape of the cooking table itself, the smoke source can be accurately located.

[0097] In certain embodiments, after the range hood 100 is started, an initialization operation may be performed before the smoke sensors 20 detect smoke concentration data, the infrared sensor 30 detects thermal imaging data, and the ultrasonic sensor 40 detects distance data to calibrate each sensor. The specific calibration process is as follows:

[0098] Smoke sensor 20 calibration: Place the range hood 100 in a smoke-free environment. The main control board 10 controls the four PM2.5 sensors to perform multiple measurements, taking the average value as the ambient background concentration. In subsequent tests, the ambient background concentration value is subtracted from the real-time smoke concentration data to eliminate the influence of environmental factors on the test results.

[0099] Infrared sensor 30 calibration: In an environment free of heat interference, the infrared thermal imager is calibrated, adjusting its parameters to accurately reflect the surrounding temperature distribution. Furthermore, appropriate temperature thresholds are set based on the actual temperature range of the cooking platform for subsequent analysis of thermal imaging data.

[0100] Calibration of ultrasonic sensor 40: Place the range hood 100 in front of an obstacle at a known distance, and let the two ultrasonic sensors 40 measure the distance to the obstacle respectively. The main control board 10 calibrates the measurement parameters of the ultrasonic sensor 40 based on the difference between the measurement result and the actual distance to ensure the accuracy of its distance measurement.

[0101] In certain embodiments, determining the location of the smoke source based on smoke concentration data, thermal imaging data, distance data, and geometric structure data includes:

[0102] Establish a three-dimensional spatial coordinate system for the cooking area based on smoke concentration data, thermal imaging data, distance data, and geometric structure data;

[0103] Get the coordinates of the smoke source in the three-dimensional space coordinate system;

[0104] Adjusting the direction of the air inlet of the range hood 100 based on the location of the smoke source includes:

[0105] The direction of the air inlet of the range hood 100 is adjusted based on the coordinates of the smoke source.

[0106] Specifically, after obtaining the aforementioned smoke concentration data, thermal imaging data, distance data, and geometric structure data, algorithms such as triangulation and spatial coordinate transformation can be used to establish a three-dimensional spatial coordinate system for the cooking area. In one example, the three-dimensional spatial coordinate system can be established using the cooking surface of the cooking work platform as a reference plane. First, a specific corner of the surface (e.g., the upper left corner) is selected as the coordinate origin O(0, 0, 0). Then, two adjacent edges of the surface are used as the X-axis and Y-axis, respectively, and the direction perpendicular to the surface upward is the positive Z-axis. Finally, the aforementioned smoke concentration data, thermal imaging data, distance data, and geometric structure data are used to determine the coordinates of key points in the three-dimensional spatial coordinate system. Of course, in other examples, the three-dimensional tabletop coordinate system can be established without being limited to the cooking surface as the reference plane.

[0107] The main control board 10 updates the concentration field information in the three-dimensional spatial coordinate system based on the latest acquired smoke concentration data at preset intervals (e.g., every 100 milliseconds). The concentration field reflects the smoke concentration distribution at different locations within the cooking area. By continuously updating the concentration field, the diffusion and dynamic changes of the smoke can be monitored in real time.

[0108] When adjusting the air inlet orientation of the range hood 100, the main control board 10 obtains the smoke source coordinates (Xs, Ys, Zs) from the three-dimensional spatial coordinate system and adjusts the air inlet orientation of the range hood 100 based on the smoke source coordinates (Xs, Ys, Zs). In one example, the main control board 10 may first determine the direction vector of the smoke source relative to the range hood 100 based on the smoke source coordinates. Then, based on the current air inlet orientation vector of the range hood 100, the main control board 100 calculates the angle between the two vectors. This angle is the angle at which the air inlet of the range hood 100 needs to be adjusted.

[0109] By integrating multiple data sources, including smoke concentration data, thermal imaging data, distance data, and geometric structure data, this embodiment establishes a three-dimensional spatial coordinate system for the cooking area. This allows for precise determination of the smoke source coordinates and, based on these coordinates, adjustment of the air inlet orientation of the range hood 100. This embodiment effectively adapts to the dynamic changes in smoke sources during cooking, significantly enhancing the purification effectiveness of the range hood 100, improving air quality, and enhancing the user experience.

[0110] See also Figure 2 In some embodiments, the range hood 100 further includes a drive assembly 50 and an air inlet module 60. The drive assembly 50 includes a motor and a pan / tilt unit. The air inlet of the range hood 100 is disposed on the air inlet module 60. Adjusting the direction of the air inlet of the range hood 100 based on the location of the smoke source includes:

[0111] Based on the location of the smoke source, the motor is controlled to drive the pan / tilt platform to move, thereby driving the air intake module 60 to move.

[0112] Specifically, see Figure 2 The range hood 100 further includes a driving assembly 50 and an air intake module 60 .

[0113] The drive assembly 50 consists of a motor and a pan / tilt head. A stepper motor can be used as the motor. Stepper motors offer advantages such as high positioning accuracy and ease of control, enabling precise control of the rotation angle. The pan / tilt head can be constructed of high-strength, lightweight materials to ensure excellent stability and rotational flexibility. The pan / tilt head is connected to the motor and, driven by the motor, can achieve multi-angle rotation.

[0114] The air inlet of the range hood 100 is set on the air inlet module 60, and the air inlet module 60 is fixedly connected to the platform. When the platform is driven by the motor to rotate, it can drive the air inlet module 60 to move together, thereby changing the direction of the air inlet of the range hood 100.

[0115] After determining the smoke source, the main control board 10 calculates the required angle for adjusting the range hood 100's air inlet based on the smoke source location. Based on this calculated angle, it then sends a corresponding control signal to the motor. Upon receiving the control signal, the motor rotates incrementally according to the set step angle, driving the pan / tilt table, which in turn rotates the air inlet module 60. This rotates the range hood 100's air inlet by the calculated angle, ensuring it aligns with the smoke source and achieving efficient, automatic, and targeted purification.

[0116] During adjustment of the range hood 100's air inlet orientation, the main control board 10 monitors the inlet's rotational state in real time to ensure it accurately and smoothly reaches the target orientation. Furthermore, to ensure timely and accurate adjustments, the inlet's response time can be set to less than 0.3 seconds. This means the time from when the main control board 10 issues a control signal to when the air inlet actually reaches the target orientation should not exceed 0.3 seconds.

[0117] The embodiment of the present application is based on the location of the smoke source, and uses the drive component 50 to adjust the air inlet module 60, thereby changing the direction of the air inlet of the range hood 100. It can achieve real-time, dynamic tracking of the smoke source and precise adjustment of the air inlet, effectively improving the smoke purification effect of the range hood 100, improving air quality, and enhancing user experience.

[0118] In some embodiments, the motor includes a first motor and a second motor. The pan-tilt platform includes a first bracket and a second bracket. Based on the location of the smoke source, controlling the motor to drive the pan-tilt platform to move, thereby driving the air intake module 60 to move, includes:

[0119] Based on the location of the smoke source, the first motor is controlled to drive the first bracket to rotate in the horizontal direction and / or the second motor is controlled to drive the second bracket to rotate in the vertical direction, so as to drive the air intake module 60 to move.

[0120] The embodiment of the present application is based on the location of the smoke source and uses a dual-motor driven dual-bracket pan-tilt structure to achieve flexible rotation of the air inlet module 60 in the horizontal and / or vertical directions, thereby accurately adjusting the direction of the air inlet of the range hood 100.

[0121] Specifically, the motor includes a first motor and a second motor. The first motor and the second motor can be stepper motors. The first motor and the second motor are installed orthogonally to realize the movement of the air inlet module 60 in the horizontal direction and the vertical direction respectively.

[0122] The gimbal includes a first bracket and a second bracket. These brackets can be U-shaped or L-shaped. The first bracket is connected to a first motor and can rotate horizontally under the drive of the first motor. The second bracket is connected to the first bracket and, in turn, to a second motor and can rotate vertically under the drive of the second motor. This gives the gimbal two independent degrees of freedom, allowing it to rotate horizontally and vertically within a certain range. For example, the rotation range can be ±90° in each direction.

[0123] The air intake module 60 can be fixedly connected to the first bracket or the second bracket. When the first bracket rotates horizontally under the drive of the first motor, it can drive the air intake module 60 to rotate horizontally. When the second bracket rotates vertically under the drive of the second motor, it can drive the air intake module 60 to rotate vertically, thereby changing the direction of the air inlet of the range hood 100.

[0124] Based on the location of the smoke source, the main control board 100 calculates the required adjustment angle for the range hood 100's air inlet, including the required horizontal and / or vertical angles. Based on the calculated horizontal angle, the main control board 10 sends a corresponding first control signal to the first motor. Upon receiving the first control signal, the first motor rotates gradually according to a set step angle, driving the first bracket to rotate horizontally, thereby driving the air inlet module 60 to rotate with it, causing the range hood 100's air inlet to rotate by the calculated horizontal angle. Furthermore, based on the calculated vertical angle, the main control board 100 sends a corresponding second control signal to the second motor. Upon receiving the second control signal, the second motor rotates gradually according to a set step angle, driving the second bracket to rotate vertically, thereby driving the air inlet module 60 to rotate with it, causing the range hood 100's air inlet to rotate by the calculated vertical angle. In this way, through horizontal and / or vertical adjustments, the air inlet is ensured to be aligned with the smoke source, achieving efficient, automatic, and targeted purification.

[0125] See also Figure 2 In some embodiments, the range hood 100 further includes an infrared sensor 30. The control method further includes:

[0126] Acquiring thermal imaging data detected by the infrared sensor 30;

[0127] Determining first obstacle information within a first predetermined range of the range hood 100 based on the thermal imaging data;

[0128] Based on the first obstacle information, the motor is controlled to drive the pan-tilt platform to move, thereby driving the air intake module 60 to move.

[0129] And / or, the range hood 100 further includes an ultrasonic sensor 40. The control method further includes:

[0130] Acquiring distance data detected by the ultrasonic sensor 40;

[0131] Determining second obstacle information within a second predetermined range of the range hood 100 based on the distance data;

[0132] Based on the second obstacle information, the motor is controlled to drive the pan-tilt platform to move, thereby driving the air intake module 60 to move.

[0133] Specifically, see Figure 2 The range hood 100 further includes an infrared sensor 30 and an ultrasonic sensor 40. The process of obtaining the thermal imaging data detected by the infrared sensor 30 and the distance data detected by the ultrasonic sensor 40 can refer to the above embodiment and will not be repeated here.

[0134] On the one hand, the main control board 10 can determine information about a first obstacle within a first predetermined range of the range hood 100 based on the thermal imaging data. The first predetermined range can be set according to the actual usage scenario and needs of the range hood 100, for example, it can be a hemispherical area within a first radius centered on the range hood 100.

[0135] Because the human body (such as an arm) emits infrared radiation of a specific intensity, its temperature differs from that of the surrounding environment, resulting in distinct features in the thermal image. By setting an appropriate temperature threshold, areas in the thermal image with temperatures above the threshold can be identified. Image recognition algorithms (such as edge detection and region segmentation) can then be used to determine the shape, size, and location of these areas. This allows the determination of information about the first obstacle within the first predetermined range of the range hood 100, including the obstacle's type (preliminarily determining whether it is a human body part), location coordinates, and size.

[0136] While the main control board 10 controls the motor to drive the pan-tilt platform (PTZ) to move the air intake module 60 based on the location of the smoke source, the main control board 10 can also determine, based on the first obstacle information, whether an obstacle is located in the pan-tilt platform's path, thereby determining whether there is a collision risk. If there is a collision risk, the main control board 10 can send a pause command to the motor, causing it to stop driving the pan-tilt platform. Alternatively, the main control board 10 can replan the pan-tilt platform's path based on the first obstacle information and send new control commands to the motor, allowing the pan-tilt platform to continue moving around the obstacle, thereby driving the air intake module 60 to continue moving, thereby adjusting the direction of the range hood 100's air inlet.

[0137] On the other hand, the main control board 10 can determine information about a second obstacle within a second predetermined range of the range hood 100 based on the distance data. The second predetermined range can also be set according to the actual usage scenario and needs of the range hood 100, for example, it can be a hemispherical area within the second radius centered on the range hood 100.

[0138] The main control board 10 analyzes and processes the received distance data and, by setting an appropriate distance threshold, can identify whether an obstacle exists in a certain area. Simultaneously, based on the emission angle and detection range of the ultrasonic sensor 40, the location coordinates and approximate size of the obstacle can be determined to obtain secondary obstacle information.

[0139] Similar to the first obstacle information, when the main control board 10 controls the motor to drive the pan-tilt platform to move based on the location of the smoke source to drive the air intake module 60, the main control board 10 can also determine whether the obstacle is located in the pan-tilt platform's movement path based on the second obstacle information, thereby determining whether there is a collision risk. If there is a collision risk, the main control board 10 can send a pause command to the motor to stop driving the pan-tilt platform. Alternatively, the main control board 10 can also replan the pan-tilt platform's movement path based on the second obstacle information and send new control commands to the motor to enable the pan-tilt platform to continue moving around the obstacle, thereby driving the air intake module 60 to continue moving, thereby adjusting the direction of the range hood 100's air inlet.

[0140] The embodiment of the present application is based on the thermal imaging data obtained by the infrared sensor 30 and / or the distance data obtained by the ultrasonic sensor 40, which can achieve accurate obstacle detection and intelligently control the motor to drive the pan-tilt movement based on the detection results. At the same time, it has a safety protection function, which can effectively avoid harm to the human body during the rotation of the pan-tilt, and improve the safety and reliability of the process of adjusting the direction of the air inlet of the range hood 100.

[0141] See also Figure 2 In some embodiments, the range hood 100 further includes a fan 70. The control method further includes:

[0142] adjusting the speed of the fan 70 based on the smoke concentration data;

[0143] The higher the smoke concentration, the higher the rotation speed of the fan 70.

[0144] Understandably, the fan speed in traditional range hoods is typically fixed or requires manual adjustment, and cannot automatically adjust dynamically based on the actual smoke concentration generated by cooking. During the cooking process, if the fan continues to run at a high speed when smoke concentration is low, it will not only waste energy but also generate a lot of noise. If the fan speed is insufficient when smoke concentration is high, it will not be able to effectively purify the smoke in a timely manner, affecting air quality.

[0145] The embodiment of the present application intelligently adjusts the rotation speed of the fan 70 based on the real-time detected smoke concentration data, which can achieve efficient smoke purification and energy saving and noise reduction in different working modes, and improve the performance and user experience of the range hood 100.

[0146] Specifically, see Figure 2 The range hood 100 also includes a fan 70. The fan 70 can be a centrifugal fan. The centrifugal fan has the advantages of large air volume, high pressure, compact structure, etc., which can meet the smoke purification needs of the range hood 100 in different working modes. In one example, the maximum air volume of the fan 70 can be 5m 3 The speed adjustment granularity of the fan 70 can be 1% to achieve fine adjustment of the speed of the fan 70.

[0147] The fan 70 is connected to the main control board 10. The main control board 10 can adjust the speed of the fan 70 based on the smoke concentration data. The higher the smoke concentration, the higher the speed of the fan 70. For example, when the PM2.5 concentration is greater than 100μg / m 3 When the air quality is poor, it can be judged that the strong mode needs to be activated. At this time, the main control board 10 sends a control signal to the fan 70 to adjust the speed of the fan 70 to no less than 60% (corresponding to an air volume of ≥3m 3 / min) to ensure that smoke can be quickly and effectively purified and air quality improved. When the PM2.5 concentration is less than 35μg / m 3 When the air quality is good, the main control board 10 sends a control signal to the fan 70 to adjust the speed of the fan 70 to no more than 20% (corresponding to an air volume of ≤1m 3 / min) to reduce the noise generated by the operation of the fan 70 and save energy.

[0148] It should be noted that, in the aforementioned embodiment, the main control board 10 obtains smoke concentration data detected by multiple smoke sensors 20. Therefore, when adjusting the speed of the fan 70 based on the smoke concentration data, the main control board 10 can first determine a comprehensive smoke concentration data based on the smoke concentration data detected by the multiple smoke sensors 20, and then adjust the speed of the fan 70 based on the comprehensive smoke concentration data. In one example, the comprehensive smoke concentration data can be the average of the smoke concentration data detected by the multiple smoke sensors 20. Of course, in other examples, the comprehensive smoke concentration data can also be determined using other methods based on the smoke concentration data detected by the multiple smoke sensors 20, which is not limited here.

[0149] Statistical analysis shows that compared with traditional range hood control solutions, the control method for automatic tracking and purification of range hoods implemented in the present application has the following advantages: the tracking error of mobile pollution sources is ≤2cm; the purification response time is shortened by more than 60%; and the overall energy consumption is reduced by about 30%.

[0150] See also Figure 2 and Figure 4 The present application also provides a control device 200 for automatic tracking and purification of a range hood. The range hood 100 includes multiple smoke sensors 20. The control device 200 includes an acquisition module 210, a determination module 220, and an adjustment module 230. The acquisition module 210 is used to acquire smoke concentration data detected by the multiple smoke sensors 20. The determination module 220 is used to determine the location of the smoke source based on the smoke concentration data. The adjustment module 230 is used to adjust the direction of the air inlet of the range hood 100 based on the location of the smoke source.

[0151] The control device 200 for automatic tracking and purification of the range hood in the embodiment of the present application determines the location of the smoke source based on the smoke concentration data detected by multiple smoke sensors 20, and then adjusts the direction of the air inlet of the range hood 100 based on the location of the smoke source. In this way, the precise positioning and automatic tracking of the smoke source can be achieved, thereby improving the purification effect of the range hood 100 and the user experience.

[0152] In certain embodiments, the range hood 100 further includes an infrared sensor 30 and an ultrasonic sensor 40. The acquisition module 210 is further configured to: acquire thermal imaging data detected by the infrared sensor 30; acquire distance data detected by the ultrasonic sensor 40; and acquire geometric data of the cooking platform. The determination module 220 is specifically configured to determine the location of the smoke source based on the smoke concentration data, thermal imaging data, distance data, and geometric data.

[0153] In the above technical solution, based on the smoke concentration data detected by multiple smoke sensors 20, combined with the thermal imaging data detected by the infrared sensor 30, the distance data detected by the ultrasonic sensor 40 and the geometric structure data of the cooking work platform, the location of the smoke source can be determined more accurately, and then the direction of the air inlet of the range hood 100 can be adjusted to achieve efficient automatic tracking and purification and enhance user experience.

[0154] In certain embodiments, the determination module 220 is specifically configured to establish a three-dimensional spatial coordinate system for the cooking area based on smoke concentration data, thermal imaging data, distance data, and geometric structure data; and obtain the coordinates of the smoke source within the three-dimensional spatial coordinate system. The adjustment module 230 is specifically configured to adjust the direction of the air inlet of the range hood 100 based on the smoke source coordinates.

[0155] In this technical solution, by integrating multiple data sources, including smoke concentration data, thermal imaging data, distance data, and geometric structure data, a three-dimensional spatial coordinate system for the cooking area is established. This allows the coordinates of the smoke source to be accurately determined, and the air inlet orientation of the range hood 100 is adjusted based on these coordinates. This effectively adapts to the dynamic changes in smoke sources during cooking, significantly improving the purification effect of the range hood 100, enhancing air quality, and enhancing the user experience.

[0156] In certain embodiments, the range hood 100 further includes a drive assembly 50 and an air intake module 60. The drive assembly 50 includes a motor and a pan / tilt control unit. The air intake of the range hood 100 is located in the air intake module 60. The adjustment module 230 is specifically configured to control the motor-driven pan / tilt control unit to move the air intake module 60 based on the location of the smoke source.

[0157] In the above technical solution, the driving component 50 is used to adjust the air inlet module 60, thereby changing the direction of the air inlet of the range hood 100, so as to achieve real-time and dynamic tracking of the smoke source and precise adjustment of the air inlet, effectively improving the smoke purification effect of the range hood 100, improving the air quality, and enhancing the user experience.

[0158] In certain embodiments, the motor includes a first motor and a second motor. The pan-tilt head includes a first bracket and a second bracket. The adjustment module 230 is specifically configured to control the first motor to drive the first bracket to rotate horizontally and / or control the second motor to drive the second bracket to rotate vertically based on the location of the smoke source, thereby driving the air intake module 60 to move.

[0159] In the above technical solution, based on the location of the smoke source, a dual-motor driven dual-bracket pan-tilt structure is used to achieve flexible rotation of the air inlet module 60 in the horizontal and / or vertical directions, thereby accurately adjusting the direction of the air inlet of the range hood 100.

[0160] In some embodiments, the range hood 100 further includes an infrared sensor 30. The acquisition module 210 is further used to acquire thermal imaging data detected by the infrared sensor 30. The determination module 220 is further used to determine first obstacle information within a first predetermined range of the range hood 100 based on the thermal imaging data. The adjustment module 230 is further used to control the motor-driven pan-tilt movement based on the first obstacle information to drive the air intake module 60 to move. And / or, the range hood 100 further includes an ultrasonic sensor 40. The acquisition module 210 is further used to acquire distance data detected by the ultrasonic sensor 40. The determination module 220 is further used to determine second obstacle information within a second predetermined range of the range hood 100 based on the distance data. The adjustment module 230 is further used to control the motor-driven pan-tilt movement based on the second obstacle information to drive the air intake module 60 to move.

[0161] In the above technical solution, based on the thermal imaging data obtained by the infrared sensor 30 and / or the distance data obtained by the ultrasonic sensor 40, accurate obstacle detection can be achieved, and the motor-driven pan-tilt movement can be intelligently controlled based on the detection results. At the same time, it has a safety protection function, which can effectively avoid harm to the human body during the rotation of the pan-tilt, and improve the safety and reliability of the process of adjusting the direction of the air inlet of the range hood 100.

[0162] In some embodiments, the range hood 100 further includes a fan 70. The adjustment module 230 is further configured to adjust the rotation speed of the fan 70 based on the smoke concentration data. The higher the smoke concentration, the higher the rotation speed of the fan 70.

[0163] In the above technical solution, based on the real-time detected smoke concentration data, the speed of the fan 70 is intelligently adjusted, which can achieve efficient smoke purification and energy saving and noise reduction in different working modes, and improve the performance and user experience of the range hood 100.

[0164] It should be noted that the explanation of the control method for automatic tracking and purification of the range hood in the aforementioned embodiment is also applicable to the control device 200 for automatic tracking and purification of the range hood in the embodiment of the present application, and will not be elaborated here.

[0165] See also Figure 5 The range hood 100 of the embodiment of the present application includes one or more processors 110 and a memory 120, wherein the memory 120 stores a computer program. When the computer program is executed by the processor 110, the control method for automatic tracking and purification of the range hood in any of the above embodiments is implemented.

[0166] For example, when the computer program is executed by the processor 110, the following control method for automatic tracking and purification of the range hood is implemented:

[0167] S10: Acquiring smoke concentration data detected by multiple smoke sensors 20;

[0168] S20: determining the location of the smoke source based on the smoke concentration data;

[0169] S30: Adjust the direction of the air inlet of the range hood 100 based on the location of the smoke source.

[0170] For another example, when the computer program is executed by the processor 110, the following control method for automatic tracking and purification of the range hood is implemented:

[0171] S40: Acquire thermal imaging data detected by the infrared sensor 30;

[0172] S50: Acquire distance data detected by the ultrasonic sensor 40;

[0173] S60: Acquire geometric structure data of the cooking operation platform;

[0174] S21: Determine the location of the smoke source based on the smoke concentration data, thermal imaging data, distance data, and geometric structure data.

[0175] It should be noted that the explanation of the control method for automatic tracking and purification of the range hood in the aforementioned embodiment is also applicable to the range hood 100 of the embodiment of the present application and will not be elaborated here.

[0176] See also Figure 6 The computer-readable storage medium 300 of the embodiment of the present application stores a computer program 310. When the program is executed by the processor 320, the control method for automatic tracking and purification of the range hood in any of the above embodiments is implemented.

[0177] For example, when the program is executed by the processor 320, the following control method for automatic tracking and purification of the range hood is implemented:

[0178] S10: Acquiring smoke concentration data detected by multiple smoke sensors 20;

[0179] S20: determining the location of the smoke source based on the smoke concentration data;

[0180] S30: Adjust the direction of the air inlet of the range hood 100 based on the location of the smoke source.

[0181] For another example, when the program is executed by the processor 320, the following control method for automatic tracking and purification of the range hood is implemented:

[0182] S40: Acquire thermal imaging data detected by the infrared sensor 30;

[0183] S50: Acquire distance data detected by the ultrasonic sensor 40;

[0184] S60: Acquire geometric structure data of the cooking operation platform;

[0185] S21: Determine the location of the smoke source based on the smoke concentration data, thermal imaging data, distance data, and geometric structure data.

[0186] It should be noted that the explanation of the control method for automatic tracking and purification of the range hood in the aforementioned embodiment is also applicable to the computer-readable storage medium 300 of the embodiment of the present application, and will not be elaborated here.

[0187] In summary, the control method for automatic tracking and purification of range hoods, the control device 200 for automatic tracking and purification of range hoods, the range hood 100 and the computer-readable storage medium 300 of the embodiments of the present application determine the location of the smoke source based on the smoke concentration data detected by multiple smoke sensors 20, and then adjust the direction of the air inlet of the range hood 100 based on the location of the smoke source. In this way, the precise positioning and automatic tracking of the smoke source can be achieved, thereby improving the purification effect of the range hood 100 and the user experience.

[0188] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0189] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may be performed out of the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present application belong.

[0190] The logic and / or steps represented in the flowcharts or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing the logical functions, and can be embodied in any computer-readable storage medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (e.g., a computer-based system, a system including a processor, or other system that can fetch and execute instructions from an instruction execution system, apparatus, or device). For purposes of this specification, a computer-readable storage medium can be any device that can contain, store, communicate, propagate, or transport a program for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable storage media include the following: an electrical connection having one or more wires (electronic devices), a portable computer disk cartridge (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disc read-only memory (CDROM). In addition, the computer-readable storage medium may even be paper or other suitable medium on which the program is printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing it in another suitable manner as necessary, and then stored in a computer memory.

[0191] It should be understood that various parts of the present application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one of the following technologies known in the art or a combination thereof can be used to implement: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application-specific integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0192] Those skilled in the art will appreciate that all or part of the steps carried out in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a program, and the program can be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment. In addition, the various functional units in the various embodiments of the present application can be integrated into a processing module, or each unit can exist physically alone, or two or more units can be integrated into one module. The above-mentioned integrated module can be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. The storage medium mentioned above can be a read-only memory, a disk or an optical disk, etc.

[0193] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A control method for automatic tracking purification of a range hood, characterized in that: The range hood includes a plurality of smoke sensors, and the control method includes: Acquiring smoke concentration data detected by a plurality of smoke sensors; determining the location of the smoke source based on the smoke concentration data; The direction of the air inlet of the range hood is adjusted based on the location of the smoke source.

2. The control method according to claim 1, characterized in that: The range hood further includes an infrared sensor and an ultrasonic sensor, and the control method further includes: Acquiring thermal imaging data detected by the infrared sensor; Acquiring distance data detected by the ultrasonic sensor; Acquire geometric structure data of the cooking platform; The determining the smoke source location based on the smoke concentration data includes: The smoke source position is determined according to the smoke concentration data, the thermal imaging data, the distance data and the geometric structure data.

3. The control method according to claim 2, characterized in that: The determining the location of the smoke source according to the smoke concentration data, the thermal imaging data, the distance data, and the geometric structure data includes: establishing a three-dimensional spatial coordinate system for the cooking area according to the smoke concentration data, the thermal imaging data, the distance data, and the geometric structure data; Obtaining the coordinates of the smoke source in the three-dimensional space coordinate system; The adjusting the direction of the air inlet of the range hood based on the position of the smoke source includes: The direction of the air inlet of the range hood is adjusted based on the coordinates of the smoke source.

4. The control method according to claim 1, wherein: The range hood further includes a drive assembly and an air inlet module. The drive assembly includes a motor and a pan / tilt head. The air inlet of the range hood is provided at the air inlet module. Adjusting the direction of the air inlet of the range hood based on the position of the smoke source includes: Based on the location of the smoke source, the motor is controlled to drive the pan / tilt platform to move, thereby driving the air intake module to move.

5. The control method according to claim 4, characterized in that: The motor includes a first motor and a second motor, and the pan-tilt platform includes a first bracket and a second bracket. Based on the position of the smoke source, the motor is controlled to drive the pan-tilt platform to move, so as to drive the air intake module to move, including: Based on the location of the smoke source, the first motor is controlled to drive the first bracket to rotate in the horizontal direction and / or the second motor is controlled to drive the second bracket to rotate in the vertical direction, so as to drive the air intake module to move.

6. The control method according to claim 4, characterized in that: The range hood further includes an infrared sensor, and the control method further includes: Acquiring thermal imaging data detected by the infrared sensor; determining first obstacle information within a first predetermined range of the range hood based on the thermal imaging data; Based on the first obstacle information, controlling the motor to drive the pan-tilt platform to move, so as to drive the air intake module to move; and / or The range hood further includes an ultrasonic sensor, and the control method further includes: Acquiring distance data detected by the ultrasonic sensor; determining second obstacle information within a second predetermined range of the range hood based on the distance data; Based on the second obstacle information, the motor is controlled to drive the pan-tilt platform to move, thereby driving the air intake module to move.

7. The control method according to claim 1, characterized in that: The range hood further includes a fan, and the control method further includes: adjusting the speed of the fan based on the smoke concentration data; The higher the smoke concentration, the higher the rotation speed of the fan.

8. A control device for automatic tracking and purification of a range hood, characterized in that: The range hood includes a plurality of smoke sensors, and the control device includes: an acquisition module, configured to acquire smoke concentration data detected by a plurality of smoke sensors; a determination module, configured to determine a smoke source location based on the smoke concentration data; An adjustment module is used to adjust the direction of the air inlet of the range hood based on the location of the smoke source.

9. A range hood, characterized in that: The range hood includes one or more processors and a memory, wherein the memory stores a computer program. When the computer program is executed by the processor, the control method for automatic tracking and purification of the range hood according to any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the control method for automatic tracking and purification of the range hood according to any one of claims 1 to 7 is implemented.

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