Control method and system for a range hood

Abstract

The application discloses a control method and system of an extractor hood, at least one of door and window sensor detection data, sound sensor detection data, pressure sensor detection data, distance sensor detection data and temperature sensor detection data is analyzed and processed, at least one of the working state scene of the extractor hood, the object operation scene in the kitchen, the working state scene of the stove and the working state scene of the pot is obtained by prediction, and the current fan gear under each scene is automatically adjusted in real time, so that the current fan gear of the extractor hood always adapts to the corresponding scene, and the oil smoke absorption effect is improved. The control method of the extractor hood makes the extractor hood in a more intelligent working gear, has the effect of reducing noise, and improves the user experience.

Description

Technical Field

[0001] This application relates to the field of range hood control, and in particular to a control method and system for a range hood. Background Technology

[0002] Range hoods are an indispensable kitchen appliance in modern homes. Installed above the stove, they quickly remove waste from the stove and harmful fumes produced during cooking, expelling them outdoors, reducing pollution, purifying the air, and providing safety features such as protection against poisoning and explosions.

[0003] Existing range hoods typically operate at fixed speeds or settings, exhibiting poor adaptability to interference from duct resistance and natural drafts when doors and windows are simultaneously open. Some range hoods utilize fume sensors to detect fume concentration. These sensors often employ infrared, laser, or odor detection principles to directly detect the concentration of fume above the cooktop or its equivalent. The sensors transmit the fume signal in real-time to the main control board via wired or wireless means, which then determines the hood's on / off status and operational status based on the fume concentration. Other range hoods adjust fan speeds based on fume concentration detection. When the fume concentration exceeds a set threshold, the hood activates and adjusts its speed, baffle position, and other operational parameters in real-time according to the fume concentration. However, when a range hood adjusts its fan speed after detecting the concentration of cooking fumes, some areas of the kitchen may already be filled with fumes or pungent odors. Increasing the fan speed only after the fumes have spread out is a delayed control method, resulting in a poor user experience. Therefore, it is necessary to research a system that can predict scenarios in advance and dynamically adjust the range hood speed accordingly. Summary of the Invention

[0004] This application proposes a control method for a range hood, which predicts the cooking process in the kitchen environment based on multi-sensor detection data, and automatically adjusts the fan speed according to the scenario to improve the oil fume absorption effect, thus solving the problem of poor adaptive ability of the range hood to adjust the fan speed in the cooking scenario.

[0005] According to one aspect of this application, a control method for a range hood is provided, the method comprising:

[0006] Acquire target sensor detection data;

[0007] The target sensor detection data is processed by scene analysis to obtain target scene information, which includes at least one of the following: the working state scene of the range hood, the object operation scene in the kitchen, the working state scene of the stove, and the working state scene of the pot.

[0008] The gear adjustment information is determined based on the target scenario information to adjust the current fan speed of the range hood.

[0009] The current fan speed of the range hood is adjusted according to the aforementioned speed adjustment information;

[0010] The target sensor detection data includes at least one of door and window sensor detection data, sound sensor detection data, pressure sensor detection data, distance sensor detection data, and temperature sensor detection data. The door and window sensor detection data is used to characterize the opening and closing status of doors and windows in the kitchen environment and the air pressure status in the kitchen environment. The sound sensor detection data is used to characterize the sound in the kitchen environment. The pressure sensor detection data is used to characterize the weight change on the stove support in the kitchen environment. The distance sensor detection data is used to characterize the object position information of the object located in front of the range hood. The temperature sensor detection data is used to characterize the temperature information of the bottom of the pot on the stove support.

[0011] In one possible implementation, the target sensor detection data includes door and window sensor detection data, pressure sensor detection data, and distance sensor detection data.

[0012] The step of performing scene analysis processing on the target sensor detection data to obtain target scene information includes:

[0013] Analyze the detection data of the door and window sensors. If the door and window analysis results indicate that the door and window are both closed, determine that the target scene information is a scene where the range hood has negative suction pressure.

[0014] If the door and window analysis results indicate that either the door or the window is open and the air pressure in the kitchen environment is negative, then the target scenario information is determined to be a scenario where the range hood is not receiving enough air; wherein, the negative air pressure indicates that there is a whistling sound in the kitchen environment.

[0015] If the door and window analysis results indicate that either the door or the window is open and there is no whistling sound in the kitchen environment, or if the door and window analysis results indicate that both the door and the window are open, the pressure sensor detection data is analyzed. If the pressure analysis results indicate that the weight on the stove support has increased, the target scene information is determined to be the food putting into the pot scene.

[0016] If the pressure analysis results indicate that the weight on the stove support has decreased, distance analysis is performed on the distance sensor detection data. If the distance analysis results indicate that there is an object in front of the range hood, the target scene information is determined to be the object flipping the wok and stir-frying. If the distance analysis results indicate that there is no object in front of the range hood, the target scene information is determined to be the object washing the pot.

[0017] In one possible implementation, the analysis of the pressure sensor detection data includes:

[0018] Determine the difference between the pressure sensor detection data and the historical sensor detection data;

[0019] When the difference is greater than the preset pressure difference and the pressure sensor detection data is greater than the historical pressure sensor detection data, a pressure analysis result indicating that the weight on the stove support has increased is obtained.

[0020] When the difference is greater than the preset pressure difference and the pressure sensor detection data is less than the historical pressure sensor detection data, a pressure analysis result indicating that the weight on the stove support has decreased is obtained.

[0021] In one possible implementation, the target sensor detection data includes door and window sensor detection data, pressure sensor detection data, and sound sensor detection data.

[0022] The target scene information is obtained by performing scene analysis processing on the target sensor detection data.

[0023] The door and window sensor detection data is analyzed. If the analysis results indicate that either the door or the window is open and there is no whistling sound in the kitchen environment, or if the analysis results indicate that both the door and the window are open, pressure analysis is performed on the pressure sensor detection data. If the pressure analysis results indicate that the weight on the stove support has decreased, the time of the weight decrease is compared with a preset time threshold. The weight decrease time is used to characterize the duration of the pressure decrease on the pot support.

[0024] If the time for the weight to decrease is less than or equal to a preset time, the target scene information is determined to be a scene of an object flipping a wok and stir-frying vegetables.

[0025] If the time for the weight to decrease is longer than a preset time, sound analysis is performed on the sound sensor detection data. If the sound analysis result indicates that there is running water sound in the kitchen environment, the target scene information is determined to be the scene of washing a pot; if the sound analysis result indicates that there is no running water sound in the kitchen environment, the target scene information is determined to be the scene of stir-frying food in a wok.

[0026] In one possible implementation, the target sensor detection data includes door and window sensor detection data, sound sensor detection data, and temperature sensor detection data.

[0027] The target scene information is obtained by performing scene analysis processing on the target sensor detection data.

[0028] The door and window sensor detection data is analyzed. When the door and window analysis results indicate that either the door or the window is open and there is no whistling sound in the kitchen environment, or when the door and window analysis results indicate that both the door and the window are open, the temperature sensor detection data is compared with a preset temperature threshold. The preset temperature threshold includes a first temperature threshold and a second temperature threshold, and the first temperature threshold is higher than the second temperature threshold.

[0029] If the temperature sensor detects data that is greater than the first temperature threshold, the target scenario information is determined to be a scenario where the stove's firepower is higher than the preset firepower.

[0030] If the temperature sensor detects data that is less than or equal to the second temperature threshold, the target scenario is determined to be a scenario where the working temperature of the cookware has not risen to the smoke point.

[0031] When the temperature sensor detection data is greater than or equal to the second temperature threshold and less than the first temperature threshold, the temperature time change rate of the temperature sensor detection data is analyzed. When the temperature time change rate analysis result indicates that the heating rate is greater than the preset heating rate, the sound sensor detection data is analyzed. When the sound analysis result indicates that there is conversation, the target scene information is determined to be a conversation scene in the kitchen.

[0032] In one possible implementation, if the temperature change rate analysis indicates that the cooling rate is greater than a preset cooling rate, the cooling duration is compared with the preset cooling time, where the cooling duration characterizes the duration of temperature decrease.

[0033] When the cooling time is less than or equal to the preset cooling time, the sound sensor detection data is analyzed. When the sound analysis result indicates that there is conversation, the target scene information is determined to be a conversation scene in the kitchen.

[0034] If the cooling time exceeds the preset cooling time, the target scene information is determined to be a scene in the kitchen where an object is turning down the heat or adding water.

[0035] In one possible implementation, the opening / closing state of the doors and windows is obtained through door sensors and the position of the window guide rail push rods.

[0036] If the time for the weight to decrease is greater than a preset time and the pressure sensor data is less than or equal to the initial pressure threshold, the target scene information is determined to be a scene in the kitchen where an object removes a pot from the stove support. The initial pressure threshold represents the pressure on the pot support when the weight begins to decrease.

[0037] In one possible implementation, the step of determining the fan speed adjustment information based on the target scenario information to adjust the current fan speed of the range hood includes:

[0038] If the target scenario is that the range hood is not supplying enough gas or is operating under negative pressure, the setting adjustment information is determined to be to reduce the current fan setting, and the user is prompted to open any one of the doors or windows or increase the opening degree of the doors or windows.

[0039] In the case where the target scenario is a scene of stir-frying food, the gear adjustment information is determined to be the adjustment information of increasing the current fan gear.

[0040] If the target scenario information is any one of the following scenarios: the object is washing a pot, the object is removing the pot from the stove support, the pot's working temperature has not reached the smoke point, the object is talking, the object is turning down the heat, or the object is adding water, then the gear adjustment information is determined to be the adjustment information to reduce the current fan gear.

[0041] When the target scenario is food being cooked, the gear adjustment information is determined to be increasing the current fan gear, and after running for a preset time, it is adjusted back to the fan gear before the increase.

[0042] If the target scenario is that the stove's firepower is higher than the preset firepower, the gear adjustment information is determined to be the adjustment information to increase the current fan gear, and the user is prompted to reduce the firepower.

[0043] In one possible implementation, the fan speed settings include a first speed setting and a second speed setting, where the second speed setting is higher than the first speed setting.

[0044] Adjusting the current fan speed of the range hood according to the aforementioned speed adjustment information includes:

[0045] If the gear adjustment information is to reduce the current fan gear, reduce the fan gear of the range hood to the first gear.

[0046] If the gear adjustment information indicates that the current fan gear should be increased, then the range hood's fan gear should be increased to the second gear.

[0047] If the adjustment information is to increase the current fan speed and then adjust it back to the original fan speed after a preset running time, the range hood's fan speed is increased to the second speed. After running at the second speed for the preset running time, the fan speed is decreased back to the original fan speed.

[0048] On the other hand, a control system for a range hood is provided, the system including a controller and a target sensor and a fan speed control device communicatively connected to the controller.

[0049] The target sensor is used to collect target sensor detection data; the target sensor detection data includes at least one of the following: door and window sensor detection data collected by the door and window sensor, sound sensor detection data collected by the sound sensor, pressure sensor detection data collected by the pressure sensor, distance sensor detection data collected by the distance sensor, and temperature sensor detection data collected by the temperature sensor; the door and window sensor detection data is used to characterize the opening and closing status of doors and windows in the kitchen environment and the air pressure status in the kitchen environment; the sound sensor detection data is used to characterize the sound in the kitchen environment; the pressure sensor detection data is used to characterize the weight change on the stove support in the kitchen environment; the distance sensor detection data is used to characterize the object position information of the object located in front of the range hood; and the temperature sensor detection data is used to characterize the temperature information of the bottom of the pot on the stove support.

[0050] The controller is used to perform scene analysis and processing on the target sensor detection data to obtain target scene information, determine the gear adjustment information for adjusting the current fan speed of the range hood based on the target scene information, and control the fan speed control device to adjust the fan speed of the range hood based on the gear adjustment information.

[0051] In one possible implementation,

[0052] The door and window sensor includes a first door and window sensor and a second door and window sensor, wherein the first door and window sensor is installed on the door and the second door and window sensor is installed on the window;

[0053] The sound sensor and the distance sensor are respectively embedded in the plane of the range hood near the user, and the pressure sensor is installed on the bracket of the stove.

[0054] In one possible implementation, the controller includes:

[0055] Data acquisition unit: used to acquire target sensor detection data;

[0056] Scene analysis unit: used to perform scene analysis processing on the target sensor detection data to obtain target scene information, the target scene information including at least one of the following: the working status scene of the range hood, the object operation scene in the kitchen, the working status scene of the stove, and the working status scene of the pot;

[0057] Gear adjustment information unit: used to determine the gear adjustment information for adjusting the current fan gear of the range hood based on the target scene information;

[0058] Fan speed adjustment unit: used to adjust the current fan speed of the range hood according to the speed adjustment information;

[0059] The target sensor detection data includes at least one of door and window sensor detection data, sound sensor detection data, pressure sensor detection data, distance sensor detection data, and temperature sensor detection data. The door and window sensor detection data is used to characterize the opening and closing status of doors and windows in the kitchen environment and the air pressure status in the kitchen environment. The sound sensor detection data is used to characterize the sound in the kitchen environment. The pressure sensor detection data is used to characterize the weight change on the stove support in the kitchen environment. The distance sensor detection data is used to characterize the object position information of the object located in front of the range hood. The temperature sensor detection data is used to characterize the temperature information of the bottom of the pot on the stove support.

[0060] In one possible implementation, the target sensor detection data includes door and window sensor detection data, pressure sensor detection data, and distance sensor detection data.

[0061] The scene analysis unit includes:

[0062] Analyze the detection data of the door and window sensors. If the door and window analysis results indicate that the door and window are both closed, determine that the target scene information is a scene where the range hood has negative suction pressure.

[0063] If the door and window analysis results indicate that either the door or the window is open and the air pressure in the kitchen environment is negative, then the target scenario information is determined to be a scenario where the range hood is not receiving enough air; wherein, the negative air pressure indicates that there is a whistling sound in the kitchen environment.

[0064] If the door and window analysis results indicate that either the door or the window is open and there is no whistling sound in the kitchen environment, or if the door and window analysis results indicate that both the door and the window are open, the pressure sensor detection data is analyzed. If the pressure analysis results indicate that the weight on the stove support has increased, the target scene information is determined to be the food putting into the pot scene.

[0065] If the pressure analysis results indicate that the weight on the stove support has decreased, distance analysis is performed on the distance sensor detection data. If the distance analysis results indicate that there is an object in front of the range hood, the target scene information is determined to be the object flipping the wok and stir-frying. If the distance analysis results indicate that there is no object in front of the range hood, the target scene information is determined to be the object washing the pot.

[0066] In one possible implementation, the scene analysis unit is used to analyze the pressure sensor detection data, including:

[0067] Determine the difference between the pressure sensor detection data and the historical sensor detection data;

[0068] When the difference is greater than the preset pressure difference and the pressure sensor detection data is greater than the historical pressure sensor detection data, a pressure analysis result indicating that the weight on the stove support has increased is obtained.

[0069] When the difference is greater than the preset pressure difference and the pressure sensor detection data is less than the historical pressure sensor detection data, a pressure analysis result indicating that the weight on the stove support has decreased is obtained.

[0070] In one possible implementation, the target sensor detection data includes door and window sensor detection data, pressure sensor detection data, and sound sensor detection data.

[0071] The scene analysis unit includes:

[0072] The door and window sensor detection data is analyzed. If the analysis results indicate that either the door or the window is open and there is no whistling sound in the kitchen environment, or if the analysis results indicate that both the door and the window are open, pressure analysis is performed on the pressure sensor detection data. If the pressure analysis results indicate that the weight on the stove support has decreased, the time of the weight decrease is compared with a preset time threshold. The weight decrease time is used to characterize the duration of the pressure decrease on the pot support.

[0073] If the time for the weight to decrease is less than or equal to a preset time, the target scene information is determined to be a scene of an object flipping a wok and stir-frying vegetables.

[0074] If the time for the weight to decrease is longer than a preset time, sound analysis is performed on the sound sensor detection data. If the sound analysis result indicates that there is running water sound in the kitchen environment, the target scene information is determined to be the scene of washing a pot; if the sound analysis result indicates that there is no running water sound in the kitchen environment, the target scene information is determined to be the scene of stir-frying food in a wok.

[0075] In one possible implementation, the target sensor detection data includes door and window sensor detection data, sound sensor detection data, and temperature sensor detection data.

[0076] The scene analysis unit includes:

[0077] The door and window sensor detection data is analyzed. When the door and window analysis results indicate that either the door or the window is open and there is no whistling sound in the kitchen environment, or when the door and window analysis results indicate that both the door and the window are open, the temperature sensor detection data is compared with a preset temperature threshold. The preset temperature threshold includes a first temperature threshold and a second temperature threshold, and the first temperature threshold is higher than the second temperature threshold.

[0078] If the temperature sensor detects data that is greater than the first temperature threshold, the target scenario information is determined to be a scenario where the stove's firepower is higher than the preset firepower.

[0079] If the temperature sensor detects data that is less than or equal to the second temperature threshold, the target scenario is determined to be a scenario where the working temperature of the cookware has not risen to the smoke point.

[0080] When the temperature sensor detection data is greater than or equal to the second temperature threshold and less than the first temperature threshold, the temperature time change rate of the temperature sensor detection data is analyzed. When the temperature time change rate analysis result indicates that the heating rate is greater than the preset heating rate, the sound sensor detection data is analyzed. When the sound analysis result indicates that there is conversation, the target scene information is determined to be a conversation scene in the kitchen.

[0081] In one possible implementation, the scene analysis unit is used to compare the cooling duration with a preset cooling time when the temperature change rate analysis result indicates that the cooling rate is greater than a preset cooling rate. The cooling duration is used to characterize the duration of temperature decrease, including:

[0082] When the cooling time is less than or equal to the preset cooling time, the sound sensor detection data is analyzed. When the sound analysis result indicates that there is conversation, the target scene information is determined to be a conversation scene in the kitchen.

[0083] If the cooling time exceeds the preset cooling time, the target scene information is determined to be a scene in the kitchen where an object is turning down the heat or adding water.

[0084] In one possible implementation, the opening / closing state of the doors and windows is obtained through door sensors and the position of the window guide rods; the scene analysis unit is used for...

[0085] If the time for the weight to decrease is greater than a preset time and the pressure sensor data is less than or equal to the initial pressure threshold, the target scene information is determined to be a scene in the kitchen where an object removes a pot from the stove support. The initial pressure threshold represents the pressure on the pot support when the weight begins to decrease.

[0086] In one possible implementation, the gear adjustment information unit includes:

[0087] If the target scenario is that the range hood is not supplying enough gas or is operating under negative pressure, the setting adjustment information is determined to be to reduce the current fan setting, and the user is prompted to open any one of the doors or windows or increase the opening degree of the doors or windows.

[0088] In the case where the target scenario is a scene of stir-frying food, the gear adjustment information is determined to be the adjustment information of increasing the current fan gear.

[0089] If the target scenario information is any one of the following scenarios: the object is washing a pot, the object is removing the pot from the stove support, the pot's working temperature has not reached the smoke point, the object is talking, the object is turning down the heat, or the object is adding water, then the gear adjustment information is determined to be the adjustment information to reduce the current fan gear.

[0090] When the target scenario is food being cooked, the gear adjustment information is determined to be increasing the current fan gear, and after running for a preset time, it is adjusted back to the fan gear before the increase.

[0091] If the target scenario is that the stove's firepower is higher than the preset firepower, the gear adjustment information is determined to be the adjustment information to increase the current fan gear, and the user is prompted to reduce the firepower.

[0092] In one possible implementation, the fan speed settings include a first speed setting and a second speed setting, where the second speed setting is higher than the first speed setting.

[0093] The fan speed adjustment unit includes:

[0094] If the gear adjustment information is to reduce the current fan gear, reduce the fan gear of the range hood to the first gear.

[0095] If the gear adjustment information indicates that the current fan gear should be increased, then the range hood's fan gear should be increased to the second gear.

[0096] If the adjustment information is to increase the current fan speed and then adjust it back to the original fan speed after a preset running time, the range hood's fan speed is increased to the second speed. After running at the second speed for the preset running time, the fan speed is decreased back to the original fan speed.

[0097] On the other hand, an electronic device is provided, including a processor and a memory, wherein the memory stores at least one instruction or at least one program, the at least one instruction or the at least one program being loaded and executed by the processor to implement the control method of the range hood in any of the above aspects.

[0098] On the other hand, a computer-readable storage medium is provided, wherein at least one instruction or at least one program is stored therein, the at least one instruction or the at least one program being loaded and executed by a processor to implement the control method of the range hood as described above.

[0099] On the other hand, a computer program product or computer program is provided, which includes computer instructions stored in a computer-readable storage medium. A processor of an electronic device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the electronic device to perform the control method for a range hood according to any of the above aspects.

[0100] This application analyzes and processes at least one of the following data: door and window sensor data, sound sensor data, pressure sensor data, distance sensor data, and temperature sensor data. It then predicts at least one of the following scenarios: the operating state of the range hood, the object operation scenario in the kitchen, the operating state of the stove, and the operating state of the cookware. Based on these scenarios, it automatically adjusts the current fan speed in real time for each scenario, ensuring that the range hood's current fan speed is always adapted to the corresponding scenario, thus improving the fume absorption effect. This range hood control method enables the range hood to operate at a more intelligent speed, while also reducing noise and improving the user experience. Attached Figure Description

[0101] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0102] Figure 1 This is a flowchart illustrating a control method for a range hood provided in an embodiment of this application;

[0103] Figure 2 This is a schematic diagram of an embodiment of a control method for a range hood provided in this application. Figure 1 ;

[0104] Figure 3 This is a schematic diagram of an embodiment of a control method for a range hood provided in this application. Figure 2 ;

[0105] Figure 4 This is a schematic diagram of an embodiment of a control method for a range hood provided in this application. Figure 3 ;

[0106] Figure 5 This is a schematic diagram of an embodiment of a control method for a range hood provided in this application. Figure 4 ;

[0107] Figure 6 This is a system block diagram of a control method for a range hood provided in an embodiment of this application. Detailed Implementation

[0108] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0109] The control method of the range hood according to an embodiment of this application will be described below with reference to the accompanying drawings.

[0110] like Figure 1 As shown, the control method of the range hood includes steps S101 to S107.

[0111] In step S101, target sensor detection data is acquired.

[0112] In one possible implementation, the target sensor detection data includes at least one of door and window sensor detection data, sound sensor detection data, pressure sensor detection data, distance sensor detection data, and temperature sensor detection data; the door and window sensor detection data is used to characterize the opening and closing status of doors and windows in the kitchen environment and the air pressure status in the kitchen environment; the sound sensor detection data is used to characterize the sound in the kitchen environment; the pressure sensor detection data is used to characterize the weight change on the stove support in the kitchen environment; the distance sensor detection data is used to characterize the object position information of the object located in front of the range hood; and the temperature sensor detection data is used to characterize the temperature information of the bottom of the pot on the stove support.

[0113] In one possible implementation, the target sensor detection data is data collected by the target sensor, which includes at least one of a door / window sensor, a sound sensor, a pressure sensor, a distance sensor, and a temperature sensor. The target sensor communicates with the cooktop and range hood using methods such as ZigBee (a wireless communication technology), Wi-Fi (a mobile hotspot, a wireless networking technology), or radio frequency. Specifically, the door / window sensor can be a first door / window sensor and a second door / window sensor, with the first sensor mounted on the door and the second sensor mounted on the window. Alternatively, the door / window sensor can be a door sensor and a window guide rod, with the door sensor mounted on the door and the window guide rod detecting the window's opening / closing position.

[0114] In this implementation, based on various types of daily cooking activities and the impact of these activities on smoke generation in the cooking area, multiple sensors are used to collect data during the cooking process in order to predict the scenario in advance and make corresponding adjustments before the smoke dissipates.

[0115] In step S103, the target sensor detection data is processed by scene analysis to obtain target scene information.

[0116] In one possible implementation, the target scene information includes at least one of the following: the operating state scene of the range hood, the object operation scene in the kitchen, the operating state scene of the stove, and the operating state scene of the cookware. The operating state scene of the range hood includes scenarios with insufficient gas supply and scenarios with negative pressure. The object operation scene in the kitchen includes scenarios of an object tossing food in a wok, an object washing a pot, an object removing a cookware from the stove support, an object conversing, an object turning down the heat, and an object adding water. The operating state scene of the stove includes scenarios where the stove heat is higher than the preset heat. The operating state scene of the cookware includes scenarios where the cookware's operating temperature has not reached the smoke point and scenarios where food is added to the pot.

[0117] In one possible implementation, such as Figure 2 As shown, the target sensor detection data includes door and window sensor detection data, pressure sensor detection data, and distance sensor detection data.

[0118] The step of performing scene analysis processing on the target sensor detection data to obtain target scene information includes:

[0119] Analyze the detection data of the door and window sensors. If the door and window analysis results indicate that the door and window are both closed, determine that the target scene information is a scene where the range hood has negative suction pressure.

[0120] If the door and window analysis results indicate that either the door or the window is open and the air pressure in the kitchen environment is negative, then the target scenario information is determined to be a scenario where the range hood is not receiving enough air; wherein, the negative air pressure indicates that there is a whistling sound in the kitchen environment.

[0121] If the door and window analysis results indicate that either the door or the window is open and there is no whistling sound in the kitchen environment, or if the door and window analysis results indicate that both the door and the window are open, the pressure sensor detection data is analyzed. If the pressure analysis results indicate that the weight on the stove support has increased, the target scene information is determined to be the food putting into the pot scene.

[0122] If the pressure analysis results indicate that the weight on the stove support has decreased, distance analysis is performed on the distance sensor detection data. If the distance analysis results indicate that there is an object in front of the range hood, the target scene information is determined to be the object flipping the wok and stir-frying. If the distance analysis results indicate that there is no object in front of the range hood, the target scene information is determined to be the object washing the pot.

[0123] In one possible implementation, a sound database can be pre-set to match whistling sounds, running water sounds, or conversations between people in the kitchen environment.

[0124] In one possible implementation, the analysis of the pressure sensor detection data includes:

[0125] Determine the difference between the pressure sensor detection data and the historical sensor detection data;

[0126] When the difference is greater than the preset pressure difference and the pressure sensor detection data is greater than the historical pressure sensor detection data, a pressure analysis result indicating that the weight on the stove support has increased is obtained.

[0127] When the difference is greater than a preset pressure difference and the detection data of the pressure sensor is less than the historical detection data of the pressure sensor, a pressure analysis result indicating that the weight on the cooker bracket has decreased is obtained.

[0128] In a possible implementation, as Figure 2 shown, determining a difference |F-F1| between the pressure sensor detection data F and historical sensor detection data F1;

[0129] When |F-F1|>a and F>F1, a pressure analysis result indicating that the weight on the cooker bracket has increased is obtained;

[0130] When |F-F1|>a and F<F1, a pressure analysis result indicating that the weight on the cooker bracket has decreased is obtained.

[0131] In a possible implementation, said analyzing the detection data of the pressure sensor comprises:

[0132] determining a difference between the pressure sensor detection data and historical sensor detection data;

[0133] When the difference is less than or equal to the preset pressure difference, a pressure analysis result indicating that the weight change on the cooker bracket is less than or equal to the preset pressure difference is obtained, and the target scene information is kept as the target scene information before the pressure sensor data is analyzed.

[0134] In a possible implementation, as Figure 2 shown, determining a difference |F-F1| between the pressure sensor detection data and historical sensor detection data;

[0135] When |F-F1|<a, a pressure analysis result indicating that the weight change on the cooker bracket is less than or equal to the preset pressure difference is obtained, and the target scene information is kept as the target scene information before the pressure sensor data is analyzed.

[0136] In a possible implementation, as Figure 3 shown, the target sensor detection data comprises door and window sensor detection data, pressure sensor detection data and sound sensor detection data,

[0137] performing scene analysis processing on the target sensor detection data to obtain target scene information,

[0138] The door and window sensor detection data is analyzed. If the analysis results indicate that either the door or the window is open and there is no whistling sound in the kitchen environment, or if the analysis results indicate that both the door and the window are open, pressure analysis is performed on the pressure sensor detection data. If the pressure analysis results indicate that the weight on the stove support has decreased, the time of the weight decrease is compared with a preset time threshold. The weight decrease time is used to characterize the duration of the pressure decrease on the pot support.

[0139] If the time for the weight to decrease is less than or equal to a preset time, the target scene information is determined to be a scene of an object flipping a wok and stir-frying vegetables.

[0140] If the time for the weight to decrease is longer than a preset time, sound analysis is performed on the sound sensor detection data. If the sound analysis result indicates that there is running water sound in the kitchen environment, the target scene information is determined to be the scene of washing a pot; if the sound analysis result indicates that there is no running water sound in the kitchen environment, the target scene information is determined to be the scene of stir-frying food in a wok.

[0141] In one possible implementation, such as Figure 3 As shown, the door and window sensor detection data is analyzed. When the analysis results of the door and window sensor detection data indicate that either the door or the window is open and there is no whistling sound in the kitchen environment, or when the door and window analysis results indicate that both the door and the window are open, pressure analysis is performed on the pressure sensor detection data. When the pressure analysis results indicate that the weight on the stove support has decreased, the weight decrease time t1 is compared with the preset time threshold t0. The weight decrease time t1 is used to characterize the duration of the pressure decrease on the pot support.

[0142] If t1 <= t0, the target scene information is determined to be the scene of the object flipping a wok and stir-frying vegetables;

[0143] When t1>t0, sound analysis is performed on the sound sensor detection data. If the sound analysis result indicates that there is running water sound in the kitchen environment, the target scene information is determined to be the scene of washing a pot. If the sound analysis result indicates that there is no running water sound in the kitchen environment, the target scene information is determined to be the scene of stir-frying food in a wok.

[0144] In one possible implementation, such as Figure 4 As shown, the target sensor detection data includes door and window sensor detection data, sound sensor detection data, and temperature sensor detection data.

[0145] The target scene information is obtained by performing scene analysis processing on the target sensor detection data.

[0146] The door and window sensor detection data is analyzed. When the door and window analysis results indicate that either the door or the window is open and there is no whistling sound in the kitchen environment, or when the door and window analysis results indicate that both the door and the window are open, the temperature sensor detection data is compared with a preset temperature threshold. The preset temperature threshold includes a first temperature threshold and a second temperature threshold, and the first temperature threshold is higher than the second temperature threshold.

[0147] If the temperature sensor detects data that is greater than the first temperature threshold, the target scenario information is determined to be a scenario where the stove's firepower is higher than the preset firepower.

[0148] If the temperature sensor detects data that is less than or equal to the second temperature threshold, the target scenario is determined to be a scenario where the working temperature of the cookware has not risen to the smoke point.

[0149] When the temperature sensor detection data is greater than or equal to the second temperature threshold and less than the first temperature threshold, the temperature-time change rate of the temperature sensor detection data is analyzed. If the temperature-time change rate analysis result indicates that the heating rate is greater than a preset heating rate, sound analysis is performed on the sound sensor detection data. If the sound analysis result indicates the presence of conversation, the target scene information is determined to be a conversation scene within a kitchen. Specifically, the temperature-time change rate of the temperature sensor detection data represents the temperature change. When the temperature-time change rate is positive, it indicates that the temperature is rising at the rate of the absolute value of the temperature-time change rate; when the temperature-time change rate is negative, it indicates that the temperature is falling at the rate of the absolute value of the temperature-time change rate.

[0150] In one possible implementation, such as Figure 4 As shown, the detection data from the door and window sensors are analyzed. When the analysis results indicate that either the door or the window is open and there is no whistling sound in the kitchen environment, or when the analysis results indicate that both the door and the window are open, the temperature sensor detection data T is compared with a preset temperature threshold. The preset temperature threshold includes a first temperature threshold T2 and a second temperature threshold T1, where the first temperature threshold T2 is higher than the second temperature threshold T1.

[0151] When T>T2, the target scenario information is determined to be a scenario where the stove firepower is higher than the preset firepower;

[0152] If T <= T1, the target scenario is determined to be a scenario where the working temperature of the cookware has not risen to the smoke point.

[0153] When the temperature sensor detects data T2>T>=T1, the temperature-time change rate g of the temperature sensor detects data is analyzed, where m and n are preset change rates, where m>n and n<0.

[0154] When g>=m, and the analysis results indicate that the heating rate is greater than the preset heating rate, sound analysis is performed on the sound sensor detection data. If the sound analysis results indicate the presence of conversation, the target scene information is determined to be a conversation between people in the kitchen. Specifically, the temperature-time change rate of the temperature sensor detection data represents the temperature change. When the temperature-time change rate is positive, it indicates that the temperature is rising at the rate of the absolute value of the temperature-time change rate; when the temperature-time change rate is negative, it indicates that the temperature is falling at the rate of the absolute value of the temperature-time change rate.

[0155] In one possible implementation, if the temperature change rate analysis indicates that the cooling rate is greater than a preset cooling rate, the cooling duration is compared with the preset cooling time, where the cooling duration characterizes the duration of temperature decrease.

[0156] When the cooling time is less than or equal to the preset cooling time, the sound sensor detection data is analyzed. When the sound analysis result indicates that there is conversation, the target scene information is determined to be a conversation scene in the kitchen.

[0157] If the cooling time exceeds the preset cooling time, the target scene information is determined to be a scene in the kitchen where an object is turning down the heat or adding water.

[0158] In one possible implementation, such as Figure 4 As shown, when g <= n < 0, the cooling time t2 and the preset cooling time s are compared. The cooling time t2 is used to characterize the duration of temperature decrease.

[0159] When t2<=s, sound analysis is performed on the sound sensor detection data. When the sound analysis result indicates the presence of conversation, the target scene information is determined to be a conversation scene in the kitchen.

[0160] When t2>s, the target scene information is determined to be an object in the kitchen turning down the heat or adding water.

[0161] In one possible implementation, such as Figure 4 As shown, when m>g>n, the target scene information is determined to remain unchanged from the current scene.

[0162] In one possible implementation, the opening / closing state of the doors and windows is obtained through door sensors and the position of the window guide rail push rods.

[0163] If the time for the weight to decrease is greater than a preset time and the pressure sensor data is less than or equal to the initial pressure threshold, the target scene information is determined to be a scene in the kitchen where an object removes a pot from the stove support. The initial pressure threshold represents the pressure on the pot support when the weight begins to decrease.

[0164] In one possible implementation, such as Figure 5 As shown, the opening and closing state of the doors and windows is obtained through the door sensor and the position of the window guide rail push rod. t1 is the time when the weight decreases, t0 is the preset time, F is the pressure sensor detection data, and F0 is the pressure sensor detection data at the start of the t1 timer.

[0165] Given t1>t0 and F<=F0, the target scene information is determined to be a scene in the kitchen where an object removes a pot from the stove support.

[0166] In this implementation, data collected by multiple sensors during the cooking process is analyzed to determine the cooking scenario. During cooking, the amount of oil fumes generated constantly changes depending on the process of food preparation, cooking, and cleaning, as well as the environment within the kitchen. Based on the multi-sensor analysis of the cooking scenario, corresponding scenario information is obtained to adjust the fan speed accordingly, enabling the range hood to operate at a more intelligent setting and improving the user experience.

[0167] In step S105, the gear adjustment information for adjusting the current fan speed of the range hood is determined based on the target scene information.

[0168] In one possible implementation, the step of determining the fan speed adjustment information based on the target scenario information to adjust the current fan speed of the range hood includes:

[0169] If the target scenario is that the range hood is not supplying enough gas or is operating under negative pressure, the setting adjustment information is determined to be to reduce the current fan setting, and the user is prompted to open any one of the doors or windows or increase the opening degree of the doors or windows.

[0170] In the case where the target scenario is a scene of stir-frying food, the gear adjustment information is determined to be the adjustment information of increasing the current fan gear.

[0171] If the target scenario information is any one of the following scenarios: the object is washing a pot, the object is removing the pot from the stove support, the pot's working temperature has not reached the smoke point, the object is talking, the object is turning down the heat, or the object is adding water, then the gear adjustment information is determined to be the adjustment information to reduce the current fan gear.

[0172] When the target scenario is food being cooked, the gear adjustment information is determined to be increasing the current fan gear, and after running for a preset time, it is adjusted back to the fan gear before the increase.

[0173] If the target scenario is that the stove's firepower is higher than the preset firepower, the gear adjustment information is determined to be the adjustment information to increase the current fan gear, and the user is prompted to reduce the firepower.

[0174] In this implementation, based on the scene information obtained by judging the scene during the cooking process by multiple sensors, the fan speed is adjusted accordingly, and corresponding prompts are given to the object, so that the range hood is in a more intelligent working mode, improving the user experience.

[0175] In step S107, the current fan speed of the range hood is adjusted according to the speed adjustment information.

[0176] In one possible implementation, the fan speed settings include a first speed setting and a second speed setting, where the second speed setting is higher than the first speed setting.

[0177] Adjusting the current fan speed of the range hood according to the aforementioned speed adjustment information includes:

[0178] If the gear adjustment information is to reduce the current fan gear, reduce the fan gear of the range hood to the first gear.

[0179] If the gear adjustment information indicates that the current fan gear should be increased, then the range hood's fan gear should be increased to the second gear.

[0180] If the adjustment information is to increase the current fan speed and then adjust it back to the original fan speed after a preset running time, the range hood's fan speed is increased to the second speed. After running at the second speed for the preset running time, the fan speed is decreased back to the original fan speed.

[0181] In this implementation, the fan speed is adjusted accordingly based on the target scene information confirmed by multiple sensors, thereby improving the oil fume absorption effect and putting the range hood in a more intelligent working mode. This solves the problem of poor adaptive ability of the range hood to adjust the fan speed in cooking scenarios.

[0182] Figure 6 The diagram shows a control system block diagram of a range hood according to an embodiment of this application. The control system includes: a controller 1, a target sensor 2 and a fan speed control device 3, which are communicatively connected to the controller.

[0183] The target sensor 2 is used to collect target sensor detection data; the target sensor detection data includes at least one of the following: door and window sensor detection data collected by the door and window sensor, sound sensor detection data collected by the sound sensor, pressure sensor detection data collected by the pressure sensor, distance sensor detection data collected by the distance sensor, and temperature sensor detection data collected by the temperature sensor; the door and window sensor detection data is used to characterize the opening and closing status of doors and windows in the kitchen environment and the air pressure status in the kitchen environment; the sound sensor detection data is used to characterize the sound in the kitchen environment; the pressure sensor detection data is used to characterize the weight change on the stove support in the kitchen environment; the distance sensor detection data is used to characterize the object position information of the object located in front of the range hood; and the temperature sensor detection data is used to characterize the temperature information of the bottom of the pot on the stove support.

[0184] The controller 1 is used to perform scene analysis and processing on the target sensor detection data to obtain target scene information, determine the gear adjustment information for adjusting the current fan speed of the range hood based on the target scene information, and control the fan speed control device 3 to adjust the fan speed of the range hood based on the gear adjustment information.

[0185] In one possible implementation, the door and window sensor detects the switch status magnetically and identifies sounds in the kitchen environment based on a built-in sound database; the sound sensor receives sound waves for subsequent matching with the built-in sound database; the pressure sensor is a device or apparatus that can sense pressure signals and convert them into usable output electrical signals; the distance sensor can be an infrared sensor or a microwave sensor for sensing the distance to targets in the environment; and the temperature sensor collects information about temperature and converts it into an output signal.

[0186] In one possible implementation,

[0187] The door and window sensor includes a first door and window sensor and a second door and window sensor, wherein the first door and window sensor is installed on the door and the second door and window sensor is installed on the window;

[0188] The sound sensor and the distance sensor are respectively embedded in the plane of the range hood near the user, and the pressure sensor is installed on the bracket of the stove.

[0189] In one possible implementation, the controller 1 includes:

[0190] Data acquisition unit: used to acquire target sensor detection data;

[0191] Scene analysis unit: used to perform scene analysis processing on the target sensor detection data to obtain target scene information, the target scene information including at least one of the following: the working status scene of the range hood, the object operation scene in the kitchen, the working status scene of the stove, and the working status scene of the pot;

[0192] Gear adjustment information unit: used to determine the gear adjustment information for adjusting the current fan gear of the range hood based on the target scene information;

[0193] Fan speed adjustment unit: used to adjust the current fan speed of the range hood according to the speed adjustment information;

[0194] The target sensor detection data includes at least one of door and window sensor detection data, sound sensor detection data, pressure sensor detection data, distance sensor detection data, and temperature sensor detection data. The door and window sensor detection data is used to characterize the opening and closing status of doors and windows in the kitchen environment and the air pressure status in the kitchen environment. The sound sensor detection data is used to characterize the sound in the kitchen environment. The pressure sensor detection data is used to characterize the weight change on the stove support in the kitchen environment. The distance sensor detection data is used to characterize the object position information of the object located in front of the range hood. The temperature sensor detection data is used to characterize the temperature information of the bottom of the pot on the stove support.

[0195] In one possible implementation, the target sensor detection data includes door and window sensor detection data, pressure sensor detection data, and distance sensor detection data.

[0196] The scene analysis unit includes:

[0197] Analyze the detection data of the door and window sensors. If the door and window analysis results indicate that the door and window are both closed, determine that the target scene information is a scene where the range hood has negative suction pressure.

[0198] If the door and window analysis results indicate that either the door or the window is open and the air pressure in the kitchen environment is negative, then the target scenario information is determined to be a scenario where the range hood is not receiving enough air; wherein, the negative air pressure indicates that there is a whistling sound in the kitchen environment.

[0199] If the door and window analysis results indicate that either the door or the window is open and there is no whistling sound in the kitchen environment, or if the door and window analysis results indicate that both the door and the window are open, the pressure sensor detection data is analyzed. If the pressure analysis results indicate that the weight on the stove support has increased, the target scene information is determined to be the food putting into the pot scene.

[0200] If the pressure analysis results indicate that the weight on the stove support has decreased, distance analysis is performed on the distance sensor detection data. If the distance analysis results indicate that there is an object in front of the range hood, the target scene information is determined to be the object flipping the wok and stir-frying. If the distance analysis results indicate that there is no object in front of the range hood, the target scene information is determined to be the object washing the pot.

[0201] In one possible implementation, the scene analysis unit is used to analyze the pressure sensor detection data, including:

[0202] Determine the difference between the pressure sensor detection data and the historical sensor detection data;

[0203] When the difference is greater than the preset pressure difference and the pressure sensor detection data is greater than the historical pressure sensor detection data, a pressure analysis result indicating that the weight on the stove support has increased is obtained.

[0204] When the difference is greater than the preset pressure difference and the pressure sensor detection data is less than the historical pressure sensor detection data, a pressure analysis result indicating that the weight on the stove support has decreased is obtained.

[0205] In one possible implementation, the target sensor detection data includes door and window sensor detection data, pressure sensor detection data, and sound sensor detection data.

[0206] The scene analysis unit includes:

[0207] The door and window sensor detection data is analyzed. If the analysis results indicate that either the door or the window is open and there is no whistling sound in the kitchen environment, or if the analysis results indicate that both the door and the window are open, pressure analysis is performed on the pressure sensor detection data. If the pressure analysis results indicate that the weight on the stove support has decreased, the time of the weight decrease is compared with a preset time threshold. The weight decrease time is used to characterize the duration of the pressure decrease on the pot support.

[0208] If the time for the weight to decrease is less than or equal to a preset time, the target scene information is determined to be a scene of an object flipping a wok and stir-frying vegetables.

[0209] If the time for the weight to decrease is longer than a preset time, sound analysis is performed on the sound sensor detection data. If the sound analysis result indicates that there is running water sound in the kitchen environment, the target scene information is determined to be the scene of washing a pot; if the sound analysis result indicates that there is no running water sound in the kitchen environment, the target scene information is determined to be the scene of stir-frying food in a wok.

[0210] In one possible implementation, the target sensor detection data includes door and window sensor detection data, sound sensor detection data, and temperature sensor detection data.

[0211] The scene analysis unit includes:

[0212] The door and window sensor detection data is analyzed. When the door and window analysis results indicate that either the door or the window is open and there is no whistling sound in the kitchen environment, or when the door and window analysis results indicate that both the door and the window are open, the temperature sensor detection data is compared with a preset temperature threshold. The preset temperature threshold includes a first temperature threshold and a second temperature threshold, and the first temperature threshold is higher than the second temperature threshold.

[0213] If the temperature sensor detects data that is greater than the first temperature threshold, the target scenario information is determined to be a scenario where the stove's firepower is higher than the preset firepower.

[0214] If the temperature sensor detects data that is less than or equal to the second temperature threshold, the target scenario is determined to be a scenario where the working temperature of the cookware has not risen to the smoke point.

[0215] When the temperature sensor detection data is greater than or equal to the second temperature threshold and less than the first temperature threshold, the temperature time change rate of the temperature sensor detection data is analyzed. When the temperature time change rate analysis result indicates that the heating rate is greater than the preset heating rate, the sound sensor detection data is analyzed. When the sound analysis result indicates that there is conversation, the target scene information is determined to be a conversation scene in the kitchen.

[0216] In one possible implementation, the scene analysis unit is used to compare the cooling duration with a preset cooling time when the temperature change rate analysis result indicates that the cooling rate is greater than a preset cooling rate. The cooling duration is used to characterize the duration of temperature decrease, including:

[0217] When the cooling time is less than or equal to the preset cooling time, the sound sensor detection data is analyzed. When the sound analysis result indicates that there is conversation, the target scene information is determined to be a conversation scene in the kitchen.

[0218] If the cooling time exceeds the preset cooling time, the target scene information is determined to be a scene in the kitchen where an object is turning down the heat or adding water.

[0219] In one possible implementation, the opening / closing state of the doors and windows is obtained through door sensors and the position of the window guide rods; the scene analysis unit is used for...

[0220] If the time for the weight to decrease is greater than a preset time and the pressure sensor data is less than or equal to the initial pressure threshold, the target scene information is determined to be a scene in the kitchen where an object removes a pot from the stove support. The initial pressure threshold represents the pressure on the pot support when the weight begins to decrease.

[0221] In one possible implementation, the gear adjustment information unit includes:

[0222] If the target scenario is that the range hood is not supplying enough gas or is operating under negative pressure, the setting adjustment information is determined to be to reduce the current fan setting, and the user is prompted to open any one of the doors or windows or increase the opening degree of the doors or windows.

[0223] In the case where the target scenario is a scene of stir-frying food, the gear adjustment information is determined to be the adjustment information of increasing the current fan gear.

[0224] If the target scenario information is any one of the following scenarios: the object is washing a pot, the object is removing the pot from the stove support, the pot's working temperature has not reached the smoke point, the object is talking, the object is turning down the heat, or the object is adding water, then the gear adjustment information is determined to be the adjustment information to reduce the current fan gear.

[0225] When the target scenario is food being cooked, the gear adjustment information is determined to be increasing the current fan gear, and after running for a preset time, it is adjusted back to the fan gear before the increase.

[0226] If the target scenario is that the stove's firepower is higher than the preset firepower, the gear adjustment information is determined to be the adjustment information to increase the current fan gear, and the user is prompted to reduce the firepower.

[0227] In one possible implementation, the fan speed settings include a first speed setting and a second speed setting, where the second speed setting is higher than the first speed setting.

[0228] The fan speed adjustment unit includes:

[0229] If the gear adjustment information is to reduce the current fan gear, reduce the fan gear of the range hood to the first gear.

[0230] If the gear adjustment information indicates that the current fan gear should be increased, then the range hood's fan gear should be increased to the second gear.

[0231] If the adjustment information is to increase the current fan speed and then adjust it back to the original fan speed after a preset running time, the range hood's fan speed is increased to the second speed. After running at the second speed for the preset running time, the fan speed is decreased back to the original fan speed.

[0232] This application analyzes and processes at least one of the following data: door and window sensor data, sound sensor data, pressure sensor data, distance sensor data, and temperature sensor data. It then predicts at least one of the following scenarios: the operating state of the range hood, the object operation scenario in the kitchen, the operating state of the stove, and the operating state of the cookware. Based on these scenarios, it automatically adjusts the current fan speed in real time for each scenario, ensuring that the range hood's current fan speed is always adapted to the corresponding scenario, thus improving the fume absorption effect. This range hood control method enables the range hood to operate at a more intelligent speed, while also reducing noise and improving the user experience.

[0233] It should be noted that the device provided in the above embodiments is only illustrated by the division of the above functional modules when realizing its functions. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. In addition, the device and method embodiments provided in the above embodiments belong to the same concept, and the specific implementation process can be found in the control method embodiment of the range hood, which will not be repeated here.

[0234] This application provides an electronic device, which includes a processor and a memory. The memory stores at least one instruction or at least one program. The at least one instruction or at least one program is loaded and executed by the processor to implement any of the range hood control methods provided in the above method embodiments.

[0235] Memory can be used to store software programs and modules. The processor executes various functional applications and data processing by running the software programs and modules stored in the memory. Memory can primarily include a program storage area and a data storage area. The program storage area can store the operating system, application programs required for the functions, etc.; the data storage area can store data created based on the use of the device, etc. Furthermore, memory can include high-speed random access memory, and can also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, memory can also include a memory controller to provide the processor with access to the memory.

[0236] Embodiments of this application also provide a computer-readable storage medium, which can be disposed in an electronic device to store at least one instruction or at least one program related to implementing a control method for a range hood. The at least one instruction or the at least one program is loaded and executed by the processor to implement any of the range hood control methods provided in the above-described method embodiments.

[0237] Optionally, in this embodiment, the storage medium may include, but is not limited to, various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0238] It should be noted that the order of the embodiments described above is merely for descriptive purposes and does not represent the superiority or inferiority of the embodiments. Furthermore, specific embodiments have been described above. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps described in the claims can be performed in a different order than that shown in the embodiments and still achieve the desired result. Additionally, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0239] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the apparatus embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0240] Those skilled in the art will understand that all or part of the steps of the above embodiments can be implemented by hardware or by a program instructing related hardware. The program can be stored in a computer-readable storage medium, such as a read-only memory, a disk, or an optical disk.

[0241] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A control method for a range hood, characterized in that, include: Acquire target sensor detection data; The target sensor detection data is processed by scene analysis to obtain target scene information, which includes at least one of the following: the working state scene of the range hood, the object operation scene in the kitchen, the working state scene of the stove, and the working state scene of the pot. The gear adjustment information is determined based on the target scenario information to adjust the current fan speed of the range hood. The current fan speed of the range hood is adjusted according to the aforementioned speed adjustment information; The target sensor detection data includes at least one of the following: door and window sensor detection data, sound sensor detection data, pressure sensor detection data, distance sensor detection data, and temperature sensor detection data. The door and window sensor detection data characterizes the opening and closing status of doors and windows in the kitchen environment and the air pressure state within the kitchen environment. The sound sensor detection data characterizes the sound within the kitchen environment. The pressure sensor detection data characterizes the weight change on the stove support within the kitchen environment. The distance sensor detection data characterizes the object position information of the object located in front of the range hood. The temperature sensor detection data characterizes the temperature information of the bottom of the pot on the stove support. The step of performing scene analysis processing on the target sensor detection data to obtain target scene information includes: Analyze the detection data of the door and window sensors. If the door and window analysis results indicate that the door and window are both closed, determine that the target scene information is a scene where the range hood has negative suction pressure. If the door and window analysis results indicate that either the door or the window is open and the air pressure in the kitchen environment is negative, then the target scenario information is determined to be a scenario where the range hood is not receiving enough air; wherein, the negative air pressure indicates that there is a whistling sound in the kitchen environment. If the door and window analysis results indicate that either the door or the window is open and there is no whistling sound in the kitchen environment, or if the door and window analysis results indicate that both doors and windows are open, the pressure sensor detection data is analyzed. If the pressure analysis results indicate that the weight on the stove support has increased, the target scenario information is determined to be a food-putting-in-the-pot scenario. The pressure analysis results are obtained by comparing the difference between the pressure sensor detection data and the historical sensor detection data with a preset difference. When the pressure analysis results indicate that the weight on the stove support has decreased, distance analysis is performed on the distance sensor detection data. When the distance analysis results indicate that there is an object in front of the range hood, the target scene information is determined to be the object flipping the wok and stir-frying scene. When the distance analysis results indicate that there is no object in front of the range hood, the target scene information is determined to be the object washing the pot scene. If the pressure analysis results indicate that the weight change on the stove support is less than or equal to a preset pressure difference, the target scene information is maintained as the target scene information before the analysis of the pressure sensor data.

2. The control method for a range hood according to claim 1, characterized in that, The analysis of the pressure sensor detection data includes: Determine the difference between the pressure sensor detection data and the historical sensor detection data; When the difference is greater than the preset pressure difference and the pressure sensor detection data is greater than the historical pressure sensor detection data, a pressure analysis result indicating that the weight on the stove support has increased is obtained. When the difference is greater than the preset pressure difference and the pressure sensor detection data is less than the historical pressure sensor detection data, a pressure analysis result indicating that the weight on the stove support has decreased is obtained.

3. The control method for a range hood according to claim 1, characterized in that, The target sensor detection data includes door and window sensor detection data, pressure sensor detection data, and sound sensor detection data. The target scene information is obtained by performing scene analysis processing on the target sensor detection data. The door and window sensor detection data is analyzed. If the analysis results indicate that either the door or the window is open and there is no whistling sound in the kitchen environment, or if the analysis results indicate that both the door and the window are open, pressure analysis is performed on the pressure sensor detection data. If the pressure analysis results indicate that the weight on the stove support has decreased, the time of the weight decrease is compared with a preset time threshold. The weight decrease time is used to characterize the duration of the pressure decrease on the pot support. If the time for the weight to decrease is less than or equal to a preset time, the target scene information is determined to be a scene of an object flipping a wok and stir-frying vegetables. If the time for the weight to decrease is longer than a preset time, sound analysis is performed on the sound sensor detection data. If the sound analysis result indicates that there is running water sound in the kitchen environment, the target scene information is determined to be the scene of washing a pot; if the sound analysis result indicates that there is no running water sound in the kitchen environment, the target scene information is determined to be the scene of stir-frying food in a wok.

4. The control method for a range hood according to claim 1, characterized in that, The target sensor detection data includes door and window sensor detection data, sound sensor detection data, and temperature sensor detection data. The target scene information is obtained by performing scene analysis processing on the target sensor detection data. The door and window sensor detection data is analyzed. When the door and window analysis results indicate that either the door or the window is open and there is no whistling sound in the kitchen environment, or when the door and window analysis results indicate that both the door and the window are open, the temperature sensor detection data is compared with a preset temperature threshold. The preset temperature threshold includes a first temperature threshold and a second temperature threshold, and the first temperature threshold is higher than the second temperature threshold. If the temperature sensor detects data that is greater than the first temperature threshold, the target scenario information is determined to be a scenario where the stove's firepower is higher than the preset firepower. If the temperature sensor detects data that is less than or equal to the second temperature threshold, the target scenario is determined to be a scenario where the working temperature of the cookware has not risen to the smoke point. When the temperature sensor detection data is greater than or equal to the second temperature threshold and less than the first temperature threshold, the temperature time change rate of the temperature sensor detection data is analyzed. When the temperature time change rate analysis result indicates that the heating rate is greater than the preset heating rate, the sound sensor detection data is analyzed. When the sound analysis result indicates that there is conversation, the target scene information is determined to be a conversation scene in the kitchen.

5. The control method for a range hood according to claim 4, characterized in that, If the temperature change rate analysis indicates that the cooling rate is greater than the preset cooling rate, the cooling duration is compared with the preset cooling time. The cooling duration is used to characterize the duration of temperature decrease. When the cooling time is less than or equal to the preset cooling time, the sound sensor detection data is analyzed. When the sound analysis result indicates that there is conversation, the target scene information is determined to be a conversation scene in the kitchen. If the cooling time exceeds the preset cooling time, the target scene information is determined to be a scene in the kitchen where an object is turning down the heat or adding water.

6. The control method for a range hood according to claim 3, characterized in that, The opening and closing status of the doors and windows is obtained through door sensors and the position of the window guide rail push rods. If the time for the weight to decrease is greater than a preset time and the pressure sensor data is less than or equal to an initial pressure threshold, the target scene information is determined to be a scene in the kitchen where an object removes a pot from the stove support. The initial pressure threshold represents the pressure on the pot support when the weight begins to decrease.

7. The control method for a range hood according to claim 1, characterized in that, The step of determining the current fan speed of the range hood based on the target scene information includes: If the target scenario is that the range hood is not supplying enough gas or is operating under negative pressure, the setting adjustment information is determined to be to reduce the current fan setting, and the user is prompted to open any one of the doors or windows or increase the opening degree of the doors or windows. Given that the target scenario is a scene of an object flipping a wok while stir-frying, the gear adjustment information is determined to be the adjustment information to increase the current fan gear; If the target scenario information is any one of the following scenarios: the object is washing a pot, the object is removing the pot from the stove support, the pot's working temperature has not reached the smoke point, the object is talking, the object is turning down the heat, or the object is adding water, then the gear adjustment information is determined to be the adjustment information to reduce the current fan gear. When the target scenario is food being cooked, the gear adjustment information is determined to be increasing the current fan gear, and after running for a preset time, it is adjusted back to the fan gear before the increase. If the target scenario is that the stove's firepower is higher than the preset firepower, the gear adjustment information is determined to be the adjustment information to increase the current fan gear, and the user is prompted to reduce the firepower.

8. The control method for a range hood according to claim 7, characterized in that, The fan speed settings include a first speed setting and a second speed setting, where the second speed setting is higher than the first speed setting. Adjusting the current fan speed of the range hood according to the aforementioned speed adjustment information includes: If the gear adjustment information is to reduce the current fan gear, reduce the range hood fan gear to the first gear. If the gear adjustment information indicates that the current fan gear should be increased, then the range hood's fan gear should be increased to the second gear. If the adjustment information is to increase the current fan speed and then adjust it back to the original fan speed after a preset running time, the range hood's fan speed is increased to the second speed. After running at the second speed for the preset running time, the fan speed is decreased back to the original fan speed.

9. A control system for a range hood, characterized in that, The system includes a controller (1) and a target sensor and a fan speed control device (2) that are communicatively connected to the controller (1). The target sensor is used to collect target sensor detection data; the target sensor detection data includes at least one of the following: door and window sensor detection data collected by the door and window sensor, sound sensor detection data collected by the sound sensor, pressure sensor detection data collected by the pressure sensor, distance sensor detection data collected by the distance sensor, and temperature sensor detection data collected by the temperature sensor; the door and window sensor detection data is used to characterize the opening and closing status of doors and windows in the kitchen environment and the air pressure status in the kitchen environment; the sound sensor detection data is used to characterize the sound in the kitchen environment; the pressure sensor detection data is used to characterize the weight change on the stove support in the kitchen environment; the distance sensor detection data is used to characterize the object position information of the object located in front of the range hood; and the temperature sensor detection data is used to characterize the temperature information of the bottom of the pot on the stove support. The controller (1) is used to perform scene analysis processing on the target sensor detection data to obtain target scene information, determine the gear adjustment information for adjusting the current fan gear of the range hood based on the target scene information, and control the fan gear control device (2) to adjust the fan gear of the range hood based on the gear adjustment information; it is also used to analyze the door and window sensor detection data, and when the door and window analysis results indicate that the door and window are both closed, determine that the target scene information is that the range hood is in a negative pressure scenario; when the door and window analysis results indicate that either the door or the window is open and the air pressure in the kitchen environment is negative pressure. In the given state, the target scenario is determined to be a scenario where the range hood is not receiving sufficient air. The negative air pressure indicates the presence of a whistling sound in the kitchen environment. If the door and window analysis results indicate that either the door or window is open and there is no whistling sound in the kitchen environment, or if the door and window analysis results indicate that both doors and windows are open, the pressure sensor data is analyzed. If the pressure analysis results indicate an increase in weight on the stove support, the target scenario is determined to be a scenario where food is being cooked. The pressure analysis result is obtained by comparing the difference between the pressure sensor data and historical sensor data with a preset difference. If the pressure analysis results indicate that the weight on the cooktop support has decreased, distance analysis is performed on the distance sensor data. If the distance analysis results indicate that there is an object in front of the range hood, the target scene information is determined to be the object flipping a wok while cooking. If the distance analysis results indicate that there is no object in front of the range hood, the target scene information is determined to be the object washing a pot. If the pressure analysis results indicate that the weight change on the cooktop support is less than or equal to a preset pressure difference, the target scene information is maintained as it was before the pressure sensor data analysis.

10. The control system of the range hood according to claim 9, characterized in that, The door and window sensor includes a first door and window sensor and a second door and window sensor, wherein the first door and window sensor is installed on the door and the second door and window sensor is installed on the window; The sound sensor and the distance sensor are respectively embedded in the plane of the range hood near the user, and the pressure sensor is installed on the bracket of the stove.

11. An electronic device, characterized in that, The system includes a processor and a memory, wherein the memory stores at least one instruction or at least one program, the at least one instruction or the at least one program being loaded and executed by the processor to implement the control method for the range hood as described in any one of claims 1 to 8.

12. A computer-readable storage medium storing at least one instruction or at least one program, said at least one instruction or said at least one program being loaded and executed by a processor to implement the control method for a range hood as described in any one of claims 1 to 8.

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