Range hood control method and device, electronic equipment and storage medium

Abstract

The embodiment of the invention discloses a range hood control method and device, electronic equipment and a storage medium, and the range hood control method comprises the steps that environment sound signals are collected; performing feature extraction on the environment sound signal to obtain a sound frequency feature of the environment sound signal; if the sound frequency characteristics meet the preset cooker starting sound characteristics, determining a target working mode; and starting based on the target working mode so as to execute corresponding smoke exhaust operation. Visibly, by automatically sensing starting of the cooker, the smoke exhaust function is responded and started in time, the situation that the range hood is not started in time due to human negligence, oil smoke diffusion and potential health risks are caused can be prevented, and the intelligent degree is improved.

Description

Technical Field

[0001] The present application relates to the technical field of smart home appliances, and in particular to a range hood control method, device, electronic device and storage medium. Background Art

[0002] In modern kitchen design, the oil fume problem has always been an important factor affecting the kitchen environment and family health. Traditional cooking methods are often accompanied by the generation of a large amount of oil fume, which not only pollutes the kitchen air, but also poses a potential threat to the health of residents. In order to solve this problem, various kitchen exhaust devices have appeared on the market, among which the range hood has become one of the indispensable equipment in the kitchen due to its efficient exhaust capacity.

[0003] However, traditional range hoods usually need to be turned on manually, causing users to forget to turn on the range hood during the busy cooking process, thus missing the best time to exhaust smoke, causing the smoke to spread, and the level of intelligence is low. Summary of the invention

[0004] The present application provides a range hood control method, device, equipment and storage medium, which can improve the intelligence level of the range hood, absorb oil smoke in time, and reduce the pollution of oil smoke to the kitchen environment.

[0005] In a first aspect, the present application provides a range hood control method, comprising:

[0006] Collect environmental sound signals;

[0007] Extracting features of the ambient sound signal to obtain sound frequency features of the ambient sound signal;

[0008] If the sound frequency characteristics meet the preset stove startup sound characteristics, determining the target working mode;

[0009] The startup is performed based on the target working mode to perform corresponding smoke exhaust operations.

[0010] In a second aspect, the present application provides a range hood control device, comprising:

[0011] A collection module, used for collecting environmental sound signals;

[0012] An extraction module, used to extract features from the ambient sound signal to obtain sound frequency features of the ambient sound signal;

[0013] A determination module, configured to determine a target operating mode if the sound frequency characteristic meets a preset cooker startup sound characteristic;

[0014] A starting module is used to start based on the target working mode to perform a corresponding smoke exhaust operation. Optionally, in some embodiments of the present application, the determining module includes:

[0015] A first determination submodule, configured to determine a working state of the cooker if the sound frequency characteristic meets a preset cooker startup sound characteristic;

[0016] The second determination submodule is used to determine a target working mode based on the working state of the cooker.

[0017] Optionally, in some embodiments of the present application, the first determining submodule includes:

[0018] A first acquisition submodule, configured to acquire the stove temperature information if the sound frequency characteristic meets the preset stove startup sound characteristic;

[0019] The third determining submodule is used to determine the working state of the stove based on the stove temperature information.

[0020] Cooker temperature information, the determination module includes:

[0021] A second acquisition submodule is used to acquire a stove flame image if the sound frequency feature meets a preset stove startup sound feature;

[0022] The recognition submodule recognizes the flame area of ​​the stove flame image in Chinese to obtain the flame area;

[0023] The fourth determination submodule is used to determine the working state of the cooker based on the flame area.

[0024] Optionally, in some embodiments of the present application, the acquisition module includes:

[0025] A positioning submodule, used for sound source positioning based on a microphone array;

[0026] The collection submodule is used to collect the ambient sound signal if the location of the sound source is within a preset range of a preset location.

[0027] Optionally, in some embodiments of the present application, the device further includes:

[0028] A monitoring module, used to monitor the working status of the cooker;

[0029] The adjustment module is used to adjust the target working mode based on the monitoring result to perform the corresponding smoke exhaust operation.

[0030] Optionally, in some embodiments of the present application, the monitoring result includes a cooking type, and the adjustment module is specifically configured to:

[0031] predicting an amount of smoke based on the type of cooking;

[0032] The target operating mode is adjusted based on the smoke volume to perform a corresponding smoke exhaust operation.

[0033] In a third aspect, the present application also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the above method when executing the program.

[0034] In a fourth aspect, the present application further provides a storage medium having a computer program stored thereon, wherein the computer program implements the steps of the above method when executed by a processor.

[0035] As described above, the present application provides a range hood control method, device, range hood, and storage medium, which collects ambient sound signals; extracts features of the ambient sound signals to obtain sound frequency features of the ambient sound signals; if the sound frequency features meet the preset stove startup sound features, the target working mode is determined; based on the target working mode, the start-up is performed to perform the corresponding smoke exhaust operation. In the range hood control scheme provided in the present application, the target working mode can be determined by matching the collected sound frequency features with the preset stove startup sound features, and the smoke exhaust operation can be automatically started according to the target working mode. It can be seen that the intelligent recognition mechanism of the present scheme enables the range hood to automatically sense the start-up of the stove, thereby responding in time and starting the smoke exhaust function, which can prevent the range hood from being turned on in time due to human negligence, resulting in the spread of oil smoke and potential health risks, and improve the degree of intelligence. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 This is a schematic diagram of the first scenario of the range hood control method provided in the embodiment of the present application;

[0038] Figure 2 is a schematic diagram of a second scenario of the range hood control method provided in an embodiment of the present application;

[0039] Figure 3 It is a flow chart of the range hood control method provided in the embodiment of the present application;

[0040] Figure 4 is a schematic diagram of the structure of a range hood control device provided in an embodiment of the present application;

[0041] Figure 5 It is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0043] In the following description, reference is made to “some embodiments”, which describe a subset of all possible embodiments, but it will be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0045] The present application provides a range hood control method, device and electronic equipment.

[0046] The range hood control device can be integrated into an electronic device, which can be a smart phone, tablet computer, laptop computer or desktop computer, but is not limited thereto. The electronic device can be directly or indirectly connected to the server through wired or wireless communication. The server can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers, or a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, CDN, and big data and artificial intelligence platforms. This application does not limit this.

[0047] For example, see Figure 1 to Figure 2The range hood control device is integrated on the electronic device 30. The display screen of the electronic device 30 can display the working parameters of the first air outlet, the second air outlet and the exhaust air outlet in the primary exhaust mode, the intermediate exhaust mode and the advanced exhaust mode. In addition, the user 40 can interact with the electronic device 30 by touching the display screen of the electronic device 30, such as setting the working parameters of the first air outlet, the second air outlet and the exhaust air outlet in the primary exhaust mode, the intermediate exhaust mode and the advanced exhaust mode. In the process of range hood control, the electronic device 30 and the fully embedded range hood 10 can interact through the network 20. The fully embedded range hood 10 can collect environmental sound signals; then, feature extraction is performed on the environmental sound signals to obtain the sound frequency characteristics of the environmental sound signals; then, if the sound frequency characteristics meet the preset stove startup sound characteristics, the target working mode is determined; finally, startup is performed based on the target working mode to perform the corresponding exhaust operation.

[0048] The range hood control method provided in the present application can collect environmental sound signals; perform feature extraction on the environmental sound signals to obtain the sound frequency characteristics of the environmental sound signals; if the sound frequency characteristics meet the preset stove startup sound characteristics, the target working mode is determined; based on the target working mode, the start-up is performed to perform the corresponding smoke exhaust operation. In the range hood control scheme provided in the present application, the target working mode can be determined by matching the collected sound frequency characteristics with the preset stove startup sound characteristics, and the smoke exhaust operation can be automatically started according to the target working mode. It can be seen that the intelligent recognition mechanism of the present scheme enables the range hood to automatically sense the start-up of the stove, so as to respond and start the smoke exhaust function in time, which can prevent the range hood from being turned on in time due to human negligence, resulting in the spread of oil smoke and potential health risks, and improve the degree of intelligence.

[0049] It should be noted that the order of description of the following embodiments is not intended to limit the priority order of the embodiments.

[0050] A range hood control method comprises: collecting an ambient sound signal; performing feature extraction on the ambient sound signal to obtain a sound frequency feature of the ambient sound signal; determining a target operating mode if the sound frequency feature satisfies a preset stove startup sound feature; and starting the range hood based on the target operating mode to perform a corresponding smoke exhaust operation.

[0051] See also Figure 3 , Figure 3 This is a flow chart of the range hood control method provided in this application. The specific flow of the range hood control method can be as follows:

[0052] 101: Collect environmental sound signals.

[0053] The environmental sound signal is a sound signal in the kitchen space, such as the sound of stove on / off, water sound, and human voice (such as talking, coughing, etc.).

[0054] A sound sensor (such as a microphone array) can be integrated in the range hood to collect ambient sound signals. The sound sensor can be in a low-power monitoring mode for a long time, which is also called "real-time standby" or "sleep mode".

[0055] In one embodiment, collecting the environmental sound signal includes:

[0056] Sound source localization based on microphone array;

[0057] If the location of the sound source is within a preset range of the preset location, the ambient sound signal is collected.

[0058] Multiple microphones can be embedded in the control panel or body of the range hood to form a microphone array. The positions of these microphones are carefully designed so that they can accurately capture and locate the sound source in the kitchen. When the range hood is in standby mode, the microphone array continuously monitors the sound of the surrounding environment. Through the sound source localization algorithm (such as beamforming, time difference localization method or sound source localization algorithm), the processor analyzes the time difference and intensity difference of the sound signals received by each microphone, calculates the position of the sound source, and realizes the sound source localization. For example, the position of the stove is defined as the preset position, and a preset range is set, for example, within 1 meter around the stove; the position obtained by the sound source localization algorithm is matched with the preset position to determine whether the sound source is within the preset range; if the sound source is located within the preset range of the preset position, a higher quality sound collection mode is automatically started, for example, the sensitivity of the microphone is increased or the noise reduction function is turned on. In addition, the collected environmental sound signal can also be pre-processed, including noise reduction, amplification and digitization, to facilitate subsequent sound recognition and analysis.

[0059] In this embodiment, by locating the sound source and automatically collecting environmental sound signals, the range hood can respond to the use of the stove more quickly and start the smoke exhaust function in time; it reduces the user's operating steps and provides a more convenient and intelligent kitchen experience; it can identify and respond to possible safety hazards, such as stove ignition failure or abnormal sounds, to improve kitchen safety.

[0060] 102: Extract features of the ambient sound signal to obtain sound frequency features of the ambient sound signal.

[0061] The ambient sound signal can be preprocessed first, such as denoising and pre-emphasis, to highlight the high-frequency components. Then, the ambient signal is framed and a Hamming window is applied to each frame. Next, a fast Fourier transform (FFT) is performed on the windowed signal to obtain a frequency domain signal. Finally, the frequency domain signal is processed by a Mel filter bank, the logarithmic energy of the Mel spectrogram is calculated, and the Mel frequency cepstral coefficients (MFCCs) are extracted as sound frequency features through a discrete cosine transform (DCT).

[0062] 103: If the sound frequency characteristic meets the preset stove startup sound characteristic, determine the target working mode.

[0063] Compare the similarity between the sound frequency feature and the preset stove startup sound feature. If the similarity meets the preset threshold, it is considered that the sound frequency feature matches the stove startup sound feature, so that the preset primary exhaust mode of the range hood can be used as the target working mode. In the primary exhaust mode, the exhaust fan of the range hood runs at a lower power to adapt to the amount of oil smoke generated during light cooking, which is conducive to reducing energy consumption while keeping the kitchen air clean. For example, for a small kitchen of about 3㎡, the air volume of the primary exhaust mode can be set to no less than 18m3 / min; for a kitchen of 4-5㎡, the air volume can be set to no less than 21m3 / min.

[0064] In one embodiment, if Figure 2 As shown, the range hood includes a first air outlet 110 and a second air outlet 120 symmetrically arranged relative to an exhaust port 130, and the exhaust port is located directly above the gas stove 50. The first air outlet 110 is an outlet that blows downward and can form a wind curtain, which is used to intercept smoke escaping to the left, and the second air outlet 120 is an outlet that blows downward and can form a wind curtain, which is used to intercept smoke escaping to the right, and the exhaust port 130 is an air intake port for exhausting oil smoke. The primary exhaust mode sets the blowing angle, blowing strength and blowing wind speed of the first and second air outlets, as well as the parameter information such as the suction wind speed of the third air outlet.

[0065] In one embodiment, if the sound frequency characteristic meets the preset cooker startup sound characteristic, determining the target working mode includes:

[0066] If the sound frequency characteristic meets the preset stove startup sound characteristic, determining the stove working state;

[0067] A target operating mode is determined based on the operating state of the cooker.

[0068] The working state of the stove may include whether the stove is turned on, whether flame is being generated, and the intensity of the flame.

[0069] For example, the range hood has a built-in microphone array, which uses sound recognition technology to capture the "ticking" sound generated when the stove is ignited. Through the preset sound frequency feature library, it is determined that the sound meets the stove ignition characteristics and the current ignition gear (for example, the first gear, the second gear, and the third gear, which can be determined according to the actual application scenario), so as to determine that the stove is in the ignition state; and the target working mode is determined according to the ignition gear in the ignition state, such as the first gear, which is the primary smoke exhaust mode, the second gear is the intermediate smoke exhaust mode, and the third gear is the advanced smoke exhaust mode; the primary smoke exhaust mode, the intermediate smoke exhaust mode, and the advanced smoke exhaust mode set the corresponding first air outlet, the second air outlet The blowing angle, blowing force and blowing wind speed and the control of the third air outlet The suction wind speed and other parameter information. Exemplarily, the primary smoke exhaust mode (first gear): the first air outlet: the blowing angle is set to 30°, the blowing force is set to low speed (500m3 / h), and the blowing speed is set to 2m / s. The second air outlet: the same as the first air outlet. Third air outlet: The suction speed is set to low speed (2.5m / s). Intermediate smoke exhaust mode (second gear): First air outlet: The blowing angle is set to 45°, the blowing intensity is set to medium speed (800m3 / h), and the blowing speed is set to 3m / s. Second air outlet: Same as the first air outlet.

[0070] Third air outlet: The suction speed is set to medium speed (3.5m / s). Advanced smoke exhaust mode (three gears): First air outlet: The blowing angle is set to 60°, the blowing force is set to high speed (1200m3 / h), and the blowing speed is set to 4m / s. Second air outlet: Same as the first air outlet. Third air outlet: The suction speed is set to high speed (5m / s).

[0071] Optionally, a flame sensor, such as a photoelectric sensor, is installed on the cooker to detect the intensity and existence of the flame. When the sensor detects a flame signal, the cooker is determined to be in a cooking state based on the flame signal, thereby determining the target exhaust mode, and sending a signal to the range hood to start the corresponding exhaust mode. For example, if the cooking state of the cooker is slow cooking, the target exhaust mode is the primary exhaust mode.

[0072] In this embodiment, the range hood can intelligently respond to the ignition status and ignition position of the stove, automatically start and adjust the smoke exhaust strategy, improve the smoke exhaust efficiency, and reduce energy waste, providing users with a more comfortable and safe cooking environment.

[0073] In one embodiment, if the sound frequency characteristic meets a preset stove startup sound characteristic, determining the stove working state includes:

[0074] If the sound frequency characteristic meets the preset stove startup sound characteristic, obtaining the stove temperature information;

[0075] The working state of the stove is determined based on the stove temperature information.

[0076] The stove temperature information refers to temperature information determined according to the heat generated by fire smoke.

[0077] For example, a temperature sensor can be installed near the stove to monitor the heat generated by the flame. The working state of the stove is judged by the change of temperature, and the working state of the stove is determined according to the temperature, and the target exhaust mode is determined according to the working state of the stove. When the temperature is within the first threshold range, the working state of the stove is low temperature, and the target working mode is the primary exhaust mode; when the temperature is within the second threshold range, the working state of the stove is medium temperature, and the target working mode is in the intermediate exhaust mode; when the temperature is within the third range, the working state of the stove is high temperature, and the target working mode is in the advanced exhaust mode. Exemplarily, the first threshold range (low temperature): for example, 100°C-200°C, corresponding to the primary exhaust mode; the second threshold range (medium temperature): for example, 201°C-400°C, corresponding to the intermediate exhaust mode; the third threshold range (high temperature): for example, above 401°C, corresponding to the advanced exhaust mode; primary exhaust mode: air outlet angle: set the blowing angle of the first air outlet and the second air outlet to 30° to promote the rise of oil smoke. Blowing force: The wind force is set to a low speed, for example, 500 cubic meters per hour (m3 / h). Blowing degree: The wind speed is set to 2 meters per second (m / s) to gently guide the oil smoke to the air intake port. The third air intake speed: Set to a low speed, for example, 2.5 meters per second (m / s) to avoid affecting the flame. Intermediate smoke exhaust mode: Air outlet angle: Set the blowing angle of the first and second air outlets to 45° to enhance the blowing effect. Blowing force: The wind force is set to a medium speed, for example, 800m3 / h. Blowing degree: The wind speed is set to 3m / s to guide the oil smoke more effectively. The third air intake speed: Set to a medium speed, for example, 3.5m / s to enhance the smoking effect. Advanced smoke exhaust mode: Air outlet angle: Set the blowing angle of the first and second air outlets to 60° to maximize the blowing coverage area. Blowing force: The wind force is set to high speed, for example, 1200m3 / h. Blowing degree: The wind speed is set to 4m / s to quickly guide a large amount of oil smoke. The third air outlet suction wind speed: Set to high speed, for example, 5m / s, to strongly smoke, suitable for cooking methods such as stir-frying.

[0078] In this embodiment, the range hood can automatically start according to the heat generated during cooking and adjust the smoke exhaust strategy to improve the smoke exhaust efficiency while reducing energy waste, providing users with a more comfortable and safe cooking environment.

[0079] In one embodiment, if the sound frequency characteristic meets a preset stove startup sound characteristic, determining the stove working state includes:

[0080] If the sound frequency characteristic meets the preset stove startup sound characteristic, acquiring a stove flame image;

[0081] Performing flame area recognition on the stove flame image to obtain the flame area;

[0082] The working state of the cooker is determined based on the flame area.

[0083] Integrate sound recognition and image recognition technologies in the range hood or kitchen monitoring system to realize intelligent monitoring of the working status of the stove. Specifically, when the sound frequency characteristics meet the preset stove startup sound characteristics, the system automatically triggers the camera installed near the stove to start capturing the image of the stove flame and obtain the stove flame image; the stove flame image is subjected to noise reduction, enhancement and binarization processing to highlight the flame outline; the stove flame image is identified using image segmentation technology, such as threshold segmentation or machine learning algorithm, to determine the flame area; the area of ​​the flame area is calculated through image analysis technology to obtain the flame area; and different working status thresholds of the stove are set according to the size of the flame area. For example, low fire state: the flame area is less than the set threshold, such as less than 50 square centimeters, indicating that the stove is in a low fire or heat preservation state. Medium fire state: the flame area is within the medium threshold range, such as between 50 and 100 square centimeters, indicating that the stove is in a medium fire cooking state. High fire state: the flame area is greater than the high threshold, such as greater than 100 square centimeters, indicating that the stove is in a high fire cooking or boiling state. Exemplarily, primary smoke exhaust mode (low fire state): wind setting: the range hood is adjusted to low speed operation, for example, the exhaust volume is set to 400 cubic meters per hour (m3 / h). Air outlet angle: the blowing angle of the first and second air outlets is set to 15°, and the suction wind speed of the third air outlet is set to 1.5 meters per second (m / s). Intermediate smoke exhaust mode (medium fire state): wind setting: the range hood is adjusted to medium speed operation, for example, the exhaust volume is set to 800m3 / h. Air outlet angle: the blowing angle of the first and second air outlets is set to 30°, and the suction wind speed of the third air outlet is set to 2.5m / s. Advanced smoke exhaust mode (high fire state): wind setting: the range hood is adjusted to high speed operation, for example, the exhaust volume is set to 1200m3 / h. Air outlet angle: the blowing angle of the first and second air outlets is set to 45°, and the suction wind speed of the third air outlet is set to 3.5m / s.

[0084] In this embodiment, the range hood can automatically start and adjust the smoke exhaust strategy according to the flame area of ​​the stove, thereby improving the smoke exhaust efficiency and reducing energy waste, thereby providing users with a more comfortable and safe cooking environment.

[0085] 104: Starting based on the target working mode to perform corresponding smoke exhaust operations.

[0086] After the target working mode is determined, the intelligent control system of the range hood will be activated. The intelligent control system can be a microprocessor or embedded system built into the range hood, such as an STM32 controller. The intelligent control system is started according to the parameters of the primary smoke exhaust mode through a preset logic or algorithm to perform the corresponding smoke exhaust operation. For example, the first air outlet, the second air outlet and the third air outlet are started according to the blowing angle, blowing force and blowing wind speed of the first air outlet and the second air outlet in the primary smoke exhaust mode and the suction wind speed of the third air outlet.

[0087] In one embodiment, after the starting based on the target working mode to perform the corresponding smoke exhaust operation, the method further includes:

[0088] Monitor the working status of the stove;

[0089] The target operating mode is adjusted based on the monitoring result to perform corresponding smoke exhaust operations.

[0090] The built-in microphone of the range hood continuously captures the ambient sound, and monitors the ignition sound and burning sound of the stove through sound recognition technology; the camera installed above the stove captures the flame image in real time, and monitors the existence and size of the flame through image processing technology; the flame sensor and temperature sensor are used to monitor the working status of the stove in real time, including the presence of flame and temperature changes. Based on this, the central processing unit of the range hood receives data from the microphone, camera and sensor, and performs real-time analysis to obtain monitoring results; based on the monitoring results, such as flame size, temperature and sound characteristics, the current cooking state is intelligently judged, and compared with the preset state threshold to determine the working state of the stove; when a low fire or warm-keeping state is detected, the range hood automatically switches to the primary exhaust mode and exhausts smoke at a lower wind force and wind speed; when a medium-fire cooking state is detected, the range hood switches to the intermediate exhaust mode and exhausts smoke at a medium wind force and wind speed; when a high-fire cooking or boiling state is detected, the range hood switches to the advanced exhaust mode and exhausts smoke at the maximum wind force and wind speed. The range hood can automatically adjust parameters such as wind force, wind speed and air outlet angle according to a determined working mode (such as primary smoke exhaust mode, intermediate smoke exhaust mode and advanced smoke exhaust mode) to perform corresponding smoke exhaust operations.

[0091] In this embodiment, by real-time monitoring of the working status of the stove and automatically adjusting the exhaust mode, oil smoke can be removed more effectively and the kitchen air quality can be improved; the exhaust intensity can be adjusted according to actual cooking needs to avoid excessive energy consumption and achieve energy saving; the real-time monitoring and automatic adjustment functions can prevent the accumulation of oil smoke caused by forgetting to turn on the range hood, reducing the risk of fire; and the user does not need to manually switch the range hood mode, which improves the convenience of use, allows users to focus more on cooking, and improves the user experience.

[0092] In one embodiment, the monitoring result includes a cooking type, and adjusting the target working mode based on the monitoring result to perform a corresponding smoke exhaust operation includes:

[0093] predicting an amount of smoke based on the type of cooking;

[0094] The target operating mode is adjusted based on the smoke volume to perform a corresponding smoke exhaust operation.

[0095] The camera on the range hood can capture the image on the stove in real time, and the working state of the stove can be identified by image recognition technology (such as machine learning model). The working state of the stove indicates the current cooking state of the stove, which includes cooking types, such as frying, stewing, deep-frying, etc.; according to the cooking type and real-time monitoring data, the amount of smoke in the cooking process is predicted using algorithms (such as linear regression, neural network); the range hood automatically sets the exhaust mode according to the predicted amount of smoke. For example, for cooking methods such as frying and deep-frying that may produce a lot of smoke, the range hood switches to the advanced exhaust mode; for methods such as stewing that produce less smoke, it switches to the primary or intermediate exhaust mode. In addition, the range hood can adjust the blowing angles of the first and second air outlets and the suction wind speed of the third air outlet in the primary exhaust mode, the intermediate exhaust mode and the advanced exhaust mode in response to the user's parameter settings to optimize the exhaust efficiency.

[0096] In this embodiment, by predicting the amount of smoke and automatically adjusting the smoke exhaust mode, oil smoke can be removed more effectively and the kitchen air quality can be improved; the real-time monitoring and automatic adjustment functions can prevent the accumulation of oil smoke caused by forgetting to turn on the range hood, reducing the risk of fire; it can also avoid excessive energy consumption and achieve energy saving.

[0097] The above is the range hood control process of this application.

[0098] As described above, the present application provides a range hood control method, which collects environmental sound signals; extracts features of the environmental sound signals to obtain sound frequency features of the environmental sound signals; if the sound frequency features meet the preset stove startup sound features, the target working mode is determined; based on the target working mode, the start-up is performed to perform the corresponding smoke exhaust operation. In the range hood control scheme provided in the present application, the target working mode can be determined by matching the collected sound frequency features with the preset stove startup sound features, and the smoke exhaust operation can be automatically started according to the target working mode. It can be seen that the intelligent recognition mechanism of the present scheme enables the range hood to automatically sense the start-up of the stove, thereby responding in time and starting the smoke exhaust function, which can prevent the range hood from being turned on in time due to human negligence, resulting in the spread of oil smoke and potential health risks, and improve the degree of intelligence.

[0099] In order to better implement the range hood control method of the present application embodiment, the present invention also provides a range hood control device based on the above (referred device for short). The meanings of the terms are the same as those in the range hood control method, and the specific implementation details can refer to the description in the method embodiment.

[0100] See also Figure 4 , Figure 4 This is a schematic diagram of the structure of the range hood control device provided in the embodiment of the present application, wherein the recommendation device may include a collection module 201, an extraction module 202, a determination module 203 and a start module 204, which may be specifically as follows:

[0101] The acquisition module 201 is used to acquire environmental sound signals;

[0102] An extraction module 202 is used to extract features from the ambient sound signal to obtain sound frequency features of the ambient sound signal;

[0103] A determination module 203 is used to determine a target working mode if the sound frequency characteristic meets a preset cooker startup sound characteristic;

[0104] The starting module 204 is used to start based on the target working mode to perform corresponding smoke exhaust operations.

[0105] In this embodiment, by collecting environmental sound signals; extracting features of the environmental sound signals to obtain sound frequency features of the environmental sound signals; if the sound frequency features meet the preset stove startup sound features, the target working mode is determined; based on the target working mode, the startup is performed to perform the corresponding smoke exhaust operation. In the range hood control scheme provided in the present application, the target working mode can be determined by matching the collected sound frequency features with the preset stove startup sound features, and the smoke exhaust operation can be automatically started according to the target working mode. It can be seen that the intelligent recognition mechanism of this scheme enables the range hood to automatically sense the start of the stove, so as to respond and start the smoke exhaust function in time, which can prevent the range hood from being turned on in time due to human negligence, resulting in the spread of oil smoke and potential health risks, and improve the degree of intelligence.

[0106] Optionally, in some embodiments of the present application, the determining module includes:

[0107] A first determination submodule, configured to determine a working state of the cooker if the sound frequency characteristic meets a preset cooker startup sound characteristic;

[0108] The second determination submodule is used to determine a target working mode based on the working state of the cooker.

[0109] Optionally, in some embodiments of the present application, the first determining submodule includes:

[0110] A first acquisition submodule, configured to acquire the stove temperature information if the sound frequency characteristic meets the preset stove startup sound characteristic;

[0111] The third determining submodule is used to determine the working state of the stove based on the stove temperature information.

[0112] Cooker temperature information, the determination module includes:

[0113] A second acquisition submodule is used to acquire a stove flame image if the sound frequency feature meets a preset stove startup sound feature;

[0114] The recognition submodule recognizes the flame area of ​​the stove flame image in Chinese to obtain the flame area;

[0115] The fourth determination submodule is used to determine the working state of the cooker based on the flame area.

[0116] Optionally, in some embodiments of the present application, the acquisition module includes:

[0117] A positioning submodule, used for sound source positioning based on a microphone array;

[0118] The collection submodule is used to collect the ambient sound signal if the location of the sound source is within a preset range of a preset location.

[0119] Optionally, in some embodiments of the present application, the device further includes:

[0120] A monitoring module, used to monitor the working status of the cooker;

[0121] The adjustment module is used to adjust the target working mode based on the monitoring result to perform the corresponding smoke exhaust operation.

[0122] Optionally, in some embodiments of the present application, the monitoring result includes a cooking type, and the adjustment module is specifically configured to:

[0123] predicting an amount of smoke based on the type of cooking;

[0124] The target operating mode is adjusted based on the smoke volume to perform a corresponding smoke exhaust operation.

[0125] It should be noted that in the embodiment of the present application, if the above method is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a U disk, a mobile hard disk, a read-only memory (ROM, Read Only Memory), a disk or an optical disk. In this way, the embodiment of the present application is not limited to any specific combination of hardware and software.

[0126] Correspondingly, an embodiment of the present application also discloses a storage medium storing a computer program that can be loaded by a processor and execute the above method.

[0127] The present application also discloses an electronic device, such as Figure 4 As shown, it includes a processor 100, at least one communication bus 200, a user interface 300, at least one external communication interface 400 and a memory 500. The processor 100 is used to provide computing and control capabilities, the communication bus 200 is configured to achieve connection and communication between these components, the user interface 300 may include a display screen, the external communication interface 400 may include a standard wired interface and a wireless interface, and the memory 500 stores a method for controlling a range hood. The processor 100 is also used to adopt the above method when executing the method for controlling a range hood stored in the memory 500.

[0128] Optionally, in some embodiments, the processor implements the following steps when executing the computer program:

[0129] Collecting environmental sound signals; extracting features of the environmental sound signals to obtain sound frequency features of the environmental sound signals; if the sound frequency features meet the preset stove startup sound features, determining the target working mode; starting based on the target working mode to perform corresponding smoke exhaust operations.

[0130] In this embodiment, the collected sound frequency characteristics can be matched with the preset stove startup sound characteristics to determine the target working mode, and the smoke exhaust operation can be automatically started according to the target working mode. It can be seen that the intelligent recognition mechanism of this solution enables the range hood to automatically sense the start of the stove, so as to respond and start the smoke exhaust function in time, which can prevent the range hood from being turned on in time due to human negligence, resulting in the spread of oil smoke and potential health risks, and improve the degree of intelligence.

[0131] It should be understood that "one embodiment" or "some embodiments" mentioned throughout the specification means that specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application. The above-mentioned sequence numbers of the embodiments of the present application are for description only and do not represent the advantages and disadvantages of the embodiments.

[0132] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0133] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as: multiple units or components can be combined, or can be integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed can be through some interfaces, and the indirect coupling or communication connection of the devices or units can be electrical, mechanical or other forms.

[0134] The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units; they may be located in one place or distributed on multiple network units; some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0135] In addition, all functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may be a separate unit, or two or more units may be integrated into one unit; the above-mentioned integrated units may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0136] A person of ordinary skill in the art can understand that: all or part of the steps of implementing the above-mentioned method embodiment can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps of the above-mentioned method embodiment; and the aforementioned storage medium includes: various media that can store program codes, such as mobile storage devices, ROMs, magnetic disks or optical disks.

[0137] Alternatively, if the above-mentioned integrated unit of the present application is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application can essentially or in other words, the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a device to execute all or part of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as mobile storage devices, ROMs, magnetic disks or optical disks.

[0138] The above disclosure is only the preferred embodiment of the present application, which certainly cannot be used to limit the scope of rights of the present application. Therefore, equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A range hood control method, characterized in that: include: Collect environmental sound signals; Extracting features of the ambient sound signal to obtain sound frequency features of the ambient sound signal; If the sound frequency characteristics meet the preset stove startup sound characteristics, determining the target working mode; The startup is performed based on the target working mode to perform corresponding smoke exhaust operations.

2. The range hood control method according to claim 1, characterized in that: If the sound frequency characteristic meets the preset stove startup sound characteristic, determining the target working mode includes: If the sound frequency characteristic meets the preset stove startup sound characteristic, determining the stove working state; A target operating mode is determined based on the operating state of the cooker.

3. The range hood control method according to claim 2, characterized in that: If the sound frequency characteristic meets the preset stove startup sound characteristic, determining the stove working state includes: If the sound frequency characteristic meets the preset stove startup sound characteristic, obtaining the stove temperature information; The working state of the stove is determined based on the stove temperature information.

4. The range hood control method according to claim 2, characterized in that: If the sound frequency characteristic meets the preset stove startup sound characteristic, determining the stove working state includes: If the sound frequency characteristic meets the preset stove startup sound characteristic, acquiring a stove flame image; Performing flame area recognition on the stove flame image to obtain the flame area; The working state of the cooker is determined based on the flame area.

5. The range hood control method according to claim 1, characterized in that: The collecting of environmental sound signals comprises: Sound source localization based on microphone array; If the location of the sound source is within a preset range of the preset location, the ambient sound signal is collected.

6. The range hood control method according to claim 1, characterized in that: After the starting based on the target working mode to perform the corresponding smoke exhaust operation, the method further includes: Monitor the working status of the stove; The target operating mode is adjusted based on the monitoring result to perform corresponding smoke exhaust operations.

7. The range hood control method according to claim 6, characterized in that: The monitoring result includes a cooking type, and adjusting the target working mode based on the monitoring result to perform a corresponding smoke exhaust operation includes: predicting an amount of smoke based on the type of cooking; The target operating mode is adjusted based on the smoke volume to perform a corresponding smoke exhaust operation.

8. A range hood control device, characterized in that: include: A collection module, used for collecting environmental sound signals; An extraction module, used to extract features from the ambient sound signal to obtain sound frequency features of the ambient sound signal; A determination module, configured to determine a target operating mode if the sound frequency characteristic meets a preset cooker startup sound characteristic; A starting module is used to start based on the target working mode to perform corresponding smoke exhaust operations.

9. A storage medium, characterized in that: A computer program is stored thereon, wherein when the computer program is executed by a processor, the steps of the range hood control method according to any one of claims 1 to 7 are implemented.

10. An electronic device, characterized in that: include: The method comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps of the range hood control method according to any one of claims 1 to 7 are implemented.

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