Control method of intelligent extractor hood, intelligent extractor hood and computer equipment

Abstract

The invention relates to a control method of an intelligent extractor hood, the intelligent extractor hood and computer device.The control method of the intelligent extractor hood comprises the steps that phase gradient analysis is conducted on received sound vortex waves disturbed by user gestures, and corresponding phase gradient vectors are obtained; according to the phase gradient vector, identifying the gesture category of the user gesture; and controlling the intelligent extractor hood to execute corresponding target operation according to the gesture category. The intelligent range hood comprises a sound wave receiving and transmitting device, and the sound wave receiving and transmitting device is used for transmitting sound vortex waves and receiving the sound vortex waves disturbed by user gestures. Various gesture types can be recognized by utilizing the difference of phase disturbance of different gesture types to sound vortex waves, and the intelligent range hood is controlled by the various gesture types.

Description

Technical Field

[0001] This application relates to the field of smart home appliance control, and in particular to a control method for a smart range hood, a smart range hood, and computer equipment. Background Technology

[0002] Range hoods are essential appliances for people to remove cooking fumes daily. Currently available range hoods come in two types: touch switches and gesture recognition switches. Touch switches tend to accumulate grease and dirt, so gesture recognition switches are preferred by users.

[0003] Current range hood products typically use gesture recognition switches with a gesture recognition window on the panel, relying on optics or radar for gesture recognition. This method suffers from the limitation of only being able to recognize a single type of gesture.

[0004] There is currently no effective solution to the problem of limited recognizable gesture types in related technologies. Summary of the Invention

[0005] This embodiment provides a control method for an intelligent range hood, an intelligent range hood, and a computer device to solve the problem of limited identifiable gesture types in related technologies.

[0006] In a first aspect, this embodiment provides a control method for an intelligent range hood, the intelligent range hood including a sound wave transceiver; the sound wave transceiver is used to emit acoustic vortex waves and receive the acoustic vortex waves after being disturbed by a user's gesture; the method includes:

[0007] The received acoustic vortex wave, after being disturbed by the user's gesture, is subjected to phase gradient analysis to obtain the corresponding phase gradient vector.

[0008] Based on the phase gradient vector, the gesture category of the user's gesture is identified;

[0009] Based on the gesture category, the smart range hood is controlled to perform the corresponding target operation.

[0010] In some embodiments, the acoustic transceiver includes at least two horizontally arranged receiving array elements and / or two vertically arranged receiving array elements; the step of performing phase gradient analysis on the received acoustic vortex wave after user gesture perturbation to obtain the corresponding phase gradient vector includes:

[0011] The horizontal phase difference is determined based on the acoustic vortex waves received by the two horizontally arranged receiving array elements.

[0012] Based on the horizontal phase difference and the distance between the two horizontally arranged receiving array elements, the horizontal phase gradient vector is determined as the horizontal component of the phase gradient vector; and / or,

[0013] The vertical phase difference is determined based on the acoustic vortex waves received by the two vertically arranged receiving array elements.

[0014] Based on the vertical phase difference and the distance between the two vertically arranged receiving array elements, the vertical component of the phase gradient vector is obtained.

[0015] In some embodiments, identifying the gesture category of the user gesture based on the phase gradient vector includes:

[0016] Determine a preset phase gradient feature that matches the horizontal and / or vertical components of the phase gradient vector; the preset phase gradient feature is associated with different user gestures;

[0017] The gesture category of the user gesture is determined based on the preset phase gradient features that match the horizontal and / or vertical components.

[0018] In some embodiments, the control method for the intelligent range hood further includes:

[0019] Based on the phase gradient vector, the modal diffusion of the acoustic vortex wave is determined;

[0020] The corresponding oil fume concentration is determined based on the modal diffusion of the acoustic vortex wave and the preset calibration coefficient;

[0021] The airflow level of the range hood is controlled according to the concentration of cooking fumes.

[0022] In some embodiments, determining the modal diffusion of the acoustic vortex wave based on the phase gradient vector includes:

[0023] Based on the closed propagation path of the acoustic vortex wave, the phase gradient vector is integrated to obtain the modal diffusion of the acoustic vortex wave.

[0024] In some embodiments, controlling the airflow level of the range hood based on the oil fume concentration includes:

[0025] The airflow level of the range hood is controlled according to the oil fume concentration and the preset oil fume threshold.

[0026] Secondly, this embodiment provides an intelligent range hood, which includes a sound wave transceiver and a controller;

[0027] The acoustic transceiver is used to transmit acoustic vortex waves and receive the acoustic vortex waves after being disturbed by the user's gestures.

[0028] The controller is used to execute the control method of the intelligent range hood described in any one of the first aspects above.

[0029] In some embodiments, the acoustic transceiver includes an outer acoustic emitting area and an inner acoustic receiving area; the inner acoustic receiving area includes at least two horizontally arranged receiving array elements and / or two vertically arranged receiving array elements; the outer acoustic emitting area is used to emit the acoustic vortex wave; the inner acoustic receiving area is used to receive the acoustic vortex wave after being disturbed by the user's gesture.

[0030] Thirdly, this embodiment provides a computer device including a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to perform the steps of the control method for the intelligent range hood described in the first aspect.

[0031] Fourthly, this embodiment provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the control method for the intelligent range hood described in the first aspect.

[0032] Compared with related technologies, the control method, intelligent range hood, and computer device provided in this embodiment analyze the phase gradient of the received acoustic vortex wave after being disturbed by the user's gesture to obtain the corresponding phase gradient vector; based on the phase gradient vector, the gesture category of the user's gesture is identified; and based on the gesture category, the intelligent range hood is controlled to perform the corresponding target operation. It can utilize the differences in the phase disturbance of the acoustic vortex wave by different gesture categories to identify multiple gesture categories, thus realizing multi-gesture category control of the intelligent range hood.

[0033] Details of one or more embodiments of this application are set forth in the following drawings and description to make other features, objects and advantages of this application more readily apparent. Attached Figure Description

[0034] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0035] Figure 1This is a hardware structure block diagram of the terminal of the control method for the intelligent range hood in this embodiment;

[0036] Figure 2 This is a flowchart of the control method for the intelligent range hood in this embodiment;

[0037] Figure 3 This is a flowchart of the control method for the intelligent range hood in this embodiment;

[0038] Figure 4 This is a schematic diagram of the acoustic transceiver device of the intelligent range hood in this embodiment. Detailed Implementation

[0039] To better understand the purpose, technical solution, and advantages of this application, the application is described and illustrated below in conjunction with the accompanying drawings and embodiments.

[0040] Unless otherwise defined, the technical or scientific terms used in this application shall have the general meaning understood by one of ordinary skill in the art to which this application pertains. Words such as “a,” “an,” “an,” “the,” “the,” and “these” used in this application do not indicate quantitative limitation and may be singular or plural. The terms “comprising,” “including,” “having,” and any variations thereof used in this application are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that comprises a series of steps or modules (units) is not limited to the listed steps or modules (units) but may include steps or modules (units) not listed, or may include other steps or modules (units) inherent to these processes, methods, products, or devices. Words such as “connected,” “linked,” and “coupled” used in this application are not limited to physical or mechanical connections but may include electrical connections, whether direct or indirect. “Multiple” used in this application refers to two or more. “And / or” describes the relationship between related objects, indicating that three relationships may exist; for example, “A and / or B” can represent: A alone, A and B simultaneously, and B alone. Normally, the character " / " indicates that the objects before and after it are in an "or" relationship. The terms "first," "second," "third," etc., used in this application are merely to distinguish similar objects and do not represent a specific order of objects.

[0041] The method embodiments provided in this example can be executed on a terminal, computer, or similar computing device. For example, it can run on a terminal. Figure 1 This is a hardware structure block diagram of the terminal of the control method for the intelligent range hood in this embodiment. For example... Figure 1 As shown, a terminal may include one or more ( Figure 1Only one is shown in the diagram. A processor 102 and a memory 104 for storing data are also included. The processor 102 may be, but is not limited to, a microprocessor (MCU) or a programmable logic device (FPGA). The terminal may also include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that… Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the terminal described above. For example, the terminal may also include components that are larger than... Figure 1 The more or fewer components shown, or having the same Figure 1 The different configurations shown are illustrated.

[0042] The memory 104 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the control method of the intelligent range hood in this embodiment. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, thereby implementing the above-described method. The memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to the terminal via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0043] The transmission device 106 is used to receive or send data via a network. This network includes a wireless network provided by the terminal's communication provider. In one example, the transmission device 106 includes a Network Interface Controller (NIC), which can connect to other network devices via a base station to communicate with the Internet. In another example, the transmission device 106 can be a Radio Frequency (RF) module used for wireless communication with the Internet.

[0044] This embodiment provides a control method for an intelligent range hood. Figure 2 This is a flowchart of the control method for the intelligent range hood in this embodiment, as shown below. Figure 2 As shown, the process includes the following steps:

[0045] Step S201: Perform phase gradient analysis on the received acoustic vortex wave after being disturbed by the user's gesture to obtain the corresponding phase gradient vector.

[0046] Specifically, the smart range hood includes a sound wave transceiver device for emitting and receiving sound vortex waves disturbed by user gestures. The original sound vortex wave is emitted by the smart range hood's sound wave transceiver device. The user's gesture passes through this original sound vortex wave, generating a perturbed sound vortex wave. The sound wave transceiver device receives this perturbed sound vortex wave. The smart range hood's controller performs phase gradient analysis on the received perturbed sound vortex wave to obtain the corresponding phase gradient vector.

[0047] Step S202: Identify the gesture category of the user's gesture based on the phase gradient vector.

[0048] Specifically, the controller of the smart range hood identifies the gesture category of the user's gesture based on the phase gradient vector. First, it determines a preset phase gradient feature that matches the horizontal and / or vertical components of the phase gradient vector. This preset phase gradient feature is associated with different user gestures. Then, based on the preset phase gradient feature matching the horizontal and / or vertical components, the gesture category of the user's gesture is determined.

[0049] Step S203: Based on the gesture category, control the smart range hood to perform the corresponding target operation.

[0050] Specifically, the controller of the smart range hood controls the hood to perform corresponding target operations based on the gesture category. These gesture categories include swiping right, swiping left, swiping up, swiping down, drawing a clockwise circle, and drawing a counter-clockwise circle. When the gesture is a swiping right, the controller turns the range hood on; when swiping left, it turns it off; when swiping up, it brightens the lights; when swiping down, it dims the lights; when drawing a clockwise circle, it increases the fan speed; and when drawing a counter-clockwise circle, it decreases the fan speed.

[0051] In this embodiment, the phase gradient of the received acoustic vortex wave, after being disturbed by the user's gesture, is analyzed to obtain the corresponding phase gradient vector. Based on the phase gradient vector, the gesture category of the user's gesture is identified. Based on the gesture category, the smart range hood is controlled to perform the corresponding target operation. It can utilize the differences in phase disturbance of the acoustic vortex wave by different gesture categories to identify multiple gesture categories, thus enabling control of the smart range hood by multiple gesture categories.

[0052] In some embodiments, the acoustic transceiver includes at least two horizontally arranged receiving array elements and / or two vertically arranged receiving array elements; step S201, which involves performing phase gradient analysis on the received acoustic vortex wave after user gesture perturbation to obtain the corresponding phase gradient vector, includes the following steps:

[0053] The horizontal phase difference is determined based on the acoustic vortex waves received by two horizontally arranged receiving elements; the horizontal phase gradient vector is determined as the horizontal component of the phase gradient vector based on the horizontal phase difference and the distance between the two horizontally arranged receiving elements; and / or,

[0054] The vertical phase difference is determined based on the acoustic vortex waves received by two vertically arranged receiving array elements. The vertical phase gradient vector is obtained as the vertical component of the phase gradient vector based on the vertical phase difference and the distance between the two vertically arranged receiving array elements.

[0055] Specifically, the acoustic transceiver device of the intelligent range hood includes at least two horizontally arranged receiving array elements and / or two vertically arranged receiving array elements. The two horizontally arranged receiving array elements receive acoustic vortex waves disturbed by user gestures, thereby obtaining a horizontal phase difference. Based on this horizontal phase difference and the distance between the two horizontally arranged receiving array elements, a horizontal phase gradient vector, i.e., the horizontal component of the phase gradient vector, can be obtained. Similarly, the two vertically arranged receiving array elements receive acoustic vortex waves disturbed by user gestures, thereby obtaining a vertical phase difference. Based on this vertical phase difference and the distance between the two vertically arranged receiving array elements, a vertical phase gradient vector, i.e., the vertical component of the phase gradient vector, can be obtained. The receiving array element can be a MEMS microphone.

[0056] For example, the horizontally arranged MEMS microphones 1 and 2 respectively receive the phases of the acoustic vortex waves after being disturbed by the user's gesture. , Horizontal phase difference for and The difference is... The distance between MEMS microphone 1 and MEMS microphone 2 is... Thus, the horizontal component of the phase gradient vector is obtained; the vertically arranged MEMS microphones 1 and 4 respectively receive the phases of the acoustic vortex waves after being disturbed by the user's gesture. , Vertical phase difference for and The difference is as follows. The distance between MEMS microphone 1 and MEMS microphone 4 is... This yields the vertical component of the phase gradient vector. Therefore, the corresponding phase gradient vector is obtained.

[0057] This embodiment yields the corresponding phase gradient vector. This phase gradient vector can be used to subsequently identify the gesture category of the user's gesture.

[0058] In some embodiments, step S202, identifying the gesture category of the user's gesture based on the phase gradient vector, includes the following steps:

[0059] Determine preset phase gradient features that match the horizontal and / or vertical components of the phase gradient vector; these preset phase gradient features are associated with different user gestures.

[0060] The gesture category of the user's gesture is determined based on a preset phase gradient feature that matches the horizontal and / or vertical components.

[0061] Specifically, when the horizontal component of the phase gradient vector is greater than a preset threshold for a preset time, the user's gesture is classified as a right swipe. When the horizontal component of the phase gradient vector is less than the negative of the preset threshold for a preset time, the user's gesture is classified as a left swipe. When the sum of the squares of the horizontal and vertical components of the phase gradient vector is close to a preset constant value for a preset time, the user's gesture is classified as a circle. When the phase gradient vector increases linearly with time for a preset time, the user's gesture is classified as a spiral. When the vertical component of the phase gradient vector is greater than a preset threshold for a preset time, the user's gesture is classified as an upward swipe. When the vertical component of the phase gradient vector is less than the negative of the preset threshold for a preset time, the user's gesture is classified as a downward swipe.

[0062] For example, when the horizontal component of the phase gradient vector is greater than a preset threshold of 10 radians per meter for a preset time, the user's gesture is classified as a right swipe. When the horizontal component of the phase gradient vector is less than the negative of the preset threshold of 10 radians per meter for a preset time, the user's gesture is classified as a left swipe. When the sum of the square of the horizontal component and the square of the vertical component of the phase gradient vector is close to a preset constant value of 0 for a preset time, the user's gesture is classified as a circle. When the phase gradient vector increases linearly with time for a preset time, the user's gesture is classified as a spiral. When the vertical component of the phase gradient vector is greater than the preset threshold of 10 radians per meter for a preset time, the user's gesture is classified as an upward swipe. When the vertical component of the phase gradient vector is less than the negative of the preset threshold of 10 radians per meter for a preset time, the user's gesture is classified as a downward swipe. For example, the user's gesture action is: with... The user waves their hand horizontally to the right at a speed of [speed per second]. The distance between the horizontally arranged MEMS microphones 1 and 2 is 0.02 meters. The wavelength of the acoustic vortex wave is 0.0085 meters. The horizontally arranged MEMS microphones 1 and 2 respectively receive the acoustic vortex wave after being disturbed by the user's gesture, and obtain the phase [phase value]. 1.2 radians The value is 1.8 radians. This gives the horizontal phase difference. The value is 0.6 radians, resulting in a horizontal component of the phase gradient vector of 30 radians per meter. Since the horizontal component of this phase gradient vector is greater than the preset threshold of 10 radians per meter, the user's gesture is identified as a right swipe.

[0063] This embodiment can accurately identify the gesture category of a user's gesture.

[0064] In some of these embodiments, Figure 3 This is a flowchart of the control method for the intelligent range hood in this embodiment, as shown below. Figure 3 As shown, the control method for the above-mentioned intelligent range hood may further include the following steps:

[0065] Step S301: Determine the modal diffusion of the acoustic vortex wave based on the phase gradient vector.

[0066] Specifically, the modal diffusion of the acoustic vortex wave Represented as:

[0067] ;

[0068] in, represents the phase gradient vector; C represents the closed path of acoustic vortex wave propagation, which can be obtained through sound field reconstruction algorithms.

[0069] Step S302: Determine the corresponding oil fume concentration based on the modal diffusion of the acoustic vortex wave and the preset calibration coefficient.

[0070] Specifically, the concentration of the oil fume Represented as:

[0071] ;

[0072] in, The modal diffusion of the acoustic vortex wave is represented by k, which is the calibration coefficient.

[0073] Step S303: Adjust the airflow level of the range hood according to the concentration of cooking fumes.

[0074] Specifically, based on the oil fume concentration and the preset oil fume threshold, the air volume level of the range hood can be controlled, or the current cooking mode can be determined based on the oil fume concentration, and then the matching air volume level can be controlled according to the current cooking mode. Here, no specific limitation is made on the air volume level control method based on oil fume concentration.

[0075] This embodiment allows for accurate determination of oil fume concentration, and the control of the range hood's airflow level based on the oil fume concentration.

[0076] In some embodiments, the modal diffusion of the acoustic vortex wave is determined based on the phase gradient vector, including the following steps:

[0077] Based on the closed propagation path of acoustic vortex waves, the modal diffusion of acoustic vortex waves is obtained by integrating the phase gradient vector.

[0078] Specifically, based on the closed propagation path of the acoustic vortex wave, the modal diffusion of the acoustic vortex wave is obtained by integrating the phase gradient vector. Represented as:

[0079] ;

[0080] in, represents the phase gradient vector; C represents the closed path of acoustic vortex wave propagation, which can be obtained through sound field reconstruction algorithms.

[0081] This embodiment yields the modal diffusion of an acoustic vortex wave. This modal diffusion can be used to subsequently determine the concentration of cooking fumes.

[0082] In some embodiments, controlling the airflow level of the range hood based on the concentration of cooking fumes includes the following steps:

[0083] The fan speed of the range hood is controlled according to the concentration of cooking fumes and the preset fume threshold.

[0084] Specifically, the oil fume concentration is compared with a preset oil fume threshold, and the airflow level of the range hood is adaptively controlled based on the comparison result. If the real-time detected oil fume concentration is greater than the preset oil fume threshold, the airflow level is increased; if the real-time detected oil fume concentration is less than or equal to the preset oil fume threshold, the current airflow level is maintained.

[0085] For example, the fume threshold can be 100 milligrams per cubic meter. When the fume concentration is less than or equal to 100 milligrams per cubic meter, the airflow level remains unchanged; when the fume concentration is greater than 100 milligrams per cubic meter, the airflow level is increased by two levels.

[0086] This embodiment allows for precise control of the range hood's airflow level based on the concentration of cooking fumes, thus enabling accurate matching to different cooking scenarios.

[0087] This embodiment also provides an intelligent range hood, which includes an acoustic transceiver and a controller; the acoustic transceiver is used to emit acoustic vortex waves and receive acoustic vortex waves after being disturbed by the user's gesture; the controller is used to perform the steps in any of the above method embodiments.

[0088] Specifically, the acoustic transceiver can be an ultrasonic phased array, comprising at least four piezoelectric ceramic plates and at least four MEMS microphones. The piezoelectric ceramic plates are used to generate acoustic vortex waves carrying orbital angular momentum. The orbital angular momentum carried by the acoustic vortex wave is a topological property of the sound wave, manifested as a helical structure on the wavefront. This rotational property is characterized by the topological charge m, which describes the number of twists of the wavefront in the propagation direction. The larger the absolute value of m, the denser the helical twist; the sign represents the direction of rotation. For example: when m is 0, the sound wave is a conventional plane wave with no rotation; when m is 1, the sound wave is clockwise helical; when m is -1, the sound wave is counterclockwise helical; when m is 2, the sound wave is a more compact clockwise helical; when m is -2, the sound wave is a more compact counterclockwise helical. When a hand enters the acoustic vortex field, it disturbs the phase distribution of the helical wavefront. For example, in a static state (no hand movement), the spiral phase is stable, meaning the phase increases linearly with the angle. However, when there is hand movement, the hand obstructs the flow, causing local changes in sound velocity and distorting the spiral shape, resulting in phase distortion. Therefore, this distortion pattern corresponds one-to-one with hand gesture trajectories. This is the acoustic vortex wave. Represented as:

[0089] ;

[0090] in, Let k represent the initial amplitude, k represent the wave number, and r represent the propagation distance. This indicates the azimuth angle. The direction of the acoustic vortex wave can be controlled by adjusting the vibration delay time of the piezoelectric ceramic sheet. This delay time... Represented as:

[0091] ;

[0092] Where f represents the ultrasonic frequency. The angle of the nth piezoelectric ceramic sheet in the ring array is denoted by , and m represents the topological charge. MEMS microphones are used to receive acoustic vortex waves perturbed by user gestures; at least two horizontally arranged MEMS microphones and at least two vertically arranged MEMS microphones are used. The perturbed acoustic vortex waves... Represented as:

[0093] ;

[0094] in, Let k represent the initial amplitude, r represent the wave number, and m represent the propagation distance. Indicates azimuth. This is a phase perturbation. The specific expression is as follows:

[0095] ;

[0096] Where k represents the wave number, v represents the hand movement speed, and t represents time. This indicates the angle between the hand and the beam. The controller is used to execute any of the control methods described above for the intelligent range hood. For example: The horizontally arranged MEMS microphones 1 and 2 respectively receive the phases of the acoustic vortex waves after the user's hand gesture disturbance. , Horizontal phase difference for and The difference is... The distance between MEMS microphone 1 and MEMS microphone 2 is... Thus, the horizontal component of the phase gradient vector is obtained; the vertically arranged MEMS microphones 1 and 4 respectively receive the phases of the acoustic vortex waves after being disturbed by the user's gesture. , Vertical phase difference for and The difference is as follows. The distance between MEMS microphone 1 and MEMS microphone 4 is... This yields the vertical component of the phase gradient vector. Therefore, the phase gradient vector... Represented as:

[0097] ;

[0098] Based on the phase gradient vector, the user's gesture category can be identified. For example: when the horizontal component of the phase gradient vector is greater than a preset threshold of 10 radians per meter for a preset time, the user's gesture category is identified as a right swipe. When the horizontal component of the phase gradient vector is less than the negative of the preset threshold of 10 radians per meter for a preset time, the user's gesture category is identified as a left swipe. When the sum of the squares of the horizontal and vertical components of the phase gradient vector is close to a preset constant value of 0 for a preset time, the user's gesture category is identified as a circle. When the phase gradient vector increases linearly with time for a preset time, the user's gesture category is identified as a spiral. When the vertical component of the phase gradient vector is greater than the preset threshold of 10 radians per meter for a preset time, the user's gesture category is identified as an upward swipe. When the vertical component of the phase gradient vector is less than the negative of the preset threshold of 10 radians per meter for a preset time, the user's gesture category is identified as a downward swipe.

[0099] In some of these embodiments, Figure 4 This is a schematic diagram of the acoustic transceiver device of the intelligent range hood in this embodiment, as shown below. Figure 4 As shown, the acoustic transceiver includes an outer acoustic emitting area 40 and an inner acoustic receiving area 50; the inner acoustic receiving area 50 includes at least two horizontally arranged receiving array elements 501 and / or two vertically arranged receiving array elements 501; the outer acoustic emitting area 40 is used to emit acoustic vortex waves; the inner acoustic receiving area 50 is used to receive acoustic vortex waves after being disturbed by the user's gesture.

[0100] Specifically, the acoustic transceiver device of the intelligent range hood includes an outer acoustic emitting area 40 and an inner acoustic receiving area 50. The inner acoustic receiving area 50 includes at least two horizontally arranged receiving array elements 501 and / or two vertically arranged receiving array elements 501. Each receiving array element 501 can be a MEMS microphone. The inner acoustic receiving area 50 is used to receive acoustic vortex waves disturbed by user gestures. The outer acoustic emitting area 40 includes at least four evenly distributed emitting array elements 401. Each emitting array element 401 can be a piezoelectric ceramic sheet. The outer acoustic emitting area 40 is used to emit acoustic vortex waves.

[0101] It should be noted that the above modules can be functional modules or program modules, and can be implemented through software or hardware. For modules implemented through hardware, the above modules can reside in the same processor; or the above modules can be located in different processors in any combination.

[0102] This embodiment also provides a computer device, including a memory and a processor, wherein the memory stores a computer program and the processor is configured to run the computer program to perform the steps in any of the above method embodiments.

[0103] Optionally, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor and the input / output device is connected to the processor.

[0104] It should be noted that the specific examples in this embodiment can refer to the examples described in the above embodiments and optional implementations, and will not be repeated in this embodiment.

[0105] Furthermore, in conjunction with the control method for the intelligent range hood provided in the above embodiments, this embodiment can also provide a storage medium for implementation. This storage medium stores a computer program; when executed by a processor, the computer program implements any of the control methods for the intelligent range hood in the above embodiments.

[0106] It should be understood that the specific embodiments described herein are merely illustrative of the application and not intended to limit it. All other embodiments derived by those skilled in the art based on the embodiments provided in this application without inventive effort are within the scope of protection of this application.

[0107] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[0108] Obviously, the accompanying drawings are merely some examples or embodiments of this application. Those skilled in the art can apply this application to other similar situations based on these drawings without any creative effort. Furthermore, it is understood that although the work done in this development process may be complex and lengthy, for those skilled in the art, certain design, manufacturing, or production modifications made based on the technical content disclosed in this application are merely conventional technical means and should not be considered as insufficient disclosure of this application.

[0109] The term "embodiment" in this application refers to a specific feature, structure, or characteristic described in connection with an embodiment that may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily imply the same embodiment, nor does it imply that it is mutually exclusive with or independent of other embodiments. It will be clearly or implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0110] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of patent protection. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the appended claims.

Claims

1. A control method for an intelligent range hood, characterized in that, The intelligent range hood includes a sound wave transceiver; The acoustic transceiver is used to transmit acoustic vortex waves and receive the acoustic vortex waves after being disturbed by a user's gesture; the method includes: The received acoustic vortex wave, after being disturbed by the user's gesture, is subjected to phase gradient analysis to obtain the corresponding phase gradient vector. Based on the phase gradient vector, the gesture category of the user's gesture is identified; Based on the gesture category, the smart range hood is controlled to perform the corresponding target operation.

2. The control method for the intelligent range hood according to claim 1, characterized in that, The acoustic transceiver includes at least two horizontally arranged receiving array elements and / or two vertically arranged receiving array elements. The step of performing phase gradient analysis on the received acoustic vortex wave after user gesture perturbation to obtain the corresponding phase gradient vector includes: The horizontal phase difference is determined based on the acoustic vortex waves received by the two horizontally arranged receiving array elements. Based on the horizontal phase difference and the distance between the two horizontally arranged receiving array elements, the horizontal phase gradient vector is determined as the horizontal component of the phase gradient vector; and / or, The vertical phase difference is determined based on the acoustic vortex waves received by the two vertically arranged receiving array elements. Based on the vertical phase difference and the distance between the two vertically arranged receiving array elements, the vertical component of the phase gradient vector is obtained.

3. The control method for the intelligent range hood according to claim 2, characterized in that, The step of identifying the gesture category of the user's gesture based on the phase gradient vector includes: Determine a preset phase gradient feature that matches the horizontal and / or vertical components of the phase gradient vector; the preset phase gradient feature is associated with different user gestures; The gesture category of the user gesture is determined based on the preset phase gradient features that match the horizontal and / or vertical components.

4. The control method for the intelligent range hood according to claim 1, characterized in that, The method further includes: Based on the phase gradient vector, the modal diffusion of the acoustic vortex wave is determined; The corresponding oil fume concentration is determined based on the modal diffusion of the acoustic vortex wave and the preset calibration coefficient; The airflow level of the range hood is controlled according to the concentration of cooking fumes.

5. The control method for the intelligent range hood according to claim 4, characterized in that, Determining the modal diffusion of the acoustic vortex wave based on the phase gradient vector includes: Based on the closed propagation path of the acoustic vortex wave, the phase gradient vector is integrated to obtain the modal diffusion of the acoustic vortex wave.

6. The control method for the intelligent range hood according to claim 4, characterized in that, The step of controlling the airflow level of the range hood according to the oil fume concentration includes: The airflow level of the range hood is controlled according to the oil fume concentration and the preset oil fume threshold.

7. A smart range hood, characterized in that, The intelligent range hood includes a sound wave transceiver and a controller; The acoustic transceiver is used to transmit acoustic vortex waves and receive the acoustic vortex waves after being disturbed by the user's gestures. The controller is used to execute the control method of the intelligent range hood according to any one of claims 1 to 6.

8. The intelligent range hood according to claim 7, characterized in that, The acoustic transceiver includes an outer acoustic emission area and an inner acoustic receiving area; the inner acoustic receiving area includes at least two horizontally arranged receiving array elements and / or two vertically arranged receiving array elements. The peripheral acoustic emission zone is used to emit the acoustic vortex wave; The inner acoustic receiving area is used to receive the acoustic vortex wave after being disturbed by the user's gesture.

9. A computer device, comprising a memory and a processor, characterized in that, The memory stores a computer program, and the processor is configured to run the computer program to perform the steps of the control method for the intelligent range hood according to any one of claims 1 to 6.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the control method for the intelligent range hood according to any one of claims 1 to 6.

Images