Whole-house directional audio injection system and control method thereof

Abstract

The embodiment of the invention discloses a whole-house directional audio injection system and a control method thereof. The whole-house directional audio injection system comprises a controller, an audio injection module and a driving mechanism, wherein the controller is electrically connected with the audio injection module and the driving mechanism, the driving mechanism is used for being installed on a wall surface, and the audio injection module is installed on the driving mechanism; the controller is used for controlling the driving mechanism to adjust the position and / or orientation of the audio injection module; and the controller is also used for controlling the audio injection module to play the ultrasonic signals with at least two preset frequencies so as to form a first audio injection signal in the preset area at the current position and orientation of the audio injection module. According to the embodiment of the invention, the acoustic directional propagation technology is adopted, the directional playing of the audio injection sound is realized for the cook, the attention of the user can be effectively distracted, and the negative effect of the noise of kitchen appliances such as a range hood on the emotion of the user is improved, so that the noise experience of the cook in the cooking process is improved.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliance technology, and in particular to a whole-house directional audio injection system and its control method. Background Technology

[0002] In the kitchen, the cooking process using kitchen appliances generates a lot of noise, such as range hoods, steam ovens, and air fryers, making the cooking experience very poor.

[0003] Noise reduction technology in the kitchen appliance field initially focused on passive noise reduction, using sound-absorbing materials to decrease passive noise. However, it has gradually shifted towards improving sound quality through sound technology. Currently, mainstream active sound control technologies include active noise cancellation and audio injection, which achieve noise reduction or audio injection effects by playing audio. However, existing audio playback methods are relatively fixed, resulting in excessive noise throughout the kitchen during cooking, failing to provide users with a more accurate active sound control experience. Summary of the Invention

[0004] This invention provides a whole-house directional audio injection system and its control method, which uses acoustic directional propagation technology to directionally play audio injection sound to the cook, thereby improving the cook's noise experience during the cooking process.

[0005] In a first aspect, embodiments of the present invention provide a whole-house directional audio injection system, including a controller, an audio injection module, and a drive mechanism;

[0006] The controller is electrically connected to the audio injection module and the drive mechanism respectively. The drive mechanism is used to be mounted on the wall, and the audio injection module is mounted on the drive mechanism.

[0007] The controller is used to control the drive mechanism to adjust the position and / or orientation of the audio injection module;

[0008] The controller is also used to control the audio injection module to play at least two preset frequency ultrasonic signals to form a first audio injection signal in a predetermined area under the current position and orientation of the audio injection module. The first audio injection signal is the difference frequency signal of at least two preset frequency ultrasonic signals, and the frequency of the difference frequency signal is within the audible frequency range.

[0009] Optionally, the audio injection module includes at least two ultrasonic transducers, and the controller is electrically connected to at least two ultrasonic transducers respectively;

[0010] The controller is used to send the corresponding ultrasonic frequency band electrical signal to each ultrasonic transducer respectively.

[0011] At least two ultrasonic transducers are used to convert the received ultrasonic frequency band electrical signals into ultrasonic signals of corresponding preset frequencies and output them in a preset direction, so that ultrasonic signals of at least two preset frequencies form a difference frequency signal in a predetermined area.

[0012] Optionally, the controller is also used to control the audio injection module to play a second audio injection signal, the frequency of which is within the audible frequency range.

[0013] Optionally, the audio injection module also includes at least one speaker, and the controller is electrically connected to at least one speaker;

[0014] The controller is used to send electrical signals for the corresponding audible frequency band to each speaker.

[0015] At least one loudspeaker is used to convert the received audible frequency band electrical signal into a second audio injection signal output.

[0016] Optionally, the drive mechanism includes a slide rail, a slide plate, and at least two telescopic rods;

[0017] The slide rail is used for wall mounting, the slide plate is slidably connected to the slide rail, and different positions of the audio injection module are fixed to the slide plate by at least two telescopic rods;

[0018] The skateboard is configured to move on the slide rail to a preset position under the control of the controller, and the telescopic rod is configured to extend and retract to a preset length under the control of the controller.

[0019] Optionally, it also includes an infrared detection module, which is electrically connected to the controller;

[0020] The infrared detection module is used to send infrared detection light to the detection area and receive the infrared reflected light returned by the detection area;

[0021] The controller is used to determine the user's location in the detection area based on infrared reflected light.

[0022] Optionally, it also includes a cloud platform, with the controller communicating with the cloud platform; the controller is used to obtain the usage status of the home appliances that communicate with the cloud platform.

[0023] Secondly, embodiments of the present invention also provide a control method for a whole-house directional audio injection system, applied to a whole-house directional audio injection system as described in any embodiment of the present invention. The control method includes:

[0024] Determine whether audio injection mode is enabled;

[0025] Upon receiving an audio injection mode enable command, determine whether to enable the exclusive audio injection mode.

[0026] When a command to enable the exclusive audio injection mode is received, the control drive mechanism adjusts the position and / or orientation of the audio injection module, and controls the audio injection module to play at least two preset frequency ultrasonic signals to form a first audio injection signal in a predetermined area under the current position and orientation of the audio injection module; wherein, the first audio injection signal is the difference frequency signal of at least two preset frequency ultrasonic signals, and the frequency of the difference frequency signal is within the audible sound frequency range.

[0027] Optionally, after determining whether the audio injection mode is enabled, upon receiving an instruction to enable the audio injection exclusive mode, the driver mechanism is controlled to adjust the position and / or orientation of the audio injection module, and the audio injection module is controlled to play at least two preset frequency ultrasonic signals. Before forming the first audio injection signal within a preset area under the current position and orientation of the audio injection module, the method further includes:

[0028] Upon receiving an instruction to enable the audio injection mode, the audio injection module is controlled to play a second audio injection signal; wherein, the frequency of the second audio injection signal is within the audible frequency range.

[0029] Optionally, the whole-house directional audio injection system also includes an infrared detection module, which is electrically connected to the controller;

[0030] Upon receiving a command to enable the dedicated audio injection mode, the control drive mechanism adjusts the position and / or orientation of the audio injection module, including:

[0031] Upon receiving the command to enable the audio injection exclusive mode, the infrared detection module is controlled in real time to send infrared detection light to the detection area and receive the infrared reflected light returned by the detection area.

[0032] The location of the user in the detection area is determined in real time based on the infrared reflected light.

[0033] The control drive mechanism adjusts the position and / or orientation of the audio injection module in real time so that the audio injection module is aligned with the user's location.

[0034] Optionally, the whole-house directional audio injection system also includes a cloud platform, with the controller communicating with the cloud platform;

[0035] Upon receiving a command to activate the exclusive audio injection mode, the control drive mechanism adjusts the position and / or orientation of the audio injection module, and controls the audio injection module to play at least two preset frequency ultrasonic signals to form a first audio injection signal within a predetermined area under the current position and orientation of the audio injection module, including:

[0036] Upon receiving the command to enable the audio injection exclusive mode, obtain the usage status of the home appliances communicating with the cloud platform;

[0037] The control drive mechanism adjusts the position and / or orientation of the audio injection module, and controls the audio injection module to play at least two preset ultrasonic signals of preset frequencies corresponding to the usage status of the household appliance, so as to form a first audio injection signal in a predetermined area under the current position and orientation of the audio injection module.

[0038] The technical solution provided by this invention involves setting up a controller, an audio injection module, and a drive mechanism in a whole-house directional audio injection system. The controller is electrically connected to both the audio injection module and the drive mechanism. The drive mechanism is mounted on a wall, and the audio injection module is mounted on the drive mechanism. The controller controls the drive mechanism to adjust the position and / or orientation of the audio injection module. The controller also controls the audio injection module to play at least two preset frequency ultrasonic signals to form a first audio injection signal within a predetermined area at the current position and orientation of the audio injection module. Employing acoustic directional propagation technology, the system achieves directional playback of audio injection sound for the cook, effectively diverting the user's attention and mitigating the negative impact of kitchen appliance noise (such as range hoods) on the user's mood, thereby improving the cook's noise experience during cooking. Attached Figure Description

[0039] Figure 1 This is a partial structural schematic diagram of a whole-house directional audio injection system provided in an embodiment of the present invention;

[0040] Figure 2 This is a schematic diagram illustrating the acoustic directional propagation principle of the audio injection module provided in this embodiment of the invention;

[0041] Figure 3 yes Figure 1 A partial structural diagram of the whole-house directional audio injection system shown from another perspective;

[0042] Figure 4 yes Figure 3 Enlarged view of the area within the circle shown;

[0043] Figure 5 This is a flowchart of a whole-house directional audio injection system control method provided in an embodiment of the present invention;

[0044] Figure 6 This is a flowchart of another whole-house directional audio injection system control method provided in an embodiment of the present invention;

[0045] Figure 7 This is a flowchart of another whole-house directional audio injection system control method provided by an embodiment of the present invention;

[0046] Figure 8 This is a control logic diagram of a whole-house directional audio injection system provided in an embodiment of the present invention;

[0047] In the diagram: 10-Audio injection module, 11-Ultrasonic transducer; 20-Drive mechanism, 21-Slide rail, 22-Slide plate, 23-Telescopic rod; 30-Smoke machine. Detailed Implementation

[0048] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0049] The terminology used in the embodiments of this invention is for the purpose of describing specific embodiments only and is not intended to limit the invention. It should be noted that directional terms such as "upper," "lower," "left," and "right" described in the embodiments of this invention are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this invention. Furthermore, in the context, it should be understood that when referring to an element being formed "on" or "below" another element, it can be formed not only directly on or below the other element, but also indirectly on or below it through intermediate elements. The terms "first," "second," etc., are used for descriptive purposes only and do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0050] The term "comprising" and its variations as used in this invention are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment".

[0051] It should be noted that the concepts of "first" and "second" mentioned in this invention are only used to distinguish the corresponding contents and are not used to limit the order or interdependence.

[0052] It should be noted that the terms "a" and "a plurality of" used in this invention are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0053] Figure 1 This is a partial structural schematic diagram of a whole-house directional audio injection system provided in an embodiment of the present invention, for reference. Figure 1 The whole-house directional audio injection system includes a controller (not shown in the figure), an audio injection module 10, and a drive mechanism 20. The controller is electrically connected to the audio injection module 10 and the drive mechanism 20 respectively. The drive mechanism 20 is used to be installed on the wall, and the audio injection module 10 is installed on the drive mechanism 20.

[0054] The controller is used to control the drive mechanism 20 to adjust the position and / or orientation of the audio injection module 10; the controller is also used to control the audio injection module 10 to play at least two preset frequency ultrasonic signals to form a first audio injection signal in a predetermined area under the current position and orientation of the audio injection module 10. The first audio injection signal is the difference frequency signal of at least two preset frequency ultrasonic signals, and the frequency of the difference frequency signal is within the audible sound frequency range.

[0055] First, the whole-house directional audio injection system in this embodiment of the invention is used to be installed in the kitchen space to provide active audio injection into the kitchen space, thereby improving the user's cooking experience. For example... Figure 1 For example, it can be set above the range hood 30.

[0056] The audio injection module 10 is an audio output module that actively plays music, birdsong, running water sounds, etc., into the kitchen space to achieve audio injection. Audio injection can divert the user's attention and mitigate the negative emotional impact of noise from kitchen appliances such as range hoods. The controller is responsible for regulating the audio injection module 10 by providing corresponding electrical signals. The audio injection module 10 is responsible for converting the received electrical signals into corresponding sound wave signals for playback. In this embodiment, the audio injection module 10 can emit at least two preset frequency sound wave signals in the form of ultrasound, based on the electrical signals provided by the controller. These two preset frequency sound wave signals will generate a non-linear interaction in space, producing a difference frequency signal within the audible frequency range, which is heard by a user at a directional location, forming the first audio injection signal.

[0057] Specifically, Figure 2 This is a schematic diagram illustrating the acoustic directional propagation principle of the audio injection module provided in this embodiment of the invention. See below for reference. Figure 2 The acoustic directional propagation principle of the audio injection module 10 in this embodiment of the invention is explained as follows: The audio injection module 10 includes an ultrasonic transducer 11, which serves as an energy conversion device and transmits signals. Specifically, the controller sends two electrical signals to the audio injection module 10, and the ultrasonic transducer 11 is responsible for converting these two electrical signals into two types of ultrasonic signals. The two electrical signals sent by the controller are intended to generate ultrasonic signals of two frequencies, hence they can be referred to as ultrasonic frequency band electrical signals, such as… Figure 2As shown, the electrical signals of the two ultrasonic frequency bands can be represented by f1 and f2, respectively. Simultaneously, the ultrasonic transducer 11 converts these two ultrasonic frequency band electrical signals (f1 and f2) to output two ultrasonic signals with different preset frequencies, also represented by f1 and f2. When these two ultrasonic signals propagate and diffuse in a medium such as air, a nonlinear interaction occurs. In a nonlinear medium, wave propagation is distorted due to the nonlinearity of cutoff physical properties such as elasticity and density, resulting in harmonics and combined frequency components. When two waves of different frequencies propagate simultaneously in a medium, due to the nonlinear interaction, [the following occurs]. Figure 2 The combined and difference frequency phenomena shown refer to the generation of a combined frequency signal (f1+f2) and a difference frequency signal (f1-f2) in addition to the ultrasonic signals with frequencies f1 and f2. The difference frequency signal exhibits a more concentrated sound beam and clear directionality, thus enabling directional propagation to a predetermined area.

[0058] It should be noted that the two ultrasonic frequency signals sent by the controller are not fixed-frequency signals; they merely indicate that the two ultrasonic frequency signals are different. Different frequency ultrasonic signals can be played through the ultrasonic transducer 11. In practical applications, the frequencies of these two ultrasonic signals will change over time. Since the two ultrasonic signals form a difference frequency signal within a predetermined area, by appropriately modulating the output electrical signal, the controller can not only ensure that the frequency of the difference frequency signal falls within the audible frequency range (i.e., audible to the human ear), but also create a difference frequency signal with the same time-varying frequency by forming two ultrasonic signals whose frequencies change over time. This allows for the creation of specific audio injection sounds such as music, birdsong, and flowing water, forming the first audio injection signal.

[0059] Furthermore, it can be understood that during the process of the audio injection module 10 playing ultrasonic signals to achieve directional propagation to a predetermined area, the predetermined area is related to the orientation of the ultrasonic signals played by the audio injection module 10. When the orientation of the audio injection module 10 is fixed, the predetermined area of ​​directional propagation is also fixed. However, considering that the user's position is not fixed during cooking in the kitchen space, in this embodiment of the invention, the controller is also responsible for controlling the drive mechanism 20 to adjust the position or orientation of the audio injection module 10, thereby adjusting the position of the predetermined area of ​​directional playback so that it can be aimed at the user and accurately provide audio injection to the user.

[0060] In the above embodiments, a controller, an audio injection module, and a drive mechanism are set in the whole-house directional audio injection system. The controller is electrically connected to both the audio injection module and the drive mechanism. The drive mechanism is mounted on the wall, and the audio injection module is mounted on the drive mechanism. The controller is used to control the drive mechanism to adjust the position and / or orientation of the audio injection module. The controller is also used to control the audio injection module to play at least two preset frequency ultrasonic signals to form a first audio injection signal within a predetermined area under the current position and orientation of the audio injection module. By using acoustic directional propagation technology, directional audio injection sound is played for the cook, which can effectively divert the user's attention, reduce the negative impact of kitchen appliance noise such as range hoods on the user's mood, and thus improve the noise experience of the cook during the cooking process.

[0061] In an optional embodiment, the audio injection module 10 may include at least two ultrasonic transducers 11, and the controller is electrically connected to at least two ultrasonic transducers 11 respectively; the controller is used to send corresponding ultrasonic frequency band electrical signals to each ultrasonic transducer 11 respectively; the at least two ultrasonic transducers 11 are used to convert the corresponding received ultrasonic frequency band electrical signals into ultrasonic signals of corresponding preset frequencies and output them in a preset direction, so that at least two preset frequency ultrasonic signals form a difference frequency signal in a predetermined area.

[0062] In this embodiment, at least two ultrasonic transducers 11 are provided, meaning that each ultrasonic transducer can be individually controlled by the controller. Specifically, the controller sends a modulated ultrasonic frequency signal to each ultrasonic transducer 11, and each transducer 11 is only responsible for converting the received ultrasonic frequency signal into an ultrasonic signal of a corresponding preset frequency. It should be noted that the formation of a difference frequency signal in the predetermined area depends not only on the frequency of the ultrasonic signal modulated by the controller but also on the direction in which the ultrasonic transducer 11 emits the ultrasonic waves. That is, the installation orientation of the ultrasonic waves needs to be set simultaneously so that each ultrasonic transducer 11 outputs an ultrasonic signal in a preset direction, generating a nonlinear interaction in space and forming a difference frequency signal in the predetermined area.

[0063] In an optional embodiment, the controller can also be used to control the audio injection module 10 to play a second audio injection signal, the frequency of which is within the audible frequency range.

[0064] This embodiment refers to the fact that the audio injection module 10 can also directly output a sound signal with a frequency that conforms to the audible frequency range based on the electrical signal provided by the controller. That is, the audio injection module 10 directly plays the second audio injection signal. It can be understood that the difference between the second audio injection signal and the first audio injection signal here is only in the different formation methods. They can be the same audio injection sounds such as music, birdsong, and flowing water.

[0065] Therefore, the audio injection module 10 can be further configured to include at least one speaker, and the controller is electrically connected to at least one speaker; the controller is used to send corresponding audible frequency band electrical signals to each speaker respectively; at least one speaker is used to convert the corresponding received audible frequency band electrical signals into second audio injection signals for output.

[0066] The speaker here is also an energy conversion device, serving as a signal transmitter. However, unlike the ultrasonic transducer 11, it is responsible for transmitting audible sound wave signals. That is, it is responsible for converting the audible sound frequency band electrical signal provided by the controller into a second audio injection signal for playback. The audio injection module 10 here is responsible for playing sound wave signals throughout the entire kitchen space. It does not require directionality, so it is only necessary to ensure that the sound wave signal can propagate or cover the entire kitchen space. Therefore, the number of speakers installed here is not limited.

[0067] Figure 3 yes Figure 1 The diagram shows a partial structural representation of the whole-house directional audio injection system from another perspective. Figure 4 yes Figure 3 The enlarged view of the area within the circle shown is for reference. Figure 1 , Figure 3 and Figure 4 In this embodiment of the invention, optionally, the drive mechanism 20 may include a slide rail 21, a slide plate 22, and at least two telescopic rods 23; the slide rail 21 is used to be installed on the wall, the slide plate 22 is slidably connected to the slide rail 21, and different positions of the audio injection module 10 are respectively fixed on the slide plate 22 by at least two telescopic rods 23; the slide plate 22 is configured to move to a preset position on the slide rail 21 under the control of the controller, and the telescopic rods 23 are configured to extend and retract to form a preset length under the control of the controller.

[0068] Among them, the skateboard 22, controlled by the controller, can move to any position on the slide rail 21, and at the same time, as Figure 4 For example, the two telescopic rods 23, controlled by a controller, can be adjusted to any length within a fixed range. Thus, the audio injection module 10 can be positioned on the slide rail 21 via the controller and drive mechanism 20, simultaneously achieving different left and right orientations. The movement of the slide plate 22 and the extension / retraction of the telescopic rods 23 can be implemented using corresponding drive motors; this embodiment of the invention does not impose limitations. It is understood that the number and placement of the telescopic rods 23 shown in the figure are only one implementation of the invention. To allow adjustment of the pitch and yaw angles of the audio injection module 10, three or more telescopic rods 23 can be provided, and their connection positions to the audio injection module 10 can be selected according to actual needs; no further restrictions are imposed here.

[0069] In another embodiment of the present invention, an infrared detection module may also be provided in the whole-house directional audio injection system. The infrared detection module is electrically connected to the controller. The infrared detection module is used to send infrared detection light to the detection area and receive infrared reflected light returned by the detection area. The controller is used to determine the location of the user in the detection area based on the infrared reflected light.

[0070] The infrared detection module, serving as the positioning and sensing unit (i.e., photoelectric detection component), specifically includes an infrared transmitter and a receiver. The transmitter projects modulated infrared light (e.g., pulse-coded signal) of a specific wavelength (e.g., 940nm invisible light) into the detection area. The receiver captures the reflected light signal through a photoelectric sensor and converts it into an electrical signal via photoelectric conversion, which is then transmitted to the controller. The controller incorporates positioning algorithms based on infrared reflected light, such as time-difference ranging (TDR) and multi-sensor triangulation. Taking TRD as an example, by calculating the time difference between infrared light emission and reception, and combining this with the speed of light, the straight-line distance between the user and the module can be calculated. Simultaneously, by scanning and emitting infrared light in three-dimensional space, the transmitter can construct the user's body contour, thus determining the user's specific location in three-dimensional space.

[0071] In another embodiment of the present invention, a cloud platform may be set in the whole-house directional audio injection system, and the controller is connected to the cloud platform for communication; the controller is used to obtain the usage status of home appliances that communicate with the cloud platform.

[0072] The cloud platform refers to a cloud server used for home connectivity. This cloud server can communicate with various home appliances and the whole-house directional audio injection system via the internet. Through home connectivity, the whole-house directional audio injection system can obtain information about the home appliances used in the user's home, such as which appliances are currently operating. This allows the system to determine the number and types of kitchen appliances generating noise in the kitchen space, facilitating adaptive and proactive audio injection for users to address the mixed noise generated by these appliances in real time. For example, based on the obtained appliance signals, it can be determined whether a single kitchen appliance is operating in the kitchen space. Compared to the mixed noise generated by multiple operating kitchen appliances, the type, frequency, and band of noise generated by a single operating kitchen appliance may differ. Therefore, during audio injection, corresponding preset frequencies and bands of audio can be used to effectively divert the user's attention in noise environments generated by a single or multiple kitchen appliances, reducing the user's perception of noise.

[0073] In view of the above-mentioned whole-house directional audio injection system, this embodiment of the invention also provides a whole-house directional audio injection system control method. Figure 5 This is a flowchart of a whole-house directional audio injection system control method provided in an embodiment of the present invention, referred to as [reference]. Figure 1and Figure 5 First, as described in the above embodiment, the audio injection system has an audio injection module 10 and a driver module. The control method of this system can be specifically executed by a controller, and specifically, the control method includes:

[0074] S110. Determine whether audio injection mode is enabled.

[0075] Among them, the audio injection mode refers to the process where kitchen appliances such as range hoods generate noise during operation, while simultaneously performing an audio injection action, actively playing audio such as music, birdsong, and running water sounds, creating an audio injection scenario for users during cooking, diverting their attention, and mitigating the negative impact of kitchen appliance noise on users' emotions.

[0076] S120. Upon receiving an audio injection mode enable command, determine whether to enable the exclusive audio injection mode.

[0077] The audio injection mode activation command refers to the user interacting with the whole-house directional audio injection system via buttons, touch, gestures, etc., sending an operation signal to the system to activate the audio injection mode. Based on this operation signal, the system can determine that the user has an audio injection need. The dedicated audio injection mode refers to the user interacting with the system via buttons, touch, gestures, etc., sending an operation signal to the system to activate the dedicated audio injection mode. Based on this operation signal, the system can determine that the user has a need for directional audio injection. Therefore, this step essentially involves confirming whether directional audio injection is required after the user's interaction with the system confirms that they have an audio injection need.

[0078] S130. Upon receiving the command to enable the audio injection exclusive mode, control the drive mechanism to adjust the position and / or orientation of the audio injection module, and control the audio injection module to play at least two preset frequency ultrasonic signals to form a first audio injection signal in a predetermined area under the current position and orientation of the audio injection module.

[0079] The first audio injection signal is a difference frequency signal of at least two preset ultrasonic signals, and the frequency of the difference frequency signal is within the audible sound frequency range.

[0080] This step refers to the process of performing directional audio injection after confirming the user's need for directional audio injection through user interaction with the system. As mentioned earlier, the system in this embodiment provides corresponding electrical signals to the audio injection module 10 through the controller, which controls the audio injection module 10 to play ultrasonic signals. Through the nonlinear effect in the medium, a first audible audio injection signal is formed in a predetermined area. The specific working principle will not be elaborated here. At the same time, the position or orientation of the audio injection module 10 is adjusted by controlling the drive mechanism 20, thereby adjusting the position of the predetermined area for directional playback so that it can be aimed at the user and accurately provide audio injection to the user.

[0081] The control method provided in this embodiment first determines whether the audio injection mode is enabled. Then, upon receiving an audio injection mode enable command, it determines whether the audio injection exclusive mode is enabled. Finally, upon receiving the audio injection exclusive mode enable command, it controls the drive mechanism to adjust the position and / or orientation of the audio injection module and controls the audio injection module to play at least two preset frequency ultrasonic signals. This forms a first audio injection signal within a predetermined area under the current position and orientation of the audio injection module. By employing acoustic directional propagation technology, the method achieves directional playback of audio injection sound for the cook, which can effectively divert the user's attention and mitigate the negative impact of kitchen appliance noise, such as range hood noise, on the user's mood, thereby improving the cook's noise experience during the cooking process.

[0082] Based on the above embodiments, after determining whether the audio injection mode is enabled in S110, and before controlling the drive mechanism to adjust the position and / or orientation of the audio injection module and controlling the audio injection module to play at least two preset frequency ultrasonic signals in S130 when receiving the audio injection exclusive mode enable command, the system control method may further include the following steps:

[0083] S121. Upon receiving an audio injection mode activation command, control the audio injection module to play a second audio injection signal; wherein the frequency of the second audio injection signal is within the audible frequency range.

[0084] This step refers to controlling the audio injection module 10 to directly play an audible audio injection signal, i.e., the second audio injection signal, through the controller, temporarily disregarding the directional audio injection mode. Furthermore, this step can be understood as being performed concurrently with the step in S120 that determines whether to enable the exclusive audio injection mode and confirms whether the user has a need for directional audio playback. Therefore, when it is confirmed that the user has an audio injection need, the audio injection function can be provided promptly, creating an audio injection scenario for the user.

[0085] Figure 6This is a flowchart of another whole-house directional audio injection system control method provided in an embodiment of the present invention, see reference. Figure 6 First, as described in the previous embodiment, in this embodiment of the invention, an infrared detection module can also be set in the whole-house directional audio injection system, and the infrared detection module is electrically connected to the controller. Based on this, based on the control method provided in the above embodiment, in S130, when the audio injection exclusive mode activation command is received, the control drive mechanism adjusts the position and / or orientation of the audio injection module, which may specifically include the following steps:

[0086] Upon receiving the command to enable the audio injection exclusive mode, the infrared detection module is controlled in real time to send infrared detection light to the detection area and receive the infrared reflected light returned by the detection area.

[0087] The location of the user in the detection area is determined in real time based on the infrared reflected light.

[0088] The control drive mechanism adjusts the position and / or orientation of the audio injection module in real time so that the audio injection module is aligned with the user's location.

[0089] For details not covered in this embodiment, please refer to the previous embodiment.

[0090] like Figure 6 As shown in the figure, the whole-house directional audio injection system control method provided in this embodiment includes the following steps:

[0091] S210. Determine whether audio injection mode is enabled.

[0092] S220. Upon receiving an audio injection mode enable command, determine whether to enable the exclusive audio injection mode.

[0093] S231. Upon receiving the instruction to enable the audio injection exclusive mode, the infrared detection module is controlled in real time to send infrared detection light to the detection area and receive the infrared reflected light returned by the detection area.

[0094] S232. Determine the user's location in the detection area in real time based on the infrared reflected light.

[0095] S233. Control the drive mechanism to adjust the position and / or orientation of the audio injection module in real time so that the audio injection module is aligned with the user's position, and control the audio injection module to play at least two preset frequency ultrasonic signals so as to form a first audio injection signal in a predetermined area under the current position and orientation of the audio injection module.

[0096] The control method provided in this embodiment supplements the steps of determining the user's location and refines the steps of accurately providing directional audio injection to the user. Through this control method, it is possible to follow the user's real-time movement and provide the user with accurate audio injection sound, ensuring that the user can feel the audio injection effect in any position in the kitchen space during the cooking process, effectively guaranteeing the user experience of directional audio injection.

[0097] Figure 7 This is a flowchart of another whole-house directional audio injection system control method provided in an embodiment of the present invention, see reference. Figure 7 Similarly, as described in the previous embodiment, this embodiment of the invention can also include a cloud platform in the whole-house directional audio injection system, with the controller communicating with the cloud platform. Based on this, and building upon the control method provided in the above embodiments, in step S130, upon receiving an instruction to activate the exclusive audio injection mode, the drive mechanism is controlled to adjust the position and / or orientation of the audio injection module, and the audio injection module is controlled to play at least two preset frequency ultrasonic signals to form a first audio injection signal within a predetermined area at the current position and orientation of the audio injection module. Specifically, this may include the following steps:

[0098] Upon receiving the command to enable the audio injection exclusive mode, obtain the usage status of the home appliances communicating with the cloud platform;

[0099] The control drive mechanism adjusts the position and / or orientation of the audio injection module, and controls the audio injection module to play at least two preset ultrasonic signals of preset frequencies corresponding to the usage status of the household appliance, so as to form a first audio injection signal in a predetermined area under the current position and orientation of the audio injection module.

[0100] For details not covered in this embodiment, please refer to the previous embodiment.

[0101] like Figure 7 As shown in the figure, the whole-house directional audio injection system control method provided in this embodiment includes the following steps:

[0102] S310, Determine whether audio injection mode is enabled.

[0103] S320. When receiving an audio injection mode enable command, determine whether to enable the exclusive audio injection mode.

[0104] S331. Upon receiving the instruction to enable the audio injection exclusive mode, obtain the usage status of the home appliances communicating with the cloud platform.

[0105] S332. Control the drive mechanism to adjust the position and / or orientation of the audio injection module, and control the audio injection module to play at least two preset ultrasonic signals of preset frequencies corresponding to the usage status of the household appliance, so as to form a first audio injection signal in a predetermined area under the current position and orientation of the audio injection module.

[0106] The control method provided in this embodiment supplements the step of identifying the household appliances that generate noise in the kitchen space. This allows for matching the actual noise generated by different numbers and types of kitchen appliances in the user's kitchen space, providing targeted directional audio injection, effectively diverting the user's attention, and reducing the user's perception of noise.

[0107] To clearly illustrate the interaction process of the whole-house directional audio injection system in practical application according to the embodiments of the present invention, the complete set of program interaction logic of the system is now provided. Figure 8 This is a control logic diagram of a whole-house directional audio injection system provided in an embodiment of the present invention, for reference. Figure 8 As mentioned above, the whole-house directional audio injection system provided in this embodiment has an audio injection mode and an audio injection exclusive mode, which involves an active interaction process with the user, and determines whether to activate the above two modes based on the user's wishes. Specifically:

[0108] S41. When the user starts the range hood, the user determination program is started;

[0109] S42. Perform the first layer of logic judgment, that is, determine whether to start the audio injection mode; at this time, the user will intervene in the judgment, that is, the user will select the mode by operation;

[0110] S421. When the user selects "Yes", initiate the audio injection exclusive mode determination;

[0111] S422. When the user selects "No", the range hood starts normally until it shuts down.

[0112] S43. Perform the second layer of logic to determine whether to activate the audio injection exclusive mode; at this time, the user will also intervene in the determination, that is, the operation will select the mode (not shown in the figure);

[0113] S431. When the user selects "Yes", the audio injection exclusive mode is enabled until the end;

[0114] S432. If the user further selects "No", continue running the audio injection mode until the end.

[0115] S44. The user's location is determined by the infrared detection module, i.e., the infrared sensor determines the location of the person.

[0116] S451. Move the audio injection module to a specific location, thereby placing the audio injection module in the area where the personnel are located;

[0117] S452. Adjust the extension length of each telescopic rod; this allows the audio injection module to face the location of the personnel.

[0118] S46. Determine the use of electrical appliances by personnel to determine the electrical noise level in the kitchen space;

[0119] S47. Is a single electrical appliance used?

[0120] S471. When it is confirmed that an appliance is in use, audio is injected using the audio of the single appliance until the end.

[0121] S472. When it is confirmed that it is not an appliance being used, identify the appliance being used, that is, obtain the type of appliance being used;

[0122] S4721. For the currently used electrical appliances, output the corresponding multi-fusion audio and inject the audio to adapt to the noise scene generated by multiple electrical appliances until the end.

[0123] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, combinations, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A whole-house directional audio injection system, characterized in that, It includes a controller, an audio injection module (10), and a drive mechanism (20); The controller is electrically connected to the audio injection module (10) and the drive mechanism (20) respectively. The drive mechanism (20) is used to be installed on the wall, and the audio injection module (10) is installed on the drive mechanism (20). The controller is used to control the drive mechanism (20) to adjust the position and / or orientation of the audio injection module (10); The controller is also used to control the audio injection module (10) to play at least two preset frequency ultrasonic signals to form a first audio injection signal in a predetermined area under the current position and orientation of the audio injection module (10). The first audio injection signal is the difference frequency signal of the at least two preset frequency ultrasonic signals, and the frequency of the difference frequency signal is within the audible sound frequency range.

2. The whole-house directional audio injection system according to claim 1, characterized in that, The audio injection module (10) includes at least two ultrasonic transducers (11), and the controller is electrically connected to the at least two ultrasonic transducers (11) respectively. The controller is used to send corresponding ultrasonic frequency band electrical signals to each of the ultrasonic transducers (11); The at least two ultrasonic transducers (11) are respectively used to convert the received ultrasonic frequency band electrical signal into the ultrasonic signal of the corresponding preset frequency and output it in a preset direction, so that the ultrasonic signals of the at least two preset frequencies form the difference frequency signal in the predetermined area.

3. The whole-house directional audio injection system according to claim 1, characterized in that, The controller is also used to control the audio injection module (10) to play a second audio injection signal, the frequency of which is within the audible frequency range.

4. The whole-house directional audio injection system according to claim 3, characterized in that, The audio injection module (10) further includes at least one speaker, and the controller is electrically connected to the at least one speaker; The controller is used to send electrical signals for the corresponding audible frequency band to each of the speakers respectively; The at least one loudspeaker is used to convert the received audible frequency band electrical signal into the second audio injection signal for output.

5. The whole-house directional audio injection system according to claim 1, characterized in that, The drive mechanism (20) includes a slide rail (21), a slide plate (22), and at least two telescopic rods (23); The slide rail (21) is used to install on the wall, the slide plate (22) is slidably connected to the slide rail (21), and the audio injection module (10) is fixed to the slide plate (22) at different positions by the at least two telescopic rods (23); The slide plate (22) is configured to move to a preset position on the slide rail (21) under the control of the controller, and the telescopic rod (23) is configured to extend and retract to a preset length under the control of the controller.

6. The whole-house directional audio injection system according to claim 1, characterized in that, It also includes an infrared detection module, which is electrically connected to the controller; The infrared detection module is used to send infrared detection light to the detection area and receive infrared reflected light returned by the detection area; The controller is used to determine the location of the user in the detection area based on the infrared reflected light.

7. The whole-house directional audio injection system according to claim 1, characterized in that, It also includes a cloud platform, and the controller is communicatively connected to the cloud platform; the controller is used to obtain the usage status of home appliances that communicate with the cloud platform.

8. A control method for a whole-house directional audio injection system, characterized in that, Applied to the whole-house directional audio injection system as described in any one of claims 1-7, the control method includes: Determine whether audio injection mode is enabled; Upon receiving an audio injection mode enable command, determine whether to enable the exclusive audio injection mode. Upon receiving an instruction to activate the exclusive audio injection mode, the drive mechanism is controlled to adjust the position and / or orientation of the audio injection module, and the audio injection module is controlled to play at least two preset frequency ultrasonic signals to form a first audio injection signal within a predetermined area under the current position and orientation of the audio injection module; wherein, the first audio injection signal is the difference frequency signal of the at least two preset frequency ultrasonic signals, and the frequency of the difference frequency signal is within the audible sound frequency range.

9. The control method according to claim 8, characterized in that, After determining whether the audio injection mode is enabled, upon receiving an instruction to enable the exclusive audio injection mode, the driving mechanism is controlled to adjust the position and / or orientation of the audio injection module, and the audio injection module is controlled to play at least two preset frequency ultrasonic signals. Before forming a first audio injection signal within a predetermined area under the current position and orientation of the audio injection module, the following steps are also included: Upon receiving an audio injection mode activation command, the audio injection module is controlled to play a second audio injection signal; wherein the frequency of the second audio injection signal is within the audible frequency range.

10. The control method according to claim 8, characterized in that, The whole-house directional audio injection system also includes an infrared detection module, which is electrically connected to the controller. Upon receiving a command to enable the dedicated audio injection mode, the driver mechanism is controlled to adjust the position and / or orientation of the audio injection module, including: Upon receiving the command to enable the exclusive audio injection mode, the infrared detection module is controlled in real time to send infrared detection light to the detection area and receive the infrared reflected light returned by the detection area. The location of the user in the detection area is determined in real time based on the infrared reflected light. The drive mechanism is controlled to adjust the position and / or orientation of the audio injection module in real time so that the audio injection module is aligned with the user's location.

11. The control method according to claim 8, characterized in that, The whole-house directional audio injection system also includes a cloud platform, and the controller is communicatively connected to the cloud platform; Upon receiving an instruction to activate the exclusive audio injection mode, the drive mechanism is controlled to adjust the position and / or orientation of the audio injection module, and the audio injection module is controlled to play at least two preset frequency ultrasonic signals to form a first audio injection signal within a predetermined area under the current position and orientation of the audio injection module, including: Upon receiving the instruction to enable the audio injection exclusive mode, the usage status of the home appliances communicating with the cloud platform is obtained; The drive mechanism is controlled to adjust the position and / or orientation of the audio injection module, and the audio injection module is controlled to play at least two preset ultrasonic signals of preset frequencies corresponding to the usage status of the household appliance, so as to form the first audio injection signal in a predetermined area under the current position and orientation of the audio injection module.

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