Intelligent kitchen appliance control method based on soundprint energy and intelligent kitchen appliances

Abstract

This application relates to the field of smart appliance technology, and in particular to a smart kitchen appliance control method and smart kitchen appliance based on sound pressure energy. The method includes: real-time acquisition of sound pressure signals from a cookware, and extraction of the characteristics of the sound pressure signals; based on the characteristics of the sound pressure signals, obtaining the boiling energy corresponding to the liquid boiling in the cookware, the dry-burning energy corresponding to the cookware being dry-burned, and the energy ratio of the dry-burning energy; based on the boiling energy, the dry-burning energy, and the energy ratio, determining whether the cookware is in a dry-burning state, triggering a dry-burning alarm when it is in a dry-burning state, and controlling the range hood fan to operate at the corresponding setting. This application utilizes sound pressure signals to identify the dry-burning state of the cookware, triggering an early warning before the moisture completely evaporates, solving the technical problem of lagging dry-burning detection in existing technologies, and proactively controlling the operation of the range hood fan.

Description

Technical Field

[0001] This application relates to the field of smart appliance technology, and in particular to a smart kitchen appliance control method based on soundprint energy and a smart kitchen appliance. Background Technology

[0002] As people's living standards improve and technologies such as the internet, big data, artificial intelligence, and voice interaction become more widespread, traditional lifestyles are gradually changing, and the use of home appliances is increasingly moving towards intelligentization. While bringing more convenience to users, the functions of various home appliances are also becoming more diversified.

[0003] During cooking, users may become distracted, causing cookware to dry-burn, producing excessive fumes and even posing a fire hazard. Currently, range hoods cannot actively detect dry-burning conditions, and existing technologies to prevent dry-burning mostly rely on temperature sensors or smoke detectors, which are slow to react and cannot predict the risk of dry-burning in advance to take proactive measures. Summary of the Invention

[0004] Therefore, it is necessary to provide a smart kitchen appliance control method and a smart kitchen appliance based on sound signature energy to address the aforementioned technical problems.

[0005] In a first aspect, embodiments of the present invention propose a smart kitchen appliance control method based on sound signature energy, the method comprising:

[0006] The sound pressure signal of the cookware is acquired in real time, and the characteristics of the sound pressure signal are extracted.

[0007] Based on the characteristics of the sound pressure signal, the boiling energy corresponding to the boiling of the liquid in the pot, the dry burning energy corresponding to the dry burning of the pot, and the energy ratio of the dry burning energy are obtained.

[0008] Based on the boiling energy, the dry-burning energy, and the energy ratio, it is determined whether the cookware is in a dry-burning state, and if it is in a dry-burning state, a dry-burning alarm is triggered, and the range hood fan is controlled to run to the corresponding level.

[0009] In some embodiments, determining whether the cookware is in a dry-burning state based on the boiling energy, the dry-burning energy, and the energy ratio includes:

[0010] If the rate of decrease of the boiling energy within a first preset time is greater than a first threshold, and the rate of increase of the dry-burning energy within a second preset time is greater than a second threshold, and the duration for which the energy ratio is greater than a third threshold is greater than a fourth threshold, then the cookware is determined to be in a dry-burning state.

[0011] In some embodiments, the method further includes:

[0012] If the boiling energy is greater than the fifth threshold and the energy ratio is less than the sixth threshold, then the liquid in the cookware is determined to be in a boiling state, and the range hood fan is controlled to run at the corresponding level.

[0013] In some embodiments, the method further includes:

[0014] Based on the characteristics of the sound pressure signal, the spectral entropy of the sound pressure signal is obtained;

[0015] If the peak value of the boiling energy is greater than the seventh threshold and the spectral entropy is less than the eighth threshold, then the cookware is determined to be in a stir-fry state, and the range hood fan is controlled to run at the corresponding level.

[0016] In some embodiments, the method further includes:

[0017] If the fluctuation of the boiling energy is less than the ninth threshold, and the spectral entropy is greater than the tenth threshold but less than the eleventh threshold, then the cookware is determined to be in a frying state, and the range hood fan is controlled to run at the corresponding level.

[0018] In some embodiments, the method further includes:

[0019] After detecting that the cookware is in a heating state, if the duration for which the boiling energy is less than the twelfth threshold is greater than the thirteenth threshold, it is determined that the cookware is in a dry-burning state, triggering a dry-burning alarm, and controlling the stove to operate at the corresponding setting.

[0020] In some embodiments, the method further includes:

[0021] The temperature of the liquid inside the pot is determined based on the boiling energy.

[0022] Based on the temperature, the fan of the range hood is controlled to operate at the corresponding speed.

[0023] In some embodiments, the method further includes:

[0024] The time-domain signal of the boiling energy is obtained, and the main cycle of the boiling of the liquid in the pot is determined based on the time-domain signal.

[0025] If the boiling energy is greater than the fourteenth threshold and the main cycle is greater than the fifteenth threshold, then the liquid in the pot is determined to be in the boiling period, and the range hood fan is controlled to run at the corresponding level; if the boiling energy is less than or equal to the fourteenth threshold, then the liquid in the pot is determined to be in the calming period; when in the calming period, if the rate of increase of the boiling energy within a third preset time is greater than the fifteenth threshold, then the pot is determined to be in an overflowing state, and the stove and the range hood fan are controlled to run at the corresponding level.

[0026] In some embodiments, the method further includes:

[0027] When the liquid in the pot is boiling, a prompt signal is output to remind the user to add water, until the number of times the pot is boiling reaches the sixteenth threshold.

[0028] Secondly, embodiments of the present invention propose a smart kitchen appliance that employs the method described in the first aspect, wherein the smart kitchen appliance includes a range hood and a cooktop.

[0029] Compared to existing technologies, this technical solution has the following advantages: It collects the sound pressure signal of the cookware in real time and extracts the characteristics of the sound pressure signal. Based on the characteristics of the sound pressure signal, it obtains the boiling energy corresponding to the liquid boiling in the cookware, the dry-burning energy corresponding to the cookware dry-burning, and the energy ratio of the dry-burning energy. Based on the boiling energy, the dry-burning energy, and the energy ratio, it determines whether the cookware is in a dry-burning state, and triggers a dry-burning alarm when it is in a dry-burning state, and controls the range hood fan to operate at the corresponding speed. This application uses sound pressure signals to identify the dry-burning state of the cookware, triggers an early warning before the moisture completely evaporates, solves the technical problem of lagging dry-burning detection in existing technologies, and controls the operation of the range hood fan, proactively taking measures. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the module connection of a smart kitchen appliance according to an embodiment of the present invention;

[0031] Figure 2 This is a flowchart of the intelligent kitchen appliance control method based on soundprint energy according to the first embodiment of the present invention;

[0032] Figure 3 This is a flowchart of the intelligent kitchen appliance control method based on soundprint energy according to the second embodiment of the present invention;

[0033] Figure 4 This is a flowchart of an example embodiment of the intelligent kitchen appliance control method based on soundprint energy according to the present invention;

[0034] Figure 5 This is a flowchart of the intelligent kitchen appliance control method based on soundprint energy according to the third embodiment of the present invention. Detailed Implementation

[0035] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely some examples or embodiments of the present invention. For those skilled in the art, the present invention can be applied to other similar scenarios based on these drawings without creative effort. Unless obvious from the context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.

[0036] As indicated in this invention and the claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" do not specifically refer to the singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

[0037] While this invention makes various references to certain modules in an apparatus according to embodiments of the invention, any number of different modules can be used and run on a computing device and / or processor. Modules are merely illustrative, and different aspects of the apparatus and methods may use different modules.

[0038] It should be understood that when a unit or module is described as "connected" or "coupled" to other units, modules, or blocks, it may refer to a direct connection or coupling, or communication with other units, modules, or blocks, or the presence of intermediate units, modules, or blocks, unless the context explicitly indicates otherwise. The term "and / or" as used herein may include any and all combinations of one or more of the related listed items.

[0039] Figure 1 This is a schematic diagram of the module connection of a smart kitchen appliance according to an embodiment of the present invention. Figure 1 As shown, the smart kitchen appliances include a range hood and a cooktop. The range hood includes a main controller and a microphone module and a fan drive module connected to the main controller.

[0040] The microphone module is installed, for example, under the smoke hood or smoke baffle, and uses a microphone array to collect the sound pressure signal of the cookware. The frequency range of the sound pressure signal collected by the microphone array is 1Hz-20kHz.

[0041] The main controller determines whether the cookware is in a dry-burning state based on the sound pressure signal of the cookware, and triggers a dry-burning alarm when it is in a dry-burning state, and uses the fan drive module to control the fan.

[0042] In some embodiments, the smart kitchen appliance also includes an indicator light module, a switch module, a communication module, etc., connected to the main controller.

[0043] Figure 2 This is a flowchart of an intelligent kitchen appliance control method based on soundprint energy, according to an embodiment of the present invention. Figure 2 As shown, it includes the following steps:

[0044] S202: Real-time acquisition of sound pressure signals from the cookware, and extraction of the characteristics of the sound pressure signals.

[0045] The collected sound pressure signal is:

[0046] in, Indicates the sound pressure level; Indicates frequency; This indicates the phase angle.

[0047] Using Fast Fourier Transform, the characteristics of the sound pressure signal are extracted:

[0048]

[0049] in, Indicates the sampling time window; Represents frequency The complex amplitude at that point.

[0050] S204: Based on the characteristics of the sound pressure signal, obtain the boiling energy corresponding to the boiling of the liquid in the pot, the dry burning energy corresponding to the dry burning of the pot, and the energy ratio of the dry burning energy.

[0051] Calculating boiling energy :

[0052]

[0053] Boiling energy This represents the energy of noise generated in a specific frequency band (1kHz-5kHz) when bubbles burst during the boiling of a liquid.

[0054] Calculate dry-burning energy :

[0055]

[0056] Dry burning energy This indicates that when the liquid disappears during dry burning, the energy in the (1-5kHz) frequency band drops sharply. At the same time, the high-frequency micro-vibrations released by the thermal stress on the bottom of the metal pot will emit high-frequency sound energy (8-12kHz).

[0057] Calculate the energy ratio :

[0058]

[0059] Where 0≤R≤1 represents the quantitative indicator of dry burning risk.

[0060] S206: Based on the boiling energy, the dry-burning energy, and the energy ratio, determine whether the cookware is in a dry-burning state, and trigger a dry-burning alarm when it is in a dry-burning state, and control the range hood fan to run to the corresponding level.

[0061] Based on steps S202-S206 above, the sound pressure signal of the cookware is collected in real time, and the characteristics of the sound pressure signal are extracted. Based on the characteristics of the sound pressure signal, the boiling energy corresponding to the boiling of the liquid in the cookware, the dry-burning energy corresponding to the dry-burning of the cookware, and the energy ratio of the dry-burning energy are obtained. Based on the boiling energy, the dry-burning energy, and the energy ratio, it is determined whether the cookware is in a dry-burning state, and a dry-burning alarm is triggered when it is in a dry-burning state, and the range hood fan is controlled to run at the corresponding speed. This application uses sound pressure signals to identify the dry-burning state of the cookware, triggers an early warning before the moisture evaporates completely, solves the technical problem of lagging dry-burning detection in the prior art, and controls the operation of the range hood fan to take proactive measures.

[0062] In some embodiments, determining whether the cookware is in a dry-burning state based on the boiling energy, the dry-burning energy, and the energy ratio includes: if the rate of decrease of the boiling energy within a first preset time is greater than a first threshold, and the rate of increase of the dry-burning energy within a second preset time is greater than a second threshold, and the duration for which the energy ratio is greater than a third threshold is greater than a fourth threshold, then the cookware is determined to be in a dry-burning state.

[0063] For example, boiling energy If the rate of decrease is greater than 60% within the first preset time Δt1, it indicates that the liquid evaporates quickly and the dry-burning energy is low. If the rate of increase is greater than 40% within the second preset time Δt2, it indicates that the high-frequency vibration of the metal pot bottom is enhanced, and The duration is 30 seconds, indicating the dry-burning energy. The proportion is large. When the above conditions are met simultaneously, it is determined that the cookware is in a dry-burning state, and the range hood fan is controlled to run at the highest speed.

[0064] In some embodiments, the method further includes: if the boiling energy is greater than a fifth threshold and the energy ratio is less than a sixth threshold, then determining that the liquid in the cookware is in a boiling state, and controlling the fan of the range hood to operate at the corresponding level.

[0065] For example, boiling energy ,and If the liquid in the pot is boiling, the range hood fan will be controlled to maintain the current setting. The initial reference value is 0.02 Pa² / Hz.

[0066] In this embodiment, the boiling state of the cookware is identified by sound pressure signal, and the range hood fan is controlled to run at the corresponding level to achieve intelligent control of the range hood.

[0067] In some embodiments, the method further includes: obtaining the spectral entropy of the sound pressure signal based on the characteristics of the sound pressure signal; if the peak value of the boiling energy is greater than a seventh threshold and the spectral entropy is less than an eighth threshold, then determining that the cookware is in a stir-frying state, and controlling the fan of the range hood to run to the corresponding level.

[0068] For example, boiling energy The peak value is greater than 3α and the spectral entropy is greater than 3α. If the cookware is in a high-heat stir-fry state, the range hood fan will be controlled to operate at the high-heat stir-fry setting.

[0069] in, The more concentrated the spectrum, the smaller the spectral entropy H.

[0070] In this embodiment, the stir-frying state of the cookware is identified by sound pressure signal, and the range hood fan is controlled to run at the corresponding level to achieve intelligent control of the range hood.

[0071] In some embodiments, the method further includes: if the fluctuation of the boiling energy is less than a ninth threshold, and the spectral entropy is greater than a tenth threshold and less than an eleventh threshold, then the cookware is determined to be in a frying state, and the fan of the range hood is controlled to run to the corresponding level.

[0072] For example, boiling energy The fluctuation is <10% (stable oil bubble sound), and 1.5 < spectral entropy. If the cookware is in a frying state, the range hood fan will be controlled to run at the medium speed.

[0073] In this embodiment, the frying state of the cookware is identified by sound pressure signals, and the range hood fan is controlled to operate at the corresponding level to achieve intelligent control of the range hood.

[0074] In some embodiments, the method further includes: after detecting that the cookware is in a heating state, if the duration for which the boiling energy is less than the twelfth threshold is greater than the thirteenth threshold, then determining that the cookware is in a dry-burning state, triggering a dry-burning alarm, and controlling the stove to operate at the corresponding setting.

[0075] For example, boiling energy (At this time, there is no boiling sound), and the linked stove detects that the current gas stove is at medium or higher speed, or the induction cooker power is >1.5kW (indicating heating status), and the duration is >5 minutes, then it is determined that the pot is in a dry-burning state, and the stove power is automatically reduced to 800W or low speed, and an audible and visual alarm signal is issued: "Please check the food in the pot".

[0076] In this embodiment, sound pressure signals are used to identify the empty cooking state of the cookware and control the stove to operate at the corresponding setting, thereby achieving early warning of the empty cooking state.

[0077] Existing methods for monitoring frying temperatures rely on contact probes (which are prone to oil splattering and are unhygienic) or infrared thermometry (which is greatly affected by oil fumes), with an error of >15℃. These methods cannot quantify oil temperature in real time to provide users with cooking guidance and may lead to the risk of overheating of oil or even fire.

[0078] To solve the above-mentioned technical problems, in some embodiments, such as Figure 3 As shown, the method further includes:

[0079] S302: Determine the temperature of the liquid inside the pot based on the boiling energy.

[0080] Calculate temperature based on boiling energy. :

[0081]

[0082] in, Represents the slope coefficient This indicates the intercept temperature.

[0083] S304: Based on the temperature, control the fan of the range hood to operate at the corresponding speed.

[0084] Based on steps S302-S304 above, this application determines the temperature of the liquid inside the cookware based on boiling energy, without needing to contact the liquid inside the cookware, enabling accurate temperature detection. The range hood fan is then controlled to operate at the corresponding speed based on the temperature, achieving intelligent control.

[0085] In one example embodiment, the overall process of temperature detection is as follows: Figure 4 As shown, based on boiling energy Calculate the temperature of the liquid ,judge If the temperature exceeds 300℃, turn off the stove power and sound an alarm, while simultaneously increasing the range hood's setting to enhance heat dissipation. If not, display the real-time temperature on the range hood and reassess. > Check if the preset temperature is set. If so, remind the user and adjust the stove to reduce the heat. If not, maintain the current setting on the stove and range hood.

[0086] During the stewing process, the range hood fan runs at a high speed continuously, while the actual boiling period only accounts for 30% of the time. Current technology cannot identify the boiling period, resulting in more than 40% of the electricity being wasted.

[0087] In some embodiments, such as Figure 5As shown, the method further includes: acquiring the time-domain signal of the boiling energy, determining the main period of boiling of the liquid in the pot based on the time-domain signal; if the boiling energy is greater than the fourteenth threshold and the main period is greater than the fifteenth threshold, then determining that the liquid in the pot is in the boiling period, and controlling the fan of the range hood to run to the corresponding level; if the boiling energy is less than or equal to the fourteenth threshold, then determining that the liquid in the pot is in the calming period; when in the calming period, if the rate of increase of the boiling energy within a third preset time is greater than the fifteenth threshold, then determining that the pot is in the overflowing state, and controlling the fans of the stove and the range hood to run to the corresponding level.

[0088] Calculate the boiling master period for:

[0089]

[0090] in, Represents the autocorrelation function The time-domain signal representing boiling energy.

[0091] During the boiling period, the liquid undergoes violent vaporization, producing dense bubbles and the sound of them bursting; boiling energy... Significantly increased; during the remission period, thermal convection weakens, and boiling energy... It drops to the baseline level. Additionally, the boiling main cycle of typical soup-making or steaming modes, due to the relatively large amount of water, is... During the calming period, a sudden increase in heat or food blockage can cause foam to accumulate rapidly, leading to boiling energy. The abnormally high temperature caused the pot to overflow.

[0092] Based on this, in this embodiment, the boiling and settling periods of the liquid in the pot are identified by sound pressure signals, and the overflow state is judged. The fan is then controlled to operate at the corresponding level, realizing intelligent control of the range hood and avoiding the risk of overflow.

[0093] For example, and If the liquid in the pot is in a boiling state, the range hood fan will be set to the medium speed. Indicates the boiling threshold coefficient. Indicates the first 5 minutes The average value.

[0094] If not satisfied If the cookware is in a resting state, then it is determined that the cookware is in a resting state. During a resting state, If the value is 0.5, it is determined that the pot is overflowing, and the fan is controlled to run at a high level while the heat of the stove is reduced.

[0095] in, .

[0096] Many stewing processes require a fixed number of boiling times (for example, when cooking noodles or dumplings, many people often need to boil and add water to stop boiling three times in a row, which can be customized by the user). In similar cooking processes, users need to count the number of boiling times themselves, resulting in a poor cooking experience.

[0097] To address the aforementioned technical problems, in some embodiments, the method further includes: when the liquid in the pot is in the boiling stage, outputting a prompt signal to the user to add water, until the number of times the pot is in the boiling stage reaches the sixteenth threshold.

[0098] In this embodiment, after determining the boiling period, the user is prompted to add water. At the same time, the number of boiling periods is automatically counted. Once the number of boiling periods reaches a threshold, the prompt will stop, thus improving the user experience.

[0099] It should be understood that although the steps in the flowchart above are shown sequentially as indicated by the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowchart above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages in other steps.

[0100] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments of the above methods. Any references to memory, storage, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, or optical storage, etc. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc.

[0101] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0102] The above embodiments merely illustrate 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 the invention patent. 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 protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A voiceprint energy-based intelligent kitchen electrical appliance control method, characterized in that, The method comprises: Real-time acquisition of the sound pressure signal of the pot, and extraction of the feature of the sound pressure signal; Based on the feature of the sound pressure signal, the corresponding boiling energy when the liquid in the pot is boiling, the corresponding dry burning energy when the pot is dry burning, and the energy ratio of the dry burning energy are obtained; Based on the boiling energy, the dry burning energy and the energy ratio, it is determined whether the pot is in a dry burning state, and a dry burning alarm is triggered when it is in a dry burning state, and the fan of the range hood is controlled to operate to the corresponding gear.

2. The method of claim 1, wherein, The determination of whether the pot is in a dry burning state based on the boiling energy, the dry burning energy and the energy ratio comprises: If the decline rate of the boiling energy within a first preset time is greater than a first threshold value, and the rising rate of the dry burning energy within a second preset time is greater than a second threshold value, and the duration of the energy ratio being greater than a third threshold value is greater than a fourth threshold value, it is determined that the pot is in a dry burning state.

3. The method of claim 1, wherein, The method further comprises: If the boiling energy is greater than a fifth threshold value, and the energy ratio is less than a sixth threshold value, it is determined that the liquid in the pot is in a boiling state, and the fan of the range hood is controlled to operate to the corresponding gear.

4. The method of claim 1, wherein, The method further comprises: Based on the feature of the sound pressure signal, the spectral entropy of the sound pressure signal is obtained; If the peak value of the boiling energy is greater than a seventh threshold value, and the spectral entropy is less than an eighth threshold value, it is determined that the pot is in a high-heat state, and the fan of the range hood is controlled to operate to the corresponding gear.

5. The method of claim 4, wherein, The method further comprises: If the fluctuation of the boiling energy is less than a ninth threshold value, and the spectral entropy is greater than a tenth threshold value and less than an eleventh threshold value, it is determined that the pot is in a frying state, and the fan of the range hood is controlled to operate to the corresponding gear.

6. The method of claim 1, wherein, The method further comprises: After detecting that the pot is in a heating state, if the duration of the boiling energy being less than a twelfth threshold value is greater than a thirteenth threshold value, it is determined that the pot is in an empty burning state, an empty burning alarm is triggered, and the stove is controlled to operate to the corresponding gear.

7. The method of claim 1, wherein, The method further comprises: Based on the boiling energy, the temperature of the liquid in the pot is determined; Based on the temperature, the fan of the range hood is controlled to operate to the corresponding gear.

8. The method of claim 1, wherein, The method further comprises: The time domain signal of the boiling energy is obtained, and based on the time domain signal, the main period when the liquid in the pot is boiling is determined; If the boiling energy is greater than a fourteenth threshold value, and the main period is greater than a fifteenth threshold value, it is determined that the liquid in the pot is in a boiling period, and the fan of the range hood is controlled to operate to the corresponding gear; if the boiling energy is less than or equal to the fourteenth threshold value, it is determined that the liquid in the pot is in a calming period; when in the calming period, if the rising rate of the boiling energy within a third preset time is greater than a fifteenth threshold value, it is determined that the pot is in a pot overflowing state, and the stove and the fan of the range hood are controlled to operate to the corresponding gear.

9. The method of claim 8, wherein, The method further comprises: When the liquid in the pot is in a boiling period, a prompt signal prompting the user to add water is output until the number of times in the boiling period reaches a sixteenth threshold value.

10. An intelligent kitchen electrical appliance, characterized in that, The intelligent kitchen appliance adopts the method according to any one of claims 1-9, and the intelligent kitchen appliance comprises a range hood and a stove.

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