Firepower adjusting method and device for kitchen range

Abstract

The invention discloses a firepower adjusting method and device of a cooker. The method comprises the following steps: acquiring a current vibration signal of a target cooker; analyzing and processing the current vibration signal to obtain a current power spectrum density and a current amplitude peak value corresponding to the current vibration signal; a preset vibration signal database is searched for a preset power spectral density range matched with the current power spectral density, a preset amplitude peak value range matched with the current amplitude peak value is searched for, and the current boiling degree of the liquid in the target pot is determined; and determining a corresponding target gas valve opening degree according to the current boiling degree, and controlling the gas valve opening degree of the stove to be the target gas valve opening degree so as to adjust the fire power of the stove. The boiling degree of the liquid in the cookware can be determined through the vibration signal of the cookware, the firepower of the cooker is automatically adjusted, and potential safety hazards caused by splashing of the liquid in the cookware are avoided.

Description

Technical Field

[0001] The present application relates to the technical field of kitchen utensils, and particularly relates to a method and device for adjusting the firepower of a cooker Background Art

[0002] In daily life, it is often necessary to heat the leftovers from the previous meal with a steamer for reuse. However, during the process of steaming dishes, the following problems may occur: Since the cooker cannot dynamically adjust the firepower according to the steaming process, after the water in the steamer boils, the high-temperature steam will continuously lift the lid of the steamer and splash onto the cooker top, resulting in the area around the cooker being wet and even potentially causing safety hazards

[0003] Currently, when faced with this problem, most families mainly solve the problem of splashing caused by the condensation of water vapor by manually adjusting the firepower knob of the cooker to reduce the gear or uncovering the lid of the steamer. Currently, although there are some cookers with firepower adjustment functions on the market, they all have the following defects: (1) The temperature sensor is easily interfered by steam and has low detection accuracy; (2) The timing control cannot adapt to variables such as the amount of ingredients and water, and has poor flexibility; (3) There is a lack of direct feedback on the physical state of the pot, which is likely to cause energy waste or cooking failure Summary of the Invention

[0004] The present application provides a method and device for adjusting the firepower of a cooker. The present application can determine the boiling degree of the liquid in the pot through the vibration signal of the pot, so as to automatically adjust the firepower of the cooker, and avoid poor cooking effects and safety hazards caused by the splashing of the liquid in the pot

[0005] On the one hand, the present application provides a method for adjusting the firepower of a cooker, and the method includes:

[0006] When heating a target pot on the cooker, obtain the current vibration signal of the target pot

[0007] Analyze and process the current vibration signal to obtain the current power spectral density and the current amplitude peak value corresponding to the current vibration signal

[0008] In a preset vibration signal database, search for a preset power spectral density range that matches the current power spectral density to obtain a first search result, and search for a preset amplitude peak value range that matches the current amplitude peak value to obtain a second search result

[0009] Determine the current boiling degree of the liquid in the target pot according to the first search result and the second search result; the preset vibration signal database includes the corresponding relationships between multiple preset boiling degrees and multiple preset power spectral density ranges and multiple preset amplitude peak value ranges

[0010] Determine a corresponding target gas valve opening according to the current boiling degree, and control the gas valve opening of the cooker to the target gas valve opening to adjust the heating power of the cooker.

[0011] In an exemplary embodiment, the method further includes:

[0012] When heating a preset cookware on the cooker, obtain vibration signals of the liquid in the preset cookware at a plurality of the preset boiling degrees; a plurality of vibration signals are collected at each of the preset boiling degrees;

[0013] Analyze and process the plurality of vibration signals at each of the preset boiling degrees to obtain a plurality of power spectral densities and a plurality of amplitude peaks;

[0014] Determine a preset power spectral density range corresponding to each of the preset boiling degrees according to the plurality of power spectral densities;

[0015] Determine a preset amplitude peak range corresponding to each of the preset boiling degrees according to the plurality of amplitude peaks;

[0016] Construct the preset vibration signal database according to the preset power spectral density ranges and preset amplitude peak ranges corresponding to the respective preset boiling degrees.

[0017] In an exemplary embodiment, the obtaining the vibration signals of the liquid in the preset cookware at a plurality of the preset boiling degrees when heating the preset cookware on the cooker includes:

[0018] When the preset cookware is heated on the cooker, obtain the temperature of the liquid in the preset cookware;

[0019] Determine the preset boiling degree corresponding to the liquid in the preset cookware according to the temperature of the liquid in the preset cookware and a preset temperature threshold;

[0020] Obtain the vibration signals of the liquid in the preset cookware at a plurality of the preset boiling degrees.

[0021] In an exemplary embodiment, the determining the preset boiling degree corresponding to the liquid in the preset cookware according to the temperature of the liquid in the preset cookware and a preset temperature threshold includes:

[0022] Determine a first preset temperature threshold and a second preset temperature threshold according to the boiling point of the liquid in the preset cookware; both the first preset temperature threshold and the second preset temperature threshold are less than the boiling point of the liquid in the preset cookware, and the difference between the first preset temperature threshold and the boiling point is greater than the difference between the second preset temperature threshold and the boiling point;

[0023] If the temperature of the liquid in the preset cookware is less than or equal to the first preset temperature threshold, determine that the preset boiling degree is the first preset boiling degree;

[0024] If the temperature of the liquid in the preset cookware is greater than the first preset temperature threshold and less than the second preset temperature threshold, determine that the preset boiling degree is the second preset boiling degree;

[0025] If the temperature of the liquid in the preset cookware is greater than or equal to the second preset temperature threshold, determine that the preset boiling degree is the third preset boiling degree.

[0026] In an exemplary embodiment, the determining a target gas valve opening according to the current boiling degree and controlling the gas valve opening of the cooktop to be the target gas valve opening to adjust the firepower of the cooktop includes:

[0027] Search for a gas valve opening that matches the current boiling degree in a preset gas valve opening database to obtain the target gas valve opening; the preset gas valve opening database includes correspondences between multiple preset boiling degrees and multiple preset gas valve openings; the preset boiling degree and the preset gas valve opening are negatively correlated;

[0028] Control the gas valve opening of the cooktop to be the target gas valve opening to adjust the firepower of the cooktop.

[0029] In an exemplary embodiment, the analyzing and processing the current vibration signal to obtain the current power spectral density and the current amplitude peak corresponding to the current vibration signal includes:

[0030] Perform filtering processing on the current vibration signal to remove noise in the current vibration signal to obtain a filtered vibration signal;

[0031] Extract the filtered vibration signal to obtain the current power spectral density and the current amplitude peak.

[0032] In an exemplary embodiment, the method further includes:

[0033] Obtain the vibration signal of the preset cookware in a dry-burn state;

[0034] Determine the warning amplitude peak of the preset cookware according to the vibration signal in the dry-burn state;

[0035] When it is detected that the current amplitude peak is consistent with the warning amplitude peak, close the gas valve of the cooktop.

[0036] In an exemplary embodiment, after determining a corresponding target gas valve opening according to the current boiling degree and controlling the gas valve opening of the cooktop to the target gas valve opening to adjust the firepower of the cooktop, the method includes:

[0037] When it is detected that the target gas valve opening is a preset gas valve opening threshold, obtain the current liquid level of the liquid in the target cookware; the preset gas valve opening threshold is less than any of the preset gas valve openings in the preset gas valve opening database other than the preset gas valve opening threshold;

[0038] Search in the preset dry - out duration database for the dry - out duration that matches the current liquid level to obtain the target dry - out duration; the preset dry - out duration database includes the corresponding relationship between the liquid level and the dry - out duration;

[0039] When it is detected that the duration for which the gas valve of the cooktop maintains the preset gas valve opening threshold reaches the target dry - out duration, close the gas valve of the cooktop.

[0040] In an exemplary embodiment, the method further includes:

[0041] When the gas valve opening of the preset cookware is the preset gas valve opening threshold, obtain the durations corresponding to the dry - out states of the preset cookware at multiple liquid levels to obtain the corresponding relationship between the liquid level and the dry - out duration;

[0042] According to the corresponding relationship between the liquid level and the dry - out duration, obtain the preset dry - out duration database.

[0043] On the other hand, a firepower adjustment device for a cooktop is provided. The device includes:

[0044] A signal acquisition module, configured to obtain the current vibration signal of the target cookware when heating the target cookware on the cooktop;

[0045] An analysis module, configured to analyze and process the current vibration signal to obtain the current power spectral density and the current amplitude peak value corresponding to the current vibration signal;

[0046] A search module, configured to search in the preset vibration signal database for the preset power spectral density range that matches the current power spectral density to obtain a first search result, and search for the preset amplitude peak value range that matches the current amplitude peak value to obtain a second search result;

[0047] A determination module, configured to determine the current boiling degree of the liquid in the target cookware according to the first search result and the second search result; the preset vibration signal database includes the corresponding relationships between multiple preset boiling degrees, multiple preset power spectral density ranges, and multiple preset amplitude peak ranges;

[0048] A control module, configured to determine a corresponding target gas valve opening according to the current boiling degree, and control the gas valve opening of the cooktop to be the target gas valve opening, so as to adjust the heating power of the cooktop.

[0049] On the other hand, an electronic device is provided, including a processor and a memory, where the memory is used to store instructions executable by the processor; wherein, the processor is configured to execute the instructions to implement the method for adjusting the heating power of the cooktop as described above.

[0050] On the other hand, a computer-readable storage medium is provided, where there is at least one instruction or at least one segment of program in the computer-readable storage medium, and the at least one instruction or at least one segment of program is loaded and executed by a processor to implement the method for adjusting the heating power of the cooktop as described above.

[0051] The method and device for adjusting the heating power of the cooktop provided by this application have the following technical effects:

[0052] When the target cookware is heated on the cooktop in this application, the current vibration signal of the target cookware is acquired; the current vibration signal is analyzed and processed to obtain the current power spectral density and the current amplitude peak corresponding to the current vibration signal; a preset power spectral density range that matches the current power spectral density is searched in the preset vibration signal database to obtain a first search result, and a preset amplitude peak range that matches the current amplitude peak is searched to obtain a second search result; the current boiling degree of the liquid in the target cookware is determined according to the first search result and the second search result; the preset vibration signal database includes the corresponding relationships between multiple preset boiling degrees, multiple preset power spectral density ranges, and multiple preset amplitude peak ranges; a corresponding target gas valve opening is determined according to the current boiling degree, and the gas valve opening of the cooktop is controlled to be the target gas valve opening to adjust the heating power of the cooktop. This application can determine the boiling degree of the liquid in the cookware through the vibration signal of the cookware, so as to automatically adjust the heating power of the cooktop, and avoid poor cooking effects and safety hazards caused by splashing of the liquid in the cookware.

[0053] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit this application. Description of the Drawings

[0054] To more clearly illustrate the technical solutions and advantages in the embodiments of this specification or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0055] Figure 1 is a schematic flowchart of a method for adjusting the heating power of a cooker provided by an embodiment of this specification;

[0056] Figure 2 is a schematic flowchart of a method for obtaining the current power spectral density and the current amplitude peak value provided by an embodiment of this specification;

[0057] Figure 3 is a schematic flowchart of a method for constructing a preset vibration signal database provided by an embodiment of this specification;

[0058] Figure 4 is a schematic flowchart of a method for obtaining a vibration signal under a preset boiling degree provided by an embodiment of this specification;

[0059] Figure 5 is a schematic flowchart of a method for adjusting the heating power of a cooker according to the opening degree of a target gas valve provided by an embodiment of this specification;

[0060] Figure 6 is a schematic flowchart of a dry-burning protection method for a cooker provided by an embodiment of this specification;

[0061] Figure 7 is a schematic diagram of a device for adjusting the heating power of a cooker provided by an embodiment of this specification;

[0062] Figure 8 is a schematic diagram of the structure of a server for a method for adjusting the heating power of a cooker provided by an embodiment of this specification. Detailed implementation manners

[0063] The following will clearly and completely describe the technical solutions in the embodiments of this specification in conjunction with the accompanying drawings in the embodiments of this specification. Obviously, the described embodiments are only some embodiments of this application, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts belong to the scope of protection of this application.

[0064] It should be noted that the terms "first", "second", etc. in the specification, claims and above-mentioned drawings of this application are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or server that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0065] The following introduces a method for adjusting the firepower of a cooker in this application. Figure 1 It is a schematic flowchart of a method for adjusting the firepower of a cooker provided by an embodiment of this specification. This specification provides the method operation steps as described in the embodiment or flowchart, but based on routine or non-creative labor, it may include more or fewer operation steps. The order of steps listed in the embodiment is only one way among the execution orders of numerous steps, and does not represent the only execution order. When the actual system or server product executes, it can be executed in the order of the method shown in the embodiment or the drawing, or executed in parallel (for example, in an environment of parallel processors or multi-threaded processing). Specifically, as Figure 1 shown, the method may include:

[0066] S1: When heating a target cookware on the cooker, obtain the current vibration signal of the target cookware;

[0067] S2: Analyze and process the current vibration signal to obtain the current power spectral density and the current amplitude peak value corresponding to the current vibration signal;

[0068] S3: In a preset vibration signal database, search for a preset power spectral density range that matches the current power spectral density to obtain a first search result, and search for a preset amplitude peak range that matches the current amplitude peak value to obtain a second search result;

[0069] S4: According to the first search result and the second search result, determine the current boiling degree of the liquid in the target cookware; the preset vibration signal database includes the corresponding relationships between multiple preset boiling degrees, multiple preset power spectral density ranges, and multiple preset amplitude peak ranges;

[0070] S5: Determine the corresponding target gas valve opening according to the current boiling degree, and control the gas valve opening of the cooker to be the target gas valve opening to adjust the firepower of the cooker.

[0071] In an embodiment of the present application, a vibration detection module (such as an acceleration sensor, a piezoelectric sensor, etc.) can be provided on the cookware, and the vibration signal of the cookware can be collected through the vibration detection module. Among them, the vibration detection module can be installed on the side wall of the cookware body or the cookware lid to collect the vibration signal of the cookware body or the cookware lid to reflect the boiling degree of the liquid in the cookware during the cooking process (such as static heating, approaching boiling, continuous boiling).

[0072] In an embodiment of the present application, when the cookware is heated on the cooker, the vibration signal of the cookware can be obtained through the vibration detection module provided on the cookware, the obtained vibration signal can be subjected to spectrum analysis, and the characteristic parameters (such as power spectral density and amplitude peak value) in the vibration signal can be extracted, so as to obtain the current power spectral density and the current amplitude peak value corresponding to the current vibration signal. Search for the preset power spectral density range matching the current power spectral density in the preset vibration signal database to obtain the first search result, that is, the power spectral density range matching the current power spectral density, and search for the preset amplitude peak value range matching the current amplitude peak value to obtain the second search result, that is, the amplitude peak value range matching the current amplitude peak value, and combine the first search result and the second search result to jointly determine the current boiling degree of the liquid in the cookware. The preset vibration signal database includes the corresponding relationships between multiple preset boiling degrees and multiple preset power spectral density ranges and multiple preset amplitude peak value ranges.

[0073] In an embodiment of the present application, it can be distinguished according to the different states of the liquid in the cookware, which can be divided into a static heating state, an approaching boiling state, and a continuous boiling state. Thus, three preset boiling degrees can be corresponding, and each boiling degree is provided with a corresponding power spectral density range and amplitude peak value range. For example, if the current power spectral density of the cookware is E and the current amplitude peak value is A, the preset boiling degrees can include static, approaching boiling, and continuous boiling. If the liquid in the cookware is static, that is, the liquid in the cookware is still in the initial heating stage and has not boiled yet, the corresponding power spectral density range can be E < E1, and the corresponding amplitude peak value range can be A < A1, and the cookware can be heated with high heat; if the boiling degree of the liquid in the cookware is approaching boiling, that is, the liquid in the cookware is about to boil, the corresponding power spectral density range can be E1 ≤ E ≤ E2, and the corresponding amplitude peak value range can be A1 ≤ A ≤ A2, and the cookware can be heated with medium heat; if the boiling degree of the liquid in the cookware is continuous boiling, that is, the liquid in the cookware has been in a state of continuous violent boiling, the corresponding power spectral density range can be E > E2, and the corresponding amplitude peak value range can be A > A2, and the cookware can be heated with low heat. Among them, E1 is the first power spectral density threshold, E2 is the second power spectral density threshold, A1 is the first amplitude peak value threshold, and A2 is the second amplitude peak value threshold, which can be determined by obtaining a large amount of vibration signal information of the preset cookware under different boiling degrees.

[0074] In an embodiment of the present application, after determining the current boiling degree of the liquid in the cookware, the corresponding target gas valve opening can be determined according to the boiling degree. The higher the boiling degree, the smaller the corresponding gas valve opening. Then, control the gas valve opening of the cooktop to the target gas valve opening to heat the cookware, thereby adjusting the firepower of the cooktop.

[0075] In an exemplary embodiment, as Figure 2 shown, the analysis and processing of the current vibration signal to obtain the current power spectral density and the current amplitude peak corresponding to the current vibration signal may include:

[0076] S21: Perform filtering processing on the current vibration signal to remove the noise in the current vibration signal and obtain a filtered vibration signal;

[0077] S22: Extract the filtered vibration signal to obtain the current power spectral density and the current amplitude peak.

[0078] In an embodiment of the present application, for the collected vibration signal, it is necessary to first perform low-pass filtering to remove invalid signals to obtain a clean vibration signal, and then perform extraction to obtain the current power spectral density and the current amplitude peak.

[0079] In an exemplary embodiment, the specific extraction method may include:

[0080] Extract the filtered vibration signal to obtain the current amplitude peak;

[0081] Perform conversion processing on the filtered vibration signal to obtain the frequency domain information of the filtered vibration signal;

[0082] Extract the frequency domain signal to obtain the current power spectral density value.

[0083] In an embodiment of the present application, a low-pass filter can be used to remove environmental noise to obtain a filtered vibration signal. By extracting the filtered vibration signal, the maximum and minimum values of the amplitude can be extracted. Perform spectral analysis on the filtered vibration signal, that is, convert the time-domain vibration signal into frequency domain information to show its frequency components and energy distribution. In this way, the energy of the main frequency band can be extracted. The time-frequency conversion formula is as follows:

[0084]

[0085] In the formula, X(f) is the frequency domain signal, which is a function of the angular frequency f and describes the frequency composition of the signal; x(t) represents the time-domain signal, which is a function of time t and describes the change of the signal over time; j is the imaginary unit, satisfying j 2=-1, used to represent a complex number; e -j2πft is a complex exponential function, used to decompose a time-domain signal into complex exponential components of different frequencies.

[0086] The main frequency band energy refers to the frequency range with the largest energy in the vibration signal, which can be measured by the Power Spectral Density (PSD). The power spectral density is a statistic that describes the distribution of signal power in the frequency domain. The power spectral density formula is as follows:

[0087]

[0088] In the formula, E(f) is the power spectral density, and T is the duration of the vibration signal stage / total duration.

[0089] In the embodiments of the present application, by filtering and then extracting the collected vibration signal to eliminate the influence of environmental noise, a clean vibration signal can be obtained, so as to obtain a more accurate power spectral density and amplitude peak, and more accurately determine the current boiling degree of the liquid in the cookware.

[0090] In an exemplary embodiment, as Figure 3 described, the method may further include:

[0091] S31: When heating a preset cookware on the cooker, obtain the vibration signals of the liquid in the preset cookware at multiple preset boiling degrees; collect multiple vibration signals for each preset boiling degree;

[0092] S32: Analyze and process the multiple vibration signals at each preset boiling degree to obtain multiple power spectral densities and multiple amplitude peaks;

[0093] S33: Determine the preset power spectral density range corresponding to each preset boiling degree according to the multiple power spectral densities;

[0094] S34: Determine the preset amplitude peak range corresponding to each preset boiling degree according to the multiple amplitude peaks;

[0095] S35: Construct the preset vibration signal database according to the preset power spectral density range and preset amplitude peak range corresponding to each preset boiling degree.

[0096] In an embodiment of the present application, a preset vibration signal database can be pre-constructed so that when the cookware is in use, the boiling degree of the liquid in the cookware can be quickly determined based on the collected vibration signals. Heat a preset cookware on a stove, and obtain the vibration signals of the liquid in the preset cookware at multiple preset boiling degrees. A large number of vibration signals are collected for each preset boiling degree to obtain a more accurate relationship between the preset boiling degree and the vibration signals. Analyze and process the multiple vibration signals at each preset boiling degree to obtain multiple power spectral densities and multiple amplitude peaks. According to the multiple power spectral densities, determine the preset power spectral density range corresponding to each preset boiling degree, and according to the multiple amplitude peaks, determine the preset amplitude peak range corresponding to each preset boiling degree. Construct a preset vibration signal database based on the preset power spectral density range and the preset amplitude peak range corresponding to each preset boiling degree. For example, if three preset boiling degrees are set, namely the first preset boiling degree, the second preset boiling degree, and the third preset boiling degree, where the first preset boiling degree indicates that the liquid in the cookware is still in the initial static heating state and has not boiled yet; the second preset boiling degree indicates that the liquid in the cookware is in the state of about to boil and is already close to boiling; the third preset boiling state indicates that the liquid in the cookware is already in the boiling state and has continued to boil violently. After analyzing and processing a large amount of data, the preset power spectral density range and the preset amplitude peak range corresponding to each preset boiling degree can be determined. If it is the first preset boiling degree, the corresponding power spectral density range can be E < E1, and the corresponding amplitude peak range can be A < A1, and the cookware can be heated with high heat; if it is the second preset boiling degree, the corresponding power spectral density range can be E1 ≤ E ≤ E2, and the corresponding amplitude peak range can be A1 ≤ A ≤ A2, and the cookware can be heated with medium heat; if it is the third preset boiling degree, the corresponding power spectral density range can be E > E2, and the corresponding amplitude peak range can be A > A2, and the cookware can be heated with low heat. In addition, more preset boiling degrees can also be set to obtain a more accurate boiling state of the liquid in the cookware.

[0097] By pre-constructing a preset vibration signal database in an embodiment of the present application, the boiling degree of the liquid in the cookware can be quickly and accurately determined based on the collected vibration signals of the cookware, improving the adjustment efficiency and adjustment accuracy, and performing real-time control on the firepower.

[0098] In an exemplary embodiment, as Figure 4 shown, when heating the preset cookware on the stove, obtaining the vibration signals of the liquid in the preset cookware at multiple preset boiling degrees may include:

[0099] S311: When the preset cookware is heated on the stove, obtain the temperature of the liquid in the preset cookware;

[0100] S312: Determine a preset boiling degree corresponding to the liquid in the preset cookware according to the temperature of the liquid in the preset cookware and a preset temperature threshold.

[0101] S313: Obtain vibration signals of the liquid in the preset cookware at multiple such preset boiling degrees.

[0102] In the embodiment of the present application, in the early stage, the temperature of the liquid in the preset cookware can be combined to determine the preset boiling degree corresponding to the liquid, so as to collect a large number of vibration signals at different preset boiling degrees. The corresponding preset temperature threshold can be set according to the boiling point of the liquid in the cookware, and the temperature of the liquid in the preset cookware is compared with the preset temperature threshold to determine the preset boiling degree corresponding to the liquid in the preset cookware.

[0103] In the embodiment of the present application, by setting the preset temperature threshold, it is possible to accurately judge the preset boiling degree corresponding to the liquid in the preset cookware, obtain a more accurate preset boiling degree, and improve the reliability and accuracy of the preset vibration signal database.

[0104] In an exemplary embodiment, the determining the preset boiling degree corresponding to the liquid in the preset cookware according to the temperature of the liquid in the preset cookware and a preset temperature threshold may include:

[0105] Determine a first preset temperature threshold and a second preset temperature threshold according to the boiling point of the liquid in the preset cookware; both the first preset temperature threshold and the second preset temperature threshold are less than the boiling point of the liquid in the preset cookware, and the difference between the first preset temperature threshold and the boiling point is greater than the difference between the second preset temperature threshold and the boiling point;

[0106] If the temperature of the liquid in the preset cookware is less than or equal to the first preset temperature threshold, determine that the preset boiling degree is a first preset boiling degree;

[0107] If the temperature of the liquid in the preset cookware is greater than the first preset temperature threshold and less than the second preset temperature threshold, determine that the preset boiling degree is a second preset boiling degree;

[0108] If the temperature of the liquid in the preset cookware is greater than or equal to the second preset temperature threshold, determine that the preset boiling degree is a third preset boiling degree.

[0109] In the embodiments of the present application, the first preset temperature threshold and the second preset temperature threshold can be determined according to the boiling point of the liquid in the preset cookware. Both the first preset temperature threshold and the second preset temperature threshold are less than the boiling point of the liquid in the preset cookware, and the difference between the first preset temperature threshold and the boiling point is greater than the difference between the second preset temperature threshold and the boiling point. If the temperature of the liquid in the preset cookware is less than or equal to the first preset temperature threshold, the preset boiling degree can be determined as the first preset boiling degree; if the temperature of the liquid in the preset cookware is greater than the first preset temperature threshold and less than the second preset temperature threshold, the preset boiling degree can be determined as the second preset boiling degree; if the temperature of the liquid in the preset cookware is greater than or equal to the second preset temperature threshold, the preset boiling degree can be determined as the third preset boiling degree. Taking water as an example, the first preset temperature threshold can be set to 95 °C, and the second preset temperature threshold can be set to 99 °C. If the temperature of the liquid in the preset cookware is less than or equal to 95 °C, it indicates that the water in the preset cookware is still in the stage of static heating and has not boiled, that is, the boiling degree is the first preset boiling degree; if the temperature of the liquid in the preset cookware is greater than 95 °C and less than 99 °C, it indicates that the water in the preset cookware is about to boil and is already in a state close to boiling, that is, the boiling degree is the second preset boiling degree; if the temperature of the liquid in the preset cookware is greater than or equal to 99 °C, it indicates that the water in the preset cookware has boiled and is in a state of continuous boiling, that is, the boiling degree is the third preset boiling degree.

[0110] In the embodiments of the present application, the preset temperature threshold can be set according to the boiling point of the liquid in the preset cookware to more accurately determine the boiling degree of the liquid in the preset cookware. A liquid detection module can be set to detect the liquid properties in the cookware to match the corresponding preset temperature threshold. The boiling point information of different liquids can be collected in advance, and the corresponding preset temperature thresholds can be set. According to the correspondence between the liquid type, boiling point, and the corresponding preset temperature thresholds, a preset temperature threshold database can be constructed. When the preset cookware is heated on the cooker, the liquid type in the cooker is determined through the liquid detection module, and the preset temperature threshold database is searched to determine the corresponding boiling point and the corresponding preset temperature threshold. Among them, the liquid detection module can determine the type of the liquid in the preset cookware according to information such as the density, mass, and viscosity of the liquid.

[0111] The embodiments of the present application determine the corresponding preset temperature threshold according to the boiling point of the liquid in the preset cookware, and can quickly and accurately determine the boiling degree of the liquid in the preset cookware according to the temperature of the liquid in the cookware, effectively improving the accuracy.

[0112] In an exemplary embodiment, as Figure 5 shown, determining the target gas valve opening according to the current boiling degree and controlling the gas valve opening of the cooker to be the target gas valve opening to adjust the firepower of the cooker may include:

[0113] S51: Search in the preset gas valve opening database for the gas valve opening that matches the current boiling degree to obtain the target gas valve opening; the preset gas valve opening database includes the corresponding relationships between multiple preset boiling degrees and multiple preset gas valve openings; the preset boiling degree and the preset gas valve opening are negatively correlated;

[0114] S52: Control the gas valve opening of the cooker to be the target gas valve opening to adjust the firepower of the cooker.

[0115] In an embodiment of the present application, after determining the current boiling degree of the liquid in the cookware, search in the preset gas valve opening database for the gas valve opening that matches the current boiling degree to obtain the target gas valve opening, and control the gas valve opening of the cooker to be the target gas valve opening, thereby adjusting the firepower of the cooker. Among them, the preset gas valve opening database includes the corresponding relationships between multiple preset boiling degrees and multiple preset gas valve openings, and the preset boiling degree and the preset gas valve opening are negatively correlated, that is, the greater the boiling degree, the smaller the corresponding gas valve opening. For example, if the current boiling degree is the first preset boiling degree, the corresponding preset gas valve opening can be the first preset opening, that is, the largest valve opening, to use high fire to heat the cookware and make the liquid in the cookware boil quickly; if the current boiling degree is the second preset boiling degree, the corresponding preset gas valve opening can be the second preset opening, that is, a moderate valve opening, to use medium fire to heat the cookware; if the current boiling degree is the third preset boiling degree, the corresponding preset gas valve opening can be the second preset opening, that is, the smallest valve opening, to use low fire to heat the cookware, avoiding the liquid in the cookware from boiling violently continuously under high fire, resulting in liquid overflow, soiling the cooker, and even causing potential safety hazards. In addition, more gears can also be set for the valve opening in the present application for more accurate firepower adjustment.

[0116] The embodiment of the present application can obtain the target gas valve opening more quickly and accurately by searching the preset gas valve opening database, so as to realize the adaptive adjustment of the firepower of the cooker, improve the accuracy and efficiency of firepower adjustment, ensure that the cooker heats the cookware with appropriate firepower, guarantee the cooking effect, and at the same time, can reasonably utilize energy and avoid energy waste.

[0117] In an exemplary embodiment, the method may further include:

[0118] Obtain the vibration signal of the preset cookware in the dry-burn state;

[0119] Determine the warning amplitude peak value of the preset cookware according to the vibration signal in the dry-burn state;

[0120] When it is detected that the current amplitude peak is consistent with the warning amplitude peak, close the gas valve of the cooking appliance.

[0121] In an embodiment of the present application, a method for protecting a cookware from dry burning is further provided. A vibration signal of a preset cookware in a dry burning state is acquired, and thus a warning amplitude peak of the preset cookware is determined. When it is detected that the current amplitude peak is consistent with the warning amplitude peak, it indicates that the liquid in the cookware will be dried up. In order to prevent the liquid in the cookware from being dried up and causing a safety accident, the gas valve of the cooking appliance is immediately closed.

[0122] By setting a warning amplitude peak in the embodiment of the present application, a dry burning protection function can be provided to prevent the liquid in the cookware from continuously boiling and being dried up, thereby causing a safety accident, effectively improving the safety of using the cooking appliance.

[0123] In an exemplary embodiment, as Figure 6 shown, after determining a corresponding target gas valve opening according to the current boiling degree and controlling the gas valve opening of the cooking appliance to be the target gas valve opening to adjust the heating power of the cooking appliance, the method may include:

[0124] S61: When it is detected that the target gas valve opening is a preset gas valve opening threshold value, acquire the current liquid level of the liquid in the target cookware; the preset gas valve opening threshold value is smaller than any of the preset gas valve openings in the preset gas valve opening database other than the preset gas valve opening threshold value;

[0125] S62: Search in a preset dry burning duration database for a dry burning duration that matches the current liquid level to obtain a target dry burning duration; the preset dry burning duration database includes the corresponding relationship between the liquid level and the dry burning duration;

[0126] S63: When it is detected that the duration for which the gas valve of the cooking appliance maintains the preset gas valve opening threshold value reaches the target dry burning duration, close the gas valve of the cooking appliance.

[0127] In an embodiment of the present application, another method for protecting a cookware from dry burning is provided. When it is detected that the opening degree of the target gas valve has reached the minimum opening degree, that is, when the liquid in the cookware has been boiling continuously, the current liquid level of the liquid in the target cookware is obtained. The dry-burning duration corresponding to the current liquid level is searched in a preset dry-burning duration database to obtain the target dry-burning duration. Once it is detected that the duration for which the gas valve of the cooktop remains at the minimum opening degree reaches the target dry-burning duration, the gas valve of the cooktop needs to be immediately closed to prevent the liquid from burning dry while the cookware is still in the continuous heating stage, thereby avoiding the occurrence of safety accidents. Among them, the preset dry-burning duration database stores the corresponding relationship between the liquid level and the dry-burning duration, that is, different liquid levels correspond to a dry-burning duration, indicating the duration required for the liquid at this liquid level to reach the dry-burning state when the gas valve is at the minimum opening degree (i.e., the aforementioned third preset opening degree).

[0128] The embodiment of the present application provides another method for protecting a cookware from dry burning, which can determine the duration required for the liquid at a certain liquid level to burn dry through the liquid level of the liquid in the cookware, and timely close the gas valve of the cooktop, providing double dry-burning protection, and further improving the use safety and reliability of the cooktop.

[0129] In an exemplary embodiment, the method may further include:

[0130] When the opening degree of the gas valve of the preset cookware is the preset gas valve opening degree threshold, obtain the durations corresponding to the dry-burning states of the preset cookware at multiple liquid levels, and obtain the corresponding relationship between the liquid level and the dry-burning duration;

[0131] According to the corresponding relationship between the liquid level and the dry-burning duration, obtain the preset dry-burning duration database.

[0132] In an embodiment of the present application, the efficiency of adjusting the firepower of the cooktop can be improved by pre-constructing a preset dry-burning duration database. When the cooktop heats the preset cookware at the opening degree of the minimum gear (i.e., the third preset opening degree), obtain the durations corresponding to the dry-burning states of the preset cookware at multiple different liquid levels, and obtain the corresponding relationship between the liquid level and the dry-burning duration, thereby constructing the preset dry-burning duration database, so that when the liquid in the cookware is in the boiling state, even at different liquid levels, the corresponding dry-burning duration can be quickly and accurately obtained, providing a dry-burning protection function for the cooktop.

[0133] The embodiment of the present application provides a dry-burning protection function for the cooktop by pre-constructing a preset dry-burning duration database, and effectively improves the efficiency and accuracy of adjusting the firepower of the cooktop.

[0134] The embodiments of the present application can accurately and adaptively adjust the firepower of the cooking appliance by detecting the vibration signal of the cookware and according to the boiling degree of the liquid in the cookware, effectively avoiding the lid being continuously lifted by steam due to the continuous boiling of the liquid in the cookware and preventing accidents; when the liquid in the cookware is in a state of continuous boiling, by reducing the opening degree of the gas valve and heating the cookware with a small fire, it is avoided that the liquid in the cookware continuously boils and splashes onto the stove top or onto the user, effectively reducing the risk of dirt on the stove top and reducing the probability of the user being scalded; through the dry burning protection function, it can effectively avoid the liquid in the cookware being continuously boiled and burned dry, thus causing safety accidents, effectively ensuring the safety of using the cooking appliance; in addition, it can adjust the appropriate opening degree of the gas valve to heat the cookware according to different boiling states of the liquid in the cookware, which can save energy while ensuring the cooking effect and avoid energy waste.

[0135] The embodiments of the present specification also provide a firepower adjustment device for a cooking appliance, as Figure 7 shown, the device may include:

[0136] A signal acquisition module 710, configured to acquire the current vibration signal of the target cookware when heating the target cookware on the cooking appliance;

[0137] An analysis module 720, configured to analyze and process the current vibration signal to obtain the current power spectral density and the current amplitude peak value corresponding to the current vibration signal;

[0138] A search module 730, configured to search for a preset power spectral density range matching the current power spectral density in a preset vibration signal database to obtain a first search result, and search for a preset amplitude peak value range matching the current amplitude peak value to obtain a second search result;

[0139] A determination module 740, configured to determine the current boiling degree of the liquid in the target cookware according to the first search result and the second search result; the preset vibration signal database includes the corresponding relationships between multiple preset boiling degrees and multiple preset power spectral density ranges and multiple preset amplitude peak value ranges;

[0140] A control module 750, configured to determine the corresponding target gas valve opening degree according to the current boiling degree and control the gas valve opening degree of the cooking appliance to be the target gas valve opening degree so as to adjust the firepower of the cooking appliance.

[0141] In an exemplary embodiment, the signal acquisition module 710 may include:

[0142] A filtering unit, configured to perform filtering processing on the current vibration signal to remove the noise in the current vibration signal and obtain a filtered vibration signal;

[0143] An extraction unit, configured to extract the filtered vibration signal to obtain the current power spectral density and the current amplitude peak value.

[0144] In an exemplary embodiment, the apparatus may further include:

[0145] A preset acquisition module, configured to acquire vibration signals of the liquid in the preset cookware at multiple preset boiling degrees when heating the preset cookware on the stove; multiple vibration signals are collected for each of the preset boiling degrees;

[0146] A preset analysis module, configured to analyze and process the multiple vibration signals at each of the preset boiling degrees to obtain multiple power spectral densities and multiple amplitude peak values;

[0147] A first preset determination module, configured to determine a preset power spectral density range corresponding to each of the preset boiling degrees according to the multiple power spectral densities;

[0148] A second preset determination module, configured to determine a preset amplitude peak value range corresponding to each of the preset boiling degrees according to the multiple amplitude peak values;

[0149] A preset construction module, configured to construct the preset vibration signal database according to the preset power spectral density ranges and the preset amplitude peak value ranges corresponding to the respective preset boiling degrees.

[0150] In an exemplary embodiment, the preset acquisition module may include:

[0151] A temperature acquisition unit, configured to acquire the temperature of the liquid in the preset cookware when the preset cookware is heated on the stove;

[0152] A preset boiling degree determination unit, configured to determine the preset boiling degree corresponding to the liquid in the preset cookware according to the temperature of the liquid in the preset cookware and a preset temperature threshold;

[0153] A vibration signal acquisition unit, configured to acquire vibration signals of the liquid in the preset cookware at multiple preset boiling degrees.

[0154] In an exemplary embodiment, the preset boiling degree determination unit may include:

[0155] A preset temperature threshold determination subunit, configured to determine a first preset temperature threshold and a second preset temperature threshold according to the boiling point of the liquid in the preset cookware; both the first preset temperature threshold and the second preset temperature threshold are less than the boiling point of the liquid in the preset cookware, and the difference between the first preset temperature threshold and the boiling point is greater than the difference between the second preset temperature threshold and the boiling point;

[0156] A first determination subunit, configured to determine that the preset boiling degree is a first preset boiling degree if the temperature of the liquid in the preset cookware is less than or equal to the first preset temperature threshold.

[0157] A second determination subunit, configured to determine that the preset boiling degree is a second preset boiling degree if the temperature of the liquid in the preset cookware is greater than the first preset temperature threshold and less than the second preset temperature threshold.

[0158] A third determination subunit, configured to determine that the preset boiling degree is a third preset boiling degree if the temperature of the liquid in the preset cookware is greater than or equal to the second preset temperature threshold.

[0159] In an exemplary embodiment, the control module 750 may include:

[0160] A target gas valve opening determination unit, configured to search for a gas valve opening that matches the current boiling degree in a preset gas valve opening database to obtain a target gas valve opening; the preset gas valve opening database includes correspondences between multiple preset boiling degrees and multiple preset gas valve openings; the preset boiling degree and the preset gas valve opening are negatively correlated.

[0161] A control unit, configured to control the gas valve opening of the cooktop to be the target gas valve opening to adjust the heating power of the cooktop.

[0162] In an exemplary embodiment, the device may further include:

[0163] A signal acquisition module, configured to acquire a vibration signal of the preset cookware in a dry-burn state.

[0164] An early warning amplitude peak determination module, configured to determine an early warning amplitude peak of the preset cookware according to the vibration signal in the dry-burn state.

[0165] A closing module, configured to close the gas valve of the cooktop when it is detected that the current amplitude peak is consistent with the early warning amplitude peak.

[0166] In an exemplary embodiment, the device may further include:

[0167] A current liquid level acquisition module, configured to acquire the current liquid level of the liquid in the target cookware when it is detected that the target gas valve opening is a preset gas valve opening threshold; the preset gas valve opening threshold is less than any of the preset gas valve openings in the preset gas valve opening database other than the preset gas valve opening threshold.

[0168] A target dry - out duration acquisition module, configured to search for a dry - out duration that matches the current liquid level in a preset dry - out duration database to obtain a target dry - out duration; the preset dry - out duration database includes the correspondence between the liquid level and the dry - out duration;

[0169] A detection module, configured to close the gas valve of the cooktop when it is detected that the duration for which the gas valve of the cooktop maintains the preset gas valve opening threshold reaches the target dry - out duration.

[0170] In an exemplary embodiment, the apparatus may further include:

[0171] A correspondence acquisition module, configured to obtain the durations corresponding to the dry - out states of the preset cookware at multiple liquid levels when the gas valve opening of the preset cookware is the preset gas valve opening threshold, so as to obtain the correspondence between the liquid level and the dry - out duration;

[0172] A preset dry - out duration database construction module, configured to obtain the preset dry - out duration database according to the correspondence between the liquid level and the dry - out duration.

[0173] The apparatus in the apparatus embodiment described above and the method embodiment are based on the same inventive concept.

[0174] An embodiment of this specification provides an electronic device, which includes a processor and a memory. At least one instruction or at least one segment of program is stored in the memory, and the at least one instruction or at least one segment of program is loaded and executed by the processor to implement the method for adjusting the firepower of the cooktop provided in the above - mentioned method embodiment.

[0175] An embodiment of this application further provides a computer - readable storage medium, which can be arranged in a terminal to store at least one instruction or at least one segment of program related to implementing the method for adjusting the firepower of the cooktop in the method embodiment. The at least one instruction or at least one segment of program is loaded and executed by the processor to implement the method for adjusting the firepower of the cooktop provided in the above - mentioned method embodiment.

[0176] An embodiment of this application further provides a computer program product or a computer program, which includes computer instructions stored in a computer - readable storage medium. The processor of the computer device reads the computer instructions from the computer - readable storage medium, and the processor executes the computer instructions, so that the computer device executes to implement the method for adjusting the firepower of the cooktop provided in the above - mentioned method embodiment.

[0177] Optionally, in the embodiments of this specification, the storage medium may be located in at least one of multiple network servers in a computer network. Optionally, in this embodiment, the above storage medium may include, but is not limited to: various media that can store program codes such as USB flash drives, read-only memories (ROMs), random access memories (RAMs), mobile hard disks, magnetic disks, or optical discs.

[0178] The memory in the embodiments of this specification can be used to store software programs and modules. The processor executes various functional applications and data processing by running the software programs and modules stored in the memory. The memory mainly includes a program storage area and a data storage area. Among them, the program storage area can store an operating system, application programs required for functions, etc.; the data storage area can store data created according to the use of the device, etc. In addition, the memory may include a high-speed random access memory and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices. Correspondingly, the memory may further include a memory controller to provide the processor with access to the memory.

[0179] The method embodiment for adjusting the cooking power of the cooking appliance provided in the embodiments of this specification can be executed on a mobile terminal, a computer terminal, a server, or a similar computing device. Taking running on a server as an example, Figure 8 is the hardware structure block diagram of a server for the method of adjusting the cooking power of a cooking appliance provided in the embodiments of this specification. As Figure 8As shown, the server 800 can vary significantly depending on configuration or performance, and may include one or more central processing units (CPUs) 810 (the central processing unit 810 may include, but is not limited to, processing devices such as a microprocessor MCU or a field programmable gate array FPGA), a memory 830 for storing data, and one or more storage media 820 for storing application programs 823 or data 822 (such as one or more mass storage devices). Among them, the memory 830 and the storage media 820 can be transient storage or persistent storage. The program stored in the storage media 820 may include one or more modules, and each module may include a series of instruction operations on the server. Further, the central processing unit 810 may be configured to communicate with the storage media 820 and execute a series of instruction operations in the storage media 820 on the server 800. The server 800 may also include one or more power supplies 860, one or more wired or wireless network interfaces 850, one or more input / output interfaces 840, and / or one or more operating systems 821, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, and so on.

[0180] The input / output interface 840 can be used to receive or send data via a network. Specific examples of the above network may include a wireless network provided by the communication provider of the server 800. In one example, the input / output interface 840 includes a network interface controller (NIC), which can be connected to other network devices through a base station and thus communicate with the Internet. In one example, the input / output interface 840 can be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0181] Those of ordinary skill in the art can understand that Figure 8 the structure shown is only illustrative and does not limit the structure of the above electronic device. For example, the server 800 may also include more or fewer components than Figure 8 shown therein, or have a different configuration from Figure 8 that shown.

[0182] As can be seen from the embodiments of the method and device for adjusting the heating power of the cooking appliance provided by the present application above, when the present application heats a target cooking pot on the cooking appliance, the current vibration signal of the target cooking pot is acquired; the current vibration signal is analyzed and processed to obtain the current power spectral density and the current amplitude peak value corresponding to the current vibration signal; a preset power spectral density range matching the current power spectral density is searched in a preset vibration signal database to obtain a first search result, and a preset amplitude peak value range matching the current amplitude peak value is searched to obtain a second search result; according to the first search result and the second search result, the current boiling degree of the liquid in the target cooking pot is determined; the preset vibration signal database includes the corresponding relationships between multiple preset boiling degrees and multiple preset power spectral density ranges and multiple preset amplitude peak value ranges; according to the current boiling degree, the corresponding target gas valve opening degree is determined, and the gas valve opening degree of the cooking appliance is controlled to be the target gas valve opening degree so as to adjust the heating power of the cooking appliance. The present application can accurately and adaptively adjust the heating power of the cooking appliance according to the boiling degree of the liquid in the cooking pot by detecting the vibration signal of the cooking pot, effectively avoiding the lid of the cooking pot being continuously lifted by steam due to the continuous boiling of the liquid in the cooking pot and preventing accidents; when the liquid in the cooking pot is in a state of continuous boiling, the gas valve opening degree is adjusted to a small value to heat the cooking pot with a small fire, avoiding the liquid in the cooking pot from continuously boiling and splashing onto the stove top or onto the user, effectively reducing the risk of soiling of the stove top and reducing the probability of the user being scalded; through the dry burning protection function, it can effectively avoid the liquid in the cooking pot from being burned dry due to continuous boiling, thereby causing a safety accident and effectively ensuring the use safety of the cooking appliance; in addition, it can adjust the appropriate gas valve opening degree to heat the cooking pot according to different boiling states of the liquid in the cooking pot, which can save energy while ensuring the cooking effect and avoid energy waste.

[0183] It should be noted that: the above sequence of the embodiments of this specification is only for description and does not represent the superiority or inferiority of the embodiments. And the above specific embodiments of this specification have been described. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be executed in a different order from that in the embodiments and still achieve the desired results. Additionally, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0184] Each embodiment in this specification is described in a progressive manner, and the same or similar parts among the embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments. In particular, for the embodiments of the device, equipment, and storage medium, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can refer to the partial description of the method embodiments.

[0185] Those of ordinary skill in the art can understand that all or part of the steps of implementing the above embodiments can be completed by hardware, or can be completed by instructing related hardware through a program. The program can be stored in a computer storage medium. The above-mentioned storage medium can be a read-only memory, a disk, an optical disc, etc.

[0186] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for adjusting the heating power of a cooking appliance, characterized in that, The method includes: When heating a target cookware on the cooker, acquiring a current vibration signal of the target cookware; Analyzing and processing the current vibration signal to obtain a current power spectral density and a current amplitude peak value corresponding to the current vibration signal; Searching in a preset vibration signal database for a preset power spectral density range matching the current power spectral density to obtain a first search result, and searching for a preset amplitude peak value range matching the current amplitude peak value to obtain a second search result; Determining a current boiling degree of the liquid in the target cookware according to the first search result and the second search result; the preset vibration signal database includes correspondences between multiple preset boiling degrees and multiple preset power spectral density ranges and multiple preset amplitude peak value ranges; Determining a corresponding target gas valve opening according to the current boiling degree, and controlling the gas valve opening of the cooker to be the target gas valve opening to adjust the heating power of the cooker.

2. The method according to claim 1, characterized in that, The method further includes: When heating a preset cookware on the cooker, acquiring vibration signals of the liquid in the preset cookware at multiple preset boiling degrees; multiple vibration signals are collected for each preset boiling degree; Analyzing and processing the multiple vibration signals at each preset boiling degree to obtain multiple power spectral densities and multiple amplitude peak values; Determining a preset power spectral density range corresponding to each preset boiling degree according to the multiple power spectral densities; Determining a preset amplitude peak value range corresponding to each preset boiling degree according to the multiple amplitude peak values; Constructing the preset vibration signal database according to the preset power spectral density ranges and preset amplitude peak value ranges corresponding to the respective preset boiling degrees.

3. The method according to claim 2, wherein The step of, when heating a preset cookware on the cooker, acquiring vibration signals of the liquid in the preset cookware at multiple preset boiling degrees includes: When the preset cookware is heated on the cooker, acquiring the temperature of the liquid in the preset cookware; Determining a preset boiling degree corresponding to the liquid in the preset cookware according to the temperature of the liquid in the preset cookware and a preset temperature threshold; Acquiring vibration signals of the liquid in the preset cookware at multiple preset boiling degrees.

4. The method according to claim 3, wherein The step of determining a preset boiling degree corresponding to the liquid in the preset cookware according to the temperature of the liquid in the preset cookware and a preset temperature threshold includes: Determining a first preset temperature threshold and a second preset temperature threshold according to the boiling point of the liquid in the preset cookware; both the first preset temperature threshold and the second preset temperature threshold are less than the boiling point of the liquid in the preset cookware, and the difference between the first preset temperature threshold and the boiling point is greater than the difference between the second preset temperature threshold and the boiling point; If the temperature of the liquid in the preset cookware is less than or equal to the first preset temperature threshold, determining the preset boiling degree to be a first preset boiling degree; If the temperature of the liquid in the preset cookware is greater than the first preset temperature threshold and less than the second preset temperature threshold, determining the preset boiling degree to be a second preset boiling degree; If the temperature of the liquid in the preset cookware is greater than or equal to the second preset temperature threshold, determine that the preset boiling degree is the third preset boiling degree.

5. The method according to claim 1, characterized in that, The determining the target gas valve opening according to the current boiling degree and controlling the gas valve opening of the cooktop to be the target gas valve opening to adjust the heating power of the cooktop includes: Search for the gas valve opening that matches the current boiling degree in a preset gas valve opening database to obtain the target gas valve opening; the preset gas valve opening database includes the corresponding relationships between multiple preset boiling degrees and multiple preset gas valve openings; the preset boiling degree and the preset gas valve opening are negatively correlated; Control the gas valve opening of the cooktop to be the target gas valve opening to adjust the heating power of the cooktop.

6. The method according to claim 1, characterized in that The analyzing and processing the current vibration signal to obtain the current power spectral density and the current amplitude peak corresponding to the current vibration signal includes: Perform a filtering process on the current vibration signal to remove the noise in the current vibration signal to obtain a filtered vibration signal; Extract from the filtered vibration signal the current power spectral density and the current amplitude peak.

7. The method according to claim 1, wherein The method further includes: Obtain the vibration signal of the preset cookware in a dry-burn state; Determine the warning amplitude peak of the preset cookware according to the vibration signal in the dry-burn state; When it is detected that the current amplitude peak is consistent with the warning amplitude peak, close the gas valve of the cooktop.

8. The method according to claim 1, wherein After determining the corresponding target gas valve opening according to the current boiling degree and controlling the gas valve opening of the cooktop to be the target gas valve opening to adjust the heating power of the cooktop, the method includes: When it is detected that the target gas valve opening is the preset gas valve opening threshold, obtain the current liquid level of the liquid in the target cookware; the preset gas valve opening threshold is less than any of the preset gas valve openings in the preset gas valve opening database other than the preset gas valve opening threshold; Search for the dry-burn duration that matches the current liquid level in a preset dry-burn duration database to obtain the target dry-burn duration; the preset dry-burn duration database includes the corresponding relationship between the liquid level and the dry-burn duration; When it is detected that the duration for which the gas valve of the cooktop maintains the preset gas valve opening threshold reaches the target dry-burn duration, close the gas valve of the cooktop.

9. The method according to claim 8, wherein The method further includes: When the gas valve opening of the preset cookware is the preset gas valve opening threshold, obtain the durations corresponding to the dry-burn states of the preset cookware at multiple liquid levels to obtain the corresponding relationship between the liquid level and the dry-burn duration; Obtain the preset dry-burn duration database according to the corresponding relationship between the liquid level and the dry-burn duration.

10. A firepower adjustment device for a cooking appliance, characterized in that, The apparatus includes: A signal acquisition module, configured to obtain the current vibration signal of the target cookware when heating the target cookware on the cooktop; An analysis module for analyzing and processing the current vibration signal to obtain the current power spectral density and the current amplitude peak corresponding to the current vibration signal; A search module for searching in a preset vibration signal database for a preset power spectral density range that matches the current power spectral density to obtain a first search result, and for searching for a preset amplitude peak range that matches the current amplitude peak to obtain a second search result; A determination module for determining the current boiling degree of the liquid in the target cookware according to the first search result and the second search result; the preset vibration signal database includes the corresponding relationships between multiple preset boiling degrees and multiple preset power spectral density ranges and multiple preset amplitude peak ranges; A control module for determining a corresponding target gas valve opening degree according to the current boiling degree and controlling the gas valve opening degree of the cooktop to be the target gas valve opening degree so as to adjust the heating power of the cooktop.

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