Microwave heating control method and microwave equipment

Abstract

The invention provides a microwave heating control method and microwave equipment, and the method comprises the steps: monitoring the microwave absorptivity of a to-be-cooked dish at different frequencies in real time after the to-be-cooked dish starts to be cooked, adjusting the frequency and output power of a solid-state source according to the microwave absorptivity at different frequencies, and if a cooking end condition is satisfied, controlling the frequency and output power of the solid-state source to be higher than the frequency and output power of the solid-state source. If not, controlling the solid-state source to stop generating microwaves, adjusting the frequency and the output power of the solid-state source by monitoring the microwave absorptivity under different frequencies in real time, and cooking based on the frequency and the output power required by different food materials, so that uniform heating of the different food materials is realized, and an ideal cooking state is achieved at the same time.

Description

Technical Field

[0001] The present application relates to the field of microwave control technology, and in particular to a microwave heating control method and microwave equipment. Background Art

[0002] Heating food with microwaves is a common cooking method. Microwave equipment such as ovens, steamers, or all-in-one steam-bake machines can generate microwaves.

[0003] Users' demands for a culinary experience are evolving from basic functionality to high-quality, intelligent cooking experiences. They not only seek convenience but also desire to create delicious dishes using advanced kitchen appliances. In Chinese cooking, a dish often incorporates a variety of ingredients, aiming to combine meat and vegetables for a nutritionally balanced and flavorful experience. However, when using microwave cooking equipment, how to process multiple ingredients so that each reaches the desired cooking state simultaneously remains a pressing technical challenge. Summary of the Invention

[0004] The present application provides a microwave heating control method and a microwave device, which can be used to evenly heat different ingredients when cooking dishes containing multiple ingredients and achieve an ideal cooking state.

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

[0006] After the dish to be cooked begins to be cooked, real-time monitoring of the microwave absorptivity of the dish to be cooked at different frequencies;

[0007] Adjust the frequency and output power of the solid-state source according to the microwave absorption rate at different frequencies;

[0008] If the cooking end condition is met, the solid-state source is controlled to stop generating microwaves.

[0009] Optionally, real-time monitoring of the microwave absorptivity of the dish to be cooked at different frequencies includes:

[0010] Controlling the solid-state source to perform frequency sweeping radiation toward the cavity through the radiation component; the frequency sweeping radiation means sequentially emitting microwaves of different frequencies within a preset frequency range;

[0011] For any frequency, the reflected power received by the radiation component is obtained, and the microwave absorption rate at the frequency is determined based on the reflected power and the transmission power of the microwave corresponding to the frequency.

[0012] Optionally, adjust the frequency and output power of the solid-state source according to the microwave absorptivity at different frequencies, including:

[0013] According to the microwave absorption rate at different frequencies, the output power at each frequency when the solid-state source is swept and radiated to the cavity through the radiation component is adjusted.

[0014] Optionally, according to the microwave absorptivity at different frequencies, the output power of the solid-state source at each frequency when sweep-frequency radiating to the cavity through the radiation component is adjusted, including:

[0015] determining a target frequency according to microwave absorption rates at different frequencies; wherein the microwave absorption rate corresponding to the target frequency is greater than the microwave absorption rate corresponding to the non-target frequency;

[0016] According to the target frequency, the output power at each frequency when the solid-state source is swept-frequency radiated toward the cavity through the radiation component is adjusted.

[0017] Optionally, the target frequency is determined based on microwave absorptivity at different frequencies, including:

[0018] For any frequency, when the microwave absorptivity at the frequency is greater than a preset threshold, the frequency is determined to be the target frequency.

[0019] Optionally, the method further includes:

[0020] Determine the maximum value of the microwave absorptivity at different frequencies obtained this time;

[0021] The preset threshold is determined according to the maximum value and a preset ratio.

[0022] Optionally, adjusting the output power of the solid-state source at each frequency when sweep-frequency radiating to the cavity through the radiation component according to the target frequency includes:

[0023] Determining an output power corresponding to the target frequency and determining an output power corresponding to a non-target frequency; the output power corresponding to the target frequency is greater than the output power corresponding to the non-target frequency;

[0024] According to the output powers corresponding to the target frequency and the non-target frequency respectively, the solid-state source is controlled to sweep the radiation toward the cavity through the radiation component to heat the food to be cooked; the sweep radiation means that microwaves of different frequencies and corresponding output powers are emitted sequentially within a preset frequency range.

[0025] Optionally, the output powers corresponding to the target frequencies are the same; or, the output powers corresponding to the target frequencies are positively correlated with the microwave absorptivity corresponding to the target frequencies.

[0026] Optionally, the method further includes:

[0027] Acquiring an image of the dish to be cooked;

[0028] When it is determined according to the image that the dish to be cooked is cooked, it is determined that the cooking end condition is met.

[0029] In a second aspect, the present application provides a microwave device, comprising:

[0030] A controller, configured to execute the method according to any one of the first aspects;

[0031] a solid-state source for generating microwave signals of different frequencies and different output powers under the control of the controller;

[0032] a radiation component, configured to radiate corresponding microwaves into the cavity according to the microwave signal generated by the solid-state source;

[0033] A coaxial cable is used to connect the solid-state source and the radiation component.

[0034] The microwave heating control method and microwave device provided in the present application monitor the microwave absorptivity of the dish to be cooked at different frequencies in real time after the cooking starts, adjust the frequency and output power of the solid-state source according to the microwave absorptivity at different frequencies, and control the solid-state source to stop generating microwaves if the cooking end conditions are met. By monitoring the microwave absorptivity at different frequencies in real time to adjust the frequency and output power of the solid-state source, cooking is performed based on the frequency and output power required by different ingredients, thereby achieving uniform heating of different ingredients and achieving the ideal cooking state at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0036] Figure 1 A rear view of a microwave device provided in an embodiment of the present application;

[0037] Figure 2 A schematic diagram of the structure of an internal cavity of a microwave device provided in an embodiment of the present application;

[0038] Figure 3 A schematic flow chart of a microwave heating control method provided in an embodiment of the present application;

[0039] Figure 4 This is a schematic diagram of impedance analysis of a first food material provided in an embodiment of the present application;

[0040] Figure 5 This is a schematic diagram of impedance analysis of a second food material provided in an embodiment of the present application;

[0041] Figure 6 This is a schematic diagram of impedance analysis of a third food material provided in an embodiment of the present application;

[0042] Figure 7a A schematic diagram of microwave absorptivity at different frequencies in a first cycle provided by an embodiment of the present application;

[0043] Figure 7b A schematic diagram of assigning power to different frequencies in a first cycle provided by an embodiment of the present application;

[0044] Figure 7c A schematic diagram of microwave absorptivity at different frequencies in the 20th cycle provided in an embodiment of the present application;

[0045] Figure 7d A schematic diagram of assigning power to different frequencies in the 20th cycle provided in an embodiment of the present application;

[0046] Figure 7e A schematic diagram of microwave absorptivity at different frequencies at the 40th cycle provided in an embodiment of the present application;

[0047] Figure 7f A schematic diagram of assigning power to different frequencies in the 40th cycle provided by an embodiment of the present application;

[0048] Figure 8 A schematic flow chart of another microwave heating control method provided in an embodiment of the present application;

[0049] Figure 9 A schematic structural diagram of a microwave heating control device 90 provided in an embodiment of the present application;

[0050] Figure 10 A schematic diagram of the hardware structure of a controller 100 provided in an embodiment of the present application.

[0051] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0052] Exemplary embodiments are described in detail herein, with examples illustrated in the accompanying drawings. When the following description refers to the drawings, identical numerals in different drawings represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with this application.

[0053] In this document, it should be understood that the terms involved are only used to facilitate understanding and do not represent any limitation on the meaning. In addition, the number of any element in the drawings is for illustration and not limitation, and any naming is only for distinction and does not have any limiting meaning.

[0054] The data involved in this application may be data authorized by the user or fully authorized by all parties, and the collection, dissemination, and use of the data shall comply with the relevant national laws and regulations.

[0055] When cooking a dish, if the dish contains multiple ingredients, there is often a problem that one ingredient is already mature while another ingredient is not yet mature, that is, the multiple ingredients cannot reach the ideal cooking state at the same time.

[0056] Current cooking devices typically output a fixed power, or allow users to select an output power at the start of cooking and continue to operate at that output power. Therefore, when cooking dishes containing multiple ingredients, there is a problem that multiple ingredients cannot be cooked to the desired state at the same time.

[0057] Based on the above problems, the present application provides a microwave heating control method and microwave equipment, which can monitor the microwave absorption rate of dishes to be cooked at different frequencies in real time, and adjust the frequency and output power of the solid-state source according to the microwave absorption rate at different frequencies. Through fine output power control, multiple ingredients can be processed simultaneously, and various ingredients can be cooked to the ideal state at the same time as much as possible. This method can also improve the quality of cooked dishes, cooking efficiency, and enhance user experience.

[0058] like Figure 1 and Figure 2 As shown, the microwave device provided by the present application may include a solid-state source, a radiation component (such as an antenna), a coaxial cable, etc. The dishes to be cooked can be placed in the cavity of the cooking device. The number of radiation components may be one or two, and this application does not make specific restrictions. When there are two radiation components, each radiation component may correspond to an independently regulated microwave channel. The microwave signal emitted by the solid-state source is transmitted to the radiation component through a coaxial cable, and then the radiation component feeds the microwave into the cavity of the microwave device to heat the dishes to be cooked. Figure 2 As shown, the radiating component may include antenna A and antenna B, and antenna A and antenna B may be 915 MHz monopole antennas.

[0059] Optionally, the controller provided in this application may include a data acquisition module, a data calculation module, a data storage module, and a result feedback module. The data acquisition module is used to collect data for calculating microwave absorptivity; the data calculation module is used to analyze the collected data, such as calculating the magnitude of the microwave absorptivity, where a higher absorptivity of food reflects fewer microwaves, and vice versa; the data storage module is used to store the collected data and calculated intermediate data; and the result feedback module is used to feed back the calculated results and / or the determined output power of each frequency to the control system, which is used to control the solid-state source, thereby achieving closed-loop control.

[0060] Figure 3 This is a flow chart of a microwave heating control method provided in an embodiment of the present application. The method can be applied to a controller of a microwave device, and the method includes steps S301 to S303.

[0061] Step S301: After the dish to be cooked begins to be cooked, the microwave absorption rate of the dish to be cooked at different frequencies is monitored in real time.

[0062] Once the dish is cooked, its microwave absorptivity can be monitored in real time. This is achieved by continuously varying the frequency of the microwaves emitted into the cavity to capture microwave absorptivity at different frequencies. Microwave absorptivity refers to the ability of the dish to absorb microwave energy. Monitoring the microwave absorptivity of the dish actually involves measuring the microwave absorptivity of each ingredient, and different ingredients have varying absorptivity for the same frequency. For a given microwave frequency, the lower the impedance of an ingredient, the higher its absorptivity.

[0063] like Figure 4 、 Figure 5 and Figure 6 As shown in the figure, the impedance analysis of three kinds of food is given respectively, the horizontal axis represents the frequency (the specific frequency value is not given here), and the vertical axis represents the impedance (in ohms). Figure 4 As shown, the first food (that is, food with a high water content, such as vegetables) has a low impedance under low-frequency microwaves, and thus the food exhibits a high absorption rate under low-frequency microwaves. Therefore, the optimal absorption frequency of the first food is in the low-frequency band. Figure 5 and Figure 6 The following diagram shows the impedance information for the second ingredient (e.g., protein) and the third ingredient (e.g., an ingredient high in fiber). For example, the second ingredient could be beef and the third ingredient could be tomatoes. Both ingredients exhibit high absorption rates under medium-frequency microwaves, and therefore, their optimal absorption frequencies fall within the mid-frequency range. This difference in optimal absorption frequencies among different ingredients suggests that different ingredients require specific frequency and power combinations for simultaneous maturation during microwave cooking.

[0064] Based on the above facts, the microwave absorption rate of the dishes to be cooked at different frequencies can be obtained, that is, the optimal absorption frequency of different ingredients in the dishes can be obtained, so as to adjust the frequency and output power of the solid-state source.

[0065] Step S302: adjusting the frequency and output power of the solid-state source according to the microwave absorptivity at different frequencies.

[0066] After determining the microwave absorption rate at different frequencies, the frequency and output power of the microwave output by the solid-state source can be adjusted.

[0067] Optionally, when the dish to be cooked contains only one ingredient, after determining the microwave absorption rate at different frequencies, the frequency corresponding to the highest microwave absorption rate can be determined, so as to control the solid-state source to continuously output microwaves with a higher output power at this frequency to increase the cooking speed.

[0068] Optionally, when the dish to be cooked contains multiple ingredients, after determining the microwave absorptivity at different frequencies, multiple frequencies corresponding to when the microwave absorptivity is greater than a preset threshold can be determined, thereby controlling the solid-state source to alternately output microwaves of these multiple frequencies to heat the dish to be cooked.

[0069] Optionally, there is no limit on the setting of the output power, and it can be set according to the maximum power that the solid-state source can output. For example, if the maximum power that the solid-state source can output is 160W, then when the solid-state source is controlled to heat the dishes to be cooked, the output power can be 150W.

[0070] For example, when it is determined that the microwave absorption rate is greater than a preset threshold, the corresponding multiple frequencies are frequency 1 and frequency 2, then the solid-state source is controlled to alternately output microwave 1 and microwave 2, the frequency of microwave 1 is frequency 1, the output power is 150W, and the frequency of microwave 2 is frequency 2, the output power is 150W.

[0071] Step S303: If the cooking end condition is met, control the solid-state source to stop generating microwaves.

[0072] After adjusting the frequency and output power of the solid-state source, it can be determined whether the cooking end condition is met. If so, the solid-state source can be controlled to stop generating microwaves.

[0073] Steps S301 and S302 can be repeated. This means that as the dish is heated, the microwave absorptivity of each ingredient changes. Specifically, as the heating process progresses, immature ingredients in the food absorb microwave energy more strongly, and the content and absorption characteristics of each ingredient in the food continuously change during the cooking process. Therefore, the microwave absorptivity at different frequencies can be continuously acquired during the cooking process, enabling dynamic adjustment of the microwave output from the solid-state microwave source. This dynamic adjustment mechanism is key to achieving efficient and uniform cooking.

[0074] Optionally, steps S301 and S302 can be repeated in cycles. For example, for each cycle, step S301 is performed during the first time period (e.g., the first half of the cycle), and step S302 is performed during the second time period (e.g., the second half of the cycle). After step S302 is executed, a determination is made as to whether the cooking end condition is met. If the cooking end condition is met, the solid-state source is controlled to stop generating microwaves and an indication indicating the cooking is complete is issued. If the cooking end condition is not met, the process proceeds to the next cycle and continues with steps S301 and S302.

[0075] This application achieves precise control of microwave absorptivity at different frequencies by adjusting the frequency and output power of the solid-state source. The output power is dynamically allocated based on the microwave absorptivity of the food placed in the cavity at different frequencies. When the user places the food to be cooked in the microwave device, the solid-state source's output power in each frequency band is automatically adjusted by real-time monitoring of changes in microwave absorptivity to ensure that all parts of the food are cooked simultaneously, thereby optimizing the user experience.

[0076] The microwave heating control method and microwave device provided by the present invention monitor the microwave absorptivity of the dish to be cooked at different frequencies in real time after the dish starts to be cooked, adjust the frequency and output power of the solid-state source according to the microwave absorptivity at different frequencies, and control the solid-state source to stop generating microwaves if the cooking end conditions are met. By real-time monitoring the microwave absorptivity at different frequencies to adjust the frequency and output power of the solid-state source, cooking is performed based on the frequency and output power required by different ingredients, thereby achieving uniform heating of different ingredients and achieving an ideal cooking state at the same time.

[0077] Optionally, real-time monitoring of the microwave absorptivity of the dish to be cooked at different frequencies includes:

[0078] Controlling the solid-state source to perform frequency sweeping radiation toward the cavity through the radiation component; the frequency sweeping radiation means sequentially emitting microwaves of different frequencies within a preset frequency range;

[0079] For any frequency, the reflected power received by the radiation component is obtained, and the microwave absorption rate at the frequency is determined based on the reflected power and the transmission power of the microwave corresponding to the frequency.

[0080] When obtaining microwave absorption rates at different frequencies, the solid-state source can be controlled to sweep radiation toward the cavity via the radiating component, emitting microwaves of varying frequencies within a preset frequency range. For example, when the preset frequency range is 900 MHz to 930 MHz, microwaves can be emitted sequentially in 5 MHz increments, i.e., emitting microwaves at 900, 905, 910, and finally 930 MHz. When obtaining the microwave absorption frequency, the emitted microwaves can have a relatively low power, exemplarily 50 W.

[0081] Optionally, the solid-state source can be controlled to sweep the radiation toward the cavity through antenna A, or the solid-state source can be controlled to sweep the radiation toward the cavity through antenna B to obtain the microwave absorptivity of the dish to be cooked at different frequencies.

[0082] After the microwaves are transmitted, the reflected power may be received by the radiation component and sent to the controller, so that the controller determines the microwave absorption rate according to the reflected power and the transmitted power.

[0083] Optionally, the microwave absorptivity is calculated as follows:

[0084]

[0085] in, is the transmission power of the radiating component; is the reflected power received by the radiating component.

[0086] Alternatively, the microwave absorptivity may be calculated separately for each frequency.

[0087] Figure 7a A schematic diagram of microwave absorptivity at different frequencies in a first cycle provided by an embodiment of the present application; Figure 7b A schematic diagram of assigning power to different frequencies in a first cycle provided by an embodiment of the present application; Figure 7c A schematic diagram of microwave absorptivity at different frequencies in the 20th cycle provided in an embodiment of the present application; Figure 7d A schematic diagram of assigning power to different frequencies in the 20th cycle provided in an embodiment of the present application; Figure 7e A schematic diagram of microwave absorptivity at different frequencies at the 40th cycle provided in an embodiment of the present application; Figure 7f This is a schematic diagram of assigning power to different frequencies in the 40th cycle provided by an embodiment of the present application. Figure 7a 、 Figure 7c and Figure 7e As shown in the figure, the microwave absorptivity at the same frequency will change with the increase of the cycle; and within one cycle, there are obvious differences in the microwave absorptivity at different frequencies.

[0088] By periodically sweeping the frequency, the microwave absorption rate of the dishes to be cooked at different frequencies can be dynamically monitored.

[0089] Optionally, adjust the frequency and output power of the solid-state source according to the microwave absorptivity at different frequencies, including:

[0090] According to the microwave absorption rate at different frequencies, the output power at each frequency when the solid-state source is swept and radiated to the cavity through the radiation component is adjusted.

[0091] When adjusting the frequency and output power of the solid-state source, microwaves of various frequencies can be emitted to the cavity in a periodic frequency sweeping manner, and the output power of the microwaves of various frequencies is different.

[0092] By emitting microwaves in a swept frequency radiation manner, microwaves of various frequencies can be emitted evenly to achieve uniform heating of dishes, thereby improving the cooking quality of the dishes.

[0093] Optionally, the solid-state source may be controlled to sweep the radiation toward the cavity through antenna A, or the solid-state source may be controlled to sweep the radiation toward the cavity through antenna B to heat the food to be cooked.

[0094] Optionally, according to the microwave absorptivity at different frequencies, the output power of the solid-state source at each frequency when sweep-frequency radiating to the cavity through the radiation component is adjusted, including:

[0095] determining a target frequency according to microwave absorption rates at different frequencies; wherein the microwave absorption rate corresponding to the target frequency is greater than the microwave absorption rate corresponding to the non-target frequency;

[0096] According to the target frequency, the output power at each frequency when the solid-state source is swept-frequency radiated toward the cavity through the radiation component is adjusted.

[0097] When performing frequency sweep radiation to the cavity, the target frequency can be determined first, that is, according to the microwave absorption rate at different frequencies, the frequency corresponding to the higher microwave absorption rate is determined as the target frequency.

[0098] After determining the target frequency, when sweeping the radiation to the cavity, when emitting microwaves of the target frequency, the corresponding output power can be higher, thereby accelerating the ripening of the corresponding food.

[0099] For example, for ingredients with a high moisture content, higher output power can be allocated at a specific frequency to accelerate moisture evaporation; while for ingredients with a high fat content, higher output power can be allocated at another specific frequency to promote even cooking of the fat. Through this precise power regulation, the system can process multiple ingredients simultaneously, ensuring that each ingredient is cooked to the ideal state, significantly improving the user experience.

[0100] Optionally, the target frequency is determined based on microwave absorptivity at different frequencies, including:

[0101] For any frequency, when the microwave absorptivity at the frequency is greater than a preset threshold, the frequency is determined to be the target frequency.

[0102] The target frequency can be determined based on a preset threshold, which is a microwave absorptivity. For any frequency, if the microwave absorptivity at that frequency is greater than the preset threshold, it is considered the target frequency. If the microwave absorptivity at that frequency is less than or equal to the preset threshold, it is considered a non-target frequency.

[0103] like Figure 7a As shown, the preset threshold is a horizontal line where the microwave absorption rate is close to 0.99. If the microwave absorption rates corresponding to the frequencies of 910 MHz, 915 MHz, and 920 MHz are greater than 0.99, then these three frequencies can be determined to be target frequencies.

[0104] By setting a preset threshold, the microwave absorption rate at different frequencies can be judged to accurately determine the target frequency.

[0105] Optionally, the method further includes:

[0106] Determine the maximum value of the microwave absorptivity at different frequencies obtained this time;

[0107] The preset threshold is determined according to the maximum value and a preset ratio.

[0108] Optionally, the preset threshold value can be set dynamically. For example, the preset threshold value can be determined based on the microwave absorptivity at different frequencies obtained during the current cycle. Alternatively, the maximum value of the microwave absorptivity at each frequency during the current cycle can be determined, and the product of the maximum value and the preset ratio can be determined as the preset threshold value.

[0109] like Figure 7a 、 Figure 7c and Figure 7e As shown, the preset thresholds corresponding to the first cycle, the twentieth cycle, and the fortieth cycle are all different.

[0110] Through the above method, the preset threshold value can be dynamically adjusted to achieve dynamic distribution of the output power of the solid-state source at different frequencies.

[0111] Optionally, adjusting the output power of the solid-state source at each frequency when sweep-frequency radiating to the cavity through the radiation component according to the target frequency includes:

[0112] Determining an output power corresponding to the target frequency and determining an output power corresponding to a non-target frequency; the output power corresponding to the target frequency is greater than the output power corresponding to the non-target frequency;

[0113] According to the output powers corresponding to the target frequency and the non-target frequency respectively, the solid-state source is controlled to sweep the radiation toward the cavity through the radiation component to heat the food to be cooked; the sweep radiation means that microwaves of different frequencies and corresponding output powers are emitted sequentially within a preset frequency range.

[0114] After determining the target frequency, the output power corresponding to the target frequency and the output power corresponding to the non-target frequency can be set, thereby controlling the solid-state source to output microwaves of corresponding output power at different frequencies.

[0115] For each target frequency, when controlling the solid-state source, higher output power can be given to these target frequencies and lower output power can be given to non-target frequencies to ensure that the emitted microwaves of the target frequency can effectively promote the maturation of key ingredients in the food.

[0116] For example, the output power corresponding to the target frequency can be determined as power 1, and the output power corresponding to the non-target frequency can be determined as power 2, and power 1 is greater than power 2. By setting a higher output power for each target frequency, each ingredient can achieve the best cooking effect in one cycle.

[0117] like Figure 7b 、 Figure 7d and Figure 7f As shown, for the target frequency, a higher output power, such as 150W, can be set; for the non-target frequency, a lower output power, such as 100W, can be set.

[0118] Optionally, the output powers corresponding to the target frequencies are the same; or, the output powers corresponding to the target frequencies are positively correlated with the microwave absorptivity corresponding to the target frequencies.

[0119] The output power of each target frequency can be the same, which facilitates the control of the solid-state source. Figure 7b 、 Figure 7d and Figure 7f As shown in FIG, for each target frequency, the corresponding output power is 150W.

[0120] In addition, the output power corresponding to each target frequency may also be different. Optionally, when the microwave absorption rate corresponding to the target frequency is higher, the output power is greater; when the microwave absorption rate corresponding to the target power is lower, the output power is lower. Figure 7a As shown, the microwave absorption rate at a frequency of 915 MHz is greater than that at a frequency of 920 MHz. Therefore, when setting the output powers corresponding to the two frequencies, it can be related to their microwave absorption rates, and the output power corresponding to the frequency of 915 MHz can be set to be greater than the output power corresponding to the frequency of 920 MHz.

[0121] Optionally, the method further includes:

[0122] Acquiring an image of the dish to be cooked;

[0123] When it is determined according to the image that the dish to be cooked is cooked, it is determined that the cooking end condition is met.

[0124] Whether cooking is complete can be determined based on an image of the dish being cooked. An image capture device can be provided within the cavity. After a cycle is completed, the image capture device can be controlled to capture an image of the dish being cooked and analyze and identify the image to determine whether the dish is cooked. If the dish is cooked, the cooking completion condition can be determined to be met. If the dish is not cooked, the cooking completion condition can be determined to be unmet.

[0125] Optionally, when determining whether the dish to be cooked is mature, it can be implemented based on a pre-trained neural network model set in the controller. The neural network model is trained through training data so that the neural network model can specifically identify whether the dish is mature. During the cooking process, the acquired image is input into the above-mentioned neural network model to determine whether the dish is mature.

[0126] Figure 8 A flow chart of another microwave heating control method provided in an embodiment of the present application is shown as follows: Figure 8 As shown, the entire heating process is divided into multiple cycles for control. After the dish to be cooked is placed in the microwave device, for each cycle, in the first half of the cycle, a 900-930 MHz frequency sweep is performed based on antenna A to obtain the microwave absorption rate at different frequencies. A preset threshold is set based on the maximum value of the microwave absorption rate at different frequencies obtained. Based on the preset threshold and the microwave absorption rate at different frequencies determined in the first half of the cycle, the output power distribution at each frequency in the second half of the cycle is determined. Optionally, in the second half of the cycle, a 900-930 MHz frequency sweep can be performed based on antenna B, and a higher output power is assigned to frequencies with a microwave absorption rate higher than the preset threshold to ensure that these frequencies can effectively promote the maturation of key ingredients in the food. Figures 7a to 7f As shown, through the above method, the power distribution of the solid-state source at each frequency can be dynamically adjusted according to the real-time monitored microwave absorption rate, thereby optimizing the heating effect of different ingredients.

[0127] Furthermore, given that the heating process is a dynamic one, a re-sweep between 900 and 930 MHz is performed for each cycle to determine the microwave absorption rate at each frequency within the current cycle. Furthermore, the frequency that should be assigned a higher power level is re-determined based on the results of each sweep to ensure optimal cooking results for each ingredient in each cycle. This periodic dynamic adjustment mechanism effectively addresses the dynamic changes in food heating, ensuring optimal cooking results for each ingredient when cooking multiple dishes simultaneously, thereby improving cooking quality.

[0128] Figure 9 A schematic structural diagram of a microwave heating control device 90 provided in an embodiment of the present application; the device 90 includes:

[0129] The monitoring module 901 is used to monitor the microwave absorption rate of the dish to be cooked at different frequencies in real time after the dish starts to be cooked;

[0130] An adjustment module 902 is used to adjust the frequency and output power of the solid-state source according to the microwave absorption rate at different frequencies;

[0131] The control module 903 is configured to control the solid-state source to stop generating microwaves if a cooking end condition is met.

[0132] Optionally, when monitoring the microwave absorptivity of the dish to be cooked at different frequencies in real time, the monitoring module 901 is specifically configured to:

[0133] Controlling the solid-state source to perform frequency sweeping radiation toward the cavity through the radiation component; the frequency sweeping radiation means sequentially emitting microwaves of different frequencies within a preset frequency range;

[0134] For any frequency, the reflected power received by the radiation component is obtained, and the microwave absorption rate at the frequency is determined based on the reflected power and the transmission power of the microwave corresponding to the frequency.

[0135] Optionally, when adjusting the frequency and output power of the solid-state source according to the microwave absorptivity at different frequencies, the adjustment module 902 is specifically configured to:

[0136] According to the microwave absorption rate at different frequencies, the output power at each frequency when the solid-state source is swept and radiated to the cavity through the radiation component is adjusted.

[0137] Optionally, when adjusting the output power of the solid-state source at each frequency when sweep-frequency radiating to the cavity through the radiation component according to the microwave absorptivity at different frequencies, the adjustment module 902 is specifically configured to:

[0138] determining a target frequency according to microwave absorption rates at different frequencies; wherein the microwave absorption rate corresponding to the target frequency is greater than the microwave absorption rate corresponding to the non-target frequency;

[0139] According to the target frequency, the output power at each frequency when the solid-state source is swept-frequency radiated toward the cavity through the radiation component is adjusted.

[0140] Optionally, when determining the target frequency according to the microwave absorptivity at different frequencies, the adjustment module 902 is specifically configured to:

[0141] For any frequency, when the microwave absorptivity at the frequency is greater than a preset threshold, the frequency is determined to be the target frequency.

[0142] Optionally, the device further includes: a preset threshold determination module, configured to:

[0143] Determine the maximum value of the microwave absorptivity at different frequencies obtained this time;

[0144] The preset threshold is determined according to the maximum value and a preset ratio.

[0145] Optionally, when adjusting the output power of the solid-state source at each frequency when sweep-frequency radiating to the cavity through the radiation component according to the target frequency, the adjustment module 902 is specifically configured to:

[0146] Determining an output power corresponding to the target frequency and determining an output power corresponding to a non-target frequency; the output power corresponding to the target frequency is greater than the output power corresponding to the non-target frequency;

[0147] According to the output powers corresponding to the target frequency and the non-target frequency respectively, the solid-state source is controlled to sweep the radiation toward the cavity through the radiation component to heat the food to be cooked; the sweep radiation means that microwaves of different frequencies and corresponding output powers are emitted sequentially within a preset frequency range.

[0148] Optionally, the output powers corresponding to the target frequencies are the same; or, the output powers corresponding to the target frequencies are positively correlated with the microwave absorptivity corresponding to the target frequencies.

[0149] Optionally, the device further includes a judgment module configured to:

[0150] Acquiring an image of the dish to be cooked;

[0151] When it is determined according to the image that the dish to be cooked is cooked, it is determined that the cooking end condition is met.

[0152] The microwave heating control device 90 provided in the embodiment of the present application can realize the above-mentioned Figure 3The microwave heating control method of the embodiment shown has similar implementation principles and technical effects, which will not be described in detail here.

[0153] The present application also provides a microwave device, including:

[0154] A controller, configured to execute any of the aforementioned microwave heating control methods;

[0155] a solid-state source for generating microwave signals of different frequencies and different output powers under the control of the controller;

[0156] a radiation component, configured to radiate corresponding microwaves into the cavity according to the microwave signal generated by the solid-state source;

[0157] A coaxial cable is used to connect the solid-state source and the radiation component.

[0158] Figure 10 Schematic diagram of the hardware structure of a controller 100 provided in an embodiment of the present application. Figure 10 As shown, the controller 100 provided in this embodiment includes: at least one processor 1001 and a memory 1002. The processor 1001 and the memory 1002 are connected via a bus 1003.

[0159] During the specific implementation process, at least one processor 1001 executes the computer-executable instructions stored in the memory 1002, so that the at least one processor 1001 executes the method in the above method embodiment.

[0160] The specific implementation process of the processor 1001 can be found in the above method embodiment. Its implementation principle and technical effects are similar and will not be repeated here in this embodiment.

[0161] In the above Figure 10 In the illustrated embodiment, it should be understood that the processor may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASICs), etc. A general-purpose processor may be a microprocessor or any conventional processor. The steps of the method disclosed in the application may be directly executed by a hardware processor or by a combination of hardware and software modules within the processor.

[0162] The memory may include a high-speed RAM memory, and may also include a non-volatile storage NVM, such as at least one disk storage.

[0163] A bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus. Buses can be categorized as address buses, data buses, and control buses. For ease of illustration, the buses in the drawings of this application are not limited to just one bus or just one type of bus.

[0164] An embodiment of the present application further provides a computer-readable storage medium, in which computer-executable instructions are stored. When a processor executes the computer-executable instructions, the method of the above-mentioned method embodiment is implemented.

[0165] An embodiment of the present application also provides a computer program product, including a computer program, which implements the method of the above method embodiment when executed by a processor.

[0166] The computer-readable storage medium mentioned above can be implemented by any type of volatile or non-volatile memory device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The computer-readable storage medium can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0167] An exemplary readable storage medium is coupled to a processor so that the processor can read information from the readable storage medium and write information to the readable storage medium. Of course, the readable storage medium can also be an integral part of the processor. The processor and the readable storage medium can be located in an application specific integrated circuit (ASIC). Of course, the processor and the readable storage medium can also exist in the device as discrete components.

[0168] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0169] The serial numbers of the above embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0170] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a better embodiment. Based on this understanding, the technical solution of this application, or the part that contributes to the existing technology, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for enabling a terminal device (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in each embodiment of this application.

[0171] The above are only preferred embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A microwave heating control method, characterized in that: include: After the dish to be cooked begins to be cooked, real-time monitoring of the microwave absorptivity of the dish to be cooked at different frequencies; Adjust the frequency and output power of the solid-state source according to the microwave absorption rate at different frequencies; If the cooking end condition is met, the solid-state source is controlled to stop generating microwaves.

2. The method according to claim 1, characterized in that Real-time monitoring of the microwave absorptivity of the dish to be cooked at different frequencies includes: Controlling the solid-state source to perform frequency sweeping radiation toward the cavity through the radiation component; the frequency sweeping radiation means sequentially emitting microwaves of different frequencies within a preset frequency range; For any frequency, the reflected power received by the radiation component is obtained, and the microwave absorption rate at the frequency is determined based on the reflected power and the transmission power of the microwave corresponding to the frequency.

3. The method according to claim 1, characterized in that Adjust the frequency and output power of the solid-state source according to the microwave absorption rate at different frequencies, including: According to the microwave absorption rate at different frequencies, the output power at each frequency when the solid-state source is swept and radiated to the cavity through the radiation component is adjusted.

4. The method according to claim 3, characterized in that According to the microwave absorption rate at different frequencies, the output power of the solid-state source at each frequency when sweeping the radiation to the cavity through the radiation component is adjusted, including: determining a target frequency according to microwave absorption rates at different frequencies; wherein the microwave absorption rate corresponding to the target frequency is greater than the microwave absorption rate corresponding to the non-target frequency; According to the target frequency, the output power at each frequency when the solid-state source is swept-radiated to the cavity through the radiation component is adjusted.

5. The method according to claim 4, characterized in that The target frequency is determined based on the microwave absorption rate at different frequencies, including: For any frequency, when the microwave absorptivity at the frequency is greater than a preset threshold, the frequency is determined to be the target frequency.

6. The method according to claim 5, characterized in that The method further comprises: Determine the maximum value of the microwave absorptivity at different frequencies obtained this time; The preset threshold is determined according to the maximum value and a preset ratio.

7. The method according to claim 4, characterized in that According to the target frequency, adjusting the output power of the solid-state source at each frequency when sweeping the radiation to the cavity through the radiation component includes: Determining an output power corresponding to the target frequency and determining an output power corresponding to a non-target frequency; the output power corresponding to the target frequency is greater than the output power corresponding to the non-target frequency; According to the output powers corresponding to the target frequency and the non-target frequency respectively, the solid-state source is controlled to sweep the radiation toward the cavity through the radiation component to heat the food to be cooked; the sweep radiation means that microwaves of different frequencies and corresponding output powers are emitted sequentially within a preset frequency range.

8. The method according to claim 7, characterized in that The output powers corresponding to the target frequencies are the same; or, the output powers corresponding to the target frequencies are positively correlated with the microwave absorptivity corresponding to the target frequencies.

9. The method according to any one of claims 1 to 8, characterized in that The method further comprises: Acquiring an image of the dish to be cooked; When it is determined according to the image that the dish to be cooked is cooked, it is determined that the cooking end condition is met.

10. A microwave device, characterized in that: include: A controller, configured to execute the method according to any one of claims 1 to 9; a solid-state source for generating microwave signals of different frequencies and different output powers under the control of the controller; a radiation component, configured to radiate corresponding microwaves into the cavity according to the microwave signal generated by the solid-state source; A coaxial cable is used to connect the solid-state source and the radiation component.

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