CN114484525A - Kitchen range and control method thereof - Google Patents

Abstract

The embodiment of the application discloses a cooker and a control method thereof, relates to the technical field of intelligent kitchen electricity, and is used for ensuring the accuracy of temperature control of a cooker. This cooking utensils include: the temperature sensor is used for detecting the temperature value of the pot; a controller connected to the temperature sensor, the controller configured to: acquiring a real-time temperature value of the pot in the current period; if the absolute value of the difference value between the real-time temperature value and the target temperature value is smaller than or equal to a preset threshold value, determining a predicted temperature value of each gear according to the real-time temperature value and the temperature change speed of each gear of the stove; the predicted temperature value of one gear is a temperature value which is predicted to be reached by the cooker when the cooker uses the gear in the next period of the current period; and taking the gear corresponding to the minimum value in the absolute values of the difference values between the predicted temperature value and the target temperature value of each gear as the gear used by the stove in the next period of the current period.

Description

A cooker and its control method

technical field

The present application relates to the technical field of intelligent kitchen appliances, and in particular, to a cooker and a control method thereof.

Background technique

Today's kitchenware products are undergoing a process of continuous refinement and intelligence. As the intelligence of large home appliances such as refrigerators, ovens, and range hoods has become more and more perfect, small home appliances such as induction cookers have also joined the ranks of intelligent upgrading.

The intelligence of the induction cooktop is mainly reflected in the automatic temperature control, and the temperature control technology most adopted in the industry is the temperature control algorithm scheme realized by the proportional-integral-derivative (PID) algorithm control. The temperature control through proportional, integral and differential adjustment can predict the nonlinear curve change and have better processing ability to the temperature curve. However, the temperature curve during cooking will be affected by environmental variables, such as air pressure, water temperature, season, etc., which leads to the hysteresis of the temperature control technology provided by the PID algorithm, resulting in the problem of low accuracy of temperature control.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a cooker and a control method thereof, which are used to ensure the accuracy of temperature control of the cooker.

In a first aspect, a cooktop is provided, including:

A temperature sensor, used to detect the temperature value of the cookware;

A controller connected to a temperature sensor, the controller is configured to:

Get the real-time temperature value of the pot in the current cycle;

If the absolute value of the difference between the real-time temperature value and the target temperature value is less than or equal to the preset threshold, the predicted temperature value of each gear is determined according to the real-time temperature value and the temperature change speed of each gear of the cooker; one gear The predicted temperature value is the temperature value predicted by the cookware to reach when the cooker uses this gear in the next cycle of the current cycle;

The gear position corresponding to the minimum value of the absolute value of the difference between the predicted temperature value of each gear position and the target temperature value is used as the gear position used by the cooktop in the next cycle of the current cycle.

Based on the above technical solution, if the absolute value of the difference between the real-time temperature value and the target temperature value is less than or equal to the preset threshold, it means that the real-time temperature value is very close to the target temperature value. Realize constant temperature control of pot temperature. Since each gear of the cooker has a corresponding temperature change speed, it can be determined according to the real-time temperature value and the temperature change speed of each gear of the cooker to determine if each gear is in the next cycle of the current cycle if the cooker uses this gear The predicted temperature value that the cookware can reach. Further, the gear position corresponding to the minimum value among the absolute values of the difference between the predicted temperature value of each gear position and the target temperature value is used as the gear position used by the cooker in the next cycle of the current cycle. It can be understood that if the absolute value of the difference between the predicted temperature value of a gear and the target temperature value is the smallest, it means that the predicted temperature value corresponding to this gear is closest to the target temperature value, so this gear can be used as a cooker. The gear to be used in the next cycle. In this way, based on the relationship between the predicted temperature value of each gear of the cooker and the target temperature value, the gear to be used by the cooker in the next cycle after the current cycle is determined, so that the cooker can be accurately adjusted to heat in the next cycle. The gear to be used by the cookware is to maintain the constant temperature of the cookware and ensure the accuracy of the temperature control of the cookware.

In some embodiments, the controller is configured to determine the predicted temperature value corresponding to each gear according to the real-time temperature value and the temperature change speed of each gear of the cooker, and specifically perform the following steps: according to the real-time temperature value, each gear of the cooker The temperature change rate and temperature correction factor corresponding to the gear position determine the predicted temperature value corresponding to each gear position.

In some embodiments, the controller is further configured to: obtain the temperature value of the cookware at each of the N moments included in the previous cycle of the current cycle, where N is a positive integer; The temperature value at each moment in each moment is used to determine the predicted temperature value of the cookware in the current cycle; the temperature correction factor is obtained according to the predicted temperature value and real-time temperature value of the cookware during the current cycle.

In some embodiments, the controller is configured to obtain a temperature correction factor according to the predicted temperature value of the cookware in the current cycle and the real-time temperature value, and specifically performs the following steps: subtracting the predicted temperature of the cookware during the current cycle from the real-time temperature value The temperature value gets the temperature correction factor.

In some embodiments, the controller is configured to determine the predicted temperature value of the cookware in the current cycle according to the temperature values at each of the N moments included in the previous cycle, and specifically perform the following steps :

确定当前周期的上一个周期的温度变化量ΔT，其中，N为当前周期的上一个周期包括的N个时刻，i为N个时刻中的第i时刻，T_i为第i时刻的温度值，a和f均为常数；According to the formula

Determine the temperature change ΔT of the previous cycle of the current cycle, where N is the N times included in the previous cycle of the current cycle, i is the ith time in the N times, and T _i is the temperature value at the ith time, a and f are both constants;

确定当前周期的上一个周期的温度偏移量ΔK，其中，b为常数；According to the formula

Determine the temperature offset ΔK of the previous cycle of the current cycle, where b is a constant;

According to the formula T _p =N×ΔT+ΔK+T _N , the predicted temperature value T _p of the cookware in the current cycle is determined, wherein T _N is the temperature value at the last moment in the previous cycle of the current cycle.

In some embodiments, the controller is further configured to: if the real-time temperature value of the cookware in the current cycle is greater than the target temperature value, and the absolute value of the difference between the real-time temperature value and the target temperature value is greater than a preset threshold, Control the cooker to adjust the gear to the minimum gear; or, if the real-time temperature value is less than the target temperature value, and the absolute value of the difference between the real-time temperature value and the target temperature value is greater than the preset threshold, control the cooker to adjust the gear to maximum gear.

In a second aspect, a method for controlling a cooker is provided. The method includes: acquiring a real-time temperature value of the cooker in a current cycle; if the absolute value of the difference between the real-time temperature value and the target temperature value is less than or equal to a preset threshold, According to the real-time temperature value and the temperature change speed of each gear of the cooker, the predicted temperature value of each gear is determined; the predicted temperature value of one gear is the predicted temperature of the cookware when the stove uses this gear in the next cycle of the current cycle. Temperature value; the gear corresponding to the minimum value of the absolute value of the difference between the predicted temperature value of each gear and the target temperature value is used as the gear used by the cooker in the next cycle of the current cycle.

In a third aspect, embodiments of the present application provide a controller, including: one or more processors; one or more memories; wherein the one or more memories are used to store computer program codes, and the computer program codes include computer instructions, When one or more processors execute the computer instructions, the controller executes any of the cooktop control methods provided in the second aspect.

In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium includes computer instructions, when the computer instructions are executed on the computer, the computer is made to execute any of the cooktops provided in the second aspect. Control Method.

In a fifth aspect, an embodiment of the present invention provides a computer program product, the computer program product can be directly loaded into a memory, and contains software codes, and the computer program product can be loaded and executed by a computer to implement as provided in the second aspect The control method of any kind of cooker.

It should be noted that the above computer instructions may be stored in whole or in part on a computer-readable storage medium. The computer-readable storage medium may be packaged together with the processor of the controller, or may be packaged separately with the processor of the controller, which is not limited in this application.

For the beneficial effects described in the second aspect to the fifth aspect in the present application, reference may be made to the analysis of the beneficial effects of the first aspect, which will not be repeated here.

Description of drawings

The accompanying drawings are used to provide a further understanding of the technical solutions of the present invention, and constitute a part of the specification. They are used to explain the technical solutions of the present invention together with the embodiments of the present application, and do not limit the technical solutions of the present invention.

FIG. 1 is a schematic structural diagram of a cooker according to an embodiment of the present application;

2 is a schematic diagram of a display control panel of a display of a cooktop according to an embodiment of the present application;

3 is a block diagram of a hardware configuration of a cooker provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of a setting position of a temperature sensor of a cooker according to an embodiment of the present application;

5 is a schematic diagram of a user clicking a function icon of a display of a cooktop according to an embodiment of the present application;

FIG. 6 is a schematic diagram of another user clicking a function icon of a display of a cooktop according to an embodiment of the present application;

FIG. 7 is a schematic flowchart of a method for controlling a cooktop according to an embodiment of the present application;

FIG. 8 is a schematic flowchart of another method for controlling a cooktop according to an embodiment of the present application;

FIG. 9 is a schematic flowchart of another method for controlling a cooktop according to an embodiment of the present application;

FIG. 10 is a schematic diagram of another kind of user clicking a function icon of a display of a cooktop according to an embodiment of the present application;

11 is a schematic diagram of a display of a cooktop displaying first prompt information according to an embodiment of the application;

12 is a schematic diagram of another kind of user clicking a function icon of a display of a cooktop according to an embodiment of the present application;

13 is a schematic diagram of displaying second prompt information on a display of a cooktop according to an embodiment of the present application;

FIG. 14 is a schematic diagram of a hardware structure of a controller according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

The terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of this application, unless stated otherwise, "plurality" means two or more.

In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integrated connection. ground connection. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood in specific situations. In addition, when describing pipelines, "connected" and "connected" used in this application have the meaning of conducting conduction. The specific meaning needs to be understood in context.

In the embodiments of the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations or illustrations. Any embodiments or designs described in the embodiments of the present application as "exemplary" or "such as" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present the related concepts in a specific manner.

FIG. 1 is a schematic structural diagram of a cooktop provided by the present application according to an exemplary embodiment.

In some embodiments, the cooktop may be a smart cooktop, a gas cooktop, an induction cooktop, or the like. For the convenience of description, the following description takes the cooker as an electromagnetic cooker as an example.

In some embodiments, the induction cooktop may also be called an induction cooker, which is a product of the modern kitchen revolution. The induction cooktop does not require an open flame or conduction heating, but generates heat directly at the bottom of the pot, so the thermal efficiency is greatly improved. The induction cooktop is made by the principle of electromagnetic induction heating, and is composed of a high-frequency induction heating coil, a high-frequency power conversion device and a controller. When in use, an alternating current is passed through the heating coil. An alternating magnetic field is generated around the coil, and most of the magnetic lines of the alternating magnetic field pass through the metal pot body, generating a large amount of eddy currents at the bottom of the pot, thereby generating the heat required for cooking. Since there is no open flame during the heating process, the induction cooktop is loved by users for its safety, hygiene, and convenience such as plug-and-play, and the market usage rate is getting higher and higher.

As shown in FIG. 1 , the cooktop 100 includes a housing 101 , a cooktop panel 102 , a display 103 and a controller 104 (not shown in FIG. 1 ).

The cooktop panel 102 is disposed on the housing 101, and the cooktop panel 102 can be used for carrying pots and pans.

In some embodiments, the material of the cooktop panel 102 may be a glass-ceramic panel or a ceramic panel. Among them, the glass-ceramic panel is transparent, while the ceramic panel is opaque. Both panels are specially treated and have excellent characteristics of high temperature resistance and impact resistance.

In some embodiments, the display 103 may be a liquid crystal display, an organic light-emitting diode (OLED) display. The specific type, size and resolution of the display 103 are not limited, and those skilled in the art can understand that the display 103 can be changed in performance and configuration as required.

The display 103 can be used to display the control panel of the cooktop 100 to realize the human-computer interaction function. For example, as shown in FIG. 2 , the control panel of the cooker 100 displayed on the display 103 may display icons of function buttons such as switch, stir fry, hot pot, boiling water, timer, soup porridge, constant temperature, slow fire, "+", "-" and so on. . Among them, the "+" function icon represents increasing the temperature or increasing the power, and the "-" function icon represents reducing the temperature or reducing the power. The rectangular box in the middle of the "+" and "-" function icons can be called power/temperature display. The box can be used to display the power currently used by the cooker, such as 2000W, or the set target temperature value, such as 200°C. It should be noted that the display of the function button on the display 103 in the form of an icon is only an example, and the embodiment of the present application does not limit the display manner of the function button.

In some embodiments, the cooktop 100 may feed back the current state of the cooktop 100 through the display 103 , for example, in a boiling water state or a stir frying state.

In some embodiments, the controller 104 refers to a device that can generate an operation control signal according to an instruction operation code and a timing signal, and instruct the cooktop 100 to execute a control instruction. Exemplarily, the controller 104 may be a central processing unit (CPU), a general-purpose processor, a network processor (NP), a digital signal processor (DSP), a microprocessor, or a microcontroller. device, programmable logic device (PLD), or any combination thereof. The controller 104 may also be other devices with processing functions, such as circuits, devices, or software modules, which are not limited in this embodiment of the present application.

FIG. 3 is a block diagram of the hardware configuration of the cooktop 100 according to an exemplary embodiment of the present application. As shown in FIG. 3 , the cooktop 100 may further include one or more of the following: a heating device 105 , a cooling fan 106 , a temperature sensor 107 , a pot moving detection device 108 , a voice prompt device 109 , a communication interface 110 and a memory 111 .

In some embodiments, the heating device 105 is connected to the controller 104 for providing a heat source for the cooktop 100 . The heating device 105 may be disposed below the cooktop panel 102 .

In some embodiments, the heating device 105 may be a commonly used electric heating device using electrical energy to achieve heating effect.

In some embodiments, the heating device 105 may be coil-like in shape.

In some embodiments, the cooling fan 106 is connected to the controller 104 for reducing the temperature inside the cooktop 100 . The cooling fan 106 can also be used to increase the air pressure of the air duct of the cooker 100 and discharge high-pressure air. It is a machine that relies on the input mechanical energy to increase the gas pressure and discharge the gas. dynamo.

In some embodiments, the cooker 100 further includes an air inlet and an air outlet that cooperate with the cooling fan 106 to dissipate heat inside the cooker 100 .

In some embodiments, the temperature sensor 107 is connected to the controller 104 for detecting the temperature value of the cookware, and sending the detected temperature value of the cookware to the controller 104 .

FIG. 4 is a schematic diagram of a setting position of a temperature sensor provided by the present application according to an exemplary embodiment. As shown in FIG. 4 , the temperature sensor 107 may be disposed at the center of the cooktop panel 102 .

In some embodiments, the temperature sensor 107 may be a semiconductor thermistor with a negative temperature coefficient, the resistance value of which will decrease as its own temperature increases, and the temperature increases as the temperature decreases, and the voltage across the resistor is caused by the change in resistance. The change.

In some embodiments, the controller 104 may acquire the real-time temperature value of the cookware in the current cycle according to the temperature sensor 107 . And according to the real-time temperature value of the cookware in the current cycle, the adjustment instruction of the gear position of the cooker 100 is determined, and then the adjustment instruction is issued.

In some embodiments, the pot moving detection device 108 is connected to the controller 104 for detecting whether the pot is placed on the cooktop 100 .

In some embodiments, pan removal detection device 108 includes a reed switch and a magnet. The two are in a contact state by default. At this time, the pot moving detection device 108 feeds back a pot moving signal to the controller 104 , and the pot moving signal is used to indicate that no pot is placed on the cooktop panel 102 . When the pot is placed on the cooktop panel 102 , the spring in the switch reed switch is pressed down due to the weight, causing the reed switch to move down and separate from the magnet. At this time, the pot moving detection device 108 feeds back a pot sitting signal to the controller 104 . , the pot sitting signal is used to indicate that a pot has been placed on the cooktop panel 102 .

In some embodiments, the controller 104 may also receive a signal fed back by the pot moving detection device 108 configured on the cooker 100 , and issue an adjustment instruction to the cooker 100 according to the feedback signal. For example, after the controller 104 receives the pot removal signal fed back by the pot removal detection device 108, the controller 104 sends a shutdown instruction to the cooktop 100 to avoid wasting power resources and reduce the probability of accidents.

In some embodiments, the voice prompting device 109 is connected to the controller 104, and can be used to send out voice prompts after the cooker 100 completes the relevant cooking work, such as a prompt sound of timing heating end, a prompt sound of overheating, and a prompt sound of pot moving. The content of the voice prompt may be preset by the manufacturer of the cooktop 100 , or may be set by the user through the display 103 .

In some embodiments, communication interface 110 is a component for communicating with external devices or servers according to various communication protocol types. For example, the communication interface 110 may include a wireless communication technology (WIFI) module, a Bluetooth module, a wired Ethernet module and a near field communication technology (near field communication, NFC) module and other network communication protocol chips or near field communication protocol chips, and At least one of the infrared receivers. The communication interface 110 may be used to communicate with other devices or communication networks (eg, Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc.). Exemplarily, the communication interface 110 is connected to the controller 104 , and the controller 104 can communicate with the terminal device through the communication interface 110 .

In some embodiments, the memory 111 is connected to the controller 104 for storing application programs and data, and the controller 104 executes various functions and data processing of the cooktop 100 by running the application programs and data stored in the memory 111 . The memory 111 mainly includes a storage program area and a storage data area, wherein the storage program area can store the operating system and the application program required for at least one function (such as a voice prompt function, information display function, etc.); data created at 100. In addition, the memory 111 may include high-speed random access memory, and may also include non-volatile memory, such as a magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices, and the like.

Although not shown in FIG. 3 , the cooker 100 may further include a power supply device (such as a battery and a power management chip) for supplying power to various components, and the battery may be logically connected to the controller 104 through the power management chip, so that the power supply device can realize the functions of the cooker 100 consumption management and other functions.

It can be understood that the structures illustrated in the embodiments of the present invention do not constitute a specific limitation on the cooktop. In other embodiments of the present application, the cooktop may include more or less components than shown, or some components may be combined, or some components may be separated, or different components may be arranged. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

In some embodiments, the cooktop may include multiple gears, eg, 8 gears. Different gears correspond to different heating powers.

Exemplarily, the following Table 1 exemplarily shows the corresponding relationship between different gears and heating power.

Table 1

gear power P1 1000W P2 1200W P3 1400W P4 1500W P5 1600W P6 1800W P7 2000W P8 2200W

It is easy to understand that a heating power corresponds to a temperature change rate, which can be understood as the greater the heating power, the faster the temperature change rate. And one heating power corresponds to one gear, that is, one gear corresponds to one temperature change speed, and then different gears correspond to different temperature change speeds. It can be understood that the higher the gear, the faster the temperature change speed.

In some embodiments, the cooktop may include multiple functions, and different functions correspond to different heating powers.

Exemplarily, Table 2 exemplarily shows the corresponding relationship between different functions of the cooktop and heating power.

Table 2

Function power slow fire 1000W soup porridge 1600W hot pot 1800W boil water 2000W stir fry 2200W

In some embodiments, different heating powers correspond to different temperature limits. For example, 1000W corresponds to 160°C, and 1600W corresponds to 210°C. It can be understood that if the cooker works at a power of 1000W, the cookware can be heated up to 160°C, and if the cooker works at a power of 1600W, the cooker can be heated to a maximum of 200°C.

Combining the above Table 2, it can be understood that the different functions of the cooker result in different maximum temperatures that the cookware can reach.

In some embodiments, the constant temperature function of the cooktop may correspond to a plurality of heating powers. For example, after setting the target temperature value by touching the "+" or "-" function icon on the display of the cooker, the user can touch the constant temperature function icon on the display of the cooker. Assuming that the target temperature value set by the user is 200°C, that is, the heating power is 1600W, the controller controls the cooker to always work at 1600W heating power until it receives the user's shutdown command (that is, the user clicks the switch function on the display of the cooker again. icon), the constant temperature mode is canceled, and the cooker enters the shutdown mode.

In some embodiments, the user can use the function of the cooktop that can adjust the power. It can be understood that, during the cooking process of the ingredients using the stove, the user may use different heating powers to cook the ingredients at different stages. For example, during the cooking process, the user may first choose high power to stir fry the ingredients, but after frying the ingredients for a period of time, in order to prevent the ingredients from sticking to the pot and making the ingredients taste good, the user may choose to reduce the power of the cooker to prevent The ingredients are simmered over low heat.

Usually, the user can adjust the temperature of the pot by touching the "+" or "-" icon on the display of the cooker to adjust the heating power of the cooker when using the cooker.

In some embodiments, as shown in FIG. 5 , assuming that the user chooses to use the cooktop to cook vegetables, the user can click the stir fry function icon on the display of the cooker to send a stir fry instruction to the cooker. The controller receives the stir fry instruction sent by the user, and in response to the stir fry instruction sent by the user, controls the power/temperature display box of the display to display 2200W, and controls the cooker to work in the P8 gear.

After the cooker works at the P8 gear for a period of time, the user needs to slow stew the ingredients. The user can choose to click the "-" function icon on the display of the cooker to send a power reduction command to the cooker. Assuming that the user needs to reduce the heating power to 1400W, after receiving the power reduction command sent by the user, the cooker will control the power/temperature display box of the display to display 1400W in response to the power reduction command sent by the user, and control the cooker to work in the P3 gear. .

In some embodiments, the user may use the function of the cooktop to maintain a constant temperature. For example, when a user uses a cooker to fry ingredients, the oil temperature in the cooker needs to be kept at a constant temperature, that is to say, the cooker needs to keep the oil temperature in the cooker at a constant temperature, so as to avoid the oil temperature in the cooker rising and falling. User brings bad cooking experience.

In some embodiments, as shown in FIG. 6 , the user can set the frying temperature value (ie the target temperature value) by touching the "+" or "-" function icon on the display of the cooktop, and then click the constant temperature function icon , to control the cooker to enter the constant temperature mode. Assuming that the target temperature value set by the user is 210°C, after the controller receives the user's instruction to set the target temperature value and the constant temperature mode instruction, in response to the user's instruction to set the target temperature value and the instruction to enter the constant temperature mode, the controller controls The cooker works in any gear of P5, P6, P7 or P8. For example, control the cooker to work in the P6 gear, and control the power/temperature display box of the monitor to display 210°C.

It can be seen from the above background technology that the current temperature control algorithm cannot achieve precise control of the temperature of the cookware, which can be understood as the current temperature control algorithm cannot enable the cooker to achieve precise control of the temperature of the cookware at a constant temperature. However, the embodiment of the present application provides a control method for a cooker, which can predict that the cooker will use each gear in the next cycle to make the cookware all The predicted temperature value that can be achieved, and then according to the predicted temperature value corresponding to each gear of the cooker, the gear to be used by the cooker in the next cycle can be determined, so that the cooker can accurately adjust the gear to be used in the next cycle, so as to maintain the pot. The constant temperature of the cookware ensures precise control of the cookware temperature.

The embodiments of the present application will be described in detail below with reference to the accompanying drawings in the description.

The embodiment of the present application provides a method for controlling a cooktop, which is applied to the controller 104 in the cooktop 100 described above. As shown in Figure 7, the control method may include the following steps:

S101. Obtain the real-time temperature value of the cookware in the current cycle.

As can be seen from the above, if the user needs to use the stove to fry the ingredients, the user can set the target temperature value by touching the "+" or "-" function icon on the display of the stove, and then click the constant temperature on the display of the stove. function icon to control the hob into thermostatic mode. The target temperature value can be understood as the temperature value that the user needs to make the pot reach when frying the food.

After receiving the user's instruction to set the target temperature value and the instruction to enter the constant temperature mode, the controller periodically obtains the real-time temperature value of the cookware in response to the user's instruction to set the target temperature value and the instruction to enter the constant temperature mode.

The real-time temperature value can be understood as the temperature value of the cookware in the current cycle, and the time interval between two cycles satisfies the preset time interval. The preset time interval can be set by the user; or, the preset time interval can be customized for the cooktop. Exemplarily, the above-mentioned preset time interval is 3 minutes.

S102. If the absolute value of the difference between the real-time temperature value and the target temperature value is less than or equal to a preset threshold, determine the predicted temperature value of each gear according to the real-time temperature value and the temperature change speed of each gear of the cooker.

In some embodiments, the user may set a target temperature value for the cooker and control the cooker to enter the constant temperature mode after a period of time after using the cooker for heating treatment, so the real-time temperature value of the cooker in the current cycle may be higher than the target The temperature value may also be lower than the target temperature value.

If the absolute value of the difference between the real-time temperature value and the target temperature value is less than or equal to the preset threshold, it means that the real-time temperature value of the cookware in the current cycle is already close to the target temperature value, and the controller does not need to control the cooker to a large extent Increase the gear for rapid heating treatment or greatly reduce the gear for rapid cooling treatment. The controller can control the cooker to enter the fine-tuning mode, that is, adjust the gear of the cooker in a small range, so that the temperature value of the cooker is kept within the target temperature value range, so as to maintain the constant temperature of the cooker. The preset threshold value may be preset by the manufacturer of the cooker when it leaves the factory, or may be set by the user through the display of the cooker. For example, the preset threshold is 10°C.

According to the real-time temperature value of the current cycle, the controller determines that after controlling the cooker to enter the fine-tuning mode, it needs to know the gear to be used by the cooker in the next cycle after the current cycle, so as to realize the fine-tuning of the temperature of the cookware, and then realize the maintenance of the cookware. constant temperature.

It can be seen from the above that the cooker can have multiple gears, and different gears correspond to different temperature change speeds.

In some embodiments, the controller may determine the predicted temperature value of each gear according to the real-time temperature value of the cookware in the current cycle and the temperature change speed corresponding to each gear of the cooker. Wherein, the predicted temperature value of one gear is the temperature value predicted to be reached by the cookware when the cooker uses the gear in the next cycle of the current cycle.

S103. Use the gear position corresponding to the minimum value of the absolute value of the difference between the predicted temperature value of each gear position and the target temperature value as the gear position used by the cooktop in the next cycle of the current cycle.

After the predicted temperature value corresponding to each gear is determined, the predicted temperature value corresponding to each gear may be compared with the target temperature value. If the absolute value of the difference between the predicted temperature value and the target temperature value of one gear in each gear is the smallest, it represents the temperature that the cooker can reach after using this gear in the next cycle after the current cycle. The value is closest to the target temperature value, so this gear can be used as the gear to be used by the cooktop in the next cycle after the current cycle.

Exemplarily, it is assumed that the target temperature value set by the user is 200° C., and the cooktop includes 4 gears (the first gear, the second gear, the third gear and the fourth gear). If the predicted temperature value corresponding to the first gear is 240℃, the predicted temperature corresponding to the second gear is 140℃, the predicted temperature corresponding to the third gear is 180℃, and the predicted temperature corresponding to the fourth gear is 180℃ 250°C. It can be seen from the calculation that the absolute value of the difference between the predicted temperature value corresponding to the third gear and the target temperature value is the smallest, which is 20°C, then the third gear can be used as the desired temperature of the cooker in the next cycle after the current cycle. gear used.

Based on the embodiment shown in FIG. 7 , when the absolute value of the difference between the real-time temperature value of the cookware in the current cycle and the target temperature value is less than or equal to the preset threshold, it represents the real-time temperature value of the cookware in the current cycle and When it is close to the target temperature value, you can fine-tune the range of the cooker to keep the temperature of the cookware constant. Since each gear of the cooker corresponds to a different temperature change speed, it can be determined according to the real-time temperature value and the temperature change speed of each gear that in the next cycle after the current cycle, if the cooker uses this gear when the cooker will cook The predicted temperature value that can be achieved. Further, the gear position corresponding to the minimum value among the absolute values of the difference between the predicted temperature value and the target temperature value of each gear position is taken as the gear position to be used by the cooktop in the next cycle of the current cycle. It can be understood that if the absolute value of the difference between the predicted temperature value of a gear and the target temperature value is the smallest, it means that the predicted temperature value corresponding to this gear is closest to the target temperature value, so this gear can be used as a cooker. The gear to be used in the next cycle. In this way, based on the relationship between the predicted temperature value of each gear of the cooker and the target temperature value, the gear to be used by the cooker in the next cycle after the current cycle is determined, so that the cooker can be accurately adjusted to be used in the next cycle. To keep the temperature of the cookware constant, ensure the accuracy of the temperature control of the cookware, and realize the precise temperature control of the cookware temperature.

As a possible implementation manner, as shown in FIG. 8 , in step S102, after determining that the absolute value of the difference between the real-time temperature value and the target temperature value is greater than or equal to the preset threshold, the information on how to determine each gear is determined. The predicted temperature value can be specifically implemented as the following steps:

S1021. Obtain the temperature value of the cookware at each time in the N time points included in the previous cycle of the current cycle.

Among them, N is a positive integer.

The memory of the cooker stores the temperature value of the cookware in each cycle during the heating process of the cooker. The controller can obtain the temperature of the cookware at each of the N moments included in the previous cycle before the current cycle through the memory. value. Exemplarily, it is assumed that N is 30, that is, the temperature values at each of the 30 moments included in the previous cycle are acquired.

S1022: Determine the predicted temperature value of the cookware in the current cycle according to the temperature values at each of the N moments included in the previous cycle of the current cycle.

After obtaining the temperature value of the cookware at each of the N moments included in the previous cycle before the current cycle, the temperature change of the previous cycle can be obtained according to the following formula (1):

Among them, ΔT is the temperature change in the previous cycle, N is the number of moments included in the previous period, i identifies the ith moment in the N moments, T _i is the temperature value at the ith moment, and a and f are both cookers A constant preset by the manufacturer.

The temperature offset of the previous cycle can be obtained according to the following formula (2):

Among them, ΔK is the temperature offset of the previous cycle, and b is a constant preset by the cooker manufacturer.

Furthermore, the predicted temperature value of the cooktop in the current cycle can be obtained by the following formula (3):

T _p =N×ΔT+ΔK+T _N formula (3)

Among them, T _p is the predicted temperature value of the cooker in the current cycle, and T _N is the temperature value of the cookware at the last moment of the N moments in the previous cycle.

S1023: Obtain a temperature correction factor according to the predicted temperature value and the real-time temperature value of the cookware in the current cycle.

The real-time temperature value of the cookware in the current cycle is obtained from the above step S101, and the predicted temperature value of the cookware in the current cycle is obtained from the above step S1022.

Optionally, the temperature correction factor may be obtained by subtracting the predicted temperature value of the pot in the current cycle from the real-time temperature value of the pot in the current cycle.

It is understandable that there will always be some deviation between the actual temperature value of the cookware and the predicted temperature value due to various reasons in the process of controlling the temperature of the cookware. The existence of a deviation indicates that the controller predicts the temperature value of the cookware. Not precise enough. In order to improve the accuracy of the controller's prediction of the temperature value of the cookware, it is necessary to continuously correct the predicted temperature value of the cookware. Therefore, the difference between the actual temperature value of the pot in the current cycle and the predicted temperature value can be used as the temperature correction factor, and the temperature correction factor can be applied to the prediction process of the temperature value of the pot in the next cycle after the current cycle. , to improve the accuracy of predicting the temperature value of the cookware, so that the controller can adjust the gear to be used by the cooker in the next cycle according to the accurate predicted temperature value of the cookware, thereby realizing precise control of the temperature of the cookware.

S1024: Determine the predicted temperature value of each gear according to the real-time temperature value, the temperature change speed of each gear of the cooker, and the temperature correction factor.

Each gear has a default temperature change rate that changes continuously as the cooktop heats the pan. The temperature change amount ΔT of the cooker in the last cycle is the temperature change speed corresponding to the gear used by the cooker in the last cycle.

The predicted temperature value of each gear can be determined according to the following formula (4):

T _q =V _q ×S+Δ Formula (4)

Among them, T _q is the predicted temperature value of the q-th gear, and V _q is the temperature change speed of the q-th gear. S is the cycle time, eg 3 seconds. Δ is the temperature correction factor.

Optionally, the predicted temperature value corresponding to each gear may be the temperature value that can be predicted by the cooker at the last moment in the next cycle after the current cycle when the cooker uses the gear.

The above embodiment focuses on that when the absolute value of the difference between the real-time temperature value of the cookware in the current cycle and the target temperature value is smaller than the preset threshold value, the controller controls the cooker to enter the fine-tuning mode, so as to realize the constant temperature of the cookware temperature. control situation. In some embodiments, if the absolute value of the difference between the real-time temperature value of the cookware in the current cycle and the target temperature value is greater than a preset threshold, as shown in FIG. 9 , the control method further includes the following steps:

S201. If the real-time temperature value of the cookware in the current cycle is greater than the target temperature value, and the difference between the real-time temperature value and the target temperature value is greater than a preset threshold, control the cooker to adjust the gear to the minimum gear.

It is understandable that if the real-time temperature value of the cookware in the current cycle is greater than the target temperature value, and the difference between the real-time temperature value and the target temperature value is greater than the preset threshold, it means that in the current cycle, the real-time temperature value of the cookware is not only The target temperature value set by the user is exceeded, and the exceeding range is large. In order to make the real-time temperature value of the cookware close to the target temperature value set by the user, the cooktop needs to be downshifted.

Optionally, the controller may control the cooker to adjust the gear to the minimum gear, for example, the P1 gear, so that the temperature value of the cookware is rapidly lowered to be close to the target temperature value.

Among them, causing the real-time temperature value of the cookware in the current cycle to be significantly higher than the target temperature value may include the following situations:

Scenario 1. As shown in Figure 10, in the process of cooking with the stove, the user needs to use high temperature (such as 210°C) to cook the ingredients at high temperature at a certain stage, and after cooking the ingredients at high temperature for a period of time, the user needs to The ingredients are cooked at room temperature (such as 100°C), so the user can choose to click the "-" function icon displayed on the display of the cooker to lower the target temperature value. This will cause the real-time temperature value of the cookware in the current cycle to be significantly higher than the target temperature value. For example, in the process of cooking, you can first choose a high-grade to fry with high heat, and then choose a low-grade to choose a low fire and simmer slowly.

Scenario 2. During the high-temperature cooking process of the ingredients with the cooker, the user touches the "-" function icon on the display of the cooker by mistake due to misoperation, which reduces the target temperature value. The actual temperature value is significantly higher than the target temperature value.

In some embodiments, when it is determined that the real-time temperature value of the cookware in the current cycle is greater than the target temperature value, and the difference between the real-time temperature value and the target temperature value is greater than a preset threshold, the controller may issue a first prompt message, In order to prompt the user that the real-time temperature value of the cookware is significantly higher than the target temperature value, the problem that the temperature of the cookware is rapidly lowered due to the user's false touch and affects the user's cooking experience can be avoided.

Exemplarily, the controller sending the first prompt information may adopt one or more of the following implementation manners:

Mode 1: The controller displays the first prompt information through the display.

Exemplarily, as shown in FIG. 11 , the content of the first prompt information displayed on the display may be “the temperature of the current cookware is high, and a downshift process will be performed”. Before receiving a confirmation operation from the user, the controller may control the display to keep the display of the first prompt information.

Mode 2: The controller plays the first prompt information through a voice prompt device.

Exemplarily, the content played by the voice prompting device may be "the temperature of the current cookware is high, and the downshift processing will be performed", wherein the sound of the voice prompting device playing the prompting information may be the sound preset by the manufacturer of the cooktop, It can also be various voice packages downloaded by the user for the cooktop through the Internet.

Optionally, after receiving the confirmation operation from the user, the controller may control the voice prompt device to stop playing the first prompt information.

S202. If the real-time temperature value of the cookware in the current cycle is less than the target temperature value, and the absolute value of the difference between the real-time temperature value and the target temperature value is greater than a preset threshold, control the cooker to adjust the gear to the maximum gear.

Understandably, if the real-time temperature value of the cookware in the current cycle is less than the target temperature value, and the difference between the real-time temperature value and the target temperature value is greater than the preset threshold, it means that in the current cycle, the real-time temperature value of the cookware is not only It is lower than the target temperature value set by the user, and the gap between the real-time temperature value and the target temperature value is large. In order to make the real-time temperature value of the cookware close to the target temperature value set by the user, the cooktop needs to be upshifted.

Optionally, the controller may control the cooker to adjust the gear to the maximum gear, such as the P8 gear, so that the temperature value of the cookware can be rapidly increased to be close to the target temperature value.

Among them, causing the real-time temperature value of the cookware in the current cycle to be significantly lower than the target temperature value may include the following situations:

Scenario 1. As shown in Figure 12, in the process of cooking with the stove, the user needs to use room temperature (such as 100°C) to cook the ingredients at room temperature at a certain stage, and after cooking the ingredients at room temperature for a period of time, the user needs to High temperature (such as 210°C) is used to cook ingredients at high temperature, so the user can choose to click the heating icon displayed on the display of the cooker to increase the target temperature value. This will cause the real-time temperature value of the cookware in the current cycle to be significantly lower than the target temperature value. For example, in the process of cooking, first choose a low-grade for slow frying, and finally choose a high-grade for high-fire to collect juice.

Scenario 2. When the user uses the cooker to cook the ingredients at room temperature, due to misoperation, he touches the "+" function icon on the display of the cooker by mistake, which increases the target temperature value, which causes the cookware to fail in the current cycle. The actual temperature value is significantly lower than the target temperature value.

In some embodiments, when it is determined that the real-time temperature value of the cookware in the current cycle is less than the target temperature value, and the difference between the real-time temperature value and the target temperature value is greater than a preset threshold, the controller may issue a second prompt message, In order to prompt the user that the real-time temperature value of the pot is significantly lower than the target temperature value, the problem that the temperature of the pot is rapidly increased due to the user's false touch and affects the user's cooking experience can be avoided.

Exemplarily, the controller sending the second prompt information may adopt one or more of the following implementation manners:

Mode 1: The controller displays the second prompt information through the display.

Exemplarily, as shown in FIG. 13 , the content of the second prompt information displayed on the display may be “the current temperature of the cookware is low, and an upshift process will be performed”. Before receiving the confirmation operation from the user, the controller may control the display to keep displaying the second prompt information.

Mode 2: The controller plays the second prompt information through the voice prompt device.

Exemplarily, the content played by the voice prompt device may be "the current temperature of the cookware is low, and the upshift process will be performed".

Optionally, after receiving the confirmation operation from the user, the controller may control the voice prompt device to stop playing the second prompt information.

Based on the embodiment shown in FIG. 9 , the controller controls the cooker to perform upshift processing or downshift processing according to the relationship between the real-time temperature value of the cookware in the current cycle and the target temperature value, so that the temperature value of the cookware is as fast as possible. Approaching the target temperature value, it is easy to control the cooker to enter the fine-tuning mode, which helps to achieve precise control of the temperature of the cookware.

In some embodiments, the method for controlling a cooktop provided by the embodiments of the present application can also be applied to a cooktop having a function of executing a smart recipe.

When the user uses the cooker with the function of executing smart recipes, after the user adds ingredients to the pot and selects the cookbook to be executed by the cooker, the cooker does not need to operate the cooker, and the cooker automatically executes the recipe selected by the user and cooks the ingredients. , until the ingredients are cooked, no user participation is required in the middle, which reduces the user's cooking difficulty and improves the user's cooking experience.

After receiving the instruction of setting the recipe from the user, the cooktop will cook the ingredients according to the cooking process indicated by the recipe in response to the instruction of setting the recipe by the user. When the cooker cooks the ingredients according to the cooking process indicated by the recipe, the ingredients may require different temperatures for cooking at different stages. Accurate temperature control in the middle of the pot realizes precise control of the temperature in the pot, thereby ensuring the cooking effect of the ingredients and helping to improve the user experience.

It can be seen that the solutions provided by the embodiments of the present application are mainly introduced from the perspective of the method above. In order to realize the above functions, the embodiments of the present application provide corresponding hardware structures and/or software modules for executing each function. Those skilled in the art should easily realize that, in conjunction with the modules and algorithm steps of each example described in the embodiments disclosed herein, the embodiments of the present application can be implemented in hardware or a combination of hardware and computer software. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of the present invention.

In this embodiment of the present application, the controller may be divided into functional modules according to the foregoing method examples. For example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules. Optionally, the division of modules in the embodiment of the present application is schematic, and is only a logical function division, and another division manner may be used in actual implementation.

An embodiment of the present application also provides a schematic diagram of a hardware structure of a controller. As shown in FIG. 14 , the controller 3000 includes a processor 3001 , and optionally, a memory 3002 connected to the processor 3001 and a communication interface 3003 . The processor 3001 , the memory 3002 and the communication interface 3003 are connected by a bus 3004 .

The processor 3001 may be a central processing unit (CPU), a general-purpose processor, a network processor (NP), a digital signal processing (DSP), a microprocessor, a microcontroller, a Programmable logic device (PLD) or any combination thereof. The processor 3001 may also be any other apparatus having processing functions, such as a circuit, a device or a software module. The processor 3001 may also include multiple CPUs, and the processor 3001 may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, or processing cores for processing data (eg, computer program instructions).

Memory 3002 may be read-only memory (ROM) or other type of static storage device that can store static information and instructions, random access memory (RAM), or other type of static storage device that can store information and instructions It can also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM), or other optical disk storage, optical disk storage ( including compact discs, laser discs, compact discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or capable of carrying or storing desired program code in the form of instructions or data structures and capable of being stored by a computer Any other medium taken, this embodiment of the present application does not impose any limitation on this. The memory 3002 may exist independently, or may be integrated with the processor 3001 . Wherein, the memory 3002 may contain computer program code. The processor 3001 is configured to execute the computer program code stored in the memory 3002, thereby implementing the control method provided by the embodiments of the present application.

The communication interface 3003 may be used to communicate with other devices or communication networks (eg, Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc.). Communication interface 3003 may be a module, circuit, transceiver, or any device capable of enabling communication.

The bus 3004 may be a peripheral component interconnect (PCI) bus, an extended industry standard architecture (EISA) bus, or the like. The bus 3004 can be divided into an address bus, a data bus, a control bus, and the like. For ease of presentation, only one thick line is shown in FIG. 14, but it does not mean that there is only one bus or one type of bus.

Embodiments of the present invention further provide a computer-readable storage medium, where the computer-readable storage medium includes computer-executable instructions, which, when the computer-executable instructions are run on the computer, cause the computer to execute the method provided by the foregoing embodiments.

Embodiments of the present invention also provide a computer program product, which can be directly loaded into a memory and contains software codes. After the computer program product is loaded and executed by a computer, the methods provided by the above embodiments can be implemented.

Those skilled in the art should appreciate that, in one or more of the above examples, the functions described in the present invention may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage medium can be any available medium that can be accessed by a general purpose or special purpose computer.

From the description of the above embodiments, those skilled in the art can clearly understand that for the convenience and brevity of the description, only the division of the above functional modules is used as an example for illustration. In practical applications, the above functions can be allocated as required. It is completed by different functional modules, that is, the internal structure of the device is divided into different functional modules, so as to complete all or part of the functions described above.

In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the modules or units is only a logical function division, and there may be other division manners in actual implementation. For example, multiple units or components may be combined or may be integrated into another device, or some features may be omitted, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms. Units described as separate components may or may not be physically separated, and components shown as units may be one physical unit or multiple physical units, that is, may be located in one place, or may be distributed in multiple different places. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units. The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application can be embodied in the form of software products in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, which are stored in a storage medium Among them, several instructions are included to cause a device (which may be a single-chip microcomputer, a chip, etc.) or a processor (processor) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes: a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk and other mediums that can store program codes.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this, and any changes or substitutions within the technical scope disclosed in the present application should be covered within the protection scope of the present application. . Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims (10)

1. A cooking utensil, characterized in that includes:

the temperature sensor is used for detecting the temperature value of the pot;

a controller connected to the temperature sensor, the controller configured to:

acquiring a real-time temperature value of the pot in a current period;

if the absolute value of the difference value between the real-time temperature value and the target temperature value is smaller than or equal to a preset threshold value, determining a predicted temperature value of each gear according to the real-time temperature value and the temperature change speed of each gear of the stove; the predicted temperature value of one gear is a temperature value which is predicted to be reached by the cooker when the cooker uses the gear in the next period of the current period;

and taking the gear corresponding to the minimum value in the absolute values of the difference values between the predicted temperature value and the target temperature value of each gear as the gear used by the cooker in the next period of the current period.

2. The hob according to claim 1, characterized in that the controller is configured to determine a predicted temperature value for each gear of the hob according to the real-time temperature value and a temperature change speed of each gear of the hob, in particular to perform the following steps:

and determining a predicted temperature value corresponding to each gear according to the real-time temperature value, the temperature change speed corresponding to each gear of the stove and the temperature correction factor.

3. The cooktop of claim 2, wherein the controller is further configured to:

acquiring temperature values of the cookware at each moment in N moments included in the last period of the current period, wherein N is a positive integer;

according to the temperature value of each moment in N moments included in the last period of the current period, determining the predicted temperature value of the pot in the current period;

and obtaining the temperature correction factor according to the predicted temperature value and the real-time temperature value of the pot in the current period.

4. The hob according to claim 3, wherein the controller is configured to derive the temperature correction factor according to the predicted temperature value and the real-time temperature value of the pot in the current period, and specifically perform the following steps:

and subtracting the predicted temperature value of the pot in the current period from the real-time temperature value to obtain the temperature correction factor.

5. The hob according to claim 3, characterized in that the controller is configured to determine the predicted temperature value of the pot in the current cycle from the temperature values at each of the N moments included in the previous cycle, in particular to perform the following steps:

according to the formula

Determining the temperature variation delta T of the previous period of the current period, wherein N is the number of moments included in the previous period of the current period, i is the ith moment in the N moments, and T_iA and f are constant values of the temperature at the moment i;

according to the formula

Determining the temperature offset delta K of the previous period of the current period, wherein b is a constant;

according to the formula T_p＝N×ΔT+ΔK+T_NDetermining the predicted temperature value T of the pot in the current period_pWherein, T_NThe temperature value is the temperature value at the last moment in the last period of the current period.

6. The cooktop of any of claims 1 to 4, wherein the controller is further configured to:

if the real-time temperature value of the cookware in the current period is greater than the target temperature value, and the absolute value of the difference between the real-time temperature value and the target temperature value is greater than the preset threshold value, controlling the cooker to adjust the gear to the minimum gear; or,

and if the real-time temperature value is smaller than the target temperature value and the absolute value of the difference between the real-time temperature value and the target temperature value is larger than the preset threshold value, controlling the stove to adjust the gear to the maximum gear.

7. A control method of a cooker is characterized by comprising the following steps:

acquiring a real-time temperature value of the pot in the current period;

if the absolute value of the difference value between the real-time temperature value and the target temperature value is smaller than or equal to a preset threshold value, determining a predicted temperature value of each gear according to the real-time temperature value and the temperature change speed of each gear of the stove; the predicted temperature value of one gear is the temperature value which is predicted to be reached by the cooker when the cooker uses the gear in the next period of the current period;

and taking the gear corresponding to the minimum value in the absolute values of the difference values between the predicted temperature value and the target temperature value of each gear as the gear used by the cooker in the next period of the current period.

8. The method of claim 7, wherein determining the predicted temperature value for each gear of the range from the real-time temperature value and the speed of temperature change for each gear of the range comprises:

and determining a predicted temperature value corresponding to each gear according to the real-time temperature value, the temperature change speed corresponding to each gear of the stove and the temperature correction factor.

9. The method of claim 8, further comprising:

acquiring temperature values of the cookware at each moment in N moments included in the last period of the current period, wherein N is a positive integer;

according to the temperature value of each moment in the N moments included in the last period, determining the predicted temperature value of the pot in the current period;

and obtaining the temperature correction factor according to the predicted temperature value and the real-time temperature value of the pot in the current period.

10. The method of claim 9, wherein obtaining the temperature correction factor according to the predicted temperature value and the real-time temperature value of the pot in the current period comprises:

and subtracting the predicted temperature value of the pot in the current period from the real-time temperature value to obtain the temperature correction factor.

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