Overheat protection method, controller and electromagnetic oven

Abstract

The application provides an overheating protection method, a controller and an electromagnetic oven. The method comprises the following steps: the controller can acquire a current temperature from a temperature sensor in real time when a heating function of the electromagnetic oven is turned on. The controller can compare the current temperature with a preset temperature in real time. If the current temperature is greater than or equal to the preset temperature, the controller can control a heating device of the electromagnetic oven to stop heating. Otherwise, the controller can acquire an ascending speed of the current temperature in a current period. If the ascending speed of the current temperature in the current period is greater than or equal to a preset threshold, the controller can control the heating device to stop heating. The method provided by the application improves the safety of the electromagnetic oven.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electronic appliances, and in particular, to an overheating protection method, a controller and an induction cooker. BACKGROUND

[0002] With the continuous development of technology, the functions of kitchen appliances are becoming more and more comprehensive. Induction cookers are particularly popular with consumers due to their numerous cooking functions.

[0003] In the prior art, the upper surface of an induction cooker is usually provided with a layer of high borosilicate glass panel. In the heating area of the induction cooker, the heat generated by the heating device is conducted to the pot through the layer of high borosilicate glass panel. In the control area of the induction cooker, the touch signals generated by the user's touch are conducted to the buttons through the layer of high borosilicate glass panel.

[0004] However, the high borosilicate glass panel has a low temperature resistance and is prone to burst at a high temperature, which has a low safety problem. SUMMARY

[0005] The present application provides an overheating protection method, a controller and an induction cooker to solve the problem that the high borosilicate glass panel has a low temperature resistance and is prone to burst at a high temperature.

[0006] In a first aspect, the present application provides an overheating protection method, comprising:

[0007] obtaining a current temperature of a temperature sensor in real time;

[0008] stopping heating when the current temperature is greater than or equal to a preset temperature;

[0009] Otherwise, stopping heating when an ascending speed of the current temperature in a current period is greater than or equal to a preset threshold.

[0010] Optionally, the stopping heating when the ascending speed of the current temperature in the current period is greater than or equal to the preset threshold specifically comprises:

[0011] obtaining a first temperature at a first time and a second temperature at a second time of the current period, the second time being after the first time;

[0012] stopping heating and entering a next period when a difference between the second temperature and the first temperature is greater than or equal to the preset threshold.

[0013] Optionally, the method further comprises:

[0014] continuing heating until the current period ends when the difference between the second temperature and the first temperature is less than the preset threshold.

[0015] Optionally, the preset threshold is determined according to the current temperature and a preset temperature.

[0016] Optionally, the method further comprises:

[0017] When the current temperature is greater than or equal to half of the preset temperature, the preset threshold is determined as a first threshold; otherwise, the preset threshold is determined as a second threshold.

[0018] Optionally, the first time point is a start time point of the current period, and the second time point is a time point after a preset time length entering the current period, wherein the preset time length is less than a cycle time length of the current period.

[0019] Optionally, the method further comprises:

[0020] Each function of the induction cooker is used for heating, and a highest measured temperature of each function is measured when a high borosilicate glass panel reaches a highest temperature resistance;

[0021] According to a preset highest temperature of each function and the highest measured temperature, a preset temperature of each function of the induction cooker is determined.

[0022] In a second aspect, the application provides a controller, a memory and a processor; the memory is used for storing a computer program; the processor is used for executing the heating control method in the first aspect and any possible design of the first aspect according to the computer program stored in the memory.

[0023] In a third aspect, the application provides an induction cooker, which is provided with a high borosilicate glass panel, a temperature sensor and a controller, and the temperature sensor is arranged in the high borosilicate glass panel.

[0024] Optionally, the temperature sensor is arranged inside the high borosilicate glass panel and does not directly contact an upper surface of the high borosilicate glass panel.

[0025] The overheat protection method, the controller and the induction cooker provided by the application realize flexible judgment of the temperature of the high borosilicate glass panel by acquiring the current temperature from the temperature sensor in real time when the heating function of the induction cooker is turned on, comparing the current temperature with a preset temperature in real time, controlling the heating device of the induction cooker to stop heating if the current temperature is greater than or equal to the preset temperature, and acquiring the rising speed of the current temperature in the current period if the current temperature is less than the preset temperature; the rising speed of the current temperature in the current period is greater than or equal to a preset threshold, and the heating device is controlled to stop heating, which reduces the possibility of the high borosilicate glass panel reaching the highest temperature resistance and improves the safety and use experience of the induction cooker. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort under the premise of the drawings.

[0027] Figure 1 A use scene schematic diagram of an induction cooker provided by an embodiment of the application is provided.

[0028] Figure 2 A flowchart of an overheat protection method provided by an embodiment of the application is provided.

[0029] Figure 3 A flowchart of an overheat protection method implementation provided by an embodiment of the application is provided.

[0030] Figure 4 A hardware structure schematic diagram of a controller provided by an embodiment of the application is provided.

[0031] Figure 5 A structure schematic diagram of an induction cooker provided by an embodiment of the application is provided. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the application clearer, the technical solutions in the application will be described clearly and completely in the following with reference to the drawings in the application. Obviously, the described embodiments are some embodiments of the application, but not all the embodiments. Based on the embodiments in the application, all the other embodiments obtained by those skilled in the art without creative effort belong to the protection scope of the application.

[0033] The terms “first”, “second”, “third”, “fourth” and the like in the specification of the application and claims and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be exchanged under appropriate circumstances. For example, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information without departing from the scope herein.

[0034] Depending on the context, the word “if” as used herein can be interpreted to mean “when” or “in response to determining” or “in response to ascertaining”.

[0035] Furthermore, as used in this text, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0036] It is further understood that the terms "including", "includes" and "comprising" and variations thereof, mean that the specified features, steps, operations, elements, components, items, categories, and / or groups are included, but not to the exclusion of one or more other features, steps, operations, elements, components, items, categories, and / or groups.

[0037] The terms "or" and "and / or" as used herein are to be interpreted as inclusive, i.e., as meaning one or any combination of the listed items. Thus, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C." An exception to this definition will occur only when a combination of elements, functions, steps or acts are in some way inherently mutually exclusive.

[0038] With the continuous development of technology, the functions of kitchen appliances are becoming more and more comprehensive. Induction cookers are particularly popular with consumers due to their numerous cooking functions. Currently, the upper surface of an induction cooker is usually provided with a layer of high borosilicate glass panel. The high borosilicate glass panel is particularly popular with consumers due to its beautiful appearance and low cost. In the heating area of the induction cooker, the heat generated by the heating device is conducted to the pot through the layer of high borosilicate glass panel. In the control area of the induction cooker, the touch signals generated by the user's touch are conducted to the buttons through the layer of high borosilicate glass panel. However, the maximum temperature resistance of the high borosilicate glass panel is lower than that of the previously commonly used microcrystalline glass panel. Therefore, compared with the microcrystalline glass panel, the high borosilicate glass panel is more likely to exceed the maximum temperature, thereby causing the high borosilicate glass panel to burst. In the induction cooker, the temperature sensor is usually arranged inside the high borosilicate glass panel. That is, during use of the induction cooker, the temperature sensor is not in direct contact with the pot placed on the surface of the induction cooker. Therefore, during use of the induction cooker, the heating device of the induction cooker conducts the temperature to the pot through the high borosilicate glass panel. After the pot is heated, the temperature is conducted downward to the temperature sensor through the high borosilicate glass panel. It should be noted that the temperature of the pot rises very quickly during the dry burning or hot oil stage. However, the heat conduction of the high borosilicate glass panel has a lag. That is, the temperature detected by the temperature sensor is usually much lower than the temperature on the surface of the high borosilicate glass panel. Therefore, when the controller detects that the temperature of the temperature sensor exceeds the maximum temperature resistance of the high borosilicate glass panel, the actual temperature on the upper surface of the high borosilicate glass panel has already been much higher than the maximum temperature resistance of the high borosilicate glass panel. That is, the high borosilicate glass panel may have burst when the controller does not detect the temperature anomaly through the temperature sensor.

[0039] To solve the above problems, the application provides a kind of overheating protection method.The application can test the highest temperature Temp_Max measured by temperature sensor when high borosilicate glass panel reaches the highest temperature resistance Panel_Temp_Max.Controller can set the highest temperature Fun_Temp_Max of all functions of the induction cooker in the program according to the Temp_Max.The controller can obtain the current temperature Curr_Temp of the induction cooker in real time through the temperature sensor during the use of the induction cooker.When Curr_Temp is greater than the highest temperature Fun_Temp_Max of the current function, the controller can control the heating device to stop heating.In addition, the controller can also detect the rising speed of Curr_Temp in real time when the heating function of the induction cooker is turned on.If the rising speed is too fast, the controller can pause the heating for a period of time and then restart the heating, so that the temperature of high borosilicate glass panel can be guaranteed not to exceed the highest temperature resistance temperature during the whole working process of the induction cooker.

[0040] The technical solutions of the application will be described in detail below with specific examples.The following specific examples can be combined with each other, and the same or similar concepts or processes may not be described in detail in some examples.

[0041] Figure 1 A use scenario of an induction cooker is shown in an embodiment of the application.As shown in the figure, the upper surface of the induction cooker is provided with a high borosilicate glass panel.The upper area of the high borosilicate glass panel is a heating area.When the user places a pot on the heating area, the pot can be heated.The lower area of the induction cooker is a control area.The control area is provided with a display screen and a plurality of buttons.The user can turn on / off the induction cooker, select functions, etc.through the buttons.The user can view the current function, heating power, etc.through the display screen. Figure 1 In the application, the controller of the induction cooker is the execution subject, and the heating control method of the following embodiments is executed.The execution subject can be the hardware device of the controller, or the software application for implementing the following embodiments in the controller, or the computer readable storage medium installed with the software application for implementing the following embodiments, or the code of the software application for implementing the following embodiments.

[0042]

[0043] A flow chart of an overheating protection method is shown in an embodiment of the application.Based on the embodiment shown in the figure, as shown in the figure, the method of the embodiment can include the following steps: Figure 2 Figure 1 Figure 2 The method of the embodiment can include the following steps based on the controller as the execution subject:

[0044] ​​S101, acquire a current temperature of the temperature sensor in real time.

[0045] In this embodiment, the controller can acquire the current temperature from the temperature sensor in real time when the induction cooker is in use. Alternatively, the controller can acquire the current temperature from the temperature sensor in real time when the heating function of the induction cooker is turned on.

[0046] S102, stop heating when the current temperature is greater than or equal to the preset temperature.

[0047] In this embodiment, the preset temperature can be stored in the controller. The preset temperature can be a global value set in the controller. Alternatively, the preset temperature can also be a temperature value determined according to the current function used by the induction cooker. The controller can compare the current temperature and the preset temperature in real time. If the current temperature is greater than or equal to the preset temperature, it means that the temperature of the high borosilicate glass panel on the surface of the induction cooker can reach the maximum temperature resistance. Therefore, when the current temperature is greater than or equal to the preset temperature, the controller can control the heating device of the induction cooker to stop heating.

[0048] In an example, the preset temperature can be obtained by the following steps:

[0049] Step 1, use each function of the induction cooker to heat, and measure the highest measured temperature of each function when the high borosilicate glass panel reaches the maximum temperature resistance.

[0050] In this step, the controller can use each function of the induction cooker to heat the induction cooker in an experimental environment. The controller can record the measured temperature measured when the high borosilicate glass panel reaches the maximum temperature resistance when each function is used. The controller can take the maximum value of the measured temperature of each function as the highest measured temperature. Alternatively, for each function, the controller can take the maximum value of multiple measurements as the measured temperature corresponding to the function after multiple measurements. Alternatively, the temperature sensor can be an NTC sensor.

[0051] Step 2, determine the preset temperature of each function of the induction cooker according to the preset highest temperature and the highest measured temperature of each function.

[0052] In this step, the controller can obtain the highest preset temperature of each function. That is, the heating temperature that can be reached by using the function in normal circumstances. For example, in the stewing mode, the preset highest temperature is usually 100 degrees Celsius. The controller can determine the preset temperature of each function according to the preset highest temperature and the highest measured temperature of each function. The preset temperature is usually a value lower than the highest measured temperature. For example, when the highest measured temperature is 300 degrees Celsius, if the preset highest temperature is 100 degrees Celsius, the preset temperature can be 100 degrees Celsius. For another example, when the highest measured temperature is 300 degrees Celsius, if the preset highest temperature is 350 degrees Celsius, the preset temperature can be 300 degrees Celsius or other temperature values less than 300 degrees Celsius.

[0053] For example, the highest temperature resistance Panel_Temp_Max of the high borosilicate glass panel is the material temperature, which is usually 380 degrees Celsius. Due to production differences, the highest temperature resistance of different high borosilicate glass panels can be slightly different, and is usually fixed in the range of 350℃<=Panel_Temp_Max<=420℃. When the high borosilicate glass panel is heated to the highest temperature resistance, due to different heating powers and different heating speeds of different functions, the heat conducted by the high borosilicate glass panel is different. That is, the highest measured temperature Temp_Max obtained by measurement can be different. The highest measured temperature is in the range of 200℃<=Temp_Max<=300℃. When the controller sets the preset temperature of each function according to the highest measured temperature, the preset temperatures of different functions can be different, but the preset temperatures of different functions must be less than the highest measured temperature. Usually, the optimal value range of the preset temperature can be 200℃<=Fun_Temp_Max<=230℃.

[0054] It should be noted that the preset temperature of each function is laboratory data. When each induction cooker is shipped, the preset temperature of each function is usually preset in the controller.

[0055] S103, otherwise, when the rising speed of the current temperature in the current period is greater than or equal to the preset threshold, stop heating.

[0056] In this embodiment, the controller can preset a period length. The period length can be set according to experience. For example, the period length of the period can be 4s. The controller can obtain the rising speed of the current temperature in the current period. The controller can store a preset threshold. The controller can compare the rising speed and the preset threshold. If the rising speed of the current temperature in the current period is greater than or equal to the preset threshold, the controller can control the heating device to stop heating.

[0057] In an example, the rising speed can be determined according to the temperature difference. The controller can obtain a first temperature at a first time and a second temperature at a second time in a current period. The controller can determine the rising speed according to the difference between the first temperature and the second temperature. For example, the rising speed can be 7 degrees Celsius. When the preset threshold can be 4, the rising speed is greater than the preset threshold, the controller needs to control the heating device to stop heating.

[0058] Optionally, the first time can be the start time of the current period. The second time can be the end time of the current period. That is, the controller can stop heating when determining that the temperature of the current period rises too fast. The controller can continue to periodically obtain the first temperature at the start time and the second temperature at the end time after stopping heating until the temperature difference between the first temperature and the second temperature is less than the preset threshold. When the temperature difference is less than the preset threshold, the controller can control the heating device to continue heating in the next period.

[0059] Optionally, the first time can be the start time of the current period. The second time can be a time in the current period. There is a fixed preset time length between the first time and the second time. The preset time length is less than the period length. For example, when the period length is 4s, the preset time length can be 3s. That is, the controller can obtain the first temperature at 0s and the second temperature at 3s in the current period. That is, the controller can stop heating when determining that the temperature of the current period rises too fast. The controller can end the current period at the second time and enter the next period while stopping heating. The controller can continue to obtain the first temperature at the first time and the second temperature at the second time in the next period and calculate the temperature difference. The controller can continue to end the period and enter the next period when the temperature difference is greater than or equal to the preset threshold. The controller can also continue to heat until the end of the current period when the temperature difference is less than the preset threshold. For example, the controller obtains the second temperature at 3s in the current period and determines that the temperature difference between the first temperature and the second temperature is less than the preset threshold, the controller controls the heating device to continue heating until 4s. When reaching 4s, the current period ends and enters the next period. The controller can continue to obtain the first temperature at the first time and the second temperature at the second time in the next period.

[0060] Optionally, the preset threshold can be determined according to the current temperature and the preset temperature. The specific steps can include:

[0061] When the current temperature is greater than or equal to half of the preset temperature, the controller can determine the preset threshold as a first threshold. Otherwise, when the current temperature is greater than or equal to half of the preset temperature, the controller can determine the preset threshold as a second threshold. Wherein, the first threshold and the second threshold can be set according to empirical values. For example, the first threshold can be 4 and the second threshold can be 6.

[0062] In another example, the rising speed can be determined according to a ratio of a temperature difference and an interval time. For example, the controller can obtain a third temperature at a third time and a fourth temperature at a fourth time in a current period. The third time is earlier than the fourth time, and both the third time and the fourth time are in the current period. The controller can determine a temperature difference according to the third temperature and the fourth temperature. The controller can determine a time difference according to the third time and the fourth time. The controller can determine the rising speed according to a ratio of the temperature difference and the time difference. The rising speed can be 7 / 3 Celsius degree / s. When the preset threshold can be 4 / 3 Celsius degree / s, the rising speed is greater than the preset threshold. Then the controller needs to control the heating device to stop heating.

[0063] It should be noted that in the embodiment, when the difference between two values is needed to be calculated, the larger value is subtracted by the smaller value. The difference is a positive number greater than or equal to 0.

[0064] The overheat protection method provided in the application, the controller can obtain the current temperature from the temperature sensor in real time when the heating function of the induction cooker is turned on. The controller can compare the current temperature with the preset temperature in real time. If the current temperature is greater than or equal to the preset temperature, the controller can control the heating device of the induction cooker to stop heating. Otherwise, the controller can obtain the rising speed of the current temperature in the current period. If the rising speed of the current temperature in the current period is greater than or equal to the preset threshold, the controller can control the heating device to stop heating. In the application, by obtaining and comparing the current temperature and the rising speed of the current temperature in the current period, flexible judgment of the temperature of the high borosilicate glass panel is realized, the possibility of the high borosilicate glass panel reaching the highest temperature resistance is reduced, and the safety and use experience of the induction cooker are improved.

[0065] Based on the above embodiments, as Figure 3 A flow chart of an implementation of an overheat protection method provided in an embodiment of the application is shown. The implementation can include the following steps as the controller is the execution subject:

[0066] S201, the user selects a target function in the induction cooker, and the induction cooker starts heating.

[0067] S202, the controller obtains the current temperature Curr_Temp through the temperature sensor. The controller can determine the preset temperature Fun_Temp_Max corresponding to the target function according to the target function. When the current temperature Curr_Temp is greater than or equal to the preset temperature Fun_Temp_Max, the controller can jump to step S207. Otherwise, the controller can continue to execute S203.

[0068] S203, the controller continues to compare the current temperature Curr_Temp with half of the preset temperature Fun_Temp_Max. When Curr_Temp < Fun_Temp_Max / 2, the controller can perform step S205. Otherwise, the controller can perform step S204.

[0069] S204, the controller can obtain a first temperature before the start of the current period. The controller can obtain the current temperature Curr_Temp at the second time of the current period. When the difference between the current temperature Curr_Temp and the first temperature is greater than or equal to the first threshold value, Curr_Temp >= Last_Temp+4, step S207 is performed. Otherwise, step S206 is performed.

[0070] S205, the controller can obtain a first temperature before the start of the current period. The controller can obtain the current temperature Curr_Temp at the second time of the current period. When the difference between the current temperature Curr_Temp and the first temperature is greater than or equal to the second threshold value, Curr_Temp >= Last_Temp+6, step S207 is performed. Otherwise, step S206 is performed.

[0071] S206, the controller continues to heat.

[0072] S207, the controller suspends heating.

[0073] Figure 4 A hardware structure schematic diagram of a controller provided by an embodiment of the application is shown. As shown in the figure, the controller 10 is used to implement the operations corresponding to the controller in any of the above method embodiments. The controller 10 of the embodiment can include a memory 11, a processor 12 and a communication interface 14. Figure 4

[0074] The memory 11 is used to store a computer program. The memory 11 can include a high-speed random access memory (RAM), and can also include a non-volatile memory (NVM), such as at least one disk memory, and can also be a U disk, a mobile hard disk, a read-only memory, a magnetic disk or an optical disk, etc.

[0075] ​The processor 12 is configured to execute the computer program stored in the memory to implement the heating control method in the above embodiments. Details can be referred to the description of the above method embodiments. The processor 12 can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor and the like. The steps of the method disclosed in the application can be directly embodied as hardware processor execution, or executed by a combination of hardware and software modules in the processor.

[0076] Optionally, the memory 11 can be independent or integrated with the processor 12.

[0077] When the memory 11 is a device independent of the processor 12, the controller 10 can further include a bus 13. The bus 13 is configured to connect the memory 11 and the processor 12. The bus 13 can be an industry standard architecture (ISA) bus, a peripheral component interconnect (PCI) bus, an extended industry standard architecture (EISA) bus, or the like. The bus can be divided into an address bus, a data bus, a control bus, and the like. For the convenience of representation, the bus in the drawings of the present application does not limit to only one bus or one type of bus.

[0078] The communication interface 14 can be connected with the processor 11 through the bus 13. The processor 12 can control the communication interface 14. The communication interface 14 can be configured to realize communication with the temperature sensor, the heating device and the like in the induction cooker.

[0079] The controller provided in the embodiment can be used to execute the heating control method described above, and the implementation manner and technical effects are similar, which will not be described here again.

[0080] The present application also provides a computer readable storage medium, and the computer readable storage medium stores a computer program. The computer program is configured to be executed by the processor to implement the method provided in the various embodiments.

[0081] The computer readable storage medium can be a computer storage medium or a communication medium. The communication medium includes 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. By way of example, and not limitation, computer readable storage media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired computer program code means in the form of computer readable instructions or data structures and that can be accessed by a general-purpose or special-purpose computer, or a combination thereof. It should be understood that computer readable storage media and data storage media do not include carrier waves and / or other propagating / transitory

[0082] In particular, the computer readable storage medium can be realized by any type of volatile or non-volatile storage devices, 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 or optical disks. The storage medium can be any available medium that can be accessed by a general or special purpose computer.

[0083] The present application also provides a computer program product, which includes a computer program stored in a computer readable storage medium. At least one processor of a device can read the computer program from the computer readable storage medium, and the at least one processor executes the computer program to enable the device to implement the method provided by the various embodiments described above.

[0084] Figure 5 A structural schematic diagram of an electromagnetic oven is shown, as shown in the figure, the electromagnetic oven 20 of the embodiment is used to implement the operation in any of the method embodiments described above, the electromagnetic oven 20 of the embodiment is provided with a high borosilicate glass panel 21, a temperature sensor 22, a heating device 23 and a temperature display 24, etc. Figure 5 Figure 4 ​The controller 24 is shown. In one example, the temperature sensor 22 is disposed within the high borosilicate glass faceplate 21 a distance from the upper surface of the high borosilicate glass faceplate 21. For example, the temperature sensor 22 can be 5 mm from the upper surface of the high borosilicate glass faceplate 21.

[0085] In several embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented by other manners. For example, the apparatus embodiments described above are only illustrative, for example, the division of the modules is only a logical function division, and actual implementation can have another division manner, for example, a plurality of modules can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the displayed or discussed modules can be indirect coupling or communication connection between the modules through some interfaces, devices or modules, which can be electrical, mechanical or other forms.

[0086] Among them, each module can be physically separated, for example, installed at different positions of one device, or installed on different devices, or distributed to multiple network elements, or distributed to multiple processors. Each module can also be integrated together, for example, installed in the same device, or integrated in a set of codes. Each module can exist in the form of hardware, or can exist in the form of software, or can be realized in the form of software plus hardware. The present application can select part or all of the modules to achieve the purpose of the embodiment scheme according to actual needs.

[0087] When each module is realized in the form of an integrated module of a software function module, the integrated module can be stored in a computer readable storage medium. The above software function module stored in a storage medium includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute part of the steps of the method of each embodiment of the present application.

[0088] It should be understood that although each step in the flowchart in the above embodiment is shown in sequence according to the arrow, these steps are not necessarily executed in sequence according to the arrow. Unless otherwise stated herein, the execution of these steps has no strict sequence limitation, and they can be executed in other orders. Moreover, at least part of the steps in the figure can include a plurality of sub-steps or a plurality of stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution order is not necessarily sequential, but can be executed alternately or alternately with at least part of other steps or other steps or stages.

[0089] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part or all of the technical features. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An overheat protection method, characterized by, The method comprises: acquiring a current temperature of the temperature sensor in real time; stopping heating when the current temperature is greater than or equal to a preset temperature; otherwise, acquiring a first temperature at a first time point of a current period and a second temperature at a second time point, the second time point being after the first time point; stopping heating and entering a next period when a difference between the second temperature and the first temperature is greater than or equal to a preset threshold value; The method further comprises: using each function of the induction cooker to heat, and measuring a highest measured temperature of each function when the high borosilicate glass panel reaches a highest temperature resistance; determining a preset temperature of each function of the induction cooker according to a preset highest temperature of each function and the highest measured temperature.

2. The method of claim 1, wherein, The method further comprises: continuing heating until the current period ends when the difference between the second temperature and the first temperature is less than the preset threshold value.

3. The method according to claim 1 or 2, characterized in that, The preset threshold value is determined according to the current temperature and a preset temperature.

4. The method of claim 3, wherein, The method further comprises: determining the preset threshold value as a first threshold value when the current temperature is greater than or equal to half of the preset temperature; otherwise, determining the preset threshold value as a second threshold value.

5. The method according to claim 1 or 2, characterized in that, The first time point is a starting time point of the current period, and the second time point is a time point after a preset time length of entering the current period, wherein the preset time length is less than a period length of the current period.

6. A controller characterized by comprising: The controller comprises a memory and a processor; the memory is used to store a computer program; and the processor is used to realize the overheat protection method according to the computer program stored in the memory.

7. An electromagnetic oven, characterized by The induction cooker is provided with a high borosilicate glass panel, a temperature sensor, a heating device, and the controller according to claim 6.

8. The electromagnetic stove according to claim 7, characterized in that, The temperature sensor is arranged inside the high borosilicate glass panel and does not directly contact an upper surface of the high borosilicate glass panel.

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