Temperature control method, device and equipment for steaming oven and storage medium

Abstract

The invention belongs to the technical field of steaming oven control, and particularly relates to a temperature control method, device and equipment of a steaming oven and a storage medium, the method comprises the following steps: when the steaming oven executes a cooking task, obtaining a first temperature in the steaming oven, and determining an operation state of the steaming oven based on the first temperature; when the operation state is a first operation state, determining a first temperature difference between the first temperature and a target temperature corresponding to the cooking task; under the condition that the first temperature difference is smaller than a second temperature parameter, temperature control processing is carried out on the steaming and baking oven according to a first temperature control strategy, a second temperature obtained after temperature control processing is carried out for a first preset duration is obtained, and the first temperature control strategy is used for indicating that temperature control processing is carried out on the temperature in the steaming and baking oven through PID control; and based on the second temperature, a temperature control strategy of the steaming oven is adjusted. The problem that the food cooking effect is affected due to the fact that the steaming oven independently uses PID temperature control and cannot accurately recognize a scene for accurate temperature control is solved.

Description

Technical Field

[0001] This application belongs to the technical field of steam oven control, and particularly relates to a temperature control method, device, equipment and storage medium for a steam oven. Background Art

[0002] During the use of a steam oven, it is necessary to control the temperature. Different foods require different temperatures to achieve the best cooking effect. However, every time the steam oven door is opened, the internal temperature will drop rapidly, which will affect the cooking effect of the food and may also lead to inaccurate temperature control. In addition, when ingredients are placed in the steam oven during operation, the temperature of the ingredients themselves will also affect the temperature control effect.

[0003] Currently, the temperature control system of steam ovens usually uses "Proportional-Integral-Derivative Control" (hereinafter simply referred to as "PID") to more accurately control the temperature of the steam oven.

[0004] Regarding the above-mentioned existing steam ovens that simply use PID for temperature control, they cannot effectively control the scenarios during user use. For example, when the user simply opens the door to check during cooking, although the sensed temperature decreases, the load inside the oven does not change much. At this time, if a high-power output is given, it will cause temperature oscillation inside the oven; on the other hand, after the machine has just completed preheating, the sensor temperature is relatively high. At this time, when food is placed, the temperature drop of the sensor is small, but at this time the load of the oven is large and a rapid increase in power output is required for cooking. If only conventional PID control is used, it will also cause temperature oscillation inside the oven and affect the cooking effect of the food. Summary of the Invention

[0005] This application provides a temperature control method, device, equipment and storage medium for a steam oven to solve the problem in the prior art that using PID alone for temperature control in a steam oven results in inaccurate temperature control and thus affects the cooking effect of food.

[0006] In a first aspect, this application provides a temperature control method for a steam oven, including:

[0007] When the steam oven executes a cooking task, obtain the first temperature inside the steam oven and determine the operating state of the steam oven based on the first temperature;

[0008] In the case where the operating state is a first operating state, determine a first temperature difference between the first temperature and a target temperature corresponding to the cooking task, where the first operating state is used to indicate that the difference between the first temperature and the target temperature inside the steam oven is less than a first temperature parameter;

[0009] When the first temperature difference is less than the second temperature parameter, perform temperature control processing on the steam oven according to the first temperature control strategy, and obtain the second temperature after executing the temperature control processing for the first preset duration, where the first temperature control strategy is used to indicate performing temperature control processing on the temperature inside the steam oven through PID control;

[0010] Based on the second temperature, perform adjustment processing on the temperature control strategy of the steam oven.

[0011] In a possible design, the performing adjustment processing on the temperature control strategy of the steam oven based on the second temperature includes:

[0012] Determine the first temperature rise value of the second temperature relative to the first temperature, and determine whether the first temperature rise value is not less than the third temperature parameter;

[0013] When the first temperature rise value is less than the third temperature parameter, within the second preset duration, keep the temperature control strategy of the steam oven as the first temperature control strategy, and obtain the third temperature after executing the temperature control processing for the second preset duration;

[0014] Based on the third temperature, perform adjustment processing on the temperature control strategy of the steam oven.

[0015] In a possible design, the performing adjustment processing on the temperature control strategy of the steam oven based on the third temperature includes:

[0016] Determine the second temperature rise value of the third temperature relative to the second temperature, and determine whether the second temperature rise value is not less than the fourth temperature parameter;

[0017] When the second temperature rise value is less than the fourth temperature parameter, adjust the temperature control strategy of the steam oven to the second temperature control strategy, where the second temperature control strategy is used to indicate performing temperature control processing on the steam oven through the food cooking curve corresponding to the cooking task.

[0018] In a possible design, the method further includes:

[0019] When the operating state is the second operating state, perform temperature control processing on the steam oven according to the third temperature control strategy, where the second operating state is used to indicate that the difference between the first temperature and the target temperature inside the steam oven is not less than the first temperature parameter, and the third temperature control strategy is used to indicate performing heating processing on the inside of the steam oven according to the first preset power;

[0020] Obtain the fourth temperature after executing the temperature control processing for the third preset duration, and based on the fourth temperature, adjust the temperature control strategy of the steam oven.

[0021] In a possible design, determining the temperature control strategy of the steam oven based on the fourth temperature includes:

[0022] Determine a third temperature rise value of the fourth temperature relative to the first temperature, and determine whether the third temperature rise value is not less than a fourth temperature parameter;

[0023] When the third temperature rise value is not less than the fourth temperature parameter, adjust the temperature control strategy of the steam oven to a fourth temperature control strategy, where the fourth temperature control strategy is used to indicate heating the interior of the steam oven at a second preset power, and the second preset power is higher than the first preset power;

[0024] When the third temperature rise value is less than the fourth temperature parameter, adjust the temperature control strategy of the steam oven to a second temperature control strategy.

[0025] In a possible design, the method further includes:

[0026] When the first temperature difference is not less than a second temperature parameter, control the convection fan of the steam oven to operate according to a target strategy, where the target strategy is used to indicate that the convection fan is turned on after a fourth preset duration;

[0027] After the fourth preset duration, obtain the fourth temperature in the steam oven, and determine the temperature control strategy of the steam oven based on the fourth temperature.

[0028] In a possible design, determining the temperature control strategy of the steam oven based on the fourth temperature includes:

[0029] Determine a fourth temperature rise value of the fourth temperature relative to the first temperature, and determine whether the fourth temperature rise value is not greater than zero;

[0030] When the fourth temperature rise value is greater than zero, determine to perform temperature control on the steam oven according to the first temperature control strategy;

[0031] When the fourth temperature rise value is not greater than zero, determine to perform temperature control on the steam oven according to the second temperature control strategy.

[0032] In a second aspect, the present application provides a temperature control device for a steam oven, including:

[0033] An acquisition module, configured to acquire a first temperature in the steam oven when the steam oven executes a cooking task;

[0034] A determination module, configured to determine the operating state of the steam oven based on the first temperature;

[0035] The determining module is further configured to determine a first temperature difference between the first temperature and a target temperature corresponding to the cooking task when the operating state is a first operating state, where the first operating state is used to indicate that the difference between the first temperature and the target temperature in the steam oven is less than a first temperature parameter;

[0036] The control module is configured to perform temperature control processing on the steam oven according to a first temperature control strategy when the first temperature difference is less than a second temperature parameter;

[0037] The obtaining module is further configured to obtain a second temperature after performing temperature control processing for a first preset duration, where the first temperature control strategy is used to indicate performing temperature control processing on the temperature in the steam oven through PID control;

[0038] The control module is further configured to adjust the temperature control strategy of the steam oven based on the second temperature.

[0039] In a possible design, the determining module is further configured to determine a first temperature rise value of the second temperature relative to the first temperature, and determine whether the first temperature rise value is not less than a third temperature parameter;

[0040] The control module is further configured to, when the first temperature rise value is less than the third temperature parameter, keep the temperature control strategy of the steam oven as the first temperature control strategy within a second preset duration, and obtain a third temperature after performing temperature control processing for a second preset duration;

[0041] The control module is further configured to adjust the temperature control strategy of the steam oven based on the third temperature.

[0042] In a possible design, the determining module is further configured to determine a second temperature rise value of the third temperature relative to the second temperature, and determine whether the second temperature rise value is not less than a fourth temperature parameter;

[0043] The control module is further configured to, when the second temperature rise value is less than the fourth temperature parameter, adjust the temperature control strategy of the steam oven to a second temperature control strategy, where the second temperature control strategy is used to indicate performing temperature control processing on the steam oven through a food cooking curve corresponding to the cooking task.

[0044] In a possible design, the control module is further configured to perform temperature control processing on the steam oven according to a third temperature control strategy when the operating state is a second operating state, where the second operating state is used to indicate that the difference between the first temperature and the target temperature in the steam oven is not less than the first temperature parameter, and the third temperature control strategy is used to indicate heating the inside of the steam oven at a first preset power;

[0045] The control module is further configured to obtain a fourth temperature after performing the temperature control process for a third preset duration, and adjust the temperature control strategy of the steam oven based on the fourth temperature.

[0046] In a possible design, the determining module is further configured to determine a third temperature rise value of the fourth temperature relative to the first temperature, and determine whether the third temperature rise value is not less than a fourth temperature parameter;

[0047] The control module is further configured to, when the third temperature rise value is not less than the fourth temperature parameter, adjust the temperature control strategy of the steam oven to a fourth temperature control strategy, where the fourth temperature control strategy is used to indicate heating the interior of the steam oven at a second preset power, and the second preset power is higher than the first preset power;

[0048] The control module is further configured to, when the third temperature rise value is less than the fourth temperature parameter, adjust the temperature control strategy of the steam oven to a second temperature control strategy.

[0049] In a possible design, the control module is further configured to, when the first temperature difference is not less than a second temperature parameter, control the convection fan of the steam oven to operate according to a target strategy, where the target strategy is used to indicate that the convection fan is turned on after a fourth preset duration;

[0050] The determining module is further configured to, after a fourth preset duration, obtain a fourth temperature inside the steam oven, and determine the temperature control strategy of the steam oven based on the fourth temperature.

[0051] In a possible design, the determining module is further configured to determine a fourth temperature rise value of the fourth temperature relative to the first temperature, and determine whether the fourth temperature rise value is not greater than zero;

[0052] The determining module is further configured to, when the fourth temperature rise value is greater than zero, determine to perform temperature control processing on the steam oven according to the first temperature control strategy;

[0053] The determining module is further configured to, when the fourth temperature rise value is not greater than zero, determine to perform temperature control processing on the steam oven according to the second temperature control strategy.

[0054] In a third aspect, the present application provides a temperature control device for a steam oven, including: a processor, and a memory communicatively connected to the processor;

[0055] The memory stores computer-executable instructions;

[0056] The processor executes the computer-executable instructions stored in the memory to implement the temperature control method for a steam oven as described in the first aspect.

[0057] In a fourth aspect, the present application provides a computer-readable storage medium storing computer-executable instructions that, when executed by a computer, are used to implement the temperature control method of the steam oven as described in the first aspect.

[0058] The temperature control method, device, equipment, and storage medium of the steam oven provided by the present application obtain a first temperature inside the steam oven when the steam oven executes a cooking task, and determine the operating state of the steam oven based on the first temperature; in the case where the operating state is a first operating state, determine a first temperature difference between the first temperature and a target temperature corresponding to the cooking task, where the first operating state is used to indicate that the difference between the first temperature and the target temperature inside the steam oven is less than a first temperature parameter; in the case where the first temperature difference is less than a second temperature parameter, perform temperature control processing on the steam oven according to a first temperature control strategy, and obtain a second temperature after a first preset duration of performing the temperature control processing, where the first temperature control strategy is used to indicate performing temperature control processing on the temperature inside the steam oven through PID control; adjust the temperature control strategy of the steam oven based on the second temperature. By the temperature difference of the steam oven, the operating state is judged in real time, the corresponding temperature control strategy is determined, and the temperature control strategy is adjusted based on the temperature change situation, solving the problem that the existing steam oven using PID temperature control alone has inaccurate temperature control, cannot accurately identify scenarios for precise temperature control, and thus affects the cooking effect of food. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0060] Figure 1 is a schematic flowchart of the temperature control method of the steam oven provided by the present application Figure 1 ;

[0061] Figure 2 is a schematic flowchart of the temperature control method of the steam oven provided by the present application Figure 2 ;

[0062] Figure 3 is a schematic flowchart of the temperature control method of the steam oven provided by the present application Figure 3 ;

[0063] Figure 4 is a schematic structural diagram of the temperature control device of the steam oven provided by the present application;

[0064] Figure 5 is a schematic structural diagram of the temperature control equipment of the steam oven provided by the present application.

[0065] Through the above-mentioned accompanying drawings, specific embodiments of the present application have been shown, and will be described in more detail hereinafter. These drawings and the written description are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by reference to specific embodiments. Detailed Description of the Embodiments

[0066] To make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be clearly and completely described below with reference to the accompanying drawings in the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0067] In the specification of the present invention and the above-mentioned accompanying drawings, terms such as "first", "second", "third", "fourth", etc. (if any) are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such used data may be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order different from those illustrated or described herein.

[0068] In the embodiments of the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.

[0069] Currently, the temperature control system of steam ovens usually uses PID control to more precisely control the temperature of steam ovens.

[0070] Regarding the above-mentioned existing steam ovens that simply use PID for temperature control, they cannot effectively control the scenarios during the user's use. For example, when the user simply opens the door to take a look during the cooking process, although the sensed temperature decreases, the load inside the oven does not change much. At this time, if a high-power output is given, it will cause the temperature inside the oven to oscillate and affect the cooking effect of the food.

[0071] On the other hand, after the machine has just completed preheating, the temperature of the sensor is relatively high. At this time, after putting food in, the temperature drop of the sensor is small, but at this time the load of the oven is very large and the power output needs to be quickly increased for cooking. If only conventional PID control is used, it will also cause the temperature inside the oven to oscillate and affect the cooking effect of the food.

[0072] To solve the above problems, the present application proposes a temperature control method for a steam oven. By using the temperature difference of the steam oven, the operating state is judged in real time, and the corresponding temperature control strategy is determined. Based on the temperature change, the temperature control strategy is adjusted to solve the problem that the existing steam oven cannot accurately identify the scenario and precisely control the temperature when using PID temperature control alone, thereby affecting the cooking effect of food.

[0073] The following uses specific embodiments to elaborate in detail on the technical solutions of the present application and how the technical solutions of the present application solve the above technical problems. These several specific embodiments can exist independently or be combined with each other. For the same or similar concepts or processes, they may not be repeated in some embodiments. The embodiments of the present application will be described below with reference to the accompanying drawings.

[0074] Figure 1 Flow schematic of the temperature control method for the steam oven provided by the embodiments of the present application Figure 1 As Figure 1 shown, the method includes:

[0075] S101. When the steam oven executes a cooking task, obtain the first temperature inside the steam oven, and determine the operating state of the steam oven based on the first temperature.

[0076] Among them, a temperature sensor can be set inside the steam oven to detect the temperature inside the steam oven. At the start of the task, this initial temperature value can be obtained through the system or device interface. For example, after the oven is started, the temperature sensor will send a real-time temperature reading to the control panel or cooking system.

[0077] It can be understood that the control system of the steam oven will compare the obtained first temperature with the preset cooking temperature (or temperature range). By obtaining the first temperature, comparing the difference between the first temperature and the target temperature, and comparing it with the corresponding temperature parameters, the current operating state can be determined. If the difference is large and the steam oven is heating, it may be in a state of "preheating", "heating", or the temperature drops when the oven door is opened during heating, etc.; if the temperature is close to the set value and stable, it enters the "stable" state.

[0078] Specifically, the current operating state of the steam oven can be roughly judged through the temperature difference. Whether it is working normally, or the user opens the oven door to put food during operation, or the temperature difference is large due to the oven door being open for a long time, or the steam oven has just started heating work, etc. The temperature difference from the target temperature is different through the above process. Therefore, different operating states can be judged through the temperature difference. Here, we can roughly divide them into two types of operating states. One is a large temperature difference from the target temperature, that is, the initial heating operation situation, and the other is a small temperature difference from the target temperature, that is, the operating situation where the temperature drops during the heating process and a temperature difference appears.

[0079] S102. When the operating state is the first operating state, determine the first temperature difference between the first temperature and the target temperature corresponding to the cooking task.

[0080] Among them, the first operating state is used to indicate that the difference between the first temperature and the target temperature in the steam oven is less than the first temperature parameter. The first temperature parameter can be a preset threshold used to determine whether the current temperature of the steam oven is close to the target temperature. When the difference between the actual temperature and the target temperature is less than this threshold, the steam oven is considered to be in the first operating state.

[0081] S103. When the first temperature difference is less than the second temperature parameter, perform temperature control processing on the steam oven according to the first temperature control strategy, and obtain the second temperature after the first preset duration of performing the temperature control processing.

[0082] Among them, the first temperature control strategy is used to indicate that the temperature in the steam oven is controlled by PID control. By calculating the error between the current temperature and the target temperature, and adjusting the heating power according to the proportion (P), integral (I), and differential (D) of the error, the precise control of the temperature is achieved.

[0083] It can be understood that PID control will dynamically adjust the heating power based on the gap (error) between the current temperature and the target temperature. P (Proportion) adjusts the heating power based on the current temperature error, increasing or decreasing the heating amount; I (Integral) considers the long-term temperature deviation to avoid temperature fluctuations caused by error accumulation; D (Differential) considers the temperature change rate to avoid over-response or under-response of the system.

[0084] Specifically, within the first preset duration, the PID control continuously acts. At this time, the steam oven continuously performs temperature control operations according to the temperature error and the PID adjustment result. And after the temperature control ends within the first preset duration, the second temperature is obtained to indicate the result of the PID temperature control.

[0085] S104. Based on the second temperature, adjust the temperature control strategy of the steam oven.

[0086] Among them, after performing the temperature control processing, it is necessary to wait for a certain time (i.e., the first preset duration) to allow the temperature in the steam oven to have enough time to respond to the adjustment of the PID control. The selection of the first preset duration can be determined according to the heating performance of the steam oven, the characteristics of the ingredients, and the requirements of the cooking task. This application does not limit it here.

[0087] It is understandable that after waiting for the first preset duration, the temperature sensor in the steam oven is used to measure the temperature at this time, that is, the second temperature. The second temperature can be used to reflect the temperature state in the steam oven after the PID control algorithm is adjusted. After obtaining the second temperature, it can be compared with the target temperature or the first temperature to judge the temperature change situation so as to evaluate the effect of the PID control algorithm. For example, if there is still a large difference between the second temperature and the target temperature, the temperature control effect can be further improved by adjusting the PID control parameters again or taking other measures.

[0088] It should be noted that in the above determination process, the first temperature parameter should be greater than the second temperature parameter, which is used for more accurate temperature determination to further adjust the temperature control state.

[0089] The temperature control method, device, equipment and storage medium of the steam oven provided by the present application obtain the first temperature in the steam oven when the steam oven executes a cooking task, and determine the operating state of the steam oven based on the first temperature; in the case where the operating state is the first operating state, determine the first temperature difference between the first temperature and the target temperature corresponding to the cooking task, and the first operating state is used to indicate that the difference between the first temperature and the target temperature in the steam oven is less than the first temperature parameter; in the case where the first temperature difference is less than the second temperature parameter, perform temperature control processing on the steam oven according to the first temperature control strategy, and obtain the second temperature after executing the temperature control processing for the first preset duration, where the first temperature control strategy is used to indicate that the temperature in the steam oven is controlled by PID control; based on the second temperature, adjust the temperature control strategy of the steam oven. By the temperature difference of the steam oven, the operating state is judged in real time, the corresponding temperature control strategy is determined, and the temperature control strategy is adjusted based on the temperature change situation, realizing the intelligent management and optimization of the temperature control of the steam oven, which helps to improve the completion quality of the cooking task, and at the same time provides a more flexible and intelligent temperature control experience for users, and solves the problem that the existing steam oven using PID temperature control alone has inaccurate temperature control and cannot accurately identify the scenario for precise temperature control, thereby affecting the cooking effect of food.

[0090] Figure 2 It is a flow diagram of the temperature control method of the steam oven provided by the embodiment of the present application Figure 2 As Figure 2 shown, on the basis of the Figure 1 embodiment, the temperature control method of the steam oven is described in detail. The method includes:

[0091] S201. When the steam oven executes a cooking task, obtain the first temperature in the steam oven and determine the operating state of the steam oven based on the first temperature.

[0092] S202. When the operating state is the first operating state, determine the first temperature difference between the first temperature and the target temperature corresponding to the cooking task.

[0093] S203. When the first temperature difference is less than the second temperature parameter, perform temperature control processing on the steam oven according to the first temperature control strategy.

[0094] S204. Obtain the second temperature after performing temperature control processing for the first preset duration.

[0095] Among them, steps S201 - S204 are similar to the above steps S101 - S103, and will not be elaborated herein in this application.

[0096] S205. Determine the first temperature rise value of the second temperature relative to the first temperature.

[0097] Among them, the second temperature is the temperature after PID control adjustment, and subtracting the first temperature from the second temperature can obtain the first temperature rise value.

[0098] It can be understood that if the first temperature rise value is positive, it means that the temperature in the steam oven has risen after performing temperature control processing; if the first temperature rise value is negative, it means that the temperature in the steam oven has dropped after performing temperature control processing; if the first temperature rise value is zero, it means that the temperature in the steam oven remains unchanged after performing temperature control processing. By comparing the first temperature rise value with the target temperature rise value, it can be judged whether the temperature control processing has achieved the expected effect.

[0099] Specifically, for example, according to the magnitude and direction of the first temperature rise value, the cooking task can be adjusted accordingly. For example, if the first temperature rise value is too large, it may be necessary to reduce the heating power or shorten the heating time; if the first temperature rise value is too small, it may be necessary to increase the heating power or extend the heating time. Adjust the temperature control strategy through the first temperature rise value.

[0100] S206. Judge whether the first temperature rise value is not less than the third temperature parameter; if so, execute step S207; if not, execute step S208.

[0101] S207. Keep the temperature control strategy of the steam oven as the first temperature control strategy.

[0102] Among them, the third temperature parameter can be used to judge whether the first temperature rise value has achieved the expected effect. The third temperature parameter can be determined according to factors such as the requirements of the cooking task, the performance of the steam oven, and the characteristics of the ingredients, and is not limited herein in this application.

[0103] Understandably, the calculated first temperature rise value is compared with a preset third temperature parameter. If the first temperature rise value is not less than the third temperature parameter, it indicates that the effect of the temperature control process has met or exceeded expectations, and the current temperature control strategy can be considered effective. That is, it is decided to maintain the temperature control strategy of the steam oven as the first temperature control strategy and continue to control the temperature of the steam oven according to the current PID control parameters.

[0104] Optionally, while maintaining the first temperature control strategy, the temperature inside the steam oven should be continuously monitored to ensure that the temperature always remains within the target range. If the temperature fluctuates abnormally or deviates from the target range, adjustments may need to be made in a timely manner. For example, according to the effect of temperature control and the requirements of the cooking task, it may be necessary to fine-tune the cooking task. If the temperature control is stable and the cooking progress of the ingredients is good, the current state can be maintained; if the temperature control is unstable or the cooking progress of the ingredients lags behind, it may be necessary to increase the heating power or adjust the cooking time.

[0105] S208. Within the second preset duration, maintain the temperature control strategy of the steam oven as the first temperature control strategy and obtain the third temperature after performing the temperature control process for the second preset duration.

[0106] Among them, if the first temperature rise value is less than the third temperature parameter, it indicates that the current temperature control strategy has not achieved the expected effect. The current temperature control strategy (the first temperature control strategy) is continued within the second preset duration, and the change of the temperature under the maintenance of the current strategy is observed through the second preset duration.

[0107] Understandably, after the second preset duration ends, the temperature inside the steam oven is measured again using the temperature sensor to obtain the third temperature. The third temperature reflects the temperature state inside the steam oven after maintaining the first temperature control strategy and waiting for the second preset duration. If there is still a large difference between the third temperature and the target temperature, or the temperature control effect is not ideal (such as excessive temperature fluctuations, inability to stabilize, etc.), then the temperature control strategy may need to be adjusted.

[0108] By judging whether the first temperature rise value is not less than the third temperature parameter and deciding whether to maintain the temperature control strategy of the steam oven and obtain subsequent temperature data according to the judgment result, precise adjustment and continuous optimization of the temperature control of the steam oven can be achieved.

[0109] S209. Determine the second temperature rise value of the third temperature relative to the second temperature.

[0110] S210. Judge whether the second temperature rise value is not less than the fourth temperature parameter; if so, execute step S211; if not, execute step S212.

[0111] S211. Maintain the temperature control strategy of the steam oven as the first temperature control strategy.

[0112] The second temperature is the temperature inside the steam oven measured after performing temperature control processing and waiting for the first preset duration; the third temperature is the temperature inside the steam oven measured again after maintaining the current temperature control strategy (the first temperature control strategy) and waiting for the second preset duration. The fourth temperature parameter is a preset threshold value used to determine whether the second temperature rise value has achieved the expected effect.

[0113] It can be understood that if the second temperature rise value is not less than the fourth temperature parameter, it can be decided to maintain the temperature control strategy of the steam oven as the first temperature control strategy, that is, to continue to control the temperature of the steam oven according to the current PID control parameters or other control logics without additional adjustment.

[0114] S212. Adjust the temperature control strategy of the steam oven to the second temperature control strategy.

[0115] Among them, the second temperature control strategy is used to indicate temperature control processing of the steam oven through the food cooking curve corresponding to the cooking task. The second temperature control strategy can be used to indicate formulation based on the food cooking curve corresponding to the cooking task. The food cooking curve is comprehensively determined according to factors such as the characteristics of the ingredients, the requirements of the cooking task, and the performance of the steam oven, and is used to guide the entire process of temperature control.

[0116] It can be understood that if the second temperature rise value is less than the fourth temperature parameter, it means that the current temperature control strategy may not have achieved the expected effect and needs to be adjusted to the second temperature control strategy. When implementing the second temperature control strategy, the steam oven will perform temperature control processing according to the food cooking curve to ensure the best taste and nutritional retention effect of the ingredients during cooking.

[0117] S213. When the first temperature difference is not less than the second temperature parameter, control the convection fan of the steam oven to operate according to the target strategy.

[0118] Among them, the target strategy is used to indicate that the convection fan is turned on after delaying the fourth preset duration. The second temperature parameter is a preset threshold value used to compare with the first temperature difference. When the first temperature difference is not less than this threshold value, it means that the temperature distribution inside the steam oven may not be uniform enough, or the difference from the set temperature is relatively large, and certain control measures need to be taken.

[0119] It can be understood that the target strategy refers to the operation strategy of the convection fan, specifically indicating when and how the convection fan is turned on. In this scenario, the target strategy is to turn on the convection fan after delaying the fourth preset duration. The fourth preset duration is a specific time period used to provide a delay before the convection fan is turned on. This delay can be used to wait for the temperature distribution inside the steam oven to reach a more stable state, or to avoid the negative impact caused by immediately turning on the fan when the temperature fluctuates greatly.

[0120] Specifically, after the convection fan is turned on, the air flow in the steam oven will be enhanced, which helps to improve the uneven temperature distribution. The more uniform temperature distribution can improve the cooking effect, make the food more evenly heated, and have a better taste. By monitoring the first temperature difference and comparing it with the second temperature parameter, and delaying the turning on of the convection fan according to the target strategy, intelligent control of the temperature distribution of the steam oven can be achieved.

[0121] S214. After a fourth preset time period, obtain a fourth temperature in the steam oven.

[0122] S215: Determine a fourth temperature rise value of the fourth temperature relative to the first temperature.

[0123] S216, determining whether the fourth temperature rise value is not greater than zero; if so, executing step S217; if not, executing step S218.

[0124] S217, determining to perform temperature control processing on the steam oven according to the second temperature control strategy.

[0125] The difference between the fourth temperature and the initial temperature (first temperature) is calculated to obtain a fourth temperature rise value. This difference reflects the temperature change from the initial state to the current state. The fourth temperature rise value is compared with zero. If the fourth temperature rise value is not greater than zero, it means that the temperature in the steam oven has not increased, and may even decrease, which indicates that the current temperature control strategy may not achieve the expected effect. At this time, for example, it can be determined that cold food or other food with a low temperature that needs to be heated is currently placed in the steam oven. Since the food is originally at a low temperature, in order to achieve the cooking effect, the second temperature control strategy can be used to perform temperature control operations on the steam oven.

[0126] It is understandable that if the fourth temperature rise value is not greater than zero, the steam oven is temperature controlled by the second temperature control strategy. The second temperature control strategy can be used to improve the temperature control effect and ensure that the food can be cooked according to the expected cooking curve.

[0127] S218: Determine to perform temperature control on the steam oven according to the first temperature control strategy, and return to execute step S204.

[0128] If the fourth temperature rise value is greater than zero, it means that the temperature in the steam oven has increased, which indicates that the current temperature balance strategy has not caused the temperature to drop. At this time, for example, it can be said that food with a certain basic temperature is placed in the steam oven. Due to the basic temperature, it does not need to be heated with a higher power, and the steam oven can be temperature controlled by PID control.

[0129] It can be understood that after a period of time, step S204 can be re-executed to evaluate the effect of the current first temperature control strategy, and the temperature control strategy can be further adjusted based on the obtained second temperature to ensure the cooking effect during the entire cooking process.

[0130] The temperature control method of the steam oven provided in this embodiment dynamically adjusts the temperature control strategy by determining the temperature rise value under different temperature control operations. Different temperature rise values can distinguish various scenarios during the use of the steam oven, realizing accurate temperature control operations according to the actual use scenarios of the steam oven, dynamically adjusting the working power of the steam oven according to multiple temperature control strategies, ensuring the cooking effect of food, and solving the problem that the existing steam oven cannot accurately identify the scenario and accurately control the temperature when using PID temperature control alone, thereby affecting the cooking effect of food.

[0131] Figure 3 It is a flow schematic of the temperature control method of the steam oven provided in the embodiment of the present application. Figure 3 As Figure 3 shown, on the basis of the Figure 1 embodiment, this embodiment details the temperature control process when the operating state of the steam oven is in the second operating state. The method includes:

[0132] S301. When the operating state is the second operating state, perform temperature control on the steam oven according to the third temperature control strategy.

[0133] Among them, the second operating state is used to indicate that the difference between the first temperature and the target temperature in the steam oven is not less than the first temperature parameter, and the third temperature control strategy is used to indicate that the inside of the steam oven is heated according to the first preset power. The second operating state means that the difference between the first temperature and the target temperature is large at this time, and it may be necessary to perform a heating cooking process inside the steam oven.

[0134] It can be understood that since the temperature inside the steam oven is lower than the target temperature at this time, it is heated by the first preset power. At this time, the first preset power should be a basic heating power. Heating at a lower power can avoid the temperature rising sharply and causing the ingredients to overheat or burn, ensuring the cooking effect of food. After the food has a basic temperature, subsequent heating operations can be carried out. The purpose of this low-power heating is to allow the device to gradually reach the set temperature without excessive pressure, ensuring the temperature uniformity of the ingredients and the inside of the oven.

[0135] S302. Obtain the fourth temperature after executing the temperature control process for the third preset duration.

[0136] S303. Determine the third temperature rise value of the fourth temperature relative to the first temperature.

[0137] S304. Determine whether the third temperature rise value is not less than the fourth temperature parameter. If so, execute step S305; if not, execute step S306.

[0138] S305. Adjust the temperature control strategy of the steam oven to the fourth temperature control strategy.

[0139] Among them, the fourth temperature control strategy is used to indicate that the interior of the steam oven is heated up at a second preset power, and the second preset power is higher than the first preset power. Compare the third temperature rise value with the fourth temperature parameter. If the third temperature rise value is not less than the fourth temperature parameter, it means that the degree of temperature rise has reached or exceeded the preset expected value.

[0140] It can be understood that the second preset power is a relatively high power and is applicable to the stage where rapid heating is required. When there is already a certain temperature accumulation, increasing the power can help quickly reach the set target temperature. Once the temperature rises enough to meet the set conditions, the steam oven will switch to the high-power stage of the second preset power for rapid heating to ensure the best cooking effect for the equipment and ingredients.

[0141] That is to say, after performing temperature control processing for a period of time, judge the degree of temperature change by measuring the temperature and calculating the temperature rise value. If the degree of temperature rise reaches the preset expected value, adjust the temperature control strategy to heat at a higher power. This process can ensure that the temperature inside the steam oven rises at the expected rate, thus meeting the requirements of the cooking task.

[0142] S306. Adjust the temperature control strategy of the steam oven to the second temperature control strategy.

[0143] Among them, if the third temperature rise value is less than the fourth temperature parameter, it can be considered that the temperature rises slowly or the heating is insufficient, and the temperature control strategy needs to be adjusted. At this time, cook it according to the food cooking curve.

[0144] It can be understood that adjusting to the second temperature control strategy uses a higher power or heating method to ensure that the temperature rise rate reaches the expectation, avoid slow or uneven cooking of food, and adjust the working parameters of the temperature control system according to the food cooking curve. For example, when using the food cooking curve for temperature control adjustment, the heating process can be controlled more precisely. For example, in the initial stage of food, a lower temperature may be required to ensure uniform heating inside the food, while in the later stage, the temperature needs to be increased for surface baking or caramelization. Adjust the amplitude of temperature rise and heating time to avoid overcooking or uneven heating of food due to too high an initial temperature or too long a heating time.

[0145] Specifically, for example, for meat, it can be slowly heated at a low temperature at the initial stage to ensure that the inside is thoroughly cooked, and then heated at a high temperature on the surface at the later stage to achieve a crispy or charred effect; for cakes, a relatively stable temperature can be selected to ensure that the inside is thoroughly cooked and the outside does not burn; for vegetables, a relatively stable heating method can be adopted to avoid excessive water loss or overcooking caused by too high a temperature.

[0146] When the third temperature rise value of the steam oven is less than the fourth temperature parameter, it can be considered that the temperature rises slowly or the temperature rise is insufficient. At this time, the temperature control strategy needs to be adjusted to improve the temperature rise effect. After adjusting the strategy, cooking the food by applying the food cooking curve can ensure the best cooking effect of the food.

[0147] The temperature control method of the steam oven provided in this embodiment determines that the current operating state of the steam oven is the second operating state through the temperature difference. Based on the current operating state, it is first heated with a small power, and after heating for a period of time, the temperature control strategy is adjusted in real time through the temperature rise data. The adjustment strategy can more effectively increase the temperature and ensure the best cooking effect of the food.

[0148] Figure 4 It is a schematic structural diagram of the temperature control device of the steam oven provided in this application, as Figure 4 shown, the steam control device 400 of the steam oven provided in this embodiment includes:

[0149] An acquisition module 401, configured to acquire the first temperature in the steam oven when the steam oven executes a cooking task;

[0150] A determination module 402, configured to determine the operating state of the steam oven based on the first temperature;

[0151] The determination module 402 is further configured to, when the operating state is the first operating state, determine the first temperature difference between the first temperature and the target temperature corresponding to the cooking task, where the first operating state is used to indicate that the difference between the first temperature and the target temperature in the steam oven is less than the first temperature parameter;

[0152] A control module 403, configured to perform temperature control processing on the steam oven according to the first temperature control strategy when the first temperature difference is less than the second temperature parameter;

[0153] The acquisition module 401 is further configured to acquire the second temperature after the first preset duration of temperature control processing, where the first temperature control strategy is used to indicate performing temperature control processing on the temperature in the steam oven through PID control;

[0154] The control module 403 is further configured to adjust the temperature control strategy of the steam oven based on the second temperature.

[0155] In a possible design, the determination module 402 is further configured to determine a first temperature rise value of the second temperature relative to the first temperature, and determine whether the first temperature rise value is not less than a third temperature parameter;

[0156] The control module 403 is further configured to, when the first temperature rise value is less than the third temperature parameter, maintain the temperature control strategy of the steam oven as the first temperature control strategy within a second preset duration, and obtain a third temperature after performing temperature control processing for the second preset duration;

[0157] The control module 403 is further configured to adjust the temperature control strategy of the steam oven based on the third temperature.

[0158] In a possible design, the determination module 402 is further configured to determine a second temperature rise value of the third temperature relative to the second temperature, and determine whether the second temperature rise value is not less than a fourth temperature parameter;

[0159] The control module 403 is further configured to, when the second temperature rise value is less than the fourth temperature parameter, adjust the temperature control strategy of the steam oven to a second temperature control strategy, where the second temperature control strategy is used to indicate temperature control of the steam oven through a food cooking curve corresponding to a cooking task.

[0160] In a possible design, the control module 403 is further configured to, when the operating state is a second operating state, perform temperature control on the steam oven according to a third temperature control strategy, where the second operating state is used to indicate that the difference between the first temperature and the target temperature in the steam oven is not less than a first temperature parameter, and the third temperature control strategy is used to indicate heating the interior of the steam oven at a first preset power;

[0161] The control module 403 is further configured to obtain a fourth temperature after performing temperature control processing for a third preset duration, and adjust the temperature control strategy of the steam oven based on the fourth temperature.

[0162] In a possible design, the determination module 402 is further configured to determine a third temperature rise value of the fourth temperature relative to the first temperature, and determine whether the third temperature rise value is not less than a fourth temperature parameter;

[0163] The control module 403 is further configured to, when the third temperature rise value is not less than the fourth temperature parameter, adjust the temperature control strategy of the steam oven to a fourth temperature control strategy, where the fourth temperature control strategy is used to indicate heating the interior of the steam oven at a second preset power, and the second preset power is higher than the first preset power;

[0164] The control module 403 is further configured to, when the third temperature rise value is less than the fourth temperature parameter, adjust the temperature control strategy of the steam oven to the second temperature control strategy.

[0165] In a possible design, the control module 403 is further configured to control the convection fan of the steam oven to operate according to a target strategy when the first temperature difference is not less than the second temperature parameter, and the target strategy is used to indicate that the convection fan is turned on after a fourth preset duration of delay;

[0166] The determination module 402 is further configured to, after the fourth preset duration, obtain the fourth temperature inside the steam oven and determine the temperature control strategy of the steam oven based on the fourth temperature.

[0167] In a possible design, the determination module 402 is further configured to determine the fourth temperature rise value of the fourth temperature relative to the first temperature and determine whether the fourth temperature rise value is not greater than zero;

[0168] The determination module 402 is further configured to, when the fourth temperature rise value is greater than zero, determine to perform temperature control processing on the steam oven according to the first temperature control strategy;

[0169] The determination module 402 is further configured to, when the fourth temperature rise value is not greater than zero, determine to perform temperature control processing on the steam oven according to the second temperature control strategy.

[0170] The temperature control device of the steam oven provided in this embodiment can execute the method provided in the above method embodiment, and its implementation principle and technical effect are similar, which will not be elaborated here in this embodiment.

[0171] Figure 5 It is a schematic structural diagram of the temperature control device of the steam oven provided in this application. As Figure 5 shown, the electronic device 500 provided in this embodiment includes: at least one processor 501 and a memory 502. Optionally, the device 500 further includes a communication component 503. Among them, the processor 501, the memory 502, and the communication component 503 are connected through a bus 504.

[0172] In a specific implementation process, at least one processor 501 executes the computer execution instructions stored in the memory 502, so that at least one processor 501 executes the above method.

[0173] The specific implementation process of the processor 501 can refer to the above method embodiment, and its implementation principle and technical effect are similar, which will not be elaborated here in this embodiment.

[0174] In the above embodiments, it should be understood that the processor may be a central processing unit (CPU for short), or other general-purpose processors, digital signal processors (DSP for short), application specific integrated circuits (ASIC for short), etc. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the method disclosed in combination with the invention can be directly implemented by the execution of the hardware processor, or by the combination of the hardware and software modules in the processor.

[0175] The memory may include a high-speed memory (Random Access Memory, RAM), and may also include a non-volatile memory (Non-volatile Memory, NVM), such as at least one disk memory.

[0176] The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For the sake of representation, the buses in the drawings of this application are not limited to only one bus or one type of bus.

[0177] This application also provides a computer program product, including a computer program, which implements the above method when executed by a processor.

[0178] This application also provides a computer-readable storage medium, in which computer-executable instructions are stored, and when the processor executes the computer-executable instructions, the above method is implemented.

[0179] The above-readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, a magnetic disk or an optical disc. The readable storage medium can be any available medium accessible by a general-purpose or special-purpose computer.

[0180] An exemplary readable storage medium is coupled to a processor, enabling the processor to read information from and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can be located in an Application Specific Integrated Circuits (ASIC). Of course, the processor and the readable storage medium can also exist as discrete components in a device.

[0181] The division of units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the couplings or direct couplings or communication connections shown or discussed between each other can be indirect couplings or communication connections through some interfaces, devices or units, and can be in electrical, mechanical or other forms.

[0182] The units described as separate components may or may not be physically separated. The components shown as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0183] In addition, in each embodiment of the present invention, the functional units can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit.

[0184] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods in each embodiment of the present invention. The aforementioned storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks or optical discs that can store program codes.

[0185] Those of ordinary skill in the art will understand that all or part of the steps of implementing the above method embodiments can be completed by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it performs the steps including those of the above method embodiments; and the aforementioned storage medium includes various media such as ROM, RAM, magnetic disks, or optical discs that can store program codes.

[0186] So far, the technical solutions of the present application have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and 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. A method for controlling the temperature of a steam oven, characterized in that: The method comprises: When the steam oven performs a cooking task, obtaining a first temperature in the steam oven, and determining an operating state of the steam oven based on the first temperature; When the operating state is a first operating state, determining a first temperature difference between the first temperature and a target temperature corresponding to the cooking task, the first operating state being used to indicate that the difference between the first temperature in the steam oven and the target temperature is less than a first temperature parameter; When the first temperature difference is less than the second temperature parameter, the steam oven is temperature controlled according to a first temperature control strategy, and a second temperature after the temperature control is performed for a first preset time is obtained, wherein the first temperature control strategy is used to indicate that the temperature in the steam oven is temperature controlled by PID control; Based on the second temperature, the temperature control strategy of the steam oven is adjusted.

2. The method according to claim 1, characterized in that The adjusting the temperature control strategy of the steam oven based on the second temperature includes: determining a first temperature rise value of the second temperature relative to the first temperature, and judging whether the first temperature rise value is not less than a third temperature parameter; When the first temperature rise value is less than the third temperature parameter, the temperature control strategy of the steam oven is maintained as the first temperature control strategy within a second preset time, and a third temperature after the temperature control process is performed for the second preset time is obtained; Based on the third temperature, the temperature control strategy of the steam oven is adjusted.

3. The method according to claim 2, characterized in that The adjusting the temperature control strategy of the steam oven based on the third temperature includes: determining a second temperature rise value of the third temperature relative to the second temperature, and judging whether the second temperature rise value is not less than a fourth temperature parameter; When the second temperature rise value is less than the fourth temperature parameter, the temperature control strategy of the steam oven is adjusted to the second temperature control strategy, wherein the second temperature control strategy is used to instruct the steam oven to be temperature controlled by the food cooking curve corresponding to the cooking task.

4. The method according to claim 1, characterized in that: The method further comprises: When the operating state is the second operating state, the steam oven is temperature controlled according to a third temperature control strategy, wherein the second operating state is used to indicate that the difference between the first temperature in the steam oven and the target temperature is not less than a first temperature parameter, wherein the third temperature control strategy is used to indicate that the temperature inside the steam oven is increased according to a first preset power; A fourth temperature after the temperature control process is performed for a third preset time period is obtained, and a temperature control strategy of the steam oven is adjusted based on the fourth temperature.

5. The method according to claim 4, characterized in that The step of determining a temperature control strategy of the steam oven based on the fourth temperature includes: determining a third temperature rise value of the fourth temperature relative to the first temperature, and judging whether the third temperature rise value is not less than a fourth temperature parameter; When the third temperature rise value is not less than the fourth temperature parameter, adjusting the temperature control strategy of the steam oven to a fourth temperature control strategy, wherein the fourth temperature control strategy is used to indicate that the temperature inside the steam oven is increased according to a second preset power, and the second preset power is higher than the first preset power; When the third temperature rise value is less than the fourth temperature parameter, the temperature control strategy of the steam oven is adjusted to the second temperature control strategy.

6. The method according to claim 1, characterized in that The method further comprises: When the first temperature difference is not less than the second temperature parameter, controlling the convection fan of the steam oven to operate according to a target strategy, wherein the target strategy is used to instruct the convection fan to start after a delay of a fourth preset time period; After a fourth preset time period, a fourth temperature in the steam oven is obtained, and based on the fourth temperature, a temperature control strategy of the steam oven is determined.

7. The method according to claim 6, characterized in that The step of determining a temperature control strategy of the steam oven based on the fourth temperature includes: determining a fourth temperature rise value of the fourth temperature relative to the first temperature, and judging whether the fourth temperature rise value is not greater than zero; When the fourth temperature rise value is greater than zero, determining to perform temperature control processing on the steam oven according to the first temperature control strategy; When the fourth temperature rise value is not greater than zero, it is determined to perform temperature control processing on the steam oven according to the second temperature control strategy.

8. A temperature control device for a steam oven, characterized in that: The device comprises: an acquisition module, used for acquiring a first temperature in the steam oven when the steam oven performs a cooking task; a determination module, configured to determine an operating state of the steam oven based on the first temperature; The determining module is further configured to determine, when the operating state is a first operating state, a first temperature difference between the first temperature and a target temperature corresponding to the cooking task, wherein the first operating state is configured to indicate that the difference between the first temperature in the steam oven and the target temperature is less than a first temperature parameter; a control module, configured to perform temperature control on the steam oven according to a first temperature control strategy when the first temperature difference is less than a second temperature parameter; The acquisition module is further used to acquire a second temperature after the temperature control process is performed for a first preset time, wherein the first temperature control strategy is used to indicate that the temperature in the steam oven is controlled by PID control; The control module is further used to adjust the temperature control strategy of the steam oven based on the second temperature.

9. A temperature control device for a steam oven, characterized in that: include: Memory, processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the processor performs the method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, which are used to implement the method according to any one of claims 1 to 7 when executed by a processor.

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