阅读说明：本技术 一种溢锅控制方法及烹饪控制方法 (Pot overflow control method and cooking control method ) 是由 李明守 于 2017-03-10 设计创作，主要内容包括：一种烹饪控制方法,所述方法包括：当接收到烹饪开始的指令时,获取锅具中的待烹饪食物对应的烹饪控制配方；所述烹饪控制配方包括时间和温度之间的对应关系；采用所获取的烹饪控制配方对所述锅具中的待烹饪食物进行烹饪控制。上述的方案,可以实现食物的自动化烹饪,提升用户的使用体验。(A cooking control method, the method comprising: when a cooking starting instruction is received, acquiring a cooking control formula corresponding to food to be cooked in the pot; the cooking control recipe comprises a correspondence between time and temperature; and cooking control is carried out on the food to be cooked in the pot by adopting the obtained cooking control formula. By means of the scheme, automatic cooking of food can be achieved, and using experience of a user is improved.)

1. A cooking control method, comprising:

obtaining a cooking control formula corresponding to food to be cooked in a pot; the cooking control recipe comprises a correspondence between time and temperature;

and cooking control is carried out on the food to be cooked in the pot by adopting the obtained cooking control formula.

2. The cooking control method according to claim 1, wherein the cooking control recipe includes information of a cooking table; the cooking table comprises more than one cooking step, and the cooking step comprises information of a time set value and a temperature set value; adopting the culinary art control formula that obtains to wait to cook in the pan and cook control, including:

traversing the cooking steps in the obtained cooking control formula in sequence;

acquiring information of a temperature set value and a time set value in the traversed current cooking step;

in a time period corresponding to the time set value, controlling a gas stove to heat the cookware based on the temperature measured value of the cookware and the temperature set value, so that the measured temperature of the cookware reaches the temperature set value at the end of the time period corresponding to the time set value;

when the measured temperature of the pot reaches the temperature set value, judging whether all cooking steps in the cooking control formula are finished;

and when the cooking steps in the cooking control formula are not completely executed, acquiring the next cooking step until the cooking steps in the cooking control formula are completely executed.

3. The cooking control method according to claim 2, wherein the controlling a gas cooker to heat the pot based on the temperature measurement value of the pot and the temperature setting value in the time period corresponding to the time setting value so that the measured temperature of the pot reaches the temperature setting value at the end of the time period corresponding to the time setting value comprises:

dividing the time period corresponding to the time setting value into a plurality of corresponding sampling periods according to a preset time length;

generating the temperature set value of each sampling period by adopting an interpolation method based on the temperature set value of the current cooking step and the temperature set value of the previous cooking step;

acquiring a temperature measurement value of the cookware in each sampling period, and comparing the acquired temperature measurement value of the cookware with a temperature set value corresponding to the sampling period;

when the acquired temperature measurement value of the pot is determined to be smaller than the temperature set value corresponding to the corresponding sampling period, controlling the gas stove to increase firepower to heat the pot; when the acquired temperature measurement value of the pot is determined to be larger than the temperature set value corresponding to the corresponding sampling period, controlling a gas stove to reduce firepower to heat the pot so as to enable the temperature measurement value of the pot to reach the temperature set value corresponding to the sampling period; and ending all the corresponding sampling periods obtained by dividing the time period corresponding to the time set value.

4. The cooking control method according to claim 3, wherein the cooking control recipe further includes information of a temperature offset value;

the temperature deviation value is suitable for correcting the temperature control deviation of the cookware, so that the temperature set value of the cookware is the sum of the measured temperature of the cookware and the temperature deviation value.

5. The cooking control method according to claim 4, further comprising:

detecting whether the cookware is in a pot overflowing state or not in the process of cooking control of food to be cooked in the cookware by using the obtained cooking control formula;

when the cooker is determined to be in the overflowing state, the gas stove is controlled to reduce firepower to control heating of the cooker until the overflowing state of the cooker is eliminated.

6. The cooking control method of claim 5, wherein the detecting whether the pot is in the overflow state comprises any one of the following steps:

detecting that the height of foam in the pan reaches the height threshold;

detecting that liquid in the pot overflows out of the pot;

detecting that the pot cover of the pot is converted into a moving state from a static state.

7. The cooking control method according to claim 5 or 6, wherein the modifying the obtained cooking control recipe comprises at least one of:

reducing a temperature offset value in the cooking control recipe;

and reducing the temperature set value of the cooking step in the cooking control formula at the moment of the occurrence of the pot overflowing state.

8. A pot overflow control method is characterized in that: obtaining a corresponding cooking control recipe, further comprising:

monitoring whether the cookware is in an overflowing state, reducing firepower to heat and eliminating the overflowing state when the cookware is detected to be in the overflowing state, and counting the overflowing times;

when the number of times of pot overflow is determined to reach a preset number threshold, acquiring a temperature set value corresponding to a sampling period to which the pot overflow state belongs at the occurrence moment;

comparing the temperature set value corresponding to the sampling period with the temperature set value of the cooking step at the time of the occurrence of the pot overflowing state;

when the temperature set value of the pot corresponding to the sampling period of the occurrence moment of the pot overflowing state is lower than the cooking step temperature set value of the occurrence moment of the pot overflowing state, reducing the set value of the temperature deviant in the obtained cooking control formula by a preset value, and resetting the pot overflowing count;

when the temperature setting value of the pot corresponding to the sampling period corresponding to the occurrence moment of the overflowing state is higher than the temperature setting value of the cooking step corresponding to the occurrence moment of the overflowing state, respectively reducing the temperature setting value of the current cooking step and the temperature setting value of the subsequent cooking step of which the temperature setting value is higher than the temperature setting value of the current cooking step in the obtained cooking formula by preset values so as to update the current cooking step and the subsequent cooking step in the obtained cooking control formula, and resetting the overflowing count; and adopting the updated cooking control formula to perform cooking control on the food in the pot.

9. The pan spill control method of claim 8, further comprising:

identifying the difference value of the temperature set value of the cookware obtained in the sampling period of the occurrence moment of the pot overflow state and the temperature set value of the cooking step of the occurrence moment of the pot overflow state as a 1 st adjustment value; the preset value is a partial value of the 1 st adjustment value.

10. The spill pan control method of any one of claims 8-9, further comprising:

when the times of overflowing cooking reaches the preset times threshold value, the set value of the temperature deviant in the cooking control formula and the set value of the temperature of the cooking step at the time of overflowing cooking can be reduced at the same time, and the sum of the reduction range of the temperature deviant and the reduction range of the temperature set value of the cooking step at the time of overflowing cooking can be smaller than the 1 st adjustment value.

Technical Field

The invention relates to the technical field of circuits, in particular to a cooking control method.

Background

When the gas stove in the prior art is used for cooking dishes, soup, rice, porridge and the like, a user needs to control the firepower and cooking time of the gas stove on site and remotely to prevent overflowing and/or boiling so as to cook delicious food. For hot frying, continuous stir-frying and firepower and time control are required, so that the field operation of a user is inevitably required, and automatic cooking cannot be realized; however, for cooking such as soup making, rice cooking, porridge cooking, pancake cooking, food material loading into a pot, and ignition cooking, it is not necessary to turn over the cooking in real time, but only the firepower and the duration of the firepower of the gas stove need to be controlled, and automatic cooking is expected to be realized. In addition, the firepower of the inner ring fire and the outer ring fire of the gas stove in the prior art can not be independently adjusted, and the cookware can not be uniformly heated. The cooking control method of the invention enables the gas stove to automatically cook soup, cook rice, cook porridge and pancake without user participation during cooking, and the user can make delicious food with or without cooking skill.

Disclosure of Invention

The embodiment of the invention solves the problem of how to realize automatic cooking of food and improve the use experience of a user.

To solve the above problem, an embodiment of the present invention provides a cooking control method, including: obtaining a cooking control formula corresponding to food to be cooked in a pot; the cooking control recipe comprises a correspondence between time and temperature; and cooking control is carried out on the food to be cooked in the pot by adopting the obtained cooking control formula.

Optionally, the cooking control recipe includes information of a cooking table; the cooking table comprises more than one cooking step, and the cooking step comprises information of a time set value and a temperature set value; adopting the culinary art control formula that obtains to wait to cook in the pan and cook control, including: traversing the cooking steps in the obtained cooking control formula in sequence; acquiring information of a temperature set value and a time set value in the traversed current cooking step; in a time period corresponding to the time set value, controlling a gas stove to heat the cookware based on the temperature measured value of the cookware and the temperature set value, so that the measured temperature of the cookware reaches the temperature set value at the end of the time period corresponding to the time set value; when the measured temperature of the pot reaches the temperature set value, judging whether all cooking steps in the cooking control formula are finished; and when the cooking steps in the cooking control formula are not completely executed, acquiring the next cooking step until the cooking steps in the cooking control formula are completely executed.

Optionally, in a time period corresponding to the time setting value, controlling a gas stove to heat the pot based on the temperature measurement value of the pot and the temperature setting value, so that the measured temperature of the pot reaches the temperature setting value at the end of the time period corresponding to the time setting value, including: dividing the time period corresponding to the time setting value into a plurality of corresponding sampling periods according to a preset time length; generating the temperature set value of each sampling period by adopting an interpolation method based on the temperature set value of the current cooking step and the temperature set value of the previous cooking step; acquiring a temperature measurement value of the cookware in each sampling period, and comparing the acquired temperature measurement value of the cookware with a temperature set value corresponding to the sampling period; when the acquired temperature measurement value of the pot is determined to be smaller than the temperature set value corresponding to the corresponding sampling period, controlling the gas stove to increase firepower to heat the pot; when the acquired temperature measurement value of the pot is determined to be larger than the temperature set value corresponding to the corresponding sampling period, controlling a gas stove to reduce firepower to heat the pot so as to enable the temperature measurement value of the pot to reach the temperature set value corresponding to the sampling period; and ending all the corresponding sampling periods obtained by dividing the time period corresponding to the time set value.

Optionally, the cooking control recipe further comprises information of a temperature offset value; the temperature deviation value is suitable for correcting the temperature control deviation of the cookware, so that the temperature set value of the cookware is the sum of the measured temperature of the cookware and the temperature deviation value.

Optionally, the method further comprises: detecting whether the cookware is in a pot overflowing state or not in the process of cooking control of food to be cooked in the cookware by using the obtained cooking control formula; when the cooker is determined to be in the overflowing state, the gas stove is controlled to reduce firepower to control heating of the cooker until the overflowing state of the cooker is eliminated.

Optionally, whether detect the pan and be in excessive pot state, including any one of following: detecting that the height of foam in the pan reaches the height threshold; detecting that liquid in the pot overflows out of the pot; detecting that the pot cover of the pot is converted into a moving state from a static state.

Optionally, the modifying the obtained cooking control recipe comprises at least one of: reducing a temperature offset value in the cooking control recipe; and reducing the temperature set value of the cooking step in the cooking control formula at the moment of the occurrence of the pot overflowing state.

Optionally, when it is determined that the pot is in the overflow state, the method further comprises: counting the times of overflowing; when the number of times of pot overflow is determined to reach a preset number threshold, acquiring a temperature set value corresponding to a sampling period to which the pot overflow state belongs at the occurrence moment; comparing the temperature set value corresponding to the sampling period with the temperature set value of the cooking step at the time of the occurrence of the pot overflowing state; when the difference value between the temperature set value corresponding to the sampling period and the temperature set value of the cooking step at the overflowing state occurrence moment is determined to exceed the preset range, reducing the set value of the temperature deviation value in the obtained cooking control formula by a preset numerical value, or respectively reducing the temperature set value of the current cooking step and the temperature set value in the obtained cooking control formula to be higher than the temperature set value of the current cooking step or the temperature set values of the current cooking step and the subsequent cooking step by preset numerical values, so as to update the current cooking step and the subsequent cooking step in the obtained cooking control formula; the preset numerical value is related to the difference value between the temperature set value corresponding to the sampling period and the temperature set value of the cooking step at the overflowing state occurrence moment; and adopting the updated cooking control formula to perform cooking control on the food in the pot.

Optionally, the method further comprises: when the thermal condition of the cooker is changed, updating the temperature set value in the obtained cooking formula through the temperature offset value in the cooking control formula to obtain an updated cooking control formula; and when a cooking starting instruction of a user is received, the updated cooking control formula is adopted to perform cooking control on the food to be cooked in the pot.

Optionally, the method further comprises: the cooking control formula also comprises information of middle-edge temperature difference for representing temperature deviation of the middle part and the edge part of the pot bottom of the pot; in the cooking process, acquiring the measured temperature of the middle part of the pot bottom and the measured temperature of the edge part of the pot bottom of the pot; when the difference between the measured temperature of the middle part of the pot bottom of the pot and the measured temperature of the edge part of the pot bottom is determined to reach the set value of the middle-edge temperature difference, the firepower of the inner ring fire and the outer ring fire of the gas stove is adjusted until the difference between the measured temperature of the middle part of the pot bottom of the pot and the measured temperature of the edge part of the pot bottom of the pot is smaller than the set value of the middle-edge temperature difference.

Compared with the prior art, the technical scheme of the invention has the following advantages:

by means of the scheme, the cooking control formula corresponding to the food to be cooked in the obtained pot automatically controls the temperature of the pot, so that the automatic cooking of the food can be completed without participation of a user, the degree of automation of the food cooking can be improved, and the use experience of the user is improved.

Furthermore, by setting the temperature deviation value, when the thermal condition of the cookware changes, the temperature deviation value can be used for correcting the temperature set value in the obtained cooking control formula, so that the obtained cooking control formula can adapt to cookware with different thermal conditions for cooking control, and the accuracy and the flexibility of the cooking control of the cookware are improved.

Further, in the process of cooking food to be cooked in the cooker by using the obtained cooking control formula, the obtained cooking control formula is updated by using the temperature offset value due to the occurrence of the pot overflowing state, so that the obtained cooking control formula can be perfected in the cooking process, the pot overflowing state is eliminated, and the intelligent degree of cooking is improved.

Drawings

Fig. 1 is a flowchart of a cooking control method in an embodiment of the present invention;

fig. 2 is a flowchart of another cooking control method in the embodiment of the present invention;

fig. 3 is a flowchart of an overflow control method according to an embodiment of the present invention.

Detailed Description

In order to solve the above problems in the prior art, the embodiment of the invention adopts a technical scheme applied to a gas stove, namely a cooking control method, so as to realize automatic cooking of food by the gas stove. The gas stove obtains a cooking control formula corresponding to food to be cooked in the cooker, adjusts the firepower based on the cooking control formula, automatically controls the temperature of the cooker, enables a temperature measurement value of the cooker to reach a set value, can finish automatic cooking of the food without participation of a user, can improve the automation degree of food cooking, and improves the use experience of the user. For convenience of understanding and presentation, the structure of the gas range will be described first, and then the cooking control method according to the embodiment of the present invention will be described in detail.

Gas kitchen ranges

The gas stove can comprise a burner, an electric control gas valve, an ignition needle, a flame detection needle, a temperature sensor, a proximity sensor, an overflow sensor and a controller. The electric control gas valve can be composed of a plug valve and a driving motor, and an output shaft of the driving motor is connected with a valve rod shaft of the plug valve through a speed reducing mechanism. The electric control gas valve is arranged in an air inlet pipeline of the combustor and used for changing the gas flow or gas pressure delivered to the combustor and adjusting the fire power of the combustor. The ignition needle and the flame detection needle are fixed on the combustor and used for igniting the combustor and detecting whether flames exist on the combustor or not. The temperature sensor is assembled with a detection hole positioned in the middle of the burner and used for detecting the temperature of the middle of the bottom of the cooker placed on the gas stove. The proximity sensor is assembled with a detection hole of the burner and is used for detecting whether a cooker is arranged on the gas stove or not. The overflow sensor is a thermocouple assembled with the gas stove, the measuring end part of the overflow sensor is arranged in a water containing tray sleeved around the burner and used for detecting whether liquid in the pan overflows or not, and if the liquid overflows, the overflow state is confirmed. The electric control gas valve, the ignition needle, the flame detection needle, the temperature sensor, the proximity sensor and the overflow sensor are respectively and electrically connected with the controller. The controller is built-in with a cooking control recipe for cooking food. It should be noted that the overflow pan sensor can also adopt an ultrasonic sensor or a photoelectric sensor for foam detection, is arranged above the pan and is right opposite to a detection window arranged on the pan cover, can detect the foam and the height of the liquid surface in the pan through the detection window, and generates an overflow pan state when the foam height reaches a height threshold value, such as contacting the pan cover and a watch; in addition, overflow pot sensor can also choose for use ultrasonic sensor or photoelectric sensor who is used for displacement detection, set up in the top of pan, just relative with the pot cover of pan, detect the displacement motion of pot cover, has taken place the displacement motion when the pot cover, confirms to take place to overflow the pot state.

It should be noted that, the electronic control gas valve may also be composed of an electronic control flow valve, and the electronic control flow valve at least includes a 1 st electronic control flow valve and a 2 nd electronic control flow valve. The 1 st electric control flow valve is arranged in an air inlet pipeline of the burner inner ring fire, and the 2 nd electric control flow valve is arranged in an air inlet pipeline of the burner outer ring fire and used for respectively controlling the firepower of the burner inner ring fire and the firepower of the burner outer ring fire. The number of the electric control flow valves is consistent with that of the fire distribution air chambers of the burner.

Cooking control method

In order to make the technical objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

Fig. 1 shows a flow chart of a cooking control method in the practice of the present invention. Referring to fig. 1, a cooking control method in an embodiment of the present invention may include the steps of:

step S101: when receiving the instruction of selecting the cooking control formula, the controller obtains the cooking control formula corresponding to the food to be cooked from the internal memory.

In specific implementation, the cooking control formula comprises a corresponding relation between time and temperature, and comprises a plurality of cooking steps, each cooking step comprises information of a time set value and a temperature set value, and the information respectively corresponds to different cooking stages, such as stages of rapid heating, slow heating, high temperature and constant temperature, cooling and the like, and covers the whole cooking process of food to be cooked in the pot. Any one of the stages of rapid heating, slow heating, high temperature and constant temperature, cooling and the like can be formed by one cooking step, and can also be formed by two or more cooking steps.

Step S102: and cooking control is carried out on the food to be cooked in the pot by adopting the obtained cooking control formula.

In specific implementation, when a cooking control formula corresponding to food to be cooked in a cooker is acquired, the firepower of the gas stove can be controlled based on the acquired cooking control formula, the food to be cooked in the cooker is cooked, the measured temperature of the cooker reaches the set temperature, the cooking of the food to be cooked in the cooker is automatically completed, the automatic cooking of the food can be completed without participation of a user, the automation degree of the food cooking is improved, and the use experience of the user is improved.

The cooking control method in the embodiment of the present invention will be described in further detail with reference to fig. 2.

Fig. 2 illustrates a cooking control method in an embodiment of the present invention. Referring to fig. 2, the cooking control method in the embodiment of the present invention is suitable for a gas stove to automatically cook food in a pot, and may specifically be implemented by the following steps:

step S201: and when an instruction of selecting the cooking control formula is received, acquiring the cooking control formula selected by the user and corresponding to the food to be cooked in the pot.

In specific implementation, when a user needs to automatically cook food to be cooked in a pot, the pot can be placed on the gas stove at first, then the food to be cooked is stably placed in the pot, the pot cover is closed, the user selects a cooking control formula corresponding to the food to be cooked and a cooking mode from the cooking formula database, and the controller of the gas stove obtains the corresponding cooking control formula. In specific implementation, a plurality of cooking control formulas are stored in the cooking formula database, and the cooking control formulas in the cooking control formula database have preset corresponding relations with food to be cooked, and can be compiled and stored by users with cooking knowledge or by experts with professional cooking knowledge.

In an embodiment of the present invention, the cooking recipe database may be stored in a memory of the gas range controller. The controller of the gas range may obtain a corresponding cooking control recipe from the stored cooking recipe database when receiving an instruction for selection of the cooking control recipe. In another embodiment of the present invention, when receiving an instruction of a cooking control recipe selected by a user, the controller of the gas range may obtain the corresponding cooking control recipe from the cooking control recipes stored in the preset remote server. In another embodiment of the present invention, when the cookware does not obtain the cooking control recipe corresponding to the food to be cooked selected by the user from the cooking recipe database stored in the cookware itself, the corresponding cooking control recipe may be obtained from the cooking recipe database stored in the remote server.

In specific implementation, the manner in which the user sends the cooking control formula selection request to the gas stove and sends the cooking start instruction may be set according to actual needs, for example, the cooking control formula request and the cooking start instruction may be sent by a control device such as a mobile terminal in communication connection with the gas stove or a touch screen correspondingly disposed on the gas stove.

In a specific implementation, the cooking control recipe may include cooking schedule and program parameters, the cooking schedule including a correspondence between time and temperature; the cooking meter is characterized in that the cooking meter forms a table by a plurality of cooking steps, and the cooking steps comprise a time set value and a temperature set value, so that the cooking meter is very concise, easy to modify and wide in applicability. The relationship between time and temperature in the cooking table can also be described in other ways, such as a curve, but the data points contained in the cooking table are various and are not convenient to modify.

The cooking control recipe may be understood as a set of set values of controlled variables (such as temperature) that a gas stove heats a pot to realize the required firepower of food to be cooked in the pot and must be controlled. Wherein, the temperature variable in the cooking table is used for generating firepower with required size in the gas stove during the cooking process of food, and the time is used for controlling the duration time of the firepower required by cooking. The time in the cooking schedule will last through the entire cooking cycle, from the time the food is put into the pot and ignited, the time the cooking is completed, and finally the time goes out.

The cooking program in the implementation of the present invention is described below by taking cooking tables and program parameters of an optional cooking program as an example.

As shown in the following table, the cooking table includes 7 cooking steps, and each cooking step includes the set values of the "temperature", "fire power control manner", "valve opening degree" controlled variable item, and the set value of the "time" item.

Cooking table:

program parameters:

incubation temperature (/ ° c): 80; temperature control tolerance (/%): 2

Temperature offset value (/ deg.C): 5; sampling period (/ s): 10.

the controlled variables in the "cooking table" include "temperature", "fire control manner", "valve opening degree", and "time". Wherein "temperature" means the target temperature to be reached by the pot during cooking of the food, preferably the temperature of the inner surface of the pot bottom. The 'fire control mode' comprises two control modes of 'valve control' and 'temperature control' for the fire of the gas stove, wherein the valve control mode refers to adjusting the opening of an electric control gas valve to control the burner to heat a cooker; the temperature control mode means that the opening of the electric control gas valve is changed to adjust the fire force of the burner, so that the temperature measured value of the cookware is consistent with the set value of the temperature measured value. The "valve opening" indicates a target opening to be achieved by the electronically controlled gas valve at the "valve control" mode stage. In the stage of valve control mode, the set value of the valve opening degree is effective, and the controller operates the electric control gas valve to enable the opening degree of the electric control gas valve to reach the set value of the valve opening degree, such as 90% of the valve opening degree, so that the electric control gas valve can be used for heating a cooker by adopting large fire at the initial stage of cooking, and is open-loop control; in the temperature control mode stage, the controller performs operation processing based on the measured value of the pot temperature and the set value of the pot temperature detected by the temperature sensor, generates a corresponding control signal to change the opening of the electric control gas valve, and adjusts the firepower of the gas stove to enable the measured value of the pot temperature to be equivalent to the set value, thereby realizing closed-loop control. "time" means that the controlled variable is changed from the set value of the previous cooking step to the set value of the cooking step in a step-by-step manner within the time period of the cooking step, and is only suitable for describing the controlled variables of "temperature" and "valve opening" whose numerical values can be changed continuously; for the 1 st cooking step, the set value of the controlled variable of the last cooking step is understood to be the set value of the controlled variable of the 1 st cooking step.

In one embodiment, the "program parameters" may include "temperature keeping temperature", "temperature offset value", "temperature control tolerance", "sampling period".

Wherein, the 'holding temperature' represents the temperature of the food which needs to be maintained after the food is cooked.

The temperature deviation value represents a correction parameter for correcting the temperature control deviation of the temperature sensor, and is used for correcting the deviation of the temperature of the pot controlled by the temperature sensor relative to the set temperature so as to enable the heated temperature of the pot (the inner surface of the bottom of the pot) to be consistent with the expected target temperature. Factors that cause temperature control deviation of the temperature sensor include: the position of the temperature measuring point, the difference of the temperature sensor, the assembly deviation of the temperature sensor, the difference of the cookware (such as thickness, thinness and material) and the like. The measured value of the temperature of the pot detected by the temperature sensor is consistent with the sum of the temperature set value and the temperature deviation value acquired from the cooking table in terms of value, so that the actual value of the heated temperature of the pot can reach the corresponding temperature set value.

For example, the expected temperature of the inner surface of the bottom of the cookware is 100 ℃, the temperature set value is 100 ℃, and since the temperature measuring point detected by the temperature sensor is located on the lower surface of the bottom of the cookware, and there is thermal resistance between the lower surface and the inner surface of the bottom of the cookware, when the temperature detected by the temperature sensor is 100 ℃, the temperature of the inner surface of the bottom of the cookware is less than 100 ℃, if possible 98 ℃, the temperature deviation does not reach the set temperature value, namely there is a 2 ℃ deviation, and the temperature deviation can be corrected by a temperature deviation value, and the temperature deviation value is set as 2 ℃. In this state, the temperature set value is 100, the temperature deviation value is 2 ℃, the temperature detected by the temperature sensor is 102 ℃, and when the temperature detected by the temperature sensor reaches 102 ℃, the temperature of the inner surface of the cooker reaches 100 ℃, namely the expected target temperature.

For another example, when the temperature sensor is replaced, the thermal condition of the cookware is changed due to the difference and assembly deviation of the temperature sensor, and the thermal condition of the cookware needs to be adjusted before use, so that the cooking meter is suitable for the cookware with new thermal condition. An alternative method of tuning, e.g. at a certain temperature set point T₀A lower heating pot, a first-grade temperature detector is adopted to measure the temperature value T of the inner surface of the bottom of the pot₁Adjusting the fire power of the gas stove to T₁And T₀Equal, the measured value of the pot temperature detected by the temperature sensor is T_cMeasured value T of said pot temperature_cWith a set temperature value T₀The difference therebetween can be used as the initial set point for the temperature offset value.

In addition, the temperature offset value can be used to adjust the temperature setting value of each cooking step in the cooking program, for example, the temperature offset value is increased by 2 ℃, which is equivalent to the temperature setting value of each cooking step in the cooking program increased by 2 ℃. The set value of the temperature deviation value is modified, which is equivalent to the temperature set value of each cooking step in the integral upward or downward translation cooking meter, so that the same cooking meter can be suitable for cookers with different thicknesses and different materials, and the assembly deviation of the temperature sensor and the difference of the thermocouple can be modified, so that the cooking meter is suitable for cookers.

The program parameter "" temperature control tolerance "" in the cooking program can be used to represent the fluctuation range of the controlled target temperature of the cookware relative to the temperature setting value in the cooking program; for example, a temperature control tolerance of 2% represents a relative value of 2% for the maximum deviation of the fluctuation range between the measured value of the pot temperature (i.e., the controlled target temperature) and the pot temperature set point allowed by the controller, such as: if the pot temperature setting value is 100 ℃ and the temperature control tolerance is 2%, the measured value of the pot temperature (namely the controlled target temperature) is 98-102 ℃, and the measured value of the pot temperature is considered to be equivalent to the pot temperature setting value. The relative values of the temperature deviations are defined herein as: the relative value of the temperature deviation is ABS (measured value of temperature-set value)/set value of temperature 100%, the same as below. The "sampling period" represents the time interval between the controller acquiring the temperature set value, the fire power control mode set value, the valve opening set value from the cooking table and the measured value of the pot temperature from the temperature sensor, i.e. the frequency of the controller controlling the fire power of the gas stove.

When the set values of "jump temperature", "valve opening ratio" and "valve control opening" are set in the program parameters of the cooking control recipe, the controlled variables of "fire control mode" and "valve opening" can be omitted from the cooking table of the cooking control recipe. Thus, an alternative cooking recipe and recipe parameters are shown below, which includes only the set point for the "temperature" controlled variable and the set point for the "time" in the cooking recipe. Cooking table:

program parameters:

jump temperature (/ deg.C): 60, adding a solvent to the mixture;

valve control opening (/%): 90, respectively;

incubation temperature (/ ° c): 80;

temperature offset value (/ deg.C): 5;

temperature control tolerance (/%): 2

Sampling period (/ s): 10.

the 'jump temperature' in the cooking program represents the temperature point when the fire control mode of the gas stove is switched from the valve control mode to the temperature control mode and from the temperature control mode to the valve control mode. When the measured value of the temperature of the cooker is smaller than the set value of the jump temperature, the firepower of the gas stove can be controlled in a valve control mode; when the measured value of the temperature of the cooker is higher than the jump temperature set value, the firepower of the gas stove can be controlled by adopting a temperature control mode. The "valve control opening" characterizes the opening, e.g. 90%, of the electronically controlled gas valve to be achieved in the valve control mode. The cooking program has the defects that the cooking table only has one controlled variable of temperature, is very concise, and has the defect that the opening degree of the electric control gas valve in the valve control mode stage is a constant value, but the opening degree can also meet the cooking control requirement.

It should be noted that, in cooking food, the whole cooking process can control the fire power of the gas stove by adopting a temperature control mode, so that the temperature of the cooker reaches a temperature set value obtained from a cooking program, in this case, the controlled variables of the jump temperature and the valve control opening in the program parameters can be omitted, at this time, the cooking program is very simple, only the controlled variable of the temperature is in the cooking table of the cooking program, and only the parameters of the heat preservation temperature, the temperature deviation value and the temperature control tolerance are in the program parameters. At this time, the cooking control recipe is very simple in composition and convenient for a user to operate.

Step S202: the cooking steps in the obtained cooking control recipe are traversed in sequence.

In specific implementation, the cooking steps in the obtained cooking control formula are traversed according to the sequence, that is, the corresponding cooking steps are obtained according to the sequence of the execution time of the cooking steps in the obtained cooking control formula.

Step S203: and acquiring the information of the traversed time set value and the traversed temperature set value of the current cooking step.

In a specific implementation, each cooking step in the cooking control recipe includes information for a time set point and a temperature set point. When the corresponding cooking step is traversed, the traversed cooking step can be used as the current cooking step, and the information of the time set value and the temperature set value in the current cooking step is obtained. Wherein, the time setting value can be understood as the time length of the current cooking step; the temperature setting value can be understood as a target temperature to be reached by the measured temperature of the pot in a time period corresponding to the time setting value of the current cooking step.

Step S204: and dividing the time period corresponding to the acquired time setting value into a plurality of corresponding sampling periods according to a preset time length.

In specific implementation, the preset duration, that is, the duration of each sampling period, may be set according to actual needs. For example, when the time set value of the current cooking step is 3 minutes and the preset time period is 20s, the time set value of the current cooking step for 3 minutes may be divided into 9 consecutive sampling periods.

Step S205: and on the basis of the acquired temperature set value of the current cooking step, calculating the information of the temperature set value of each sampling period in the current cooking step by using an interpolation method, and controlling the gas stove to heat the cooker in each sampling period on the basis of the measured temperature of the cooker and the temperature set value corresponding to the sampling period until all sampling periods corresponding to the current cooking step are completely executed.

In an embodiment of the present invention, when the controller of the gas stove obtains the temperature setting value of the current cooking step, the controller may control the temperature of the cooker to gradually reach the temperature measurement value in the current cooking step according to a preset sampling period. Specifically, the controller of the gas stove divides a time period corresponding to a time setting value in a current cooking step into a plurality of corresponding sampling periods according to a preset sampling period, such as 10s, and obtains a temperature setting value corresponding to each sampling period by adopting a linear inner difference method according to a temperature setting value in a previous cooking step and a temperature setting value in the current cooking step. In each divided sampling period, the controller of the gas stove acquires the temperature measurement value of the cookware detected by the temperature sensor, compares the temperature measurement value with the temperature setting value of the corresponding cookware, generates a corresponding control signal according to the comparison result, and controls the gas stove to continuously heat the cookware until the temperature measurement value of the cookware reaches the corresponding temperature setting value. And circulating the steps until all sampling periods of the current cooking step are executed.

It should be noted that, when the current cooking step is the first cooking step in the cooking table of the obtained cooking control recipe, the corresponding previous cooking step does not exist, and at this time, at the start time of the current cooking step, the temperature measurement value of the pot may be collected first and used as the temperature setting value of the previous cooking step, or the temperature setting value of the first cooking step may be used as the temperature setting value of the previous cooking step, which is not limited herein.

In particular implementation, in order to achieve uniform control of the temperature of the pot so as to more accurately perform cooking control on food to be cooked in the pot, the temperature sensor detecting the temperature of the pot may include a first temperature sensor and a second temperature sensor. Wherein, the first temperature sensor is used for detecting the temperature of pan bottom central part, and the second temperature sensor is used for detecting the temperature of pan limit portion. In the cooking process, when the temperature of a cooker is measured, the measured temperature of the center of the bottom of the cooker and the measured temperature of the edge of the bottom of the cooker can be respectively obtained, the measured temperature of the center of the bottom of the cooker and the measured temperature of the edge of the bottom of the cooker are compared, when the measured temperature of the center of the bottom of the cooker and the measured temperature of the edge of the bottom of the cooker are determined to be greater than a set value of a middle-edge temperature difference in a corresponding cooking program, a controller operates a 1 st electric control flow valve and a 2 nd electric control flow valve to respectively adjust inner ring fire and outer ring fire of a gas stove until the difference value between the measured temperatures of the center of the bottom of the cooker and the measured temperature of the edge of the bottom of the cooker is smaller than a threshold value, so that the temperature of the cooker is more uniform, more accurate cooking control can be performed on food, and the cooking quality is improved.

Step S206: when the current cooking step is determined to be completed, judging whether all the cooking steps in the obtained cooking control formula are completed; when the judgment result is yes, step S207 may be performed; otherwise, the cooking operation may be ended.

Step S207: the next cooking step is performed.

In a specific implementation, when the current cooking step is completed and the cooking step in the obtained cooking control recipe is not yet completed, the next cooking step may be continuously executed, based on the information of the time setting value and the temperature setting value in the next cooking step, in each control period, the temperature setting value corresponding to each control period is obtained from the next cooking step by using an interpolation method, and the execution is started from step S203 until all the cooking steps in the obtained cooking control recipe are completely executed.

In specific implementation, in order to accurately control the temperature of the pot in the cooking process, so as to perform more optimal cooking control on food to be cooked in the pot, the cooking control method in the embodiment of the invention can modify the obtained cooking control formula according to actual needs, so that the updated cooking control formula can be more suitable for cooking the food.

Referring to fig. 3, a cooking control method in the embodiment of the present invention is adapted to eliminate an overflow state by modifying an obtained cooking control recipe during a cooking process, and may specifically be implemented by the following steps:

step S301: in the cooking process, the controller of the gas stove monitors whether the cooker is in an overflowing state or not based on a detection signal of the overflowing sensor.

In specific implementation, in the process of performing cooking control on food to be cooked in the cookware by using the obtained cooking control formula, the controller of the gas stove can use a corresponding pot overflow sensor to monitor the pot overflow state of the cookware so as to determine whether the cookware is in the pot overflow state.

In an embodiment of the invention, the controller of the gas stove can detect the height of the foam in the cooker during the cooking process by adopting the sensor which is arranged on the cooker and used for detecting the foam, and when the height of the foam in the cooker is determined to reach a preset height threshold value, the cooker can be determined to be in the overflowing state. Wherein, the preset height threshold is smaller than the depth of the cookware, and can be determined in an experimental calibration mode. If the sensor for detecting the foam does not have a spatial resolution function, the foam detection can be realized by adopting a sensor array.

In another embodiment of the invention, when the liquid in the pot is determined to overflow through detection, the pot is determined to be in an overflow state, and the overflow cannot be avoided.

In another embodiment of the invention, when the pot cover of the pot is detected to be converted from the static state to the moving state, the pot can be determined to be in the pot overflowing state.

Step S302: when detecting the pan is in the time of overflowing the pot state, control the gas-cooker reduces the firepower gradually right the pan heats up, until the state of overflowing the pot is eliminated.

In the concrete implementation, when confirming through detecting the pan is in when overflowing the pot state, in order to avoid food in the pan to spill over the dirty and influence the culinary art quality of top of a kitchen range that causes outside the pan, the controller of gas-cooker can control the gas-cooker immediately and reduce firepower and heat the pan to reduce the temperature of pan, thereby avoid the food in the pan to spill over the pan, in order to eliminate and overflow the pot state. Step S303: and increasing the preset number of times of overflowing the pot by a preset numerical value.

In specific implementation, a preset overflow counter can be adopted to count the number of overflow times. When detecting the pan at every turn and being in the time of overflowing the pot state, can increase the predetermined numerical value with predetermined excessive pot number of times, if increase 1 etc..

Step S304: judging whether the recorded times of overflowing the pot reach a preset time threshold value; when the judgment result is yes, step S305 may be performed; otherwise, execution may continue from step S301.

In a specific implementation, the preset number threshold may be set according to an actual requirement, and is not limited herein.

Step S305: judging whether the difference value between the temperature set value of the sampling period at the overflowing moment and the temperature set value of the current cooking step exceeds a preset range or not; when the judgment result is yes, step S306 may be performed; otherwise, no operation may be performed.

In specific implementation, when it is determined that the pot is in the pot overflow state, the temperature setting value of the pot in the sampling period to which the pot overflow state occurs may be compared with the temperature setting value of the cooking step to which the pot overflow state occurs, and the difference between the temperature setting value of the pot obtained in the sampling period to which the pot overflow state occurs and the temperature setting value of the cooking step to which the pot overflow state occurs may be calculated to determine whether the difference is within a preset range, and the difference is identified as the 1 st adjustment value. The preset range can be set according to the requirement of cooking control, such as 5-10.

Step S306: and reducing the temperature set value in the current cooking step or the current cooking step and the subsequent cooking step in the obtained cooking formula by a preset numerical value so as to update the temperature set value in the current cooking step in the obtained cooking control formula.

In specific implementation, in order to avoid cooking control by using the obtained cooking control recipe subsequently, if the overflow count is greater than the preset threshold, when the temperature setting value of the pot corresponding to the sampling period at the time of occurrence of the overflow state is lower than the temperature setting value of the current cooking step, for example, a difference between the temperature setting value of the pot corresponding to the sampling period and the temperature setting value of the cooking step is 5 to 10 ℃, which indicates that the temperature setting value of the current cooking step in the obtained cooking control recipe may not be adapted to the pot due to a change in thermal conditions of the pot. In other words, the obtained temperature setting value of the current cooking step in the cooking control formula is too high, at this time, the controller of the gas stove reduces the setting value of the temperature deviation value in the cooking control formula, which is equivalent to that the temperature setting value of the current cooking step of the cooking control formula or the temperature setting values of the current cooking step and the subsequent cooking step are simultaneously translated downwards, and the translation amount is the reduction amount of the temperature deviation value, so that the controlled temperature of the cooker is integrally translated downwards, and therefore, when the updated cooking control formula is continuously adopted to perform cooking control on food in the cooker in the subsequent cooking process, the controlled target temperature of the cooker can be reduced, the firepower of the gas stove is reduced, and the occurrence of pot overflow is reduced until the pot overflow is eliminated.

In a particular implementation, the magnitude of the decrease in the temperature offset value may be associated with a 1 st adjustment magnitude. For example, the temperature offset value may be reduced to a fractional amount of the 1 st adjustment magnitude, such as 1/3, 1/2, or 2/3, where the reduction magnitude is the 1 st adjustment magnitude. When the acquired temperature set value is higher than the temperature set value of the cooking step, if the acquired temperature set value is 2-5 ℃ different from the temperature set value of the current cooking step, namely the temperature set value of the sampling period of the pot overflowing time is close to the temperature set value of the current cooking step, the controller of the gas stove reduces the temperature set value of the current cooking step in the cooking control formula and reduces the temperature set values of the subsequent cooking steps of which the temperature set values are not less than the temperature set values of the cooking step, so that the controlled temperature of the pot temperature and the rising rate of the pot temperature are reduced, the firepower of the gas stove is gradually reduced, and the occurrence of pot overflowing is reduced until eliminated.

It should be noted that, after the overflowing occurs, the controller of the gas stove may also decrease the set value of the temperature offset value in the cooking control recipe and the set value of the current cooking step temperature at the same time. In this case, in order to avoid the controlled target temperature of the bottom of the pot from being too low due to the overshoot, the sum of the reduction range of the temperature deviation value and the reduction range of the temperature setting value of the current cooking step should be smaller than the 1 st adjustment value.

In a specific implementation, after the controller of the gas stove modifies one of the cooking control recipes, the overflow counter may be cleared, that is, the overflow counter will start counting again from zero.

Step S307: and continuing to cook and control the food to be cooked in the pot by adopting the updated current cooking step.

In specific implementation, after the controller of the gas stove modifies the cooking control formula, for example, after the temperature set value of the cooking step is modified, the controller of the gas stove can continuously judge the pot overflowing state based on the signal of the pot overflowing sensor in the continuous execution process of the current cooking step. And when the controller of the gas stove judges the pot overflowing state again and the pot overflowing frequency reaches the preset frequency threshold value, the controller of the gas stove modifies the cooking control formula again according to the method, and the steps are repeated in a circulating mode until the current cooking step is executed.

Step S308: when the current cooking step is determined to be completed, judging whether all the cooking steps in the obtained cooking control formula are completed; when the judgment result is yes, step S207 may be performed; otherwise, the cooking operation may be ended.

Step S309: the next cooking step is performed.

In a specific implementation, when the current cooking step is completed and the cooking step in the obtained cooking control recipe is not yet completed, the next cooking step may be continuously executed, based on the information of the time setting value and the temperature setting value in the next cooking step, in each control period, the temperature setting value corresponding to each control period is obtained from the next cooking step by using an interpolation method, and the execution is started from step S301 until all the cooking steps in the obtained cooking control recipe are completely executed.

The method and system of the embodiments of the present invention have been described in detail, but the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.