Steaming box control method and device and storage medium

Abstract

The invention discloses a steam box control method and device and a storage medium. The method comprises the steps that the set working temperature and the set working humidity of a steam box are obtained; according to the set working temperature, a target parameter control model corresponding to the set working temperature is matched from a preset parameter control model library; using the target parameter control model to determine target heating time corresponding to the set working humidity; controlling the steam generator to work according to the target heating time; according to the method, the mapping relation between the heating time of the steam generator and the relative humidity of the cavity is established, the humidity of the cavity can be controlled without using a humidity detection device, and the steam box can be conveniently controlled to meet the set humidity requirement and temperature requirement.

Description

Technical Field

[0001] The present application relates to the field of smart home appliances, and in particular to a steamer control method, device and storage medium. Background Art

[0002] Steamers are convenient kitchen cooking appliances that are widely used by millions of families. Steamers use the physical properties of water boiling point to generate 100°C saturated steam in the steam generator to cook food. With the improvement of quality of life and the development of family recipes, the humidity inside the steam chamber has gradually become an important part of cooking regulation during the cooking process.

[0003] In the prior art, a built-in humidity sensor or humidity probe is set in the steamer to collect humidity data inside the cavity, and then corresponding control operations are performed according to the humidity data. However, the humidity sensing material of the humidity sensor has high requirements for the temperature environment. The humidity sensor that can meet the requirements of the steamer cooking condition is expensive and has a limited service life. At the same time, due to the offset installation characteristics of the humidity sensor in the cavity, the humidity sensor data needs to be calibrated before use, which is complicated.

[0004] Therefore, how to conveniently control the steamer to meet the set humidity requirements is a technical problem that needs to be solved urgently. Summary of the invention

[0005] The present application provides a steamer control method, device and storage medium, which can conveniently control the steamer to meet the set humidity requirements.

[0006] On the one hand, an embodiment of the present application provides a steamer control method, the method comprising:

[0007] Get the set working temperature and set working humidity of the steam box;

[0008] According to the set working temperature, a target parameter control model corresponding to the set working temperature is matched from a preset parameter control model library; the preset parameter control model library includes a plurality of preset parameter control models; each preset working temperature corresponds to a preset parameter control model; the preset parameter control model represents a mapping relationship between the relative humidity of the cavity of the steam box at the preset working temperature and the heating time of the steam generator; the steam generator is arranged at the bottom of the cavity of the steam box;

[0009] Determining a target heating time corresponding to the set working humidity by using the target parameter control model;

[0010] The steam generator is controlled to operate according to the target heating time.

[0011] In an exemplary embodiment, the method further comprises:

[0012] Determine a plurality of different preset operating temperatures;

[0013] For each preset working temperature, obtaining a first temperature value and a cavity absolute humidity value corresponding to different heating times at the preset working temperature; the first temperature value represents a temperature value detected at the steam generator;

[0014] Determine the mapping relationship between the relative humidity of the cavity and the heating time according to the first temperature value and the absolute humidity value of the cavity corresponding to different heating times, and obtain the preset parameter control model corresponding to the preset working temperature;

[0015] The preset parameter control models corresponding to different preset working temperatures are stored to obtain the preset parameter control model library.

[0016] In an exemplary embodiment, determining the mapping relationship between the relative humidity of the cavity and the heating time according to the first temperature value and the absolute humidity value of the cavity corresponding to different heating times includes:

[0017] Determining a first mapping relationship between the absolute humidity value of the cavity and the heating time according to the first temperature values ​​and the absolute humidity values ​​of the cavity corresponding to different heating times;

[0018] Obtain water temperature attenuation data and cavity absolute humidity attenuation data corresponding to different heating times; the water temperature attenuation data is the difference between the first temperature value at the end of heating and the first temperature value after cooling after heating; the cavity absolute humidity attenuation data is the difference between the cavity absolute humidity value at the end of heating and the cavity absolute humidity value after cooling after heating;

[0019] Determine a second mapping relationship between the cavity absolute humidity attenuation and the heating time according to the water temperature attenuation data and the cavity absolute humidity attenuation data;

[0020] A mapping relationship between cavity relative humidity and heating time is determined according to the first mapping relationship, the second mapping relationship and the preset working temperature.

[0021] In an exemplary embodiment, determining a first mapping relationship between the absolute humidity value of the cavity and the heating time according to the first temperature value and the absolute humidity value of the cavity corresponding to different heating times includes:

[0022] determining a third mapping relationship between the first temperature value and the heating time according to the power of the steam box and the water intake of the steam box;

[0023] According to the first temperature values ​​and the absolute humidity values ​​of the cavity corresponding to different heating times, a fourth mapping relationship between the first temperature value and the absolute humidity value of the cavity is obtained through data fitting;

[0024] The first mapping relationship between the absolute humidity of the cavity and the heating time is determined according to the third mapping relationship and the fourth mapping relationship.

[0025] In an exemplary embodiment, determining a second mapping relationship between the cavity absolute humidity attenuation and the heating time according to the water temperature attenuation data and the cavity absolute humidity attenuation data includes:

[0026] Determining a fifth mapping relationship between the water temperature attenuation and the heating time according to the power and cavity volume of the steam box;

[0027] According to the water temperature attenuation data and the cavity absolute humidity attenuation data corresponding to different heating times, a sixth mapping relationship between the water temperature attenuation and the cavity absolute humidity attenuation is obtained through data fitting;

[0028] The second mapping relationship between the cavity absolute humidity attenuation and the heating time is determined according to the fifth mapping relationship and the sixth mapping relationship.

[0029] In an exemplary embodiment, after the steam generator is heated, the method further comprises:

[0030] periodically acquiring a second temperature value, where the second temperature value represents a temperature value inside the cavity of the steam box;

[0031] When the second temperature value is lower than the set working temperature, the heating tube is controlled to perform auxiliary heating, and the heating tube is arranged above the cavity of the steam box.

[0032] In an exemplary embodiment, the method further comprises:

[0033] During the auxiliary heating process of the heating tube, an image acquisition device is used to acquire an image of food in the cavity, and the type of food is determined based on the image of food;

[0034] According to the food category, the exhaust device is periodically turned on at a preset time interval corresponding to the food category, and the exhaust device is used to dehumidify the steam box.

[0035] On the other hand, the present application also provides a steam box control device, the device comprising:

[0036] An acquisition module is used to acquire the set working temperature and set working humidity of the steam box;

[0037] A matching module, for matching a target parameter control model corresponding to the set working temperature from a preset parameter control model library according to the set working temperature; the preset parameter control model library includes a plurality of preset parameter control models; each preset working temperature corresponds to a preset parameter control model; the preset parameter control model represents a mapping relationship between the relative humidity of the cavity of the steam box at the preset working temperature and the heating time of the steam generator; the steam generator is arranged at the bottom of the cavity of the steam box;

[0038] a target heating time determination module, configured to determine a target heating time corresponding to the set working humidity by using the target parameter control model;

[0039] A control module is used to control the steam generator to operate according to the target heating time.

[0040] On the other hand, the present application also provides an electronic device, which includes a processor and a memory, wherein the memory stores at least one instruction or at least one program, and the at least one instruction or the at least one program is loaded and executed by the processor to implement the steamer control method as described above.

[0041] On the other hand, the present application also provides a computer storage medium, which stores at least one instruction or at least one program, and the at least one instruction or at least one program is loaded and executed by a processor to implement the steamer control method as described above.

[0042] On the other hand, the present application also provides a computer program product or a computer program, which includes computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes to implement the steamer control method as described above.

[0043] The steamer control method provided by this application has the following technical effects:

[0044] The embodiment of the present application obtains the set working temperature and set working humidity of the steamer; matches the target parameter control model corresponding to the set working temperature from the preset parameter control model library according to the set working temperature; determines the target heating time corresponding to the set working humidity by using the target parameter control model; controls the steam generator to work according to the target heating time, thereby being able to conveniently control the steamer to meet the set humidity requirements and temperature requirements. The present application pre-establishes the mapping relationship between the heating time of the steam generator at different preset working temperatures and the relative humidity of the cavity, and can achieve cavity humidity control on the basis of the traditional steamer structure without adding an additional humidity detection device, with low cost and high control accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0046] Figure 1 This is an application environment diagram of the steamer control method provided in the embodiment of the present application.

[0047] Figure 2 It is a flow chart of a steamer control method provided in an embodiment of the present application.

[0048] Figure 3 It is a flow chart of obtaining a preset parameter control model provided in an embodiment of the present application.

[0049] Figure 4 It is a schematic diagram of the process of establishing the first mapping relationship provided in an embodiment of the present application.

[0050] Figure 5 It is a schematic diagram of the process of establishing the second mapping relationship provided in an embodiment of the present application.

[0051] Figure 6 It is a schematic diagram of the first temperature value and the absolute humidity value of the cavity corresponding to different heating times provided in an embodiment of the present application.

[0052] Figure 7 It is a schematic diagram of water temperature attenuation data and cavity absolute humidity attenuation data corresponding to different heating times provided in an embodiment of the present application.

[0053] Figure 8 This is a steamer workflow flowchart provided in an embodiment of the present application.

[0054] Fig. 9 It is a structural schematic diagram of the steamer control device provided in an embodiment of the present application.

[0055] Fig.10 This is a hardware structure block diagram of a server of a steamer control method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0057] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or server that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0058] Figure 1 This is an application environment diagram of the steamer control method provided in the embodiment of the present application.

[0059] The steamer control method provided in the embodiment of the present application is applied to the steamer. Figure 1 Taking the steamer 100 as an example, the steamer 100 includes a cavity 101, an exhaust device 102, a heating tube 103, a steam generator 104, a first temperature detection device 105, and a second temperature detection device 106. During the cooking process, the food to be cooked can be placed in the cavity 101, and then the temperature and humidity are set. The steamer 100 starts the cooking program, and the steam generator 104 generates saturated water vapor to heat the food to be cooked. The first temperature detection device 105 is used to detect the temperature value at the location of the steam generator 104, and the second temperature detection device 106 is used to detect the temperature value inside the cavity 101. The heating tube 103 is used for auxiliary heating. The exhaust device 102 is used for dehumidification.

[0060] First, regarding the humidity detection solution, existing steamers often use humidity sensors for detection. However, the humidity sensor usually detects the environment with a maximum temperature of 50°C or less and a humidity of 95% or less. The steamer cavity is a high-temperature and high-humidity environment during the cooking process. Few humidity sensors on the market can work for a long time in this environment. It is difficult to select humidity sensors. The humidity sensing materials that meet the high temperature and high humidity requirements are complex, the airtightness requirements are high, the cost is high, and the service life is limited.

[0061] Secondly, the sensor in the steamer cavity is installed in an offset position, that is, the sensor is generally fixed above the inner wall of the steamer cavity, and some are placed on the left and right sides of the inner wall. Therefore, there is a certain deviation between the detection data of the humidity sensor and the data of the center of the cavity, and data calibration is required before humidity detection. For steamers with different cavities and different positions, the sensor calibration is complicated and has poor versatility. The steamer control method provided in the present application has no new modules on the basis of the traditional steamer structure. When in use, no humidity sensor is required. The four commonly used modules of the steamer: temperature detection device, upper heating tube, built-in steam generator, and external exhaust fan can be used to achieve the set working humidity and working temperature, with low cost and high reliability. Specifically, the specific process of the steamer control method provided in the present application is as follows: Figure 2 shown.

[0062] Figure 2 It is a flow chart of a steamer control method provided in an embodiment of the present application.

[0063] S201: Obtaining the set working temperature and set working humidity of the steam box.

[0064] The set working temperature and set working humidity of the steamer can be manually set by the user according to actual needs, or can be read by the steamer according to the preset working temperature and working humidity in the preset recipe.

[0065] S203: According to the set working temperature, a target parameter control model corresponding to the set working temperature is matched from a preset parameter control model library.

[0066] The preset parameter control model library includes multiple preset parameter control models; each preset working temperature corresponds to a preset parameter control model; the preset parameter control model characterizes the mapping relationship between the relative humidity of the cavity of the steam box at the preset working temperature and the heating time of the steam generator.

[0067] The preset parameter control model stored in the preset parameter control model library represents the mapping relationship between the relative humidity of the cavity and the heating time of the steam generator at different preset working temperatures. It should be noted that the model parameters of the preset parameter control model are determined according to the corresponding preset working temperature. For example, when the preset working temperature is 50 degrees, the corresponding preset parameter control model is model A. For another example, when the preset working temperature is 100 degrees, the corresponding preset parameter control model is model B. The model parameters of model A and model B are different.

[0068] It should be noted that in the embodiments of the present application, the temperature data, cavity capacity, water intake, heating power and other parameters detected by the temperature detection device in the traditional steamer are used to establish a universal mapping relationship between relative humidity and steam generator heating time through data fitting to achieve steamer humidity control.

[0069] The steam generator is arranged at the bottom of the cavity of the steam box, for example Figure 1 The steam generator 104 in.

[0070] S205: Determine a target heating time corresponding to the set working humidity by using the target parameter control model.

[0071] Since the target parameter control model represents the mapping relationship between the relative humidity of the cavity and the heating time of the steam generator at a set working temperature, the target heating time of the steam generator can be obtained by substituting the set working humidity into the target parameter control model.

[0072] S207: Control the steam generator to operate according to the target heating time.

[0073] After the steam generator has heated for the target heating time, it can reach the set working temperature and the set working humidity, thereby realizing the control of the temperature and humidity of the steam box.

[0074] In the embodiment of the present application, the set working temperature and set working humidity of the steam box are obtained; according to the set working temperature, a target parameter control model corresponding to the set working temperature is matched from the preset parameter control model library; the target heating time corresponding to the set working humidity is determined by using the target parameter control model; the steam generator is controlled to work according to the target heating time, so that the steam box can be conveniently controlled to meet the set humidity requirements and temperature requirements. The present application pre-establishes a mapping relationship between the heating time of the steam generator at different preset working temperatures and the relative humidity of the cavity, and can achieve cavity humidity control on the basis of the traditional steam box structure without adding an additional humidity detection device, with low cost and high control accuracy.

[0075] In one embodiment, the method provided in the present application also includes: determining multiple different preset working temperatures; for each preset working temperature, obtaining the first temperature value and the absolute humidity value of the cavity corresponding to different heating times at the preset working temperature; the first temperature value represents the temperature value detected at the location of the steam generator; according to the first temperature value and the absolute humidity value of the cavity corresponding to different heating times, determining the mapping relationship between the relative humidity of the cavity and the heating time, and obtaining the preset parameter control model corresponding to the preset working temperature; storing the preset parameter control models corresponding to different preset working temperatures to obtain the preset parameter control model library.

[0076] This embodiment is a process of establishing a preset parameter control model library. In one implementation, the preset parameter control model library formed by the preset parameter control model can be stored in the control system carried by the steamer, so as to be called to obtain the target heating time when the steamer is actually used. A plurality of different preset operating temperatures can be commonly used operating temperatures of the steamer. The absolute humidity value of the cavity can be obtained by a humidity sensor.

[0077] It should be noted that the humidity sensor in this application is only used when determining the preset parameter control model. When the steamer is actually used, since the preset parameter control model library has been stored, the humidity value can be determined by the temperature value, so there is no need to use a humidity sensor to obtain the humidity value. The humidity sensor can be an external independent device and does not need to be integrated in the steamer. The process of obtaining the preset parameter control model in this application is as follows Figure 3 shown.

[0078] Figure 3 It is a flow chart of obtaining a preset parameter control model provided in an embodiment of the present application.

[0079] In one embodiment, determining the mapping relationship between the relative humidity of the cavity and the heating time according to the first temperature values ​​and the absolute humidity values ​​of the cavity corresponding to different heating times includes:

[0080] S301: determining a first mapping relationship between the absolute humidity value of the cavity and the heating time according to first temperature values ​​and absolute humidity values ​​of the cavity corresponding to different heating times.

[0081] The steamer can be regarded as a closed environment when it is working. In a closed environment, the temperature and humidity have a dynamic balance relationship, so the temperature can be used to control the humidity. Figure 4 Schematic diagram of the process of establishing the first mapping relationship provided in the embodiment of the present application. Figure 4 illustrate.

[0082] S303: Obtain water temperature attenuation data and cavity absolute humidity attenuation data corresponding to different heating times; the water temperature attenuation data is the difference between the first temperature value at the end of heating and the first temperature value after cooling after heating; the cavity absolute humidity attenuation data is the difference between the cavity absolute humidity value at the end of heating and the cavity absolute humidity value after cooling after heating.

[0083] After the heating time is reached, the steam generator stops heating. As time goes by, the water temperature will decay, and the water temperature decay represents the difference between the first temperature value at the end of heating and the first temperature value after cooling after heating. At the same time, the temperature inside the cavity will also drop, the water vapor in the cavity will gradually liquefy, and the absolute humidity of the cavity will also decay. The cavity absolute humidity decay data represents the difference between the absolute humidity value of the cavity at the end of heating and the absolute humidity value of the cavity after cooling after heating.

[0084] S305: Determine a second mapping relationship between the cavity absolute humidity attenuation and the heating time according to the water temperature attenuation data and the cavity absolute humidity attenuation data.

[0085] Under ideal conditions, all the heating energy of the steam generator is used to increase the water temperature, and the energy absorbed by the liquid water is completely used for evaporation. Therefore, the steam generator heating time is approximately mapped to the water temperature decay, and the water temperature decay indirectly causes the gaseous water vapor to liquefy, causing humidity decay. Therefore, the steam generator heating time is indirectly mapped to the humidity decay.

[0086] Figure 5 Schematic diagram of the process of establishing the second mapping relationship provided in the embodiment of the present application. Figure 5 illustrate.

[0087] S307: Determine a mapping relationship between cavity relative humidity and heating time according to the first mapping relationship, the second mapping relationship, and the preset working temperature.

[0088] The relative humidity is the ratio of the result obtained by subtracting the absolute humidity attenuation of the cavity from the absolute humidity of the cavity to the saturated humidity of the saturated water vapor. The saturated humidity of the saturated water vapor is determined according to the preset working temperature. Therefore, according to the first mapping relationship between the absolute humidity value of the cavity and the heating time, the second mapping relationship between the absolute humidity attenuation of the cavity and the heating time, and the preset working temperature, the mapping relationship between the relative humidity of the cavity and the heating time can be obtained, thereby obtaining the preset parameter control model.

[0089] Figure 4 It is a schematic diagram of the process of establishing the first mapping relationship provided in an embodiment of the present application. Figure 4This can be regarded as a specific example of the method shown in step S301. Determining a first mapping relationship between the absolute humidity value of the cavity and the heating time according to the first temperature value and the absolute humidity value of the cavity corresponding to different heating times includes:

[0090] S401: Determine a third mapping relationship between a first temperature value and a heating time according to the power of the steamer and the water intake of the steamer.

[0091] When the temperature remains unchanged, the ambient air pressure and water vapor pressure also have a dynamic equilibrium relationship. Therefore, when the steamer cavity is sealed, the total water intake of the steam generator is the same, and the operating temperature is the same, the steam generator heating time is linearly related to the water vapor content, and the amount of water vapor in the sealed cavity can be approximately equal to the absolute humidity, that is, the steam generator heating time is linearly related to the humidity. According to the law of conservation of energy, the energy consumed by the steam generator is the same as the energy required to heat the water to boil, that is, the steam generator heating time is also linearly related to the first temperature value.

[0092] Specifically, according to the law of conservation of energy, that is, the energy consumed by the steam generator is equal to the energy required to heat the water to boil, formula (1) is obtained. Using the specific heat capacity of water and the water intake, formula (2) is derived on the basis of formula (1), and formula (3) is obtained after abstracting the constants. Formula (3) represents the third mapping relationship between the first temperature value and the heating time of the steam generator.

[0093] Pt=cmΔT (1)

[0094]

[0095] Where P is the heating power, t is the heating time, c is the specific heat capacity, m is the water mass, ΔT is the temperature difference, T max is the first temperature value, i.e., the highest temperature value detected at the steam generator, T min is the lowest temperature detected at the steam generator, which can be understood as the initial water temperature, L 水 is the water inflow, ρ is the water density, A and B are constant coefficients.

[0096] S403: According to the first temperature values ​​and the absolute humidity values ​​of the cavity corresponding to different heating times, a fourth mapping relationship between the first temperature value and the absolute humidity value of the cavity is obtained through data fitting.

[0097] Figure 6 It is a schematic diagram of the first temperature value and the absolute humidity value of the cavity corresponding to different heating times provided in an embodiment of the present application.

[0098] Formula (3) represents the steam generator heating time t and the first temperature value T maxThe formula is a direct relationship. This scheme is to find the relationship between the heating time and the absolute humidity value, and its data is an indirect relationship. Since the first temperature value and the absolute humidity value have a certain dynamic equilibrium relationship, therefore, according to Figure 6 The first temperature value shown is fitted with the actual detection data of the absolute humidity value by a mathematical formula, so as to obtain the relationship between the heating time and the absolute humidity value. The indirect relationship can be obtained by data fitting. In one implementation, a univariate linear or multivariate function can be used for fitting, so that the fitting result is more accurate. In the embodiment of the present application, linear fitting is used as an example for explanation.

[0099] S405: Determine the first mapping relationship between cavity absolute humidity and heating time according to the third mapping relationship and the fourth mapping relationship.

[0100] Taking the fourth mapping relationship obtained by linear fitting of the first temperature value and the cavity absolute humidity value as an example, according to the third mapping relationship and the fourth mapping relationship, formula (4) can be obtained. Formula (4) represents the first mapping relationship between the cavity absolute humidity and the heating time.

[0101]

[0102] Among them, G 绝对含湿max is the absolute moisture content, C and D are constant coefficients.

[0103] Figure 5 It is a schematic diagram of the process of establishing the second mapping relationship provided in an embodiment of the present application. Figure 5 This can be regarded as a specific example of the method shown in step S305. Determining the second mapping relationship between the cavity absolute humidity attenuation and the heating time according to the water temperature attenuation data and the cavity absolute humidity attenuation data includes:

[0104] S501: determining a fifth mapping relationship between the water temperature attenuation and the heating time according to the power and cavity volume of the steam box;

[0105] Specifically, according to the law of conservation of energy, that is, the heating energy of the steam generator is equal to the sum of the temperature rise of the water vapor in the cavity and the water temperature rise, formula (5) is obtained, then the water temperature decay can be extracted separately to obtain formula (6). Since the volume of water vapor can be approximately equal to the volume of the cavity, according to the water vapor mass formula (7), formula (6) can be rewritten to obtain formula (8), which represents the fifth mapping relationship between water temperature decay and heating time.

[0106] Pt=c 气 m 气 ΔT 气温 +c 水 m 水ΔT 水温 (5)

[0107]

[0108] m 气 =ρ 气 D 容 (7)

[0109] ΔT 水温 =G*Pt-H*D 容 (8)

[0110] Where P is the heating power, t is the heating time, c 气 is the specific heat capacity of water vapor, m 气 is the mass of water vapor, ΔT 气温 is the water vapor temperature difference, c 水 is the specific heat of water, m 水 is the water quality, ΔT 水温 is the water temperature attenuation, ρ 气 is the water vapor density, D 容 is the cavity capacity, G and H are constant coefficients.

[0111] S503: According to the water temperature attenuation data and the cavity absolute humidity attenuation data corresponding to different heating times, a sixth mapping relationship between the water temperature attenuation and the cavity absolute humidity attenuation is obtained through data fitting.

[0112] Figure 7 It is a schematic diagram of water temperature attenuation data and cavity absolute humidity attenuation data corresponding to different heating times provided in an embodiment of the present application.

[0113] Formula (8) represents the steam generator heating time t and water temperature decay ΔT 水温 The formula is a direct relationship. This scheme is to find the relationship between the heating time and the absolute humidity attenuation of the cavity. Its data is an indirect relationship. Since the water temperature attenuation and the absolute humidity attenuation of the cavity have a certain dynamic equilibrium relationship, according to the following Figure 7 The actual detection data of the water temperature attenuation and the cavity absolute humidity attenuation are fitted with a mathematical formula to obtain the relationship between the heating time and the cavity absolute humidity attenuation. This indirect relationship can be obtained through data fitting. In one implementation, a univariate linear or multivariate function can be used for fitting, so that the fitting result is more accurate. In the embodiment of the present application, linear fitting is used as an example to obtain formula (9).

[0114] ΔG 湿度 =I*ΔT 水温 +J (9)

[0115] Among them, ΔG 湿度is the absolute humidity attenuation of the cavity, ΔT 水温 is the water temperature attenuation, I and J are the constant coefficients of data fitting.

[0116] S505: Determine the second mapping relationship between the cavity absolute humidity attenuation and the heating time according to the fifth mapping relationship and the sixth mapping relationship.

[0117] Taking the sixth mapping relationship obtained by linear fitting of water temperature attenuation data and cavity absolute humidity attenuation data as an example, according to the fifth mapping relationship and the sixth mapping relationship, formula (10) can be obtained. Formula (10) represents the second mapping relationship between cavity absolute humidity attenuation and heating time.

[0118] ΔG 湿度 =I*(G*Pt-H*D 容 )+J (10)

[0119] Among them, ΔG 湿度 is the absolute humidity attenuation of the cavity, P is the heating power, t is the heating time, D 容 is the cavity capacity, G, H, I and J are constant coefficients.

[0120] In one implementation, in step S307, the mapping relationship between the relative humidity of the cavity and the heating time is determined according to the first mapping relationship, the second mapping relationship and the preset working temperature. The specific process is as follows: According to the corresponding data between the preset dry air density and the saturated water vapor content, the mapping relationship between the saturated humidity of the saturated water vapor and the ambient temperature can be fitted. Still taking the linear relationship as an example, formula (11) can be obtained. Then, formula (4) representing the first mapping relationship and formula (10) representing the second mapping relationship are substituted into formula (12) representing the relative humidity calculation, and the heating time t is extracted to obtain formula (13). Formula (13) represents the mapping relationship between the steam generator heating time and the relative humidity of the cavity.

[0121] G 饱和含湿 =E*T 温度 -F (11)

[0122]

[0123] Where P is the heating power, t is the heating time, c is the specific heat capacity, D 容 is the cavity capacity, RH% is the cavity relative humidity, T 温度 is the ambient temperature, i.e. the preset working temperature, L 水 is the water inflow, E, F, G, H, I and J are constant coefficients.

[0124] The above embodiment establishes a mapping relationship between the heating time and relative humidity at a preset working temperature. That is to say, as long as the steam generator works for the heating time, the humidity in the cavity can reach the preset working humidity, thereby achieving low-cost humidity control.

[0125] In one embodiment, after the steam generator finishes heating, the method of the embodiment of the present application also includes: periodically obtaining a second temperature value, wherein the second temperature value represents the temperature value inside the cavity of the steamer; when the second temperature value is lower than the set working temperature, controlling the heating tube to perform auxiliary heating, wherein the heating tube is arranged above the cavity of the steamer.

[0126] The heating tube is used to maintain the working temperature of the cavity, and the steam generator provides the initial temperature and humidity. However, as the food is cooked or time passes, the heat in the cavity will slowly decay. The present application uses the heating tube for auxiliary heating to maintain the temperature in the cavity at the set working temperature without decaying, while making the humidity inside the cavity controllable. In one implementation, the working time of the heating tube is set according to the set working temperature and the second temperature value. The difference between the set working temperature and the second temperature value is obtained, and the proportional integral differential controller operation result (PID) is determined according to the difference, and then the working time of the heating tube is determined according to the PID value. Specifically, the larger the difference, the larger the calculated PID value, and the longer the working time of the heating tube is converted.

[0127] In one embodiment, the method of the embodiment of the present application further includes: periodically turning on the exhaust device according to a preset time interval. For example, every 10 minutes, the exhaust device is turned on for 5 seconds. It should be understood that the time interval can be manually set based on experience. Since the humidity in the closed cavity is not saturated and liquid water exists, the humidity in the cavity will slowly increase. In order to stabilize the humidity, the present application uses the exhaust device to dehumidify regularly when performing steam box control.

[0128] In one embodiment, the method of the embodiment of the present application also includes: during the auxiliary heating process of the heating tube, using an image acquisition device to capture images of food in the cavity, and judging the category of food based on the image of food; based on the category of food, periodically turning on the exhaust device at a preset time interval corresponding to the category of food, and the exhaust device is used to dehumidify the steamer.

[0129] Since different types of food produce different amounts of water vapor when they are steamed, for example, when meat and vegetables are steamed, meat produces more water vapor, so during the dehumidification process, the exhaust device can also be turned on according to the food category. By setting an image acquisition device in the steamer to collect food images in the steamer, the food category can be judged. In one implementation, the food category can be judged using features such as color, shape and texture. In another implementation, the food category can also be judged using a preset trained food category recognition model. Specifically, by labeling multiple food image samples as training data sets and training the initial neural network model, the food category recognition model can be obtained. Afterwards, different preset exhaust strategies can be enabled for different food categories, such as turning on for 3 seconds every 5 minutes, turning on for 5 seconds every 10 minutes, etc. In this way, the exhaust device of the steamer can enable different exhaust strategies in a targeted manner, making the humidity control in the cavity more accurate.

[0130] Figure 8 This is a steamer workflow flowchart provided in an embodiment of the present application.

[0131] S801: Acquire prior data.

[0132] Priori data is the data collected to determine the preset parameter control model, including the first temperature value and the absolute humidity value of the cavity corresponding to different heating times, the water temperature attenuation data and the absolute humidity attenuation data of the cavity corresponding to different heating times, etc. By setting different heating times of the steam generator, the following can be formed: Figure 6 , Figure 7 The curve of heating time and humidity related data shown. Prior data can be collected using temperature sensors, humidity sensors, etc. It should be understood that the humidity relationship is obtained based on the prior data, so the larger the amount of data collected, the more accurate the relationship is.

[0133] S803: Calibrate the humidity relationship using the temperature sensor and the humidity sensor.

[0134] By using the acquired priori data and according to the above formulas (1) to (13), the mapping relationship between the heating time of the steam generator and the relative humidity of the steam chamber at the preset working temperature can be determined.

[0135] S805: Write the calibration coefficient into the steamer system.

[0136] The mapping relationship between the heating time and the relative humidity of the cavity obtained in the above steps is written into the steamer control system for use when the steamer is actually used. It should be noted that different preset working temperatures of the steamer are set, and then when the steamer cavity reaches the preset working temperature, data is collected to obtain the prior data corresponding to the preset temperature, and the corresponding humidity relationship is created again and stored in the steamer control system.

[0137] S807: Start cooking.

[0138] S809: Set the steamer operating temperature and humidity, and calculate the heating time.

[0139] The steamer operating temperature can be regarded as a specific example of the operating temperature set in step S201, and the steamer operating humidity can be regarded as a specific example of the operating humidity set in step S201. By matching the humidity relationship corresponding to the operating temperature and substituting the set operating humidity into the humidity relationship, the heating time of the steam generator can be obtained.

[0140] S811: After the steam box reaches a stable temperature, the heating tube is turned on to assist heating and exhaust is performed intermittently in cycles.

[0141] The stable temperature is the set working temperature. When the steam generator stops working after the heating time, the heating tube is turned on for auxiliary heating to maintain the cavity temperature. At the same time, the exhaust device is turned on for intermittent exhaust to maintain the cavity humidity.

[0142] It can be seen from the technical solutions provided by the above embodiments of the present application that the present application obtains the set working temperature and set working humidity of the steamer; matches the target parameter control model corresponding to the set working temperature from the preset parameter control model library according to the set working temperature; uses the target parameter control model to determine the target heating time corresponding to the set working humidity; controls the steam generator to work according to the target heating time, so as to conveniently control the steamer to meet the set humidity requirements and temperature requirements. The present application pre-establishes the mapping relationship between the heating time of the steam generator at different preset working temperatures and the relative humidity of the cavity, and can realize the control of the cavity humidity on the basis of the traditional steamer structure without adding an additional humidity detection device, with low cost and high control accuracy. When the steamer reaches the working state of the set working temperature and the set working humidity, the working temperature and the working humidity are in a dynamic equilibrium state. The present application utilizes the equilibrium relationship between the working temperature and the working humidity to realize convenient and accurate control of the humidity of the steamer.

[0143] Fig. 9 It is a structural schematic diagram of the steamer control device provided in an embodiment of the present application.

[0144] like Fig. 9 As shown, the device 900 includes:

[0145] An acquisition module 901 is used to acquire a set working temperature and a set working humidity of the steam box;

[0146] A matching module 902 is used to match a target parameter control model corresponding to the set working temperature from a preset parameter control model library according to the set working temperature; the preset parameter control model library includes a plurality of preset parameter control models; each preset working temperature corresponds to a preset parameter control model; the preset parameter control model represents a mapping relationship between the relative humidity of the cavity of the steam box at the preset working temperature and the heating time of the steam generator; the steam generator is arranged at the bottom of the cavity of the steam box;

[0147] A target heating time determination module 903 is used to determine a target heating time corresponding to the set working humidity by using the target parameter control model;

[0148] The control module 904 is used to control the steam generator to operate according to the target heating time.

[0149] In some embodiments, the apparatus 900 may further include:

[0150] A preset working temperature determination module, used to determine a plurality of different preset working temperatures;

[0151] a value acquisition module, for acquiring, for each preset working temperature, a first temperature value and a cavity absolute humidity value corresponding to different heating times at the preset working temperature; the first temperature value represents a temperature value detected at the steam generator;

[0152] A preset parameter control model determination module, used to determine the mapping relationship between the relative humidity of the cavity and the heating time according to the first temperature value and the absolute humidity value of the cavity corresponding to different heating times, and obtain the preset parameter control model corresponding to the preset working temperature;

[0153] The storage module is used to store preset parameter control models corresponding to different preset working temperatures to obtain the preset parameter control model library.

[0154] In some embodiments, the preset parameter control model determination module may include:

[0155] A first mapping relationship determination submodule, used to determine a first mapping relationship between the absolute humidity value of the cavity and the heating time according to the first temperature value and the absolute humidity value of the cavity corresponding to different heating times;

[0156] The attenuation data acquisition submodule is used to obtain the water temperature attenuation data and the cavity absolute humidity attenuation data corresponding to different heating times; the water temperature attenuation data is the difference between the first temperature value at the end of heating and the first temperature value after cooling after heating; the cavity absolute humidity attenuation data is the difference between the cavity absolute humidity value at the end of heating and the cavity absolute humidity value after cooling after heating;

[0157] A second mapping relationship determination submodule, used to determine a second mapping relationship between the cavity absolute humidity attenuation and the heating time according to the water temperature attenuation data and the cavity absolute humidity attenuation data;

[0158] The mapping relationship determination submodule is used to determine the mapping relationship between the cavity relative humidity and the heating time according to the first mapping relationship, the second mapping relationship and the preset working temperature.

[0159] In some embodiments, the first mapping relationship determination module may include:

[0160] a third mapping relationship determining unit, configured to determine a third mapping relationship between the first temperature value and the heating time according to the power of the steam box and the water intake of the steam box;

[0161] a fourth mapping relationship determining unit, configured to obtain a fourth mapping relationship between the first temperature value and the absolute humidity value of the cavity through data fitting according to the first temperature values ​​and the absolute humidity values ​​of the cavity corresponding to different heating times;

[0162] The first mapping relationship determining unit is used to determine the first mapping relationship between the absolute humidity of the cavity and the heating time according to the third mapping relationship and the fourth mapping relationship.

[0163] In some embodiments, the second mapping relationship determination module may include:

[0164] a fifth mapping relationship determining unit, configured to determine a fifth mapping relationship between the water temperature attenuation and the heating time according to the power and cavity volume of the steam box;

[0165] a sixth mapping relationship determination unit, configured to obtain a sixth mapping relationship between water temperature attenuation and cavity absolute humidity attenuation through data fitting according to water temperature attenuation data and cavity absolute humidity attenuation data corresponding to different heating times;

[0166] The second mapping relationship determining unit is used to determine the second mapping relationship between the cavity absolute humidity attenuation and the heating time according to the fifth mapping relationship and the sixth mapping relationship.

[0167] In some embodiments, the apparatus 900 may further include:

[0168] A second temperature value acquisition module, used for periodically acquiring a second temperature value, where the second temperature value represents a temperature value inside the cavity of the steam box;

[0169] The auxiliary heating module is used to control the heating tube to perform auxiliary heating when the second temperature value is lower than the set working temperature, and the heating tube is arranged above the cavity of the steam box.

[0170] In some embodiments, the apparatus 900 may further include:

[0171] a food category determination module, used to collect food images in the cavity by using an image acquisition device during the auxiliary heating process of the heating tube, and determine the food category according to the food images;

[0172] The exhaust opening module is used to periodically open the exhaust device according to the food category and at a preset time interval corresponding to the food category, and the exhaust device is used to dehumidify the steamer.

[0173] The device and method embodiments in the described device embodiments are based on the same inventive concept.

[0174] An embodiment of the present application provides an electronic device, which includes a processor and a memory, wherein the memory stores at least one instruction or at least one program, and the at least one instruction or at least one program is loaded and executed by the processor to implement the method provided in the above method embodiment.

[0175] An embodiment of the present application also provides a computer storage medium, which can be set in a terminal to store at least one instruction or at least one program related to a method provided in the above method embodiment for implementing a method embodiment, and the at least one instruction or at least one program is loaded and executed by the processor to implement the method provided in the above method embodiment.

[0176] The embodiments of the present application also provide a computer program product or a computer program, which includes computer instructions stored in a computer-readable storage medium. The processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes to implement the method provided in the above method embodiment.

[0177] Optionally, in the embodiment of the present application, the storage medium may be located in at least one of the multiple network servers of the computer network. Optionally, in the present embodiment, the storage medium may include but is not limited to: a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk, and other media that can store program codes.

[0178] The memory described in the embodiment of the present application can be used to store software programs and modules, and the processor executes various functional applications and data processing by running the software programs and modules stored in the memory. The memory may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, application programs required for functions, etc.; the data storage area may store data created according to the use of the device, etc. In addition, the memory may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage device. Accordingly, the memory may also include a memory controller to provide the processor with access to the memory.

[0179] The method provided in the embodiment of the present application can be executed in a mobile terminal, a computer terminal, a server or a similar computing device. Taking running on a server as an example, Fig.10 1 is a hardware structure block diagram of a server of a steam box control method provided in an embodiment of the present application. Fig.10As shown, the server 1000 may have relatively large differences due to different configurations or performances, and may include one or more central processing units (CPU) 1010 (the central processing unit 1010 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA), a memory 1030 for storing data, and one or more storage media 1020 (such as one or more mass storage devices) for storing application programs 1023 or data 1022. Among them, the memory 1030 and the storage medium 1020 can be short-term storage or permanent storage. The program stored in the storage medium 1020 may include one or more modules, each of which may include a series of instruction operations on the server. Furthermore, the central processing unit 1010 can be configured to communicate with the storage medium 1020 and execute a series of instruction operations in the storage medium 1020 on the server 1000. The server 1000 may also include one or more power supplies 1060, one or more wired or wireless network interfaces 1050, one or more input and output interfaces 1040, and / or one or more operating systems 1021, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, etc.

[0180] The input / output interface 1040 may be used to receive or send data via a network. The specific example of the network may include a wireless network provided by a communication provider of the server 1000. In one example, the input / output interface 1040 includes a network adapter (Network Interface Controller, NIC), which may be connected to other network devices through a base station so as to communicate with the Internet. In one example, the input / output interface 1040 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0181] It can be understood by those skilled in the art that Fig.10 The structure shown is only for illustration and does not limit the structure of the above electronic device. Fig.10 More or fewer components as shown, or with Fig.10 Different configurations are shown.

[0182] It can be seen from the embodiments of the steamer control method, device and storage medium provided by the present application that the present application obtains the set working temperature and set working humidity of the steamer; matches the target parameter control model corresponding to the set working temperature from the preset parameter control model library according to the set working temperature; determines the target heating time corresponding to the set working humidity by using the target parameter control model; controls the steam generator to work according to the target heating time, so as to conveniently control the steamer to meet the set humidity requirements and temperature requirements. The present application pre-establishes the mapping relationship between the heating time of the steam generator at different preset working temperatures and the relative humidity of the cavity, and can realize the control of the cavity humidity on the basis of the traditional steamer structure without adding an additional humidity detection device, with low cost and high control accuracy. When the steamer reaches the working state of the set working temperature and the set working humidity, the working temperature and the working humidity are in a dynamic equilibrium state. The present application utilizes the equilibrium relationship between the working temperature and the working humidity to realize convenient and accurate control of the humidity of the steamer.

[0183] It should be noted that the above-mentioned sequence of the embodiments of the present application is for description only and does not represent the advantages and disadvantages of the embodiments. The above-mentioned specific embodiments of this specification are described. Other embodiments are within the scope of the attached claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0184] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device, equipment, and storage medium embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0185] A person skilled in the art will appreciate that all or part of the steps to implement the above embodiments may be accomplished by hardware or by instructing related hardware through a program, and the program may be stored in a computer storage medium, and the storage medium mentioned above may be a read-only memory, a disk or an optical disk, etc.

[0186] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A steamer control method, characterized in that: include: Get the set working temperature and set working humidity of the steam box; According to the set working temperature, a target parameter control model corresponding to the set working temperature is matched from a preset parameter control model library; the preset parameter control model library includes a plurality of preset parameter control models; each preset working temperature corresponds to a preset parameter control model; the preset parameter control model represents a mapping relationship between the relative humidity of the cavity of the steam box at the preset working temperature and the heating time of the steam generator; the steam generator is arranged at the bottom of the cavity of the steam box; Determining a target heating time corresponding to the set working humidity by using the target parameter control model; The steam generator is controlled to operate according to the target heating time.

2. The method according to claim 1, characterized in that The method further comprises: Determine a plurality of different preset operating temperatures; For each preset working temperature, obtaining a first temperature value and a cavity absolute humidity value corresponding to different heating times at the preset working temperature; the first temperature value represents a temperature value detected at the location of the steam generator; Determine the mapping relationship between the relative humidity of the cavity and the heating time according to the first temperature value and the absolute humidity value of the cavity corresponding to different heating times, and obtain the preset parameter control model corresponding to the preset working temperature; The preset parameter control models corresponding to different preset working temperatures are stored to obtain the preset parameter control model library.

3. The method according to claim 2, characterized in that The determining of the mapping relationship between the relative humidity of the cavity and the heating time according to the first temperature values ​​corresponding to different heating times and the absolute humidity values ​​of the cavity includes: Determining a first mapping relationship between the absolute humidity value of the cavity and the heating time according to the first temperature values ​​and the absolute humidity values ​​of the cavity corresponding to different heating times; Obtain water temperature attenuation data and cavity absolute humidity attenuation data corresponding to different heating times; the water temperature attenuation data is the difference between the first temperature value at the end of heating and the first temperature value after cooling after heating; the cavity absolute humidity attenuation data is the difference between the cavity absolute humidity value at the end of heating and the cavity absolute humidity value after cooling after heating; Determine a second mapping relationship between the cavity absolute humidity attenuation and the heating time according to the water temperature attenuation data and the cavity absolute humidity attenuation data; A mapping relationship between cavity relative humidity and heating time is determined according to the first mapping relationship, the second mapping relationship and the preset working temperature.

4. The method according to claim 3, characterized in that The determining a first mapping relationship between the absolute humidity value of the cavity and the heating time according to the first temperature value and the absolute humidity value of the cavity corresponding to different heating times includes: determining a third mapping relationship between the first temperature value and the heating time according to the power of the steam box and the water intake of the steam box; According to the first temperature values ​​and the absolute humidity values ​​of the cavity corresponding to different heating times, a fourth mapping relationship between the first temperature value and the absolute humidity value of the cavity is obtained through data fitting; The first mapping relationship between the absolute humidity of the cavity and the heating time is determined according to the third mapping relationship and the fourth mapping relationship.

5. The method according to claim 3, characterized in that: The determining, according to the water temperature attenuation data and the cavity absolute humidity attenuation data, a second mapping relationship between the cavity absolute humidity attenuation and the heating time comprises: Determining a fifth mapping relationship between the water temperature attenuation and the heating time according to the power and cavity volume of the steam box; According to the water temperature attenuation data and the cavity absolute humidity attenuation data corresponding to different heating times, a sixth mapping relationship between the water temperature attenuation and the cavity absolute humidity attenuation is obtained through data fitting; The second mapping relationship between the cavity absolute humidity attenuation and the heating time is determined according to the fifth mapping relationship and the sixth mapping relationship.

6. The method according to claim 1, characterized in that After the steam generator is heated, the method further comprises: periodically acquiring a second temperature value, where the second temperature value represents a temperature value inside the cavity of the steam box; When the second temperature value is lower than the set working temperature, the heating tube is controlled to perform auxiliary heating, and the heating tube is arranged above the cavity of the steam box.

7. The method according to claim 6, characterized in that The method further comprises: During the auxiliary heating process of the heating tube, an image acquisition device is used to acquire an image of food in the cavity, and the type of food is determined based on the image of food; According to the food category, the exhaust device is periodically turned on at a preset time interval corresponding to the food category, and the exhaust device is used to dehumidify the steam box.

8. A steam box control device, characterized in that: include: An acquisition module is used to acquire the set working temperature and set working humidity of the steam box; A matching module, used for matching a target parameter control model corresponding to the set working temperature from a preset parameter control model library according to the set working temperature; The preset parameter control model library includes a plurality of preset parameter control models; each preset working temperature corresponds to a preset parameter control model; the preset parameter control model represents the mapping relationship between the cavity relative humidity of the steam box at the preset working temperature and the heating time of the steam generator; the steam generator is arranged at the bottom of the cavity of the steam box; a target heating time determination module, configured to determine a target heating time corresponding to the set working humidity by using the target parameter control model; The control module is used to control the steam generator to operate according to the target heating time.

9. A steamer, characterized in that: The steamer comprises a processor and a memory, wherein the memory stores at least one instruction or at least one program, and the at least one instruction or at least one program is loaded by the processor and executes the steamer control method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The storage medium stores at least one instruction or at least one program, and the at least one instruction or at least one program is loaded and executed by the processor to implement the steamer control method according to any one of claims 1 to 7.

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