Method and device for determining oven temperature, oven and storage medium

Abstract

Embodiments of the present invention disclose a method, device, oven, and storage medium for determining oven temperature. The method includes: obtaining multiple detection point temperature values ​​corresponding to temperature detection points within the oven during multiple sampling periods, and determining the detection point temperature rise rate values ​​of the oven based on the detection point temperature values; determining the oven's insulation parameters based on the detection point temperature rise rate values, and determining the oven's center point temperature equation based on the insulation parameters; and determining the oven's temperature value based on the center point temperature equation. The technical solutions of the embodiments of the present invention improve the precision and accuracy of oven temperature detection.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of ovens, and in particular to a method and device for determining oven temperature, an oven, and a storage medium. Background Art

[0002] An oven is a sealed appliance used to bake food or dry products. It can be categorized as either a household appliance or an industrial oven. Electric ovens use radiant heat from heating elements to bake food. The temperature of an electric oven can generally be adjusted between 50°C and 250°C, depending on the specific baking requirements.

[0003] During operation, electric ovens must control the temperature of the geometric center of the oven cavity. However, due to structural limitations, temperature sensors are typically mounted on the top of the oven's inner back panel, making it impossible to directly measure the center temperature. Currently, during product development, most ovens estimate the center temperature by establishing a relationship between the sensor's detection point and the center temperature through theoretical analysis or experimental methods.

[0004] A drawback of existing oven center temperature measurement methods is that the equation between the detection point and the center temperature is determined before the oven is manufactured and cannot be changed based on specific oven parameters. However, the technical parameters of each oven component have specific tolerances, and using a single equation for center temperature measurement cannot be applied to every oven. This results in insufficient accuracy in center temperature detection during actual oven use. Furthermore, the performance of key oven components, such as the insulation and heating elements, degrades with age. Therefore, using a single equation to estimate the center temperature of the oven reduces accuracy. Summary of the Invention

[0005] Embodiments of the present invention provide a method and device for determining oven temperature, an oven, and a storage medium, so as to improve the precision and accuracy of oven temperature detection.

[0006] In a first aspect, an embodiment of the present invention provides a method for determining an oven temperature, the method comprising:

[0007] Acquire multiple detection point temperature values ​​corresponding to the temperature detection points inside the oven in multiple sampling periods, and determine the detection point temperature rise rate value of the oven according to the detection point temperature values;

[0008] Determining a heat preservation parameter of the oven according to the temperature rise rate value of the detection point, and determining a center point temperature equation of the oven based on the heat preservation parameter;

[0009] A temperature value of the oven is determined based on the center point temperature equation.

[0010] Furthermore, determining the temperature rise rate value of the detection point of the oven according to the temperature value of the detection point includes:

[0011] Determine the temperature rise rate value of the sample detection point according to the difference between the temperature values ​​of the detection points corresponding to two adjacent sampling periods;

[0012] The detection point temperature rise rate value of the oven is determined based on the sample detection point temperature rise rate value.

[0013] Furthermore, determining the heat preservation parameters of the oven according to the temperature rise rate value of the detection point includes:

[0014] The insulation parameter of the oven corresponding to the temperature rise rate value of the detection point is confirmed from a preset insulation parameter characteristic relationship list.

[0015] Furthermore, determining the center point temperature equation of the oven based on the insulation parameter includes:

[0016] The center point temperature equation of the oven is calculated based on the insulation parameters using formula (1);

[0017] T 中心点 =C·T 探测点 (1)

[0018] Among them, T 中心点 is the center temperature of the oven, T 探测点 is the temperature value of the detection point of the oven, and C is the insulation parameter.

[0019] Furthermore, before determining the center point temperature equation of the oven based on the heat preservation parameters, the method further includes:

[0020] Establishing a temperature field mathematical model of the oven using thermodynamic formulas, and determining a detection point temperature rise equation corresponding to a temperature detection point inside the oven and a center point temperature rise equation corresponding to a temperature center point according to the temperature field mathematical model;

[0021] Accordingly, the center point temperature equation of the oven is determined based on the insulation parameters, including:

[0022] The center point temperature equation of the oven is obtained based on the insulation parameters according to the detection point temperature rise equation and the center point temperature rise equation.

[0023] In a second aspect, an embodiment of the present invention further provides a device for determining an oven temperature, the device comprising:

[0024] a detection point temperature rise rate value determination module, configured to obtain a plurality of detection point temperature values ​​corresponding to temperature detection points inside the oven in a plurality of sampling periods, and determine the detection point temperature rise rate value of the oven according to the detection point temperature values;

[0025] a center point temperature equation determination module, configured to determine the heat preservation parameters of the oven according to the detection point temperature rise rate value, and determine the center point temperature equation of the oven based on the heat preservation parameters;

[0026] A temperature value determination module is used to determine the temperature value of the oven based on the center point temperature equation.

[0027] Furthermore, the detection point temperature rise rate value determination module includes:

[0028] The sample detection point temperature rise rate value determination submodule is used to determine the sample detection point temperature rise rate value according to the difference between the detection point temperature values ​​corresponding to two adjacent sampling periods;

[0029] The detection point temperature rise rate value determination submodule is used to determine the detection point temperature rise rate value of the oven based on the sample detection point temperature rise rate value.

[0030] Furthermore, the center point temperature equation determination module is specifically used to:

[0031] The insulation parameter of the oven corresponding to the temperature rise rate value of the detection point is confirmed from a preset insulation parameter characteristic relationship list.

[0032] In a third aspect, an embodiment of the present invention further provides an oven, comprising:

[0033] Oven body;

[0034] one or more processors;

[0035] a storage device for storing a plurality of programs,

[0036] The processor and the storage device are arranged inside the oven body. When at least one of the multiple programs is executed by the one or more processors, the one or more processors implement the method for determining the oven temperature provided in the embodiment of the first aspect of the present invention.

[0037] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method for determining the oven temperature provided in the embodiment of the first aspect of the present invention.

[0038] The technical solution of the embodiment of the present invention obtains multiple detection point temperature values ​​corresponding to temperature detection points within the oven during multiple sampling cycles, determines the detection point temperature rise rate value of the oven based on the detection point temperature values, determines the oven's insulation parameters based on the detection point temperature rise rate values, and determines the oven's center point temperature equation based on the insulation parameters; and determines the oven's temperature value based on the center point temperature equation. This solves the problem of low estimation precision and accuracy caused by the sole method of measuring the center point temperature of an oven in the prior art, thereby improving the precision and accuracy of oven temperature detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a diagram of the normal distribution curve of the number of oven products and the performance of oven insulation cotton;

[0040] Figure 2 This is a diagram of the normal distribution curve of the oven insulation cotton performance and the oven usage time;

[0041] Figure 3 This is a flow chart of a method for determining oven temperature provided in Example 1 of the present invention;

[0042] Figure 4 This is a flow chart of a method for determining oven temperature provided in a second embodiment of the present invention;

[0043] Figure 5 1 is a schematic diagram of a temperature rise curve of an oven provided by an embodiment of the present invention when in operation;

[0044] Figure 6 is a schematic diagram of an oven model provided by an embodiment of the present invention;

[0045] Figure 7 This is a structural diagram of a device for determining oven temperature provided in a third embodiment of the present invention;

[0046] Figure 8 This is a schematic diagram of the hardware structure of an oven provided in the fourth embodiment of the present invention. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of the present invention more clear, the following is a further detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention.

[0048] It should also be noted that, for ease of description, only the part relevant to the present invention, rather than all of the content, is shown in the accompanying drawings. Before discussing exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processing or methods depicted as flow charts. Although flow charts describe various operations (or steps) as sequential processing, many operations therein can be implemented in parallel, concurrently or simultaneously. In addition, the order of various operations can be rearranged. When its operation is completed, the processing can be terminated, but can also have additional steps not included in the accompanying drawings. The processing can correspond to methods, functions, procedures, subroutines, subprograms, etc.

[0049] As described in the background art, an oven uses a fixed equation to estimate the center temperature. During oven development, a equation is established between the oven sensor detection point and the center temperature through theoretical analysis or experimental methods.

[0050] Figure 1 This is a normal distribution curve diagram of the number of oven products and the performance of oven insulation cotton. Figure 1 Taking the performance of thermal insulation cotton as an example, in actual oven products, the thermal insulation performance of oven thermal insulation cotton has a certain tolerance range. The equation for estimating the temperature of the oven center point obtained through experiments or theoretical analysis only corresponds to Figure 1 There is only one point or a very narrow area on the curve. For points outside this area, the given estimation equation cannot be applied well, which leads to low estimation accuracy of the oven center temperature in actual application.

[0051] Figure 2 This is a normal distribution curve diagram of the performance of oven insulation cotton and oven usage time. Figure 2 The thermal insulation performance of the oven insulation cotton will decrease as the oven is used for a longer time. The estimation equation obtained through experiments and theoretical analysis corresponds to the thermal insulation performance of the oven insulation cotton in the initial stage. Once the thermal insulation performance drops to a certain level, the center point temperature measured by the estimation equation will no longer be accurate.

[0052] Example 1

[0053] Figure 3 This is a flow chart of a method for determining oven temperature provided in Example 1 of the present invention. This embodiment is applicable to accurately estimating the temperature of the geometric center point within an oven cavity. The method can be performed by an oven temperature determination device, which can be implemented in software and / or hardware. Specifically, the method includes the following steps:

[0054] S110 , obtaining multiple detection point temperature values ​​corresponding to the temperature detection points inside the oven in multiple sampling periods, and determining the detection point temperature rise rate values ​​of the oven according to the detection point temperature values.

[0055] The sampling period is the length of time during which the temperature value of the detection point is obtained during the preheating period of the oven, which is selected by a person skilled in the art based on actual needs. Since the preheating period of the oven is typically five minutes or ten minutes, for example, the sampling period may optionally be 20 seconds or 30 seconds.

[0056] In this embodiment, multiple temperature sensors are deployed at different locations within the oven cavity, and one or more temperature sensors can also be deployed at the upper left or upper right position on the back of the oven cavity to serve as temperature detection points within the oven. The temperature value detected by the temperature sensor at the temperature detection point within the oven is obtained as the detection point temperature value. It should be understood that this embodiment is merely an example of the location of the temperature sensor and does not impose any limitation thereto. The specific temperature detection points within the oven can be selected and set by those skilled in the art based on actual testing needs.

[0057] Specifically, the temperature of the oven during the preheating time is detected by a temperature sensor preset inside the oven cavity to obtain temperature values ​​corresponding to multiple temperature detection points inside the oven during a sampling period within the preheating time.

[0058] Furthermore, determining the detection point temperature rise rate value of the oven according to the detection point temperature value includes: determining the sample detection point temperature rise rate value according to the difference between the detection point temperature values ​​corresponding to two adjacent sampling periods; and determining the detection point temperature rise rate value of the oven based on the sample detection point temperature rise rate value.

[0059] S120: Determine insulation parameters of the oven according to the detection point temperature rise rate value, and determine a center point temperature equation of the oven based on the insulation parameters.

[0060] Among them, the insulation parameter is a parameter related to the heating and insulation performance of the current oven. The insulation parameter can be a constant. Depending on the heating and insulation performance of the oven itself, different ovens can have the same insulation parameter, and different ovens can also have different insulation parameters. The advantage of the technical solution provided in this embodiment is: the insulation parameter corresponding to the current oven is determined according to the heating and insulation performance of the current oven to adapt to the heating and insulation performance of the current oven, thereby improving the accuracy of obtaining the center point temperature of the oven.

[0061] Furthermore, determining the insulation parameter of the oven according to the detection point temperature rise rate value includes: confirming the insulation parameter of the oven corresponding to the detection point temperature rise rate value from a preset insulation parameter characteristic relationship list.

[0062] It can be understood that the temperature rise rate value at the detection point and the insulation parameter are related parameters with a corresponding relationship. At the same time, the temperature rise rate value at the detection point and the insulation parameter are related to the temperature rise performance of the oven. Therefore, the temperature rise rate value at the detection point and the insulation parameter can determine the accuracy of the temperature estimation of the center point of the oven.

[0063] On the basis of the above embodiment, the center point temperature equation of the oven is determined based on the heat preservation parameters, including:

[0064] The center point temperature equation of the oven is calculated based on the insulation parameters using formula (1);

[0065] T 中心点 =C·T 探测点 (1)

[0066] Among them, T 中心点 is the center temperature of the oven, T 探测点 is the temperature value of the detection point of the oven, and C is the insulation parameter.

[0067] S130: Determine the temperature value of the oven based on the center point temperature equation.

[0068] Specifically, based on formula (1), the acquired detection point temperature value and insulation parameter of the oven are substituted into the formula to obtain the center point temperature value of the oven, that is, the desired temperature value of the oven.

[0069] Furthermore, before determining the center point temperature equation of the oven based on the insulation parameters, it also includes: establishing a temperature field mathematical model of the oven through thermodynamic formulas, and determining the detection point temperature rise equation corresponding to the temperature detection point inside the oven and the center point temperature rise equation corresponding to the temperature center point according to the temperature field mathematical model; accordingly, determining the center point temperature equation of the oven based on the insulation parameters includes: obtaining the center point temperature equation of the oven according to the detection point temperature rise equation and the center point temperature rise equation based on the insulation parameters.

[0070] It should be noted that the oven involved in this embodiment can be a household appliance oven used for baking food, etc., or it can be an industrial oven, and this embodiment does not impose any restrictions on this.

[0071] The technical solution of the embodiment of the present invention obtains multiple detection point temperature values ​​corresponding to temperature detection points within the oven during multiple sampling cycles, determines the detection point temperature rise rate value of the oven based on the detection point temperature values, determines the oven's insulation parameters based on the detection point temperature rise rate values, and determines the oven's center point temperature equation based on the insulation parameters; and determines the oven's temperature value based on the center point temperature equation. This solves the problem of low estimation precision and accuracy caused by the sole method of measuring the center point temperature of an oven in the prior art, thereby improving the precision and accuracy of oven temperature detection.

[0072] Example 2

[0073] Figure 4 This is a flow chart of a method for determining oven temperature provided by Embodiment 2 of the present invention. This embodiment is optimized based on the above embodiment.

[0074] Accordingly, the method of this embodiment specifically includes:

[0075] S210: Acquire temperature values ​​of multiple detection points corresponding to temperature detection points inside the oven in multiple sampling periods.

[0076] S220 , determining a temperature rise rate value of a sample detection point according to a difference between temperature values ​​of the detection points corresponding to two adjacent sampling periods.

[0077] Specifically, the temperature rise rate value of the sample detection point of the oven can be obtained by subtracting the detection point temperature value obtained in the previous sampling period from the detection point temperature value obtained in the current sampling period.

[0078] S230: Determine a detection point temperature rise rate value of the oven based on the sample detection point temperature rise rate value.

[0079] Specifically, the temperature rise rate value of the detection point of the oven is obtained by taking an average of the temperature rise rate values ​​of the detection points of the multiple sample detection points obtained in multiple sampling periods.

[0080] Figure 5 Schematic diagram of the temperature rise curve of the oven provided by the embodiment of the present invention when it is working. Figure 5 Based on the above embodiment, due to the system inertia of the oven itself, the temperature value of the center point of the oven is almost unchanged during the first t min (about 0.5 minutes, depending on the structure of different ovens) of the oven preheating. At this time, the temperature rise curve of the center point does not satisfy the formula (1). After t min, the temperature rise curve begins to conform to the law of formula (1) (see Figure 5In order to avoid the influence of the oven system inertia as much as possible, the sampling time is [t+1.5, t+2.5] minutes. The detection point temperature rise rate value of the oven is determined based on the temperature rise rate value of the sample detection point, that is, the detection point temperature rise rate value is

[0081] It can be understood that the temperature rise rate value at the detection point is used to characterize the heating and insulation characteristics of the oven, and the parameter is stable and easy to measure, which makes it easy to eliminate the influence of time and other parameters on the temperature estimation of the center point of the oven.

[0082] S240: Confirm the insulation parameter of the oven corresponding to the temperature rise rate value of the detection point from a preset insulation parameter characteristic relationship list.

[0083] The temperature rise performance of the oven is mainly related to the power of the heating rod and the thermal insulation coefficient of the thermal insulation cotton. Since the two can be equivalent, it is only necessary to determine one of the coefficients. The relationship is sufficient, so this embodiment takes the thermal insulation coefficient of oven insulation cotton as an example for explanation.

[0084] In this embodiment, the thermal insulation coefficient of the oven insulation cotton is divided into n intervals (n ≥ 1 and is a positive integer). The interval length is determined according to the temperature control accuracy requirements of the oven and the robustness of the algorithm, and a preset thermal insulation parameter characteristic relationship list can be obtained. During the development and testing of the oven, the thermal insulation coefficient of the oven insulation cotton and the thermal insulation coefficient of the oven insulation cotton are determined by theoretical analysis, simulation analysis or experiment. The numerical correspondence and The value of C corresponding to the interval is written into the control program of the oven.

[0085] Specifically, during the actual use of the oven, the oven will detect the temperature within the set sampling period during the preheating stage. The value is compared with the value written into the program in advance to find the interval, and the corresponding C is brought into formula (1). This formula is used as the temperature estimation equation for the current oven operation, so as to achieve dynamic optimization of the estimation equation through this method.

[0086] S250, establishing a temperature field mathematical model of the oven using thermodynamic formulas, and determining a detection point temperature rise equation corresponding to a temperature detection point inside the oven and a center point temperature rise equation corresponding to a temperature center point according to the temperature field mathematical model.

[0087] Figure 6 Schematic diagram of an oven model provided by an embodiment of the present invention. Figure 6 , the temperature field mathematical model of the oven is established by thermodynamic formula as shown in formula (2):

[0088]

[0089] in:

[0090] M is the mass of the heating rod, c is the specific heat, H is the heat transfer coefficient, A is the heat transfer area, T i is the oven temperature, T0 is the ambient temperature, Q i is the input heat, Q0 is the heat dissipation, and t is the heating time.

[0091] The temperature rise equation of the detection point corresponding to the temperature detection point inside the oven and the temperature rise equation of the center point corresponding to the temperature center point are determined according to the temperature field mathematical model, that is, formula (3):

[0092]

[0093] in:

[0094] T 中心点 is the temperature of the geometric center of the oven cavity, T 探测点 is the temperature of the temperature sensor detection point, t is the heating time, A1, A2, B1, B2, C1 and C2 are the correlation coefficients with the heating and heat preservation performance of the oven, and D1 and D2 are the correlation coefficients with the initial temperature of the oven.

[0095] S260: Obtain a center point temperature equation of the oven based on the insulation parameters, the detection point temperature rise equation, and the center point temperature rise equation.

[0096] Furthermore, by reorganizing formula (3), we can obtain formula (1), which is the center point temperature equation of the oven.

[0097] Specifically, determining the center point temperature equation of the oven based on the heat preservation parameters includes: calculating the center point temperature equation of the oven based on the heat preservation parameters using formula (1);

[0098] T 中心点 =C·T 探测点 (1)

[0099] Among them, T 中心点 is the center temperature of the oven, T 探测点 is the temperature value of the detection point of the oven, and C is the insulation parameter.

[0100] S270: Determine the temperature value of the oven based on the center point temperature equation.

[0101] Compared with the method of using a fixed oven center point temperature estimation equation, the technical solution of the embodiment of the present invention is that the method proposed in the embodiment of the present invention can dynamically optimize the estimation equation (i.e., formula (1)) according to the changes in the performance of the oven heating tube and the insulation cotton, and has the following advantages: in the actual production process of the oven, the performance of the heating tube and the insulation cotton has a certain fluctuation range, and the dynamically optimized estimation equation can better adapt to the fluctuating oven performance, thereby improving the accuracy of the oven center point temperature prediction; on the other hand, the oven performance will continue to decline during use, and the prediction accuracy of the fixed estimation equation will become lower and lower, thereby affecting the oven temperature control performance. The dynamically optimized parameter equation (i.e., formula (1)) provided by the embodiment of the present invention can adjust the equation parameters according to the changes in the oven performance, thereby ensuring the accuracy of the temperature prediction.

[0102] Example 3

[0103] Figure 7 This is a structural diagram of a device for determining oven temperature provided in the third embodiment of the present invention. This embodiment is applicable to the situation where the temperature of the geometric center point in the oven cavity is accurately estimated.

[0104] like Figure 7 As shown, the determination device includes: a detection point temperature rise rate value determination module 310, a center point temperature equation determination module 320 and a temperature value determination module 330, wherein:

[0105] The detection point temperature rise rate value determination module 310 is used to obtain multiple detection point temperature values ​​corresponding to the temperature detection points inside the oven in multiple sampling periods, and determine the detection point temperature rise rate value of the oven based on the detection point temperature values;

[0106] a center point temperature equation determination module 320, configured to determine the heat preservation parameters of the oven according to the detection point temperature rise rate value, and determine the center point temperature equation of the oven based on the heat preservation parameters;

[0107] The temperature value determination module 330 is configured to determine the temperature value of the oven based on the center point temperature equation.

[0108] The oven temperature determination device of this embodiment obtains multiple detection point temperature values ​​corresponding to temperature detection points within the oven during multiple sampling cycles, determines the detection point temperature rise rate values ​​of the oven based on the detection point temperature values, determines the oven's insulation parameters based on the detection point temperature rise rate values, and determines the oven's center point temperature equation based on the insulation parameters; and finally determines the oven's temperature value based on the center point temperature equation. This device solves the problem of low estimation precision and accuracy caused by the sole method of measuring the center point temperature of an oven in the prior art, thereby improving the precision and accuracy of oven temperature detection.

[0109] Based on the above embodiments, the detection point temperature rise rate value determination module includes:

[0110] The sample detection point temperature rise rate value determination submodule is used to determine the sample detection point temperature rise rate value according to the difference between the detection point temperature values ​​corresponding to two adjacent sampling periods;

[0111] The detection point temperature rise rate value determination submodule is used to determine the detection point temperature rise rate value of the oven based on the sample detection point temperature rise rate value.

[0112] Based on the above embodiments, the center point temperature equation determination module is specifically used to:

[0113] The insulation parameter of the oven corresponding to the temperature rise rate value of the detection point is confirmed from a preset insulation parameter characteristic relationship list.

[0114] Based on the above embodiments, the center point temperature equation of the oven is determined based on the heat preservation parameters, including:

[0115] The center point temperature equation of the oven is calculated based on the insulation parameters using formula (1);

[0116] T 中心点 =C·T 探测点 (1)

[0117] Among them, T 中心点 is the center temperature of the oven, T 探测点 is the temperature value of the detection point of the oven, and C is the insulation parameter.

[0118] Based on the above embodiments, before determining the center point temperature equation of the oven based on the heat preservation parameters, the method further includes:

[0119] Establishing a temperature field mathematical model of the oven using thermodynamic formulas, and determining a detection point temperature rise equation corresponding to a temperature detection point inside the oven and a center point temperature rise equation corresponding to a temperature center point according to the temperature field mathematical model;

[0120] Accordingly, the center point temperature equation of the oven is determined based on the insulation parameters, including:

[0121] The center point temperature equation of the oven is obtained based on the insulation parameters according to the detection point temperature rise equation and the center point temperature rise equation.

[0122] The oven temperature determination device provided in the above embodiments can execute the oven temperature determination method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of executing the oven temperature determination method.

[0123] Example 4

[0124] Figure 8 This is a structural diagram of an oven provided by the fourth embodiment of the present invention, as shown in FIG. Figure 8 As shown, the oven includes an oven body (not shown in the figure), a processor 410, a memory 420, an input device 430 and an output device 440; the number of processors 410 in the oven can be one or more, Figure 8 In the figure, a processor 410 is taken as an example; the processor 410 and the storage device are arranged inside the oven body, and the processor 410, the memory 420, the input device 430 and the output device 440 in the oven can be connected via a bus or other means. Figure 8 The bus connection is taken as an example.

[0125] Memory 420, as a computer-readable storage medium, can be used to store software programs, computer-executable programs, and modules, such as the program instructions / modules corresponding to the method for determining oven temperature in embodiments of the present invention (e.g., detection point temperature rise rate determination module 310, center point temperature equation determination module 320, and temperature value determination module 330 in the oven temperature determination device). Processor 410 executes the software programs, instructions, and modules stored in memory 420 to execute various oven functions and data processing, thereby implementing the aforementioned method for determining oven temperature.

[0126] Memory 420 may primarily include a program storage area and a data storage area. The program storage area may store an operating system and at least one application required for a function; the data storage area may store data generated based on the terminal's usage. Furthermore, memory 420 may include high-speed random access memory and non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state memory device. In some instances, memory 420 may further include memory located remotely from processor 410, and such remote memory may be connected to the oven via a network. Examples of such networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0127] The input device 430 may be used to receive input digital or character information and generate key signal input related to user settings and function control of the oven. The output device 440 may include a display device such as a display screen.

[0128] Example 5

[0129] A fifth embodiment of the present invention further provides a storage medium containing computer-executable instructions. When the computer-executable instructions are executed by a computer processor, the computer-executable instructions are used to perform a method for determining an oven temperature. The method includes:

[0130] Acquire multiple detection point temperature values ​​corresponding to the temperature detection points inside the oven in multiple sampling periods, and determine the detection point temperature rise rate value of the oven according to the detection point temperature values;

[0131] Determining a heat preservation parameter of the oven according to the temperature rise rate value of the detection point, and determining a center point temperature equation of the oven based on the heat preservation parameter;

[0132] A temperature value of the oven is determined based on the center point temperature equation.

[0133] Of course, the computer executable instructions of the storage medium provided by the embodiment of the present invention are not limited to the operations of the method described above, and can also execute related operations in the method for determining the oven temperature provided by any embodiment of the present invention.

[0134] Through the above description of the implementation methods, those skilled in the art can clearly understand that the present invention can be implemented with the help of software and necessary general-purpose hardware, and of course it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), random access memory (RAM), flash memory (FLASH), hard disk or optical disk, etc., including a number of instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute the methods described in each embodiment of the present invention.

[0135] It is worth noting that in the embodiment of the above-mentioned device for determining the oven temperature, the various units and modules included are only divided according to functional logic, but are not limited to the above-mentioned division, as long as the corresponding functions can be achieved; in addition, the specific names of the functional units are only for the convenience of distinguishing each other and are not used to limit the scope of protection of the present invention.

[0136] Note that the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A method for determining oven temperature, characterized in that: include: Acquire multiple detection point temperature values ​​corresponding to the temperature detection points inside the oven in multiple sampling periods, and determine the detection point temperature rise rate value of the oven according to the detection point temperature values; Determining a heat preservation parameter of the oven according to the temperature rise rate value of the detection point, and determining a center point temperature equation of the oven based on the heat preservation parameter; determining a temperature value of the oven based on the center point temperature equation; Determining the center point temperature equation of the oven based on the insulation parameter includes: The center point temperature equation of the oven is calculated based on the insulation parameters using formula (1); T 中心点 =C·T 探测点 (1) Among them, T 中心点 is the center temperature of the oven, T 探测点 is the temperature value of the detection point of the oven, and C is the insulation parameter; Before determining the center point temperature equation of the oven based on the heat preservation parameters, the method further includes: The temperature field mathematical model of the oven is established by thermodynamic formulas. The temperature field mathematical model of the oven is as shown in formula (2): Where: M is the mass of the heating rod, c is the specific heat, H is the heat transfer coefficient, A is the heat transfer area, T i is the oven temperature, T0 is the ambient temperature, Q i is the input heat, Q0 is the heat dissipation, and t is the heating time; And according to the temperature field mathematical model, the temperature rise equation of the detection point corresponding to the temperature detection point inside the oven and the temperature rise equation of the center point corresponding to the temperature center point are determined, that is, formula (3): Among them, T 中心点 is the temperature of the geometric center of the oven cavity, T 探测点 is the temperature of the temperature sensor detection point, t is the heating time, A1, A2, B1, B2, C1 and C2 are the correlation coefficients with the heating and heat preservation performance of the oven, and D1 and D are the correlation coefficients with the initial temperature of the oven; Accordingly, the center point temperature equation of the oven is determined based on the insulation parameters, including: The center point temperature equation of the oven is obtained based on the insulation parameters according to the detection point temperature rise equation and the center point temperature rise equation.

2. The determination method according to claim 1, characterized in that Determining a temperature rise rate value of a detection point of the oven according to the temperature value of the detection point includes: Determine the temperature rise rate value of the sample detection point according to the difference between the temperature values ​​of the detection points corresponding to two adjacent sampling periods; The detection point temperature rise rate value of the oven is determined based on the sample detection point temperature rise rate value.

3. The determination method according to claim 1, characterized in that Determining the heat preservation parameters of the oven according to the temperature rise rate value of the detection point includes: The insulation parameter of the oven corresponding to the temperature rise rate value of the detection point is confirmed from a preset insulation parameter characteristic relationship list.

4. A device for determining oven temperature, characterized in that: include: a detection point temperature rise rate value determination module, configured to obtain a plurality of detection point temperature values ​​corresponding to temperature detection points inside the oven in a plurality of sampling periods, and determine the detection point temperature rise rate value of the oven according to the detection point temperature values; a center point temperature equation determination module, configured to determine the heat preservation parameters of the oven according to the detection point temperature rise rate value, and determine the center point temperature equation of the oven based on the heat preservation parameters; a temperature value determination module, configured to determine a temperature value of the oven based on the center point temperature equation; Determining the center point temperature equation of the oven based on the insulation parameter includes: The center point temperature equation of the oven is calculated based on the insulation parameters using formula (1); T 中心点 =C·T 探测点 (1) Among them, T 中心点 is the center temperature of the oven, T 探测点 is the temperature value of the detection point of the oven, and C is the insulation parameter; Before determining the center point temperature equation of the oven based on the heat preservation parameters, the method further includes: The temperature field mathematical model of the oven is established by thermodynamic formulas. The temperature field mathematical model of the oven is as shown in formula (2): Where: M is the mass of the heating rod, c is the specific heat, H is the heat transfer coefficient, A is the heat transfer area, T i is the oven temperature, T0 is the ambient temperature, Q i is the input heat, Q0 is the heat dissipation, and t is the heating time; And according to the temperature field mathematical model, the temperature rise equation of the detection point corresponding to the temperature detection point inside the oven and the temperature rise equation of the center point corresponding to the temperature center point are determined, that is, formula (3): Among them, T 中心点 is the temperature of the geometric center of the oven cavity, T 探测点 is the temperature of the temperature sensor detection point, t is the heating time, A1, A2, B1, B2, C1 and C2 are the correlation coefficients with the heating and heat preservation performance of the oven, and D1 and D are the correlation coefficients with the initial temperature of the oven; Accordingly, the center point temperature equation of the oven is determined based on the insulation parameters, including: The center point temperature equation of the oven is obtained based on the insulation parameters according to the detection point temperature rise equation and the center point temperature rise equation.

5. The determination device according to claim 4, characterized in that The detection point temperature rise rate value determination module includes: The sample detection point temperature rise rate value determination submodule is used to determine the sample detection point temperature rise rate value according to the difference between the detection point temperature values ​​corresponding to two adjacent sampling periods; The detection point temperature rise rate value determination submodule is used to determine the detection point temperature rise rate value of the oven based on the sample detection point temperature rise rate value.

6. The determination device according to claim 4, characterized in that The center point temperature equation determination module is specifically used for: The insulation parameter of the oven corresponding to the temperature rise rate value of the detection point is confirmed from a preset insulation parameter characteristic relationship list.

7. An oven, characterized in that: The oven comprises: Oven body; one or more processors; a storage device for storing one or more programs; The processor and the storage device are arranged inside the oven body. When the one or more programs are executed by the one or more processors, the one or more processors implement the method for determining the oven temperature according to any one of claims 1 to 3.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method for determining the oven temperature according to any one of claims 1 to 3 is implemented.

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