A method, apparatus, oven, and storage medium for determining oven temperature.

Abstract

This invention discloses a method, apparatus, oven, and storage medium for determining oven temperature. The method includes: acquiring temperature values ​​at detection points inside the oven during multiple sampling periods, and determining detection point insulation parameters based on the detection point temperature values; determining center point insulation parameters corresponding to the temperature center point inside the oven based on the detection point insulation parameters; determining a center point temperature equation for the oven based on the center point insulation parameters, and determining the oven temperature value using the center point temperature equation. This invention aims to improve the accuracy and precision of oven temperature detection.

Description

Technical Field

[0001] This invention relates to the field of oven technology, and more particularly to a method, apparatus, oven, and storage medium for determining oven temperature. Background Technology

[0002] An oven is a sealed appliance used for baking food or drying products. Ovens are categorized into household and industrial ovens. Electric ovens utilize radiant heat from heating elements to bake food. Depending on the type of food being baked, the temperature of an electric oven can generally be adjusted within the range of 50-250℃.

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

[0004] The drawback of existing technologies for measuring the center point temperature of ovens is that the relationship between the probe point and the center point temperature is determined before the oven is manufactured and cannot be changed according to variations in the oven's specific parameters. However, the technical parameters of each component in an oven have certain tolerance ranges. Using the same relationship to measure the center point temperature of an oven cannot be applied to every oven, leading to insufficient accuracy in center point temperature detection during actual use. Furthermore, the performance of key components such as the oven's insulation and heating elements deteriorates with age, further reducing the accuracy of center point temperature estimation using the same relationship. Summary of the Invention

[0005] This invention provides a method, apparatus, oven, and storage medium for determining oven temperature, thereby improving the accuracy and precision of oven temperature detection.

[0006] In a first aspect, embodiments of the present invention provide a method for determining oven temperature, the method comprising:

[0007] The temperature values ​​of the detection points inside the oven are obtained in multiple sampling periods, and the temperature values ​​of the detection points are used to determine the heat preservation parameters of the oven's detection points.

[0008] Determine the center point insulation parameters corresponding to the temperature center point inside the oven based on the insulation parameters of the detection points.

[0009] The center point temperature equation of the oven is determined based on the center point insulation parameters, and the temperature value of the oven is determined through the center point temperature equation.

[0010] Furthermore, the insulation parameters of the oven's detection point are determined based on the temperature value at the detection point, including:

[0011] The temperature rise rate of the oven's detection point is determined based on the temperature value at the detection point.

[0012] The heat preservation parameters of the oven's detection points are determined based on the temperature rise rate value of the detection points.

[0013] Furthermore, determining the temperature rise rate of the oven's detection point based on the temperature value at the detection point includes:

[0014] The temperature rise rate of the oven's detection point is determined based on the difference in temperature values ​​at the detection points corresponding to two adjacent sampling periods.

[0015] Furthermore, the insulation parameters of the detection point include the insulation parameters of the first detection point, the insulation parameters of the second detection point, and the insulation parameters of the third detection point;

[0016] Accordingly, the oven's heat preservation parameters for the detection point are determined based on the temperature rise rate value at the detection point, including:

[0017] The insulation parameters of the first detection point, the second detection point, and the third detection point are calculated using formula (1) based on the temperature rise rate value of the detection point.

[0018]

[0019] in, A1 is the temperature rise rate of the detection point, B2 is the heat preservation parameter of the first detection point, C2 is the heat preservation parameter of the second detection point, C2 is the heat preservation parameter of the third detection point, and t is the heating time of the oven.

[0020] Furthermore, the center point insulation parameters include a first center point insulation parameter, a second center point insulation parameter, and a third center point insulation parameter;

[0021] Accordingly, determining the center point temperature equation of the oven based on the center point insulation parameters includes:

[0022] Formula (2) is established based on the center point insulation parameters as the center point temperature equation of the oven:

[0023]

[0024] Wherein, T_center_point is the temperature value at the center point of the oven, T_probe_point is the temperature value at the probe point of the oven, A1 is the insulation parameter at the first center point, B1 is the insulation parameter at the second center point, C1 is the insulation parameter at the third center point, t is the heating time of the oven, and D1 and D2 are the initial temperature constants of the oven.

[0025] Furthermore, before determining the center point temperature equation of the oven based on the center point insulation parameters, the process also includes:

[0026] A temperature field mathematical model of the oven is established using thermodynamic formulas, and the temperature rise equations for the detection points and the center point are determined based on the temperature field mathematical model.

[0027] Accordingly, determining the center point temperature equation of the oven based on the center point insulation parameters includes:

[0028] Based on the center point insulation parameters, the center point temperature equation of the oven is obtained according to the detection point temperature rise equation and the center point temperature rise equation.

[0029] Furthermore, determining the center point insulation parameters corresponding to the temperature center point inside the oven based on the insulation parameters of the detection points includes:

[0030] Confirm the center point insulation parameter corresponding to the temperature center point inside the oven that corresponds to the insulation parameter of the detection point from the preset insulation parameter characteristic relationship list.

[0031] Secondly, embodiments of the present invention also provide an oven temperature determining device, the determining device comprising:

[0032] The detector point insulation parameter determination module is used to obtain the detector point temperature value corresponding to the temperature detector point inside the oven in multiple sampling cycles, and determine the detector point insulation parameter of the oven based on the detector point temperature value.

[0033] The center point insulation parameter determination module is used to determine the center point insulation parameter corresponding to the temperature center point inside the oven based on the detection point insulation parameter.

[0034] The temperature value determination module is used to determine the center point temperature equation of the oven based on the center point insulation parameters, and to determine the temperature value of the oven through the center point temperature equation.

[0035] Thirdly, embodiments of the present invention also provide an oven, the oven comprising:

[0036] Oven body;

[0037] One or more processors;

[0038] Storage device for storing multiple programs.

[0039] The processor and the storage device are disposed inside the oven body. When at least one of the plurality of programs is executed by the one or more processors, the one or more processors implement the oven temperature determination method provided in the first aspect embodiment of the present invention.

[0040] Fourthly, embodiments of the present invention also provide a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method for determining oven temperature provided in the first aspect of the present invention.

[0041] The technical solution of this invention obtains the temperature values ​​of detection points corresponding to temperature detection points inside the oven in multiple sampling periods, and determines the oven's detection point insulation parameters based on these temperature values; determines the center point insulation parameters corresponding to the temperature center point inside the oven based on these detection point insulation parameters; determines the oven's center point temperature equation based on these center point insulation parameters, and determines the oven's temperature value using these center point temperature equations. This solves the problem of low estimation accuracy and low precision caused by the unique center point temperature measurement method in existing technologies, thereby improving the accuracy and precision of oven temperature detection. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the normal distribution curve of oven product quantity and oven insulation performance;

[0043] Figure 2 This is a schematic diagram of the normal distribution curve of oven insulation performance versus oven usage time;

[0044] Figure 3 This is a flowchart of a method for determining oven temperature provided in Embodiment 1 of the present invention;

[0045] Figure 4 This is a flowchart of a method for determining oven temperature provided in Embodiment 2 of the present invention;

[0046] Figure 5 This is a schematic diagram of the temperature rise curve of the oven during operation provided in an embodiment of the present invention;

[0047] Figure 6 This is a schematic diagram of the oven model provided in an embodiment of the present invention;

[0048] Figure 7 This is a structural diagram of an oven temperature determination device provided in Embodiment 3 of the present invention;

[0049] Figure 8 This is a schematic diagram of the hardware structure of an oven provided in Embodiment 4 of the present invention. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the present invention clearer, specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it.

[0051] It should also be noted that, for ease of description, the accompanying drawings show only the parts relevant to the invention and not all of them. Before discussing exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe the operations (or steps) as sequential processes, many of the operations can be performed in parallel, concurrently, or simultaneously. Furthermore, the order of the operations can be rearranged. The process can be terminated when its operation is completed, but it may also have additional steps not included in the drawings. The process may correspond to a method, function, procedure, subroutine, subprogram, etc.

[0052] As described in the background section, ovens use a fixed formula to estimate the center point temperature. Therefore, during the oven development process, a formula for the relationship between the oven sensor detection point and the center point temperature is established through theoretical analysis or experimental methods.

[0053] Figure 1 This is a schematic diagram of the normal distribution curve of the quantity of oven products and the performance of oven insulation cotton. (See also...) Figure 1 Taking the performance of insulation cotton as an example, in actual oven products, the insulation performance of oven insulation cotton has a certain tolerance range. The oven center point temperature estimation equation obtained through experiments or theoretical analysis only corresponds to... Figure 1 The given estimation equation is not well applied to points on the curve, such as a single point or a very narrow region, but it is not well applied to points outside that region. This results in low accuracy in estimating the temperature of the oven's center point in practical applications.

[0054] Figure 2 This is a schematic diagram illustrating the normal distribution curve of oven insulation performance versus oven usage time. (See also...) Figure 2 The insulation performance of oven insulation cotton will decrease as the oven is used for longer periods of time. The estimation equation obtained through experiments and theoretical analysis corresponds to the insulation performance of the insulation cotton in the initial stage of the oven. Once the insulation performance decreases to a certain extent, the center point temperature measured by the estimation equation will no longer be accurate.

[0055] Example 1

[0056] Figure 3This is a flowchart of a method for determining oven temperature according to Embodiment 1 of the present invention. This embodiment is applicable to situations requiring accurate estimation of the temperature at the geometric center point within the oven cavity. The method can be executed by an oven temperature determining device, which can be implemented through software and / or hardware. Specifically, it includes the following steps:

[0057] S110. Obtain the temperature values ​​of the detection points corresponding to the temperature detection points inside the oven in multiple sampling periods, and determine the heat preservation parameters of the detection points of the oven based on the temperature values ​​of the detection points.

[0058] The sampling period is the time length during which the oven preheats, selected by those skilled in the art based on actual needs, to acquire the temperature value of the detection point. Since the oven preheating time is typically five or ten minutes, the sampling period can optionally be 20 seconds or 30 seconds.

[0059] In this embodiment, multiple temperature sensors are deployed at different locations within the oven cavity. Alternatively, one or more temperature sensors can be deployed at the upper left or upper right rear of the oven cavity to serve as temperature detection points inside the oven. The temperature value detected by the temperature sensors at these detection points is used as the temperature value of the detection point. It is understood that this embodiment only provides an illustrative example of the temperature sensor locations and does not impose any limitations on them. The specific temperature detection points inside the oven can be selected and set by those skilled in the art according to actual testing needs.

[0060] Specifically, the temperature of the oven is detected by a pre-set temperature sensor inside the oven cavity during the preheating time, so as to obtain the temperature values ​​of multiple temperature detection points inside the oven during the sampling period within the preheating time.

[0061] The probe point insulation parameter is a parameter related to the heating and insulation performance of the current oven. The probe point insulation parameter can be a constant. Depending on the heating and insulation performance of the oven itself, different ovens can have the same probe point insulation parameter, or different ovens can have different probe point insulation parameters. The advantage of the technical solution provided in this embodiment is that: the probe point insulation parameter corresponding to the current oven is determined according to the heating and insulation performance of the current oven, so as to adapt to the heating and insulation performance of the current oven, thereby improving the accuracy of the oven center point temperature measurement.

[0062] Furthermore, determining the oven's probe point insulation parameters based on the probe point temperature value includes: determining the oven's probe point temperature rise rate value based on the probe point temperature value; and determining the oven's probe point insulation parameters based on the probe point temperature rise rate value.

[0063] Determining the temperature rise rate of the oven's detection point based on the temperature value of the detection point includes: determining the temperature rise rate of the oven's detection point based on the difference between the temperature values ​​of the detection points corresponding to two adjacent sampling periods.

[0064] The insulation parameters of the detection points include the insulation parameters of the first detection point, the insulation parameters of the second detection point, and the insulation parameters of the third detection point; accordingly, the insulation parameters of the detection points of the oven are determined based on the temperature rise rate of the detection points, including: calculating the insulation parameters of the first detection point, the insulation parameters of the second detection point, and the insulation parameters of the third detection point based on the temperature rise rate of the detection points using formula (1);

[0065]

[0066] in, A1 is the temperature rise rate of the detection point, B2 is the heat preservation parameter of the first detection point, C2 is the heat preservation parameter of the second detection point, C2 is the heat preservation parameter of the third detection point, and t is the heating time of the oven.

[0067] S120. Determine the center point insulation parameter corresponding to the temperature center point inside the oven based on the insulation parameter of the detection point.

[0068] Among them, the center point insulation parameter is a parameter related to the heating and insulation performance of the current oven. The center point insulation parameter can be a constant. Depending on the heating and insulation performance of the oven itself, different ovens can have the same center point insulation parameter, or different ovens can have different center point insulation parameters. The advantage of the technical solution provided in this embodiment is that: the center point insulation parameter corresponding to the current oven is determined according to the heating and insulation performance of the current oven, so as to adapt to the heating and insulation performance of the current oven, thereby improving the accuracy of the oven center point temperature calculation.

[0069] It is understandable that the insulation parameters at the probe point and the insulation parameters at the center point are related parameters with a corresponding relationship. At the same time, the insulation parameters at the probe point and the insulation parameters at the center point are related to the temperature rise performance of the oven. Therefore, the insulation parameters at the probe point and the insulation parameters at the center point can determine the accuracy of the temperature estimation at the center point of the oven.

[0070] Furthermore, determining the center point insulation parameter corresponding to the temperature center point inside the oven based on the insulation parameter of the detection point includes: confirming the center point insulation parameter corresponding to the temperature center point inside the oven that corresponds to the insulation parameter of the detection point from a preset insulation parameter characteristic relationship list.

[0071] S130. Determine the center point temperature equation of the oven based on the center point insulation parameters, and determine the temperature value of the oven through the center point temperature equation.

[0072] Furthermore, the center point insulation parameters include a first center point insulation parameter, a second center point insulation parameter, and a third center point insulation parameter; correspondingly, determining the center point temperature equation of the oven based on the center point insulation parameters includes: establishing formula (2) as the center point temperature equation of the oven based on the center point insulation parameters:

[0073]

[0074] Wherein, T_center_point is the temperature value at the center point of the oven, T_probe_point is the temperature value at the probe point of the oven, A1 is the insulation parameter at the first center point, B1 is the insulation parameter at the second center point, C1 is the insulation parameter at the third center point, t is the heating time of the oven, and D1 and D2 are the initial temperature constants of the oven.

[0075] Specifically, based on formula (2), by substituting the obtained oven probe temperature value and the oven heating time corresponding to the current obtained temperature value, the oven center point temperature value can be obtained, which is the oven temperature value to be obtained.

[0076] It is understood that before determining the center point temperature equation of the oven based on the center point insulation parameters, the process further includes: establishing a temperature field mathematical model of the oven using thermodynamic formulas, and determining the temperature rise equations for the detection points and the center point temperature rise equations for the temperature center point inside the oven based on the temperature field mathematical model; correspondingly, determining the center point temperature equation of the oven based on the center point insulation parameters includes: obtaining the center point temperature equation of the oven based on the detection point temperature rise equation and the center point temperature rise equation.

[0077] It should be noted that the oven involved in this embodiment can be a household appliance oven used for baking food, or it can be an industrial oven. This embodiment does not impose any restrictions on this.

[0078] The technical solution of this invention obtains the temperature values ​​of detection points corresponding to temperature detection points inside the oven in multiple sampling periods, and determines the oven's detection point insulation parameters based on these temperature values; determines the center point insulation parameters corresponding to the temperature center point inside the oven based on these detection point insulation parameters; determines the oven's center point temperature equation based on these center point insulation parameters, and determines the oven's temperature value using these center point temperature equations. This solves the problem of low estimation accuracy and low precision caused by the unique center point temperature measurement method in existing technologies, thereby improving the accuracy and precision of oven temperature detection.

[0079] Example 2

[0080] Figure 4This is a flowchart illustrating a method for determining oven temperature according to Embodiment 2 of the present invention. This embodiment is an optimization based on the above embodiment.

[0081] Accordingly, the method in this embodiment specifically includes:

[0082] S210. Obtain the temperature values ​​of the detection points corresponding to the temperature detection points inside the oven during multiple sampling periods.

[0083] S220. Determine the temperature rise rate of the oven's detection point based on the temperature value of the detection point.

[0084] Furthermore, determining the oven's detection point temperature rise rate value based on the detection point temperature value includes: determining the oven's detection point temperature rise rate value based on the difference between the detection point temperature values ​​corresponding to two adjacent sampling periods.

[0085] Specifically, the temperature rise rate of the oven's probe point can be obtained by subtracting the probe point temperature value obtained in the previous sampling cycle from the probe point temperature value obtained in the current sampling cycle.

[0086] S230. Determine the heat preservation parameters of the oven's detection point based on the temperature rise rate value of the detection point.

[0087] Furthermore, the insulation parameters of the detection point include the insulation parameters of the first detection point, the insulation parameters of the second detection point, and the insulation parameters of the third detection point;

[0088] Accordingly, the oven's heat preservation parameters for the detection point are determined based on the temperature rise rate value at the detection point, including:

[0089] The insulation parameters of the first detection point, the second detection point, and the third detection point are calculated using formula (1) based on the temperature rise rate value of the detection point.

[0090]

[0091] in, A1 is the temperature rise rate of the detection point, B2 is the heat preservation parameter of the first detection point, C2 is the heat preservation parameter of the second detection point, C2 is the heat preservation parameter of the third detection point, and t is the heating time of the oven.

[0092] Figure 5 This is a schematic diagram of the temperature rise curve of the oven during operation according to an embodiment of the present invention. See also... Figure 5Based on the above embodiments, due to the oven's own system inertia, during the first t min (approximately 0.5 min, the time t varies depending on the oven's structure) of the oven preheating, the temperature value at the oven's center point remains almost unchanged. At this time, the temperature rise curve at the center point does not satisfy formula (1). After t min, the temperature rise curve begins to conform to the pattern of formula (1) (see [reference]). Figure 5 (The part circled in dashed circles) In order to minimize the influence of oven system inertia, sampling is performed at intervals of [t+1.5, t+2.5] minutes. Based on the temperature rise rate value of the detection point, the heat preservation parameters of the oven detection point are determined, that is, A2 is the heat preservation parameter of the first detection point, B2 is the heat preservation parameter of the second detection point, and C2 is the heat preservation parameter of the third detection point.

[0093] Understandably, the temperature rise rate at the probe point is used to characterize the oven's heating and heat preservation characteristics, and the parameter is stable and easy to measure, which helps to eliminate the influence of time and other parameters on the estimation of the oven's center point temperature.

[0094] S240. Confirm the center point insulation parameter corresponding to the temperature center point inside the oven that corresponds to the insulation parameter of the detection point from the preset insulation parameter characteristic relationship list.

[0095] In this embodiment, the temperature rise performance of the oven is mainly related to the heating rod power and the insulation coefficient of the insulation cotton. Since the two are equivalent, it is only necessary to determine the relationship between one of the coefficients and (A2,B2,C2). Therefore, this embodiment takes the insulation coefficient of the oven insulation cotton as an example for explanation.

[0096] During the oven development and testing process, based on the performance variation characteristics of the insulation cotton (i.e., determined by the supplier through experiments), the correspondence between (A2,B2,C2) and (A1,B1,C1) is determined through theoretical analysis, simulation analysis, or experiments. This correspondence is then tabulated or fitted into an equation (to obtain a preset list of insulation parameter characteristic relationships) and written into the oven's control program.

[0097] Specifically, during actual use, the oven calculates the value of (A2,B2,C2) within a set sampling time period during the preheating stage. By comparing it with the value written into the program in advance, the range is found, and the corresponding (A1,B1,C1) is substituted into formula (2). This formula is used as the temperature estimation equation for the current oven operation, so as to achieve dynamic optimization of the estimation equation in this way.

[0098] S250. Establish a temperature field mathematical model of the oven using thermodynamic formulas, and determine the temperature rise equations for the detection points and the center point based on the temperature field mathematical model.

[0099] Figure 6This is a schematic diagram of the oven model provided in an embodiment of the present invention. See also... Figure 6 The temperature field mathematical model of the oven is established using thermodynamic formulas, as shown in formula (3):

[0100]

[0101] in:

[0102] M—mass of the heating rod; T i —Oven temperature;

[0103] C—specific heat; T0—ambient temperature;

[0104] H—heat transfer coefficient; Q i —Input calories;

[0105] A—Heat transfer area; Q0—Heat dissipation.

[0106] Based on the temperature field mathematical model, the temperature rise equations for the detection points inside the oven and the temperature rise equations for the center points are determined, i.e., formula (4):

[0107]

[0108] in:

[0109] T 中心点 —Temperature at the geometric center of the oven cavity;

[0110] T 探测点 —Temperature detected by the temperature sensor;

[0111] t — heating time;

[0112] A, B, C — Correlation coefficients with oven heating and heat preservation performance;

[0113] D — Correlation coefficient with the initial oven temperature.

[0114] Further simplification of formula (4) yields formula (2), which is the temperature equation at the center point of the oven.

[0115] S260. Based on the center point insulation parameters, the center point temperature equation of the oven is obtained according to the detection point temperature rise equation and the center point temperature rise equation.

[0116] Furthermore, the center point insulation parameters include a first center point insulation parameter, a second center point insulation parameter, and a third center point insulation parameter; correspondingly, determining the center point temperature equation of the oven based on the center point insulation parameters includes: establishing formula (2) as the center point temperature equation of the oven based on the center point insulation parameters:

[0117]

[0118] Among them, T 中心点 T represents the temperature at the center point of the oven. 探测点 A1 is the temperature value of the oven's detection point, B1 is the insulation parameter of the first center point, C1 is the insulation parameter of the second center point, t is the heating time of the oven, and D1 and D2 are the initial temperature constants of the oven.

[0119] S270. Determine the temperature value of the oven using the center point temperature equation.

[0120] Compared with the method of using a fixed oven center point temperature estimation equation, the method proposed in this embodiment of the invention can dynamically optimize the estimation equation (i.e., formula (2)) according to the changes in the performance of the oven heating tube and insulation cotton, and has the following advantages: In the actual production process of the oven, the performance of the heating tube and insulation cotton has a certain fluctuation range. 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. For a fixed estimation equation, its prediction accuracy will become lower and lower, which will affect the oven temperature control performance. The dynamically optimized parameter equation (i.e., formula (2)) provided in this embodiment of the invention can adjust the equation parameters according to the changes in oven performance, thereby ensuring the accuracy of temperature prediction.

[0121] Example 3

[0122] Figure 7 This is a structural diagram of an oven temperature determination device provided in Embodiment 3 of the present invention. This embodiment is applicable to situations where the temperature at the geometric center point inside the oven cavity needs to be accurately estimated.

[0123] like Figure 7 As shown, the device includes: a detection point insulation parameter determination module 310, a center point insulation parameter determination module 320, and a temperature value determination module 330, wherein:

[0124] The detector point insulation parameter determination module 310 is used to obtain the detector point temperature value corresponding to the temperature detector point inside the oven in multiple sampling cycles, and determine the detector point insulation parameter of the oven based on the detector point temperature value.

[0125] The center point insulation parameter determination module 320 is used to determine the center point insulation parameter corresponding to the temperature center point inside the oven based on the detection point insulation parameter.

[0126] The temperature value determination module 330 is used to determine the center point temperature equation of the oven based on the center point insulation parameters, and to determine the temperature value of the oven through the center point temperature equation.

[0127] The oven temperature determination device of this embodiment acquires the temperature values ​​of detection points corresponding to temperature detection points inside the oven in multiple sampling periods, and determines the oven's detection point insulation parameters based on the detection point temperature values; it then determines the center point insulation parameters corresponding to the temperature center point inside the oven based on the detection point insulation parameters; finally, it determines the oven's center point temperature equation based on the center point insulation parameters, and uses the center point temperature equation to determine the oven's temperature value. This solves the problem of low estimation accuracy and low precision caused by the unique center point temperature measurement method in the prior art, thereby improving the accuracy and precision of oven temperature detection.

[0128] Based on the above embodiments, the heat preservation parameters of the oven's detection point are determined according to the temperature value of the detection point, including:

[0129] The temperature rise rate of the oven's detection point is determined based on the temperature value at the detection point.

[0130] The heat preservation parameters of the oven's detection points are determined based on the temperature rise rate value of the detection points.

[0131] Based on the above embodiments, determining the temperature rise rate of the oven's detection point according to the temperature value of the detection point includes:

[0132] The temperature rise rate of the oven's detection point is determined based on the difference in temperature values ​​at the detection points corresponding to two adjacent sampling periods.

[0133] Based on the above embodiments, the insulation parameters of the detection point include the insulation parameters of the first detection point, the insulation parameters of the second detection point, and the insulation parameters of the third detection point;

[0134] Accordingly, the oven's heat preservation parameters for the detection point are determined based on the temperature rise rate value at the detection point, including:

[0135] The insulation parameters of the first detection point, the second detection point, and the third detection point are calculated using formula (1) based on the temperature rise rate value of the detection point.

[0136]

[0137] in, A1 is the temperature rise rate of the detection point, B2 is the heat preservation parameter of the first detection point, C2 is the heat preservation parameter of the second detection point, C2 is the heat preservation parameter of the third detection point, and t is the heating time of the oven.

[0138] Based on the above embodiments, the center point insulation parameters include a first center point insulation parameter, a second center point insulation parameter, and a third center point insulation parameter;

[0139] Accordingly, determining the center point temperature equation of the oven based on the center point insulation parameters includes:

[0140] Formula (2) is established based on the center point insulation parameters as the center point temperature equation of the oven:

[0141]

[0142] Among them, T 中心点 T represents the temperature at the center point of the oven. 探测点 A1 is the temperature value of the oven's detection point, B1 is the insulation parameter of the first center point, C1 is the insulation parameter of the second center point, t is the heating time of the oven, and D1 and D2 are the initial temperature constants of the oven.

[0143] Based on the above embodiments, before determining the center point temperature equation of the oven based on the center point insulation parameters, the method further includes:

[0144] A temperature field mathematical model of the oven is established using thermodynamic formulas, and the temperature rise equations for the detection points and the center point are determined based on the temperature field mathematical model.

[0145] Accordingly, determining the center point temperature equation of the oven based on the center point insulation parameters includes:

[0146] Based on the center point insulation parameters, the center point temperature equation of the oven is obtained according to the detection point temperature rise equation and the center point temperature rise equation.

[0147] Based on the above embodiments, the center point insulation parameters corresponding to the temperature center point inside the oven are determined according to the insulation parameters of the detection point, including:

[0148] Confirm the center point insulation parameter corresponding to the temperature center point inside the oven that corresponds to the insulation parameter of the detection point from the preset insulation parameter characteristic relationship list.

[0149] 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 for executing the oven temperature determination method.

[0150] Example 4

[0151] Figure 8 This is a schematic diagram of the structure of an oven provided in Embodiment 4 of the present invention, as shown below. Figure 8As shown, the oven includes an oven body (not shown), a processor 810, a memory 820, an input device 830, and an output device 840; the oven may have one or more processors 810. Figure 8 Taking a processor 810 as an example; the processor 810 and the storage device 820 are disposed inside the oven body, and the processor 810, storage device 820, input device 830 and output device 840 in the oven can be connected via a bus or other means. Figure 8 Taking the example of a connection between China and Israel via a bus.

[0152] The memory 820, 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 oven temperature determination method in this embodiment of the invention (e.g., the detection point insulation parameter determination module 310, the center point insulation parameter determination module 320, and the temperature value determination module 330 in the oven temperature determination device). The processor 810 executes various functional applications and data processing of the oven by running the software programs, instructions, and modules stored in the memory 820, thereby realizing the oven temperature determination method described above.

[0153] The memory 820 may primarily include a program storage area and a data storage area. The program storage area may store the operating system and at least one application program required for a given function; the data storage area may store data created based on terminal usage. Furthermore, the memory 820 may include high-speed random access memory and non-volatile memory, such as at least one disk storage device, flash memory, or other non-volatile solid-state storage device. In some instances, the memory 820 may further include memory remotely located relative to the processor 810, which can be connected to the oven via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0154] Input device 830 can be used to receive input digital or character information, and to generate key signal inputs related to user settings and function control of the oven. Output device 840 may include display devices such as a display screen.

[0155] Example 5

[0156] Embodiment 5 of the present invention also provides a storage medium containing computer-executable instructions, which, when executed by a computer processor, are used to perform a method for determining an oven temperature, the method comprising:

[0157] The temperature values ​​of the detection points inside the oven are obtained in multiple sampling periods, and the temperature values ​​of the detection points are used to determine the heat preservation parameters of the oven's detection points.

[0158] Determine the center point insulation parameters corresponding to the temperature center point inside the oven based on the insulation parameters of the detection points.

[0159] The center point temperature equation of the oven is determined based on the center point insulation parameters, and the temperature value of the oven is determined through the center point temperature equation.

[0160] Of course, the computer-executable instructions provided in the embodiments of the present invention are not limited to the method operations described above, but can also perform related operations in the oven temperature determination method provided in any embodiment of the present invention.

[0161] Based on the above description of the implementation methods, those skilled in the art can clearly understand that the present invention can be implemented using software and necessary general-purpose hardware, and of course, it can also be implemented using hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This 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, hard disk, or optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0162] It is worth noting that in the embodiments of the oven temperature determination device described above, the various units and modules included are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be achieved; in addition, the specific names of each functional unit are only for easy differentiation and are not used to limit the scope of protection of the present invention.

[0163] Note that the above description is merely a preferred embodiment 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 various obvious changes, readjustments, and substitutions can be made 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 which is determined by the scope of the appended claims.

Claims

1. A method of determining an oven temperature, characterized by, The method comprises the following steps: obtaining temperature values of a temperature detection point in an oven in a plurality of sampling periods, and determining a detection point heat preservation parameter of the oven according to the temperature values; determining a center point heat preservation parameter of a temperature center point in the oven according to the detection point heat preservation parameter; determining a center point temperature equation of the oven based on the center point heat preservation parameter, and determining a temperature value of the oven through the center point temperature equation; the center point heat preservation parameter comprises a first center point heat preservation parameter, a second center point heat preservation parameter and a third center point heat preservation parameter; correspondingly, determining the center point temperature equation of the oven based on the center point heat preservation parameter comprises: establishing formula (2) as the center point temperature equation of the oven based on the center point heat preservation parameter: (2) wherein, is a center point temperature value of the oven, is a probe point temperature value of the oven, is a first center point holding parameter, is a second center point holding parameter, is a third center point holding parameter, t is a heating time of the oven, and D1 and D2 are initial temperature constants of the oven.

2. The determination method according to claim 1, characterized in that, determining the detection point heat preservation parameter of the oven according to the temperature values comprises: determining a detection point temperature rising rate value of the oven according to the temperature values; determining the detection point heat preservation parameter of the oven based on the detection point temperature rising rate value.

3. The determination method according to claim 2, characterized in that, determining the detection point temperature rising rate value of the oven according to the temperature values comprises: determining the detection point temperature rising rate value of the oven according to the difference between the temperature values of adjacent two sampling periods.

4. The determination method according to claim 2, characterized in that, the detection point heat preservation parameter comprises a first detection point heat preservation parameter, a second detection point heat preservation parameter and a third detection point heat preservation parameter; wherein the detection point is a single detection point; correspondingly, determining the detection point heat preservation parameter of the oven based on the detection point temperature rising rate value comprises: determining the first detection point heat preservation parameter, the second detection point heat preservation parameter and the third detection point heat preservation parameter through fitting formula (1) based on the detection point temperature rising rate value; (1) wherein, is the temperature rise rate value of the detection point, is the holding parameter of the first detection point, is the holding parameter of the second detection point, is the holding parameter of the third detection point, and t is the heating time of the oven.

5. The determination method according to claim 1, characterized in that, before determining the center point temperature equation of the oven based on the center point heat preservation parameter, the method further comprises: establishing a temperature field mathematical model of the oven through a thermodynamic formula, and determining a detection point temperature rising equation corresponding to the temperature detection point in the oven and a center point temperature rising equation corresponding to the temperature center point in the oven according to the temperature field mathematical model; correspondingly, determining the center point temperature equation of the oven based on the center point heat preservation parameter comprises: obtaining the center point temperature equation of the oven according to the detection point temperature rising equation and the center point temperature rising equation based on the center point heat preservation parameter.

6. The determination method of claim 1, wherein, determining the center point heat preservation parameter of the temperature center point in the oven according to the detection point heat preservation parameter comprises: confirming the center point heat preservation parameter of the temperature center point in the oven corresponding to the detection point heat preservation parameter from a pre-set heat preservation parameter characteristic relationship list.

7. An apparatus for determining an oven temperature for performing the determining method according to any one of claims 1 to 6, characterized in that The method comprises the following steps: a detection point heat preservation parameter determination module is configured to obtain temperature values of a temperature detection point in an oven in a plurality of sampling periods, and determine a detection point heat preservation parameter of the oven according to the temperature values; a center point heat preservation parameter determination module is configured to determine a center point heat preservation parameter of a temperature center point in the oven according to the detection point heat preservation parameter; A temperature value determining module is configured to determine a center point temperature equation of the oven based on the center point holding parameter, and determine a temperature value of the oven by using the center point temperature equation.

8. An oven, characterized in that The oven comprises: an oven body; one or more processors; a storage device configured to store one or more programs; the processor and the storage device are arranged inside the oven body, and 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 temperature of the oven according to any one of claims 1-6.

9. A computer readable storage medium having stored thereon a computer program, characterized in that, The program is executed by the processor to implement the method for determining the temperature of the oven according to any one of claims 1-6. The program is executed by the processor to implement the method for determining the temperature of the oven according to any one of claims 1-6.

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