Correction method of infrared temperature in refrigerator compartment

Abstract

The present application relates to a method for correcting the infrared temperature of a refrigerator compartment. The method includes the following steps: when simultaneously satisfying the conditions that the current rate of change of the refrigerator temperature is less than a preset rate of change threshold, and the minimum NTC temperature after the refrigeration unit stops refrigeration and the maximum NTC temperature after the refrigeration unit starts refrigeration are recorded, confirming that the refrigerator is in a temperature-stable state, obtaining a first NTC temperature, a first infrared temperature, a second NTC temperature, and a second infrared temperature in the current temperature-stable phase, calculating an infrared temperature correction coefficient, and correcting the infrared temperature in the next temperature-stable phase using the infrared temperature correction coefficient to obtain a corrected infrared temperature. The method solves the problem of inaccurate infrared temperature detection in the refrigerator compartment.

Description

Technical Field

[0001] The present application relates to the field of refrigerators, and in particular to a method for correcting infrared temperature of a refrigerator compartment. Background Art

[0002] At present, with the improvement of the national economy, people's requirements for living standards have also increased, especially in terms of food preservation requirements. Refrigerators, as an appliance used to preserve daily food at low temperatures, have become standard equipment in modern people's homes. Therefore, people's technical requirements for the food preservation effect of refrigerators have naturally increased.

[0003] Most existing refrigerators use NTC temperature sensors for temperature detection, but this type of temperature sensor has a slow detection response speed and the temperature control of food temperature changes will lag behind. A small number of refrigerators use infrared temperature sensors for temperature detection. Since infrared temperature sensor detection is related to the emissivity of the object being measured, the emissivity of the object being measured cannot be simply obtained, and the infrared temperature without emissivity correction has a large error. Therefore, refrigerators currently on the market that use infrared temperature sensors generally use the change in infrared temperature for auxiliary judgment of temperature control. Temperature control based on infrared temperature changes can speed up the temperature control response speed, but the start and stop points will be offset. Alternatively, there is another application method. The infrared temperature sensor does not directly irradiate the food, but irradiates the surface of a temperature sensing plate with a certain emissivity to obtain the temperature. Although this temperature measurement has a fast response speed, because it irradiates the surface of the temperature sensing plate, it does not directly sense the temperature of the food, and the speed and accuracy of food temperature sensing still lag and vary.

[0004] With regard to the problem of inaccurate infrared temperature detection of refrigerator compartments in related technologies, no effective solution has been proposed so far. Summary of the Invention

[0005] In this embodiment, a method for correcting the infrared temperature of a refrigerator compartment is provided to solve the problem of inaccurate infrared temperature detection of a refrigerator compartment in the related art.

[0006] In a first aspect, this embodiment provides a method for correcting infrared temperature of a refrigerator compartment, comprising:

[0007] When the current change rate of the refrigerator temperature is less than a preset change rate threshold, it is determined whether the minimum NTC temperature after the refrigeration unit stops refrigeration is recorded;

[0008] If yes, determine whether the maximum NTC temperature after the refrigeration unit starts cooling is recorded;

[0009] If so, make sure the refrigerator is in a stable temperature state;

[0010] Obtain the first NTC temperature, first infrared temperature, second NTC temperature, and second infrared temperature of the current temperature stabilization stage; wherein, a temperature stabilization stage is from the moment of the minimum NTC temperature to the moment of the maximum NTC temperature, or a temperature stabilization stage is from the moment of the maximum NTC temperature to the moment of the minimum NTC temperature; the first NTC temperature is an NTC temperature within a preset first temperature range after the refrigeration unit stops refrigeration, and the first infrared temperature is the infrared temperature corresponding to the moment the first NTC temperature is obtained; the second NTC temperature is an NTC temperature within a preset second temperature range after the refrigeration unit starts refrigeration, and the second infrared temperature is the infrared temperature corresponding to the moment the second NTC temperature is obtained;

[0011] Calculating the difference between the second NTC temperature and the first NTC temperature to obtain an NTC temperature difference;

[0012] calculating a difference between the second infrared temperature and the first infrared temperature to obtain an infrared temperature difference;

[0013] Calculate the ratio of NTC temperature difference to infrared temperature difference to obtain infrared temperature correction coefficient;

[0014] The infrared temperature of the next temperature stabilization stage is corrected by the infrared temperature correction coefficient to obtain the corrected infrared temperature; wherein, the next temperature stabilization stage is a temperature stabilization stage continuous with the current temperature stabilization stage, and the second NTC temperature of the current temperature stabilization stage is used as the first NTC temperature corresponding to the next temperature stabilization stage; the second infrared temperature of the current temperature stabilization stage is used as the first infrared temperature corresponding to the next temperature stabilization stage.

[0015] In some embodiments, the first NTC temperature is the minimum NTC temperature after the refrigeration unit stops refrigerating, and the second NTC temperature is the maximum NTC temperature after the refrigeration unit starts refrigerating.

[0016] In some embodiments, when the current rate of change of the refrigerator temperature is greater than a preset rate of change threshold, the method further includes:

[0017] Confirm that the refrigerator is in a temperature-unstable state, and clear the first NTC temperature, the first infrared temperature, the second NTC temperature, the second infrared temperature, and the infrared temperature correction coefficient obtained when the refrigerator is in a temperature-stable state.

[0018] In some of the embodiments, the further comprising: detecting the corrected infrared temperature of the refrigerator in real time;

[0019] When the corrected infrared temperature exceeds a first preset threshold value other than the power-on temperature, it is determined that the refrigerator is in a temperature unstable state, and the first NTC temperature, the first infrared temperature, the second NTC temperature, the second infrared temperature, and the infrared temperature correction coefficient obtained when the refrigerator is in a temperature stable state are cleared;

[0020] Re-obtain the infrared temperature correction coefficient for the new temperature stabilization stage.

[0021] In some of the embodiments, the further comprising: detecting the corrected infrared temperature in real time;

[0022] When the corrected infrared temperature is lower than a second preset threshold value below the shutdown temperature, it is determined that the refrigerator is in a temperature unstable state, and the first NTC temperature, the first infrared temperature, the second NTC temperature, the second infrared temperature, and the infrared temperature correction coefficient obtained when the refrigerator is in a temperature stable state are cleared;

[0023] Re-obtain the infrared temperature correction coefficient for the new temperature stabilization stage.

[0024] In some embodiments, further comprising:

[0025] Determine whether the corrected infrared temperature or real-time NTC temperature is greater than or equal to the power-on point temperature;

[0026] If so, the refrigeration unit of the refrigerator is started for refrigeration.

[0027] In some embodiments, further comprising:

[0028] Determine whether the corrected infrared temperature or real-time NTC temperature is less than or equal to the shutdown point temperature;

[0029] If so, the refrigeration unit of the refrigerator is stopped for refrigeration.

[0030] In some embodiments, when the current change rate of the refrigerator temperature is less than a preset change rate threshold and the minimum NTC temperature after the refrigeration unit stops refrigeration is not recorded, the method further includes:

[0031] Continue to detect the minimum NTC temperature after the refrigeration unit stops refrigeration.

[0032] In some embodiments, when the current change rate of the refrigerator temperature is less than a preset change rate threshold, and the minimum NTC temperature after the refrigeration unit stops refrigeration is recorded, but the maximum NTC temperature after the refrigeration unit starts refrigeration is not recorded, the further comprising:

[0033] Continue to detect the maximum NTC temperature after the refrigeration unit starts cooling.

[0034] In a second aspect, a refrigerator compartment infrared temperature correction device is provided in this embodiment, comprising: a first judgment module, a second judgment module, a confirmation module, an acquisition module, a calculation module, and a correction module, wherein:

[0035] A first judgment module is used to judge whether a minimum NTC temperature after the refrigeration unit stops refrigeration is recorded when the current change rate of the refrigerator temperature is less than a preset change rate threshold;

[0036] a second judgment module configured to, when the current rate of change of the refrigerator temperature is less than a preset rate of change threshold and the minimum NTC temperature after the refrigeration unit stops refrigeration is recorded, determine whether the maximum NTC temperature after the refrigeration unit starts refrigeration is recorded;

[0037] a confirmation module, configured to confirm that the refrigerator is in a temperature stable state when the current rate of change of the refrigerator temperature is less than a preset rate of change threshold, and when the minimum NTC temperature after the refrigeration unit stops refrigeration is recorded, and the maximum NTC temperature after the refrigeration unit starts refrigeration is recorded;

[0038] An acquisition module, configured to acquire a first NTC temperature, a first infrared temperature, a second NTC temperature, and a second infrared temperature in a current temperature stabilization phase; wherein a temperature stabilization phase is defined as a period from the time of the minimum NTC temperature to the time of the maximum NTC temperature, or a period from the time of the maximum NTC temperature to the time of the minimum NTC temperature; the first NTC temperature is an NTC temperature within a preset first temperature range after the refrigeration unit stops refrigeration, and the first infrared temperature is an infrared temperature corresponding to the moment when the first NTC temperature is acquired; the second NTC temperature is an NTC temperature within a preset second temperature range after the refrigeration unit starts refrigeration, and the second infrared temperature is an infrared temperature corresponding to the moment when the second NTC temperature is acquired;

[0039] a calculation module, configured to calculate a difference between the second NTC temperature and the first NTC temperature to obtain an NTC temperature difference; calculate a difference between the second infrared temperature and the first infrared temperature to obtain an infrared temperature difference; and calculate a ratio of the NTC temperature difference to the infrared temperature difference to obtain an infrared temperature correction coefficient;

[0040] The correction module is used to correct the infrared temperature of the next temperature stabilization stage by using the infrared temperature correction coefficient to obtain the corrected infrared temperature; wherein the next temperature stabilization stage is a temperature stabilization stage continuous with the current temperature stabilization stage, and the second NTC temperature of the current temperature stabilization stage is used as the first NTC temperature corresponding to the next temperature stabilization stage; the second infrared temperature of the current temperature stabilization stage is used as the first infrared temperature corresponding to the next temperature stabilization stage.

[0041] Compared with the related art, the infrared temperature correction method for the refrigerator compartment provided in this embodiment determines whether the minimum NTC temperature after the refrigeration unit stops refrigeration is recorded when the current change rate of the refrigerator temperature is less than a preset change rate threshold; if so, determines whether the maximum NTC temperature after the refrigeration unit starts refrigeration is recorded; if so, confirms that the refrigerator is in a temperature stable state; obtains the first NTC temperature, the first infrared temperature, the second NTC temperature and the second infrared temperature of the current temperature stable stage; wherein, from the moment of the minimum NTC temperature to the moment of the maximum NTC temperature is a temperature stable stage, or from the moment of the maximum NTC temperature to the moment of the minimum NTC temperature is a temperature stable stage; the first NTC temperature belongs to the NTC temperature within the preset first temperature range after the refrigeration unit stops refrigeration, and the first infrared temperature is the infrared temperature corresponding to the moment when the first NTC temperature is obtained; the second NTC temperature is the infrared temperature corresponding to the moment when the first NTC temperature is obtained; Temperature C belongs to the NTC temperature within the preset second temperature range after the refrigeration unit starts refrigeration, and the second infrared temperature is the infrared temperature corresponding to the moment when the second NTC temperature is obtained; the difference between the second NTC temperature and the first NTC temperature is calculated to obtain the NTC temperature difference; the difference between the second infrared temperature and the first infrared temperature is calculated to obtain the infrared temperature difference; the ratio of the NTC temperature difference to the infrared temperature difference is calculated to obtain the infrared temperature correction coefficient; the infrared temperature of the next temperature stabilization stage is corrected by the infrared temperature correction coefficient to obtain the corrected infrared temperature; wherein the next temperature stabilization stage is a temperature stabilization stage continuous with the current temperature stabilization stage, and the second NTC temperature of the current temperature stabilization stage is used as the first NTC temperature corresponding to the next temperature stabilization stage; the second infrared temperature of the current temperature stabilization stage is used as the first infrared temperature corresponding to the next temperature stabilization stage, which solves the problem of inaccurate infrared temperature detection in the refrigerator compartment.

[0042] The details of one or more embodiments of the present application are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0044] Figure 1 This is a hardware structure block diagram of a terminal of the refrigerator compartment infrared temperature correction method according to this embodiment.

[0045] Figure 2 4 is a flow chart of the refrigerator compartment infrared temperature correction method of this embodiment.

[0046] Figure 3This is a temperature change curve diagram of the refrigerator in the temperature stabilization stage of this embodiment.

[0047] Figure 4 This is a flow chart of another refrigerator compartment infrared temperature correction method according to this embodiment.

[0048] Figure 5 1 is a structural block diagram of the infrared temperature correction device for the refrigerator compartment of this embodiment. DETAILED DESCRIPTION

[0049] In order to more clearly understand the purpose, technical solutions and advantages of the present application, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments.

[0050] Unless otherwise defined, the technical terms or scientific terms involved in this application should have the general meaning understood by people with ordinary skills in the technical field to which this application belongs. The words "one", "an", "a", "the", "these" and the like in this application do not indicate quantitative restrictions, and they can be singular or plural. The terms "include", "comprise", "have" and any variants thereof involved in this application are intended to cover non-exclusive inclusions; for example, a process, method and system, product or device comprising a series of steps or modules (units) is not limited to the listed steps or modules (units), but may include unlisted steps or modules (units), or may include other steps or modules (units) inherent to these processes, methods, products or devices. The words "connect", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "plurality" involved in this application refers to two or more. "And / or" describes the relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, and B exists alone. Generally, the character " / " indicates that the related objects are in an "or" relationship. The terms "first," "second," "third," etc. used in this application are only used to distinguish similar objects and do not represent a specific ordering of the objects.

[0051] The method embodiment provided in this embodiment can be executed in a terminal, a computer or a similar computing device. For example, running on a terminal, Figure 1 FIG. 1 is a block diagram of the hardware structure of the terminal of the refrigerator compartment infrared temperature correction method of this embodiment. Figure 1 As shown, the terminal may include one or more ( Figure 1Only one is shown) a processor 102 and a memory 104 for storing data, wherein the processor 102 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA. The above terminal may also include a transmission device 106 and an input and output device 108 for communication functions. It will be understood by those skilled in the art that Figure 1 The structure shown is only for illustration and does not limit the structure of the above terminal. Figure 1 More or fewer components than shown, or with Figure 1 Different configurations shown.

[0052] Memory 104 can be used to store computer programs, such as application software programs and modules, such as the computer program corresponding to the refrigerator compartment infrared temperature correction method in this embodiment. Processor 102 executes the computer program stored in memory 104 to execute various functional applications and data processing, thereby implementing the above-mentioned method. Memory 104 may include high-speed random access memory (RAM) and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some embodiments, memory 104 may further include memory remotely located from processor 102, and such remote memory may be connected to the terminal 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.

[0053] The transmission device 106 is used to receive or send data via a network. The network may include a wireless network provided by the terminal's telecommunications provider. In one embodiment, the transmission device 106 includes a network interface controller (NIC), which can be connected to other network devices via a base station to enable communication with the Internet. In another embodiment, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0054] In this embodiment, a method for correcting infrared temperature of a refrigerator compartment is provided. Figure 2 FIG. 1 is a flow chart of the refrigerator compartment infrared temperature correction method of this embodiment. Figure 2 As shown, the process includes the following steps:

[0055] Step S201, when the current change rate of the refrigerator temperature is less than the preset change rate threshold, determine whether the minimum NTC temperature after the refrigeration unit stops refrigeration is recorded; if so, determine whether the maximum NTC temperature after the refrigeration unit starts refrigeration is recorded; if so, confirm that the refrigerator is in a temperature stable state.

[0056] Specifically, in this embodiment, the refrigerator compartment temperature is detected using an NTC temperature sensor and an infrared sensor. The infrared temperature sensor can detect temperature changes of objects within the field of view, has a fast temperature sensing speed, and can detect the temperature of objects over the air. However, due to the different emissivity of measured objects such as food, food containers, and food packaging, the temperature detected by the infrared temperature sensor may be different from the actual temperature. Therefore, the collected infrared temperature needs to be corrected before use.

[0057] The stable temperature state of the refrigerator compartment refers to the state in which the refrigerator compartment temperature fluctuates smoothly with the start and stop of the refrigerator during the refrigeration process. During this process, the temperature of the refrigerator compartment changes slowly. During the refrigeration process, the temperature of the refrigerator compartment changes dynamically during the start and stop cycle. During the dynamic temperature change, if there is no door opening and closing, food taking and placing, special refrigeration mode (such as defrosting), etc., the temperature change in the compartment is smooth. In this embodiment, whether the refrigerator enters the stable temperature state needs to meet the following three conditions in order: Figure 3 This is a temperature change curve diagram of the refrigerator in the stable temperature stage of this embodiment. Figure 3 As shown: First, the current change rate of the refrigerator temperature needs to be less than the preset change rate threshold, and secondly, the minimum NTC temperature after the refrigerator refrigeration unit stops refrigeration needs to be detected first, that is, Figure 3 The NTC temperature corresponding to the midpoint B, and finally the maximum NTC temperature after the refrigeration unit starts cooling, that is Figure 3 The NTC temperature corresponding to the midpoint D. Due to the effect of temperature inertia, after the refrigeration unit stops cooling, the temperature will not rise immediately, but will continue to drop a little, that is, it will reach Figure 3 Point B in the figure is the point where it is more accurate to judge that the refrigerator has entered the temperature stabilization stage. Similarly, when the refrigeration unit starts to cool, the temperature will not drop immediately, but will continue to rise a little, that is, it will reach Figure 3 At point D in the figure, if the three conditions above are met, the refrigerator can be determined to have entered the temperature stabilization phase. Points B to D constitute the first temperature stabilization phase of this embodiment. Similarly, while the refrigerator is in the temperature stabilization phase, the minimum NTC temperature is continuously detected to obtain the NTC temperature at point F. At this point, the next temperature stabilization phase occurs from point D to point F. When the refrigerator temperature is stable, the infrared temperature changes rapidly, while the NTC temperature lags behind. Based on the stable correspondence between the two during the stable phase, the infrared temperature is corrected using the correction coefficient for the stable phase to obtain a more accurate infrared temperature.

[0058] Step S202, obtaining a first NTC temperature, a first infrared temperature, a second NTC temperature, and a second infrared temperature in a current temperature stabilization stage; wherein, a temperature stabilization stage is defined as a time from the minimum NTC temperature to the maximum NTC temperature, or a temperature stabilization stage is defined as a time from the maximum NTC temperature to the minimum NTC temperature; the first NTC temperature is an NTC temperature within a first temperature range after the refrigeration unit stops refrigeration, and the first infrared temperature is an infrared temperature corresponding to the time when the first NTC temperature is obtained; the second NTC temperature is an NTC temperature within a second temperature range after the refrigeration unit starts refrigeration, and the second infrared temperature is an infrared temperature corresponding to the time when the second NTC temperature is obtained.

[0059] Specifically, according to the above judgment conditions for the refrigerator to enter the temperature stabilization stage, when the refrigerator enters the temperature stabilization stage, if Figure 3 As shown, the period from the minimum NTC temperature to the maximum NTC temperature is a temperature stabilization stage, that is, Figure 3 From point B to point D in the figure is a temperature stabilization stage; or from the moment of maximum NTC temperature to the moment of minimum NTC temperature is a temperature stabilization stage, that is, Figure 3 From point D to point F in the figure is a temperature stabilization stage. BD is taken as the current temperature stabilization stage, and segment AB is taken as the preset first temperature interval. The NTC temperature at one time point in the first temperature interval is taken as the first NTC temperature T ntc_t1 , and obtain the first NTC temperature T ntc_t1 The infrared temperature corresponding to the moment is taken as the first infrared temperature T r_t1 ; CD segment is used as the preset second temperature interval, and the NTC temperature at one time point in the second temperature interval is taken as the second NTC temperature T ntc_t2 , and obtain the second NTC temperature T ntc_t2 The infrared temperature corresponding to the moment is taken as the second infrared temperature T r_t2 .

[0060] Step S203 , calculating the difference between the second NTC temperature and the first NTC temperature to obtain the NTC temperature difference; calculating the difference between the second infrared temperature and the first infrared temperature to obtain the infrared temperature difference; calculating the ratio of the NTC temperature difference to the infrared temperature difference to obtain the infrared temperature correction coefficient.

[0061] Specifically, the infrared temperature correction coefficient is calculated based on the first NTC temperature, the first infrared temperature, the second NTC temperature, and the second infrared temperature. The specific formula is as follows:

[0062] k=(T ntc_t2 -T ntc_t1 ) / (T r_t2 -Tr_t1 );

[0063] Wherein, k is the infrared temperature correction coefficient;

[0064] T ntc_t1 The first NTC temperature in the current temperature stabilization stage;

[0065] T ntc_t2 The second NTC temperature in the current temperature stabilization stage;

[0066] T r_t1 is the first infrared temperature corresponding to the current temperature stabilization stage;

[0067] T r_t2 It is the second infrared temperature corresponding to the current temperature stabilization stage.

[0068] Step S204, correcting the infrared temperature of the next temperature stabilization stage by the infrared temperature correction coefficient to obtain a corrected infrared temperature; wherein the next temperature stabilization stage is a temperature stabilization stage continuous with the current temperature stabilization stage, and the second NTC temperature of the current temperature stabilization stage is used as the first NTC temperature corresponding to the next temperature stabilization stage; the second infrared temperature of the current temperature stabilization stage is used as the first infrared temperature corresponding to the next temperature stabilization stage.

[0069] Specifically, if Figure 3 As shown, BD and DF are two consecutive temperature stabilization stages. When BD is the current temperature stabilization stage, DF is the next temperature stabilization stage in this embodiment. The temperature interval CD of the second NTC temperature in the BD temperature stabilization stage serves as the temperature interval of the first NTC temperature in the next temperature stabilization stage DF, and the second infrared temperature in the BD temperature stabilization stage serves as the second infrared temperature in the next temperature stabilization stage DF. Therefore, when in the DF temperature stabilization stage, the second NTC temperature and second infrared temperature in the BD temperature stabilization stage can be used to calculate the infrared temperature correction coefficient for the DF temperature stabilization stage. The infrared temperature correction coefficient calculated in the BD temperature stabilization stage is used to correct the infrared temperature in the DF temperature stabilization stage to obtain the corrected infrared temperature in the DF stage. The specific infrared temperature correction formula is as follows:

[0070] T r_cro_ti =T ntc_t1 +k×(T r_ti -T r_t1 );

[0071] Among them, T r_cro_ti is the corrected infrared temperature at time ti corresponding to the next temperature stabilization stage DF;

[0072] T ntc_t1The first NTC temperature corresponding to BD in the current temperature stabilization stage;

[0073] k is the infrared temperature correction coefficient of BD in the current temperature stabilization stage;

[0074] T r_ti is the infrared temperature at the i-th moment corresponding to the next temperature stabilization stage DF;

[0075] T r_t1 It is the first infrared temperature corresponding to the current temperature stabilization stage BD.

[0076] Similarly, a new infrared temperature correction coefficient is calculated based on the NTC temperature and infrared temperature in the new stable stage, and the infrared temperature in the next temperature stable stage is corrected based on the new infrared temperature correction coefficient to ensure the accuracy of the infrared temperature in each temperature stable stage.

[0077] Through the above steps S201 to S204, when the current change rate of the refrigerator temperature is less than the preset change rate threshold, and the minimum NTC temperature after the refrigeration unit stops refrigeration and the maximum NTC temperature after the refrigeration unit starts refrigeration are recorded; confirm that the refrigerator is in a temperature stable state; obtain the first NTC temperature, the first infrared temperature, the second NTC temperature and the second infrared temperature of the current temperature stable stage; wherein, from the moment of the minimum NTC temperature to the moment of the maximum NTC temperature is a temperature stable stage, or from the moment of the maximum NTC temperature to the moment of the minimum NTC temperature is a temperature stable stage; the first NTC temperature belongs to the NTC temperature within the preset first temperature range after the refrigeration unit stops refrigeration, the first infrared temperature is the infrared temperature corresponding to the moment when the first NTC temperature is obtained; the second NTC temperature belongs to The NTC temperature within the preset second temperature range after the refrigeration unit starts cooling, the second infrared temperature is the infrared temperature corresponding to the moment when the second NTC temperature is obtained; the difference between the second NTC temperature and the first NTC temperature is calculated to obtain the NTC temperature difference; the difference between the second infrared temperature and the first infrared temperature is calculated to obtain the infrared temperature difference; the ratio of the NTC temperature difference to the infrared temperature difference is calculated to obtain the infrared temperature correction coefficient; the infrared temperature of the next temperature stabilization stage is corrected by the infrared temperature correction coefficient to obtain the corrected infrared temperature; wherein the next temperature stabilization stage is a temperature stabilization stage continuous with the current temperature stabilization stage, and the second NTC temperature of the current temperature stabilization stage is used as the first NTC temperature corresponding to the next temperature stabilization stage; the second infrared temperature of the current temperature stabilization stage is used as the first infrared temperature corresponding to the next temperature stabilization stage. Compared to the prior art method of using infrared temperature changes to assist in temperature control judgment, this embodiment calculates an infrared temperature correction coefficient using the first NTC temperature within a preset first temperature range, the first infrared temperature, the second NTC temperature within a preset second temperature range, and the second infrared temperature when the refrigerator is in a temperature stabilization phase. This infrared temperature correction coefficient is then used to correct the infrared temperature in the next temperature stabilization phase. The first preset temperature range is the temperature from the refrigeration unit shutdown point to the minimum NTC temperature, while the second preset temperature range is the temperature from the refrigeration unit startup point to the maximum NTC temperature. This allows the most stable NTC and infrared temperatures to be obtained, and the infrared temperature to be continuously and dynamically corrected accordingly, thereby improving the accuracy of infrared temperature detection in the refrigerator compartment.

[0078] In some embodiments, the first NTC temperature is the minimum NTC temperature after the refrigeration unit stops refrigerating, and the second NTC temperature is the maximum NTC temperature after the refrigeration unit starts refrigerating.

[0079] Specifically, when the refrigerator is in the temperature stabilization stage, Figure 3As shown, point A is the refrigerator's stop point. When the refrigerator compartment temperature reaches the stop point, the refrigerator stops cooling. At this point, the refrigerator compartment temperature does not rise immediately, but instead drops due to temperature inertia for a period of time to reach point B. Point B is the optimal time for NTC temperature acquisition during the temperature stabilization phase. In this embodiment, the NTC temperature at point B, corresponding to the minimum NTC temperature detected after the refrigeration unit stops cooling, is used as the optimal first NTC temperature, and the infrared temperature corresponding to this time is also used as the optimal first infrared temperature. Similarly, point C is the refrigerator's start point. When the refrigerator compartment temperature reaches the start point, the refrigerator starts cooling. At this point, the refrigerator compartment temperature does not drop immediately, but instead rises due to temperature inertia for a period of time to reach point D. Point D is the optimal time for NTC temperature acquisition during the temperature stabilization phase. In this embodiment, the NTC temperature at point D, corresponding to the maximum NTC temperature detected after the refrigeration unit starts cooling, is used as the optimal second NTC temperature, and the infrared temperature corresponding to this time is also used as the optimal second infrared temperature. Therefore, in this embodiment, the NTC and infrared temperatures corresponding to these times are used to calculate the infrared correction coefficient, further improving the accuracy of infrared temperature detection.

[0080] In another embodiment, when the current change rate of the refrigerator temperature is greater than a preset change rate threshold, the method further includes:

[0081] Confirm that the refrigerator is in a temperature-unstable state, and clear the first NTC temperature, the first infrared temperature, the second NTC temperature, the second infrared temperature, and the infrared temperature correction coefficient obtained when the refrigerator is in a temperature-stable state.

[0082] Specifically, when the current rate of change of the refrigerator temperature is greater than a preset rate of change threshold, the refrigerator exits the temperature stable state and enters the temperature unstable state. At this time, it is necessary to clear the first NTC temperature, first infrared temperature, second NTC temperature, second infrared temperature, and infrared temperature correction coefficient obtained when the refrigerator was in the temperature stable state. When the refrigerator re-enters the temperature stable stage, the first NTC temperature, first infrared temperature, second NTC temperature, and second infrared temperature obtained when the temperature was stable are re-acquired, and a new infrared temperature correction coefficient is recalculated based on the newly acquired data according to the above formula (1). The infrared temperature in the new temperature stable stage is corrected according to the above infrared temperature correction method.

[0083] In some embodiments, the method further includes real-time detection of the corrected infrared temperature of the refrigerator. When the corrected infrared temperature exceeds a first preset threshold value other than the power-on temperature, it is confirmed that the refrigerator is in a temperature unstable state, the first NTC temperature, the first infrared temperature, the second NTC temperature, the second infrared temperature, and the infrared temperature correction coefficient obtained when the refrigerator is in a temperature stable state are cleared, and the infrared temperature correction coefficient of the new temperature stable stage is re-obtained.

[0084] When the refrigerator is in the temperature stabilization stage, the infrared temperature correction coefficient obtained in the current temperature stabilization stage is used to correct the infrared temperature in the next temperature stabilization stage to obtain the corrected infrared temperature. When the corrected infrared temperature of the refrigerator is measured in real time, there may be situations where the infrared temperature suddenly changes due to the detected object deviating from the detection position. For example, if the shelf where the object is stored suddenly collapses, causing the object to change position, the infrared temperature sensor originally detecting the object will detect another object due to the deviation in the object's position, resulting in a sudden temperature change, which may cause the infrared temperature sensor to detect errors. In order to avoid this situation, this embodiment sets a first threshold in advance and combines the first threshold with the start-up temperature of the refrigerator. If the detected infrared temperature value after the sudden change is within the first threshold exceeding the start-up temperature, the infrared temperature of the object detected by the infrared sensor is determined to be normal object temperature, and it is determined that the object has not deviated significantly. If the detected infrared temperature value after the sudden change exceeds the first threshold after the start-up temperature, it is determined that the infrared temperature is abnormal, the object has deviated, and the temperature stabilization stage of the refrigerator has changed and is no longer in the temperature stabilization stage. Since the refrigerator environment has changed, the previously calculated infrared correction coefficient is no longer available. The previously recorded first NTC temperature, first infrared temperature, second NTC temperature, and second infrared temperature are cleared. After the refrigerator returns to the temperature stabilization state, the corresponding first NTC temperature, first infrared temperature, second NTC temperature, and second infrared temperature of the new temperature stabilization stage are obtained, and a new infrared correction coefficient is recalculated according to the above formula (1). The infrared temperature of the next temperature stabilization stage is corrected according to the newly calculated infrared correction coefficient. In this dynamic cycle, the infrared correction coefficient is continuously updated to improve the accuracy of infrared temperature detection.

[0085] In another embodiment, the method further includes detecting the corrected infrared temperature in real time, confirming that the refrigerator is in a temperature unstable state when the corrected infrared temperature is lower than a second preset threshold value below the shutdown temperature, clearing the first NTC temperature, the first infrared temperature, the second NTC temperature, the second infrared temperature and the infrared temperature correction coefficient obtained when the refrigerator is in a temperature stable state; and re-obtaining the infrared temperature correction coefficient of the new temperature stable stage.

[0086] Specifically, when the refrigerator is in the temperature stabilization phase, the infrared temperature correction coefficient obtained during the current temperature stabilization phase is used to correct the infrared temperature for the next temperature stabilization phase to obtain the corrected infrared temperature. When measuring the corrected infrared temperature of the refrigerator in real time, there may be situations where the infrared temperature suddenly changes due to the detected object deviating from the detection position. For example, if the shelf holding the object suddenly collapses, causing the object to change position, the infrared temperature sensor originally detecting the object may detect another object due to the deviation in the object's position, resulting in a sudden temperature change, which may cause the infrared temperature sensor to detect errors. In order to avoid this situation, this embodiment sets a second threshold in advance and combines the second threshold with the shutdown temperature of the refrigerator. If the detected infrared temperature value after the sudden change is within the second threshold below the shutdown temperature, the infrared temperature of the object detected by the infrared sensor is determined to be normal object temperature, and the object is determined to have not deviated significantly. If the detected infrared temperature value after the sudden change is outside the second threshold after the shutdown temperature, the infrared temperature is determined to be abnormal, the object has deviated, and the temperature stabilization stage of the refrigerator has changed and is no longer the temperature stabilization stage. Since the refrigerator environment has changed, the previously calculated infrared correction coefficient is unavailable. The previously recorded first NTC temperature, first infrared temperature, second NTC temperature, second infrared temperature, and infrared temperature correction coefficient are cleared. After the refrigerator returns to the temperature stabilization state, the first NTC temperature, first infrared temperature, second NTC temperature, and second infrared temperature corresponding to the new temperature stabilization stage are obtained, and a new infrared correction coefficient is recalculated according to the above formula (1). The infrared temperature of the next temperature stabilization stage is corrected according to the newly calculated infrared correction coefficient. In this dynamic cycle, the infrared correction coefficient is continuously updated to improve the accuracy of infrared temperature detection.

[0087] In another embodiment, when the refrigerator is in a temperature-stable state, it is determined whether the corrected infrared temperature or the real-time NTC temperature is greater than or equal to the power-on point temperature; if so, the refrigerator's refrigeration unit is started for cooling; otherwise, it is determined whether the corrected infrared temperature or the real-time NTC temperature is less than or equal to the shutdown point temperature; if so, the refrigerator's refrigeration unit is stopped for cooling.

[0088] When the refrigerator reaches a stable temperature, the system determines whether the NTC temperature detected by the refrigerator's NTC sensor is greater than or equal to the refrigerator's refrigeration start-up temperature. If so, the refrigerator's refrigeration unit is activated to cool the refrigerator compartment. The system also determines whether the corrected infrared temperature is greater than or equal to the refrigerator's refrigeration start-up temperature. If so, the refrigerator's refrigeration unit is activated to cool the refrigerator compartment. The NTC temperature sensor monitors the refrigerator compartment temperature in real time. When the detected NTC temperature is less than the start-up temperature, the system then determines whether the NTC temperature is less than or equal to the stop-down temperature. If so, the refrigerator's refrigeration unit is controlled to stop refrigeration. When the corrected infrared temperature is less than the start-up temperature, the system determines whether the corrected infrared temperature is less than or equal to the stop-down temperature. If so, the refrigerator's refrigeration unit is controlled to stop refrigeration.

[0089] In some embodiments, when the current change rate of the refrigerator temperature is less than a preset change rate threshold and the minimum NTC temperature after the refrigeration unit stops refrigeration is not recorded, the method further includes:

[0090] Continue to detect the minimum NTC temperature after the refrigeration unit stops refrigeration.

[0091] Specifically, if it is detected that the current change rate of the refrigerator temperature is less than the preset change rate threshold, but the minimum NTC temperature after the refrigeration unit stops refrigerating has not been detected and recorded, it cannot be determined that the refrigerator has entered a temperature stable state, and the time when the refrigeration unit stops refrigerating, that is, the shutdown time, continues to be detected. After the shutdown time of the refrigeration unit is detected, the change of the NTC temperature continues to be detected. At this time, the detected NTC temperature will continue to decrease until the NTC temperature stops decreasing and starts to rise again, and the minimum NTC temperature after the refrigeration unit stops refrigerating is obtained.

[0092] In another embodiment, when the current change rate of the refrigerator temperature is less than a preset change rate threshold, and the minimum NTC temperature after the refrigeration unit stops refrigeration is recorded, but the maximum NTC temperature after the refrigeration unit starts refrigeration is not recorded, the further comprising:

[0093] Continue to detect the maximum NTC temperature after the refrigeration unit starts cooling.

[0094] Specifically, if it is detected that the current change rate of the refrigerator temperature is less than the preset change rate threshold, the detection records the minimum NTC temperature after the refrigeration unit stops refrigeration, but does not record the maximum NTC temperature after the refrigeration unit starts refrigeration. It is not possible to determine that the refrigerator has entered a temperature stable state, and the refrigeration unit continues to start refrigeration. The refrigeration unit continues to detect the time when the refrigeration unit starts refrigeration, that is, the power-on time. After the power-on time of the refrigeration unit is detected, the change of the NTC temperature continues to be detected. At this time, the detected NTC temperature will continue to rise until the NTC temperature stops rising and starts to fall. The maximum NTC temperature after the refrigeration unit starts refrigeration is obtained.

[0095] This embodiment also provides a refrigerator compartment infrared temperature correction method. Figure 4 FIG. 1 is a flow chart of another refrigerator compartment infrared temperature correction method according to the present embodiment. Figure 4 As shown, the process includes the following steps:

[0096] Step S401, real-time detection of infrared temperature and NTC temperature;

[0097] Step S402, determining whether the current change rate of the refrigerator temperature is less than a preset change rate threshold, if so, executing step S403, otherwise executing step S415;

[0098] Step S403, determining whether the minimum NTC temperature after the refrigeration unit stops refrigeration is recorded, if so, executing step S404, otherwise, returning to executing step S401;

[0099] Specifically, when the NTC temperature of the refrigerator is lower than the shutdown point temperature, the refrigeration unit is controlled to stop refrigeration. During this process, the NTC temperature is detected in real time to determine whether the minimum NTC temperature after the refrigeration unit stops refrigeration is recorded.

[0100] Step S404, determining whether the maximum NTC temperature after the refrigeration unit starts cooling is recorded, if so, executing step S405, otherwise, returning to executing step S401;

[0101] Specifically, when the NTC temperature of the refrigerator reaches the start-up point temperature, the refrigeration unit is started to cool. During this process, the NTC temperature is detected in real time to determine whether the maximum NTC temperature after the refrigeration unit starts cooling is recorded.

[0102] Step S405, confirming that the refrigerator is in a temperature stable state;

[0103] Step S406, obtaining the first NTC temperature T in the current temperature stabilization stage ntc_t1 , first infrared temperature T r_t1 , the second NTC temperature T ntc_t2 and the second infrared temperature T r_t2 ; Among them, the first NTC temperature is the minimum NTC temperature after the refrigeration unit stops refrigeration, and the first infrared temperature is the infrared temperature corresponding to the moment when the first NTC temperature is obtained; the second NTC temperature is the maximum NTC temperature after the refrigeration unit starts refrigeration, and the second infrared temperature is the infrared temperature corresponding to the moment when the second NTC temperature is obtained;

[0104] Step S407, according to the T ntc_t1 、T r_t1 、T ntc_t2 and T r_t2 Calculate the infrared temperature correction coefficient k:

[0105] k=(T ntc_t2 -T ntc_t1 ) / (T r_t2 -T r_t1 );

[0106] Step S408: Correct the infrared temperature T in the next temperature stabilization stage by using the infrared temperature correction coefficient k. r_ti , get the corrected infrared temperature T r_cro_ti :

[0107] T r_cro_ti =T ntc_t1 +k×(T r_ti -T r_t1 );

[0108] Step S409, determining whether the corrected infrared temperature exceeds a first preset threshold other than the power-on temperature, if so, executing step S415, otherwise executing step S410;

[0109] Step S410, determining whether the corrected infrared temperature is lower than a second preset threshold below the shutdown temperature, if so, executing step S415, otherwise executing step S411;

[0110] Step S411, determining whether the corrected infrared temperature or the real-time NTC temperature is greater than or equal to the power-on point temperature, if so, executing step S412, otherwise executing step S413;

[0111] Step S412, starting the refrigeration unit of the refrigerator to perform refrigeration, and returning to step S404;

[0112] Step S413, determining whether the corrected infrared temperature or the real-time NTC temperature is less than or equal to the shutdown point temperature, if so, executing step S414, otherwise executing step S401;

[0113] Step S414: Control the refrigeration unit of the refrigerator to stop refrigeration, and return to step S403;

[0114] Step S415 , confirming that the refrigerator is in a temperature-unstable state, and clearing the first NTC temperature, the first infrared temperature, the second NTC temperature, the second infrared temperature, and the infrared temperature correction coefficient obtained when the refrigerator is in a temperature-stable state.

[0115] Through the above steps S401 to S415, when the refrigerator is in a temperature-stable state, the infrared correction coefficient calculated in the current stable stage is used to correct the infrared temperature in the next temperature-stable stage; if an unstable stage occurs in the middle, the infrared correction coefficient, the stable NTC temperature, and the stable infrared temperature calculated in the temperature-stable state are cleared, the NTC temperature and the infrared temperature after the refrigerator reaches a stable state are re-detected, a new infrared temperature correction coefficient is calculated, and the infrared temperature in the new temperature-stable stage is corrected with the new infrared temperature correction coefficient, thereby solving the problem of inaccurate infrared temperature detection in the refrigerator compartment.

[0116] This embodiment also provides a refrigerator compartment infrared temperature correction device, which is used to implement the above-mentioned embodiments and preferred embodiments. Details already described are omitted for clarity. The terms "module," "unit," "subunit," etc., used below, may refer to a combination of software and / or hardware that implements a predetermined function. While the devices described in the following embodiments are preferably implemented using software, implementation using hardware, or a combination of software and hardware, is also possible and contemplated.

[0117] Figure 5 : is a block diagram of the infrared temperature correction device for the refrigerator compartment of this embodiment. Figure 5 As shown, the device 50 includes: a first judgment module 51, a second judgment module 52, a confirmation module 53, an acquisition module 54, a calculation module 55 and a correction module 56, wherein:

[0118] The first judgment module 51 is configured to determine whether a minimum NTC temperature after the refrigeration unit stops refrigerating is recorded when the current change rate of the refrigerator temperature is less than a preset change rate threshold;

[0119] The second judgment module 52 is configured to determine whether a maximum NTC temperature after the refrigeration unit starts refrigeration is recorded when the current change rate of the refrigerator temperature is less than a preset change rate threshold and the minimum NTC temperature after the refrigeration unit stops refrigeration is recorded;

[0120] A confirmation module 53 is configured to confirm that the refrigerator is in a temperature stable state when the current rate of change of the refrigerator temperature is less than a preset rate of change threshold, and the minimum NTC temperature after the refrigeration unit stops refrigeration is recorded, and the maximum NTC temperature after the refrigeration unit starts refrigeration is recorded;

[0121] An acquisition module 54 is configured to acquire a first NTC temperature, a first infrared temperature, a second NTC temperature, and a second infrared temperature in a current temperature stabilization phase; wherein a temperature stabilization phase is defined as a period from the time of the minimum NTC temperature to the time of the maximum NTC temperature, or a period from the time of the maximum NTC temperature to the time of the minimum NTC temperature; the first NTC temperature is an NTC temperature within a preset first temperature range after the refrigeration unit stops refrigeration, and the first infrared temperature is the infrared temperature corresponding to the moment when the first NTC temperature is acquired; the second NTC temperature is an NTC temperature within a preset second temperature range after the refrigeration unit starts refrigeration, and the second infrared temperature is the infrared temperature corresponding to the moment when the second NTC temperature is acquired;

[0122] The calculation module 55 is used to calculate the difference between the second NTC temperature and the first NTC temperature to obtain the NTC temperature difference; calculate the difference between the second infrared temperature and the first infrared temperature to obtain the infrared temperature difference; calculate the ratio of the NTC temperature difference to the infrared temperature difference to obtain the infrared temperature correction coefficient;

[0123] The correction module 56 is used to correct the infrared temperature of the next temperature stabilization stage by using the infrared temperature correction coefficient to obtain the corrected infrared temperature; wherein the next temperature stabilization stage is a temperature stabilization stage continuous with the current temperature stabilization stage, and the second NTC temperature of the current temperature stabilization stage is used as the first NTC temperature corresponding to the next temperature stabilization stage; the second infrared temperature of the current temperature stabilization stage is used as the first infrared temperature corresponding to the next temperature stabilization stage.

[0124] It should be noted that the above modules can be functional modules or program modules, and can be implemented through software or hardware. For modules implemented through hardware, the above modules can be located in the same processor; or the above modules can be located in different processors in any combination.

[0125] This embodiment further provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0126] Optionally, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor, and the input / output device is connected to the processor.

[0127] In addition, in conjunction with the refrigerator compartment infrared temperature correction method provided in the above embodiments, this embodiment may also provide a storage medium for implementation. The storage medium stores a computer program; when executed by a processor, the computer program implements any of the refrigerator compartment infrared temperature correction methods described in the above embodiments.

[0128] It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit it. Based on the embodiments provided in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0129] Obviously, the accompanying drawings are merely examples or embodiments of the present application. A person skilled in the art can also apply the present application to other similar situations based on these drawings without inventive effort. Furthermore, it is understandable that, although the work involved in this development process may be complex and lengthy, certain design, manufacturing, or production changes based on the technical content disclosed in this application are merely routine technical means for a person skilled in the art and should not be considered to constitute a deficiency in the disclosure of the present application.

[0130] The term "embodiment" as used in this application refers to specific features, structures, or characteristics described in conjunction with the embodiment that can be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily mean that the embodiment is the same, nor does it mean that it is mutually exclusive with other embodiments and is independent or optional. It is understood, either explicitly or implicitly, by those skilled in the art that the embodiments described in this application can be combined with other embodiments when there is no conflict.

[0131] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, database or other media used in the embodiments provided in this application may include at least one of non-volatile and volatile memory. Non-volatile memory may include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory may include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, distributed databases based on blockchains. The processor involved in the various embodiments provided herein may be, but are not limited to, a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic unit, a data processing logic unit based on quantum computing, and the like.

[0132] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of patent protection. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A refrigerator compartment infrared temperature correction method, characterized in that: include: When the current change rate of the refrigerator temperature is less than a preset change rate threshold, it is determined whether the minimum NTC temperature after the refrigeration unit stops refrigeration is recorded; If yes, determine whether the maximum NTC temperature after the refrigeration unit starts cooling is recorded; If so, confirm that the refrigerator is in a temperature stable state; Obtain a first NTC temperature, a first infrared temperature, a second NTC temperature, and a second infrared temperature in a current temperature stabilization stage; wherein, a temperature stabilization stage is defined as a time from the minimum NTC temperature to the maximum NTC temperature, or a temperature stabilization stage is defined as a time from the maximum NTC temperature to the minimum NTC temperature; the first NTC temperature is an NTC temperature within a preset first temperature range after the refrigeration unit stops refrigeration, and the first infrared temperature is an infrared temperature corresponding to the time when the first NTC temperature is obtained; the second NTC temperature is an NTC temperature within a preset second temperature range after the refrigeration unit starts refrigeration, and the second infrared temperature is an infrared temperature corresponding to the time when the second NTC temperature is obtained; Calculating a difference between the second NTC temperature and the first NTC temperature to obtain an NTC temperature difference; calculating a difference between the second infrared temperature and the first infrared temperature to obtain an infrared temperature difference; Calculating the ratio of the NTC temperature difference to the infrared temperature difference to obtain an infrared temperature correction coefficient; The infrared temperature of the next temperature stabilization stage is corrected by the infrared temperature correction coefficient to obtain a corrected infrared temperature; wherein the next temperature stabilization stage is a temperature stabilization stage continuous with the current temperature stabilization stage, and the second NTC temperature of the current temperature stabilization stage is used as the first NTC temperature corresponding to the next temperature stabilization stage; the second infrared temperature of the current temperature stabilization stage is used as the first infrared temperature corresponding to the next temperature stabilization stage.

2. The refrigerator compartment infrared temperature correction method according to claim 1, characterized in that: The first NTC temperature is the minimum NTC temperature after the refrigeration unit stops refrigeration, and the second NTC temperature is the maximum NTC temperature after the refrigeration unit starts refrigeration.

3. The refrigerator compartment infrared temperature correction method according to claim 1, characterized in that: When the current change rate of the refrigerator temperature is greater than a preset change rate threshold, the method further includes: It is confirmed that the refrigerator is in a temperature-unstable state, and the first NTC temperature, the first infrared temperature, the second NTC temperature, the second infrared temperature, and the infrared temperature correction coefficient obtained when the refrigerator is in a temperature-stable state are cleared.

4. The refrigerator compartment infrared temperature correction method according to claim 1, characterized in that: The method further comprises: detecting the corrected infrared temperature of the refrigerator in real time; When the corrected infrared temperature exceeds a first preset threshold value other than the power-on temperature, it is determined that the refrigerator is in a temperature unstable state, and the first NTC temperature, the first infrared temperature, the second NTC temperature, the second infrared temperature, and the infrared temperature correction coefficient obtained when the refrigerator is in a temperature stable state are cleared; Re-obtain the infrared temperature correction coefficient for the new temperature stabilization stage.

5. The refrigerator compartment infrared temperature correction method according to claim 1, characterized in that: The method further comprises: Real-time detection of corrected infrared temperature; When the corrected infrared temperature is lower than a second preset threshold value below the shutdown temperature, it is determined that the refrigerator is in a temperature unstable state, and the first NTC temperature, the first infrared temperature, the second NTC temperature, the second infrared temperature, and the infrared temperature correction coefficient obtained when the refrigerator is in a temperature stable state are cleared; Re-obtain the infrared temperature correction coefficient for the new temperature stabilization stage.

6. The refrigerator compartment infrared temperature correction method according to claim 1, characterized in that: The method further comprises: Determine whether the corrected infrared temperature or real-time NTC temperature is greater than or equal to the power-on point temperature; If so, the refrigeration unit of the refrigerator is started to perform refrigeration.

7. The refrigerator compartment infrared temperature correction method according to claim 1, characterized in that: The method further comprises: Determine whether the corrected infrared temperature or real-time NTC temperature is less than or equal to the shutdown point temperature; If so, the refrigeration unit of the refrigerator is stopped for refrigeration.

8. The refrigerator compartment infrared temperature correction method according to claim 1, characterized in that: When the current change rate of the refrigerator temperature is less than a preset change rate threshold, and the minimum NTC temperature after the refrigeration unit stops refrigerating is not recorded, the method further includes: Continue to detect the minimum NTC temperature after the refrigeration unit stops refrigeration.

9. The refrigerator compartment infrared temperature correction method according to claim 1, characterized in that: When the current change rate of the refrigerator temperature is less than a preset change rate threshold, and the minimum NTC temperature after the refrigeration unit stops refrigeration is recorded, and the maximum NTC temperature after the refrigeration unit starts refrigeration is not recorded, the method further includes: Continue to detect the maximum NTC temperature after the refrigeration unit starts refrigeration.

10. A refrigerator compartment infrared temperature correction device, characterized in that: include: A first judgment module, a second judgment module, a confirmation module, an acquisition module, a calculation module and a correction module, wherein: The first judgment module is configured to determine whether a minimum NTC temperature after the refrigeration unit stops refrigerating is recorded when the current change rate of the refrigerator temperature is less than a preset change rate threshold; The second judgment module is configured to determine whether a maximum NTC temperature after the refrigeration unit starts refrigeration is recorded when the current change rate of the refrigerator temperature is less than a preset change rate threshold and the minimum NTC temperature after the refrigeration unit stops refrigeration is recorded; The confirmation module is configured to confirm that the refrigerator is in a temperature stable state when the current change rate of the refrigerator temperature is less than a preset change rate threshold, and the minimum NTC temperature after the refrigeration unit stops refrigeration is recorded, and the maximum NTC temperature after the refrigeration unit starts refrigeration is recorded; The acquisition module is used to acquire a first NTC temperature, a first infrared temperature, a second NTC temperature, and a second infrared temperature in a current temperature stabilization stage; wherein, a temperature stabilization stage is defined as a period from the time when the minimum NTC temperature is located to the time when the maximum NTC temperature is located, or a temperature stabilization stage is defined as a period from the time when the maximum NTC temperature is located to the time when the minimum NTC temperature is located; the first NTC temperature belongs to an NTC temperature within a preset first temperature range after the refrigeration unit stops refrigeration, and the first infrared temperature is an infrared temperature corresponding to the time when the first NTC temperature is obtained; the second NTC temperature belongs to an NTC temperature within a preset second temperature range after the refrigeration unit starts refrigeration, and the second infrared temperature is an infrared temperature corresponding to the time when the second NTC temperature is obtained; The calculation module is configured to calculate the difference between the second NTC temperature and the first NTC temperature to obtain an NTC temperature difference; calculate the difference between the second infrared temperature and the first infrared temperature to obtain an infrared temperature difference; and calculate the ratio of the NTC temperature difference to the infrared temperature difference to obtain an infrared temperature correction coefficient. The correction module is used to correct the infrared temperature of the next temperature stabilization stage by using the infrared temperature correction coefficient to obtain a corrected infrared temperature; wherein the next temperature stabilization stage is a temperature stabilization stage continuous with the current temperature stabilization stage, and the second NTC temperature of the current temperature stabilization stage is used as the first NTC temperature corresponding to the next temperature stabilization stage; the second infrared temperature of the current temperature stabilization stage is used as the first infrared temperature corresponding to the next temperature stabilization stage.

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