Refrigerator chamber infrared temperature correction method

Abstract

The invention relates to a refrigerator chamber infrared temperature correction method which comprises the steps that when the current change rate of the refrigerator temperature is smaller than a preset change rate threshold value, the minimum NTC temperature after a refrigerating unit stops refrigerating and the maximum NTC temperature after the refrigerating unit starts refrigerating are recorded at the same time, the current change rate of the refrigerator temperature is smaller than the preset change rate threshold value, and the current change rate of the refrigerator temperature is not smaller than the preset change rate threshold value; and determining 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 of the current temperature stable stage, calculating to obtain an infrared temperature correction coefficient, and correcting the infrared temperature of the next temperature stable stage through the infrared temperature correction coefficient to obtain the corrected infrared temperature. The problem that infrared temperature detection of the refrigerator chamber is not accurate is solved.

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 in modern people's homes. Therefore, people's technical requirements for the food preservation effect of refrigerators have naturally increased.

[0003] Most of the 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; there are also a small number of refrigerators that use infrared temperature sensors for temperature detection. Since the 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 there is a large error in the infrared temperature without emissivity correction. Therefore, refrigerators currently using infrared temperature sensors on the market generally use the change in infrared temperature for auxiliary judgment of temperature control. Temperature control through infrared temperature changes can speed up the temperature control response speed, but the start and stop points will be offset; or, 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 have lags and differences.

[0004] With regard to the problem of inaccurate infrared temperature detection of refrigerator compartments in the related art, no effective solution has been proposed yet. Summary of the invention

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

[0006] In a first aspect, a refrigerator compartment infrared temperature correction method is provided in this embodiment, comprising:

[0007] When the current change rate of the refrigerator temperature is less than the 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, the first infrared temperature, the second NTC temperature, and the second infrared temperature of the current temperature stabilization stage; wherein, from the moment of the minimum NTC temperature to the moment of the maximum NTC temperature is a temperature stabilization stage, or from the moment of the maximum NTC temperature to the moment of the minimum NTC temperature is a temperature stabilization 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 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;

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

[0012] calculating the 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 refrigeration, and the second NTC temperature is the maximum NTC temperature after the refrigeration unit starts refrigeration.

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

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

[0021] In some of the embodiments, the further step includes: 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 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;

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

[0024] In some of the embodiments, it also includes:

[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 of the embodiments, it also includes:

[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, and the maximum NTC temperature after the refrigeration unit starts refrigeration is not recorded, it also includes:

[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, including: 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] The second judgment module is used to judge whether the 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;

[0037] A confirmation module, used 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;

[0038] An 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 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 belongs to an NTC temperature within a preset first temperature interval 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 belongs to an NTC temperature within a preset second temperature interval 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 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;

[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 the present 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 the 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; the second NTC 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. The C temperature 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 of the refrigerator compartment.

[0042] 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 of this embodiment.

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

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

[0047] Figure 4 Flow chart of another refrigerator compartment infrared temperature correction method according to the present 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 shall have the general meaning understood by people with ordinary skills in the technical field to which this application belongs. The words "one", "a", "a", "the", "these" and the like in this application do not represent 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 directly or indirectly. The "multiple" involved in this application refers to two or more. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, "A and / or B" can mean: A exists alone, A and B exist at the same time, and B exists alone. Usually, the character " / " indicates that the objects associated with each other are in an "or" relationship. The terms "first", "second", "third", etc. involved 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 hardware structure diagram of a 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 in the figure) processor 102 and memory 104 for storing data, wherein 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 can 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 as shown, or with Figure 1 Different configurations shown.

[0052] The memory 104 can be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the refrigerator compartment infrared temperature correction method in this embodiment. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, that is, to implement the above method. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include a memory remotely arranged relative to the processor 102, and these remote memories may be connected to the terminal via a network. Examples of the above network 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 above network includes a wireless network provided by the communication provider of the terminal. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, referred to as NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 106 can be a radio frequency (Radio Frequency, referred to as RF) module, which is used to communicate with the Internet wirelessly.

[0054] In this embodiment, a refrigerator compartment infrared temperature correction method 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 temperature of the refrigerator compartment is detected by an NTC temperature sensor and an infrared sensor. The infrared temperature sensor can detect the temperature change of an object within the field of view, has a fast temperature sensing speed, and can detect the temperature of an object through the air. However, due to the different emissivity of the objects being measured, such as food, food containers, and food packaging, the temperature detected by the infrared temperature sensor is different from the actual temperature, and 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 temperature of the refrigerator compartment 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 : is a temperature change curve diagram of the refrigerator temperature stabilization stage in 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 refrigeration, 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 more accurate in judging 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 Point D in the figure, after the above three conditions are met, it can be judged that the refrigerator enters the temperature stabilization stage. Point B to point D is the first temperature stabilization stage of this embodiment. Similarly, when the refrigerator is in the temperature stabilization stage, the minimum NTC temperature is continuously detected to obtain the NTC temperature at point F. At this time, point D to point F is the next temperature stabilization stage. When the temperature of the refrigerator is in a stable state, the infrared temperature changes rapidly, while the NTC temperature lags behind. At this time, according to the stable corresponding relationship between the two in the stable stage, the infrared temperature is corrected by the correction coefficient in the stable stage to obtain a more accurate infrared temperature.

[0058] Step S202, obtaining the first NTC temperature, the first infrared temperature, the second NTC temperature and the second infrared temperature of the current temperature stabilization stage; wherein, from the moment of the minimum NTC temperature to the moment of the maximum NTC temperature is a temperature stabilization stage, or from the moment of the maximum NTC temperature to the moment of the minimum NTC temperature is a temperature stabilization stage; the first NTC temperature belongs to the NTC temperature in the first temperature interval 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 belongs to the NTC temperature in the second temperature interval 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.

[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 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 at the same time 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 according to 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] Where 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 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.

[0069] Specifically, 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, wherein the temperature interval CD of the second NTC temperature in the BD temperature stabilization stage is used 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 is used 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 the second infrared temperature in the BD temperature stabilization stage can be used to calculate the infrared temperature correction coefficient in 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 refrigeration, 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 with the prior art in which the temperature control is auxiliary judged by using the change amount of infrared temperature, this embodiment calculates the infrared temperature correction coefficient by using the first NTC temperature in the preset first temperature interval, the first infrared temperature, the second NTC temperature in the preset second temperature interval and the second infrared temperature when the refrigerator is in the temperature stabilization stage, and uses the infrared temperature correction coefficient to correct the infrared temperature in the next temperature stabilization stage, wherein the temperature from the shutdown point of the refrigeration unit to the minimum NTC temperature is used as the first preset temperature interval, and the temperature from the startup point of the refrigeration unit to the maximum NTC temperature is used as the second preset temperature interval, so as to obtain the most stable NTC temperature and infrared temperature, and continuously and dynamically correct the infrared temperature, 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 refrigeration, and the second NTC temperature is the maximum NTC temperature after the refrigeration unit starts refrigeration.

[0079] Specifically, when the refrigerator is in the temperature stabilization stage, Figure 3As shown, point A is the refrigerator stop refrigeration point. When the refrigerator compartment temperature reaches the stop refrigeration temperature point, the refrigerator stops refrigeration. At this time, the refrigerator compartment temperature will not rise immediately, but will drop for a period of time with the inertia of the temperature to reach point B. At this time, point B is the optimal time point for NTC temperature acquisition in the temperature stabilization stage. In this embodiment, the NTC temperature at point B corresponding to the minimum NTC temperature detected after the refrigeration unit stops refrigeration is used as the optimal first NTC temperature, and the infrared temperature corresponding to this moment is used as the optimal first infrared temperature. Similarly, point C is the refrigerator start refrigeration point. When the refrigerator compartment temperature reaches the start refrigeration temperature point, the refrigerator starts refrigeration. At this time, the refrigerator compartment temperature will not drop immediately, but will rise for a period of time with the inertia of the temperature to reach point D. At this time, point D is the optimal time point for NTC temperature acquisition in the temperature stabilization stage. In this embodiment, the NTC temperature at point D corresponding to the maximum NTC temperature detected after the refrigeration unit starts refrigeration is used as the optimal second NTC temperature, and the infrared temperature corresponding to this moment is used as the optimal second infrared temperature. Therefore, in this embodiment, the NTC temperature and infrared temperature corresponding to the above moments 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 change rate of the refrigerator temperature is greater than a preset change rate 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, the first infrared temperature, the second NTC temperature, the second infrared temperature and the infrared temperature correction coefficient obtained when the refrigerator is in the temperature stable state. When the refrigerator re-enters the temperature stable stage, the first NTC temperature, the first infrared temperature, the second NTC temperature and the second infrared temperature obtained when the temperature is stable are re-obtained, and the new infrared temperature correction coefficient is recalculated according to the above formula (1) using the re-obtained data, and the infrared temperature of the new temperature stable stage is corrected according to the above infrared temperature correction method.

[0083] In some of the embodiments, it also 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 of the next temperature stabilization stage is corrected by the infrared temperature correction coefficient obtained in the current temperature stabilization stage to obtain the corrected infrared temperature. When the corrected infrared temperature of the refrigerator is detected in real time, there may be a situation where the infrared temperature changes suddenly due to the deviation of the detected object from the detection position. For example, the object shelf suddenly collapses, causing the object position to change. The infrared temperature sensor that originally detected the object detects other objects due to the deviation of the object position, resulting in a sudden change in temperature, thereby causing the infrared temperature sensor to detect errors. In order to avoid this situation, the present embodiment sets a first threshold in advance, combines the first threshold with the start-up temperature of the refrigerator, and 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 the normal object temperature, and it is determined that the object has not deviated greatly. 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 the temperature stabilization stage. Since the refrigerator environment has changed, the infrared correction coefficient calculated previously is not available. The first NTC temperature, the first infrared temperature, the second NTC temperature, and the second infrared temperature recorded previously are cleared. After the refrigerator returns to the temperature stabilization state, the corresponding first NTC temperature, the first infrared temperature, the second NTC temperature, and the second infrared temperature of the new temperature stabilization stage are obtained, and the 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 way, the infrared correction coefficient is continuously updated in a dynamic cycle to improve the accuracy of infrared temperature detection.

[0085] In another embodiment, it also includes real-time detection of the corrected infrared temperature. When the corrected infrared temperature is lower than a second preset threshold below the shutdown temperature, 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; and the infrared temperature correction coefficient of the new temperature stable stage is re-obtained.

[0086] Specifically, when the refrigerator is in the temperature stabilization stage, the infrared temperature of the next temperature stabilization stage is corrected by the infrared temperature correction coefficient obtained in the current temperature stabilization stage to obtain the corrected infrared temperature. When the corrected infrared temperature of the refrigerator is detected in real time, there may be a situation where the infrared temperature changes suddenly due to the deviation of the detected object from the detection position. For example, the object shelf suddenly collapses, causing the object position to change. The infrared temperature sensor that originally detected the object detects other objects due to the deviation of the object position, resulting in a sudden change in temperature, thereby causing the infrared temperature sensor to detect errors. In order to avoid this situation, the present 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 the normal object temperature, and the object is determined to have not deviated greatly. 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 is deviated, and the temperature stabilization stage of the refrigerator changes and is no longer the temperature stabilization stage. Since the refrigerator environment has changed, the previously calculated infrared correction coefficient is unavailable, and 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 the 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 way, the infrared correction coefficient is continuously updated in a dynamic cycle 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 start-up point temperature; if so, the refrigeration unit of the refrigerator is started for refrigeration; otherwise, it is determined whether the corrected infrared temperature or the real-time NTC temperature is less than or equal to the stop point temperature; if so, the refrigeration unit of the refrigerator is stopped for refrigeration.

[0088] When the refrigerator is in a temperature-stable state, determine 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, start the refrigerator's refrigeration unit to refrigerate the refrigerator compartment. Determine whether the corrected infrared temperature is greater than or equal to the refrigerator's refrigeration start-up temperature. If so, start the refrigerator's refrigeration unit to refrigerate the refrigerator compartment. The refrigerator compartment temperature is detected in real time by the NTC temperature sensor. When the detected NTC temperature is less than the start-up temperature, detect whether the NTC temperature is less than or equal to the stop temperature. If so, control the refrigerator's refrigeration unit to stop refrigeration. When the corrected infrared temperature is less than the start-up temperature, determine whether the corrected infrared temperature is less than or equal to the refrigerator's refrigeration stop temperature. If so, control the refrigerator's refrigeration unit 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, it also 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, and the maximum NTC temperature after the refrigeration unit starts refrigeration is not recorded, it also includes:

[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 judge that the refrigerator has entered a temperature stable state, and 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 of this 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 refrigeration 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 for refrigeration. During this process, the NTC temperature is detected in real time to determine whether the maximum NTC temperature after the refrigeration unit starts refrigeration 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 obtained T ntc_t1 、T r_t1 、T ntc_t2 and T r_t2 Calculate the infrared temperature correction factor k:

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

[0106] Step S408, correcting the infrared temperature T in the next temperature stabilization stage by using the infrared temperature correction coefficient k r_ti , and obtain 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 value 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 value 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, controlling the refrigeration unit of the refrigerator to stop refrigeration, and returning 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 of 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 the stable state are re-detected, the new infrared temperature correction coefficient is calculated, and the infrared temperature of 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] In this embodiment, a refrigerator compartment infrared temperature correction device is also provided, which is used to implement the above-mentioned embodiments and preferred implementations, and the descriptions that have been made will not be repeated. The terms "module", "unit", "subunit", etc. used below can implement a combination of software and / or hardware of a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[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 used to judge 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;

[0119] The second judgment module 52 is used to judge whether the maximum NTC temperature after the refrigeration unit starts refrigeration is recorded 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 is recorded;

[0120] A confirmation module 53 is used 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;

[0121] The acquisition module 54 is used to acquire the first NTC temperature, the first infrared temperature, the second NTC temperature and the second infrared temperature in the current temperature stabilization stage; wherein, from the moment of the minimum NTC temperature to the moment of the maximum NTC temperature is a temperature stabilization stage, or from the moment of the maximum NTC temperature to the moment of the minimum NTC temperature is a temperature stabilization 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 acquired; the second NTC temperature 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 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 by software or hardware. For modules implemented by 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] In this embodiment, an electronic device is further provided, including a memory and a processor, wherein a computer program is stored in the memory, 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 combination with the refrigerator compartment infrared temperature correction method provided in the above embodiment, a storage medium can also be provided in this embodiment to implement. The storage medium stores a computer program; when the computer program is executed by the processor, any refrigerator compartment infrared temperature correction method in the above embodiment is implemented.

[0128] It should be understood that the specific embodiments described herein are only used to explain the application, rather than 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 protection scope of this application.

[0129] Obviously, the drawings are only some examples or embodiments of the present application. For ordinary technicians in the field, the present application can also be applied to other similar situations based on these drawings without creative work. In addition, it is understandable that although the work done in this development process may be complicated and lengthy, for ordinary technicians in the field, certain changes in design, manufacturing or production based on the technical content disclosed in this application are only conventional technical means and should not be regarded as insufficient content disclosed in this application.

[0130] The term "embodiment" in this application refers to a specific feature, structure or characteristic described in conjunction with the embodiment that can be included in at least one embodiment of the present application. The appearance of this phrase in various locations in the specification does not necessarily mean the same embodiment, nor does it mean that it is mutually exclusive with other embodiments and is independent or optional. It is clearly or implicitly understood by those of ordinary skill in the art that the embodiments described in this application can be combined with other embodiments without conflict.

[0131] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed 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 the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an 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 each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0132] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of patent protection. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the scope of protection of the present application. Therefore, the scope of protection of the present application shall be subject to the attached 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 the 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 refrigeration is recorded; If yes, it is confirmed 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 stabilization stage; wherein, from the moment of the minimum NTC temperature to the moment of the maximum NTC temperature is a temperature stabilization stage, or from the moment of the maximum NTC temperature to the moment of the minimum NTC temperature is a temperature stabilization 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 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; Calculating the 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 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.

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: 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.

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 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; Re-obtain the infrared temperature correction coefficient for the new temperature stabilization phase.

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 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; Re-obtain the infrared temperature correction coefficient for the new temperature stabilization phase.

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 the real-time NTC temperature is greater than or equal to the power-on point temperature; If yes, 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 the 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 refrigeration 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 used to judge 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; The second judgment module is used to judge whether the 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 used 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 the first NTC temperature, the first infrared temperature, the second NTC temperature and the second infrared temperature of the current temperature stabilization stage; wherein, from the moment of the minimum NTC temperature to the moment of the maximum NTC temperature is a temperature stabilization stage, or from the moment of the maximum NTC temperature to the moment of the minimum NTC temperature is a temperature stabilization 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 acquired; the second NTC temperature 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 acquired; The calculation module 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; 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.

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