A refrigerator control method and a refrigerator

Abstract

The present invention discloses a refrigerator control method, which includes the following steps: sampling the shelf temperature detected by one or more shelf temperature sensors, where the shelf is arranged in the refrigerating chamber, and the shelf temperature sensor is correspondingly arranged with the shelf; determining whether the sampled shelf temperature is higher than the set shelf temperature; if the sampled shelf temperature is higher than the set shelf temperature, calculating the shelf temperature change rate; when the shelf temperature change rate is lower than the set change rate, outputting a warning signal. A refrigerator is also provided. By designing corresponding shelf temperature sensors for the refrigerator shelves to detect the shelf temperature, monitoring the change of the shelf temperature, and paying attention to the shelf temperature change rate in real time, when the temperature reduction rate of a certain shelf is slow, a warning signal is sent to remind the user to manage the food ingredients in time to avoid food ingredient spoilage and waste. The shelf temperature sensor can be calibrated in the use environment, is applicable to low-temperature environments, and can be used stably for a long time.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigerators, and in particular to a refrigerator control method and a refrigerator. Background Art

[0002] Air-cooled refrigerators use air circulation to achieve cooling, keeping the temperature inside the refrigerator lower than the external ambient temperature. Air-cooled refrigerators are more energy-efficient than traditional refrigerators and are an environmentally friendly and energy-saving choice. The proportion of air-cooled refrigerators in commercially available refrigerator products is also gradually increasing. Due to size limitations, "cross-door refrigerators" (i.e., the door body is designed as two doors that open opposite each other) or "French refrigerators" (with two independently opening doors and a spacious refrigerator space, with one or more freezer drawers at the bottom) are usually equipped with multiple air outlets in the refrigerator compartment to meet the cooling needs of larger refrigerator compartments. However, for small-capacity double-door or three-door refrigerators (less than 300L), the refrigerator compartment has only one air outlet. If there are many items or ingredients stored in the refrigerator compartment, especially if there are many items or ingredients stored near the air outlet, the ingredients will block the air outlet and affect the cooling effect of the entire refrigerator compartment.

[0003] In the prior art, weight sensors or image recognition are used to detect whether items are stored improperly. Weight sensors are usually implemented based on pressure sensors or strain sensors. That is, when the object to be measured is applied to the sensor surface, the sensor will be subjected to pressure or strain, thereby generating an electrical signal. This electrical signal can be converted into corresponding weight data after processing. In low-temperature environments, the mechanical properties of the sensor material of the weight sensor are prone to change, such as increased brittleness and poor conductivity. This makes it particularly difficult to use weight sensors in refrigerators. They are very susceptible to damage from external impacts or their accuracy is significantly affected. On the other hand, image recognition requires highly accurate algorithms and complex hardware and software integration, which does not match the product positioning of small-capacity refrigerators. In addition, under different lighting, angles, and different placement of food items, the image recognition system will encounter various recognition obstacles, resulting in the system being unreliable or requiring frequent calibration and adjustment. Summary of the Invention

[0004] The present invention addresses the problem that when detecting whether items are stored improperly by using a weight sensor or image recognition, the mechanical properties of the sensor material of the weight sensor are easily changed, resulting in it being very susceptible to damage from external impact or the accuracy being significantly affected, and image recognition is easily hindered by different light, angles and placement methods. The first aspect of the present invention provides a refrigerator control method.

[0005] In order to achieve the above invention / design purpose, the present invention adopts the following technical solutions:

[0006] A first aspect of the present application provides a refrigerator control method, including the following steps: sampling the shelf temperature detected by one or more shelf temperature sensors, where the shelf is arranged in the refrigerating chamber, and the shelf temperature sensor is arranged corresponding to the shelf; judging whether the sampled shelf temperature is higher than the set shelf temperature; if the sampled shelf temperature is higher than the set shelf temperature, calculating the shelf temperature change rate; when the shelf temperature change rate is lower than the set change rate, outputting a warning signal.

[0007] Further, the refrigerator control method further includes the following steps: sampling the shelf temperature detected by a plurality of shelf temperature sensors, where the shelf is arranged below the air outlet of the refrigerating chamber; judging whether at least one of the sampled shelf temperatures is higher than the set shelf temperature; if at least one of the sampled shelf temperatures is higher than the set shelf temperature, calculating the shelf temperature change rates of the plurality of shelves; judging whether at least one of the shelf temperature change rates is lower than the set change rate.

[0008] If at least one of the shelf temperature change rates is lower than the set change rate, judging whether at least one of the remaining shelf temperature change rates is higher than the set change rate; if at least one of the remaining shelf temperature change rates is higher than the set change rate, outputting an allocation warning signal; if all of the remaining shelf temperature change rates are lower than the set change rate, outputting a fault warning signal.

[0009] Further, before sampling the shelf temperature detected by a plurality of shelf temperature sensors, the following steps are further included: detecting whether the refrigerating chamber door body is in a closed state, and if the refrigerating chamber door body is in a closed state, sampling the shelf temperature detected by one or more shelf temperature sensors.

[0010] Further, the shelf temperature sensor is an infrared temperature sensor, and the shelf temperature sensor is arranged on the side wall of the refrigerating chamber above the shelf.

[0011] Further, the refrigerator control method further includes the following steps: if at least one of the remaining shelf temperature change rates is higher than the set change rate, outputting an allocation warning signal to a communication-connected control terminal; if all of the remaining shelf temperature change rates are lower than the set change rate, outputting a fault warning signal to a communication-connected control terminal and a server.

[0012] A second aspect of the present application provides a refrigerator, in which one or more shelves are arranged in the refrigerating chamber. The refrigerator further includes a detection module configured to sample the shelf temperatures detected by one or more shelf temperature sensors, where the shelf temperature sensors are correspondingly arranged with the shelves; and a warning module configured to determine whether the sampled shelf temperatures are higher than a set shelf temperature, and when the sampled shelf temperatures are higher than the set shelf temperature, detect and calculate the rate of change of the shelf temperatures detected by the shelf temperature sensors, and output a warning signal when the rate of change of the shelf temperatures is lower than a set rate of change.

[0013] Further, the shelf is arranged below the outlet of the refrigerating chamber; the detection module is configured to sample the shelf temperatures detected by a plurality of shelf temperature sensors; the warning module is configured to determine whether at least one of the sampled shelf temperatures is higher than the set shelf temperature; and when at least one of the sampled shelf temperatures is higher than the set shelf temperature, calculate the rates of change of a plurality of shelf temperatures; and when at least one of the rates of change of the shelf temperatures is lower than the set rate of change, determine whether at least one of the remaining rates of change of the shelf temperatures is higher than the set rate of change; if at least one of the remaining rates of change of the shelf temperatures is higher than the set rate of change, output an allocation warning signal; if all of the remaining rates of change of the shelf temperatures are lower than the set rate of change, output a fault warning signal.

[0014] Further, before sampling the shelf temperatures detected by a plurality of shelf temperature sensors, the detection module is further configured to detect whether the refrigerating chamber door is in a closed state, and if the refrigerating chamber door is in a closed state, sample the shelf temperatures detected by one or more shelf temperature sensors.

[0015] Further, the shelf temperature sensor is an infrared temperature sensor, and the shelf temperature sensor is arranged on the side wall of the refrigerating chamber above the shelf.

[0016] Further, the warning module is configured to output an allocation warning signal to a communication-connected control terminal when at least one of the remaining rates of change of the shelf temperatures is higher than the set rate of change; and output a fault warning signal to the control terminal and the server when all of the remaining rates of change of the shelf temperatures are lower than the set rate of change.

[0017] Compared with the prior art, the advantages and positive effects of the present invention are as follows: By designing corresponding shelf temperature sensors for the refrigerator shelves to detect the shelf temperatures and monitoring the changes in the shelf temperatures, and paying attention to the rate of change of the shelf temperatures in real time, when the temperature reduction rate of a certain shelf is slow, a warning signal is sent to remind the user to manage the food materials in time, avoiding food material spoilage and waste. The shelf temperature sensor can be calibrated in the use environment, is suitable for low-temperature environments, and can be used stably for a long time.

[0018] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become clearer. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings required for use in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0020] Figure 1 is a flowchart of an embodiment of the refrigerator control method proposed by the present invention;

[0021] Figure 2 is a flowchart of an embodiment of the refrigerator control method proposed by the present invention;

[0022] Figure 3 is a flowchart of an embodiment of the refrigerator control method proposed by the present invention;

[0023] Figure 4 is a schematic structural diagram of the refrigerator proposed by the present invention;

[0024] Figure 5 is a schematic block diagram of the structure of the refrigerator proposed by the present invention;

[0025] In the figure, 1 is the refrigerator; 11 is the door body of the refrigerating chamber; 12 is the air outlet of the refrigerating chamber; 13 is the first shelf; 14 is the second shelf; 15 is the third shelf; 16 is the temperature sensor of the first shelf; 17 is the temperature sensor of the second shelf; 18 is the temperature sensor of the third shelf; 100 is the detection module; 200 is the warning module; 300 is the control terminal. Specific Embodiments

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0027] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0028] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. In the description of the embodiments, specific features, structures, materials, or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0029] The terms "first", "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second" may explicitly or implicitly include one or more of such features.

[0030] In the description of the present invention, unless otherwise stated, "a plurality of" means two or more.

[0031] When detecting whether there is an unreasonable storage of items by means of a weight sensor or image recognition, the mechanical properties of the sensor material of the weight sensor are likely to change, resulting in being very vulnerable to external impacts and being damaged or the accuracy being significantly affected, while image recognition is prone to problems of recognition obstacles due to different lighting, angles, and placement methods. The present invention designs and provides a refrigerator control method.

[0032] Figure 1 It is a flowchart of an embodiment of the refrigerator control method proposed by the present invention.

[0033] As Figure 1 shown, the refrigerator control method includes multiple steps.

[0034] Step S11: Sample the shelf temperature detected by one or more shelf temperature sensors.

[0035] The shelf is installed in the refrigerating chamber and refers to the horizontal platform inside the refrigerating chamber for placing food and other items. The shelf is usually designed to be adjustable or movable to meet the storage requirements of items with different heights and sizes. The shelf is installed on the armrest or side wall inside the refrigerating chamber. When there are multiple shelves, they can be rearranged according to the user's preference and usage requirements. The shelf can be made of glass, plastic or metal. The shelf can also be designed with height adjustment or folding functions. When the shelf temperature sensor detects the shelf temperature, the shelf is in a horizontal state.

[0036] The shelf temperature sensor is arranged corresponding to the shelf. Preferably, the shelf temperature sensor is arranged on the side wall of the refrigerating chamber above the shelf.

[0037] The shelf temperature sensor is preferably an infrared temperature sensor, that is, it measures the surface temperature of an object by receiving the infrared radiation emitted by the object without directly contacting the object, which can ensure the food storage safety in the refrigerating chamber. In addition to the infrared temperature sensor, the shelf temperature sensor can also be a laser thermometer, an infrared linear array sensor, an infrared thermal imager, etc. The detection range of the shelf temperature sensor covers the entire shelf, that is, it can detect the temperature change of the shelf to the greatest extent. The shelf temperature sensor is designed to output the average temperature of the detection range to reflect the average temperature of the entire shelf, which helps to eliminate the influence of local temperature changes and provide more comprehensive and overall shelf temperature information.

[0038] Exemplarily, the shelf temperature sensor can be installed on one side wall of the refrigerating chamber above the shelf.

[0039] Exemplarily, the shelf temperature sensors can also be symmetrically arranged and installed on both side walls of the refrigerating chamber above the shelf respectively. For example, one shelf temperature sensor is arranged on one side, or two or more shelf temperature sensors are arranged on one side. When multiple shelf temperature sensors are arranged at different positions, the shelf temperature is the average value of the multiple shelf temperature sensors.

[0040] Exemplarily, the shelf temperature sensor can be a temperature sensor array, which can detect the temperatures of multiple points on the shelf plane simultaneously. Using the temperature sensor array can detect local temperature anomalies or hot spots.

[0041] The shelf temperature is also the initial temperature of the infrared temperature sensor.

[0042] Step S12: Determine whether the collected shelf temperature is higher than the set shelf temperature.

[0043] The set shelf temperature is set based on the target temperature of the refrigerating chamber. For example, it can be set to 4°C ± 2°C.

[0044] Step S13: If the collected shelf temperature is higher than the set shelf temperature, calculate the shelf temperature change rate.

[0045] For example, if the collected shelf temperature is higher than the set shelf temperature, it means that the internal environment of the refrigerator has changed (for example, an item has been put in or the placement of the items has changed). At this time, the timer starts timing, and at the end of the set timing period, the shelf temperature detected by the shelf temperature sensor is collected again to calculate the shelf temperature change rate. The first collected shelf temperature is recorded as t n-1 , the shelf temperature collected again is recorded as t n , set the timing period as T d , then the shelf temperature change rate can be recorded as p,

[0046] If the collected shelf temperature is not higher than the set shelf temperature, it means that the internal environment of the refrigerator compartment remains basically unchanged and can meet normal refrigeration needs.

[0047] Step S14: further determining whether the shelf temperature change rate is lower than a set change rate.

[0048] If the temperature change rate of the shelf is lower than the set change rate, it means that the corresponding shelf (and the items placed on it) have not been cooled within the normal time period, and the cooling effect of the refrigerator is affected. A warning signal is further output to prompt the user to reallocate the items in the refrigerator.

[0049] This invention uses shelf temperature sensors designed for refrigerator shelves to detect shelf temperature and monitor temperature changes, keeping track of the shelf temperature change rate in real time. When the temperature of a shelf decreases too slowly, a warning signal is issued, prompting the user to manage ingredients promptly to prevent spoilage and waste. The shelf temperature sensors can be calibrated according to the operating environment, are suitable for low-temperature environments, and offer long-term stability.

[0050] A low shelf temperature change rate could be caused by items being stored blocking the refrigerator compartment's air outlet, reducing airflow efficiency, or excessive storage hindering air flow and circulation. Alternatively, it could be caused by a malfunction within the refrigerator itself. This application can identify this through intelligent means and send real-time warnings to users.

[0051] like Figure 2 As shown, in a preferred embodiment, the refrigerator control method provided by the present invention includes the following steps: Figure 2 Multiple steps shown.

[0052] Step S21: sampling shelf temperatures detected by a plurality of shelf temperature sensors, where the shelves are arranged below the air outlet of the refrigeration chamber.

[0053] Step S22: Determine whether at least one of the collected rack temperatures is higher than the set rack temperature. That is, whether the internal environment of the storage space above at least one rack has changed. The set rack temperature is set based on the target temperature of the refrigerating chamber, for example, it can be set to 4°C ± 2°C.

[0054] Step S23: If at least one of the collected rack temperatures is higher than the set rack temperature, calculate the rack temperature change rate for each rack.

[0055] If all the collected rack temperatures are higher than the set rack temperature, it indicates that the internal environment of the storage space above each rack remains basically unchanged, and the normal refrigeration requirement can be met.

[0056] Step S24: Determine whether at least one of the rack temperature change rates is lower than the set change rate.

[0057] If one of the rack temperature change rates is lower than the set change rate, it indicates that the corresponding rack (and the items placed above it) has not been cooled within the normal time period, and the refrigeration effect of the internal environment above this rack is affected.

[0058] Step S25: Further determine whether at least one of the remaining rack temperature change rates is higher than the set change rate.

[0059] Step S26: If one of the remaining rack temperature change rates is higher than the set change rate, it indicates that only the internal environment above one rack is affected. Output an allocation warning signal to remind the user to rearrange the items on this layer to avoid excessive items blocking the air flow and circulation.

[0060] Step S27: If all the remaining rack temperature change rates are lower than the set change rate, it indicates that the internal environment of the entire refrigerating chamber is affected. Output a fault warning signal to remind the user to check whether the air outlet of the refrigerating chamber is blocked.

[0061] Figure 3 and Figure 4 A specific example of the refrigerator control method provided by the present invention is given. As shown in the figure, there are three racks provided in the refrigerator 1, namely the first rack 13, the second rack 14, and the third rack 15 as shown in Figure 4 shown. A first rack temperature sensor 16 is provided on the side wall of the refrigerating chamber above the first rack 13, a second rack temperature sensor 17 is provided on the side wall of the refrigerating chamber above the second rack 14, and a third rack temperature sensor 18 is provided on the side wall of the refrigerating chamber above the third rack 15. The first rack 13, the second rack 14, and the third rack 15 are arranged in sequence from top to bottom, and the first rack 13 is located below the air outlet 12 of the refrigerating chamber. The refrigerating chamber is correspondingly provided with a refrigerating chamber door body 11.

[0062] AsFigure 4 As shown, the refrigerator control method includes multiple steps as shown in the figure.

[0063] Step S31: First, detect whether the refrigerating chamber door is in the closed state. Whether the refrigerating chamber door is in the closed state can be detected by a Hall sensor.

[0064] Step S321: When the refrigerating chamber door is in the closed state, sample the temperature of the first shelf detected by the first shelf temperature sensor.

[0065] Step S322: At the same time, sample the temperature of the second shelf detected by the second shelf temperature sensor;

[0066] Step S323: At the same time, sample the temperature of the third shelf detected by the third shelf temperature sensor.

[0067] Step S33: Determine whether at least one of them is higher than the set shelf temperature, that is, whether one or more of the first shelf temperature, the second shelf temperature, and the third shelf temperature are higher than the set shelf temperature.

[0068] Step S341: If at least one of them is higher than the set shelf temperature, calculate the temperature change rate of the first shelf.

[0069] Step S342: At the same time, calculate the temperature change rate of the second shelf.

[0070] Step S343: At the same time, calculate the temperature change rate of the third shelf.

[0071] Step S35: Determine whether the temperature change rate of at least one shelf is lower than the set change rate.

[0072] Step S36: Determine whether one of the remaining shelf temperature change rates is higher than the set change rate.

[0073] Step S37: If one of the remaining shelf temperature change rates is higher than the set change rate, output an allocation warning signal, for example, output the allocation warning signal to the control terminal connected by communication, reminding the user that the items on the shelf with a temperature change rate lower than the set change rate need to be rearranged, otherwise it will affect the refrigeration effect.

[0074] Step S38: If all of the remaining shelf temperature change rates are lower than the set change rate, output a fault warning signal to the control terminal and the server connected by communication, reminding the user that the refrigerating chamber air outlet may be blocked, and at the same time record it on the server side. If it is an abnormality caused by a hardware failure, it can provide data support for subsequent maintenance.

[0075] The above control method can be implemented by a controller disposed in the refrigerator. The controller can be a system-on-chip built based on a microcontroller. The microcontroller is the core component of the system-on-chip, which integrates basic components such as a central processing unit, a volatile memory, a non-volatile memory, an input / output interface, and a clock circuit, and can execute various control tasks of the refrigerator. The system-on-chip also includes a power management circuit and a communication module. The communication module provides wireless communication interfaces (such as WiFi, Bluetooth, and LoRa, etc.) and a wired communication interface. The controller is communicatively connected to a control terminal through the communication module. The control terminal includes, but is not limited to, a computer, a smart phone, a tablet computer, a smart assistant, a smart remote control, other smart home appliances, a wearable device, or a vehicle-mounted device, etc.

[0076] The second aspect of the present application provides a refrigerator; as Figure 5 shown, the refrigerator includes a detection module 100 and a warning module 200. The detection module 100 is configured to sample the shelf temperatures detected by one or more shelf temperature sensors. The shelf temperature sensors are correspondingly arranged with the shelves. The warning module 200 is configured to determine whether the sampled shelf temperatures are higher than the set shelf temperatures, and when the sampled shelf temperatures are higher than the set shelf temperatures, detect and calculate the change rate of the shelf temperatures detected by the shelf temperature sensors, and output a warning signal when the change rate of the shelf temperatures is lower than the set change rate.

[0077] In a preferred embodiment of the present application, the shelves are arranged below the outlet of the refrigerating chamber. The detection module 100 is configured to sample the shelf temperatures detected by a plurality of shelf temperature sensors. The warning module 200 is configured to determine whether at least one of the sampled shelf temperatures is higher than the set shelf temperature, and calculate the change rates of a plurality of shelf temperatures when at least one of the sampled shelf temperatures is higher than the set shelf temperature. And when at least one of the change rates of the shelf temperatures is lower than the set change rate, determine whether at least one of the remaining change rates of the shelf temperatures is higher than the set change rate. If at least one of the remaining change rates of the shelf temperatures is higher than the set change rate, output an allocation warning signal. If all of the remaining change rates of the shelf temperatures are lower than the set change rate, output a fault warning signal.

[0078] In a preferred embodiment of the present application, before sampling the shelf temperatures detected by a plurality of shelf temperature sensors, the detection module 100 is further configured to detect whether the refrigerating chamber door is in a closed state. If the refrigerating chamber door is in a closed state, sample the shelf temperatures detected by one or more shelf temperature sensors.

[0079] In a preferred embodiment of the present application, the shelf temperature sensor is an infrared temperature sensor, and the shelf temperature sensor is arranged on the side wall of the refrigerating chamber above the shelf.

[0080] In a preferred embodiment of the present application, the warning module 200 is configured to output an allocation warning signal to the control terminal 300 connected by communication when at least one of the temperature change rates of the remaining shelves is higher than the set change rate; and output a fault warning signal to the control terminal 300 and the server when the temperature change rates of the remaining shelves are all lower than the set change rate.

[0081] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions required to be protected by the present invention.

Claims

1. A refrigerator control method, characterized in that, Including the following steps: Sampling the shelf temperatures detected by multiple shelf temperature sensors, where the shelves are arranged in the refrigerating chamber and are located below the air outlet of the refrigerating chamber, and the shelf temperature sensors are arranged corresponding to the shelves; Judging whether at least one of the sampled shelf temperatures is higher than the set shelf temperature; If at least one of the sampled shelf temperatures is higher than the set shelf temperature, calculating the change rates of multiple shelf temperatures; Judging whether at least one of the shelf temperature change rates is lower than the set change rate; If at least one of the shelf temperature change rates is lower than the set change rate, judging whether at least one of the remaining shelf temperature change rates is higher than the set change rate; If at least one of the remaining shelf temperature change rates is higher than the set change rate, outputting an allocation warning signal; If all of the remaining shelf temperature change rates are lower than the set change rate, outputting a fault warning signal.

2. The refrigerator control method according to claim 1, characterized in that, Before sampling the shelf temperatures detected by multiple shelf temperature sensors, the following steps are further included: Detecting whether the refrigerating chamber door is in a closed state, and if the refrigerating chamber door is in a closed state, sampling the shelf temperatures detected by one or more shelf temperature sensors.

3. The refrigerator control method according to claim 1, characterized in that, The shelf temperature sensor is an infrared temperature sensor, and the shelf temperature sensor is arranged on the side wall of the refrigerating chamber above the shelf.

4. The refrigerator control method according to claim 3, wherein, The following steps are further included: If at least one of the remaining shelf temperature change rates is higher than the set change rate, outputting an allocation warning signal to a communication-connected control terminal; If all of the remaining shelf temperature change rates are lower than the set change rate, outputting a fault warning signal to a communication-connected control terminal and a server.

5. A refrigerator, in which a plurality of shelves are arranged in the refrigerating chamber, and the shelves are located below the air outlet of the refrigerating chamber, characterized in that, It further includes: A detection module configured to sample the shelf temperatures detected by multiple shelf temperature sensors, where the shelf temperature sensors are arranged corresponding to the shelves; and A warning module configured to judge whether at least one of the sampled shelf temperatures is higher than the set shelf temperature; and when at least one of the sampled shelf temperatures is higher than the set shelf temperature, calculating the change rates of multiple shelf temperatures; and when at least one of the shelf temperature change rates is lower than the set change rate, judging whether at least one of the remaining shelf temperature change rates is higher than the set change rate; if at least one of the remaining shelf temperature change rates is higher than the set change rate, outputting an allocation warning signal; if all of the remaining shelf temperature change rates are lower than the set change rate, outputting a fault warning signal.

6. The refrigerator according to claim 5, characterized in that, Before sampling the shelf temperatures detected by multiple shelf temperature sensors, the detection module is further configured to detect whether the refrigerating chamber door is in a closed state, and if the refrigerating chamber door is in a closed state, sampling the shelf temperatures detected by one or more shelf temperature sensors.

7. The refrigerator according to claim 5, characterized in that, The shelf temperature sensor is an infrared temperature sensor, and the shelf temperature sensor is disposed on the side wall of the refrigerating chamber above the shelf.

8. The refrigerator according to claim 7, wherein the warning module is configured to output an allocation warning signal to the communication-connected control terminal when at least one of the remaining shelf temperature change rates is higher than the set change rate; and output a fault warning signal to the control terminal and the server when the remaining shelf temperature change rates are all lower than the set change rate.

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