Refrigerator and control method thereof

Abstract

According to the refrigerator and the control method thereof, a radar sensor used for recognizing whether a user exists in front of the refrigerator or not and a pressure detection assembly used for detecting door opening and closing of the refrigerator are arranged in the refrigerator; whether a user exists in front of the refrigerator door or not is detected in combination with a radar sensor, if the user is not detected within a period of time, it is indicated that opening of the refrigerator door is not caused by refrigerator operation of the user and the situation that the user forgets to close the door exists, and then prompt information is sent out to remind the user to close the door. By adopting the embodiment of the invention, whether the opening / closing state of the refrigerator door is caused by a user or not can be detected, and particularly, false alarm conditions caused by some special use scenes can be eliminated, so that the self-monitoring of the refrigerator on the door body is more intelligent, the sealing state of the refrigerator door body can be accurately detected, an alarm can be timely sent to the user, and the user experience is improved. Meanwhile, the user can be timely and accurately reminded to close the refrigerator door, and the experience feeling of the user during product using is improved.

Description

Technical Field

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

[0002] The refrigerator door and the cabinet are sealed mainly by the magnetic force of the door seal and the suction aid. However, due to the uncertainty of the user's use process and the actual use environment, the suction aid and the door seal, especially the door seal, wear and age faster, which will weaken the force between the refrigerator door and the cabinet, thus affecting the sealing of the refrigerator. On the other hand, when the user is using the refrigerator, when the internal drawer is not pushed to the bottom or the food is stored closer to the inside of the refrigerator door, the refrigerator door cannot be fully closed due to internal resistance after closing the refrigerator door, resulting in a virtual closure, which reduces the airtightness of the refrigerator and increases the energy consumption of the refrigerator. At the same time, when the user is using the refrigerator, he may forget to close the refrigerator door due to handling other things, resulting in a large amount of cold leakage in the refrigerator, which will also increase the energy consumption of the refrigerator. Therefore, it is of great significance to detect the sealing condition between the refrigerator door and the cabinet in real time and remind the user to close the refrigerator door in time. Summary of the invention

[0003] The purpose of the embodiments of the present invention is to provide a refrigerator and a control method thereof, which can accurately detect the sealing state of the refrigerator door, can promptly issue an alarm to the user, and can also promptly and accurately remind the user to close the refrigerator door, thereby improving the user's experience when using the product.

[0004] To achieve the above object, an embodiment of the present invention provides a refrigerator, comprising:

[0005] a box body, in which a storage chamber is formed;

[0006] A door, used for opening and closing the storage room;

[0007] A radar sensor is disposed on the top of the box and close to the door, and is used to identify whether a human body exists within its detection range;

[0008] A pressure detection component is disposed in the box body, and when the box door is closed, the pressure detection component is in contact with the box door, and the pressure detection component is used to output a real-time pressure value;

[0009] The controller is configured as:

[0010] Obtaining a real-time pressure value output by the pressure detection component;

[0011] When the real-time pressure value is less than or equal to a preset pressure threshold, obtaining a human body recognition result output by the radar sensor; wherein the human body recognition result includes not recognizing a human body and recognizing a human body;

[0012] If the human body recognition result is that no human body is recognized within a preset fixed time period, a prompt message is issued.

[0013] As an improvement of the above solution, a pressure component installation channel is provided in the box body, and the pressure detection component includes a pressure sensor, a trigger switch and a spring; wherein,

[0014] The pressure sensor is arranged at the bottom of the pressure component installation channel, the trigger switch is arranged at the opening of the pressure component installation channel, the spring is connected to one end of the pressure sensor, one end of the trigger switch is connected to the spring, and the other end of the trigger switch is exposed outside the box;

[0015] When the box door is closed, the trigger switch is in contact with the box door; when the box door is opened, the trigger switch is not in contact with the box door.

[0016] As an improvement of the above solution, the controller is further configured as follows:

[0017] When the real-time pressure value is greater than the pressure threshold, the prompt information is not issued.

[0018] As an improvement of the above solution, the controller is further configured as follows:

[0019] If the human body recognition result is that a human body is recognized within a preset fixed time period, the prompt information is not issued.

[0020] As an improvement of the above solution, the controller is further configured as follows:

[0021] Acquire historical pressure values ​​greater than the pressure threshold value output by the pressure detection component within a preset time period;

[0022] Calculating an average pressure value based on the historical pressure values;

[0023] If the real-time pressure value is greater than the pressure threshold, calculating the pressure difference between the real-time pressure value and the pressure threshold;

[0024] When the pressure difference is greater than a preset pressure difference threshold, an alarm message is issued.

[0025] To achieve the above object, an embodiment of the present invention further provides a refrigerator control method, wherein a radar sensor and a pressure detection component are provided in the refrigerator, wherein the radar sensor is provided at the top of the refrigerator body and is arranged close to the door, and is used to identify whether there is a human body within its detection range; the pressure detection component is provided in the refrigerator body, and when the door is closed, the pressure detection component contacts the door, and the pressure detection component is used to output a real-time pressure value; then, the refrigerator control method comprises:

[0026] Obtaining a real-time pressure value output by the pressure detection component;

[0027] When the real-time pressure value is less than or equal to a preset pressure threshold, obtaining a human body recognition result output by the radar sensor; wherein the human body recognition result includes not recognizing a human body and recognizing a human body;

[0028] If the human body recognition result is that no human body is recognized within a preset fixed time period, a prompt message is issued.

[0029] As an improvement of the above solution, a pressure component installation channel is provided in the box body, and the pressure detection component includes a pressure sensor, a trigger switch and a spring; wherein,

[0030] The pressure sensor is arranged at the bottom of the pressure component installation channel, the trigger switch is arranged at the opening of the pressure component installation channel, the spring is connected to one end of the pressure sensor, one end of the trigger switch is connected to the spring, and the other end of the trigger switch is exposed outside the box;

[0031] When the door is closed, the trigger is in contact with the door; when the door is opened, the trigger is not in contact with the door.

[0032] As an improvement of the above solution, the method further includes:

[0033] When the real-time pressure value is greater than the pressure threshold, the prompt information is not issued.

[0034] As an improvement of the above solution, the method further includes:

[0035] If the human body recognition result is that a human body is recognized within a preset fixed time period, the prompt information is not issued.

[0036] As an improvement of the above solution, the method further includes:

[0037] Acquire historical pressure values ​​greater than the pressure threshold value output by the pressure detection component within a preset time period;

[0038] Calculating an average pressure value based on the historical pressure values;

[0039] If the real-time pressure value is greater than the pressure threshold, calculating the pressure difference between the real-time pressure value and the pressure threshold;

[0040] When the pressure difference is greater than a preset pressure difference threshold, an alarm message is issued.

[0041] Compared with the prior art, the refrigerator and control method thereof disclosed in the present invention are provided with a radar sensor for identifying whether there is a user in front of the refrigerator and a pressure detection component for detecting the opening and closing of the refrigerator door. When the real-time pressure value of the pressure sensor is less than or equal to the pressure threshold, the radar sensor is used to detect whether there is a user in front of the refrigerator door. If the user is not detected for a period of time, it means that the opening of the refrigerator door is not caused by the user operating the refrigerator, and there is a situation where the door is forgotten to be closed. At this time, a prompt message is issued to remind the user to close the door. By adopting the embodiment of the present invention, it is possible to detect whether the opening and closing state of the refrigerator door is caused by the user, especially to exclude the false alarm caused by some special usage scenarios, so that the self-monitoring of the refrigerator door body is more intelligent, and the sealing state of the refrigerator door body can be accurately detected, and an alarm can be issued to the user in time, and the user can also be reminded to close the refrigerator door in time and accurately, thereby improving the user's experience when using the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 is a schematic diagram of the external structure of a refrigerator provided by an embodiment of the present invention;

[0043] Figure 2 is a schematic diagram of the internal structure of a refrigerator provided by an embodiment of the present invention;

[0044] Figure 3 is a schematic structural diagram of a refrigeration system in a refrigerator provided by an embodiment of the present invention;

[0045] Figure 4 is a force analysis diagram of a refrigerator door provided by an embodiment of the present invention;

[0046] Figure 5 is a schematic diagram of the installation position of the radar sensor provided in an embodiment of the present invention;

[0047] Figure 6 is a cross-sectional view of a refrigerator body provided by an embodiment of the present invention;

[0048] Figure 7 is an exploded view of a refrigerator body provided by an embodiment of the present invention;

[0049] Figure 8 is a first working flow diagram of a controller in a refrigerator provided by an embodiment of the present invention;

[0050] Fig. 9 is a second working flow chart of the controller in the refrigerator provided by an embodiment of the present invention;

[0051] Fig.10 It is a flow chart of a refrigerator control method provided by an embodiment of the present invention.

[0052] Among them, 100, refrigerator; 11, cabinet; 12, cabinet door; 13, radar sensor; 141, trigger switch; 142, spring; 143, pressure sensor; 1, compressor; 2, evaporator; 3, capillary; 4, condenser. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0055] The terms "first", "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0056] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0057] See also Figure 1 , Figure 1It is a schematic diagram of the external structure of a refrigerator 100 provided in an embodiment of the present invention. The refrigerator 100 of this embodiment is approximately in the shape of a rectangular parallelepiped. The refrigerator includes a box body that defines a storage space and a plurality of door bodies arranged at the opening of the box body, wherein the door body includes a door body outer shell located on the outside of the box body, a door body liner located on the inside of the box body, an upper end cover, a lower end cover, and an insulating layer located between the door body outer shell, the door body liner, the upper end cover, and the lower end cover; usually, the insulating layer is filled with foam material. The box body is provided with a chamber, wherein the chamber includes a component storage chamber for placing components in the refrigerator, such as a compressor cabin, etc., and also includes a storage space for storing food, etc. See Figure 2 , Figure 2 : is a schematic diagram of the internal structure of a refrigerator provided by an embodiment of the present invention. The storage space can be divided into multiple storage rooms. The storage rooms can be configured as refrigerators and freezers according to different uses. They can also include variable temperature rooms, vacuum drawers, moisturizing drawers, etc. Each storage room corresponds to one or more door bodies, for example, Figure 1 The upper storage room is provided with a double-opening door body. The door body can be pivotally arranged at the opening of the box body, and can also be opened in a drawer-like manner to achieve drawer-like storage. The refrigerator door is provided with a display screen, which is used to display prompt information and receive user touch operations.

[0058] See also Figure 3 , Figure 3 The schematic diagram of the structure of the refrigeration system in the refrigerator provided by the embodiment of the present invention, the refrigeration system includes a compressor 1, an evaporator 2, a drying filter (not shown in the figure), a capillary tube 3, a condenser 4 and a gas-liquid separator (not shown in the figure). The working process of the refrigeration system includes a compression process, a condensation process, a throttling process and an evaporation process. The compression process is: plug in the power cord of the refrigerator, when the contacts of the thermostat are connected, the compressor 1 starts to work, the low-temperature and low-pressure refrigerant is sucked into the compressor 1, and is compressed into a high-temperature and high-pressure superheated gas in the cylinder of the compressor 1 and then discharged to the condenser 4; the condensation process is: the high-temperature and high-pressure refrigerant gas dissipates heat through the condenser 4, the temperature continues to drop, and is gradually cooled to a saturated vapor of normal temperature and high pressure, and is further cooled to a saturated liquid, and the temperature no longer drops. The temperature at this time is called the condensation temperature, and the pressure of the refrigerant remains almost unchanged during the entire condensation process; The flow process is as follows: the saturated liquid refrigerant after condensation is filtered out of moisture and impurities by a drying filter and then flows into the capillary tube 3 through which the refrigerant is throttled and depressurized to become wet steam at room temperature and low pressure; the evaporation process is as follows: the wet steam at room temperature and low pressure begins to absorb heat and vaporize in the evaporator 2, which not only reduces the temperature of the evaporator 2 and its surroundings, but also turns the refrigerant into a low-temperature and low-pressure gas. The refrigerant coming out of the evaporator 2 passes through the gas-liquid separator and then returns to the compressor 1, repeating the above process to transfer the heat in the refrigerator to the air outside the box, thereby achieving the purpose of refrigeration.

[0059] See also Figure 4 , Figure 4 This is a force analysis diagram of the refrigerator door provided by an embodiment of the present invention. For a clearer description, from the side of the refrigerator, an object is placed at any point where the refrigerator door seal contacts the box body, and the force it receives is: the force exerted by the box body 11 on the object, and the force exerted by the box door 12 on the object (the two arrows in the figure respectively indicate the directions of the two forces). When the suction aid and the door seal are relatively intact and the door body is in normal closing, the interaction force between the box door 12 and the box body 11 is large and the sealing is good. Therefore, the force exerted by the box door 12 or the box body 11 on the object is also large. On the contrary, when the sealing between the box body 11 and the box door 12 is reduced, the interaction force between the box door 12 and the box body 11 is weakened, and the force exerted on the object is also weakened. The sealing between the box body 11 and the box door 12 can be determined by measuring the force exerted by the box body 11 or the box door 12 on the object. When the detected force reaches the critical threshold, the refrigerator alarm system sends an alarm to the user. At the same time, the radar sensor is used to determine the user's position to determine whether the refrigerator door is in a normal open and close state to prevent the system from false alarms.

[0060] See also Figure 5 , Figure 5 : is a schematic diagram of the installation position of the radar sensor 13 provided in an embodiment of the present invention. The radar sensor is used to identify the user's position so as to execute the corresponding instructions in different situations. The cost of the radar sensor and the infrared sensor is comparable, but compared with the infrared sensor, the radar sensor has higher sensitivity and detection accuracy, and has stronger anti-interference ability to the external environment. Therefore, it can greatly improve the intelligence level of the refrigerator and can greatly reduce the false alarm caused by different usage scenarios. In an embodiment of the present invention, the detection range of the radar sensor 13 can be set by the user according to his usage habits, or the refrigerator can be set by default before leaving the factory.

[0061] See also Figures 6-7 , Figure 6 is a cross-sectional view of a refrigerator body provided by an embodiment of the present invention, Figure 7: is an exploded view of a refrigerator box provided by an embodiment of the present invention. The pressure detection component is arranged in the box, and when the box door is closed, the pressure detection component is in contact with the box door, and the pressure detection component is used to output a real-time pressure value. Optionally, a pressure component installation channel is provided in the box, and the pressure detection component includes a pressure sensor 143, a trigger switch 141 and a spring 142; wherein, the pressure sensor 143 is arranged at the bottom of the pressure component installation channel, the trigger switch 141 is arranged at the opening of the pressure component installation channel, the spring 142 is connected to one end of the pressure sensor 143, one end of the trigger switch 141 is connected to the spring 142, and the other end of the trigger switch 141 is exposed outside the box 11; when the box door 12 is closed, the trigger switch 141 is in contact with the box door 12; when the box door 12 is opened, the trigger switch 141 is not in contact with the box door 12.

[0062] Exemplarily, the pressure sensor 143 is installed on the foaming layer of the box body 11, the trigger switch 141 passes through the refrigerator box body 11 and is connected to one end of the spring 142, and the other end of the spring 142 is connected to the pressure sensor 143, so that the door 12 and the pressure sensor 143 are connected together. After the refrigerator door is opened, the spring 142 is in a normal state and will not apply a force to the pressure sensor 143. After the refrigerator door is closed, the door 12 contacts the trigger switch 141, applies a force to the trigger switch 141, and drives the trigger switch 141 to compress the spring 142. At this time, the pressure sensor 143 can detect the compression force of the spring 142, which is the force between the door 12 and the box body 11. This method can greatly extend the service life of the pressure sensor 143, and the external environment has almost no effect on the pressure sensor 143, which greatly improves the accuracy of the test. Therefore, the present invention adopts this solution, and the control logic design is performed based on this solution. The position of the trigger switch 141 only needs to meet the requirement of being able to detect the force between the refrigerator and the door body.

[0063] Specifically, the controller in the refrigerator is configured to: obtain the real-time pressure value output by the pressure detection component; when the real-time pressure value is less than or equal to a preset pressure threshold, obtain the human body recognition result output by the radar sensor; wherein the human body recognition result includes no human body recognition and human body recognition; if the human body recognition result is no human body recognition within a preset fixed time period, a prompt message is issued.

[0064] Furthermore, the controller is also configured to: when the real-time pressure value is greater than the pressure threshold, not issue the prompt message; if the human body recognition result is that a human body is recognized within a preset fixed time period, not issue the prompt message.

[0065] For example, see Figure 8, Figure 8 This is a first working flow diagram of a controller in a refrigerator provided by an embodiment of the present invention, wherein the controller is configured to execute steps S11 to S17. The pressure sensor uploads the detected signal to the refrigerator control system, and the system determines whether the refrigerator door is in a normal state by comparing the real-time pressure value and the critical pressure value, so as to issue an alarm to the user in time, wherein the critical value set by the alarm system is slightly higher than the actual critical value, so as to issue an early warning and reserve sufficient time for the user to solve the problem.

[0066] When the refrigerator is in normal working state, it is only necessary to measure the force between the refrigerator door and the box body in real time for monitoring. Due to the application of radar sensors, the present invention can also overcome the problem of false alarms of refrigerators in certain special use environments, making the present invention more practical. First, consider three life scenarios: (1) the refrigerator door is opened normally, (2) the user opens the refrigerator door for a long time but keeps operating in front of the refrigerator, and (3) the user opens the refrigerator door and leaves for a short time. Although the data measured by the pressure sensor is 0 (pressure threshold), the system should not alarm the user at this time. Therefore, in order to improve the accuracy of refrigerator self-detection, we make the following settings: take the distance length L, where L is the horizontal distance from the radar sensor to a certain point, and use this as the critical value when the system alarms. When the refrigerator door is fully opened, measure the horizontal distance L0 from the radar sensor to the farthest point of the refrigerator door, and let L = L0 + Δx, where Δx is the reserved horizontal distance to reduce the error of the radar sensor during detection. This value can be taken within 1 meter according to the actual situation of the refrigerator.

[0067] When the refrigerator door is just opened, the pressure measured by the pressure sensor suddenly drops to 0, but the user is within the L range at this time, and the system determines that the refrigerator is in a normal open state, so no alarm is issued; the user opens the refrigerator door for a long time, but the user has actually been doing some operations in front of the refrigerator, such as tidying up the refrigerator. At this time, the user is within the monitoring range of the radar sensor L, so even if the pressure of the pressure sensor is 0, the system still does not alarm. In life scenarios (1) and life scenarios (2), although the pressure detected by the pressure sensor is 0, since the radar sensor monitors the user within the L range, the false alarm problem can be perfectly solved. Therefore, when the refrigerator door is opened, as long as the radar sensor detects the presence of the user, no alarm will be issued; when the user opens the refrigerator door for a short time and leaves, the radar sensor does not detect the user. At this time, the pressure detected by the pressure sensor is 0. At this time, a fixed time period T is set. Within time T, if the radar sensor does not detect the user, the system determines that the user has not closed the refrigerator door and alarms the user.

[0068] In an embodiment of the present invention, a radar sensor for identifying whether there is a user in front of the refrigerator and a pressure detection component for detecting the opening and closing of the refrigerator door are arranged in the refrigerator. When the real-time pressure value of the pressure sensor is less than or equal to the pressure threshold, the radar sensor is used to detect whether there is a user in front of the refrigerator door. If the user is not detected for a period of time, it means that the opening of the refrigerator door is not caused by the user operating the refrigerator, and the user has forgotten to close the door. At this time, a prompt message is issued to remind the user to close the door. The sealing state of the refrigerator door can be accurately detected, and an alarm can be issued to the user in time. At the same time, the user can be reminded to close the refrigerator door in time and accurately, thereby improving the user's experience when using the product.

[0069] Specifically, the controller is also configured to: obtain historical pressure values ​​greater than the pressure threshold output by the pressure detection component within a preset time period; calculate an average pressure value based on the historical pressure values; if the real-time pressure value is greater than the pressure threshold, calculate the pressure difference between the real-time pressure value and the pressure threshold; when the pressure difference is greater than the preset pressure difference threshold, issue an alarm message.

[0070] For example, see Fig. 9 , Fig. 9 is a second working flow chart of the controller in the refrigerator provided by the embodiment of the present invention. After executing step S11, the controller is also used to execute steps S21 to S26. In the above control method, a method for judging whether there is a user when the refrigerator door is opened is considered. Based on this, considering that the door seal of the refrigerator door is damaged or overused during long-term use, resulting in reduced sealing between the cabinet and the door body, the refrigerator door is closed at this time, and the pressure sensor can detect a certain real-time pressure value, but this real-time pressure value is very small, which may be caused by damage to the door seal or excessive use, resulting in reduced sealing between the cabinet and the door body. At this time, by comparing this real-time pressure value with the average pressure value of the historical pressure value, if the difference is too large, it means that the sealing between the cabinet and the door body is greatly reduced, and it is necessary to remind the user to close the refrigerator door with force, or to remind the user to replace the door seal. It can be understood that this preset time period can be the time period when the user purchases the refrigerator and uses it in the early stage. For example, the historical pressure value of the refrigerator door is detected within one month after the user purchases the refrigerator, and the average pressure value is calculated according to the historical pressure value as the standard value for subsequent comparison and judgment.

[0071] In the embodiment of the present invention, by comparing the real-time pressure values ​​of the refrigerator door and the cabinet with the average pressure value, the sealing effect of the refrigerator door seal can be judged, so that the user can be reminded to take remedial measures in time when the sealing effect of the door seal is poor.

[0072] Compared with the prior art, the refrigerator disclosed in the present invention is provided with a radar sensor for identifying whether there is a user in front of the refrigerator and a pressure detection component for detecting the opening and closing of the refrigerator door. When the real-time pressure value of the pressure sensor is less than or equal to the pressure threshold, the radar sensor is used to detect whether there is a user in front of the refrigerator door. If the user is not detected for a period of time, it means that the opening of the refrigerator door is not caused by the user operating the refrigerator, and there is a situation where the door is forgotten to be closed. At this time, a prompt message is issued to remind the user to close the door. By adopting the embodiment of the present invention, it is possible to detect whether the opening and closing state of the refrigerator door is caused by the user, especially to exclude the false alarm caused by some special usage scenarios, so that the refrigerator can self-monitor the door body more intelligently, accurately detect the sealing state of the refrigerator door body, and promptly send an alarm to the user. At the same time, it can also promptly and accurately remind the user to close the refrigerator door, thereby improving the user's experience when using the product.

[0073] See also Fig.10 , Fig.10 : is a flow chart of a refrigerator control method provided by an embodiment of the present invention, wherein a radar sensor and a pressure detection component are provided in the refrigerator, wherein the radar sensor is provided at the top of the refrigerator body and is provided close to the door, and is used to identify whether a human body exists within its detection range; the pressure detection component is provided in the refrigerator body, and when the door is closed, the pressure detection component contacts the door, and the pressure detection component is used to output a real-time pressure value; then, the refrigerator control method comprises:

[0074] S1. Obtaining the real-time pressure value output by the pressure detection component;

[0075] S2. When the real-time pressure value is less than or equal to a preset pressure threshold, obtaining a human body recognition result output by the radar sensor; wherein the human body recognition result includes a human body not being recognized and a human body being recognized;

[0076] S3. If the human body recognition result is that no human body is recognized within a preset fixed time period, a prompt message is issued.

[0077] Furthermore, the method also includes: when the real-time pressure value is greater than the pressure threshold, the prompt message is not issued; if the human body recognition result is that a human body is recognized within a preset fixed time period, the prompt message is not issued.

[0078] Exemplarily, the pressure sensor uploads the detected signal to the refrigerator control system. The system determines whether the refrigerator door is in a normal state by comparing the real-time pressure value and the critical pressure value, so as to promptly issue an alarm to the user. The critical value set by the alarm system is slightly higher than the actual critical value, so as to provide early warning and reserve sufficient time for the user to solve the problem.

[0079] Specifically, a pressure component installation channel is provided in the box body, and the pressure detection component includes a pressure sensor, a trigger switch and a spring; wherein, the pressure sensor is provided at the bottom of the pressure component installation channel, and the trigger switch is provided at the opening of the pressure component installation channel, the spring is connected to one end of the pressure sensor, one end of the trigger switch is connected to the spring, and the other end of the trigger switch is exposed outside the box body; when the box door is closed, the trigger is in contact with the box door; when the box door is opened, the trigger is not in contact with the box door.

[0080] Specifically, the method also includes: obtaining historical pressure values ​​greater than the pressure threshold output by the pressure detection component within a preset time period; calculating an average pressure value based on the historical pressure values; if the real-time pressure value is greater than the pressure threshold, calculating the pressure difference between the real-time pressure value and the pressure threshold; when the pressure difference is greater than the preset pressure difference threshold, issuing an alarm message.

[0081] Exemplarily, the pressure sensor uploads the detected signal to the refrigerator control system. The system determines whether the refrigerator door is in a normal state by comparing the real-time pressure value and the critical pressure value, so as to promptly issue an alarm to the user. The critical value set by the alarm system is slightly higher than the actual critical value, so as to provide early warning and reserve sufficient time for the user to solve the problem.

[0082] It is worth noting that the specific working process of the refrigerator control method described in the embodiment of the present invention can refer to the working process of the controller in the refrigerator described in the above embodiment, which will not be repeated here.

[0083] Compared with the prior art, the refrigerator control method disclosed in the present invention sets a radar sensor for identifying whether there is a user in front of the refrigerator and a pressure detection component for detecting the opening and closing of the refrigerator door in the refrigerator. When the real-time pressure value of the pressure sensor is less than or equal to the pressure threshold, the radar sensor is used to detect whether there is a user in front of the refrigerator door. If the user is not detected for a period of time, it means that the opening of the refrigerator door is not caused by the user operating the refrigerator, and there is a situation where the door is forgotten to be closed. At this time, a prompt message is issued to remind the user to close the door. By adopting the embodiment of the present invention, it is possible to detect whether the opening and closing state of the refrigerator door is caused by the user, especially to exclude the false alarm caused by some special usage scenarios, so that the refrigerator can more intelligently monitor the door body, accurately detect the sealing state of the refrigerator door body, and promptly send an alarm to the user. At the same time, it can also promptly and accurately remind the user to close the refrigerator door, thereby improving the user's experience when using the product.

[0084] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A refrigerator, characterized in that: include: a box body, in which a storage chamber is formed; A door, used for opening and closing the storage room; A radar sensor is disposed on the top of the box and close to the door, and is used to identify whether a human body exists within its detection range; A pressure detection component is disposed in the box body, and when the box door is closed, the pressure detection component is in contact with the box door, and the pressure detection component is used to output a real-time pressure value; The controller is configured as: Obtaining a real-time pressure value output by the pressure detection component; When the real-time pressure value is less than or equal to a preset pressure threshold, obtaining a human body recognition result output by the radar sensor; wherein the human body recognition result includes not recognizing a human body and recognizing a human body; If the human body recognition result is that no human body is recognized within a preset fixed time period, a prompt message is issued.

2. The refrigerator according to claim 1, characterized in that: The box body is provided with a pressure assembly installation channel, and the pressure detection assembly includes a pressure sensor, a trigger switch and a spring; wherein, The pressure sensor is arranged at the bottom of the pressure component installation channel, the trigger switch is arranged at the opening of the pressure component installation channel, the spring is connected to one end of the pressure sensor, one end of the trigger switch is connected to the spring, and the other end of the trigger switch is exposed outside the box; When the box door is closed, the trigger switch is in contact with the box door; when the box door is opened, the trigger switch is not in contact with the box door.

3. The refrigerator according to claim 1, characterized in that: The controller is also configured to: When the real-time pressure value is greater than the pressure threshold, the prompt information is not issued.

4. The refrigerator according to claim 1, characterized in that: The controller is also configured to: If the human body recognition result is that a human body is recognized within a preset fixed time period, the prompt information is not issued.

5. The refrigerator according to claim 1, characterized in that: The controller is also configured to: Acquire historical pressure values ​​greater than the pressure threshold value output by the pressure detection component within a preset time period; Calculating an average pressure value based on the historical pressure values; If the real-time pressure value is greater than the pressure threshold, calculating the pressure difference between the real-time pressure value and the pressure threshold; When the pressure difference is greater than a preset pressure difference threshold, an alarm message is issued.

6. A refrigerator control method, characterized in that: The refrigerator is provided with a radar sensor and a pressure detection component. The radar sensor is provided at the top of the refrigerator body and is arranged close to the door, and is used to identify whether there is a human body within its detection range; the pressure detection component is provided in the refrigerator body, and when the door is closed, the pressure detection component contacts the door, and the pressure detection component is used to output a real-time pressure value; then, the refrigerator control method includes: Obtaining a real-time pressure value output by the pressure detection component; When the real-time pressure value is less than or equal to a preset pressure threshold, obtaining a human body recognition result output by the radar sensor; wherein the human body recognition result includes not recognizing a human body and recognizing a human body; If the human body recognition result is that no human body is recognized within a preset fixed time period, a prompt message is issued.

7. The refrigerator control method according to claim 6, characterized in that: The box body is provided with a pressure assembly installation channel, and the pressure detection assembly includes a pressure sensor, a trigger switch and a spring; wherein, The pressure sensor is arranged at the bottom of the pressure component installation channel, the trigger switch is arranged at the opening of the pressure component installation channel, the spring is connected to one end of the pressure sensor, one end of the trigger switch is connected to the spring, and the other end of the trigger switch is exposed outside the box; When the door is closed, the trigger is in contact with the door; when the door is opened, the trigger is not in contact with the door.

8. The refrigerator control method according to claim 6, characterized in that: The method further comprises: When the real-time pressure value is greater than the pressure threshold, the prompt information is not issued.

9. The refrigerator control method according to claim 6, characterized in that: The method further comprises: If the human body recognition result is that a human body is recognized within a preset fixed time period, the prompt information is not issued.

10. The refrigerator control method according to claim 6, characterized in that: The method further comprises: Acquire historical pressure values ​​greater than the pressure threshold value output by the pressure detection component within a preset time period; Calculating an average pressure value based on the historical pressure values; If the real-time pressure value is greater than the pressure threshold, the pressure difference between the real-time pressure value and the pressure threshold is calculated; when the pressure difference is greater than a preset pressure difference threshold, an alarm message is issued.

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