Automatic door opening control method of refrigerator and refrigerator

Abstract

The application relates to the field of household appliances, in particular to an automatic door opening control method of a refrigerator and the refrigerator. The method comprises the following steps: when the cabinet door is in a closed state, a pressure sensor senses that a user presses the cabinet door, a first pressing signal and a second pressing signal are input in sequence through a pressing switch assembly, whether a trigger signal is generated is determined based on the first pressing signal and the second pressing signal, and if yes, a door opening instruction is generated based on the trigger signal to control the cabinet door to be opened. According to the application, when the cabinet door is in the closed state, the pressure sensor senses that the user presses the cabinet door, the first pressing signal and the second pressing signal are input in sequence through the pressing switch assembly, and whether the trigger signal is generated is determined based on the first pressing signal and the second pressing signal, so that the accuracy of the automatic door opening control is realized and the false triggering of the refrigerator door opening is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of household appliances, in particular to an automatic door opening control method of a refrigerator and the refrigerator. BACKGROUND

[0002] In the field of refrigerators, with the development of technology, the level of automation is improved, and more and more refrigerators are researched in the direction of improving the intelligent level, among which, automatic door opening is a common function in intelligent control.

[0003] In the prior art, a pressure sensor and a press switch assembly are arranged on the cabinet of the refrigerator, and the user presses the cabinet door to make the press switch assembly press the pressure sensor, so as to trigger the automatic door opening of the refrigerator. However, in actual application, the refrigerator may be collided and thus be triggered by mistake. SUMMARY

[0004] Therefore, it is necessary to provide an automatic door opening control method of a refrigerator and the refrigerator aiming at the above technical problems.

[0005] In a first aspect, an automatic door opening control method of a refrigerator is provided, the refrigerator comprising a cabinet, a cabinet door and a main control board, the cabinet being provided with a pressure sensor, a magnetic sensor and a press switch assembly, the press switch assembly being arranged correspondingly to the pressure sensor, the pressure sensor being configured to sense a press signal input by the press switch assembly, and the magnetic sensor being configured to detect an opening and closing state of the cabinet door, the method comprising:

[0006] When the cabinet door is in a closed state, the pressure sensor senses that a user presses the cabinet door, and a first press signal and a second press signal are input by the press switch assembly in sequence, and based on the first press signal and the second press signal, it is determined whether to generate a trigger signal;

[0007] If yes, the main control board generates an opening instruction based on the trigger signal to control the cabinet door to open.

[0008] In some embodiments, the determination of whether to generate the trigger signal based on the first press signal and the second press signal comprises:

[0009] If the difference between the second press signal and the first press signal is greater than a preset value, the trigger signal is generated, otherwise, the trigger signal is not generated.

[0010] In some embodiments, when the cabinet door is in a closed state, the pressure sensor is stressed by the press switch assembly, and the method further comprises:

[0011] When the door changes from an open state to a closed state, the pressure sensor senses a third press signal and a fourth press signal input sequentially by the press switch assembly, and generates a trigger signal when a difference between the fourth press signal and the third press signal is greater than a preset value;

[0012] The main control board receives the trigger signal and does not generate the door opening instruction.

[0013] In some embodiments, the push switch assembly includes a button and a spring sleeved on the button, wherein the button passes through the box body and is arranged in an interference fit with the box door;

[0014] The preset value is determined based on a compensation displacement value between the button and the door.

[0015] In some embodiments, the compensation displacement value is smaller than the maximum stroke of the button and larger than the upper limit of the error between the box door and the box body.

[0016] In some embodiments, the main control board determines the open / close state of the door based on the magnetic sensitive signal of the magnetic sensor;

[0017] When it is determined based on the magnetic signal that the magnetic sensor is in the closed state, the box door is determined to be in the open state; when it is determined based on the magnetic signal that the magnetic sensor is in the open state, the box door is determined to be in the closed state.

[0018] In a second aspect, an embodiment of the present application provides a refrigerator, comprising a cabinet, a cabinet door, and a main control panel, wherein the cabinet is provided with a pressure sensor, a magnetic sensor, and a push switch assembly, wherein the push switch assembly is provided corresponding to the pressure sensor, the pressure sensor is used to sense a push signal input by the push switch assembly, and the magnetic sensor is used to detect the switch state of the cabinet door; wherein,

[0019] When the door is in a closed state, the pressure sensor senses a user pressing the door, and determines whether to generate a trigger signal based on a first press signal and a second press signal sequentially inputted through the press switch assembly;

[0020] If so, the main control board generates a door opening instruction based on the trigger signal to control the door to open.

[0021] In some embodiments, when the door is from the open state to the closed state, the pressure sensor senses the third and fourth press signals input by the press switch assembly in sequence, and generates a trigger signal when the difference between the fourth press signal and the third press signal is greater than a preset value; the main control board receives the trigger signal and does not generate the door opening instruction.

[0022] In some embodiments, the press switch assembly includes a button and a spring sleeved on the button, and the button penetrates through the cabinet and is in interference with the door.

[0023] The preset value is determined based on the compensation displacement value of the button and the door.

[0024] In some embodiments, the compensation displacement value is less than the maximum stroke of the button and greater than the upper limit error value between the door and the cabinet.

[0025] Compared with the prior art, in the closed state of the door, the pressure sensor senses the user's pressing of the door, and the first and second press signals input by the press switch assembly in sequence, and determines whether to generate a trigger signal based on the first and second press signals. If yes, the main control board generates a door opening instruction based on the trigger signal to control the door to open, thereby avoiding the false triggering of the refrigerator door opening and realizing the accuracy of automatic door opening control. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a refrigerator in an embodiment of the present application;

[0027] Figure 2 It is another structural schematic diagram of a refrigerator in an embodiment of the present application;

[0028] Figure 3 It is a structural schematic diagram of a press switch assembly in an embodiment of the present application;

[0029] Figure 4 It is a flowchart of an automatic door opening control method of a refrigerator in an embodiment of the present application.

[0030] Among them, 100, cabinet; 200, door; 300, pressure sensor; 400, magnetic sensor; 500, press switch assembly; 501, button; 502, spring. DETAILED DESCRIPTION

[0031] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly describes the drawings required for describing the embodiments. Obviously, the drawings described below are merely examples or embodiments of the present invention. Those skilled in the art can apply the present invention to other similar scenarios based on these drawings without inventive effort. Unless otherwise apparent from the context or otherwise noted, the same reference numerals in the figures represent the same structure or operation.

[0032] As used herein and in the claims, unless the context clearly indicates otherwise, the terms "a," "an," "an," and / or "the" are not intended to refer to the singular but may include the plural. Generally speaking, the terms "comprises" and "include" only indicate the inclusion of the steps and elements specifically identified, and these steps and elements do not constitute an exclusive list. A method or apparatus may also include other steps or elements.

[0033] Although the present invention makes various references to certain modules in the system according to an embodiment of the present invention, any number of different modules can be used and run on a computing device and / or processor. The modules are only illustrative, and different aspects of the system and method can use different modules.

[0034] It should be understood that when a unit or module is described as being "connected" or "coupled" to other units, modules, or blocks, it can refer to being directly connected or coupled, or communicating with other units, modules, or blocks, or there can be intervening units, modules, or blocks, unless the context clearly indicates otherwise. As used herein, the term "and / or" may include any and all combinations of one or more of the associated listed items.

[0035] The embodiment of the present application provides a refrigerator such as Figures 1-3 As shown, the refrigerator includes a body 100, a door 200 and a main control board (not shown in the figure). The body 100 is provided with a pressure sensor 300, a magnetic sensor 400 and a push switch assembly 500. The push switch assembly 500 is arranged corresponding to the pressure sensor 300. The pressure sensor 300 is used to sense the press signal input by the push switch assembly 500, and the magnetic sensor 400 is used to detect the switch state of the door 200.

[0036] The refrigerator in the embodiment of the present application can be a single-door refrigerator or a double-door refrigerator. It can be a refrigerator including only a refrigerator compartment or a freezer compartment, or a refrigerator including both a refrigerator compartment and a freezer compartment.

[0037] Wherein, when the box door 200 is in the closed state, the pressure sensor 300 senses that the user presses the box door 200, inputs the first pressing signal and the second pressing signal in sequence through the pressing switch assembly 500, determines whether to generate a trigger signal based on the first pressing signal and the second pressing signal, and if so, the main control board generates an open door instruction to control the box door 200 to open based on the trigger signal.

[0038] When the box door 200 is from the open door state to the closed state, the pressure sensor 300 senses the third pressing signal and the fourth pressing signal input in sequence by the pressing switch assembly 500, generates a trigger signal in the case that the difference between the fourth pressing signal and the third pressing signal is greater than a preset value, and the main control board receives the trigger signal and does not generate the open door instruction.

[0039] In actual assembly, there is a deviation between the box door 200 and the box body 100, if the installed gap is too large, when the user presses the box door 200, the button 501 cannot contact the pressure sensor 300, so that it cannot trigger the door to open; if the installed gap is too small, when the user does not press the box door 200, the button 501 has triggered the pressure sensor 300, so that it triggers the door to open. The above two cases will cause poor user experience.

[0040] In some embodiments, as shown in Figure 3 The pressing switch assembly 500 includes a button 501 and a spring 502 sleeved on the button 501, and the button 501 penetrates through the box body 100 and is provided with an interference with the box door 200.

[0041] Wherein, the preset value is determined based on the compensation displacement value of the button 501 and the box door 200.

[0042] Wherein, the compensation displacement value is less than the maximum stroke of the button 501 and greater than the upper limit value of the error between the box door 200 and the box body 100, so as to avoid the above two cases and improve user experience.

[0043] As shown in Figure 4 The refrigerator automatic door opening control method provided by the embodiment of the application is applied to the above refrigerator, and specifically includes the following steps:

[0044] S402, when the box door is in the closed state, the pressure sensor senses that the user presses the box door, inputs the first pressing signal and the second pressing signal in sequence through the pressing switch assembly, and determines whether to generate a trigger signal based on the first pressing signal and the second pressing signal.

[0045] The first pressing signal and the second pressing signal can be understood as two pressure signals input by the user during one pressing process of the box door 200, and can be the maximum pressure signal and the minimum pressure signal in the pressing process.

[0046] The trigger signal can be a low-level signal, and the pressure sensor 300 outputs a high-level signal in a normal state.

[0047] S404, if yes, the master control board generates an opening door instruction to control the box door to open based on the trigger signal.

[0048] In the above embodiment, whether to generate a trigger signal is determined based on the first pressing signal and the second pressing signal by the pressure sensor 300, and the trigger signal is generated to control the box door 200 to open only when the opening door condition is met, thereby avoiding the false triggering of the box door 200 to open and improving the user experience.

[0049] Specifically, determining whether to generate a trigger signal based on the first pressing signal and the second pressing signal includes:

[0050] If the difference between the second pressing signal and the first pressing signal is greater than a preset value, the trigger signal is generated, otherwise, the trigger signal is not generated.

[0051] It can be understood that in the false triggering case, the pressure sensor 300 receives the first pressing signal and the second pressing signal, but the difference between the second pressing signal and the first pressing signal is small, and the automatic opening door condition is not met, so the box door 200 will not be falsely triggered to open.

[0052] In this embodiment, the automatic opening door condition is set according to the difference between the second pressing signal and the first pressing signal, thereby avoiding the false triggering case.

[0053] Since the pressure sensor 300 is stressed by the pressing switch assembly 500 when the box door 200 is in a closed state, the box door 200 can still be falsely triggered to open.

[0054] In some embodiments, to solve the above technical problem, the automatic opening door condition needs to be further limited. Specifically, when the box door 200 is from an opening door state to a closed state, the pressure sensor 300 senses the third pressing signal and the fourth pressing signal input by the pressing switch assembly 500 in sequence, and generates a trigger signal when the difference between the fourth pressing signal and the third pressing signal is greater than a preset value; the master control board receives the trigger signal and does not generate the opening door instruction.

[0055] When the box door 200 changes from an open state to a closed state, it can be understood that the pressure sensor 300 is pressed for the first time. In this case, even if the main control board receives the trigger signal, it does not generate the door opening instruction. Only when the pressure sensor 300 is pressed for the second time, that is, when it is pressed when it is in the closed state, will it generate the door opening instruction, thereby avoiding the false triggering of the box door 200 to open.

[0056] In order to avoid insensitivity or false triggering of the door 200, in some embodiments, the compensation displacement value a between the button 501 and the door 200 needs to be limited. Figure 3 As shown, assuming that the theoretical distance between the box body 100 and the door 200 is X0, the actual distance is X, the upper limit value of the installation deviation of the door 200 is m, the lower limit value is n, and the maximum stroke of the button 501 is Z.

[0057] When X = X0 + m, during actual assembly, door 200 is away from housing 100. To ensure a trigger signal is generated when door 200 is pressed, a compensation displacement value a is set. Since pressure sensor 300 is subjected to force when door 200 is closed, compensation displacement value a > upper limit m, and therefore compensation displacement value a < maximum travel Z of button 501.

[0058] When X=X0-n, in actual assembly, the door 200 is close to the box body 100. Since the pressure sensor 300 is already subjected to force when the door 200 is closed, there is no need to compensate for the displacement value a.

[0059] In summary, the compensation displacement value a>the upper limit value m, and the compensation displacement value a<the maximum stroke of the button 501 .

[0060] In an exemplary embodiment, the maximum stroke Z of the button 501 is 6.5 mm, the theoretical distance X0 between the box body 100 and the door 200 is 4 mm, the upper limit m is 1 mm, the lower limit n is 1 mm, and the compensation displacement value a is 3 mm, which meets the setting of the compensation displacement value a.

[0061] In some embodiments, the main control board determines the open / close state of the door 200 based on the magnetic signal of the magnetic sensor 400 .

[0062] Specifically, when it is determined based on the magnetic signal that the magnetic sensor 400 is in the closed state, the door 200 is determined to be in the open state; when it is determined based on the magnetic signal that the magnetic sensor 400 is in the open state, the door 200 is determined to be in the closed state.

[0063] The following describes the entire process of automatically opening the refrigerator door, assuming that the initial state of the refrigerator door 200 is the open state.

[0064] When the box door 200 is in the open state, the magnetic sensor 400 cannot detect the box door 200, and the magnetic sensor 400 is in the closed state, and the main control board judges that the magnetic sensor 400 is in the closed state, thereby judging that the box door 200 is in the open state.

[0065] During the process that the box door 200 is from the open state to the closed state, the pressure sensor 300 senses the third pressing signal F3 and the fourth pressing signal F4 inputted in sequence by the pressing switch assembly 500, and generates a trigger signal when the difference between the fourth pressing signal F4 and the third pressing signal F3 is greater than a preset value. The main control board receives the trigger signal at this time, but does not generate an open door instruction.

[0066] After the box door 200 is pressed by the user, the pressure sensor 300 senses that the user presses the box door 200, inputs the first pressing signal and the second pressing signal in sequence through the pressing switch assembly 500, determines to generate a trigger signal based on the first pressing signal and the second pressing signal, and the main control board generates an open door instruction based on the trigger signal to control the box door 200 to open, thereby realizing automatic opening of the box door 200.

[0067] The technical features of the above embodiments can be combined arbitrarily, and to make the description concise, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0068] The above embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it should not be understood as the limitation of the patent scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A method for automatically opening the door of a refrigerator, the refrigerator comprising a refrigerator body, a door, and a main control panel, the refrigerator body being provided with a pressure sensor, a magnetic sensor, and a push switch assembly, the push switch assembly being provided correspondingly to the pressure sensor, the pressure sensor being used to sense a push signal input by the push switch assembly, and the magnetic sensor being used to detect the open / close state of the door, characterized in that: The method comprises: When the door is in a closed state, the pressure sensor senses a user pressing the door, and determines whether to generate a trigger signal based on a first press signal and a second press signal sequentially inputted through the press switch assembly; If yes, the main control board generates a door opening instruction based on the trigger signal to control the door to open; When the door is in a closed state, the pressure sensor is subjected to force from the push switch assembly, and the method further includes: When the door changes from an open state to a closed state, the pressure sensor senses a third press signal and a fourth press signal input sequentially by the press switch assembly, and generates a trigger signal when a difference between the fourth press signal and the third press signal is greater than a preset value; The main control board receives the trigger signal and does not generate the door opening instruction.

2. The method according to claim 1, characterized in that The determining whether to generate a trigger signal based on the first press signal and the second press signal includes: If the difference between the second pressing signal and the first pressing signal is greater than a preset value, the trigger signal is generated; otherwise, the trigger signal is not generated.

3. The method according to claim 1, characterized in that The push switch assembly includes a button and a spring sleeved on the button, wherein the button passes through the box body and is arranged in an interference fit with the box door; The preset value is determined based on a compensation displacement value between the button and the door.

4. The method according to claim 3, characterized in that The compensation displacement value is smaller than the maximum stroke of the button and larger than the upper limit value of the error between the box door and the box body.

5. The method according to claim 1, wherein The main control board determines the open / close state of the door based on the magnetic sensitive signal of the magnetic sensor; When it is determined based on the magnetic signal that the magnetic sensor is in the closed state, the box door is determined to be in the open state; when it is determined based on the magnetic signal that the magnetic sensor is in the open state, the box door is determined to be in the closed state.

6. A refrigerator, characterized in that: It includes a box body, a box door and a main control board. The box body is provided with a pressure sensor, a magnetic sensor and a push switch assembly. The push switch assembly is arranged correspondingly to the pressure sensor. The pressure sensor is used to sense the push signal input by the push switch assembly, and the magnetic sensor is used to detect the switch state of the box door. When the door is in a closed state, the pressure sensor senses a user pressing the door, and determines whether to generate a trigger signal based on a first press signal and a second press signal sequentially inputted through the press switch assembly; If yes, the main control board generates a door opening instruction based on the trigger signal to control the door to open; When the door changes from an open state to a closed state, the pressure sensor senses a third press signal and a fourth press signal input sequentially by the press switch assembly, and generates a trigger signal when a difference between the fourth press signal and the third press signal is greater than a preset value; The main control board receives the trigger signal and does not generate the door opening instruction.

7. The refrigerator according to claim 6, characterized in that The push switch assembly includes a button and a spring sleeved on the button, wherein the button passes through the box body and is arranged in an interference fit with the box door; The preset value is determined based on a compensation displacement value between the button and the door.

8. The refrigerator according to claim 7, characterized in that The compensation displacement value is smaller than the maximum stroke of the button and larger than the upper limit value of the error between the box door and the box body.

Images