CN114857819A

CN114857819A - Household appliance and control method thereof

Info

Publication number: CN114857819A
Application number: CN202110155956.9A
Authority: CN
Inventors: 侯迎峰; 洪晶; 马波
Original assignee: BSH Electrical Appliances Jiangsu Co Ltd; BSH Hausgeraete GmbH
Current assignee: BSH Electrical Appliances Jiangsu Co Ltd; BSH Hausgeraete GmbH
Priority date: 2021-02-04
Filing date: 2021-02-04
Publication date: 2022-08-05

Abstract

The embodiment of the invention provides a household appliance and a control method of the household appliance. The household appliance comprises a first component and a second component which can move relatively, a magnetic device, a magnetic detection device and a control device, wherein the magnetic detection device is in communication connection with the control device; the control device is configured to determine a first threshold value according to a first magnetic signal strength detected by the magnetic detection device when the first component and the second component are located at a first relative position, and determine whether the first component and the second component are located at the first relative position using the first threshold value, and a corresponding control method. The household appliance or the control method provided by the embodiment of the invention can accurately and reliably judge the relative position state of the first component and the second component of the household appliance.

Description

Household appliance and control method thereof

Technical Field

The application relates to the technical field of household appliances, in particular to a household appliance and a control method thereof.

Background

The existing part of household appliances has two or more components which can move relatively, and then the household appliances are controlled correspondingly according to the state between the two or more components, which can be realized by mounting a magnetic proximity switch on the household appliances. Existing magnetic proximity switches have been produced with a fixed on or off signal threshold set such that two relatively movable components can only trigger the proximity switch to close or open at a particular distance or within a particular range of distances. The sizes of the household appliances using the proximity switches and the positions of the magnetic proximity switches on the household appliances are different, so that the distances between different parts in different states are different, and the state judgment of the household appliances on the parts is not accurate; the existing magnetic proximity switch improves the universality of the proximity switch by setting a wider threshold range, but the home appliance is misjudged due to the excessively wide threshold range, and then wrong control operation is executed, so that energy waste and product damage are caused. For example, in a refrigerator having the above-described magnetic switch, since the open or closed state of the door and/or the drawer cannot be accurately determined, a control error occurs in the lighting system and the refrigeration system: the door body and/or the drawer are opened, but the illuminating lamp and the like cannot be lighted in time, so that the user experience is poor; the door body and/or the drawer are opened, but the refrigerating system cannot be closed in time, and external humid air enters a circulating air passage of the refrigerator, so that the icing and frosting of the system are aggravated.

Disclosure of Invention

It is an object of embodiments of the present invention to provide an improved household appliance and a control method thereof.

Another object of an embodiment of the present invention is to provide a home appliance and a control method thereof that are advantageous for improving the accuracy of determining a state between relatively movable parts.

One aspect of an embodiment of the present invention relates to a household appliance, comprising a first part and a second part which can move relatively, a magnetic device, a magnetic detection device; one of the magnetic means and the magnetic detection means is located on the first part and the other of the magnetic means and the magnetic detection means is located on the second part; the magnetic device is configured for generating a magnetic signal; the magnetic detection device is configured for detecting magnetic signal strength; the method is characterized in that: the magnetic detection device is in communication connection with the control device; the control device is configured to determine a first threshold value according to a first magnetic signal strength detected by the magnetic detection device when the first and second components are located at the first relative position, and determine whether the first and second components are located at the first relative position using the first threshold value.

In one or more possible implementations, the control device includes a comparison unit configured to compare the magnetic signal strength or the associated value of the magnetic signal strength detected by the magnetic detection device with the first threshold, and the control device determines whether the first component and the second component are located at the first relative position based on a comparison result.

In one or more possible implementations, the first threshold is less than or equal to the first magnetic signal strength or a value associated with the first magnetic signal strength.

In one or more possible implementations, the control device is configured to: when the magnetic signal strength or the correlation value of the magnetic signal strength detected by the magnetic detection device is greater than or equal to the first threshold value, judging that the first component and the second component are located at a first relative position; and/or when the magnetic signal strength or the correlation value of the magnetic signal strength detected by the magnetic detection device is smaller than the first threshold value, judging that the first component and the second component are not located at the first relative position.

In one or more possible implementations, the control device is configured to: determining that the first component and the second component are located at a first relative position based on a change in the magnetic signal strength or the associated value of the magnetic signal strength from being less than the first threshold value to being greater than the first threshold value; and/or judging that the first component and the second component are not located at the first relative position based on the change of the magnetic signal strength or the associated value of the magnetic signal strength from being greater than the first threshold value to being smaller than the first threshold value.

In one or more possible implementations, the control device is configured and adapted to determine a first threshold value according to a first magnetic signal strength detected by the magnetic detection device when the first and second components are located at the first relative position in a preset mode, and to determine whether the first and second components are located at the first relative position using the first threshold value in a use mode.

In one or more possible implementations, the household appliance is a refrigerator, the second component is a door and/or a storage drawer, and the first relative position is a relative position when the door and/or the storage drawer is closed.

In one or more possible implementations, the refrigerator includes a lighting system and/or a refrigeration system; based on the judgment result that the door body and/or the storage drawer are/is positioned at the first relative position, the control device controls the lighting system of the refrigerator to be closed or in a non-opened state, and/or the control device controls at least one part of the refrigeration system of the refrigerator to be opened or in a state of allowing the refrigerator to be opened; based on the judgment result that the door body and/or the storage drawer are not positioned at the first relative position, the control device controls the lighting system to be opened or not to be closed, and/or at least one part of the refrigerator refrigerating system to be closed or not to be opened.

Another aspect of an embodiment of the present invention relates to a household appliance, including a first component, a second component movable relative to the first component, a magnetic device, a magnetic detection device; one of the magnetic means and the magnetic detection means is located on the first part and the other of the magnetic means and the magnetic detection means is located on the second part; the magnetic device is configured for generating a magnetic signal; the magnetic detection device is configured for detecting magnetic signal strength; the second member being movable relative to the first member between a closed position and an open position; determining a first threshold value according to the magnetic signal intensity or the correlation value of the magnetic signal intensity detected by the magnetic detection device when the second component is located at the closing position in a preset stage; when the second component is in the closed position, the magnetic signal strength or the associated value of the magnetic signal strength detected by the magnetic detection device is greater than the first threshold value; the magnetic signal strength or the associated value of the magnetic signal strength detected by the magnetic detection means is less than the first threshold value when the second member is in the open position.

In one or more possible implementations, the household appliance is a refrigerator, the second component is a storage drawer and/or a door, and the refrigerator includes a control device; when the magnetic signal intensity or the associated value of the magnetic signal intensity detected by the magnetic detection device is greater than the first threshold value, the control device controls the lighting system of the refrigerator to be switched off or in a non-on state, and/or at least one part of the refrigeration system of the refrigerator to be switched on or in a state allowing the refrigerator to be switched on.

In one or more possible implementations, when the magnetic signal strength or the associated value of the magnetic signal strength detected by the magnetic detection device is less than the first threshold, the control device controls the lighting system of the refrigerator to be turned on or in a state of not turning off, and/or at least a part of the refrigeration system of the refrigerator to be turned off or in a state of not turning on.

Illustratively, the first component includes the refrigerator body or an addition of the refrigerator body, such as a frame body on the refrigerator body, a cross beam or a slide rail on the refrigerator body, a partition plate and the like which do not move along with the door body or the drawer.

Yet another aspect of an embodiment of the present invention relates to a method for controlling a home appliance, the home appliance including a first member, a second member movable relative to the first member, a magnetic device for generating a magnetic signal, a magnetic detection device for detecting strength of the magnetic signal; one of the magnetic means and the magnetic detection means is located on the first part and the other of the magnetic means and the magnetic detection means is located on the second part; characterized in that the method comprises:

in a preset mode, determining a first threshold value according to the strength of a first magnetic signal detected by the magnetic detection device when the first component and the second component are positioned at the first relative position;

the first threshold may be used in a use mode to determine whether the first component and the second component are in a first relative position.

In one or more possible implementations, in the use mode, the magnetic signal strength or the associated value of the magnetic signal strength detected by the magnetic detection device is compared with the first threshold value, and based on a comparison result, a status command is output.

In one or more possible implementations, the status instructions include a closed status instruction and/or an open status instruction.

In one or more possible implementations, when the magnetic signal strength or the associated value of the magnetic signal strength detected by the magnetic detection device is greater than the first threshold, outputting an off-state instruction; and/or outputting an opening state instruction when the magnetic signal strength detected by the magnetic detection device or the related value of the magnetic signal strength is smaller than the first threshold value.

In one or more possible implementations, when the magnetic signal strength or the associated value of the magnetic signal strength detected by the magnetic detection device changes from being less than the first threshold value to being greater than the first threshold value, outputting an off-state instruction; and/or outputting an opening state instruction when the strength of the magnetic signal detected by the magnetic detection device or the associated value of the strength of the magnetic signal is changed from being greater than the first threshold value to being smaller than the first threshold value.

In one or more possible implementations, the first threshold is less than a first magnetic signal strength or a first magnetic signal strength correlation detected by the magnetic detection device when the first component and the second component are in the first relative position.

In one or more possible implementations, the first threshold includes a first operational threshold and a first release threshold, the first operational threshold being greater than the first release threshold; and outputting a closing state instruction when the magnetic signal strength or the correlation value of the magnetic signal strength is greater than the first release threshold value.

In one or more possible implementations, the first threshold includes a first operational threshold and a first release threshold, the first operational threshold being greater than the first release threshold; and outputting an opening state instruction when the magnetic signal strength or the correlation value of the magnetic signal strength is smaller than the first release threshold value.

In one or more possible implementations, the household appliance includes a memory, a second threshold value is recorded in the memory, and in the preset mode, when the strength of the magnetic signal detected by the magnetic detection device or the associated value of the strength of the magnetic signal obtained from the strength of the magnetic signal is greater than or equal to the second threshold value, it is determined that the first component and the second component are located at the first relative position, and the first threshold value is determined according to the first strength of the magnetic signal detected by the magnetic detection device.

In one or more possible implementations, when the strength of the magnetic signal detected by the magnetic detection device or the associated value of the strength of the magnetic signal obtained from the magnetic signal is smaller than the second threshold, the first threshold is not acquired and/or an alarm instruction is output.

In one or more possible implementations, the second component includes a door and/or a storage drawer, and the first relative position is a relative position when the door and/or the storage drawer is closed.

Compared with the prior art, the household appliance or the control method of the household appliance at least has the following beneficial effects: on one hand, whether the first component and the second component are located at the first relative position or not is judged by taking a first threshold determined by the strength of a first magnetic signal detected by the magnetic detection device when the first component and the second component are located at the first relative position as reference, and the judgment result is accurate and reliable; on the other hand, the household appliance claimed in the present application may first use the first threshold determined by the strength of the first magnetic signal detected by the magnetic detection device after the first component and the second component are assembled and located at the first relative position as a reference, so as to enhance the universality and detection accuracy of the magnetic device and the magnetic detection device.

Drawings

Fig. 1 is an elevation view of a home appliance according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of a home appliance according to an embodiment of the present invention, in which a door is closed.

Fig. 3 is an elevation view of a home appliance according to an embodiment of the present invention, in which a door and a drawer are opened. .

Fig. 4 is a schematic system configuration diagram of a home appliance according to an embodiment of the present invention.

Fig. 5 is a schematic block diagram of a home appliance control method according to an embodiment of the present invention.

100-household appliances; 10-a first component; 20-a second component; 21-a door body; 22-a drawer; 30-a magnetic device; 40-a magnetic detection device; 50-a control device; 51-a comparison unit; 51-a signal conversion unit; 60-a lighting system; 70-refrigeration system.

Detailed Description

The technical solutions of the present application are described clearly and completely by the following specific examples, and it is obvious that the described examples are some, but not all, of the examples of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

A first aspect of embodiments of the present invention provides a domestic appliance 100, as shown in fig. 1-3, the domestic appliance 100 comprising a first part 10 and a second part 20 that are relatively movable.

The household appliance 100 may be a refrigerator, a dishwasher, a washing machine, a steam box, an oven, or the like. The first part 10 and the second part 20 may be two relatively movable parts of these household appliances 100, respectively. For example, the first part 10 may be a cabinet or an addition to a cabinet of a refrigerator, and the second part 20 may be a drawer or a door of a refrigerator; for another example, the first component 10 may be one door or drawer in a multi-door refrigerator, and the second component 20 may be another door, drawer or refrigerator; alternatively, the first member 10 may be a door of a steam box, and the second member 20 may be a box of the steam box, etc.

As an exemplary embodiment, the household appliance 100 shown in fig. 1-3 is a refrigerator.

As an exemplary embodiment, the first member 10 is a case 101 and the second member 20 is a door, a drawer, or a container secured to the door.

The first member 10 and the second member 20 are relatively movable. As shown in fig. 2, the second member 20, which is a door, is in a closed position. As shown in fig. 3, the door is opened such that the second part 20 is opened with respect to the first part 10.

The household appliance 100 comprises a detector to detect the relative position of the first part 10 and the second part 20. The detector comprises magnetic means 30 for generating a magnetic signal and magnetic detection means 40 for detecting the strength of the magnetic signal.

One of the magnetic means 30 and the magnetic detection means 40 is located on the first part 10 and the other of the magnetic means 30 and the magnetic detection means 40 is located on the second part 20. For example, the magnetic device 30 is located on the second component 20 and the magnetic detection device 40 is located on the first component 10.

The magnetic means 30 may for example be permanent magnets or electromagnets.

The magnetic detection device 40 may be, for example, a magnetic flux sensor, and the magnetic signal strength may be characterized by a magnetic flux density.

The household appliance 100 comprises a control device 50, and the magnetic detection device 40 is in communication connection with the control device 50 to receive signals from the magnetic detection device 50. The communication connection may be a wired or wireless connection, such as a wired connection or a connection via bluetooth, WiFi, or the like.

The control means 50 is configured to determine the first threshold value in dependence on a first magnetic signal strength detected by the magnetic detection means 40 when the first component 10 and the second component 20 are in the first relative position. Further, the control device 50 is configured and adapted to determine whether the first component 10 and the second component 20 are in the first relative position using the first threshold value.

The control device 50 may be an MCU (micro control unit), a CPU (central processing unit), a digital signal processing chip, a single chip microcomputer, or an embedded device.

In the embodiment of the present invention, the household appliance 100 determines whether the first component 10 and the second component 20 are located at the first relative position by using a first threshold determined by the strength of the first magnetic signal detected by the magnetic detection device 40 when the first component 10 and the second component 20 are located at the first relative position as a reference, and automatically calibrates the reference threshold according to the installation positions of the magnetic device 30 and the magnetic detection device 40, so that the determination result of the relative position of the first component and the second component is more accurate and reliable.

For example, the second member 20 may reciprocate between a first relative position and a second relative position with respect to the first member 10, and the reciprocating motion may be a reciprocating motion along a straight line, or a reciprocating motion along a curved line, a broken line, or the like. For example, the drawing out and pushing in of the drawer is a reciprocating movement; the opening and closing of the door is also a reciprocating movement. The first threshold value may be determined based on a first magnetic signal strength detected by the magnetic detection device 40 when the first component 10 and the second component 20 are in the first relative position.

The first threshold may be a threshold characterizing the strength of the magnetic signal, and may be directly selected as the first threshold, or may be obtained by performing a certain operation based on the strength of the first magnetic signal, for example, subtracting a certain margin from the strength of the first magnetic signal and/or multiplying/dividing a coefficient to obtain the first threshold.

For example, the first threshold may also be a threshold representing a relevant value of the strength of the magnetic signal, and the control device 50 converts the strength of the magnetic signal to obtain the threshold of the relevant value of the strength of the magnetic signal, for example, the threshold of the relevant value of the strength of the magnetic signal may be an electrical signal converted from the magnetic signal, and the first threshold signal may be an electrical signal converted from the strength of the first magnetic signal, or may be a threshold of the magnetic signal or an electrical signal obtained by performing certain conversion and/or calculation on the electrical signal.

An exemplary first relative position may be that the second component 20 is in an extreme position relative to the first component 10. For example, in the first relative position, the magnetic device and the magnetic detection device are closest together.

In the exemplary embodiment, the second member 20 is in a closed position relative to the first member 10, in a first relative position of the first member 10 and the second member 20, as shown in FIGS. 1 and 2. In the first relative position, the magnetic means 30 and the magnetic detection means 40 are close. As the second member 20 is moved away from the first relative position, as shown in fig. 3, the magnetic signal sensed by the magnetic sensing side device 40 is gradually reduced or even eliminated.

In the exemplary embodiment, the magnetic induction obtained by the magnetic sensing side device 40 is maximized when the first member 10 and the second member 20 are in the first relative position. For example, when the first and

second members

10 and 20 are in a second relative position that is not the first relative position, such as when the second member 20 is opened, the magnetic induction detected by the magnetic detection device 40 is lower than the magnetic induction that it would have detected when the first and

second members

10 and 20 were in the first relative position.

Illustratively, the control device 50 includes a comparison unit 51, the comparison unit 51 is configured to compare the magnetic signal strength or the associated value of the magnetic signal strength detected by the magnetic detection device 40 with a first threshold value, and the control device 50 determines whether the first component 10 and the second component 20 are located at the first relative position based on the comparison result. The specific comparison process may be implemented by a certain logic or program. By comparing the magnetic signal strength or the correlation value of the magnetic signal strength with the first threshold value acquired at the first relative position, whether the magnetic signal strength or the correlation value of the magnetic signal strength is located at the first relative position or not is judged, and the judgment result is high in precision.

For example, the first threshold value may be smaller than the first magnetic signal strength or a value associated with the first magnetic signal strength. For example, the first threshold may be a signal strength or its associated value characterizing a threshold position close to the first relative position, and a margin is reasonably set between the first threshold and the first magnetic signal strength or its associated value, which is beneficial to improve the accuracy and reliability of the detection system. With this, it is expected that the requirement for the accuracy of the magnetic detection device 40 is reduced and the influence of temperature fluctuations on the accuracy of the magnetic detection device 40 is mitigated.

For example, whether the magnetic signal strength or the correlation value of the magnetic signal strength detected by the magnetic detection device 40 is located at the first relative position may be determined according to the magnitude relationship between the first threshold and the magnetic signal strength.

The control means 50 may be arranged to determine that the first part 10 and the second part 20 are in the first relative position when the magnetic signal strength or the associated value of the magnetic signal strength detected by the magnetic detection means 40 is greater than or equal to a first threshold value.

The control device 50 may also be configured to determine that the first part 10 and the second part 20 are not located in the first relative position when the magnetic signal strength or the associated value of the magnetic signal strength detected by the magnetic detection device 40 is less than the first threshold value.

For example, whether or not the magnetic sensor is located at the first relative position may be determined based on a change in magnitude relation between the magnetic signal intensity or the associated value of the magnetic signal intensity detected by the magnetic detection device 40 and the first threshold.

The control device 50 may be configured to determine that the first component 10 and the second component 20 are located in the first relative position based on a change in the magnetic signal strength or the associated value of the magnetic signal strength from being less than the first threshold value to being greater than the first threshold value.

The control device 50 may also be configured to determine that the first component 10 and the second component 20 are not located in the first relative position based on a change in the magnetic signal strength or the associated value of the magnetic signal strength from being greater than the first threshold value to being less than the first threshold value.

For example, the household appliance 100 may be configured to be selectively operated in a preset mode and a use mode. In the preset mode, the control device 50 is configured to determine the first threshold value according to a first magnetic signal strength detected by the magnetic detection device 40 when the first component 10 and the second component 20 are located at the first relative position. With this, the threshold value of the detector can be adaptively calibrated according to the mounting positions of the magnetic detection side device 40 and the magnetic device 30.

In the use mode, the control device 50 is configured to determine whether the first component 10 and the second component 20 are in the first relative position according to a first threshold.

For example, after determining the first threshold value in the preset mode, the first threshold value is saved in the home appliance 100, and the preset mode is completed. The first threshold value may not have to be set again when the user uses the home appliance, i.e., in the normal use mode. Therefore, the household appliance 100 is convenient to use and stable in judgment result.

For example, the preset mode may be operated before the home appliance 100 leaves the factory, for example, the manufacturer enters the preset mode to set the first threshold value during a commissioning phase or a factory testing phase of the home appliance.

For example, the preset mode may be implemented in the home of the user, for example, after-sales service personnel may enter the preset mode in the home of the user through a special command or a key.

Illustratively still further, as shown in fig. 4, the refrigerator includes a lighting system and/or a refrigeration system. Based on the determination result that the door and/or the storage drawer are located at the first relative position, the control device 50 controls the lighting system of the refrigerator to be turned off or not to be turned on, and/or the control device 50 controls at least one part of the refrigeration system of the refrigerator to be turned on or to be in a state of allowing the refrigerator to be turned on.

Based on the determination that the door and/or the storage drawer are not in the first relative position, the lighting system controlled by the control device 50 is turned on or not turned off, and/or at least a portion of the refrigeration system of the refrigerator is turned off or not turned on.

The existing refrigerator is not accurate and reliable enough for judging the opening state of the storage drawer and/or the door body. One possibility is a situation that results in the storage drawer and/or door body having been opened, but the lighting system not being lit; or, the situation that the storage drawer and/or the door body are closed but the lighting system is not out of service is caused, and energy is wasted. Another possibility is that the storage drawer and/or the door body is opened, but the control device cannot accurately judge the opening of the storage drawer and the door body, so that the refrigeration system cannot stop running in time, and the wet air outside the refrigerator enters the storage compartment or the storage drawer and then enters the gas circulation, so that the problems of frosting and icing of the refrigeration system are aggravated. The present embodiments may alleviate or solve at least one of the above-mentioned technical problems.

A second aspect of an embodiment of the invention provides a household appliance 100, the household appliance 100 comprising a first part, a second part 20 movable relative to the first part, a magnetic means 30, a magnetic detection means 40. One of the magnetic means 30 and the magnetic detection means 40 is located on the first part 10 and the other of the magnetic means 30 and the magnetic detection means 40 is located on the second part 20.

The magnetic device 30 is configured for generating a magnetic signal and may be, for example, a permanent magnet or an electromagnet.

The magnetic detection device 40 is configured for detecting the magnetic signal strength and may be, for example, a magnetic flux sensor.

The second member 20 is movable relative to the first member between a closed position and an open position.

Determining a first threshold value according to the magnetic signal strength or the correlation value of the magnetic signal strength detected by the magnetic detection device 40 when the second component 20 is located at the closed position in the preset stage; when the second member 20 is in the closed position, the magnetic signal strength or the associated value of the magnetic signal strength detected by the magnetic detection device 40 is greater than a first threshold value; when the second member 20 is in the open position, the magnetic signal strength or the associated value of the magnetic signal strength detected by the magnetic detection device 40 is less than the first threshold value.

The household appliance 100 determines whether the first component 10 and the second component 20 are located at the first relative position with reference to the first threshold determined when the second component 20 is located at the closed position, and the determination result is accurate and reliable.

Illustratively, the household appliance 100 is a refrigerator, the second component 20 is a storage drawer and/or a door body, the refrigerator comprising a control device 50; when the magnetic signal strength or the associated value of the magnetic signal strength detected by the magnetic detection device 40 is greater than the first threshold value, the control device 50 controls a state in which the lighting system of the refrigerator is turned off or not turned on, and/or a state in which at least a portion of the refrigeration system of the refrigerator is turned on or allowed to be turned on. By adopting the refrigerator with the scheme, whether the door body and/or the storage drawer are closed or not can be accurately and reliably judged, meanwhile, the control over the refrigerator lighting and/or refrigerating system can be realized, and the problems that the user experience is poor and the refrigerator is easy to frost and freeze due to inaccurate and unreliable judgment on the state of the door body or the drawer on the existing refrigerator are solved.

Illustratively, when the magnetic signal strength or the associated value of the magnetic signal strength detected by the magnetic detection device 40 is less than the first threshold, the control device 50 controls a state in which the lighting system of the refrigerator is turned on or not turned off, and/or a state in which at least a portion of the refrigeration system of the refrigerator is turned off or not turned on. By adopting the refrigerator with the scheme, whether the door body and/or the storage drawer are closed or not can be accurately and reliably judged, meanwhile, the control over the refrigerator lighting and/or refrigerating system can be realized, and the problems that the user experience is poor and the refrigerator is easy to frost and freeze due to inaccurate and unreliable judgment on the state of the door body or the drawer on the existing refrigerator are solved.

The embodiment of the invention provides a control method of a household appliance 100. The household appliance 100 comprises a first part 10 and a second part 20 which can move relatively, a magnetic device 30 and a magnetic detection device 40.

One of the magnetic device 30 and the magnetic detection device 40 is located on the first member 10, and the other of the magnetic device 30 and the magnetic detection device 40 is located on the second member 20.

The magnetic device 30 is configured for generating a magnetic signal, and may be, for example, a permanent magnet or an electromagnet; the magnetic detection means 40 is configured for detecting the magnetic signal strength and may be, for example, a magnetic flux sensor.

Referring to fig. 5, the control method according to the embodiment of the present invention includes determining a first threshold value according to a first magnetic signal strength detected by the magnetic detection device 40 when the first unit 10 and the second unit 20 are located at the first relative position in at least one preset mode.

A first threshold may be used in a use mode to determine whether the first component 10 and the second component 20 are in a first relative position.

For example, the preset mode may be operated before the home appliance 100 is shipped, for example, in a commissioning phase or a shipping detection phase. The preset mode may also be implemented in the user's home.

And with reference to a first threshold determined by the strength of the first magnetic signal detected by the magnetic detection device 40 when the first component 10 and the second component 20 are located at the first relative position, judging whether the first component 10 and the second component 20 are located at the first relative position, wherein the judgment result is accurate and reliable. Meanwhile, the first threshold value can be determined in the primary preset mode, and the subsequent use mode is not set again, so that the household appliance 100 is convenient to use, and the judgment result is stable.

In the use mode, the magnetic signal strength detected by the magnetic detection device 40 or the associated value of the magnetic signal strength is compared with a first threshold value, for example. Based on the comparison result, the state instruction is output, the judgment logic is simple, and the judgment result is accurate and reliable.

Illustratively, the state instruction comprises a closing state instruction and/or an opening state instruction, and the closing state instruction and/or the opening state instruction can be generated according to the detection result of the strength of the magnetic signal, so that the state of the second component can be accurately judged.

Illustratively, the off-state instruction is output when the magnetic signal strength detected by the magnetic detection device 40 or the associated value of the magnetic signal strength is greater than a first threshold value. When the magnetic signal intensity detected by the magnetic detection device 40 or the associated value of the magnetic signal intensity is smaller than the first threshold value, an on-state instruction is output.

The sensitivity of the magnetic detection device fluctuates to a certain extent under the influence of the ambient temperature and the self precision, and particularly when the sensitivity is close to the first threshold, the detected magnetic signal intensity or the correlation value of the magnetic signal intensity may be suddenly larger than the first threshold and suddenly smaller than the first threshold, so that the precision of the judgment result is influenced to a certain extent. For example, the off-state instruction may be output when the magnetic signal strength detected by the magnetic detection device 40 or the associated value of the magnetic signal strength changes from being less than the first threshold value to being greater than the first threshold value.

When the magnetic signal intensity detected by the magnetic detection device 40 or the associated value of the magnetic signal intensity changes from being greater than the first threshold value to being smaller than the first threshold value, the on-state instruction is output. Therefore, the requirement on the precision of the magnetic detection device 40 can be reduced, the influence of temperature fluctuation on the precision of the magnetic detection device 40 can be relieved, and the judgment result is more reliable. Illustratively, the first threshold value is smaller than a magnetic signal intensity value detected by the magnetic detection device 40 or an electric signal value converted from the magnetic signal intensity when the first component 10 and the second component 20 are in the first relative position.

Illustratively, the first threshold comprises a first operational threshold and a first release threshold, the first operational threshold being greater than the first release threshold; and outputting a closing state instruction when the magnetic signal strength or the related value of the magnetic signal strength is greater than a first release threshold value. And in the process of changing from the opening state to the closing state, outputting an opening and closing instruction only when the measured value is greater than the first operation threshold value. Therefore, the limitation of the accuracy of the magnetic detection device 40 and the influence of the sensitivity of the temperature magnetic detection device 40 can be reduced, the stability near the critical point is increased, and the technical problem of instability caused by the fluctuation of the value detected by the magnetic detection device 40 near the critical point is solved.

Illustratively, the first threshold includes a first operational threshold and a first release threshold, the first operational threshold being greater than the first release threshold; and outputting an opening state instruction when the magnetic signal strength or the related value of the magnetic signal strength is smaller than a first release threshold value. In such a household appliance, the on state command is output only when the measured value is smaller than the first release threshold value in the process of changing from the off state to the on state. Therefore, the limitation of the precision of the magnetic detection device 40 and the influence of the sensitivity of the temperature magnetic detection device 40 can be reduced, the stability and the accuracy near the critical point are improved, and the technical problem of instability caused by the fluctuation of the value detected by the magnetic detection device 40 near the critical point is solved.

Exemplarily, the household appliance 100 comprises a memory in which the second threshold value is recorded. In the preset mode, when the strength of the magnetic signal detected by the magnetic detection device 40 or the associated value of the strength of the magnetic signal derived from the magnetic signal is greater than or equal to the second threshold value, it is confirmed that the first part 10 and the second part 20 are located at the first relative position, and the first threshold value is determined according to the first strength of the magnetic signal detected by the magnetic detection device 40. That is, the first component 10 and the second component 20 are considered to be in the first relative position only if they are greater than or equal to the second threshold. With this arrangement, it is possible to prevent the operator from mistakenly determining the reference value according to the strength of the collected magnetic signal for the first relative position when the first component 10 and the second component 20 are not located at the first relative position, so that the household appliance 100 erroneously determines the position state of the first component 10 and the second component 20 in the use mode.

Illustratively, the memory includes, but is not limited to, disk memory, CD-ROM, optical memory, and the like.

Illustratively, when the strength of the magnetic signal detected by the magnetic detection device 40 or the associated value of the strength of the magnetic signal derived from the magnetic signal is less than the second threshold, the first threshold is not acquired and/or the alarm command is output. If the preset first threshold value fails, the reference value is not selected so as to prevent misjudgment in the subsequent use; preferably, if the first threshold value fails to be preset, an alarm message is sent to prompt the operator to confirm whether the first component 10 and the second component 20 are in the first relative position.

Illustratively, the second component 20 includes a door and/or a storage drawer, and the first relative position is a relative position when the door and/or storage drawer is closed.

Exemplarily, the household appliance is a refrigerator. The refrigerator comprises a door and/or a drawer and a box body. The first part is a box body, and the door body and/or the storage drawer is a second part. Based on the state command, the refrigerator executes corresponding operation. Further, the refrigerator comprises a lighting system and/or a refrigerating system, and the lighting system is instructed to be turned on or in a non-turn-off state and/or at least one part of the refrigerating system is turned off or in a non-turn-on state based on the turn-on state; and/or, based on the off state, instruct the lighting system to be off or in a non-on state and/or at least a portion of the refrigeration system to be on or in a state to allow for turning on. The existing refrigerator is not accurate and reliable enough for judging the opening state of the storage drawer and/or the door body. One possibility is a situation that results in the storage drawer and/or door body having been opened, but the lighting system not being lit; or, the situation that the storage drawer and/or the door body are closed but the lighting system is not out of service is caused, and energy is wasted. Another possibility is that the storage drawer and/or the door body is opened, but the control device cannot accurately judge that the refrigeration system cannot stop running in time, and wet air outside the refrigerator enters the storage compartment or the storage drawer and then enters the gas circulation, so that the problems of frosting and icing of the refrigeration system are aggravated. The present embodiments may alleviate or solve at least one of the above-mentioned technical problems.

Exemplarily, the above-mentioned on condition of the lighting system refers to an action of changing from an off state to an on state; being in an off state means that the lighting system is already on, but not off; the closing means an action of changing from an open state to a closed state; being in the off state means that the lighting system has been off, but not on.

For example, the closing of the refrigeration system refers to an action of changing from an open state to a closed state; being in a non-open state means already being in a closed state, but not being open; open means an operation of changing from an off state to an on state; the state of opening permission refers to that all or part of conditions for opening the refrigeration system are met, and the refrigeration system can be opened directly or opened after meeting other conditions.

For example, the refrigeration system of the existing refrigerator is composed of a plurality of components, and the control of the refrigeration system can be realized by controlling the opening or closing of all or at least part of the components. For example, based on an on status command, a fan of the refrigeration system is turned off or not turned on; based on the off status command, the fan of the refrigeration system is turned on or allowed to turn on. Therefore, even if the door body or the storage drawer is in an open state, the problem of freezing or frosting of the refrigerating system can be relieved to a certain extent because the fan is not operated and the amount of wet air entering the circulating air duct is small. Other components can be controlled by one skilled in the art to achieve the same or similar technical effects, which also falls within the scope of the disclosure of the embodiments of the present application.

Although specific embodiments have been described above, these embodiments are not intended to limit the scope of the disclosure, even if only a single embodiment is described with respect to a particular feature. The characteristic examples provided in the present disclosure are intended to be illustrative, not limiting, unless differently stated. In particular implementations, the features of one or more dependent claims may be combined with those of the independent claims as technically feasible according to the actual requirements, and the features from the respective independent claims may be combined in any appropriate manner and not merely by the specific combinations enumerated in the claims.

The various embodiments described above and shown in the accompanying drawings are illustrative of the present application and are not intended to be exhaustive of the application. Any modification of the present application made by a person of ordinary skill in the related art within the scope of the basic technical idea of the present application is within the scope of the present application.

Claims

1. A household appliance (100) comprising a first part (10) and a second part (20) that are relatively movable, a magnetic means (30), a magnetic detection means (40);

one of said magnetic means (30) and said magnetic detection means (40) being located on said first part (10) and the other of said magnetic means (30) and said magnetic detection means (40) being located on said second part (20);

the magnetic device (30) is configured for generating a magnetic signal;

the magnetic detection means (40) is configured for detecting magnetic signal strength;

the method is characterized in that: the magnetic detection device (40) is in communication connection with the control device (50); the control device (50) is configured to determine a first threshold value from a first magnetic signal strength or a correlation value of the first magnetic signal strength detected by the magnetic detection device (40) when the first component (10) and the second component (20) are located at the first relative position, and to determine whether the first component (10) and the second component (20) are located at the first relative position using the first threshold value.

2. A household appliance (100) as in claim 1, characterized by: the control device (50) comprises a comparison unit (51), the comparison unit (51) is used for comparing the magnetic signal intensity or the associated value of the magnetic signal intensity detected by the magnetic detection device (40) with the first threshold value, and the control device (50) judges whether the first component (10) and the second component (20) are located at the first relative position or not based on the comparison result.

3. A household appliance (100) as in claim 1, characterized by: the first threshold is less than or equal to the first magnetic signal strength or a value associated with the first magnetic signal strength.

4. A household appliance (100) as in claim 1, characterized by: the control device (50) is configured to: when the magnetic signal strength or the associated value of the magnetic signal strength detected by the magnetic detection device (40) is greater than or equal to the first threshold value, judging that the first component (10) and the second component (20) are located at a first relative position; and/or, when the magnetic signal strength or the associated value of the magnetic signal strength detected by the magnetic detection device (40) is less than the first threshold value, determining that the first component (10) and the second component (20) are not located at the first relative position.

5. A household appliance (100) as in claim 1, characterized by: the control device (50) is configured to: determining that the first component (10) and the second component (20) are in a first relative position based on a change in the magnetic signal strength or the associated value of magnetic signal strength from being less than the first threshold value to being greater than the first threshold value; and/or, based on the change of the magnetic signal strength or the associated value of the magnetic signal strength from being greater than the first threshold value to being less than the first threshold value, determining that the first component (10) and the second component (20) are not located in the first relative position.

6. A household appliance (100) as in claim 1, characterized by: the control means (50) is adapted to determine a first threshold value from a first magnetic signal strength or a correlation of a first magnetic signal strength detected by the magnetic detection means (40) when the first and second components (10, 20) are at the first relative position in a preset mode, and to use the first threshold value to determine whether the first and second components (10, 20) are at the first relative position in a use mode.

7. A household appliance (100) as in any one of the claims 1 to 6, characterized by: the household appliance (100) is a refrigerator, the second component (20) is a door body and/or a storage drawer, the first component (10) comprises a box body or an additive on the box body, and the first relative position is the relative position when the door body and/or the storage drawer are closed.

8. Household appliance (100) according to claim 7, wherein the refrigerator comprises a lighting system and/or a refrigeration system;

based on the judgment result that the door body and/or the storage drawer are/is located at the first relative position, the control device (50) controls the lighting system of the refrigerator to be closed or in a state of not being opened, or the control device (50) controls at least one part of the refrigeration system of the refrigerator to be opened or in a state of allowing the refrigerator to be opened; and/or

Based on the judgment result that the door body and/or the storage drawer are not positioned at the first relative position, the control device (50) controls the lighting system to be opened or not to be closed, or controls at least one part of the refrigerator refrigeration system to be closed or not to be opened.

9. A household appliance (100) comprising a first part and a second part (20) movable with respect to the first part, magnetic means (30), magnetic detection means (40);

the magnetic device (30) is configured for generating a magnetic signal;

the second part (20) being movable relative to the first part between a closed position and an open position;

determining a first threshold value according to the magnetic signal strength or the correlation value of the magnetic signal strength detected by the magnetic detection device (40) when the second component (20) is located at the closed position in a preset stage;

-when said second member (20) is in the closed position, the magnetic signal strength or the associated value of the magnetic signal strength detected by said magnetic detection means (40) is greater than said first threshold value; the magnetic signal strength or the associated value of the magnetic signal strength detected by the magnetic detection means (40) is less than the first threshold value when the second part (20) is in the open position.

10. A household appliance (100) as in claim 9, wherein said household appliance (100) is a refrigerator, said second component (20) being a locker drawer and/or a door, said refrigerator comprising a control device (50); when the magnetic signal strength or the associated value of the magnetic signal strength detected by the magnetic detection device (40) is greater than the first threshold value, the control device (50) controls the lighting system of the refrigerator to be switched off or not to be in a state of being switched on, and/or at least one part of the refrigeration system of the refrigerator to be switched on or to be in a state of being allowed to be switched on; and/or, when the magnetic signal intensity or the associated value of the magnetic signal intensity detected by the magnetic detection device (40) is less than the first threshold value, the control device (50) controls the lighting system of the refrigerator to be turned on or in a state of not turning off, and/or at least one part of the refrigeration system of the refrigerator to be turned off or in a state of not turning on.

11. A control method of a household appliance (100), characterized in that the household appliance (100) comprises a first part (10), a second part (20) movable with respect to the first part (10), magnetic means (30) for generating a magnetic signal, magnetic detection means (40) for detecting the intensity of the magnetic signal; one of said magnetic means (30) and said magnetic detection means (40) being located on said first part (10) and the other of said magnetic means (30) and said magnetic detection means (40) being located on said second part (20); characterized in that the method comprises:

in a preset mode, determining a first threshold value according to the strength of a first magnetic signal detected by the magnetic detection device when the first component (10) and the second component (20) are located at a first relative position;

the first threshold may be used in a use mode to determine whether the first component (10) and the second component (10) are in a first relative position.

12. The control method of a household appliance (100) according to claim 11, in said use mode comparing the magnetic signal strength or the associated value of the magnetic signal strength detected by said magnetic detection means (40) with said first threshold value, outputting a status command based on the comparison result.

13. Control method of a household appliance (100) according to claim 12, said status instructions comprising off status instructions and/or on status instructions.

14. The control method of a household appliance (100) according to claim 13, outputting an off-state command when the magnetic signal strength or the associated value of the magnetic signal strength detected by the magnetic detection means (40) is greater than the first threshold; and/or, when the magnetic signal intensity or the associated value of the magnetic signal intensity detected by the magnetic detection device (40) is less than the first threshold value, outputting an open state instruction.

15. The control method of a household appliance (100) according to claim 14, outputting an off-state command when the magnetic signal strength or the associated value of the magnetic signal strength detected by said magnetic detection means (40) changes from being less than said first threshold value to being greater than said first threshold value; and/or, when the magnetic signal intensity or the associated value of the magnetic signal intensity detected by the magnetic detection device (40) is changed from being larger than the first threshold value to being smaller than the first threshold value, outputting an opening state instruction.

16. Method for controlling a household appliance (100) according to claim 11, said first threshold value being smaller than a first magnetic signal strength or a first associated value of a magnetic signal strength detected by said magnetic detection means (40) when said first component (10) and said second component (20) are in a first relative position.

17. The control method of a household appliance (100) according to claim 11, said first threshold comprising a first operating threshold and a first release threshold, said first operating threshold being greater than the first release threshold; and outputting a closing state instruction when the magnetic signal strength or the correlation value of the magnetic signal strength is greater than the first release threshold value.

18. The control method of a household appliance (100) according to claim 11, said first threshold comprising a first operating threshold and a first release threshold, said first operating threshold being greater than the first release threshold; and when the magnetic signal intensity or the correlation value of the magnetic signal intensity is smaller than the first release threshold value, outputting an opening state instruction.

19. The control method of a household appliance (100) according to claim 11, characterized in that: the household appliance (100) comprises a memory in which a second threshold value is recorded, and in a preset mode, when the strength of the magnetic signal detected by the magnetic detection device (40) or the magnetic signal correlation value obtained by the magnetic signal is greater than or equal to the second threshold value, the first component (10) and the second component (20) are confirmed to be located at a first relative position, and the first threshold value is determined according to the strength of the first magnetic signal detected by the magnetic detection device (40).

20. A control method of a household appliance (100) as in claim 19, characterized by: when the strength of the magnetic signal detected by the magnetic detection device (40) or the correlation value of the strength of the magnetic signal obtained by the magnetic signal is smaller than the second threshold value, the first threshold value is not acquired and/or an alarm instruction is output.

21. The control method of a household appliance (100) according to claim 11, characterized in that: the second part (20) comprises a door body and/or a storage drawer, and the first relative position is the relative position when the door body and/or the storage drawer is closed.