Washing machine door control method, electronic device and washing machine

Abstract

This invention relates to a washing machine door control method, electronic device, and washing machine. The method is applied to a washing machine equipped with a first sensing device, a second sensing device, and an electronically controlled door opening and closing device. The method includes: a monitoring step: monitoring a first feedback signal from the first sensing device and a second feedback signal from the second sensing device, wherein the first and second sensing devices are used to jointly detect user lower limb movements; and controlling the operation of the electronically controlled door opening and closing device to control the state of the washing machine door, based at least on the signal feedback from the first and second sensing devices and the current state of the washing machine. Using this invention, the opening and closing of the washing machine door can be automatically controlled by combining the sensing devices and the electronically controlled door opening and closing device, eliminating the need for manual opening by the user, freeing up their hands and improving convenience.

Description

Technical Field

[0001] This invention relates to the field of home appliance technology, and in particular to a method for controlling the door of a washing machine, an electronic device, and a washing machine. Background Art

[0002] Currently, there are more and more combination garment handling devices on the market (such as washing machine and washing machine, washing machine and dryer, or dryer and dryer combination), but most of these appliances on the market use manual doors, which is inconvenient to use.

[0003] In modern life, washing machines, dryers, and washer-dryer combos have gradually become indispensable appliances, and the demands for their functions are becoming increasingly diverse. As the most commonly used household appliance in daily life, washing machines, with the continuous development and progress of technology, are increasingly focusing on improving the user experience while still meeting basic laundry needs.

[0004] Because the door of a front-loading washing machine is located on the front panel, users must bend down or squat to manually open and close the door every time they need to load or unload clothes. This is especially inconvenient when users are carrying clothes and need to open the door. Furthermore, this type of manually operated door can be opened by young children, increasing the risk of children accidentally entering the inner drum and causing accidents. Summary of the Invention

[0005] To overcome the problems existing in related technologies, a first aspect of the present invention provides a washing machine door control method, wherein the method is applied to a washing machine equipped with a first sensing device, a second sensing device, and an electronically controlled door opening and closing device, and the method includes:

[0006] Monitoring steps: Monitor the first feedback signal of the first sensing device and the second feedback signal of the second sensing device, wherein the first sensing device and the second sensing device are used to detect the user's lower limb movements in combination;

[0007] Based at least on the signal feedback from the first and second sensing devices and the current state of the washing machine, the operation of the electronic door switch device is controlled to control the state of the washing machine door.

[0008] Optionally, the method further includes:

[0009] The monitoring step is performed in response to a trigger signal, wherein the trigger signal includes:

[0010] Feedback signal from a third sensing device, which is positioned above the first and second sensing devices, for detecting the user's upper limbs, and / or...

[0011] A washing machine status signal is generated based on the current state of the washing machine, indicating that the washing machine door is allowed to change its state.

[0012] Optionally, the monitoring step performed in response to a trigger signal includes:

[0013] The monitoring step is performed in response to a feedback signal sent by the third sensing device indicating that a user's upper limb has been detected (at this time, to determine whether the door needs to be opened); and / or,

[0014] The monitoring step is performed in response to a feedback signal sent by the third sensing device indicating that no user's upper limb has been detected for a set duration (at this time, it is to determine whether the door needs to be closed).

[0015] Optionally, the first sensing device and the second sensing device are disposed in a first preset area on the front of the washing machine and are spaced apart along the width direction of the front of the washing machine, wherein the first preset area is the front area of ​​the washing machine that is less than half the height of the entire machine and corresponds to the user's legs and / or feet;

[0016] The third sensing device is located at a position above half the height of the washing machine, corresponding to the user's upper limbs.

[0017] Optionally, the current state of the washing machine includes the operating state of the washing machine and the door state of the washing machine.

[0018] The signal feedback status of the first sensing device and the second sensing device includes the time interval between the first feedback signal and the second feedback signal, and / or the duration during which at least one of the first sensing device and the second sensing device has not continuously provided a corresponding feedback signal.

[0019] The step of controlling the operation of the electronic door opening and closing device based at least on the signal feedback from the first and second sensing devices and the current state of the washing machine includes:

[0020] When the operating state is standby, the door is closed, and the time interval is less than a first duration, the electronic door switch device is controlled to open the washing machine door, and / or...

[0021] When the operating state is standby, the door state is open, and the no-feedback period exceeds a second duration, the electronic door switch device is controlled to close the washing machine door, and / or,

[0022] When the operating state is an openable state, the door is closed, and the time interval is less than a first duration, the electronic door switch device is controlled to open the washing machine door; and / or,

[0023] When the operating state is a non-openable state, the door is closed, and the time interval is less than a first duration, the electronic door switch device is controlled to keep the washing machine door closed.

[0024] Optionally, the current state of the washing machine includes the environmental state of the washing machine and the door state of the washing machine.

[0025] The signal feedback from the first and second sensing devices includes the time interval between the first feedback signal and the second feedback signal;

[0026] The step of controlling the operation of the electronic door opening and closing device to control the state of the washing machine door, based at least on the signal feedback from the first and second sensing devices and the current state of the washing machine, includes:

[0027] If the door is closed and the time interval is less than a first duration, and if the environmental conditions meet the door opening conditions, then the electronic door switch device is controlled to open the washing machine door, and / or...

[0028] If the door is closed and the time interval is less than a first duration, and the environmental conditions do not meet the conditions for opening the door, then the electronic door switch device is controlled to keep the washing machine door closed.

[0029] Optionally, the environmental conditions include: the drum temperature and the water level inside the washing machine;

[0030] The environmental conditions do not meet the conditions for opening the door, including: the temperature inside the cylinder exceeds a temperature threshold and / or the water level inside the cylinder exceeds a water level threshold.

[0031] Optionally, the method further includes:

[0032] If the environmental conditions do not meet the door opening conditions, an environmental state change strategy and a corresponding strategy duration are generated based on the environmental conditions and the operating state of the washing machine. The environmental state change strategy is used to make the environmental conditions meet the door opening conditions.

[0033] Output at least one of the policy duration and the environmental state change policy to the user in order to obtain user confirmation;

[0034] After obtaining user confirmation, the environment state change strategy is executed.

[0035] Optionally, when the environmental conditions do not meet the door opening conditions, generating an environmental state change strategy and a corresponding strategy duration based on the environmental conditions and the operating state of the washing machine includes:

[0036] If the water level inside the drum exceeds a water level threshold, a drainage strategy and corresponding drainage duration are generated based on the water level inside the drum and the operating status of the washing machine, and / or,

[0037] If the temperature inside the drum exceeds the temperature threshold, a cooling strategy and a corresponding cooling duration are generated based on the temperature inside the drum and the operating status of the washing machine.

[0038] The washing machine's operating state includes a non-stop phase and a stopable phase. When the washing machine is in the non-stop phase, the environmental state change strategy includes the execution process of the non-stop phase, and the strategy duration includes the remaining duration of the non-stop phase and one of the drainage duration and the cooling duration. When the washing machine is in the stopable phase, the environmental state change strategy includes a first strategy of continuing to execute the stopable phase and a second strategy of terminating the stopable phase.

[0039] Optionally, the current state of the washing machine includes the water level inside the drum during the washing program. Controlling the operation of the electronic door opening / closing device to control the state of the washing machine door, based at least on the signal feedback from the first and second sensors and the current state of the washing machine, includes:

[0040] If it is determined that the user has a need to open the door based on the signal feedback from the first and second sensing devices, the water level in the cylinder is compared with the water level threshold to obtain the first comparison result.

[0041] The electric gate opening and closing device is controlled by using a rule that matches the first comparison result.

[0042] Optionally, the step of controlling the electric door opening and closing device using a rule that matches the first comparison result includes:

[0043] When the water level in the drum is lower than the water level threshold, the electronic door switch device is powered on to trigger the electronic door switch device to open the washing machine door;

[0044] When the water level in the drum is higher than or equal to the threshold water level, the drainage program is started to drain the washing tub until the water level in the drum is lower than the threshold water level. Then, the electronic door switch device is powered on to trigger the electronic door switch device to open the washing machine door.

[0045] Optionally, the current state of the washing machine includes the drum temperature during the drying program. Controlling the operation of the electronic door opening / closing device to control the state of the washing machine door, based at least on the signal feedback from the first and second sensors and the current state of the washing machine, includes:

[0046] If it is determined that the user has a need to open the door based on the signal feedback from the first and second sensing devices, the temperature inside the cylinder is compared with the temperature threshold to obtain a second comparison result.

[0047] The electric gate opening and closing device is controlled by using a rule that matches the second comparison result.

[0048] Optionally, the step of controlling the electric door opening and closing device using a rule that matches the second comparison result includes:

[0049] When the temperature inside the drum is lower than the temperature threshold, power is applied to the electronically controlled door switch device to trigger it to open the washing machine door.

[0050] When the temperature inside the drum is equal to or higher than the preset temperature, a preset operation is performed to cool down the washing tub until the temperature inside the drum is lower than the temperature threshold. Then, the electric door switch device is powered on to trigger the electric door switch device to open the washing machine door.

[0051] Optionally, the step of performing a preset operation to cool the washing tub includes:

[0052] Turn off the heated washing tub module that has been turned on, and detect the initial temperature of the return air to obtain the first temperature;

[0053] Open the air duct spray valve to cool down the temperature inside the washing tub;

[0054] Detect the threshold for the decrease in return air temperature per unit time;

[0055] Based on the first temperature, the temperature threshold, and the return air temperature drop threshold per unit time, the cooling time is determined and output to the user.

[0056] Optionally, the electrically controlled door opening and closing device is a push rod motor;

[0057] The push rod motor is located on the area where the edge of the washing tub overlaps with the door of the washing machine.

[0058] Optionally, the electrically controlled door switch device includes: an electromagnetic coil, a first permanent magnet, and a second permanent magnet;

[0059] The electromagnetic coil is disposed on the hinge connecting the edge of the washing machine tub and the door.

[0060] The first permanent magnet and the second permanent magnet are respectively disposed on both sides of the electromagnetic coil;

[0061] When the electromagnetic coil is energized, it repels the first permanent magnet, the door is opened, and the distance between the second permanent magnet and the electromagnetic coil decreases.

[0062] When the electromagnetic coil is energized again, it repels the second permanent magnet, the door is closed, and the distance between the first permanent magnet and the electromagnetic coil decreases.

[0063] Optionally, after energizing the electronically controlled door switch device to trigger it to open the washing machine door, the method further includes:

[0064] In the second mode, the third feedback signal of the first sensing device and the fourth feedback signal of the second sensing device are monitored. In the second mode, the washing machine door can be closed based on the user's second limb movement.

[0065] Determine the second interval duration between the received third feedback signal and the fourth feedback signal;

[0066] When the second interval duration matches the second duration, the electromagnetic coil is energized to close the door, wherein the second duration is the duration corresponding to the second limb action preset by the user.

[0067] Optionally, the method further includes:

[0068] Based on the signal feedback from the first and second sensing devices, and the detection result from the third sensing device, it is determined whether the warning conditions are met.

[0069] If the aforementioned warning conditions are met, then a warning message is output.

[0070] The conditions for meeting the warning include: the third sensing device does not detect the upper limb, the first sensing device and the second sensing device detect the user's lower limb movement, and the warning information includes: information related to the child's operation.

[0071] When both the first and second sensors are located below the washing machine door, the conditions for meeting the warning include: when the washing machine door is open, the third sensor does not detect an upper limb, and at least one of the first and second sensors continuously provides signal feedback for more than a set time. The warning information includes: the door cannot be closed or clothing is obstructing the view.

[0072] A second aspect of the present invention provides an electronic device, including a memory for storing one or more computer instructions;

[0073] A processor for invoking and executing the computer instructions to implement the method provided in the first aspect.

[0074] A third aspect of the present invention provides a washing machine, which is equipped with a first sensing device, a second sensing device, and an electronically controlled door switch device; the washing machine uses the method described in any one of the above method embodiments, or the washing machine door control device described in the above device embodiments to control the washing machine door.

[0075] The technical solution of the present invention is applied to a washing machine equipped with a first sensing device, a second sensing device, and an electronically controlled door switch device. The first sensing device and the second sensing device are used to jointly detect the user's lower limb movements, and the electronically controlled door switch device is used to control the state of the washing machine door. The washing machine employs the method described in any of the first aspects, or has the electronic equipment described in the second aspect.

[0076] Optionally, the washing machine also includes a feedback signal from a third sensing device;

[0077] The third sensing device is positioned above the first and second sensing devices and is used to detect the user's upper limbs; and / or,

[0078] The first sensing device and the second sensing device are disposed within a first preset area on the front of the washing machine and are spaced apart along the width direction of the front of the washing machine. The first preset area is the front area of ​​the washing machine that is less than half the height of the entire machine, corresponding to the user's legs and / or feet.

[0079] Both the first and second sensing devices are located below the washing machine door.

[0080] The electrically controlled door switch device is a push rod motor;

[0081] The push rod motor is located in the area where the edge of the washing machine tub overlaps with the door.

[0082] The electrically controlled door switch device includes: an electromagnetic coil, a first permanent magnet, and a second permanent magnet;

[0083] The electromagnetic coil is disposed on the hinge connecting the edge of the washing machine tub and the door.

[0084] The first permanent magnet and the second permanent magnet are respectively disposed on both sides of the electromagnetic coil;

[0085] When the electromagnetic coil is energized, it repels the first permanent magnet, the door is opened, and the distance between the second permanent magnet and the electromagnetic coil decreases.

[0086] When the electromagnetic coil is energized again, it repels the second permanent magnet, the door is closed, and the distance between the first permanent magnet and the electromagnetic coil decreases.

[0087] According to the technical solution of the present invention, the washing machine automatically controls the state of the washing machine door based on the feedback signal of the sensing device and the current state of the washing machine. The user only needs to perform a physical action to make the sensing device generate a feedback signal, without having to manually open the washing machine door, which can free up the hands and improve convenience.

[0088] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the invention. Attached Figure Description

[0089] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0090] Figure 1 This is a flowchart illustrating a washing machine door control method according to an exemplary embodiment.

[0091] Figure 2 This is a flowchart illustrating a washing machine door control method according to an exemplary embodiment;

[0092] Figure 3 This is a schematic diagram of the sensor layout structure on a washing machine according to an exemplary embodiment;

[0093] Figure 4 This is a schematic diagram of the position structure of the electromagnetic coil when the door is closed, according to an exemplary embodiment.

[0094] Figure 5 This is a schematic diagram of the electromagnetic coil position structure when the door is opened, according to an exemplary embodiment.

[0095] Figure 6 This is a flowchart illustrating a washing machine door control method according to an exemplary embodiment;

[0096] Figure 7 This is a flowchart illustrating a washing machine door control method according to an exemplary embodiment;

[0097] Figure 8 This is a structural block diagram of a washing machine door control device according to an exemplary embodiment. Detailed Implementation

[0098] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0099] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0100] According to an embodiment of this application, a method for controlling a washing machine door is provided, referring to... Figure 1 The method includes monitoring and control steps, which will be explained below.

[0101] In this embodiment, the monitoring steps include: monitoring a first feedback signal from a first sensing device and a second feedback signal from a second sensing device. The first and second sensing devices are used in combination to detect user lower limb movements, such as leg sweeping movements or light tapping of the foot on the box.

[0102] Control steps: Based at least on the signal feedback from the first and second sensing devices and the current state of the washing machine, control the operation of the electronic door opening and closing device to control the state of the washing machine door.

[0103] The signal feedback includes: whether the first and second sensing devices provide corresponding feedback signals, the order of the first and second feedback signals, the time interval between the first and second feedback signals, and the duration of the first and / or second feedback signals. For example, whether or not a corresponding feedback signal is provided can be used to determine the presence of a user; the order of feedback can be used to determine whether the user's limb movements conform to a preset direction; and the time interval is used, alone or in combination with the order of feedback, to determine whether the user's limb movements conform to a preset action pattern indicating the need to control the door's state.

[0104] The method provided in this embodiment can control the washing machine door by detecting the user's lower limb movements, freeing the user's hands and making operation more convenient.

[0105] Optionally, in one implementation of this embodiment, the method further includes a triggering step: triggering the execution of the monitoring step in response to a trigger signal.

[0106] For example, the trigger signal includes a feedback signal from a third sensing device, which is positioned above the first and second sensing devices and is used to detect the user's upper limbs. Exemplarily, the monitoring step is executed in response to a feedback signal from the third sensing device indicating that the user's upper limbs have been detected, and then the result of the monitoring step determines whether the door needs to be opened; or, the monitoring step is executed in response to a feedback signal from the third sensing device indicating that the user's upper limbs have not been detected for a set duration, and then the result of the monitoring step determines whether the door needs to be closed.

[0107] For example, the trigger signal is a washing machine status signal generated based on the current state of the washing machine, indicating that the washing machine door's state can be changed. Exemplarily, a washing machine status signal indicating that the washing machine door's state can be changed can be generated when the washing machine's current state is a state that allows users to directly open and close the door, such as a standby state, or a state where the door can be opened immediately after an interruption, such as a weighing program running. In other words, this embodiment provides a washing machine status signal indicating whether the washing machine door's state can be changed. Under different operating states (or running programs or running stages) of the washing machine, the washing machine status signal changes synchronously according to whether the washing machine door's state can be changed. When the washing machine status signal indicates that the user can directly open and close the door, the execution of the monitoring step can be triggered.

[0108] The above-described implementation method of this application facilitates triggering the monitoring step at a reasonable time, thereby avoiding the problems of energy waste and reduced hardware lifespan caused by the continuous execution of the monitoring step.

[0109] Optionally, in one implementation of this embodiment, the first sensing device and the second sensing device are disposed in a first preset area on the front of the washing machine and are spaced apart along the width direction of the front of the washing machine. The first preset area is the front area of ​​the washing machine that is less than half the height of the entire machine and corresponds to the user's legs and / or feet, so as to accurately detect the user's lower limb movements.

[0110] Optionally, in one implementation of this embodiment, the third sensing device is positioned at a position above half the height of the washing machine, corresponding to the user's upper limb, for accurately detecting the user's upper limb. The detection result may include: the user's upper limb was detected and the user's upper limb was not detected.

[0111] Optionally, in one implementation of this embodiment, the current state of the washing machine includes the washing machine's operating state and the washing machine door state. The operating state may include standby, weighing, washing, drying, and conditioning modes, etc., and these operating states can be further categorized into openable states (including cases where the door can be opened directly and cases where the door can be opened immediately after interrupting the current program) and non-openable states. The washing machine door state may include door open and door closed.

[0112] The signal feedback status of the first sensing device and the second sensing device includes the time interval between the first feedback signal and the second feedback signal, and / or the duration during which at least one of the first sensing device and the second sensing device has not continuously provided a corresponding feedback signal.

[0113] In this implementation, the operation of the electrically controlled door opening and closing device can be controlled in the following way:

[0114] Method 1: When the operating state is standby, the door state is closed, and the time interval is less than a first duration, control the electronic door switch device to perform the action of opening the washing machine door.

[0115] Method 2: When the operating state is standby, the door state is open, and the no-feedback time exceeds the second duration, control the electronic door switch device to close the washing machine door.

[0116] Method 3: When the operating state is an openable state (e.g., weighing state), the door state is closed, and the time interval is less than the first duration, control the electronic door switch device to perform the action of opening the washing machine door.

[0117] Method 4: When the operating state is a non-openable state (e.g., the drying and dehumidification state in the drying state), the door state is closed, and the time interval is less than the first duration, control the electronic door switch device to perform the action of keeping the washing machine door closed.

[0118] Optionally, in one implementation of this embodiment, the current state of the washing machine includes the environmental state of the washing machine and the door state of the washing machine. The environmental state includes the drum temperature and water level, and the door state includes whether the door is open or closed. In other implementations, the environmental state may also include ozone concentration, humidity, etc.

[0119] The signal feedback from the first and second sensing devices includes the time interval between the first feedback signal and the second feedback signal.

[0120] In this implementation, the operation of the electrically controlled door opening and closing device can be controlled in the following way:

[0121] If the door is closed and the time interval is less than a first duration, and if the environmental conditions meet the door opening conditions, then the electronic door switch device is controlled to open the washing machine door, and / or...

[0122] If the door is closed and the time interval is less than a first duration, and the environmental conditions do not meet the conditions for opening the door, then the electronic door switch device is controlled to keep the washing machine door closed.

[0123] For example, the environmental conditions that do not meet the door opening conditions include: the temperature inside the cylinder exceeding a temperature threshold and / or the water level inside the cylinder exceeding a water level threshold. Conversely, the environmental conditions that meet the door opening conditions are:

[0124] Furthermore, if the environmental conditions do not meet the door opening requirements, an environmental state change strategy and a corresponding strategy duration can be generated based on the environmental conditions and the washing machine's operating state. The environmental state change strategy is used to make the environmental conditions meet the door opening requirements. At least one of the strategy duration and the environmental state change strategy is output to the user for confirmation. After user confirmation, the environmental state change strategy is executed. If no user confirmation is obtained, the door state is not changed.

[0125] For example, if the water level in the drum exceeds a water level threshold, a drainage strategy and a corresponding drainage duration are generated based on the water level in the drum and the operating status of the washing machine; and / or, if the temperature in the drum exceeds a temperature threshold, a cooling strategy and a corresponding cooling duration are generated based on the temperature in the drum and the operating status of the washing machine.

[0126] The washing machine's operating state includes a non-stop phase and a stopable phase. When the washing machine is in the non-stop phase, the environmental state change strategy includes the execution process of the non-stop phase. The strategy duration includes the remaining duration of the non-stop phase and one of the drainage duration and the cooling duration.

[0127] For example, if the washing machine is in the drying / dehumidification stage, and to ensure drying effectiveness, safety, and energy efficiency, this stage can be set as a non-stop stage. In this case, environmental change strategies could include: continuing the drying / dehumidification stage, followed by cooling (see the related description below for details). The strategy duration includes: the remaining duration of the drying / dehumidification stage + the duration of the cooling process. Similarly, if stopping a certain stage of the washing cycle would result in undesirable resource waste, that stage can be set as a non-stop stage.

[0128] In other words, in the implementation of this application embodiment, different operating states (or operating stages) of the washing machine are configured with configuration information indicating whether they can be interrupted / stopped. This configuration information can be set by the user as needed, or it can be embedded in the washing machine's controller by the manufacturer and its modification permission can be granted to the user. In this way, during the operation of the washing machine, whether the current operating state can be interrupted / stopped can be obtained in real time, and thus used as reference information for door state control in this application embodiment.

[0129] For example, when the washing machine is in a stopable operating state, the environmental state change strategy includes a first strategy of continuing the stopable state (until the current state ends) and a second strategy of terminating the stopable state. In other words, two optional strategies can be provided for user confirmation, with different strategies corresponding to different durations.

[0130] For example, in this implementation, the operating states of the washing machine include: washing state and drying state. The drying state includes: drying heating stage (stoppable stage), drying dehumidification stage (non-stoppable stage), and drying judgment stage (stoppable stage).

[0131] It should be noted that the drying and dehumidification stages are considered sub-stages of the drying state because the implementation of this application provides a principle for dividing a state into stopable and non-stopable stages. In other implementations of this application, the drying and dehumidification stages themselves can also be considered as the operating state of the washing machine. Similarly, in the washing state or other states, the stages they contain can be considered as stopable and non-stopable stages, or as the operating state of the washing machine, as needed.

[0132] Optionally, in one implementation of this embodiment, the current state of the washing machine includes the water level inside the drum during the washing program. The method further includes: if it is determined that the user has a need to open the door based on signal feedback from the first and second sensing devices, comparing the water level inside the drum with a water level threshold to obtain a first comparison result; and controlling the electronically controlled door opening / closing device using a rule matching the first comparison result. A related description is provided below and will not be repeated here.

[0133] Optionally, in one implementation of this embodiment, the current state of the washing machine includes the drum temperature during the drying program. Controlling the operation of the electronic door opening / closing device to control the state of the washing machine door, based at least on the signal feedback from the first and second sensors and the current state of the washing machine, includes: comparing the drum temperature with a temperature threshold to obtain a second comparison result when it is determined from the signal feedback from the first and second sensors that the user needs to open the door; and controlling the electronic door opening / closing device using a rule matching the second comparison result. Further details are provided below and will not be repeated here.

[0134] Optionally, in one implementation of this embodiment, the washing machine includes the first sensing device, the second sensing device, and the third sensing device mentioned above. The method further includes: determining whether a warning condition is met based on the signal feedback from the first and second sensing devices and the detection result of the third sensing device; if the warning condition is met, then outputting a warning message.

[0135] The conditions for meeting the warning include: the third sensing device does not detect upper limbs, the first and second sensing devices detect user lower limb movements, and the warning information includes: information related to the child's operation, such as outputting a prompt to the user (the child's parent) that the child may be operating the washing machine, or outputting warning information to the child (e.g., outputting graphical reminder information through sound, display screen, etc.).

[0136] In this scenario, where both the first and second sensors are located below the washing machine door, the pre-warning conditions include: the washing machine door is open, the third sensor does not detect any upper limbs, and at least one of the first and second sensors continuously provides signal feedback for a set duration. The pre-warning information includes: the door cannot be closed or clothing is obstructing the view. Using this method, the signal feedback from the first and second sensors can be used to determine if any clothing has been left at the washing machine drum opening, thus alerting the user to information such as clothing obstructing the door and preventing it from closing, or clothing being left behind.

[0137] According to an embodiment of this application, a method for controlling a washing machine door is provided, referring to... Figure 2 The methods include:

[0138] 100: In the first mode, monitor the first feedback signal of the first sensing device and the second feedback signal of the second sensing device.

[0139] In the first mode, the washing machine door can be opened based on the user's first limb movement. The first limb movement can be any appropriate action, such as a leg sweep or a light tap on the machine with the foot, while the hand movement can be a beckoning gesture, a tap, or a touch.

[0140] The washing machine door control method provided in this application is applied to washing machines equipped with a first sensing device, a second sensing device, and an electronically controlled door opening and closing device. Users can trigger the washing machine to enter a first mode via body language or voice control. In the first mode, the washing machine can open the door based on the user's first body movement.

[0141] The first and second sensors are located in a preset area on the front of the washing machine; the preset area is the front area of ​​the washing machine with a height of less than half; this sensor location makes it convenient for the user to operate the washing machine door to open or close with their lower body when holding clothes.

[0142] Optionally, in one implementation of this embodiment, in addition to two sensing devices that can monitor the user's limb movements that trigger the opening of the washing machine door, a third sensing device can also be provided to prevent other objects such as children or pets from accidentally triggering the opening of the washing machine door. The third sensing device can be located at the front end of the washing machine.

[0143] Before monitoring the first feedback signal of the first sensor and the second feedback signal of the second sensor, the third feedback signal of the third sensor is monitored; if the third feedback signal is detected, the system enters the first mode.

[0144] It should be noted that all three sensing devices can be configured as optical sensors, such as infrared sensors, to monitor the object through electrical signal feedback; alternatively, the first and second sensing devices can be configured as optical sensors, and the third sensing device can be configured as a visual sensor to monitor the object through image recognition.

[0145] For example, the electric door switch device can be a push rod motor or a device consisting of an electromagnetic coil and a permanent magnet.

[0146] A schematic diagram of the layout structure of an exemplary sensor, i.e., sensing device, on a washing machine is shown below. Figure 3As shown, the washing machine has three infrared sensors on its outer surface. These sensors are positioned below half the height of the machine, with their sensing areas facing the opening of the clothes handling drum. An additional accessory sensor, also an infrared sensor, is located at the front end of the washing machine. Through the coordinated judgment of these multiple sensors, a double-safety anti-accidental opening mechanism is formed. In situations where the door may accidentally open, this mechanism prevents relatively short living beings such as infants, pets, and robot vacuums from accidentally opening the door when passing by the clothes handling drum, thus enhancing safety and improving the user experience.

[0147] In a preferred embodiment, the first sensing device, namely infrared sensor 1, and the second sensing device, namely infrared sensor 2, are disposed at the bottom of the washing machine and are arranged horizontally between the two infrared sensors. When the user opens the door with a leg sweeping motion, both infrared sensors need to receive feedback signals simultaneously within a first preset time period.

[0148] It should be noted that the bottom of the washing machine is not limited to two sensors placed side by side. Three sensors or four sensors placed in two rows can also be set up to ensure that the user's actions of triggering the opening or closing of the washing machine door are fully monitored.

[0149] In a preferred embodiment, such as Figure 3 As shown, the electronically controlled door opening and closing device is a push rod motor; the push rod motor is located on the area where the washing machine tub overlaps with the door. When the push rod motor is powered on, it pushes the washing machine door open.

[0150] In a preferred embodiment, combined with Figure 4 A schematic diagram showing the position of the electromagnetic coil when the door is closed. Figure 5 The schematic diagram of the electromagnetic coil position structure when the door is open shows that the electronically controlled door opening and closing device includes: an electromagnetic coil, a first permanent magnet (permanent magnet 1), and a second permanent magnet (permanent magnet 2); the electromagnetic coil is set on the hinge connecting the washing machine tub and the door; the first permanent magnet and the second permanent magnet are respectively set on both sides of the electromagnetic coil; when the electromagnetic coil is energized, it repels the first permanent magnet, the door is opened, and the distance between the second permanent magnet and the electromagnetic coil decreases; when the electromagnetic coil is energized again, it repels the second permanent magnet, the door is closed, and the distance between the first permanent magnet and the electromagnetic coil decreases.

[0151] The automatic door closing structure provided in this optional embodiment has low structural complexity and low cost.

[0152] 102: Determine the first interval between the received first feedback signal and the second feedback signal.

[0153] Both the first and second feedback signals are electrical signals. The washing machine is equipped with a control system that receives the first and second feedback signals sequentially and calculates the reception interval between the two feedback signals, i.e., the first interval duration.

[0154] 104: If the first interval duration matches the first duration, determine the current state of the washing machine.

[0155] The first duration is the duration corresponding to the user-preset first limb action. The first duration can be flexibly set by those skilled in the art based on the setting of the first limb action, and this embodiment does not impose specific limitations on it.

[0156] 106: When the current state is standby, power on the electric door switch device to trigger the electric door switch device to open the washing machine door.

[0157] To ensure safety when the washing machine door is opened, in this embodiment of the application, after receiving an instruction from the user to open the washing machine door, the current state of the washing machine is determined, and different timings for opening the door are selected based on the different states, that is, different control strategies for opening the door are selected.

[0158] If the washing machine is confirmed to be in standby mode, then open the washing machine door directly.

[0159] Using the washing machine door control method provided in this embodiment, the washing machine automatically controls the opening of the washing machine door according to the feedback signal of the sensing device. The user only needs to perform a first limb action to make the sensing device generate a feedback signal, without having to manually open the washing machine door. This not only frees up the hands and improves convenience, but also prevents young children from accidentally entering the washing machine drum by manually opening the door.

[0160] Optionally, in one implementation of this embodiment, after determining the current state of the washing machine, if the washing machine is currently in a washing state, the following exemplary process can be executed, including the following sub-steps:

[0161] Sub-step 1: With the washing machine in the washing state, determine the first water level in the washing tub;

[0162] Sub-step 2: Compare the first water level with the preset water level to obtain the first comparison result;

[0163] The preset water level can be set to the door seal level; the door can be opened when the water level is below the door seal level. Alternatively, the preset water level can be set to 10% of the washing tub's water level.

[0164] Sub-step 3: Using the rules that match the first comparison result, control the electric gate opening and closing device.

[0165] An exemplary method for controlling the electric gate opening and closing device by employing a rule that matches the first comparison result is as follows:

[0166] When the water level is lower than the preset water level, power is supplied to the electric door switch device to trigger the electric door switch device to open the washing machine door;

[0167] When the water level is higher than or equal to the preset water level, the drainage program is started to drain the washing tub until the water level in the washing tub is lower than the preset water level and drainage stops. Then, the electric door switch is powered on to trigger the electric door switch to open the washing machine door.

[0168] An exemplary operating procedure is as follows: After the sensor detects that the user has triggered the washing machine door to open via a limb movement, the current running program is confirmed to determine the current state of the washing machine. If the current running program is a washing program, the following operations are performed:

[0169] Check if the water level in the washing tub is greater than A. If the water level is lower than A, open the door directly; if the water level is higher than A, activate the drain assembly and continuously monitor the water level in the tub until it falls below A before opening the door.

[0170] This alternative implementation method can effectively avoid the phenomenon of water flowing out of the washing machine drum caused by blindly opening the washing machine door.

[0171] Optionally, in one implementation of this embodiment, after determining the current state of the washing machine, if the washing machine is currently in the drum heating state, the following exemplary process can be executed, including the following sub-steps:

[0172] Sub-step 1: With the washing machine in the tub heating state, determine the first temperature inside the tub;

[0173] The washing tub can be heated in various ways, including but not limited to: the drying or steam care program being activated.

[0174] Sub-step 2: Compare the first temperature with the preset temperature to obtain the second comparison result;

[0175] Preferred, the preset temperature is set to 35℃. 0℃≤T≤35℃, this temperature range contains no water vapor, therefore the first temperature needs to be lower than the upper limit of this temperature range.

[0176] Sub-step 3: Use the rules that match the second comparison result to control the electric gate opening and closing device.

[0177] An exemplary method for controlling the electric gate opening and closing device by employing a rule that matches the second comparison result is as follows:

[0178] When the first temperature is lower than the preset temperature, power is supplied to the electric door switch device to trigger the electric door switch device to open the washing machine door;

[0179] When the second temperature is equal to or higher than the preset temperature, the preset operation is performed to cool down the washing tub until the temperature of the washing tub is lower than the preset temperature and the cooling stops. The electric door switch device is then powered on to trigger the electric door switch device to open the washing machine door.

[0180] A feasible process for performing preset operations to cool down the washing tub can be as follows: turn off the activated washing tub heating module and detect the initial temperature of the return air to obtain a first temperature; open the air duct spray valve to cool down the temperature inside the washing tub; detect the threshold of the return air temperature drop per unit time; determine the cooling time based on the first temperature, the preset temperature, and the threshold of the return air temperature drop per unit time, and output the cooling time to the user.

[0181] The time elapsed, t, can be calculated using the following formula: t = (T1 - T) / ΔT, where T1 is the initial return air temperature, T is the preset temperature, and ΔT is the threshold temperature drop per unit time. ΔT can be detected by a temperature sensor installed at the return air vent, and the detection method involves recording a single temperature value at equal intervals and then calculating the result.

[0182] An exemplary operating procedure is as follows: After the sensor detects that the user has triggered the washing machine door to open via a limb movement, the current running program is checked to determine the current status of the washing machine. If the current running program is a drying or steam care program, the following operations are performed:

[0183] Is the temperature inside the washing tub greater than T? If the temperature is lower than T, open the door directly; if the temperature is higher than T, turn off the drying or steam heating module, detect the return air starting temperature T1, open the air duct spray valve to cool the temperature inside the tub, detect the return air temperature drop threshold ΔT per unit time, and provide feedback on the door opening waiting time: t=(T1-T) / ΔT.

[0184] This strategy of optionally opening the washing machine door only after the temperature inside the washing tub has dropped to the preset temperature can prevent moisture from rushing out of the washing tub or the temperature from becoming too hot, thus avoiding discomfort for the user.

[0185] It should be noted that the above are merely examples of three strategies for controlling the opening of the washing machine door when the washing machine detects that the user has triggered the opening command of the washing machine door through a first limb under three working states. In actual implementation, those skilled in the art can flexibly set the corresponding washing machine door opening strategies for various states according to actual needs.

[0186] Optionally, in one implementation of this embodiment, when the electronic door switch device is a device composed of an electromagnetic sequence coil and two permanent magnets, after powering on the electronic door switch device to trigger it to open the washing machine door, the method further includes the following steps:

[0187] First, in the second mode, the third feedback signal of the first sensing device and the fourth feedback signal of the second sensing device are monitored.

[0188] In the second mode, the washing machine door can be closed based on a user's second limb movement. Similar to the first mode, the second mode can also be activated by a third sensor detecting the user's presence in front of the washing machine. Upon detection, a feedback signal is generated and sent to the washing machine control system, which then activates the second mode. Alternatively, the control system can automatically switch from the first mode to the second mode after the washing machine door is opened.

[0189] Secondly, determine the second interval between the received third feedback signal and the fourth feedback signal;

[0190] Finally, if the second interval duration matches the second duration, the electromagnetic coil is energized to close the door.

[0191] The second duration is the duration corresponding to the user-preset second limb action. The first limb action and the second limb action can be the same or different, and correspondingly, the first duration and the second duration can be the same or different. In this embodiment, there are no specific restrictions on the specific action indicated by the second limb action.

[0192] Optionally, in one implementation of this embodiment, when the electronic door switch device is a device composed of an electromagnetic sequence coil and two permanent magnets, after powering on the electronic door switch device to trigger it to open the washing machine door, the method further includes the following steps:

[0193] After the washing machine door is opened, it automatically switches from the first mode to the second mode. In the second mode, it determines whether feedback signals from the first, second, and third sensors are received within a third preset time period. If not, it determines that the user has left the washing machine and powers on the electromagnetic coil to close the door.

[0194] The third preset duration can be flexibly set by those skilled in the art. In this embodiment, no specific limitation is made. The third preset duration can be set to 5-10s, for example, the third preset duration can be set to 5s, 7s or 10s, etc.

[0195] In this alternative embodiment, feedback signals from three sensors can be combined to automatically identify whether the user has left the washing machine, and the door can be automatically closed after the user is confirmed to have left the washing machine, which can improve the user experience.

[0196] It should be noted that when the electric door opening and closing device is an electric push rod, the user can close the door manually.

[0197] According to an embodiment of this application, a method for controlling a washing machine door is further provided, referring to... Figure 6 The methods include:

[0198] S0: In standby mode, the auxiliary sensor continuously monitors and determines whether the auxiliary sensor provides a feedback signal.

[0199] By determining whether the additional sensor returns a signal, it can be confirmed whether the user is approaching the washing machine. Specifically, if the additional sensor returns a signal, it is determined that the user is approaching the washing machine; conversely, if the additional sensor does not return a signal, it is determined that the user is not approaching the washing machine.

[0200] In this embodiment, the door is opened by controlling a push rod motor; this implementation cannot achieve automatic door closing. The washing machine has three sensors, which can also be called three sensing devices. The accessory sensor is the third sensing device shown in the previous embodiment. The layout of the three sensing devices on the washing machine can be referred to... Figure 3 The additional sensor is located above half the height of the entire machine. This position is designed to monitor the height of adults, preventing minors, pets, or robot vacuums from misinterpreting the automatic door opening.

[0201] When the additional sensor is an infrared sensor, the infrared sensor provides feedback through an electrical signal; when the additional sensor is a vision sensor, the vision sensor provides feedback through image recognition.

[0202] S1: If an additional sensor feedback signal is received, the system will enter the user-activated automatic door opening mode.

[0203] The user-activated automatic door opening mode is the first mode.

[0204] S2: Determine whether infrared sensor 1 is sending a feedback signal;

[0205] S3: If yes, determine whether infrared sensor 2 sends a feedback signal.

[0206] If either infrared sensor 1 or infrared sensor 2 does not return a signal, the process needs to be restarted for re-monitoring. If both return signals, the subsequent steps are executed.

[0207] S4: Determine whether the interval T between the feedback signals of infrared sensor 1 and infrared sensor 2 is less than the first preset duration; if yes, execute S5; if no, return to execute S1.

[0208] S2-S4 are designed to allow users to operate hands-free. Users open the door by sweeping their legs. The direction of the sweeping motion can be customized by the user on the settings page according to their own usage habits. The sweeping motion is detected by two infrared sensors at the bottom. The control system receives a feedback signal for each infrared sensor. By comparing the interval T between the two infrared sensor feedback signals with the first preset duration ΔT, the system determines whether the user is using the sweeping motion to open the door.

[0209] Preferably, the value of ΔT is in the range of 2s to 5s. The judgment of the first preset time comparison can prevent minors, pets or robot vacuum cleaners from making misjudgments about automatic door opening.

[0210] S5: If the user's leg sweeping motion is detected as the door opening action, the push rod motor is powered on and the door is pushed open.

[0211] According to an embodiment of this application, a washing machine door control method is further provided, which controls an electromagnetic coil to open and close the door. This embodiment can realize automatic door opening and closing actions. (See also...) Figure 7 The methods include:

[0212] S0: In standby mode, the auxiliary sensor continuously monitors and determines whether the auxiliary sensor returns a signal;

[0213] In this embodiment, the washing machine is equipped with three sensors, the installation positions of which are as follows: Figure 3 As shown. In addition, the washing machine is also equipped with an electronically controlled door switch device consisting of an electromagnetic coil and at least two permanent magnets. The structure and installation position of this electronically controlled door switch device are as follows. Figure 4 , Figure 5 As shown, it will not be elaborated further here.

[0214] S1: If an additional sensor feedback signal is received, the system will enter the user-activated automatic door opening mode.

[0215] The user-activated automatic door opening mode is the first mode.

[0216] S2: Determine whether infrared sensor 1 is sending a feedback signal;

[0217] S3: If yes, determine whether infrared sensor 2 sends a feedback signal.

[0218] If either infrared sensor 1 or infrared sensor 2 does not return a signal, the process needs to be restarted for re-monitoring. If both return signals, the subsequent steps are executed.

[0219] S4: Determine whether the interval T between the feedback signals of infrared sensor 1 and infrared sensor 2 is less than the first preset duration; if yes, execute S5; if no, return to execute S1.

[0220] S2-S4 are designed to allow users to operate hands-free. Users open the door by sweeping their legs. The direction of the sweeping motion can be customized by the user on the settings page according to their own usage habits. The sweeping motion is detected by two infrared sensors at the bottom. The control system receives a feedback signal for each infrared sensor. By comparing the interval T between the two infrared sensor feedback signals with the first preset duration ΔT, the system determines whether the user is using the sweeping motion to open the door.

[0221] Preferably, the value of ΔT is in the range of 2s to 5s. The judgment of the first preset time comparison can prevent minors, pets or robot vacuum cleaners from making misjudgments about automatic door opening.

[0222] S5: If the user's leg sweeping motion is detected as the door opening action, the electromagnetic coil is energized, and the door opens.

[0223] See attached document Figure 4 , 4 As shown, when the door is closed, permanent magnet 1 approaches the electromagnetic coil; when the door is open, permanent magnet 2 approaches the electromagnetic coil; when the door moves from closing to opening, the electromagnetic coil is energized, causing the electromagnetic coil and permanent magnet 1 to repel each other, pushing the door open, and during the door opening process, permanent magnet 2 approaches the electromagnetic coil; when the door moves from opening to closing, the electromagnetic coil is energized, causing the electromagnetic coil and permanent magnet 2 to repel each other, closing the door, and during the door closing process, permanent magnet 1 approaches the electromagnetic coil.

[0224] Specifically, in S5, it is determined that the user's leg sweeping action opens the door. At this time, the electromagnetic coil is energized, forming a mutual repulsion with the permanent magnet 1, and the door is pushed open. After the door is pushed open, the permanent magnet 1 moves away from the electromagnetic coil, and the permanent magnet 2 moves closer to the electromagnetic coil.

[0225] S6: Enter the user-activated automatic door closing mode.

[0226] The user-activated automatic door closing mode is the second mode.

[0227] S7: Determine whether infrared sensor 1 has fed back a signal within a predetermined time; if not, proceed to S8; if yes, return to S6.

[0228] S8: Determine whether the infrared sensor 2 has fed back a signal within a predetermined time; if not, proceed to S9; if yes, return to S7.

[0229] S9: Determine whether the additional sensor has fed back a signal within a predetermined time; if not, proceed to S10; if yes, return to S6.

[0230] S7-S9 address scenarios where the user, holding the clothes, is unable to close the washing machine door after taking them out. In this case, the auxiliary sensor, infrared sensor 1, and infrared sensor 2 first detect signal feedback from the two infrared sensors located at the bottom. If no signal is output within a predetermined time, it checks whether the auxiliary sensor has provided feedback within the predetermined time. If no signal is received from either sensor, it is determined that the user has left the washing machine. The predetermined time range can be set to 5-10 seconds. After determining that the user has left the washing machine through the coordination of multiple sensors (S7-S9), S10 is executed.

[0231] S10: Energize the electromagnetic coil to close the door.

[0232] Once it is confirmed that the user has left the washing machine, the electromagnetic coil is energized and repulsed by the permanent magnet 2, causing the door to close. At this time, the permanent magnet 2 moves away from the electromagnetic coil, while the permanent magnet 1 moves closer to the electromagnetic coil.

[0233] The washing machine door control method provided in this application has several advantages. First, it allows users to open the washing machine door without using their hands, providing a better user experience. Second, compared with the prior art, the automatic door opening / closing mechanism reduces costs while enhancing the reliability of the mechanism's operation. Third, by combining the additional conditions for opening the door with sensor-based collaborative judgment, it greatly reduces accidental opening operations when not in the user's possession.

[0234] According to an embodiment of this application, a washing machine door control device is provided. This washing machine door control device is applied to a washing machine including a first sensing device, a second sensing device, and an electronically controlled door opening and closing device. (Refer to...) Figure 8 The washing machine door control device includes the following functional modules:

[0235] The first monitoring module 700 is used to monitor the first feedback signal of the first sensing device and the second feedback signal of the second sensing device in a first mode, wherein the washing machine door can be opened according to the user's first limb movement in the first mode;

[0236] The first determining module 702 is used to determine the first interval duration between the received first feedback signal and the second feedback signal;

[0237] The second determining module 704 is used to determine the current state of the washing machine when the first interval duration matches the first duration; wherein the first duration is the duration corresponding to the first limb action preset by the user;

[0238] The control module 706 is used to power on the electronic door switch device when the current state is a standby state, so as to trigger the electronic door switch device to open the washing machine door.

[0239] Optionally, in one implementation of this embodiment, the washing machine further includes a third sensing device, which further includes:

[0240] The second monitoring module is used to monitor the third feedback signal of the third sensing device before the first monitoring module monitors the first feedback signal of the first sensing device and the second feedback signal of the second sensing device.

[0241] The mode switching module is used to enter the first mode when the third feedback signal is detected, wherein the washing machine door is opened according to the user's action in the first mode.

[0242] Optionally, in one implementation of this embodiment, the first sensing device and the second sensing device are disposed in a preset area on the front of the washing machine; wherein, the preset area is the front area of ​​the washing machine that is less than half the height of the entire machine; and the third sensing device is disposed at the end of the front of the washing machine.

[0243] Optionally, in one implementation of this embodiment, the apparatus further includes:

[0244] A water level determination module is used to determine the first water level in the washing tub of the washing machine when the washing machine is in the washing state.

[0245] The first comparison module is used to compare the first water level with the preset water level to obtain the first comparison result;

[0246] The first control module is used to control the electric door opening and closing device by adopting a rule that matches the first comparison result.

[0247] Optionally, in one implementation of this embodiment, the first control module includes:

[0248] The first submodule is used to power on the electronic door switch device when the water level is lower than the preset water level, so as to trigger the electronic door switch device to open the washing machine door.

[0249] The second submodule is used to start the drainage program to drain the washing tub when the water level is higher than or equal to the preset water level, until the water level in the washing tub is lower than the preset water level and the drainage stops, and to power on the electronic door switch device to trigger the electronic door switch device to open the washing machine door.

[0250] Optionally, in one implementation of this embodiment, the apparatus further includes:

[0251] A temperature determination module is used to determine a first temperature inside the washing tub when the washing tub is in a heated state at the washing machine.

[0252] The second comparison module is used to compare the first temperature with the preset temperature to obtain a second comparison result.

[0253] The second control module is used to control the electric gate opening and closing device by adopting a rule that matches the second comparison result.

[0254] Optionally, in one implementation of this embodiment, the second control module includes:

[0255] The third submodule is used to power on the electronic door switch device when the first temperature is lower than the preset temperature, so as to trigger the electronic door switch device to open the washing machine door.

[0256] The fourth submodule is used to perform a preset operation to cool down the washing tub when the second temperature is equal to or higher than the preset temperature, until the temperature of the washing tub is lower than the preset temperature and the cooling stops, and to power on the electronic door switch device to trigger the electronic door switch device to open the washing machine door.

[0257] Optionally, in one implementation of this embodiment, when the fourth submodule performs a preset operation to cool the washing tub, it is specifically used for:

[0258] Turn off the heated washing tub module that has been turned on, and detect the initial temperature of the return air to obtain the first temperature;

[0259] Open the air duct spray valve to cool down the temperature inside the washing tub;

[0260] Detect the threshold for the decrease in return air temperature per unit time;

[0261] Based on the first temperature, the preset temperature, and the return air temperature drop threshold per unit time, the cooling time is determined and output to the user.

[0262] Optionally, in one implementation of this embodiment, the electrically controlled door switch device is a push rod motor; the push rod motor is located on the area where the edge of the washing machine tub overlaps with the door.

[0263] Optionally, in one implementation of this embodiment, the electrically controlled door switch device includes: an electromagnetic coil, a first permanent magnet, and a second permanent magnet;

[0264] The electromagnetic coil is disposed on the hinge connecting the edge of the washing machine tub and the door.

[0265] The first permanent magnet and the second permanent magnet are respectively disposed on both sides of the electromagnetic coil;

[0266] When the electromagnetic coil is energized, it repels the first permanent magnet, the door is opened, and the distance between the second permanent magnet and the electromagnetic coil decreases.

[0267] When the electromagnetic coil is energized again, it repels the second permanent magnet, the door is closed, and the distance between the first permanent magnet and the electromagnetic coil decreases.

[0268] Optionally, in one implementation of this embodiment, after the step of powering on the electronically controlled door switch device to trigger it to open the washing machine door, the device further includes:

[0269] The third monitoring module is used to monitor the third feedback signal of the first sensing device and the fourth feedback signal of the second sensing device in the second mode, wherein the washing machine door can be closed according to the user's second limb movement in the second mode;

[0270] The duration determination module is used to determine the second interval duration between the received third feedback signal and the fourth feedback signal;

[0271] The power-on module is used to power on the electromagnetic coil to close the door when the second interval duration matches the second duration, wherein the second duration is the duration corresponding to the second limb action preset by the user.

[0272] about Figure 8 For a more detailed description of the relevant operations, please refer to the description in the method embodiments above, which will not be repeated here.

[0273] One embodiment of the present invention also provides a product implementing various method embodiments of the present invention. This product can be a computer software product, or an electronic device or hardware product that has the computer software product installed or integrated. The electronic device has at least two sensing devices and an electronically controlled door switch device disposed on its outer surface. Preferably, the electronic device is a washing machine. The washing machine can execute the methods shown in any of the above method embodiments to control the washing machine door. The washing machine may also be equipped with the washing machine door control device shown in the above device embodiments to control the washing machine door.

[0274] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0275] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0276] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.

[0277] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0278] It should be understood that various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0279] Those skilled in the art will understand that all or part of the steps of the methods described in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it includes one or a combination of the steps of the method embodiments.

[0280] Furthermore, the functional units in the various embodiments of this application can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0281] The storage medium mentioned above can be a read-only memory, a disk, or an optical disk, etc. Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A method for controlling the door of a washing machine, characterized in that, The method is applied to a washing machine equipped with a first sensing device, a second sensing device, and an electronically controlled door opening and closing device, and the method includes: Monitoring steps: Monitor the first feedback signal of the first sensing device and the second feedback signal of the second sensing device, wherein the first sensing device and the second sensing device are used to detect the user's lower limb movements in combination; Based at least on the signal feedback from the first and second sensing devices and the current state of the washing machine, the operation of the electronic door opening and closing device is controlled to control the state of the washing machine door. The method further includes: The monitoring step is performed in response to a trigger signal, wherein the trigger signal includes: Feedback signal from a third sensing device, which is positioned above the first and second sensing devices, for detecting the user's upper limbs, and / or... A washing machine status signal is generated based on the current state of the washing machine, indicating that the washing machine door is allowed to change its state. The monitoring steps performed in response to a trigger signal include: The monitoring step is performed in response to a feedback signal sent by the third sensing device indicating that a user's upper limb has been detected; and / or, The monitoring steps are performed in response to a feedback signal sent by the third sensing device indicating that no user's upper limb has been detected for a set duration.

2. The method according to claim 1, characterized in that: The first sensing device and the second sensing device are disposed in a first preset area on the front of the washing machine and are spaced apart along the width direction of the front of the washing machine. The first preset area is the front area of ​​the washing machine that is less than half the height of the entire machine and corresponds to the user's legs and / or feet. The third sensing device is located at a position above half the height of the washing machine, corresponding to the user's upper limbs.

3. The method according to claim 1, characterized in that, The current state of the washing machine includes the operating state of the washing machine and the state of the washing machine door. The signal feedback status of the first sensing device and the second sensing device includes the time interval between the first feedback signal and the second feedback signal, and / or the duration during which at least one of the first sensing device and the second sensing device has not continuously provided a corresponding feedback signal. The step of controlling the operation of the electronic door opening and closing device based at least on the signal feedback from the first and second sensing devices and the current state of the washing machine includes: When the operating state is standby, the door is closed, and the time interval is less than a first duration, the electronic door switch device is controlled to open the washing machine door, and / or... When the operating state is standby, the door state is open, and the no-feedback period exceeds a second duration, the electronic door switch device is controlled to close the washing machine door, and / or, When the operating state is an openable state, the door is closed, and the time interval is less than a first duration, the electronic door switch device is controlled to open the washing machine door. And / or, When the operating state is a non-openable state, the door is closed, and the time interval is less than a first duration, the electronic door switch device is controlled to keep the washing machine door closed.

4. The method according to claim 1, characterized in that, The current state of the washing machine includes the environmental state of the washing machine and the state of the washing machine door. The signal feedback from the first and second sensing devices includes the time interval between the first feedback signal and the second feedback signal; The step of controlling the operation of the electronic door opening and closing device to control the state of the washing machine door, based at least on the signal feedback from the first and second sensing devices and the current state of the washing machine, includes: If the door is closed and the time interval is less than a first duration, and if the environmental conditions meet the door opening conditions, then the electronic door switch device is controlled to open the washing machine door, and / or... If the door is closed and the time interval is less than a first duration, and the environmental conditions do not meet the conditions for opening the door, then the electronic door switch device is controlled to keep the washing machine door closed.

5. The method according to claim 4, characterized in that, The environmental conditions include: the drum temperature and the water level inside the washing machine; The environmental conditions do not meet the conditions for opening the door, including: the temperature inside the cylinder exceeds a temperature threshold and / or the water level inside the cylinder exceeds a water level threshold.

6. The method according to claim 5, characterized in that, The method further includes: If the environmental conditions do not meet the door opening conditions, an environmental state change strategy and a corresponding strategy duration are generated based on the environmental conditions and the operating state of the washing machine. The environmental state change strategy is used to make the environmental conditions meet the door opening conditions. Output at least one of the policy duration and the environmental state change policy to the user in order to obtain user confirmation; After obtaining user confirmation, the environment state change strategy is executed.

7. The method according to claim 6, characterized in that, When the environmental conditions do not meet the door opening requirements, an environmental state change strategy and a corresponding strategy duration are generated based on the environmental conditions and the operating state of the washing machine, including: If the water level inside the drum exceeds a water level threshold, a drainage strategy and corresponding drainage duration are generated based on the water level inside the drum and the operating status of the washing machine, and / or, If the temperature inside the drum exceeds a temperature threshold, a cooling strategy and a corresponding cooling duration are generated based on the temperature inside the drum and the operating status of the washing machine. The washing machine's operating state includes a non-stop phase and a stopable phase. When the washing machine is in the non-stop phase, the environmental state change strategy includes the execution process of the non-stop phase, and the strategy duration includes the remaining duration of the non-stop phase and one of the drainage duration and the cooling duration. When the washing machine is in the stopable phase, the environmental state change strategy includes a first strategy of continuing to execute the stopable phase and a second strategy of terminating the stopable phase.

8. The method according to claim 1, characterized in that, The current state of the washing machine includes the water level inside the drum during the washing program. Controlling the operation of the electronic door opening / closing device to control the state of the washing machine door, based at least on the signal feedback from the first and second sensors and the current state of the washing machine, includes: If it is determined that the user has a need to open the door based on the signal feedback from the first and second sensing devices, the water level in the cylinder is compared with the water level threshold to obtain the first comparison result. The electric gate opening and closing device is controlled by using a rule that matches the first comparison result.

9. The method according to claim 8, characterized in that, The step of controlling the electric door opening and closing device using a rule that matches the first comparison result includes: When the water level in the drum is lower than the water level threshold, the electronic door switch device is powered on to trigger the electronic door switch device to open the washing machine door; When the water level in the drum is higher than or equal to the threshold water level, the drainage program is started to drain the washing tub of the washing machine until the water level in the drum is lower than the threshold water level. Then, the electronic door switch device is powered on to trigger the electronic door switch device to open the washing machine door.

10. The method according to claim 1, characterized in that, The current state of the washing machine includes the drum temperature during the drying program. Controlling the operation of the electronic door opening / closing device to control the state of the washing machine door, based at least on the signal feedback from the first and second sensors and the current state of the washing machine, includes: If it is determined that the user has a need to open the door based on the signal feedback from the first and second sensing devices, the temperature inside the cylinder is compared with the temperature threshold to obtain a second comparison result. The electric gate opening and closing device is controlled by using a rule that matches the second comparison result.

11. The method according to claim 10, characterized in that, The step of controlling the electric door opening and closing device by adopting a rule that matches the second comparison result includes: When the temperature inside the drum is lower than the temperature threshold, power is applied to the electronically controlled door switch device to trigger it to open the washing machine door. When the temperature inside the drum is equal to or higher than the temperature threshold, a preset operation is performed to cool down the washing tub of the washing machine until the temperature inside the drum is lower than the temperature threshold. Then, the electric door switch device is powered on to trigger the electric door switch device to open the washing machine door.

12. The method according to claim 11, characterized in that, The step of performing a preset operation to cool down the washing tub of the washing machine includes: Turn off the heated washing tub module that has been turned on, and detect the initial temperature of the return air to obtain the first temperature; The air duct spray valve is opened to cool down the temperature inside the washing tub of the washing machine; Detect the threshold for the decrease in return air temperature per unit time; Based on the first temperature, the temperature threshold, and the return air temperature drop threshold per unit time, the cooling time is determined and output to the user.

13. The method according to claim 1, characterized in that, The electrically controlled door switch device is a push rod motor; The push rod motor is located on the area where the edge of the washing tub overlaps with the door of the washing machine.

14. The method according to claim 1, characterized in that, The electrically controlled door switch device includes: an electromagnetic coil, a first permanent magnet, and a second permanent magnet; The electromagnetic coil is disposed on the hinge connecting the edge of the washing machine tub and the door. The first permanent magnet and the second permanent magnet are respectively disposed on both sides of the electromagnetic coil; When the electromagnetic coil is energized, it repels the first permanent magnet, the door is opened, and the distance between the second permanent magnet and the electromagnetic coil decreases. When the electromagnetic coil is energized again, it repels the second permanent magnet, the door is closed, and the distance between the first permanent magnet and the electromagnetic coil decreases.

15. The method according to claim 14, characterized in that, After the step of energizing the electronically controlled door switch device to trigger it to open the washing machine door, the method further includes: In the second mode, the third feedback signal of the first sensing device and the fourth feedback signal of the second sensing device are monitored. In the second mode, the washing machine door can be closed based on the user's second limb movement. Determine the second interval duration between the received third feedback signal and the fourth feedback signal; When the second interval duration matches the second duration, the electromagnetic coil is energized to close the door, wherein the second duration is the duration corresponding to the second limb action preset by the user.

16. The method according to claim 1, characterized in that, The method further includes: Based on the signal feedback from the first and second sensing devices, and the detection result from the third sensing device, it is determined whether the warning conditions are met. If the aforementioned warning conditions are met, then a warning message is output. The conditions for meeting the warning include: the third sensing device does not detect the upper limbs, the first sensing device and the second sensing device detect the user's lower limb movements, and the warning information includes: information related to the child's operation. When both the first and second sensors are located below the washing machine door, the conditions for meeting the warning include: when the washing machine door is open, the third sensor does not detect an upper limb, and at least one of the first and second sensors continuously provides signal feedback for more than a set time. The warning information includes: the door cannot be closed or clothing is obstructing the view.

17. An electronic device, characterized in that, The electronic device includes: Memory, used to store one or more computer instructions; A processor for invoking and executing the computer instructions to implement the method as described in any one of claims 1-16.

18. A washing machine, characterized in that, The washing machine is equipped with a first sensing device, a second sensing device, and an electronically controlled door switch device. The first sensing device and the second sensing device are used to detect the user's lower limb movements in combination, and the electronically controlled door switch device is used to control the state of the washing machine door. The washing machine adopts the method as described in any one of claims 1-16, or has the electronic equipment as described in claim 17.

19. The washing machine according to claim 18, characterized in that, The washing machine also includes a feedback signal from a third sensing device; The third sensing device is positioned above the first and second sensing devices and is used to detect the user's upper limbs; and / or, The first sensing device and the second sensing device are disposed in a first preset area on the front of the washing machine and are spaced apart along the width direction of the front of the washing machine. The first preset area is the front area of ​​the washing machine that is less than half the height of the whole machine and corresponds to the user's legs and / or feet. Alternatively, the first sensing device and the second sensing device are both located below the washing machine door. The electrically controlled door switch is a push rod motor; the push rod motor is located on the area where the edge of the washing tub overlaps with the door of the washing machine; the electrically controlled door switch includes: an electromagnetic coil, a first permanent magnet, and a second permanent magnet; the electromagnetic coil is located on the hinge connecting the edge of the washing tub and the door; the first permanent magnet and the second permanent magnet are respectively located on both sides of the electromagnetic coil; when the electromagnetic coil is energized, it repels the first permanent magnet, the door is opened, and the distance between the second permanent magnet and the electromagnetic coil decreases; when the electromagnetic coil is energized again, it repels the second permanent magnet, the door is closed, and the distance between the first permanent magnet and the electromagnetic coil decreases.

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