Washing machine and method for controlling same

Abstract

The present invention relates to a washing machine and a method for controlling same. The washing machine of the present invention comprises: a tub; a water supply pipe for supplying water to the tub; a water supply valve that is provided in the water supply pipe and controls the supply of water; a flow rate sensor that is provided in the water supply pipe and senses the amount of water flowing in the water supply pipe; a water level sensor for sensing the water level in the tub; and a processor which recognizes a conversion constant of the flow rate sensor on the basis of first sensing information received from the water level sensor and second sensing information received from the flow rate sensor, and recognizes the actual amount of water being supplied to the tub on the basis of the recognized conversion constant and the second sensing information.

Description

Washing machine and its control method

[0001] The present invention relates to a washing machine and a control method thereof for accurately recognizing the amount of water supplied to a tub.

[0002] Washing machines perform a washing cycle that separates contaminants from laundry using water containing detergent, a rinsing cycle that removes contaminants or residual detergent from laundry using water not containing detergent, a spin-drying cycle that removes water from laundry, and a draining cycle that discharges water inside the tub to the outside during the washing cycle, rinsing cycle, and spin-drying cycle.

[0003] These washing machines use a water level sensor or flow sensor to detect the amount of water supplied to the tub during the wash and rinse cycles.

[0004] A water level sensor detects the water level within the tub. However, this sensor has a problem: it cannot accurately detect the amount of water supplied to the tub when water seeps into the laundry cloths contained within the drum.

[0005] The flow sensor includes an impeller that rotates with the water flowing in the water supply pipe. The washing machine detects the amount of water supplied to the tub based on the pulses generated by the rotation of the impeller of the flow sensor. The output of the impeller of the flow sensor can vary depending on changes in the pressure of the water flowing in the water supply pipe. In this case, the washing machine has a problem in accurately detecting the amount of water supplied to the tub when the pressure of the water flowing in the water supply pipe changes.

[0006] One aspect of the disclosed invention provides a washing machine and a control method thereof that recognizes the amount of water supplied to a tub based on first detection information detected by a water level sensor and second detection information detected by a flow rate sensor.

[0007] According to one aspect of the disclosed invention, a washing machine includes: a tub; a water supply pipe for supplying water to the tub; a water supply valve provided in the water supply pipe and controlling the supply of water; a flow sensor provided in the water supply pipe and detecting the amount of water flowing in the water supply pipe; a water level sensor for detecting the water level of the tub; and a processor for recognizing a conversion constant of the flow sensor based on first detection information received from the water level sensor and second detection information received from the flow sensor, and recognizing an actual amount of water supplied to the tub based on the recognized conversion constant and the second detection information.

[0008] The processor of the washing machine according to one aspect recognizes the conversion constant of the flow sensor during the water supply of the washing cycle.

[0009] According to one aspect, a washing machine further includes a memory storing information on a conversion constant for each water pressure. According to one aspect, a processor of the washing machine recognizes a water level of a tub based on first sensing information during water supply, recognizes a water supply time based on the recognized water level reaching a reference water level, recognizes a water pressure of a water supply pipe based on the recognized water supply time and second sensing information, and recognizes a conversion constant corresponding to the recognized water pressure based on information in the memory.

[0010] According to one aspect, the washing machine further includes an output unit. The processor of the washing machine according to one aspect determines whether the water pressure of the water supply pipe is normal based on the recognized water pressure and the reference water pressure, and controls the output unit to output information about the abnormality based on whether the water pressure of the water supply pipe is recognized as abnormal.

[0011] According to one aspect, the washing machine further includes an output unit. The processor of the washing machine according to one aspect controls the output unit to output information about the recognized water pressure.

[0012] A washing machine according to one aspect further includes a drum provided within a tub and rotatable within the tub; the reference water level is the height from the lowest section of the tub to the lowest section of the drum.

[0013] The processor of the washing machine according to one aspect obtains a difference in water pressure between the recognized water pressure and the preset water pressure, and recognizes a conversion constant corresponding to the preset water pressure based on information stored in the memory based on the water pressure difference being less than or equal to the preset value.

[0014] A processor of a washing machine according to one aspect obtains a water pressure difference value between a recognized water pressure and a preset water pressure, obtains a correlation function for first sensing information and second sensing information during water supply based on the water pressure difference value exceeding the preset value, and recognizes a conversion constant based on the obtained correlation function.

[0015] According to one aspect, the memory of the washing machine stores the conversion constants updated during the previous washing operation. According to one aspect, the processor of the washing machine obtains a constant difference value between the conversion constants recognized by the correlation function and the conversion constants stored in the memory, and maintains the storage of the conversion constants stored in the memory based on whether the obtained constant difference value is less than a reference value.

[0016] The processor of the washing machine according to one aspect updates the conversion constant stored in the memory with the conversion constant recognized by the correlation function based on the fact that the obtained constant difference value is greater than or equal to a reference value.

[0017] According to one aspect, the washing machine further includes a drain pipe provided at the bottom of the tub; and a drain pump provided in the drain pipe. According to one aspect, the washing machine has a water level sensor connected to the drain pipe and detects the water levels in the drain pipe and the tub.

[0018] A processor of a washing machine according to one aspect recognizes the water level of a tub based on first detection information received from a water level sensor during water supply of a washing cycle, obtains a correlation function for the first detection information and the second detection information based on the recognized water level reaching a reference water level, and recognizes a conversion constant based on the obtained correlation function.

[0019] According to one aspect, the memory of the washing machine stores the conversion constants updated during the previous washing operation. According to one aspect, the processor of the washing machine obtains a constant difference value between the conversion constants recognized by the correlation function and the conversion constants stored in the memory, and maintains the storage of the conversion constants stored in the memory based on the obtained constant difference value being less than a reference value, and updates the conversion constants stored in the memory to the conversion constants recognized by the correlation function based on the obtained constant difference value being greater than or equal to the reference value.

[0020] A control method of a washing machine according to another aspect controls the opening of a water supply valve based on the reception of an operation start command, recognizes a conversion constant of a flow sensor based on first detection information received from a water level sensor during water supply to a tub and second detection information received from a flow sensor, recognizes an actual water supply amount supplied to the tub based on the recognized conversion constant and the second detection information, and controls water supply during a washing cycle or a rinsing cycle based on the recognized actual water supply amount.

[0021] Recognizing the conversion constant includes recognizing the water level of the tub based on first sensing information during water supply, recognizing the water supply time based on the recognized water level reaching a reference water level, recognizing the water pressure of the water supply pipe based on the recognized water supply time and second sensing information, and recognizing the conversion constant corresponding to the recognized water pressure based on information about the conversion constant for each water pressure stored in the memory. The reference water level is the height from the lowest section of the tub to the lowest section of the drum provided within the tub.

[0022] A method for controlling a washing machine according to another aspect further includes controlling an output unit to output information on recognized water pressure, recognizing whether the water pressure of a water supply pipe is normal based on the recognized water pressure and a reference water pressure, and controlling the output unit to output information on the abnormality based on the water pressure of the water supply pipe being recognized as abnormal.

[0023] Recognizing the conversion constant includes recognizing the water level of the tub based on first sensing information during water supply, recognizing the water supply time based on the recognized water level reaching a reference water level, recognizing the water pressure of the water pipe based on the recognized water supply time and second sensing information, obtaining a water pressure difference value between the recognized water pressure and a preset water pressure, and recognizing the conversion constant corresponding to the preset water pressure based on information about the water pressure-specific conversion constant stored in the memory based on the water pressure difference value being equal to or less than the preset value.

[0024] A control method of a washing machine according to another aspect comprises: obtaining a correlation function for first sensing information and second sensing information based on a water pressure difference exceeding a preset value; recognizing a conversion constant based on the obtained correlation function; obtaining a constant difference value between the conversion constant recognized by the correlation function and the conversion constant stored in a memory; maintaining storage of the conversion constant stored in the memory based on the obtained constant difference value being less than a reference value; and updating the conversion constant stored in the memory to the conversion constant recognized by the correlation function based on the obtained constant difference value being greater than or equal to the reference value.

[0025] Recognizing the conversion constant includes recognizing the water level of the tub based on first detection information received from a water level sensor during water supply of a washing cycle, obtaining a correlation function for the first detection information and the second detection information based on the recognized water level reaching a reference water level, and recognizing the conversion constant based on the obtained correlation function.

[0026] A control method of a washing machine according to another aspect further includes obtaining a constant difference value between a conversion constant recognized by a correlation function and a conversion constant stored in a memory, maintaining storage of the conversion constant stored in the memory based on the obtained constant difference value being less than a reference value, and updating the conversion constant stored in the memory to the conversion constant recognized by the correlation function based on the obtained constant difference value being greater than or equal to the reference value.

[0027] According to the disclosed invention, the disclosed invention can improve the accuracy of recognizing the amount of water because it recognizes the amount of water supplied to the tub based on at least one of the first detection information detected by the water level sensor, the second detection information detected by the flow rate sensor, and the water supply time.

[0028] The disclosed invention recognizes water pressure based on a correlation table of water level and flow rate, and recognizes the amount of water supplied to the tub based on the recognized water pressure, first detection information detected by the water level sensor, and second detection information detected by the flow rate sensor, so that the accuracy of recognizing the amount of water can be improved.

[0029] The disclosed invention can improve water supply control performance by accurately recognizing the amount of water supplied to the tub, thereby optimizing washing time and water usage.

[0030] The disclosed invention can improve the accuracy of water content recognition based on the amount of water supplied to the tub and the water level in the tub. This allows for accurate recognition of the type of laundry, and further enables operation using an optimal washing cycle. Accordingly, the disclosed invention can also improve washing performance.

[0031] The present invention can improve the safety of a washing machine, improve the quality and marketability of the washing machine, and further secure the competitiveness of the washing machine.

[0032] Figure 1 is an internal example diagram of a washing machine according to one embodiment.

[0033] Figure 2 is an exemplary view of the exterior of a washing machine according to one embodiment.

[0034] Figure 3 is an example diagram of sensors provided in a washing machine according to one embodiment.

[0035] Figure 4 is an exemplary diagram of a water level sensor provided in a washing machine according to one embodiment.

[0036] Figure 5 is an example diagram of the arrangement of a flow sensor provided in a washing machine according to one embodiment.

[0037] Figure 6 is a structural example of a flow sensor provided in a washing machine according to one embodiment.

[0038] Figure 7 is a control configuration diagram of a washing machine according to one embodiment.

[0039] Figure 8 is an example of a display of a display unit of a washing machine according to one embodiment.

[0040] FIG. 9 is an exemplary diagram of a table stored in a washing machine according to one embodiment.

[0041] Figure 10 is a control flowchart of a washing machine according to one embodiment.

[0042] Figure 11 is a control configuration diagram of a washing machine according to another embodiment.

[0043] Fig. 12 is a graph of the water level by pulse number of the flow sensor of a washing machine according to another embodiment.

[0044] Figure 13 is a control flowchart of a washing machine according to another embodiment.

[0045] Figure 14 is a control configuration diagram of a washing machine according to another embodiment.

[0046] Figure 15 is a control flowchart of a washing machine according to another embodiment.

[0047] It should be understood that the various embodiments and terms used in this document are not intended to limit the technical features described in this document to specific embodiments, but rather to include various modifications, equivalents, or substitutes of the embodiments.

[0048] In connection with the description of the drawings, similar reference numerals may be used for similar or related components.

[0049] The singular form of a noun corresponding to an item may include one or more of said items, unless the relevant context clearly indicates otherwise.

[0050] In this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" may include any one of the items listed together in that phrase, or all possible combinations thereof.

[0051] The term "and / or" includes any combination of a plurality of related described elements or any one of a plurality of related described elements.

[0052] Terms such as "first," "second," or "first" or "second" may be used simply to distinguish one component from another and do not qualify the components in any other respect (e.g., importance or order).

[0053] When a component (e.g., a first component) is referred to as being "coupled" or "connected" to another component (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0054] The terms "include" or "have" are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in this document, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0055] When a component is said to be “connected,” “coupled,” “supported,” or “in contact with” another component, this includes not only cases where the components are directly connected, coupled, supported, or in contact, but also cases where the components are indirectly connected, coupled, supported, or in contact through a third component.

[0056] When we say that a component is "on" another component, this includes not only cases where the component is in contact with the other component, but also cases where there is another component between the two components.

[0057] Washing machines according to various embodiments can perform washing, rinsing, spin-drying, and drying processes. A washing machine is an example of a clothing treatment device, and the term "clothing treatment device" encompasses devices that wash clothing (laundry items, drying items), devices that dry clothing, and devices that can perform both washing and drying of clothing.

[0058] Washing machines according to various embodiments may include top-loading washing machines in which a laundry inlet for loading or withdrawing laundry is provided facing upward, or front-loading washing machines in which a laundry inlet is provided facing forward. Washing machines according to various embodiments may include washing machines of other loading methods other than top-loading washing machines and front-loading washing machines.

[0059] In the case of a top-loading washing machine, laundry can be washed using a water current generated by a rotating body such as a pulsator. In the case of a front-loading washing machine, laundry can be washed by rotating the drum to repeatedly raise and lower the laundry. The front-loading washing machine may include a washing machine with a dryer that can dry the laundry contained inside the drum. The washing machine with a dryer may include a hot air supply device for supplying high-temperature air into the drum and a condensation device for removing moisture from the air discharged from the drum. For example, the washing machine with a dryer may include a heat pump device. The washing machine according to various embodiments may include a washing machine with a washing method other than the washing method described above.

[0060] Washing machines according to various embodiments may include a housing that accommodates various components therein. The housing may be provided in the form of a box with a laundry bag inlet formed on one side.

[0061] A washing machine may include a door for opening and closing the laundry inlet. The door may be rotatably mounted to the housing by a hinge. At least a portion of the door may be transparent or translucent to allow the interior of the housing to be viewed.

[0062] A washing machine may include a tub provided within a housing to store water. The tub may be provided in a generally cylindrical shape with a tub opening formed on one side, and may be positioned within the housing such that the tub opening corresponds to a laundry inlet.

[0063] The tub may be connected to the housing by a damper. The damper can absorb vibrations generated when the drum rotates, thereby reducing the vibrations transmitted to the housing.

[0064] The washing machine may include a drum configured to accommodate laundry.

[0065] The drum may be positioned within the tub such that the drum opening provided on one side corresponds to the laundry bag inlet and the tub opening. Laundry bags may be sequentially passed through the laundry bag inlet, the tub opening, and the drum opening to be accommodated within the drum or taken out from the drum.

[0066] The drum rotates within the tub and can perform each of the washing, rinsing, and / or dehydration operations. The cylindrical wall of the drum is formed with a number of perforations, allowing water stored in the tub to flow into or out of the drum.

[0067] A washing machine may include a drive device configured to rotate a drum. The drive device may include a drive motor and a rotating shaft for transmitting driving force generated by the drive motor to the drum. The rotating shaft may be connected to the drum by penetrating the tub.

[0068] The driving device can rotate the drum forward or backward to perform each operation according to the washing, rinsing, and / or dehydration, or drying cycle.

[0069] A washing machine may include a water supply device configured to supply water to a tub. The water supply device may include a water supply pipe and a water supply valve provided on the water supply pipe. The water supply pipe may be connected to an external water source. The water supply pipe may extend from the external water source to a detergent supply device and / or the tub. Water may be supplied to the tub via the detergent supply device. Water may be supplied to the tub without passing through the detergent supply device.

[0070] The water supply valve can open or close the water supply pipe in response to an electrical signal from the control unit. The water supply valve can allow or block the supply of water to the tub from an external water source. The water supply valve may include, for example, a solenoid valve that opens and closes in response to an electrical signal.

[0071] A washing machine may include a detergent supply device configured to supply detergent to the tub. The detergent supply device may include a manual detergent supply device that requires the user to add detergent for each wash cycle, and an automatic detergent supply device that stores a large quantity of detergent and automatically supplies a predetermined amount of detergent during the wash cycle. The detergent supply device may include a detergent compartment for storing detergent. The detergent supply device may be configured to supply detergent into the tub during the water supply process.

[0072] Water supplied through the water supply pipe can be mixed with detergent via the detergent supply device. The water mixed with detergent can be supplied to the interior of the tub. Detergent is a comprehensive term used to refer to pre-wash detergent, main wash detergent, fabric softener, bleach, etc., and the detergent compartment can be divided into a pre-wash detergent storage area, a main wash detergent storage area, a fabric softener storage area, and a bleach storage area.

[0073] A washing machine may include a drainage device configured to discharge water contained in a tub to the outside. The drainage device may include a drain pipe extending from the bottom of the tub to the outside of the housing, a drain valve provided in the drain pipe to open and close the drain pipe, and a pump provided on the drain pipe. The pump may pump water in the drain pipe to the outside of the housing.

[0074] The washing machine may include a control panel positioned on one side of the housing. The control panel may provide a user interface for a user to interact with the washing machine. The user interface may include at least one input interface and at least one output interface.

[0075] At least one input interface can convert sensory information received from a user into an electrical signal.

[0076] At least one input interface may include a power button, an operation button, a course selection dial (or course selection button), and a wash / rinse / spin setting button.

[0077] At least one input interface may include, for example, a tact switch, a push switch, a slide switch, a toggle switch, a micro switch, a touch switch, a touch pad, a touch screen, a jog dial, and / or a microphone.

[0078] At least one output interface can visually or audibly convey information related to the operation of the washing machine to the user.

[0079] For example, at least one output interface may transmit information related to the washing cycle and operating time of the washing machine, as well as washing / rinsing / spin settings to the user. Information related to the operation of the washing machine may be output via a screen, indicator, voice, etc. At least one output interface may include, for example, a liquid crystal display (LCD) panel, a light emitting diode (LED) panel, a speaker, etc.

[0080] The washing machine may include a communication module for communicating with external devices via wires and / or wirelessly.

[0081] The communication module may include at least one of a short-range communication module or a long-range communication module.

[0082] The communication module can transmit data to or receive data from external devices (e.g., a server, a user device, and / or a home appliance). For example, the communication module can establish communication with a server, a user device, and / or a home appliance, and transmit and receive various data.

[0083] To this end, the communication module may support the establishment of a direct (e.g., wired) communication channel or a wireless communication channel between external devices, and the performance of communication through the established communication channel. According to one embodiment, the communication module may include a wireless communication module (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module (e.g., a local area network (LAN) communication module, or a power line communication module).

[0084] Any of these communication modules may communicate with an external device via a first network (e.g., a short-range communication network such as Bluetooth, WiFi (wireless fidelity) direct, or IrDA (infrared data association)) or a second network (e.g., a long-range communication network such as a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a local area network or a wide area network)). These various types of communication modules may be integrated into a single component (e.g., a single chip) or implemented as multiple separate components (e.g., multiple chips).

[0085] The short-range wireless communication module may include, but is not limited to, a Bluetooth communication module, a BLE (Bluetooth Low Energy) communication module, a near field communication module, a WLAN (Wi-Fi) communication module, a Zigbee communication module, an infrared (IrDA, infrared Data Association) communication module, a WFD (Wi-Fi Direct) communication module, an UWB (ultrawideband) communication module, an Ant+ communication module, a microwave (uWave) communication module, etc.

[0086] The long-distance communication module may include a communication module that performs various types of long-distance communication and may include a mobile communication unit. The mobile communication unit transmits and receives wireless signals with at least one of a base station, an external terminal, and a server on a mobile communication network.

[0087] In one embodiment, the communication module can communicate with external devices such as servers, user devices, and other home appliances through surrounding access points (APs).

[0088] An access point (AP) can connect the local area network (LAN) where the washing machine or user device is connected to the wide area network (WAN) where the server is connected. The washing machine or user device can then connect to the server via the wide area network (WAN).

[0089] The control unit can control various components of the washing machine (e.g., a drive motor, a water inlet valve). The control unit can control various components of the washing machine to perform at least one cycle, including water supply, washing, rinsing, and / or spin-drying, based on user input. For example, the control unit can control the drive motor to adjust the rotation speed of the drum, or control the water inlet valve of the water supply device to supply water to the tub.

[0090] The control unit may include hardware such as a CPU or memory, and software such as a control program. For example, the control unit may include an algorithm for controlling the operation of components within the washing machine, at least one memory storing program-type data, and at least one processor performing the aforementioned operation using data stored in the at least one memory. The memory and the processor may each be implemented as separate chips. The processor may include one or more processor chips or one or more processing cores. The memory may include one or more memory chips or one or more memory blocks. Additionally, the memory and the processor may be implemented as a single chip.

[0091] Below, washing machines according to various embodiments are specifically described with reference to the attached drawings.

[0092] Fig. 1 is an internal example diagram of a washing machine according to one embodiment, which is described with reference to Figs. 2 to 6.

[0093] FIG. 2 is an exemplary view of an exterior of a washing machine according to one embodiment, FIG. 3 is an exemplary view of sensors provided in a washing machine according to one embodiment, FIG. 4 is an exemplary view of a water level sensor provided in a washing machine according to one embodiment, FIG. 5 is an exemplary view of the arrangement of a flow sensor provided in a washing machine according to one embodiment, and FIG. 6 is an exemplary view of the structure of a flow sensor provided in a washing machine according to one embodiment.

[0094] In this embodiment, a front-loading washing machine is used as an example.

[0095] As shown in FIG. 1, the washing machine (1) may include a housing (110), a tub (120), a drum (130), a driving motor (140), a water supply device (150), a detergent supply device (160), and a drain device (170).

[0096] The housing (110) forms the exterior of the washing machine (1), and has an opening formed on one side through which laundry can be inserted and removed.

[0097] The housing (110) may be provided with a door (111) for opening and closing the opening.

[0098] A gasket (112) for sealing between the door (111) and the opening may be provided on the periphery of the opening of the housing (110).

[0099] Among the surfaces of the housing of the washing machine (1), the direction in which one surface with an opening is located is called the front, and the direction in which the other surface opposite to the one surface with the opening is located is called the rear.

[0100] The tub (120) is provided inside the housing (110) and can be fixedly provided and can receive water supplied from a water supply device (150).

[0101] The drum (130) is provided inside the tub (120), and may be provided in a shape corresponding to the shape of the tub (120).

[0102] The drum (130) may be provided to be rotatable inside the tub (120).

[0103] A drum (130) has an inlet formed on one side, and a plurality of holes formed on the other side. The inlet of the drum (130) is a hole through which laundry can be inserted when the door (111) is opened, and the plurality of holes (131) may be holes that form a path for allowing water to flow between the tub (120) and the drum (130).

[0104] That is, the plurality of holes (131) allow water from the tub (120) to flow into the drum (130) and also allow water from inside the drum (130) to be discharged toward the tub (120).

[0105] A rotation shaft of a driving motor (140) can be connected to the outside of the drum (130).

[0106] The rotational axis of this drive motor (140) can extend to the outside of the tub (120). The rotational axis of the drive motor (140) can transmit the driving force of the drive motor (140) to the drum (130).

[0107] Accordingly, the drum (130) can rotate clockwise or counterclockwise within the tub (120) by the driving force of the driving motor (140).

[0108] A plurality of lifters (132) may be provided on the inner surface of the drum (130) to enable the laundry to rise and fall when the drum (130) rotates.

[0109] A plurality of lifters (132) can be formed to protrude from the inner surface of the drum (130).

[0110] The drive motor (140) is driven when the weight of the laundry is detected, during the washing cycle, the rinsing cycle, and the dehydration cycle, and the driving force according to the driving rotates the drum (130), thereby washing, rinsing, and dehydrating the laundry contained in the drum (130).

[0111] The drive motor (140) can generate driving force from power of an external power source and transmit the generated driving force as rotational force to the drum (130) through the rotation shaft.

[0112] The driving motor (140) may employ a brushless direct current motor (BLDC motor) or a synchronous motor whose rotation speed is easy to control. In addition, the driving motor (140) may employ a low-priced direct current motor (DC motor) or induction motor, but is not limited thereto.

[0113] The water supply device (150) includes one or more water supply pipes (151) and one or more water supply valves (152).

[0114] One end of the first water supply pipe (151) can be connected to an external water source (not shown), and the other end of the first water supply pipe (151) can be connected to a detergent supply device (160). The first water supply pipe (151) receives water from the external water source and guides the received water into the detergent supply device (160).

[0115] That is, the first water supply pipe (151) is connected between the detergent supply device (160) and the tub (120), so that water supplied from an external water source can be guided into the tub (120) and drum (130) together with detergent from the detergent supply device (160).

[0116] The first water supply pipe may include a first cold water pipe and a first hot water pipe.

[0117] The first water supply valve (152) is opened during the washing cycle and the rinsing cycle to allow external water to be supplied into the tub (120) and the drum (130) through the first water supply pipe (151), and is closed based on the water level in the tub (120) being at the target level to block the water supplied into the tub (120) and the drum (130).

[0118] The target height may be the height of water required to perform the washing and rinsing cycles determined by the washing course and option information selected by the user.

[0119] The first water supply valve (152) is opened or closed during the washing and rinsing cycles to control the amount of water supplied into the tub (120) and drum (130).

[0120] When a first cold water pipe and a first hot water pipe are provided, the first water supply valve (152) may include a first cold water valve provided in the first cold water pipe and a first hot water valve provided in the first hot water pipe.

[0121] The detergent supply device (160) can store detergent input by the user. That is, the detergent supply device (160) can store at least one of a synthetic detergent, a fabric softener, and a bleach.

[0122] This detergent supply device (160) allows water to flow into the first water supply pipe (151) during the washing cycle, and the water flows out through the first water supply pipe (151) together with the detergent.

[0123] The drainage device (170) includes a drain pipe (171) and a drain pump (172), and may further include a drain valve.

[0124] The drainage device (170) is provided at the bottom of the housing, but may be provided at the bottom of the tub (120).

[0125] A drain pipe (171) is provided at the bottom of the tub (120) and may be spatially connected to the tub (120). The drain pipe (171) may be a path through which water discharged from the tub (120) flows.

[0126] The drain pump (172) pumps water inside the tub (120) and drum (130) during the drainage and dehydration cycles.

[0127] The drain pump (172) causes water in the tub (120) and drum (130) to flow in along one side of the drain pipe (171) when pumping, and guides the flowed in water to the outside through the other side of the drain pipe (171), thereby allowing the water inside the tub (120) and drum (130) to be discharged to the outside.

[0128] As shown in FIG. 2, the washing machine (1) further includes a control panel (180) for interface with the user.

[0129] The control panel (180) may be a user interface.

[0130] The control panel (180) may include an input unit (181) for receiving an operation command and an output unit (182) for outputting operation information of the washing machine.

[0131] The input unit (181) may include a plurality of buttons for receiving a driving start command, a driving pause command, and a driving stop command, and may further include a jog dial for receiving a washing course. In addition, the input unit for receiving a washing course may be provided in the form of a button.

[0132] Here, the washing cycle may include standard washing, comforter washing, boiling, wool washing, towel washing, and quick washing. The washing cycle may further include a tub wash for cleaning the inside of the washing machine.

[0133] The input unit (181) may further include an option button for inputting option information.

[0134] The optional information may include at least one of the amount of water, the temperature of the water, the washing time of the washing cycle, the number of rinsing cycles, the intensity of the spin-drying cycle, and the time of the spin-drying cycle.

[0135] Additionally, if the washing machine has a drying cycle, the optional information may further include the dryness level.

[0136] The input unit (181) may include hardware devices such as switches, pedals, keyboards, mice, trackballs, various levers, handles, sticks, etc., in addition to buttons and jog dials.

[0137] Additionally, the input unit (181) may include a GUI (Graphical User Interface), i.e., a software device, such as a touch pad. The touch pad may be implemented as a touch screen panel (TSP) and may form a mutual layer structure with the display unit.

[0138] The output section (182) outputs operation information of the washing machine (1).

[0139] The output unit (182) may include a display unit (182a) and a speaker (182b).

[0140] The display unit (182a) displays the operation information of the washing machine, displays the remaining time during operation, and can also display the washing course and option information selected by the user.

[0141] The display unit (182a) can display guidance information corresponding to the start, end, and pause of operation of the washing machine in the form of text or emoticons.

[0142] The display unit (182a) displays the pressure of water supplied to the tub (i.e., water pressure), and can also display information about whether the water pressure is normal or abnormal.

[0143] The display unit (182a) can also display information on the cause of the abnormality corresponding to the water pressure abnormality. For example, the cause of the abnormality may include a water supply valve failure or freezing.

[0144] The display unit (182a) includes a plurality of seven segments.

[0145] The display unit (182a) may be provided as a liquid crystal display (LCD), a digital light processing (DLP) panel, a plasma display panel, an electroluminescence (EL) panel, an electrophoretic display (EPD) panel, an electrochromic display (ECD) panel, a light emitting diode (LED) panel, or an organic light emitting diode (OLED) panel, but is not limited thereto.

[0146] The speaker (182b) can output an alarm sound corresponding to the start, end, and pause of operation of the washing machine.

[0147] The speaker (182b) outputs information about the pressure of water (i.e., water pressure) supplied to the tub (120) as a guide sound, and can also output information about whether the water pressure is normal or abnormal as a guide sound.

[0148] As shown in FIG. 3, the washing machine (1) may further include a second water supply pipe (153), a second water supply valve (154), a water level sensor (191), a turbidity sensor (193), and a conductivity sensor (194).

[0149] A second water supply pipe (153) may be provided between an external water source (not shown) and the tub (120). The second water supply pipe (153) may directly supply water supplied from the external water source to the tub (120).

[0150] The second water supply pipe (153) may also include a second cold water pipe and a second hot water pipe.

[0151] The second water supply valve (154) can directly supply water supplied from an external water source to the tub (120) by opening it, and can block the supply of water from the external water source to the tub (120) by closing it.

[0152] When a second cold water pipe and a second hot water pipe are provided, the second water supply valve (154) may include a second cold water valve provided in the second cold water pipe and a second hot water valve provided in the second hot water pipe.

[0153] The water level sensor (191) is connected to the drain pipe (171) and may be connected at a point adjacent to the drain pump (172).

[0154] The first end of the water level sensor (191) is connected to the drain pipe (171), and the second end of the water level sensor (191) is provided on the outside of the tub (120), but may be provided inside the housing (110).

[0155] The water level sensor (191) is for detecting the height (i.e., water level) of water contained in the tub (120), detects information corresponding to the height of water contained in the tub (120), and outputs the detected information as first detection information.

[0156] The water level detection range (hr) of the water level sensor (191) may be from the connection point of the drain pipe (171) and the water level sensor (191) to the point where water can be accommodated in the tub.

[0157] The point at which water can be accommodated in the tub may be the point corresponding to the maximum water level in the tub.

[0158] The water level sensor (191) can detect the level of water remaining in the drain pipe (171) during the drainage operation.

[0159] The water level sensor (191) can detect the height of water existing in the area (ha) between the connection point of the drain pipe (171) and the water level sensor (191) and the lowest section of the tub.

[0160] The water level at the connection point between the drain pipe (171) and the water level sensor (191) may be the lowest water level detected by the water level sensor (191), which may be the first reference water level (Wr) of the washing machine.

[0161] The water level sensor (191) can be implemented in a non-contact or contact manner.

[0162] The non-contact water level sensor (191) may include a radio-frequency water level sensor and an ultrasonic water level sensor.

[0163] Contact type water level sensors may include float type water level sensors, guide rope type water level sensors, pressure type water level sensors, capacitive type water level sensors, differential pressure type water level sensors, and electrode type water level sensors.

[0164] As illustrated in FIG. 4, the water level sensor (191) of the present embodiment may include a pressure-type water level sensor.

[0165] The water level sensor (191) may include, but is not limited to, a hose (191a) connected to a drain pipe, a diaphragm (191b) connected to the hose (191a), a ferrite (191c) provided on the diaphragm (191b), and a coil (191d) wound around the ferrite (191c).

[0166] Briefly explaining the water level detection principle of the water level sensor, when water is contained in the drain pipe (171) and the tub (120), the pressure in the hose (191a) changes in response to the water level, a force corresponding to the pressure in the hose (191a) is transmitted to the diaphragm (191b), and the ferrite (191c) rises in the coil (191d) by the force transmitted to the diaphragm (191b), and as the ferrite (191c) rises in the coil (191d), the magnetic flux changes, and the inductance of the coil (191d) changed by the magnetic flux is output.

[0167] Here, the inductance of the coil is the value that determines the resonant frequency.

[0168] The resonant frequency may be information corresponding to the height of the water (i.e. water level) in the tub.

[0169] The water level sensor (191) can output information about the determined resonance frequency as first detection information.

[0170] The flow sensor (192) is for detecting the amount of water supplied from an external water source to the tub (120), and can detect information corresponding to the amount of water supplied from the external water source to the tub (120) and output the detected information as second detection information.

[0171] The flow sensor (192) can output a pulse corresponding to the rotation of the impeller as second detection information.

[0172] There may be one or more flow sensors (192).

[0173] The flow sensor (192) can be installed in the first water supply pipe (151) or the second water supply pipe (152).

[0174] When the flow sensor (192) is provided in the first water supply pipe (151), the flow sensor (192) may be provided in the first water supply pipe (151) but may be provided between the external water supply source and the first water supply valve (152).

[0175] When the flow sensor (192) is provided in the first water supply pipe (151), the flow sensor (192) is provided in the first water supply pipe (151), but it is also possible to provide it between the first water supply valve (152) and the inlet of the tub (120).

[0176] As shown in FIG. 3, when the flow sensor (192) is provided in the second water supply pipe (153), the flow sensor (192) may be provided in the second water supply pipe (153) but may be provided between the external water supply source and the second water supply valve (154).

[0177] When the flow sensor (192) is installed in the second water supply pipe (153), the flow sensor (192) is installed in the second water supply pipe (153), but it is also possible to install it between the second water supply valve (154) and the inlet of the tub (120).

[0178] As shown in Fig. 5, when a second cold water pipe (153a) and a second hot water pipe (153b) are provided, flow sensors may be provided in each of the second cold water pipe (153a) and the second hot water pipe (153b).

[0179] The first flow sensor (192a) may be installed in the second cold water pipe (153a), but may be installed between the external water supply source and the second cold water valve (154a). The second flow sensor (192b) may be installed in the second cold water pipe (153b), but may be installed between the external water supply source and the second hot water valve (154b).

[0180] The first flow sensor (192a) is installed in the second cold water pipe (153a), but may also be installed between the second cold water valve (154a) and the inlet of the tub. The second flow sensor (192b) is installed in the second cold water pipe (153b), but may also be installed between the second hot water valve (154b) and the inlet of the tub.

[0181] As illustrated in FIG. 6, the flow sensor (192) may include a body (192a), a first flow path (192b) provided on a first side of the body (192a), a second flow path (192c) provided on a second side of the body (192a), and an impeller (192d) provided inside the body (192a) and rotated by the impact of a water flow.

[0182] The first water supply pipe (192b) can be connected between an external water supply source and a second water supply pipe (153).

[0183] The second euro (192c) can be connected between the second water supply pipe (153) and the second water supply valve (154).

[0184] The flow sensor (192) can receive water from an external water source through the first flow path (192b) and transfer the water flowing into the first flow path (192b) to the second flow path (192c) through the impeller (192d) within the body.

[0185] The water in the flow sensor (192) can flow at a speed corresponding to the water pressure in the second water supply pipe (153), thereby causing the impeller (192d) to rotate.

[0186] Water delivered to the second flow path (192c) of the flow sensor (192) can be discharged toward the second water supply valve (154).

[0187] Water discharged from the second water supply valve (154) can be supplied to the tub (120) through the second water supply valve (154) at a speed corresponding to the water pressure.

[0188] The flow sensor (192) can output a pulse corresponding to the rotational speed of the impeller (192d) as second detection information.

[0189] The pulse may be information corresponding to the amount of water supplied to the tub.

[0190] The turbidity sensor (193) is provided in the tub (120), but may be provided at the bottom of the tub (120).

[0191] A turbidity sensor (193) can be provided in the space between the tub (120) and the drum (130).

[0192] The turbidity sensor (193) can detect the turbidity of water contained in the tub (120).

[0193] The turbidity sensor (193) may be provided to protrude from the lower surface of the tub.

[0194] The water contained in the tub (120) may be water supplied through the second water supply pipe (153) or water supplied through the first water supply pipe (151).

[0195] The conductivity sensor (194) is provided in the tub (120), but may be provided at the bottom of the tub (120).

[0196] The conductivity sensor (194) may be provided to protrude from the lower surface of the tub.

[0197] A conductivity sensor (194) may be provided in the space between the tub (120) and the drum (130).

[0198] The conductivity sensor (194) may be provided adjacent to the turbidity sensor (193).

[0199] The conductivity sensor (194) can detect the conductivity of water contained in the tub (120).

[0200] The conductivity sensor (194) may include a first electrode and a second electrode, and may detect the conductivity of water in the tub through current conduction between the first electrode and the second electrode.

[0201] The conductivity sensor (194) can output a higher conductivity signal as the amount of electrolyte ions, such as sodium, calcium, and magnesium, increases.

[0202] The conductivity of water is information corresponding to the hardness of the water and can be proportional to the hardness.

[0203] The turbidity sensor (193) and the conductivity sensor (194) can detect the turbidity and conductivity of the water in the tub based on the water level in the tub being the second reference water level (Ws).

[0204] The second reference water level (Ws) is a water level higher than the first reference water level (Wr).

[0205] The second reference water level (Ws) is the water level at which the turbidity sensor (193) and the conductivity sensor (194) can be submerged in water, and may be the water level when only water is contained in the tub (120).

[0206] The second reference water level (Ws) is a water level at which no water is received into the drum (130), and may be the same as the lowest section of the drum (130) or a water level lower than the lowest section of the drum (130).

[0207] The second reference water level (Ws) can be set to any point within the sensing range (hs).

[0208] Fig. 7 is a control configuration diagram of a washing machine according to one embodiment, which is described with reference to Figs. 8 and 9.

[0209] Fig. 8 is an example diagram of a display unit of a washing machine according to one embodiment, and Fig. 9 is an example diagram of a table stored in a washing machine according to one embodiment.

[0210] The washing machine (1) includes a driving motor (140), a water supply device (150), a drainage device (170), an input unit (181), an output unit (182), a water level sensor (191), a flow sensor (192), a turbidity sensor (193), a conductivity sensor (194), a processor (200), and a memory (210).

[0211] The drive motor (140) rotates the drum (130).

[0212] The drive motor (140) can rotate clockwise or counterclockwise based on the control command of the processor (200), and can rotate at a rotation angle, rotation speed, and rotation time corresponding to the control command of the processor (200).

[0213] That is, the drive motor (140) can rotate the drum (130) in a rotational direction, rotational angle, rotational time, and rotational speed corresponding to the control command of the processor (200).

[0214] The water supply device (150) may include first and second water supply valves (152, 154). The first and second water supply valves (152, 154) may be opened or closed based on a control command of the processor (200).

[0215] The first water supply valve (152) can supply water to the tub (120) and drum (130) when opened, and can block the water supplied to the tub (120) and drum (130) when closed.

[0216] The second water supply valve (154) can supply water to the tub (120) when opened and block the water supplied to the tub (120) when closed.

[0217] The drainage device (170) may include a drainage pump (172). The drainage pump (172) may perform a pumping operation based on a control command of the processor (200).

[0218] Water in the tub (120) and drum (130) can be discharged to the outside by pumping of the drain pump (172).

[0219] The input unit (181) receives user input.

[0220] The input unit (181) can receive a driving start command, a driving pause command, and a driving end command, can receive a washing course, and can receive additional optional information.

[0221] The output unit (182) can output operation information of the washing machine.

[0222] The output unit (182) may include a display unit (182a) and a speaker (182b).

[0223] The display unit (182a) displays information related to the status or operation of the washing machine (1) based on the control command of the processor (200), displays information input to the input unit (181), and displays information to guide the user's input.

[0224] The display unit (182a) displays the pressure of water supplied to the tub (i.e., water pressure), and can also display information about whether the water pressure is normal or abnormal.

[0225] As illustrated in Fig. 8, the display unit (182a) can also display information on the cause of the abnormality corresponding to the water pressure abnormality. For example, the cause of the abnormality may include a water supply valve being locked or frozen.

[0226] The speaker (182b) can output information related to the status or operation of the washing machine (1) as a guide sound based on the control command of the processor (200), and can output information for guiding the user's input as a guide sound.

[0227] The speaker (182b) outputs information about the pressure of water (i.e., water pressure) supplied to the tub (120) as a guide sound, and can also output information about whether the water pressure is normal or abnormal as a guide sound.

[0228] The water level sensor (191) can be activated or deactivated based on a control command of the processor (200).

[0229] The water level sensor (191) can detect the height of water contained in the tub (120) and transmit first detection information corresponding to the detected water height to the processor (200).

[0230] The first sensing information corresponding to the water level may include information about frequency, wherein the frequency may include a resonant frequency.

[0231] The flow sensor (192) can detect the amount of water supplied to the tub (120) and transmit second detection information corresponding to the detected amount of water to the processor (200).

[0232] The second sensing information corresponding to the amount of water detected may include information about the pulse.

[0233] The turbidity sensor (193) can be activated or deactivated based on a control command of the processor (200).

[0234] The turbidity sensor (193) can detect the turbidity of the water in the tub (120) and transmit information corresponding to the detected turbidity to the processor (200).

[0235] Information corresponding to turbidity may be voltage or current information corresponding to light quantity.

[0236] The conductivity sensor (194) can be activated or deactivated based on a control command from the processor (200).

[0237] The conductivity sensor (194) detects the conductivity of the water in the tub (120) and transmits information about the detected conductivity of the water to the processor (200). The information about the conductivity of the water may include information about the hardness of the water.

[0238] The processor (200) controls the overall operation of the washing machine (1).

[0239] The processor (200) determines the washing time, the number of rinse cycles and the rinsing time, the spin-drying intensity and the spin-drying time based on the washing course and option information input to the input unit (181), and can control the operation of the washing machine based on the determined washing time, the number of rinse cycles and the rinsing time, the spin-drying intensity and the spin-drying time.

[0240] The processor (200) can also control the output unit (182) to output a washing course and at least one option information selected by the user through the input unit (181).

[0241] The processor (200) can change at least one of the washing time, the number of rinse cycles and the rinsing time, the spin-drying intensity and the spin-drying time determined based on the weight of the laundry detected by the weight detection unit (not shown) when controlling the operation of the washing machine, and can also control the operation of the washing machine based on the changed information.

[0242] The processor (200) can obtain the rotation direction, rotation angle, rotation speed and rotation time of the drum for each cycle and each cycle execution time based on the weight of the recognized laundry and the washing course and option information selected by the user during the washing cycle and the rinsing cycle, and control the operation of the drive motor (140) based on the obtained rotation direction, rotation speed, rotation angle and rotation time of the drum (130).

[0243] The processor (200) can obtain the rotation speed, rotation direction, and rotation time of the drive motor (140) based on the weight of the recognized laundry during the dehydration process and the washing course and option information selected by the user, and control the operation of the drive motor (140) based on the obtained rotation speed, rotation time, and rotation direction of the drive motor (140).

[0244] When controlling the operation of the washing machine, the processor (200) obtains a target water supply amount based on the weight of the laundry detected by the weight detection unit (not shown), and controls at least one of the first water supply valve (152) and the second water supply valve (154) based on the obtained target water supply amount, the first detection information detected by the water level sensor (191), and the second detection information detected by the flow sensor (192).

[0245] When controlling the operation of the washing machine, the processor (200) obtains a target water supply amount based on the weight of the laundry detected by the weight detection unit (not shown) and the water supply amount received by the input unit (181), recognizes the actual water supply amount supplied to the tub (120) based on the first detection information detected by the water level sensor (191) and the second detection information detected by the flow sensor (192), and controls at least one of the first water supply valve (152) and the second water supply valve (154) based on the recognized actual water supply amount and the obtained target water supply amount.

[0246] The processor (200) can control at least one of the first and second hot water valves or at least one of the first, second, and cold water valves based on the type of water information received from the input unit (181).

[0247] The processor (200) can control at least one of the first and second cold water valves based on the fact that the type of water received from the input unit (181) is cold water, can control at least one of the first and second hot water valves based on the fact that the type of water received from the input unit (181) is hot water, and can control at least one of the first and second cold water valves and at least one of the first and second hot water valves based on the fact that the type of water received from the input unit (181) is cold water and hot water.

[0248] The processor (200) can recognize the turbidity of water based on third sensing information received from the turbidity sensor (193), and can recognize the hardness of water based on fourth sensing information received from the conductivity sensor (194).

[0249] The third sensing information may be voltage information or current information corresponding to the amount of light.

[0250] The fourth sensing information may be conductivity information.

[0251] The processor (200) can also change the washing time of the washing cycle and the number of rinse cycles and rinsing time of the rinsing cycle based on the recognized turbidity.

[0252] The processor (200) can determine the amount of detergent to be injected based on the hardness recognized during the washing cycle, determine the washing time of the washing cycle, and determine the number of rinse cycles and the rinsing time of the rinsing cycle.

[0253] The processor (200) can also determine whether the rinsing cycle is complete based on the hardness recognized during the rinsing cycle. That is, the processor (200) can change the number of rinsing cycles of the rinsing cycle or complete the rinsing cycle based on the hardness recognized during the rinsing cycle.

[0254] The processor (200) can also control the output unit (182) to output washing information of the changed washing cycle and rinsing information of the rinsing cycle.

[0255] The processor (200) can perform a drainage cycle by controlling the drain pump (172) based on the completion of the washing cycle and the rinsing cycle.

[0256] The processor (200) can control the drain pump (172) during the intermediate dehydration process and the final dehydration process, and can perform the drainage process by controlling the drain pump (172) based on the completion of the intermediate dehydration process and the final dehydration process.

[0257] The processor (200) can recognize whether there is water remaining in the tub (120) and the drain pipe (171) based on the water level detected by the water level sensor (191) at each drainage operation, recognize the completion of drainage based on the recognized presence of water remaining, and then stop the operation of the drain pump (172) based on the completion of drainage.

[0258] More specifically, the processor (200) can recognize that water (w) exists in the drain pipe (171) based on the recognized water level being higher than the first reference water level (Wr), and can control the operation of the drain pump (172) to remove the water in the drain pipe.

[0259] The first reference water level (Wr) may be the lowest water level detectable by the water level sensor (191).

[0260] The processor (200) can recognize that there is no water in the drain pipe (171) as well as in the tub (120) based on the recognized water level being lower than the first reference water level, and can stop the operation of the drain pump (172). The processor (200) can end the drainage process by stopping the operation of the drain pump (172).

[0261] A processor (200) of an embodiment that recognizes the actual water supply quantity will be described in more detail.

[0262] When one flow sensor (192) is provided in the second water supply pipe (153) of the washing machine, the control configuration of the processor is described.

[0263] The processor (200) controls the water supply based on receiving a command to start operation from the input unit (181). This embodiment describes an example of supplying water through a second water supply pipe (153).

[0264] The processor (200) can control the opening of the second water supply valve (154) so ​​that water from an external water source is supplied directly to the tub (120).

[0265] The processor (200) can prevent water in the tub (120) from seeping into the laundry by controlling the opening of the second water supply valve (154).

[0266] The processor (200) can count the water supply time during which water is supplied to the tub during water supply.

[0267] The processor (200) can receive first detection information from a water level sensor (191) during water supply and second detection information from a flow sensor (192).

[0268] The processor (200) can recognize the water level of the tub based on the received first sensing information, and can recognize the amount of water supplied to the tub based on the received second sensing information.

[0269] The processor (200) identifies whether the recognized water level has reached the second reference water level, and recognizes the counted water supply time based on the identification that the recognized water level has reached the second reference water level.

[0270] The processor (200) can recognize the pressure (i.e., water pressure, P) of the water flowing in the second water supply pipe based on the recognized water supply time (t) and the recognized water supply amount (x).

[0271] P= x / t

[0272] The processor (200) can recognize a conversion constant (k) corresponding to the recognized water pressure from information stored in the memory (210) and recognize the actual water supply amount (m) supplied to the tub based on the recognized conversion constant (k) and the second sensing information.

[0273] The second sensing information may include the number of pulses.

[0274] The processor (200) can recognize the actual water supply amount (m) based on the recognized conversion constant (k) and pulse number (n).

[0275] m=k * n

[0276] The processor (200) can control the closing of the second water supply valve (154) based on the recognition that the recognized water level has reached the second reference water level. In this case, the processor (200) can control the opening of the second water supply valve (154) based on the recognition of the conversion constant (k), thereby allowing the water supply for the washing process to be performed.

[0277] To prevent the washing time from increasing, the processor (200) may also keep the second water supply valve (154) open based on the recognition that the water level has reached the second reference water level.

[0278] The processor (200) can identify whether the actual water supply amount has reached the target water supply amount based on the recognized actual water supply amount and the target water supply amount, and can control the closing of the second water supply valve (154) based on the identification that the actual water supply amount has reached the target water supply amount.

[0279] The processor (200) can also control the output unit (182) to output information about the recognized water pressure.

[0280] The processor (200) can also control the output unit (182) to output information about the recognized actual water supply amount.

[0281] The processor (200) can also control the output unit (182) to compare the recognized water pressure with the reference water pressure and output information about the abnormal water pressure based on the recognized water pressure being lower than the reference water pressure.

[0282] The processor (200) can also control the output unit (182) to analyze the cause of abnormal water pressure based on the difference between the recognized water pressure and the reference water pressure and output information about the analyzed cause.

[0283] The processor (200) can also control the output unit (182) to analyze the cause of abnormal water pressure based on current date information, temperature information, and weather information and output information on the analyzed cause.

[0284] When flow sensors (192a, 192b) are respectively provided in the second cold water pipe (153a) and the second hot water pipe (153b) of the washing machine, the control configuration of the processor (200) is described (see FIG. 5).

[0285] The processor (200) can recognize the amount of water supplied through the second cold water pipe (153a) and the second hot water pipe (153b) based on the information on selection of hot and cold water received through the input unit (181).

[0286] The processor (200) can control the opening of the second cold water valve (154a) based on receiving an operation start command from the input unit (181), thereby allowing water from an external water source to be supplied directly to the tub (120).

[0287] The processor (200) can prevent cold water from being absorbed into the laundry by controlling the opening of the second cold water valve (154a).

[0288] The processor (200) can count the first water supply time during which cold water is supplied to the tub during water supply.

[0289] The processor (200) can receive first detection information from a water level sensor (191) during the supply of cold water and second detection information from a first flow rate sensor (192a).

[0290] The processor (200) can recognize the water level of cold water in the tub based on the received first sensing information and can recognize the amount of cold water supplied in the tub based on the received second sensing information.

[0291] The processor (200) identifies whether the recognized cold water level has reached the set level, and recognizes the counted first-grade water time based on the identification that the recognized cold water level has reached the set level.

[0292] The set level can be approximately 50% lower than the second reference level.

[0293] The processor (200) can recognize the pressure of cold water flowing in the second cold water pipe (153a) (i.e., first water pressure, P1) based on the recognized first water supply time (t1) and the recognized cold water supply amount (x1).

[0294] P1= x1 / t1

[0295] The processor (200) can recognize a first conversion constant (k1) corresponding to the water pressure of the recognized cold water from the information stored in the memory (210) and recognize the actual cold water supply amount (m1) supplied to the tub (120) based on the recognized first conversion constant (k1) and the second sensing information.

[0296] The second sensing information may include the number of pulses.

[0297] The processor (200) can recognize the actual cold water supply amount (m1) based on the recognized conversion constant (k1) and the pulse number (n1) of the first flow sensor (192a).

[0298] m1=k1 * n1

[0299] The processor (200) can control the closing of the second cold water valve (154a) based on the recognition that the level of the recognized cold water has reached the set level.

[0300] The processor (200) can control the opening of the second hot water valve (154b) based on the closing of the second cold water valve (154a).

[0301] The processor (200) can prevent hot water from being absorbed into the laundry by controlling the opening of the second hot water valve (154b).

[0302] The processor (200) can count the second water supply time during which hot water is supplied to the tub during water supply.

[0303] The processor (200) can receive first detection information from a water level sensor (191) during the supply of hot water, and second detection information from a second flow rate sensor (192b).

[0304] The processor (200) can recognize the water level within the tub based on the received first sensing information and can recognize the amount of hot water supplied within the tub based on the received second sensing information. Here, the water level within the tub may be a combined level of cold water and hot water.

[0305] The processor (200) identifies whether the recognized water level has reached the second reference water level, and recognizes the counted second water level time based on the identification that the recognized water level has reached the second reference water level.

[0306] The processor (200) can recognize the pressure of hot water flowing in the second hot water pipe (153b) (i.e., second water pressure, P2) based on the recognized second hot water supply time (t2) and the recognized hot water supply amount (x2).

[0307] P2= x2 / t2

[0308] The processor (200) can recognize a second conversion constant (k2) corresponding to the water pressure of the recognized hot water from the information stored in the memory (210) and recognize the actual amount of hot water (m2) supplied to the tub (120) based on the recognized second conversion constant (k2) and the second sensing information.

[0309] The second sensing information may include the number of pulses.

[0310] The processor (200) can recognize the actual hot water supply amount (m2) based on the recognized second conversion constant (k2) and the pulse number (n2) of the second flow sensor.

[0311] m2=k2 * n2

[0312] The processor (200) can control the closing of the second hot water valve (154b) based on the recognition that the recognized water level has reached the second reference water level.

[0313] The processor (200) can control the opening of the second cold water valve (154a) and the second hot water valve (154b) based on the recognition of the first conversion constant and the second conversion constant, thereby allowing water supply for the washing process to be performed.

[0314] When supplying cold water and hot water, the processor (200) recognizes the actual cold water supply amount based on the first conversion constant and the second detection information received from the first flow sensor (192a), recognizes the actual hot water supply amount based on the second conversion constant and the second detection information received from the second flow sensor (192b), adds up the recognized actual cold water supply amount and the actual hot water supply amount, and compares the added actual water supply amount with the target water supply amount.

[0315] The processor (200) can control the closing of the second cold water valve (154a) and the second hot water valve (154b) based on the total water supply amount and the target water supply amount being reached.

[0316] The processor (200) can also control the output unit (182) to output information about the recognized first and second water pressures.

[0317] The processor (200) can also control the output unit (182) to output information on the recognized actual hot water supply amount and the actual cold water supply amount.

[0318] The processor (200) can also control the output unit (182) to compare the recognized first water pressure with the reference water pressure, compare the recognized second water pressure with the reference water pressure, and output information about abnormal water pressure based on the comparison result.

[0319] The processor (200) may be implemented as a memory (not shown) that stores data regarding an algorithm for controlling the operation of components within the washing machine or a program that reproduces the algorithm, and a processor (not shown) that performs the aforementioned operations using the data stored in the memory. In this case, the memory and the processor may be implemented as separate chips. Alternatively, the memory and the processor may be implemented as a single chip.

[0320] The processor (200) can perform the above-described operation using data stored in the memory (210).

[0321] The processor (200) may include hardware such as a CPU or memory, and software such as a control program. For example, the processor (200) may include one or more processor chips that perform the aforementioned operations using an algorithm for controlling the operation of components within the washing machine, at least one memory that stores program-type data, and data stored in the at least one memory, or may include one or more processing cores.

[0322] The processor (200) may include a separate NPU that performs the operation of the artificial intelligence model, and may include a graphics-only processor (GPU), etc.

[0323] When there is one flow sensor, the memory (210) can store information on the conversion constant for each water pressure.

[0324] As illustrated in FIG. 9, information on conversion constants for each hydraulic pressure may include a table in which conversion constants for each hydraulic pressure are matched.

[0325] Information on the conversion constant for each hydraulic pressure may be obtained through testing.

[0326] When there are two flow sensors, the memory (210) can store information on a first conversion constant and a second conversion constant for each water pressure. The first conversion constant may be a conversion constant corresponding to the water pressure of cold water. The second conversion constant may be a conversion constant corresponding to the water pressure of hot water.

[0327] The memory (210) can store information about the first reference water level and the second reference water level.

[0328] The second reference level may be a higher level than the first reference level.

[0329] The memory (210) can store information on the reference water pressure, and can also store cause information on abnormal water pressure corresponding to the water pressure difference.

[0330] The memory (210) can store data for an algorithm for controlling the operation of components in the washing machine or a program that reproduces the algorithm.

[0331] The memory (210) may be implemented as at least one of a non-volatile memory element such as a cache, a ROM (Read Only Memory), a PROM (Programmable ROM), an EPROM (Erasable Programmable ROM), an EEPROM (Electrically Erasable Programmable ROM), and a flash memory, a volatile memory element such as a RAM (Random Access Memory), or a storage medium such as a hard disk drive (HDD) or a CD-ROM, but is not limited thereto.

[0332] The memory (210) may include one or more memory chips or one or more memory blocks.

[0333] At least one component may be added or deleted to correspond to the performance of the components of the washing machine illustrated in Fig. 7. Furthermore, it will be readily apparent to those skilled in the art that the relative positions of the components may be altered to correspond to the performance or structure of the dryer.

[0334] Meanwhile, each component illustrated in FIG. 7 refers to software and / or hardware components such as a Field Programmable Gate Array (FPGA) and an Application Specific Integrated Circuit (ASIC).

[0335] Figure 10 is a control flowchart of a washing machine according to an embodiment.

[0336] The washing machine (1) controls the opening of the second water supply valve (154) (302) based on the receipt of an operation start command from the input unit (181) (301). This allows water from an external water supply source to be directly supplied to the tub (120) through the second water supply pipe.

[0337] The washing machine (1) can count the water supply time during which water is supplied to the tub through the second water supply pipe (153) (303).

[0338] The washing machine (1) can receive first detection information from the water level sensor (191) during water supply through the second water supply pipe (153).

[0339] The washing machine (1) can recognize the water level of the tub based on the received first sensing information (304) and can recognize the amount of water supplied to the tub based on the received second sensing information.

[0340] The washing machine (1) can identify whether the recognized water level has reached the second reference water level (305) and recognize the counted water supply time based on the identification that the recognized water level has reached the second reference water level (306).

[0341] The washing machine (1) recognizes the amount of water supplied to the tub based on the second detection information received from the flow sensor (192) (307).

[0342] The washing machine (1) can recognize the pressure (i.e., water pressure) of the water flowing in the second water supply pipe based on the recognized water supply time (t) and the recognized water supply amount (308).

[0343] The washing machine (1) can recognize a conversion constant corresponding to the recognized water pressure from information stored in the memory (210) (309), and recognize the actual amount of water supplied to the tub based on the recognized conversion constant and the second sensing information.

[0344] The second sensing information may include the number of pulses.

[0345] The washing machine (1) can recognize the actual water supply amount based on the recognized conversion constant and pulse number (310).

[0346] The washing machine (1) can output information about the recognized water pressure through the output unit (182) (311).

[0347] Outputting through the output unit (182) may include displaying information about the recognized water pressure through the display unit and may include outputting information about the recognized water pressure as sound through the speaker.

[0348] The washing machine (1) can also output information about the recognized actual water supply amount through the output unit (182).

[0349] The washing machine (1) can also compare the recognized water pressure with the reference water pressure and output information about abnormal water pressure through the output unit (182) based on the recognized water pressure being lower than the reference water pressure.

[0350] The washing machine (1) can also analyze the cause of abnormal water pressure based on the difference between the recognized water pressure and the standard water pressure and output information about the analyzed cause through the output unit (182).

[0351] The washing machine (1) can identify whether the actual water supply amount has reached the target water supply amount based on the actual water supply amount recognized based on the water pressure being normal and the target water supply amount, and can control the closing of the second water supply valve (154) based on the identification that the actual water supply amount has reached the target water supply amount.

[0352] The washing machine (1) can perform a washing cycle based on the completion of water supply.

[0353] Fig. 11 is a control configuration diagram of a washing machine according to another embodiment, which is described with reference to Fig. 12.

[0354] Fig. 12 is a graph of the water level by pulse number of the flow sensor of a washing machine according to another embodiment.

[0355] A washing machine (1) of another embodiment includes a driving motor (140), a water supply device (150), a drainage device (170), an input unit (181), an output unit (182), a water level sensor (191), a flow sensor (192), a turbidity sensor (193), a conductivity sensor (194), a processor (220), and a memory (230).

[0356] The driving motor (140), water supply device (150), drainage device (170), input unit (181), output unit (182), water level sensor (191), flow rate sensor (192), turbidity sensor (193), and conductivity sensor (194) of the washing machine of another embodiment are the same as the driving motor (140), water supply device (150), drainage device (170), input unit (181), output unit (182), water level sensor (191), flow rate sensor (192), turbidity sensor (193), and conductivity sensor (194) of the washing machine of one embodiment, and thus, description thereof is omitted.

[0357] The control configuration of the washing operation, rinsing operation, draining operation, and dehydration operation of the processor (220) is the same as the control configuration of the washing operation, rinsing operation, draining operation, and dehydration operation of the processor (200) of one embodiment, and thus, description thereof is omitted.

[0358] A control configuration of a processor (220) of another embodiment that recognizes the actual water supply amount is described.

[0359] When one flow sensor (192) is provided in the second water supply pipe (153) of the washing machine, the control configuration of the processor (220) is described.

[0360] The processor (220) can control the water supply based on the receipt of an operation start command from the input unit (181) and recognize the conversion constant of the flow rate sensor (192) during the water supply. That is, the processor (220) can recognize the conversion constant of the flow rate sensor at the time of the first water supply during the operation of the washing machine.

[0361] As an example of this embodiment, an example of supplying water through a second water supply pipe (153) is described.

[0362] The processor (220) can control the opening of the second water supply valve (154) so ​​that water from an external water source is supplied directly to the tub (120). The processor (220) can control the opening of the second water supply valve (154) so ​​that water inside the tub (120) is not absorbed into the washing cloth.

[0363] The processor (220) can receive first detection information from a water level sensor (191) during water supply and second detection information from a flow sensor (192).

[0364] The processor (220) can recognize the water level of the tub based on the received first sensing information, and can recognize the amount of water supplied to the tub based on the received second sensing information.

[0365] The first sensing information may include a frequency. The second sensing information may include a pulse count.

[0366] The processor (220) can identify whether the recognized water level has reached the second reference water level, and control the closing of the second water supply valve (154) based on the identification that the recognized water level has reached the second reference water level.

[0367] The second reference water level may be the water level corresponding to the lowest cross-section of the drum (130).

[0368] The second reference water level (Ws) can be set to any point within the sensing range (hs) (see Fig. 3).

[0369] As illustrated in FIG. 12, the processor (220) can obtain the number of pulses per hour supplied to the tub (120) during water supply and the water level per hour. Based on the obtained number of pulses and water level, the processor (220) can obtain a correlation function for the flow rate and water level, and recognize a conversion constant based on the obtained correlation function.

[0370] The processor (220) can recognize a section in which the number of pulses and the water level increase linearly based on the number of pulses supplied to the tub (120) per hour during the water supply and the water level per hour of the tub (120), obtain a correlation function for the flow rate and the water level in the recognized section, and recognize a conversion constant based on the obtained correlation function.

[0371] Within the sensing range (hs), the pulse number and water level can increase linearly.

[0372] The sensing range may be a range between the first reference water level and the second reference water level (see Fig. 3).

[0373] That is, the processor (220) recognizes the number of pulses from the first time point when the recognized water level reaches the first reference water level to the second time point when the recognized water level reaches the second reference water level, obtains a correlation function for the flow rate and the water level based on the number of pulses and the water level between the first time point and the second time point, and can recognize a conversion constant based on the obtained correlation function.

[0374] The processor (220) obtains a difference value between the recognized conversion constant and the conversion constant stored in the memory (230) and compares the obtained difference value with a pre-stored reference value.

[0375] The acquired difference value may be a constant difference value, which may be the absolute value of the difference between the recognized conversion constant and the conversion constant stored in the memory (230).

[0376] The conversion constant stored in the memory (230) may be a conversion constant acquired and stored through a test, or may be a conversion constant recognized and stored during a previous operation of the washing machine.

[0377] The processor (220) can maintain the storage of the conversion constant stored in the memory (230) based on the acquired difference value being less than the reference value.

[0378] The processor (220) can recognize the actual water supply amount supplied to the tub (120) based on the conversion constant stored in the memory (230) and the number of pulses received from the flow sensor (192) based on the fact that the acquired difference value is less than the reference value.

[0379] The processor (220) stores the recognized conversion constant in the memory (230) based on the fact that the acquired difference value is greater than or equal to a reference value, and can recognize the actual water supply amount supplied to the tub based on the recognized conversion constant and the number of pulses received from the flow sensor.

[0380] The processor (220) can update the conversion constant stored in the memory (230) to the recognized conversion constant based on the fact that the acquired difference value is greater than or equal to a reference value.

[0381] The processor (220) can control the opening of the second water supply valve (154) based on the recognition of the conversion constant, thereby allowing the water supply for the washing cycle to be performed again.

[0382] The processor (220) can identify whether the actual water supply amount has reached the target water supply amount based on the recognized actual water supply amount and the target water supply amount, and can control the closing of the second water supply valve (154) based on the identification that the actual water supply amount has reached the target water supply amount.

[0383] The processor (220) can also control the output unit (182) to output information about the recognized actual water supply amount.

[0384] The processor (220) can recognize the number of pulses from a first point in time when the recognized water level reaches a first reference water level to a second point in time when the recognized water level reaches a second reference water level, and can also recognize water pressure based on the amount of change in the number of pulses recognized between the first point in time and the second point in time.

[0385] The processor (220) can also recognize a conversion constant corresponding to the recognized water pressure from information stored in the memory (230) and recognize the actual water supply amount supplied to the tub (120) based on the recognized conversion constant and the number of pulses.

[0386] The processor (220) may obtain a difference value between a recognized conversion constant and a conversion constant stored in memory (230), and compare the obtained difference value with a pre-stored reference value to select either the conversion constant stored in memory or the recognized conversion constant.

[0387] The processor (220) can also control the output unit (182) to output information about the recognized water pressure.

[0388] The processor (220) can also control the output unit (182) to compare the recognized water pressure with the reference water pressure and output information about the abnormal water pressure based on the recognized water pressure being lower than the reference water pressure.

[0389] The processor (200) can also control the output unit (182) to analyze the cause of abnormal water pressure based on the difference between the recognized water pressure and the reference water pressure and output information about the analyzed cause.

[0390] When flow sensors (192a, 192b) are respectively provided in the second cold water pipe (153a) and the second hot water pipe (153b) of the washing machine, the control configuration of the processor is described (see Fig. 5).

[0391] The processor (220) can recognize the amount of water supplied through the second cold water pipe (153a) and the second hot water pipe (153b) based on the information on selection of hot and cold water received through the input unit (181).

[0392] The processor (220) can control the opening of the second cold water valve (154a) based on receiving a driving start command from the input unit (181), thereby preventing cold water from being absorbed into the washing cloth.

[0393] The processor (220) receives first detection information from a water level sensor (191) during the supply of cold water, recognizes the level of cold water in the tub based on the received first detection information, identifies whether the recognized level of cold water has reached a set level, and controls the closing of the second cold water valve (153a) based on the identification that the recognized level of cold water has reached the set level.

[0394] By controlling the closing of the second cold water valve (153a), the water level in the tub (120) can be stabilized.

[0395] The set level can be approximately 50% lower than the second reference level.

[0396] The processor (220) can recognize a section in which the number of pulses and the water level increase linearly based on the number of pulses supplied to the tub (120) per hour during the supply of cold water and the water level of the tub per hour, obtain a correlation function for the flow rate and the water level in the recognized section, and recognize a first conversion constant based on the obtained correlation function.

[0397] The processor (220) obtains a first difference value between the recognized first conversion constant and the first conversion constant stored in the memory (230) and compares the obtained first difference value with a pre-stored reference value.

[0398] The acquired first difference value may be a constant difference value, which may be the absolute value of the difference between the recognized first conversion constant and the first conversion constant stored in the memory (230).

[0399] The first conversion constant stored in the memory (230) may be a first conversion constant obtained and stored through a test, or may be a first conversion constant recognized and stored during a previous operation of the washing machine.

[0400] The processor (220) can recognize the actual amount of cold water supplied to the tub based on the first conversion constant stored in the memory (230) and the number of pulses received from the first flow sensor (192a) based on the fact that the acquired first difference value is less than the reference value.

[0401] The processor (220) stores the recognized first conversion constant in the memory (230) based on the fact that the acquired first difference value is greater than or equal to the reference value, and can recognize the actual amount of cold water supplied to the tub (120) based on the recognized first conversion constant and the number of pulses received from the flow sensor.

[0402] The processor (220) controls the opening of the second hot water valve (153b) based on the closing of the second cold water valve (153a), thereby supplying hot water to the tub (120) through the second hot water pipe (153b).

[0403] The processor (220) receives first detection information from a water level sensor (191) during the supply of hot water, recognizes the water level in the tub based on the received first detection information, identifies whether the recognized water level has reached a second reference water level, and controls the closing of the second hot water valve (153b) based on the identification that the recognized water level has reached the second reference water level.

[0404] The processor (220) can recognize a section in which the number of pulses and the water level increase linearly based on the number of pulses supplied to the tub (120) per hour during the supply of hot water and the water level of the tub per hour, obtain a correlation function for the flow rate and the water level in the recognized section, and recognize a second conversion constant based on the obtained correlation function.

[0405] The processor (220) obtains a second difference value between the recognized second conversion constant and the second conversion constant stored in the memory (230) and compares the obtained second difference value with a pre-stored reference value.

[0406] The acquired second difference value may be a constant difference value, which may be the absolute value of the difference between the recognized conversion constant and the second conversion constant stored in the memory (230).

[0407] The second conversion constant stored in the memory (230) may be a second conversion constant obtained and stored through a test, or may be a second conversion constant recognized and stored during a previous operation of the washing machine.

[0408] The processor (220) can recognize the actual water supply amount supplied to the tub (120) based on the second conversion constant stored in the memory (230) and the number of pulses received from the second flow sensor (192b) based on the fact that the acquired second difference value is less than the reference value.

[0409] The processor (220) stores the recognized second conversion constant in the memory (230) based on the fact that the acquired second difference value is greater than or equal to the reference value, and can recognize the actual water supply amount supplied to the tub (120) based on the recognized second conversion constant and the number of pulses received from the second flow sensor (192b).

[0410] The processor (220) can control the opening of the second cold water valve (154a) and the second hot water valve (154b) based on the recognition of the second conversion constant, thereby supplying cold water and hot water for the washing process.

[0411] The processor (220) can obtain the actual water supply amount supplied to the tub by adding the hot water supply amount and the cold water supply amount, and can identify whether the actual water supply amount has reached the target water supply amount based on the obtained actual water supply amount and the target water supply amount, and can control the closing of the second cold water valve (154a) and the second hot water valve (154b) based on the identification that the actual water supply amount has reached the target water supply amount.

[0412] The processor (220) can recognize the number of pulses from a first point in time when the cold water level reaches a first reference level to a second point in time when the recognized water level reaches a set level, and can also recognize the water pressure of the cold water based on the amount of change in the number of pulses recognized between the first point in time and the second point in time. The water pressure of the cold water may be the water pressure of the second cold water pipe (153a).

[0413] The processor (220) can also recognize a first conversion constant corresponding to the water pressure of the recognized cold water from the information stored in the memory (230) and recognize the actual amount of cold water supplied to the tub (120) based on the recognized first conversion constant and the number of pulses.

[0414] The processor (220) may obtain a first difference value between the recognized first conversion constant and the first conversion constant stored in the memory (230), and compare the obtained first difference value with a pre-stored reference value to select either the first conversion constant stored in the memory (230) or the recognized first conversion constant.

[0415] The processor (220) can recognize the number of pulses from the third time point when the second hot water valve (154b) is opened to the fourth time point when the recognized water level reaches the second reference water level, and can also recognize the water pressure of the hot water based on the amount of change in the number of pulses recognized between the third time point and the fourth time point. The water pressure of the hot water may be the water pressure of the second hot water pipe (153b).

[0416] The processor (220) can also recognize a second conversion constant corresponding to the water pressure of the recognized hot water from the information stored in the memory (230) and recognize the actual amount of hot water supplied to the tub (120) based on the recognized second conversion constant and the number of pulses.

[0417] The processor (220) may obtain a second difference value between the recognized second conversion constant and the second conversion constant stored in the memory (230), and compare the obtained second difference value with a pre-stored reference value to select either the second conversion constant stored in the memory (230) or the recognized second conversion constant.

[0418] The processor (220) can also control the output unit (182) to output information on the recognized cold water pressure and hot water pressure.

[0419] The processor (220) can also control the output unit (182) to compare the recognized cold water pressure with the reference water pressure and output information about abnormal water pressure based on the fact that the recognized cold water pressure is lower than the reference water pressure.

[0420] The processor (220) can also control the output unit (182) to compare the recognized water pressure of hot water with the reference water pressure and output information about abnormal water pressure based on the fact that the recognized water pressure of hot water is lower than the reference water pressure.

[0421] The processor (220) may be implemented as a memory (not shown) that stores data regarding an algorithm for controlling the operation of components within the washing machine or a program that reproduces the algorithm, and a processor (not shown) that performs the aforementioned operations using the data stored in the memory. In this case, the memory and the processor may be implemented as separate chips. Alternatively, the memory and the processor may be implemented as a single chip.

[0422] The processor (220) can perform the above-described operation using data stored in the memory (230).

[0423] The processor (220) may include hardware such as a CPU or memory, and software such as a control program. For example, the processor (220) may include one or more processor chips that perform the aforementioned operations using an algorithm for controlling the operation of components within the washing machine, at least one memory that stores program-type data, and data stored in the at least one memory, or may include one or more processing cores.

[0424] The processor (220) may include a separate NPU that performs the operation of the artificial intelligence model, and may include a graphics-only processor (GPU), etc.

[0425] The memory (230) can store a correlation function for flow rate and water level.

[0426] The memory (230) can store information on conversion constants for each hydraulic pressure.

[0427] As illustrated in FIG. 9, information on conversion constants for each hydraulic pressure may include a table in which conversion constants for each hydraulic pressure are matched.

[0428] Information on the conversion constant for each hydraulic pressure may be obtained through testing.

[0429] The memory (230) can store a reference value for updating the conversion constant.

[0430] The memory (230) can store conversion constants recognized during previous washing machine operation.

[0431] The memory (230) can also store a reference conversion constant. The reference conversion constant may be information stored during the manufacturing of the washing machine.

[0432] The memory (230) can store information on the first reference water level and the second reference water level, and can store information on the set water level.

[0433] The second reference level may be a higher level than the first reference level.

[0434] The set level can be a level between the first reference level and the second reference level.

[0435] The memory (230) can store information on the reference water pressure, and can also store cause information on abnormal water pressure corresponding to the water pressure difference.

[0436] The memory (230) can store data for an algorithm for controlling the operation of components in the washing machine or a program that reproduces the algorithm.

[0437] At least one component may be added or deleted to correspond to the performance of the components of the washing machine illustrated in Fig. 11. Furthermore, it will be readily apparent to those skilled in the art that the relative positions of the components may be altered to correspond to the performance or structure of the dryer.

[0438] Meanwhile, each component illustrated in FIG. 11 refers to software and / or hardware components such as a Field Programmable Gate Array (FPGA) and an Application Specific Integrated Circuit (ASIC).

[0439] Figure 13 is a control flowchart of a washing machine according to another embodiment.

[0440] The washing machine controls the opening of the second water supply valve (154) (322) based on the receipt of an operation start command from the input unit (181) (321). This allows water from an external water source to be directly supplied to the tub (120), and prevents water within the tub (120) from being absorbed into the laundry.

[0441] The washing machine receives first detection information from a water level sensor (191) during water supply, recognizes the water level of the tub based on the received first detection information (323), identifies whether the recognized water level has reached a second reference water level (324), and controls the closing of the second water supply valve (154) based on the identification that the recognized water level has reached the second reference water level (325).

[0442] The second reference water level may be the water level corresponding to the lowest cross-section of the drum (130).

[0443] The second reference water level (Ws) can be set to any point within the sensing range (hs) (see Fig. 3).

[0444] The washing machine obtains the number of pulses per hour and the water level per hour supplied to the tub (120) during water supply, obtains a correlation function for the flow rate and the water level based on the obtained number of pulses and the water level (326), and can recognize a conversion constant based on the obtained correlation function (327).

[0445] Obtaining a correlation function may include recognizing a section in which the number of pulses and the water level increase linearly based on the number of pulses supplied to the tub (120) per hour and the water level of the tub (120) per hour, and obtaining a correlation function for the flow rate and the water level in the recognized section.

[0446] The section in which the pulse number and water level increase linearly may be a section in which water is supplied from the first reference water level to the second reference water level.

[0447] The washing machine obtains (328) the difference between the recognized conversion constant and the conversion constant stored in the memory (230), and compares the obtained difference value with a pre-stored reference value.

[0448] The acquired difference value may be a constant difference value, which may be the absolute value of the difference between the recognized conversion constant and the conversion constant stored in the memory (230).

[0449] The conversion constant stored in the memory (230) may be a conversion constant acquired and stored through a test, or may be a conversion constant recognized and stored during a previous operation of the washing machine.

[0450] The washing machine maintains the storage of the conversion constant stored in the memory (230) based on the fact that the acquired difference value is less than the reference value (329) (330).

[0451] Based on the fact that the acquired difference value is greater than or equal to a reference value, the washing machine changes the conversion constant stored in the memory (230) to the recognized conversion constant and stores it (331). In other words, the washing machine updates the conversion constant stored in the memory.

[0452] The washing machine can control the opening of the second water supply valve (154) based on the recognition of the conversion constant so that water supply for the washing cycle can be performed again.

[0453] The washing machine can recognize the actual amount of water supplied to the tub (120) based on the conversion constant stored in the memory (230) and the number of pulses received from the flow sensor (192) based on the difference value obtained during the water supply of the washing cycle or the rinsing cycle being less than the reference value.

[0454] The washing machine can recognize the actual amount of water supplied to the tub (120) based on the recognized conversion constant and the number of pulses received from the flow sensor (192) based on the difference value obtained during the water supply of the washing cycle or the rinsing cycle being greater than or equal to a reference value.

[0455] The washing machine can recognize the actual water supply amount during the washing cycle or the rinsing cycle, identify whether the actual water supply amount has reached the target water supply amount based on the recognized actual water supply amount and the target water supply amount, and control the closing of the second water supply valve (154) based on the identification that the actual water supply amount has reached the target water supply amount.

[0456] The washing machine can also control the output unit (182) to output information about the recognized actual water supply amount.

[0457] Figure 14 is a control configuration diagram of a washing machine according to another embodiment.

[0458] Another embodiment of a washing machine (1) includes a drive motor (140), a water supply device (150), a drainage device (170), an input unit (181), an output unit (182), a water level sensor (191), a flow sensor (192), a turbidity sensor (193), a conductivity sensor (194), a processor (240), and a memory (250).

[0459] The driving motor (140), water supply device (150), drainage device (170), input unit (181), output unit (182), water level sensor (191), flow rate sensor (192), turbidity sensor (193), and conductivity sensor (194) of the washing machine of another embodiment are the same as the driving motor (140), water supply device (150), drainage device (170), input unit (181), output unit (182), water level sensor (191), flow rate sensor (192), turbidity sensor (193), and conductivity sensor (194) of the washing machine of one embodiment, and thus, description thereof is omitted.

[0460] The control configuration of the washing operation, rinsing operation, draining operation, and dehydration operation of the processor (240) is the same as the control configuration of the washing operation, rinsing operation, draining operation, and dehydration operation of the processor (200) of one embodiment, and thus, description thereof is omitted.

[0461] A control configuration of a processor (240) of another embodiment that recognizes the actual water supply amount is described.

[0462] In a case where one flow sensor (192) is provided in the second water supply pipe (153) of the washing machine, a control configuration of a processor (240) of another embodiment that recognizes the actual water supply amount is described.

[0463] The processor (240) can control the opening of the second water supply valve (154) based on receiving a driving start command from the input unit (181), thereby allowing water from an external water source to be supplied directly to the tub (120).

[0464] The processor (240) can count the water supply time during which water is supplied to the tub (210).

[0465] The processor (240) can receive first detection information from a water level sensor (191) during water supply and second detection information from a flow rate sensor (192).

[0466] The processor (240) recognizes the water level of the tub based on the received first sensing information, identifies whether the recognized water level has reached the second reference water level, controls the closing of the second water supply valve (153) based on the recognition that the recognized water level has reached the second reference water level, and recognizes the counted water supply time.

[0467] The processor (240) can recognize the pressure (i.e., water pressure, P) of the water flowing in the second water supply pipe based on the recognized water supply time (t) and the recognized water supply amount (x).

[0468] P= x / t

[0469] The processor (240) compares the recognized water pressure with a preset water pressure. The preset water pressure may be information stored in the memory (250).

[0470] The processor (240) recognizes a conversion constant corresponding to the preset water pressure based on information stored in the memory when the difference between the recognized water pressure and the preset water pressure is less than or equal to the preset value.

[0471] The difference between the perceived water pressure and the preset water pressure may be the water pressure difference.

[0472] The processor (240) can obtain the number of pulses per hour and the water level per hour supplied to the tub (120) during water supply based on the difference between the recognized water pressure and the preset water pressure exceeding the preset value.

[0473] The processor (240) can obtain a correlation function for the flow rate and water level based on the obtained pulse number and water level, and recognize a conversion constant based on the obtained correlation function.

[0474] The processor (240) can recognize a section in which the number of pulses and the water level increase linearly based on the number of pulses supplied to the tub (120) per hour during the water supply and the water level per hour of the tub (120), obtain a correlation function for the flow rate and the water level in the recognized section, and recognize a conversion constant based on the obtained correlation function.

[0475] The processor (240) obtains a difference value between the recognized conversion constant and the conversion constant stored in the memory (250) and compares the obtained difference value with a pre-stored reference value.

[0476] The processor (240) maintains the storage of the conversion constant stored in the memory (250) based on the fact that the acquired difference value is less than the reference value.

[0477] The processor (240) can recognize the actual water supply amount supplied to the tub (120) based on the conversion constant stored in the memory (250) and the number of pulses received from the flow sensor (192) based on the fact that the acquired difference value is less than the reference value.

[0478] The processor (240) stores the recognized conversion constant in the memory (250) based on the fact that the acquired difference value is greater than or equal to a reference value, and can recognize the actual water supply amount supplied to the tub based on the recognized conversion constant and the number of pulses received from the flow sensor.

[0479] The processor (240) updates the conversion constant stored in the memory to a conversion constant recognized by the correlation function based on the fact that the acquired difference value is greater than or equal to the reference value.

[0480] The processor (240) can control the opening of the second water supply valve (154) based on the recognition of the conversion constant, thereby allowing the water supply for the washing cycle to be performed again.

[0481] The processor (240) can identify whether the actual water supply amount has reached the target water supply amount based on the recognized actual water supply amount and the target water supply amount, and can control the closing of the second water supply valve (154) based on the identification that the actual water supply amount has reached the target water supply amount.

[0482] The processor (240) can also control the output unit (182) to output information about the recognized actual water supply amount.

[0483] The processor (240) can also control the output unit (182) to output information about the recognized water pressure.

[0484] The processor (240) can also control the output unit (182) to output information about the recognized actual water supply amount.

[0485] The processor (240) can also control the output unit (182) to compare the recognized water pressure with the reference water pressure and output information about the abnormal water pressure based on the recognized water pressure being lower than the reference water pressure.

[0486] The processor (240) can also control the output unit (182) to analyze the cause of the abnormal water pressure based on the difference between the recognized water pressure and the reference water pressure and output information about the analyzed cause.

[0487] In a case where flow sensors (192a, 192b) are respectively provided in the second cold water pipe (153a) and the second hot water pipe (153b) of the washing machine, a control configuration of a processor (240) of another embodiment will be described (see FIG. 5).

[0488] The processor (240) can recognize the amount of water supplied through the second cold water pipe (153a) and the second hot water pipe (153b) based on the information on selection of hot and cold water received through the input unit (181).

[0489] The processor (240) can control the opening of the second cold water valve (154a) based on receiving an operation start command from the input unit (181), thereby allowing water from an external water source to be supplied directly to the tub (120).

[0490] The processor (240) can count the first water supply time during which cold water is supplied to the tub during the cold water supply.

[0491] The processor (240) can receive first detection information from a water level sensor (191) during the supply of cold water and second detection information from a first flow rate sensor (192a).

[0492] The processor (240) can recognize the water level of cold water in the tub based on the received first sensing information, and can recognize the amount of cold water supplied to the tub based on the second sensing information.

[0493] It identifies whether the level of the recognized cold water has reached the set level, and recognizes the counted first-grade water time based on the identification that the level of the recognized cold water has reached the set level.

[0494] The set level can be approximately 50% lower than the second reference level.

[0495] The processor (240) can recognize the pressure of cold water flowing in the second cold water pipe (153a) (i.e., the first water pressure) based on the recognized first water supply time and the recognized cold water supply amount.

[0496] The processor (240) compares the recognized first water pressure with a preset first water pressure. The preset first water pressure may be information stored in the memory (250).

[0497] The processor (240) recognizes a first conversion constant corresponding to the preset first hydraulic pressure based on information stored in the memory (250) when the difference between the recognized first hydraulic pressure and the preset first hydraulic pressure is less than or equal to the preset value.

[0498] The processor (240) can obtain the number of pulses per hour and the water level per hour supplied to the tub (120) during water supply based on the difference between the recognized first water pressure and the preset first water pressure exceeding the preset value, obtain a correlation function for the flow rate and the water level based on the obtained number of pulses and the water level, and recognize the first conversion constant based on the obtained correlation function.

[0499] The processor (240) can recognize a section in which the number of pulses and the water level increase linearly based on the number of pulses supplied to the tub (120) per hour during the water supply and the water level per hour of the tub (120), obtain a correlation function for the flow rate and the water level in the recognized section, and recognize a first conversion constant based on the obtained correlation function.

[0500] The processor (240) obtains a first difference value between the recognized first conversion constant and the first conversion constant stored in the memory (250) and compares the obtained first difference value with a pre-stored reference value.

[0501] The processor (240) can recognize the actual amount of cold water supplied to the tub (120) based on the first conversion constant stored in the memory (250) and the number of pulses received from the first flow sensor (192a) based on the fact that the acquired first difference value is less than the reference value.

[0502] The processor (240) stores the recognized first conversion constant in the memory (250) based on the fact that the acquired first difference value is greater than or equal to the reference value, and can recognize the actual amount of cold water supplied to the tub based on the recognized first conversion constant and the number of pulses received from the first flow sensor (192a).

[0503] The processor (240) can control the opening of the second hot water valve (154b) based on the recognition of the first conversion constant.

[0504] The processor (240) can receive first detection information from a water level sensor (191) during the supply of hot water, and second detection information from a second flow rate sensor (192b).

[0505] The processor (240) can recognize the water level within the tub based on the received first sensing information and can recognize the amount of hot water supplied within the tub based on the received second sensing information. Here, the water level within the tub may be a combined level of cold water and hot water.

[0506] The processor (240) identifies whether the recognized water level has reached the second reference water level, and recognizes the counted second water level time based on the identification that the recognized water level has reached the second reference water level.

[0507] The processor (240) can recognize the pressure (i.e., second water pressure) of hot water flowing in the second hot water pipe (153b) based on the recognized second hot water supply time and the recognized hot water supply amount.

[0508] The processor (240) compares the recognized second water pressure with a preset second water pressure. The preset second water pressure may be information stored in the memory (250).

[0509] The processor (240) recognizes a second conversion constant corresponding to the preset second water pressure based on information stored in the memory (250) when the difference between the recognized second water pressure and the preset second water pressure is less than or equal to the preset value.

[0510] The processor (240) can obtain the number of pulses per hour and the water level per hour supplied to the tub (120) during the supply of hot water based on the difference between the recognized second water pressure and the preset second water pressure exceeding the preset value, obtain a correlation function for the flow rate and the water level based on the obtained number of pulses and the water level, and recognize a second conversion constant based on the obtained correlation function.

[0511] The processor (240) can recognize a section in which the number of pulses and the water level increase linearly based on the number of pulses supplied to the tub (120) per hour during the supply of hot water and the water level per hour of the tub (120), obtain a correlation function for the flow rate and the water level in the recognized section, and recognize a second conversion constant based on the obtained correlation function.

[0512] The processor (240) obtains a second difference value between the recognized second conversion constant and the second conversion constant stored in the memory (250) and compares the obtained second difference value with a pre-stored reference value.

[0513] The processor (240) can recognize the actual amount of hot water supplied to the tub (120) based on the second conversion constant stored in the memory (250) and the number of pulses received from the second flow sensor (192b) based on the fact that the acquired second difference value is less than the reference value.

[0514] The processor (240) stores the recognized second conversion constant in the memory (250) based on the fact that the acquired second difference value is greater than or equal to the reference value, and can recognize the actual amount of hot water supplied to the tub based on the recognized second conversion constant and the number of pulses received from the second flow sensor (192b).

[0515] The processor (250) can recognize the actual hot water supply amount (m2) based on the recognized second conversion constant (k2) and the pulse number (n2) of the second flow sensor.

[0516] The processor (240) can control the opening of the second water supply valve (154) based on the recognition of the first and second conversion constants, thereby allowing the water supply for the washing process to be performed again.

[0517] The processor (240) can identify whether the actual water supply amount has reached the target water supply amount based on the recognized actual water supply amount and the target water supply amount, and can control the closing of the second cold water valve (154a) and the hot water valve (154b) based on the identification that the actual water supply amount has reached the target water supply amount.

[0518] The processor (240) can also control the output unit (182) to output information on the recognized actual cold water supply amount and the actual hot water supply amount.

[0519] The processor (240) can also control the output unit (182) to output information about the recognized first and second hydraulic pressures.

[0520] The processor (240) compares the recognized first water pressure with the reference water pressure, compares the recognized second water pressure with the reference water pressure, and controls the output unit (182) to output information about abnormal cold water pressure based on the recognized first water pressure being lower than the reference water pressure, and also controls the output unit (182) to output information about abnormal hot water pressure based on the recognized second water pressure being lower than the reference water pressure.

[0521] The memory (250) can store correlation functions for flow rate and water level.

[0522] The memory (250) can store information on conversion constants for each hydraulic pressure.

[0523] The memory (250) can store a reference value for updating the conversion constant.

[0524] The memory (250) can store conversion constants recognized during previous washing machine operation.

[0525] The memory (250) can store a reference conversion constant. The reference conversion constant may be a conversion constant set during the manufacturing of the washing machine.

[0526] The memory (250) can store information on the first reference water level and the second reference water level, and can store information on the set water level.

[0527] The second reference level may be a higher level than the first reference level.

[0528] The set level can be a level between the first reference level and the second reference level.

[0529] The memory (250) can store information on the reference water pressure, and can also store cause information on abnormal water pressure corresponding to the water pressure difference.

[0530] The memory (250) can store data for an algorithm for controlling the operation of components in the washing machine or a program that reproduces the algorithm.

[0531] At least one component may be added or deleted to correspond to the performance of the components of the washing machine illustrated in Fig. 14. Furthermore, it will be readily apparent to those skilled in the art that the relative positions of the components may be altered to correspond to the performance or structure of the dryer.

[0532] Meanwhile, each component illustrated in FIG. 14 refers to software and / or hardware components such as a Field Programmable Gate Array (FPGA) and an Application Specific Integrated Circuit (ASIC).

[0533] Figure 15 is a control flowchart of a washing machine according to another embodiment.

[0534] The washing machine controls the opening of the second water supply valve (154) (342) based on the receipt of an operation start command from the input unit (181) (341). This allows water from an external water supply source to be supplied directly to the tub (120).

[0535] The washing machine can count the water supply time during which water is supplied to the tub (210) during water supply (343).

[0536] The washing machine receives first detection information from a water level sensor (191) during water supply, recognizes the water level of the tub based on the received first detection information (344), identifies whether the recognized water level has reached a second reference water level (345), and controls the closing of the second water supply valve (153) based on the recognition that the recognized water level has reached the second reference water level, and recognizes the counted water supply time (346).

[0537] The washing machine receives second sensing information from the flow sensor (192), recognizes the water supply amount based on the received second sensing information (347), and can recognize the water pressure of the second water supply pipe (153) based on the recognized water supply amount and recognized water supply time (348).

[0538] The washing machine obtains a difference value between the recognized water pressure and the preset water pressure (349), and based on the obtained difference value being less than or equal to the preset value (350), recognizes a conversion constant corresponding to the preset water pressure based on information stored in the memory (351).

[0539] The washing machine can obtain the number of pulses per hour and the water level per hour supplied to the tub (120) during water supply based on whether the difference between the recognized water pressure and the preset water pressure exceeds the preset value (352).

[0540] The washing machine can obtain a correlation function for the flow rate and water level based on the obtained pulse number and water level (353), and recognize a conversion constant based on the obtained correlation function (354).

[0541] Obtaining the correlation function may include recognizing a section in which the pulse count and water level increase linearly, and obtaining a correlation function for the flow rate and water level in the recognized section.

[0542] The washing machine obtains (355) the difference between the recognized conversion constant and the conversion constant stored in the memory (250), and compares the obtained difference value with a pre-stored reference value.

[0543] The conversion constant stored in the memory (250) may be a reference conversion constant or a conversion constant updated during the previous operation of the washing machine.

[0544] The washing machine can maintain the storage of the conversion constant stored in the memory (250) based on the fact that the acquired difference value is less than the reference value (356) (257).

[0545] The washing machine can store the conversion constant recognized by the correlation function in the memory (250) based on the fact that the acquired difference value is greater than or equal to a reference value (358). That is, the conversion constant stored in the memory (250) can be updated. In this case, the washing machine can also store the correlation function in the memory.

[0546] The washing machine can control the opening of the second water supply valve (154) based on the recognition of the conversion constant so that water supply for the washing cycle can be performed again.

[0547] The washing machine can recognize the actual water supply amount based on the conversion constant in operation 351, 357 or 358 and the pulse number of the flow sensor.

[0548] The washing machine can identify whether the actual water supply amount has reached the target water supply amount based on the recognized actual water supply amount and the target water supply amount, and can control the closing of the second water supply valve (154) based on the identification that the actual water supply amount has reached the target water supply amount.

[0549] Meanwhile, the disclosed embodiments may be implemented in the form of a recording medium storing computer-executable instructions. The instructions may be stored in the form of program code, and when executed by a processor, may generate program modules to perform the operations of the disclosed embodiments. The recording medium may be implemented as a computer-readable recording medium.

[0550] Computer-readable storage media include all types of storage media that store instructions that can be deciphered by a computer. Examples include read-only memory (ROM), random access memory (RAM), magnetic tape, magnetic disks, flash memory, and optical data storage devices.

[0551] The disclosed embodiments have been described with reference to the attached drawings as described above. Those skilled in the art will understand that the present invention can be implemented in forms other than the disclosed embodiments without altering the technical spirit or essential features of the present invention. The disclosed embodiments are illustrative and should not be construed as limiting.

Claims

1. Tub; A water supply pipe supplying water to the above tub; A water supply valve provided in the above water supply pipe and controlling the supply of water; A flow sensor provided in the above water supply pipe and detecting the amount of water flowing in the above water supply pipe; a water level sensor for detecting the water level of the above tub; and A washing machine including a processor that recognizes a conversion constant of the flow sensor based on first detection information received from the water level sensor and second detection information received from the flow sensor, and recognizes an actual amount of water supplied to the tub based on the recognized conversion constant and the second detection information.

2. In paragraph 1, further comprising a memory for storing information about the conversion constant for each hydraulic pressure; A washing machine in which the processor recognizes the water level of the tub based on the first sensing information during the water supply, recognizes the water supply time based on the recognized water level reaching the reference water level, recognizes the water pressure of the water supply pipe based on the recognized water supply time and the second sensing information, and recognizes the conversion constant of the flow sensor corresponding to the recognized water pressure based on the information of the memory during the water supply of the washing cycle.

3. In paragraph 2, Including more output sections, A washing machine in which the processor controls the output unit to output information about the recognized water pressure, recognizes whether the water pressure of the water supply pipe is normal based on the recognized water pressure and the reference water pressure, and controls the output unit to output information about the abnormality based on the water pressure of the water supply pipe being recognized as abnormal.

4. In paragraph 2, Further comprising a drum provided inside the tub and rotatable within the tub; The above standard water level is the height from the lowest section of the tub to the lowest section of the drum in the washing machine.

5. In the second paragraph, the processor, A washing machine that obtains a water pressure difference value between the recognized water pressure and the preset water pressure, and recognizes a conversion constant of the flow sensor corresponding to the preset water pressure based on information stored in the memory based on the water pressure difference value being less than or equal to the preset value.

6. In the second paragraph, the processor, A washing machine that obtains a water pressure difference value between the recognized water pressure and the preset water pressure, obtains a correlation function for the first sensing information and the second sensing information during the water supply based on the water pressure difference value exceeding the preset value, and recognizes the conversion constant based on the obtained correlation function.

7. In paragraph 6, The above memory stores the conversion constants updated during the previous washing operation, A washing machine in which the processor obtains a constant difference value between a conversion constant recognized by the correlation function and a conversion constant stored in the memory, and maintains storage of the conversion constant stored in the memory based on the obtained constant difference value being less than a reference value, and updates the conversion constant stored in the memory to a conversion constant recognized by the correlation function based on the obtained constant difference value being greater than or equal to the reference value.

8. In paragraph 1, A drain pipe provided at the bottom of the above tub; and Further comprising a drain pump provided in the above drain pipe, The water level sensor is a washing machine that is connected to the drain pipe and detects the water level of the drain pipe and the tub.

9. In the first paragraph, the processor, A washing machine that recognizes the water level of the tub based on first detection information received from the water level sensor during the water supply of the washing cycle, obtains a correlation function for the first detection information and the second detection information based on the recognized water level reaching a reference water level, and recognizes the conversion constant based on the obtained correlation function.

10. In paragraph 9, The above memory stores the conversion constants updated during the previous washing operation, A washing machine in which the processor obtains a constant difference value between a conversion constant recognized by the correlation function and a conversion constant stored in the memory, and maintains storage of the conversion constant stored in the memory based on the obtained constant difference value being less than a reference value, and updates the conversion constant stored in the memory to a conversion constant recognized by the correlation function based on the obtained constant difference value being greater than or equal to the reference value.

11. The driving start command controls the opening of the water supply valve based on the start command being received, Recognize the conversion constant of the flow sensor based on the first detection information received from the water level sensor during water supply to the tub and the second detection information received from the flow sensor, Recognize the actual water supply amount supplied to the tub based on the above recognized conversion constant and the second sensing information, A control method for a washing machine that controls water supply during a washing cycle or a rinsing cycle based on the above-described recognized actual water supply amount.

12. In the 11th paragraph, recognizing the conversion constant comprises: Recognize the water level of the tub based on the first sensing information during the above water supply, Recognize the water supply time based on the above recognized water level reaching the reference water level, Recognize the water pressure of the water supply pipe based on the recognized water supply time and the second sensing information, Recognizing the conversion constant corresponding to the recognized water pressure based on information about the conversion constant for each water pressure stored in the memory, A washing machine control method, wherein the above reference water level is the height from the lowest section of the tub to the lowest section of the drum provided within the tub.

13. In the 11th paragraph, recognizing the conversion constant comprises: Recognize the water level of the tub based on the first sensing information during the above water supply, Recognize the water supply time based on the above recognized water level reaching the reference water level, Recognize the water pressure of the water supply pipe based on the recognized water supply time and the second sensing information, Obtain the difference value of water pressure between the recognized water pressure and the preset water pressure, A control method for a washing machine, comprising recognizing the conversion constant corresponding to the preset water pressure based on information about the conversion constant for each water pressure stored in the memory based on the water pressure difference value being less than or equal to a preset value.

14. In the 11th paragraph, recognizing the conversion constant comprises: Recognize the water level of the tub based on the first detection information received from the water level sensor during the water supply of the washing cycle, Obtaining a correlation function for the first sensing information and the second sensing information based on the recognized water level reaching the reference water level, A control method for a washing machine, comprising recognizing the conversion constant based on the obtained correlation function.

15. In paragraph 14, Obtain the constant difference value between the conversion constant recognized by the above correlation function and the conversion constant stored in memory, Maintaining the storage of the conversion constant stored in the memory based on the fact that the obtained constant difference value is less than the reference value, A control method for a washing machine, further comprising updating the conversion constant stored in the memory to a conversion constant recognized by the correlation function based on the obtained constant difference value being greater than or equal to the reference value.

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