Laundry appliance and method of weighing thereof

Abstract

The embodiment of the application provides a laundry equipment and a weighing method thereof, and relates to the technical field of laundry equipment, and aims to at least solve the problems of low precision of a laundry weight value calculated by using a single technical index value, poor washing effect and poor user experience in the related art. The laundry equipment comprises a controller, a motor and an acquisition device connected with the controller; the controller is configured to: after the motor runs at a first preset rotating speed for a first preset time, control the acquisition device to acquire a first current and a first voltage of the motor to determine a first target power; after the motor runs at a second preset rotating speed for a second preset time, control the acquisition device to acquire a second current and a second voltage of the motor to determine a second target power; according to a corresponding relationship between a power difference and a laundry weight, determine a laundry weight corresponding to a target power difference as a target weight of a target laundry; the target power difference is a difference value of the second target power and the first target power.

Description

Technical Field

[0001] This application relates to the field of laundry equipment technology, and more particularly to laundry equipment and its weighing method. Background Technology

[0002] As people's living standards improve, the performance requirements for washing machines are also increasing. Therefore, fully automatic washing machines are developing towards greater energy efficiency, environmental friendliness, and intelligence. Since the weight of the clothes inside the washing machine determines the water consumption and washing time, and the water consumption and washing time directly affect the washing effect, water consumption, and power consumption, accurately determining the weight of the clothes inside the washing machine has become a key point for achieving energy efficiency, environmental friendliness, and intelligence in washing machines.

[0003] In related technologies, washing machines typically obtain the weight of clothes inside the machine through a single technical indicator, such as the motor's rotation speed or motor current. The weight value calculated from these single technical indicators is not very accurate, resulting in poor washing performance and a poor user experience. Summary of the Invention

[0004] This application provides a laundry device and a weighing method thereof, which at least solves the problem in the related art that the accuracy of the weighing value of clothes calculated by using a single technical indicator value is low, resulting in poor washing effect and poor user experience.

[0005] In a first aspect, a washing machine is provided, comprising a controller, a motor and a data acquisition device connected to the controller; the motor is used to drive the washing machine to rotate; the data acquisition device is used to acquire the current and voltage of the motor; the controller is configured to: after the motor runs at a first preset speed for a first preset time, control the data acquisition device to acquire the first current and first voltage of the motor to determine a first target power; after the motor runs at a second preset speed for a second preset time, control the data acquisition device to acquire the second current and second voltage of the motor to determine a second target power; the second preset speed is greater than the first preset speed; based on the correspondence between the power difference and the weight of the clothes, the weight of the clothes corresponding to the target power difference is determined as the target weight of the target clothes; the target power difference is the difference between the second target power and the first target power.

[0006] The aforementioned first preset speed and second preset speed correspond to each other. Furthermore, the aforementioned first preset time is set in correspondence with the first preset speed to ensure that the first current and first voltage are collected under stable operation at the first preset speed, thereby guaranteeing the stability of the first current and first voltage and avoiding the problem of low accuracy of the first target power due to the use of unstable current or voltage.

[0007] Similarly, the second preset time and the second preset speed are set to ensure that the second current and the second voltage are collected under the condition of stable operation at the first preset speed, so as to ensure the stability of the second current and the second voltage and avoid the problem of low accuracy of the second target power due to the use of unstable current or voltage.

[0008] Furthermore, the determination of the first and second target powers was based on the positive correlation between the motor's current, voltage, and power.

[0009] It should be noted that as the weight of the laundry load increases, the resistance to the washing machine motor's rotation also increases. Furthermore, as the washing machine's rotational speed increases, the motor's rotor speed, the strength of the rotating magnetic field, and the input current also increase, along with a corresponding change in the motor's voltage, thus increasing the motor's power. Therefore, based on the above working principle of washing machines, there is a positive correlation between the weight of the laundry load and the change in power.

[0010] The technical solution provided in this application provides at least the following beneficial effects: The washing equipment first collects the current and voltage of the motor under two different preset speeds during stable operation using a data acquisition device, thereby determining the two target powers of the motor at the two stable speeds, and thus obtaining the target power difference between the two target powers. Then, based on the pre-set correspondence between the power difference and the weight of the clothes in the washing equipment, the weight of the clothes corresponding to the target power difference is obtained, and this corresponding weight of the clothes is determined as the target weight of the clothes. Therefore, during the execution of various washing programs, the target weight determined by this washing equipment is based on two parameters: current and voltage. Compared with the target weight determined by a single parameter in related technologies, the target weight determined by this washing equipment is more accurate, thus making the operating parameters (such as water consumption, washing time, and detergent usage) determined based on the target weight more precise when the washing equipment executes the washing program, thereby improving the washing effect and enhancing the user experience.

[0011] In some embodiments, the controller executes the control acquisition device to acquire a first current and a first voltage of the motor to determine a first target power, specifically configured to: acquire a plurality of first currents and a plurality of first voltages; determine the average value of the plurality of first currents as a first target current, and determine the average value of the plurality of first voltages as a first target voltage; and determine the power corresponding to the first target current and the first target voltage as the first target power based on the positive correlation between the motor's current, voltage and power.

[0012] The aforementioned multiple first currents and multiple first voltages correspond one-to-one.

[0013] In addition, based on the first current and first voltage obtained above, before determining the average value after obtaining multiple first currents and multiple first voltages, the multiple first currents and multiple first voltages can be smoothed to remove the unevenly distributed first currents and first voltages among the multiple first currents and multiple voltages.

[0014] In this embodiment, to avoid the influence of abnormal voltage or current in the case of sudden abnormality in the first current and the first voltage collected above, the first target power is determined based on the average value of multiple first currents and the average value of multiple first voltages to ensure the accuracy of the first target power.

[0015] In some embodiments, when the controller executes the control acquisition device to acquire the second current and the second voltage of the motor to determine the second target power, it is specifically configured to: acquire multiple second currents and multiple second voltages; determine the average value of the multiple second currents as the second target current; and determine the average value of the multiple second voltages as the second target voltage; and determine the power corresponding to the second target current and the second target voltage as the second target power based on the positive correlation between the motor's current, voltage and power.

[0016] As one method of acquisition, after determining that the motor is running stably at a second preset speed, different second currents and different second voltages can be collected at different time intervals within a preset time threshold to obtain multiple second currents and multiple second voltages.

[0017] As another method of acquisition, after determining that the motor is running stably at the second preset speed, different second currents and different second voltages can be collected within a preset number of rotations of the inner drum of the washing equipment, so as to obtain multiple second currents and multiple second voltages.

[0018] Based on the second current and second voltage obtained above, before determining the average value of the multiple second currents and multiple second voltages, the multiple second currents and multiple second voltages can also be smoothed. The smoothing process is the same as the processing process of multiple first currents and multiple first voltages in the above embodiment, and will not be described again here.

[0019] In this embodiment, to avoid the influence of abnormal voltage or current in the event of a sudden abnormality in the collected second current and second voltage, the second target power is determined based on the average value of multiple collected second currents and the average value of multiple collected second voltages to ensure the accuracy of the second target power.

[0020] In some embodiments, the controller is further configured to: determine a first target torque corresponding to a first target power and a second target torque corresponding to a second target power, based on the relationship between the motor's power, speed, and torque; and determine a first rated weight corresponding to a first target torque and a second rated weight corresponding to a second target torque, based on the relationship between the motor's torque and rated weight; the rated weight represents the maximum weight of the motor load under a certain torque.

[0021] In some implementations, torque is also referred to as moment.

[0022] The relationship between the power, speed and torque of the above-mentioned motor can be expressed by using a torque function or a power model to represent the relationship between the three parameters: power, speed and torque.

[0023] In this embodiment, the controller first obtains the first target torque and the second target torque based on the relationship between the motor's power, speed, and torque. Then, by combining the relationship between the motor's torque and rated weight, it obtains the first rated weight and the second rated weight that the motor can handle. The first rated weight and the second rated weight are used as the basis for judging whether the target weight is reasonable, so as to further ensure the accuracy of the target weight.

[0024] In some embodiments, the controller is further configured to: determine the operating parameters of the washing machine based on the target weight when the target weight is greater than or equal to a first rated weight and less than or equal to a second rated weight.

[0025] The above operating parameters include at least one or more of the following: washing time, spin-drying time, water intake, etc.

[0026] In this embodiment, after determining that the target weight is within a reasonable range based on the target weight range when the target weight is accurate, the operating parameters of the washing equipment are adjusted using the target weight to ensure the accuracy of the operating parameters, thereby ensuring the reliability of the washing equipment during operation.

[0027] In some embodiments, the controller is further configured to send a warning message when the target weight is less than a first rated weight or greater than a second rated weight, the warning message indicating that the target weight is inaccurate.

[0028] In this embodiment, after determining that the target weight is unreasonable, a warning message is issued to alert the user that the washing equipment has a weighing malfunction, thereby reducing the possibility of the washing equipment continuing to execute the washing program under malfunction conditions.

[0029] In some embodiments, the first current and the second current both include current in the first direction and current in the second direction, and the first voltage and the second voltage both include voltage in the first direction and voltage in the second direction.

[0030] Secondly, a weighing method for a washing machine is provided. The weighing method includes: after the motor runs at a first preset speed for a first preset time, controlling a data acquisition device to acquire a first current and a first voltage of the motor to determine a first target power; after the motor runs at a second preset speed for a second preset time, controlling the data acquisition device to acquire a second current and a second voltage of the motor to determine a second target power; the second preset speed is greater than the first preset speed; based on the correspondence between the power difference and the weight of the clothes, the weight of the clothes corresponding to the target power difference is determined as the target weight of the target clothes; the target power difference is the difference between the second target power and the first target power.

[0031] In some embodiments, controlling the acquisition device to acquire a first current and a first voltage of the motor to determine a first target power specifically includes: acquiring a plurality of first currents and a plurality of first voltages; determining the average value of the plurality of first currents as a first target current, and determining the average value of the plurality of first voltages as a first target voltage; and determining the first target power corresponding to the first target current and the first target voltage according to the positive correlation between current, voltage and the target power.

[0032] In some embodiments, controlling the acquisition device to acquire a second current and a second voltage of the motor to determine a second target power specifically includes: acquiring a plurality of second currents and a plurality of second voltages; determining the average value of the plurality of second currents as a second target current; and determining the average value of the plurality of second voltages as a second target voltage; and determining the second target power corresponding to the second target current and the second target voltage according to the positive correlation between current, voltage and the target power.

[0033] Thirdly, embodiments of this application provide a computer-readable storage medium storing instructions that, when executed on any of the aforementioned devices, cause the devices to perform the weighing method of any of the aforementioned laundry appliances.

[0034] Fourthly, embodiments of this application provide a chip, including: a processor and a memory; the memory is used to store computer execution instructions, the processor is connected to the memory, and when the chip is running, the processor executes the computer execution instructions stored in the memory to cause the chip to execute any of the above-mentioned weighing methods of the washing equipment.

[0035] Fifthly, embodiments of this application provide a computer program product containing instructions that, when run on any of the aforementioned devices, cause the device to execute the weighing method of any of the aforementioned washing devices.

[0036] In the embodiments of this application, the names of the components of the above-mentioned device do not limit the device itself. In actual implementation, these components may appear under other names. As long as the function of each component is similar to that of the embodiments of this application, it falls within the scope of the claims of this application and its equivalents.

[0037] Furthermore, the technical effects of any of the design methods in aspects two through five can be found in the technical effects of the different design methods in aspect one above, and will not be repeated here. Attached Figure Description

[0038] The accompanying drawings are provided to further understand the technical solutions of the present invention and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of the present invention and do not constitute a limitation on the technical solutions of the present invention.

[0039] Figure 1 This is a schematic diagram of the structure of a laundry device provided in an embodiment of this application;

[0040] Figure 2 A circuit system architecture diagram of a washing machine provided in an embodiment of this application;

[0041] Figure 3 A flowchart illustrating a weighing method for a laundry device provided in this application embodiment;

[0042] Figure 4 A flowchart illustrating another weighing method for a laundry device provided in this application embodiment;

[0043] Figure 5 A flowchart illustrating another weighing method for a laundry device provided in this application embodiment;

[0044] Figure 6 A flowchart illustrating another weighing method for a laundry device provided in this application embodiment;

[0045] Figure 7 A flowchart illustrating another weighing method for a laundry device provided in this application embodiment;

[0046] Figure 8 A flowchart illustrating another weighing method for a laundry device provided in this application embodiment;

[0047] Figure 9 This is a schematic diagram of the hardware structure of a controller provided in an embodiment of this application. Detailed Implementation

[0048] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0049] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0050] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, when describing pipelines, the terms "connected" and "linked" as used in this application have the meaning of establishing electrical connection. The specific meaning needs to be understood in conjunction with the context.

[0051] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0052] As people's living standards improve, the performance requirements for washing machines are also increasing. Therefore, fully automatic washing machines are developing towards greater energy efficiency, environmental friendliness, and intelligence. Since the weight of the clothes inside the washing machine determines the water consumption and washing time, and the water consumption and washing time directly affect the washing effect, water consumption, and power consumption, accurately determining the weight of the clothes inside the washing machine has become a key point for achieving energy efficiency, environmental friendliness, and intelligence in washing machines.

[0053] In related technologies, washing machines typically obtain the weight of clothes inside the machine through a single technical indicator, such as the motor's rotation speed or motor current. The weight value calculated from these single technical indicators is not very accurate, resulting in poor washing performance and a poor user experience.

[0054] In view of this, embodiments of this application provide a washing machine. This washing machine first collects the current and voltage of a motor under two different preset speeds during stable operation using a data acquisition device, thereby determining two target powers of the motor at the two stable speeds, and thus obtaining the target power difference between the two target powers. Then, based on a pre-set correspondence between the power difference and the weight of the clothes in the washing machine, the weight of the clothes corresponding to the target power difference is obtained, and this corresponding weight of the clothes is determined as the target weight of the clothes.

[0055] Therefore, the target weight used by this washing machine during the execution of various washing programs is determined based on two parameters: current and voltage. Compared with related technologies that use a single parameter to determine the target weight, the target weight determined by this washing machine is more accurate. This makes the operating parameters (such as water consumption, washing time, and detergent usage) determined by the target weight more precise when the washing machine executes the washing program, thereby improving the washing effect and enhancing the user experience.

[0056] In this application embodiment, the clothing processing equipment can be a drum clothing processing equipment with drying function, i.e., a drum washing machine, or a pulsator clothing processing equipment with drying function, i.e., a pulsator washing machine, etc. To further describe the solution of this application, the mechanical structure of a clothing processing equipment provided in this application embodiment will be introduced next using a drum clothing processing equipment as an example.

[0057] refer to Figure 1 and Figure 2 The washing equipment 10 may include one or more of the following: housing 101, door 102, drum assembly 103, motor 104, water inlet valve 105, drain valve 106, display 107, controller 108, fan 109, drying heating element 110, data acquisition device 111, and temperature detection device 112.

[0058] In some embodiments, a motor 104 is used to drive the inner drum to rotate. A data acquisition device collects the motor's current and voltage to determine the motor's power. A water inlet valve 105 is used to continuously open for a first duration and continuously close for a second duration during the drying process of the washing machine, according to a control sequence, to continuously inject water into the water inlet channel for a first duration and stop injecting water into the water inlet channel for a second duration. A drying heating element 110 is used to heat the interior of the inner drum. A fan 109 is used to provide airflow into the interior of the inner drum. A temperature detection device 112 is used to detect the temperature inside the inner drum.

[0059] In some embodiments, the acquisition device 111 is mounted on the motor 104.

[0060] In some embodiments, a water level detection device (not shown) is also included for detecting the water level height in the inlet channel. Specifically, when the water level height is greater than or equal to a height threshold, a drainage process is performed to discharge the water from the inlet channel.

[0061] In some embodiments, the housing 101 may form the overall appearance of the washing machine 10 and seal the channels for contact between the interior and exterior of the washing machine 10, thereby preventing damage to electrical components. In the embodiments provided in this application, the housing 101 is generally arranged in a cuboid shape.

[0062] In some embodiments, the door 102 can be rotatably mounted on the housing 101, and the loading and unloading of clothes in the washing machine 10 can be achieved by opening and closing the door 102. Specifically, the door 102 can be rotatably connected to the housing 101 via a door hinge.

[0063] In some embodiments, the washing machine 10 further includes a water heating pipe 117, which is disposed at the bottom of the water inlet channel of the washing machine and is used to heat the water in the water inlet channel.

[0064] Optionally, the door 102 can be made of transparent material to allow users to easily observe the condition of the clothes while the washing machine 10 is working.

[0065] In some embodiments, the drum assembly 103 is disposed inside the housing 101 to perform functions such as washing or drying clothes.

[0066] In some embodiments, the tub assembly 103 may include an inner tub 1031 and an outer tub 1032. The inner tub 1031 is used to hold the target clothing and includes dehydration holes. The outer tub 1032 is used to store washing water. When the drain valve 106 is closed, since the outer tub 1032 does not have other drain outlets, the washing water can be temporarily stored in the outer tub 1032.

[0067] In some embodiments, a certain gap is left between the inner drum 1031 and the outer drum 1032. For example, when the washing machine performs a spin-drying program, the clothes remain in the inner drum 1031, and the control motor 104 drives the drum assembly 103 to rotate at the target spin-drying speed to spin-dry the clothes. During this process, water flows out from the spin-drying hole, flows through the gap between the inner drum 1031 and the outer drum 1032 into the drain pipe, thereby achieving the purpose of spin-drying or drying the clothes.

[0068] In some embodiments, the motor 104 is used to drive the drum assembly 103 to rotate, so that the rotating drum assembly 103 drives the clothes and washing water inside the drum assembly 103 to rotate, providing power support for the washing equipment 10 to run the washing program.

[0069] In some embodiments, the water inlet valve 105 can be used to control the flow of water into the drum assembly 103. For example, when the water inlet valve 105 receives a water inlet command from the controller 108, the water inlet valve 105 opens to allow water to flow into the drum assembly 103 of the washing machine 10, thereby enabling the washing machine 10 to perform subsequent programs such as washing and spin-drying.

[0070] In some embodiments, the drain valve 106 is used to receive a drain command from the controller 108 when the washing process is finished and drainage is required, and the drain valve 106 opens to allow the washing wastewater to be discharged smoothly.

[0071] In some embodiments, the display 107 may be a liquid crystal display or an organic light-emitting diode (OLED) display. The specific type, size, and resolution of the display 107 are not limited, and those skilled in the art will understand that the display 107 can be modified in terms of performance and configuration as needed.

[0072] In some embodiments, the display 107 may be used to display the control panel of the washing machine 10 or other image information. For example, the washing machine 10 may display current operating information of the washing machine on the display 107, such as the type of washing program, the duration and remaining duration of the washing program, and the amount of water used for washing.

[0073] In some embodiments, controller 108 refers to a device that can generate operation control signals based on instruction opcodes and timing signals to instruct the washing machine 10 to execute control instructions. Exemplarily, controller 108 can be a central processing unit (CPU), a network processor (NP), a digital signal processor (DSP), a programmable logic device (PLD), a microprocessor, a microcontroller, or any combination thereof. The controller can also be other devices with processing functions, such as circuits, devices, or software modules; this application embodiment does not impose any limitations on this.

[0074] For example, after detecting that the motor is running at a first preset speed for a first preset time, the controller 108 can start controlling the acquisition device to collect the first current and first voltage of the motor 104, and determine the first target power according to the preset correspondence between current, voltage and power. After the washing machine 10 continues to run for a certain period of time, after detecting that the motor 104 is running at a second preset speed for a second preset time, the controller starts controlling the acquisition device to collect the second current and second voltage of the motor to determine the second target power. Therefore, based on the second target power and the first target power, the target power difference is obtained, and the target weight of the target garment is estimated according to the preset correspondence between the power difference and the weight of the garment.

[0075] Figure 2 An exemplary circuit system architecture diagram of a washing machine 10 is shown.

[0076] like Figure 2 As shown, the washing equipment 10 may also include: an alarm device 114, a communication device 115, a human-computer interaction device 116, and a power supply 113.

[0077] Among them, the motor 104, water inlet valve 105, drain valve 106, display 107, early warning device 114, fan 109, drying heating tube 110, data acquisition device 111, temperature detection device 112, water heating tube 117, communication device 115, human-machine interaction device 116, and power supply 113 are all connected to the controller 108.

[0078] In some embodiments, the warning device 114 is used to send corresponding prompt information when starting or stopping the drying operation program to inform the user of the stage of the drying process.

[0079] In some embodiments, the communication device 115 is a component for communicating with external devices or external servers according to various communication protocol types. For example, the communication device may include at least one of a Wi-Fi chip, a Bluetooth communication protocol chip, a wired Ethernet communication protocol chip, or other network communication protocol chips or near-field communication protocol chips, as well as an infrared receiver.

[0080] In some embodiments, the washing machine 10 can transmit control signals and data signals with user-used terminal devices (e.g., mobile phones, tablets, wearable mobile devices, etc.), other home appliances (e.g., air conditioners, monitoring equipment, etc.), and servers via the communication device 115. For example, if a user issues a command to activate the quiet mode via a mobile phone, the washing machine 10 receives the command via the communication device 115, and in response to the user's command to activate the quiet mode, the controller 108 of the washing machine 10 activates the quiet mode.

[0081] In some embodiments, the human-computer interaction device 116 is used to enable interaction between the user and the washing machine 10. The human-computer interaction device 116 may include one or more of physical buttons, a touch display panel, or a voice recognition device. For example, the user can start the washing machine 10 by using the human-computer interaction device, and can also set the washing program to be run by the washing machine 10 by using the human-computer interaction device 116.

[0082] In some embodiments, the power supply 113, under the control of the controller 108, provides power supply support to the washing machine 10 by using the power input from the external power source.

[0083] Based on the above-mentioned laundry equipment, such as Figure 3 As shown in the figure, this application provides a weighing method, which includes the following steps:

[0084] Step S301: After the motor runs at a first preset speed for a first preset time, the acquisition device is controlled to acquire the first current and first voltage of the motor to determine the first target power.

[0085] The first preset speed and the second preset speed mentioned above correspond to each other. Typically, different motor performance corresponds to different first preset speeds and second preset speeds.

[0086] For example, when the washing machine is turned on and weighing is performed, if the first preset speed is 65 rpm, the corresponding second preset speed is set to 85 rpm. If the first preset speed is 70 rpm, the corresponding second preset speed is set to 90 rpm.

[0087] The first current and the second current mentioned above both include current in the first direction and current in the second direction, and the first voltage and the second voltage both include voltage in the first direction and voltage in the second direction.

[0088] For example, the first direction is the q-axis direction of the motor; the second direction is the d-axis direction of the motor.

[0089] The aforementioned first preset time is set in correspondence with the first preset speed to ensure that the first current and the first voltage are collected under stable operation at the first preset speed, thereby ensuring the stability of the first current and the first voltage and avoiding the problem of low accuracy of the first target power due to the use of unstable current or voltage.

[0090] Step S302: After the motor runs at a second preset speed for a second preset time, control the acquisition device to acquire the second current and the second voltage of the motor to determine the second target power.

[0091] The second preset speed is greater than the first preset speed. The second preset time and the first preset time can be the same length or different lengths, and both preset times can be set according to the specific performance of the motor.

[0092] Corresponding to the relationship between the first preset time and the first preset speed in step S301 above, the second preset time and the second preset speed are also set in the same way in this step, so as to ensure that the second current and the second voltage are collected under the condition of stable operation at the first preset speed, so as to ensure the stability of the second current and the second voltage, and avoid the problem of low accuracy of the second target power due to the use of unstable current or voltage.

[0093] Furthermore, the determination of the first and second target powers was based on the positive correlation between the motor's current, voltage, and power. This correlation can be represented in a table showing the relationship between different values ​​of current, voltage, and power, or it can be expressed using a power function or a power model.

[0094] For example, the positive correlation between current, voltage and power can be obtained by the following formula (1).

[0095] P = K1 * (Vd * Id + Vq * Iq) Formula (1)

[0096] Where K1 is a power constant greater than or equal to 2 and less than 7, P is power, Vd is voltage in the first direction, Vq is voltage in the second direction, Id is current in the first direction, and Id is current in the second direction.

[0097] The aforementioned K1 was obtained through numerous experiments and data analysis. Specifically, objects of varying weights, all with known weights, were placed inside the washing machine, and the relationship between current, voltage, and power was repeatedly measured. A large amount of data was obtained through multiple experiments, and then this data was fitted to obtain a curve showing a positive correlation between current, voltage, and power. This ensures accurate weight sensing in the washing machine, allowing it to select the appropriate water level, improving user satisfaction with washing performance, water consumption, and power consumption, while also providing a smart service experience.

[0098] Based on the data analysis results, when the washing equipment is about to enter the dehydration stage, the target weight is determined by the following parameters: when the first preset speed is selected as 75 rpm and the corresponding second preset speed is set to 100 rpm, K1 is 5.5.

[0099] Step S303: Based on the correspondence between power difference and clothing weight, determine the clothing weight corresponding to the target power difference as the target weight of the target clothing.

[0100] The relationship between power difference and clothing weight can be represented as follows: the weight of clothing is obtained by performing differentiation, integration or proportional calculation on the corresponding power difference.

[0101] The aforementioned target power difference is the difference between the second target power and the first target power. That is, the target power difference is obtained by subtracting the first target power from the second target power.

[0102] It should be noted that as the weight of the laundry load on the washing machine increases, the resistance to the motor's rotation also increases. Furthermore, as the washing machine's rotational speed increases, the motor's rotor speed, the strength of its rotating magnetic field, and the input current also increase. Simultaneously, the motor's voltage changes accordingly, resulting in an increase in the motor's power. Therefore, there is a positive correlation between the weight of the laundry load and the change in power, which aligns with the working principle of washing machines.

[0103] Figure 3 The technical solution shown brings at least the following benefits: When the washing equipment performs various washing programs, the target weight is determined based on two parameters: current and voltage. Compared with the target weight determined by a single parameter in related technologies, the target weight determined by this washing equipment is more accurate. This makes the operating parameters (such as water consumption, washing time, and detergent usage) determined based on the target weight more precise when the washing equipment performs the washing program, thereby improving the washing effect and enhancing the user experience.

[0104] As one implementation method, combined with Figure 3 ,like Figure 4 As shown, step S301 can be implemented in the following steps to obtain a more accurate first target power.

[0105] Step S301A: After the motor runs at a first preset speed for a first preset time, multiple first currents and multiple first voltages are collected; the average value of the multiple first currents is determined as the first target current, and the average value of the multiple first voltages is determined as the first target voltage.

[0106] Step S301B: Based on the positive correlation between the motor's current, voltage, and power, the power corresponding to the first target current and the first target voltage is determined as the first target power.

[0107] The aforementioned multiple first currents and multiple first voltages correspond one-to-one.

[0108] As one method of acquisition, after determining that the motor is running stably at a first preset speed, different first currents and different first voltages at different time intervals within a preset time threshold can be collected to obtain multiple first currents and multiple first voltages.

[0109] As another method of acquisition, after determining that the motor is running stably at a first preset speed, different first currents and different first voltages can be collected within a preset number of rotations of the inner drum of the washing equipment to obtain multiple first currents and multiple first voltages.

[0110] Based on the first current and first voltage obtained above, before determining the average value after obtaining multiple first currents and multiple first voltages, the multiple first currents and multiple first voltages can be smoothed to remove the unevenly distributed first currents and first voltages among the multiple first currents and multiple voltages.

[0111] For example, in the distribution curves formed by multiple first currents and multiple first voltages, the currents and voltages corresponding to the non-smooth points in the distribution curves are removed. These non-smooth points are those where the rate of change of the slope is too large.

[0112] In this embodiment, to avoid the influence of abnormal voltage or current in the event of a sudden abnormality in the first current and the first voltage collected above, the first target power is determined based on the average value of multiple first currents and the average value of multiple first voltages to ensure the accuracy of the first target power.

[0113] As another implementation method, combined with Figure 3 ,like Figure 5 As shown, step S302 can be implemented in the following steps to more accurately determine the second target power.

[0114] Step S302A: After the motor runs at a second preset speed for a second preset time, collect multiple second currents and multiple second voltages; determine the average value of the multiple second currents as the second target current; and determine the average value of the multiple second voltages as the second target voltage.

[0115] Step S302B: Based on the positive correlation between the motor's current, voltage, and power, determine the power corresponding to the second target current and the second target voltage as the second target power.

[0116] As one method of acquisition, after determining that the motor is running stably at a second preset speed, different second currents and different second voltages at different time intervals within a preset time threshold can be collected to obtain multiple second currents and multiple second voltages.

[0117] As another method of acquisition, after determining that the motor is running stably at the second preset speed, different second currents and different second voltages can be collected within a preset number of rotations of the inner drum of the washing equipment, so as to obtain multiple second currents and multiple second voltages.

[0118] Based on the second current and second voltage obtained above, before determining the average value of the multiple second currents and multiple second voltages, the multiple second currents and multiple second voltages can also be smoothed. The smoothing process is the same as the processing process of multiple first currents and multiple first voltages in the above embodiment, and will not be described again here.

[0119] In this embodiment, to avoid the influence of abnormal voltage or current in the event of a sudden abnormality in the collected second current and second voltage, the second target power is determined based on the average value of multiple collected second currents and the average value of multiple collected second voltages to ensure the accuracy of the second target power.

[0120] As one implementation method, combined with Figure 3 ,like Figure 6 As shown, after the controller completes step S303, the following steps can be performed to determine the weight range that the motor can withstand under different power and speed conditions.

[0121] Step S601: Based on the relationship between the motor's power, speed, and torque, determine the first target torque corresponding to the first target power and the second target torque corresponding to the second target power.

[0122] In this step, based on the relationship between the motor's power, speed, and torque, the first target torque is determined by the first target power and the torque corresponding to the first preset speed, and the second target torque is determined by the second target power and the torque corresponding to the second preset speed.

[0123] Step S602: Based on the correspondence between the motor torque and rated weight, determine the first rated weight corresponding to the first target torque and the second rated weight corresponding to the second target torque.

[0124] Rated weight represents the maximum weight of the motor load under a certain torque.

[0125] In this step, the motor's torque reflects the maximum weight the motor can bear, i.e., the rated weight. Based on this, the washing equipment has a pre-set correspondence between the rated weight and the torque.

[0126] In some implementations, torque is also referred to as moment.

[0127] The relationship between the power, speed and torque of the above-mentioned motor can be expressed by using a torque function or a power model to represent the relationship between the three parameters: power, speed and torque.

[0128] For example, the relationship between the three parameters of power, speed and torque can be expressed by the following formula (2).

[0129] Formula (2) Te = K2 * P / ω

[0130] Where K2 is a constant, Te is the motor torque, P is the motor power, and ω is the motor speed.

[0131] The value of K2 is typically between 9 and 16. Usually, K2 is 13.05.

[0132] In some embodiments, a range consisting of a first rated weight and a second rated weight is used as the target weight range, so that the target weight is determined to be reasonable by determining that the target weight is within the target weight range.

[0133] For example, if the first rated weight is 1 and the second rated weight is 9, then the target weight range [first rated weight, second rated weight] is [1, 9].

[0134] In this embodiment, the controller first obtains the first target torque and the second target torque based on the relationship between the motor's power, speed, and torque. Then, by combining the relationship between the motor's torque and rated weight, it obtains the first rated weight and the second rated weight that the motor can handle. The first rated weight and the second rated weight are used as the basis for judging whether the target weight is reasonable, so as to further ensure the accuracy of the target weight.

[0135] based on Figure 6 The specific implementation process for further judging the accuracy of the target weight using the target weight range formed by the first rated weight and the second rated weight (i.e., a range greater than or equal to the first rated weight and less than or equal to the second rated weight) is as follows: Figure 7 The steps are shown in the middle.

[0136] Step S701: When the target weight is greater than or equal to the first rated weight and less than or equal to the second rated weight, determine the operating parameters of the washing equipment based on the target weight.

[0137] The above operating parameters include at least one or more of the following: washing time, spin-drying time, water intake, etc.

[0138] In this implementation step, based on the target weight range when the target weight is accurate, after determining that the target weight is within a reasonable range, the operating parameters of the washing equipment are adjusted using the target weight to ensure the accuracy of the operating parameters, thereby ensuring the reliability of the washing equipment during operation.

[0139] In step S702, if the target weight is less than the first rated weight or greater than the second rated weight, a warning message is sent, indicating that the target weight is inaccurate.

[0140] In this implementation step, based on the target weight range when the target weight is accurate, if the target weight is determined to be in an unreasonable range, a warning message is issued to remind the user that the washing equipment has a weighing malfunction, so as to reduce the erroneous operation of the washing equipment continuing to execute the washing program in a malfunctioning state.

[0141] As one specific implementation method, through Figure 8 The weighing process of the laundry equipment is explained in detail below.

[0142] In step S801, the controller controls the detection device to detect the speed of the motor.

[0143] Step S802: Determine whether the motor speed has reached the first preset speed. If not, return to step S801; if yes, proceed to step S803.

[0144] Step S803: After detecting that the motor is running stably at the first preset speed, the first current and the first voltage in the q-axis direction and the d-axis direction of the motor are collected to obtain the first target power.

[0145] In this step, the first current and the first voltage are determined using 32-bit precision.

[0146] In step S804, determine whether the motor speed has reached the second preset speed. If yes, proceed to step S805; otherwise, return to step S804.

[0147] Step S805: After detecting that the motor is running stably at the second preset speed, the second current and the second voltage in the q-axis direction and the d-axis direction of the motor are collected to obtain the second target power.

[0148] In this step, the second current and the second voltage are determined using 32-bit precision.

[0149] Step S806: The difference between the second target power and the first target power is taken as the target power difference.

[0150] Step S807: Determine the target weight based on the correspondence between power difference and weight.

[0151] In this step, the target weight is determined with 16-bit precision.

[0152] Step S808: Determine whether the target weight is within the preset accuracy range. If yes, proceed to step S809; otherwise, return to step S801.

[0153] Step S809: Weighing complete, proceed to the relevant washing program after weighing.

[0154] As can be seen, the above mainly describes the solutions provided by the embodiments of this application from a methodological perspective. To achieve the above functions, the embodiments of this application provide corresponding hardware structures and / or software modules for executing each function. Those skilled in the art should readily recognize that, in conjunction with the modules and algorithm steps of the various examples described in the embodiments disclosed herein, the embodiments of this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed by hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this invention.

[0155] This application embodiment can divide the controller into functional modules according to the above method example. For example, each function can be divided into a separate functional module, or two or more functions can be integrated into one processing module. The integrated module can be implemented in hardware or as a software functional module. Optionally, the module division in this application embodiment is illustrative and only represents one logical functional division; other division methods may be used in actual implementation.

[0156] This application also provides a schematic diagram of the hardware structure of a controller. For example... Figure 9 As shown, the controller 108 includes a processor 901, and optionally, a memory 902 and a communication interface 903 connected to the processor 901. The processor 901, memory 902, and communication interface 903 are connected via a bus 904.

[0157] Processor 901 may be a central processing unit (CPU), a general-purpose processor, a network processor (NP), a digital signal processor (DSP), a microprocessor, a microcontroller, a programmable logic device (PLD), or any combination thereof. Processor 901 may also be any other device with processing capabilities, such as a circuit, device, or software module. Processor 901 may also include multiple CPUs, and processor 901 may be a single-core processor or a multi-core processor. Here, "processor" can refer to one or more devices, circuits, or processing cores used to process data (e.g., computer program instructions).

[0158] The memory 902 can be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or it can be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer. This application embodiment does not impose any limitations on this. The memory 902 can exist independently or be integrated with the processor 901. The memory 902 may contain computer program code. The processor 901 is used to execute the computer program code stored in the memory 902, thereby implementing the weighing method of the washing equipment provided in this application embodiment.

[0159] The communication interface 903 can be used to communicate with other devices or communication networks (such as Ethernet, radio access network (RAN), wireless local area network (WLAN), etc.). The communication interface 903 can be a module, circuit, transceiver, or any device capable of communication.

[0160] The 904 bus can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The 904 bus can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 9 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0161] This application also provides a computer-readable storage medium including computer-executable instructions that, when run on a computer, cause the computer to execute any of the weighing methods for laundry equipment provided in the above embodiments.

[0162] This application also provides a computer program product containing computer execution instructions, which, when run on a computer, causes the computer to execute any of the weighing methods for washing equipment provided in the above embodiments.

[0163] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented using software programs, implementation can be, in whole or in part, in the form of a computer program product. This computer program product includes one or more computer-executable instructions. When these computer-executable instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer-executable instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer-executable instructions can be transmitted from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device containing one or more servers, data centers, etc., that can be integrated with the medium. The available media can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., DVDs), or semiconductor media (e.g., solid-state disks, SSDs).

[0164] Although this application has been described herein in conjunction with various embodiments, those skilled in the art, by reviewing the accompanying drawings, the disclosure, and the appended claims, will understand and implement other variations of the disclosed embodiments in carrying out the claimed application. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude multiple instances. A single processor or other unit can implement several functions listed in the claims. While different dependent claims may recite certain measures, this does not mean that these measures cannot be combined to produce good results.

[0165] Although this application has been described in conjunction with specific features and embodiments, it is obvious that various modifications and combinations can be made thereto without departing from the spirit and scope of this application. Accordingly, this specification and drawings are merely exemplary illustrations of this application as defined by the appended claims, and are considered to cover any and all modifications, variations, combinations, or equivalents within the scope of this application. Clearly, those skilled in the art can make various alterations and modifications to this application without departing from the spirit and scope of this application. Thus, if such modifications and modifications of this application fall within the scope of the claims of this application and their equivalents, this application is also intended to include such modifications and modifications.

[0166] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A laundry appliance, characterized in that, Includes a controller, and a motor and a data acquisition device connected to the controller; The motor is used to drive the washing equipment to rotate; The acquisition device is used to acquire the current and voltage of the motor; The controller is configured to: After the motor runs at a first preset speed for a first preset time, the acquisition device is controlled to acquire the first current and the first voltage of the motor to determine the first target power; After the motor runs at a second preset speed for a second preset time, the acquisition device is controlled to acquire the second current and the second voltage of the motor to determine the second target power; the second preset speed is greater than the first preset speed. Based on the correspondence between power difference and clothing weight, the clothing weight corresponding to the target power difference is determined as the target weight of the target clothing; the target power difference is the difference between the second target power and the first target power. Based on the relationship between the power, speed and torque of the motor, the first target torque corresponding to the first target power and the second target torque corresponding to the second target power are determined respectively. Based on the relationship between the motor's torque and its rated weight, the first rated weight corresponding to the first target torque and the second rated weight corresponding to the second target torque are determined respectively; the rated weight represents the maximum weight of the motor load under a certain torque. The operating parameters of the washing equipment are determined based on the target weight, provided that the target weight is greater than or equal to the first rated weight and less than or equal to the second rated weight.

2. The washing equipment according to claim 1, characterized in that, The controller executes the control to allow the acquisition device to acquire the first current and first voltage of the motor to determine the first target power, and is specifically configured as follows: Collect multiple first currents and multiple first voltages; The average value of the plurality of first currents is determined as the first target current, and the average value of the plurality of first voltages is determined as the first target voltage; Based on the positive correlation between the motor's current, voltage, and power, the power corresponding to the first target current and the first target voltage is determined as the first target power.

3. The washing equipment according to claim 1, characterized in that, When the controller executes the control to collect the second current and second voltage of the motor to determine the second target power, it is specifically configured as follows: Collect multiple second currents and multiple second voltages; The average value of the plurality of second currents is determined as the second target current; and the average value of the plurality of second voltages is determined as the second target voltage; Based on the positive correlation between the motor's current, voltage, and power, the power corresponding to the second target current and the second target voltage is determined as the second target power.

4. The washing equipment according to claim 1, characterized in that, The controller is also configured to: If the target weight is less than the first rated weight or greater than the second rated weight, a warning message is sent, indicating that the target weight is inaccurate.

5. The washing apparatus according to any one of claims 1 to 4, characterized in that, Both the first current and the second current include current in the first direction and current in the second direction, and both the first voltage and the second voltage include voltage in the first direction and voltage in the second direction.

6. A weighing method for a washing machine, characterized in that, The weighing method includes: After the motor runs at a first preset speed for a first preset time, the control acquisition device collects the first current and first voltage of the motor to determine the first target power; After the motor runs at a second preset speed for a second preset time, the acquisition device is controlled to acquire the second current and the second voltage of the motor to determine the second target power; the second preset speed is greater than the first preset speed; Based on the correspondence between power difference and clothing weight, the clothing weight corresponding to the target power difference is determined as the target weight of the target clothing; the target power difference is the difference between the second target power and the first target power. Based on the relationship between the power, speed and torque of the motor, the first target torque corresponding to the first target power and the second target torque corresponding to the second target power are determined respectively. Based on the relationship between the motor's torque and its rated weight, the first rated weight corresponding to the first target torque and the second rated weight corresponding to the second target torque are determined respectively; the rated weight represents the maximum weight of the motor load under a certain torque. The operating parameters of the washing equipment are determined based on the target weight, provided that the target weight is greater than or equal to the first rated weight and less than or equal to the second rated weight.

7. The weighing method according to claim 6, characterized in that, The control of the acquisition device to acquire the first current and first voltage of the motor to determine the first target power specifically includes: Collect multiple first currents and multiple first voltages; The average value of the plurality of first currents is determined as the first target current, and the average value of the plurality of first voltages is determined as the first target voltage; Based on the positive correlation between current, voltage, and power, the first target power corresponding to the first target current and the first target voltage is determined.

8. The weighing method according to claim 6, characterized in that, The control of the acquisition device to acquire the second current and second voltage of the motor to determine the second target power specifically includes: Collect multiple second currents and multiple second voltages; The average value of the plurality of second currents is determined as the second target current; and the average value of the plurality of second voltages is determined as the second target voltage; Based on the positive correlation between current, voltage and power, the second target power corresponding to the second target current and the second target voltage is determined.

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