Clothes weighing method and device of washing machine and washing machine

Abstract

The invention provides a clothes weighing method and device of a washing machine and the washing machine. Comprising the steps of obtaining motor operation parameters and an eccentric value of a washing machine roller in the normal operation process of the washing machine, determining the initial weight of clothes according to the motor operation parameters, and determining the highest weighing rotating speed of the clothes according to the initial weight and the eccentric value; the washing machine roller is controlled to run to the highest weighing rotating speed and then decelerated to the lowest weighing rotating speed to obtain the decelerating duration, the equivalent radius of the clothes in the washing machine roller is determined according to the decelerating duration, the eccentric value and the initial weight, and the equivalent radius is the distance from the outer contour of the clothes to the center shaft of the washing machine roller when the clothes are attached to the inner wall of the washing machine roller; the average speed reduction torque of the motor in the speed reduction process of the washing machine roller is obtained, and the final weight of the clothes is determined according to the average speed reduction torque, the equivalent radius, the speed reduction duration, the minimum weighing rotation speed and the maximum weighing rotation speed. The problem that an existing washing machine clothes weighing technology is low in clothes weight calculation accuracy is solved.

Description

Technical Field

[0001] The present application relates to the technical field of laundry weighing for washing machines, and in particular to a laundry weighing method and device for washing machines and a washing machine. Background Art

[0002] Washing machine laundry weighing technology has been a key area of focus for the development of intelligent washing machines in recent years. As consumers demand increased efficiency, energy efficiency, and personalization in laundry, traditional washing machines have limitations in sensing laundry weight. Traditional washing machines typically rely on preset programs or manually selected modes to complete washes, but this method cannot accurately sense the actual weight of laundry, leading to waste of water, electricity, and detergent, and potentially affecting washing results. Currently, laundry weighing technology has been implemented in some high-end smart washing machines, but its widespread adoption still faces challenges, such as sensor cost, accuracy, and compatibility with existing washing machine designs.

[0003] Currently, clothing weighing relies on speed-up weighing technology, which samples motor current and power during the speed-up process and uses this power to calculate clothing mass. However, significant errors can occur during the current and power sampling process, with current deviations typically fluctuating around 10%, leading to significant errors in the calculated results. Summary of the Invention

[0004] The main purpose of the present application is to provide a method and device for weighing clothes in a washing machine, and a washing machine, so as to at least solve the problem of low accuracy in calculating the weight of clothes in the existing washing machine clothing weighing technology.

[0005] To achieve the above-mentioned objectives, according to one aspect of the present application, a method for weighing clothes in a washing machine is provided, comprising: obtaining motor operating parameters and an eccentricity value of a washing machine drum during normal operation of the washing machine, determining a preliminary weight of the clothes according to the motor operating parameters, and determining a maximum weighing speed for the clothes according to the preliminary weight and the eccentricity value; controlling the washing machine drum to operate at the maximum weighing speed and then decelerating to a minimum weighing speed to obtain a deceleration time, and determining an equivalent radius of the clothes in the washing machine drum according to the deceleration time, the eccentricity value, and the preliminary weight, wherein the minimum weighing speed is the speed of the washing machine drum when the clothes break away from the drum wall and hit the drum, and the equivalent radius is the distance from the outer contour of the clothes to the central axis of the washing machine drum when the clothes are attached to the inner wall of the washing machine drum; obtaining an average deceleration torque of the motor during the deceleration of the washing machine drum, and determining a final weight of the clothes according to the average deceleration torque, the equivalent radius, the deceleration time, the minimum weighing speed, and the maximum weighing speed.

[0006] Optionally, the motor operating parameters include motor operating power, and determining the preliminary weight of the clothes based on the motor operating parameters includes: constructing a correlation curve between the weight of the clothes and the motor operating power when the washing machine drum runs at a preset speed; when the washing machine drum runs at a preset speed, obtaining the current motor operating power, and determining the preliminary weight of the clothes based on the current motor operating power and the correlation curve.

[0007] Optionally, in the process of controlling the washing machine drum to operate at the highest weighing speed and then decelerating to the lowest weighing speed, the method further includes: monitoring the real-time deceleration acceleration of the washing machine drum during the deceleration process of the washing machine drum, and determining the deceleration torque of the motor according to a relationship table between the real-time deceleration acceleration and the torque acceleration, wherein the torque acceleration relationship table is a relationship table between the deceleration acceleration of the washing machine drum and the deceleration torque of the motor.

[0008] Optionally, determining the final weight of the clothes according to the average deceleration torque, the equivalent radius, the deceleration time, the minimum weighing speed, and the maximum weighing speed includes: according to a first formula: , determine the final weight of the clothes, where M is the final weight, m is the empty drum weight of the washing machine drum, and T is the average deceleration torque, is the rotational friction coefficient of the washing machine drum, E is the electromagnetic friction coefficient, N is the average speed during the deceleration process, is the average deceleration acceleration during the deceleration process, is the maximum weighing speed, is the minimum weighing speed, t is the deceleration time, is the inner wall radius of the washing machine drum, is the distance from the outer contour of the clothing to the central axis of the washing machine drum, is the distance from the outer contour of the clothing to the central axis of the washing machine drum, is the first moment of inertia, is the second moment of inertia.

[0009] Optionally, before obtaining the motor operating parameters and the eccentricity value of the washing machine drum during normal operation of the washing machine, the method also includes: obtaining a speed reduction time curve graph of the washing machine drum in an empty drum state, wherein the speed reduction time curve graph is obtained by controlling the washing machine drum to reduce speed at different speeds multiple times; and determining the rotational friction coefficient and electromagnetic friction coefficient of the washing machine drum according to the speed reduction time curve graph.

[0010] Optionally, determining the rotational friction coefficient and the electromagnetic friction coefficient of the washing machine drum according to the speed reduction time curve graph includes: determining the rotational friction torque and the electromagnetic resistance torque of the washing machine drum according to the speed reduction time curve graph; and according to a second formula: , determining the rotational friction coefficient and the electromagnetic friction coefficient of the washing machine drum, wherein, is the rotational friction torque, is the electromagnetic resistance torque, is the rotational friction coefficient, m is the empty drum weight of the washing machine drum, N is the average speed during deceleration, and E is the electromagnetic friction coefficient.

[0011] Optionally, determining the equivalent radius of the clothes in the washing machine drum based on the deceleration time, the eccentricity value and the preliminary weight includes: obtaining a radius mapping relationship table, wherein the radius mapping relationship table is a mapping relationship table of the deceleration time, the eccentricity value, the preliminary weight and the equivalent radius; determining the equivalent radius of the clothes in the washing machine drum based on the radius mapping relationship table, wherein the equivalent radius includes the distance of the outer contour of the clothes away from the central axis of the washing machine drum and the distance of the outer contour of the clothes close to the central axis of the washing machine drum.

[0012] Optionally, after determining the final weight of the clothes based on the average deceleration torque, the equivalent radius, the deceleration time, the minimum weighing speed, and the maximum weighing speed, the method further includes: determining the washing parameters of the clothes based on the final weight of the clothes, and performing a washing operation on the clothes based on the washing parameters.

[0013] According to another aspect of the present application, a laundry weighing device for a washing machine is provided, comprising: a first acquiring unit, configured to acquire motor operating parameters and an eccentricity value of a washing machine drum during normal operation of the washing machine, determine a preliminary weight of the laundry based on the motor operating parameters, and determine a maximum weighing speed for the laundry based on the preliminary weight and the eccentricity value; a control unit, configured to control the washing machine drum to operate at the maximum weighing speed and then decelerate to a minimum weighing speed to obtain a deceleration time, and determine an equivalent radius of the laundry within the washing machine drum based on the deceleration time, the eccentricity value, and the preliminary weight, wherein the minimum weighing speed is the speed of the washing machine drum when the laundry breaks away from the drum wall and collides with the drum, and the equivalent radius is the distance from the outer contour of the laundry to the central axis of the washing machine drum when the laundry is attached to the inner wall of the washing machine drum; and a first determining unit, configured to acquire an average deceleration torque of the motor during deceleration of the washing machine drum, and determine a final weight of the laundry based on the average deceleration torque, the equivalent radius, the deceleration time, the minimum weighing speed, and the maximum weighing speed.

[0014] According to another aspect of the present application, a washing machine is provided, comprising: a controller, wherein the controller is configured to execute any one of the laundry weighing methods for the washing machine.

[0015] By applying the technical solution of the present application, the motor operating parameters and the eccentricity value of the washing machine drum are obtained during the normal operation of the washing machine, the preliminary weight of the clothes is determined according to the motor operating parameters, and the maximum weighing speed of the clothes is determined according to the preliminary weight and the eccentricity value; the washing machine drum is controlled to operate at the maximum weighing speed and then decelerated to the minimum weighing speed to obtain the deceleration time, and the equivalent radius of the clothes in the washing machine drum is determined according to the deceleration time, the eccentricity value and the preliminary weight, wherein the minimum weighing speed is the speed of the washing machine drum when the clothes break away from the drum wall and hit the drum, and the equivalent radius is the distance from the outer contour of the clothes to the center axis of the washing machine drum when the clothes are attached to the inner wall of the washing machine drum; the average deceleration torque of the motor during the deceleration of the washing machine drum is obtained, and the final weight of the clothes is determined according to the average deceleration torque, the equivalent radius, the deceleration time, the minimum weighing speed and the maximum weighing speed. The maximum weighing speed of the clothes is determined by preliminary measurement of the motor operating parameters. During the deceleration process of the clothes, the average deceleration torque, equivalent radius, deceleration time, minimum weighing speed and maximum weighing speed parameters are comprehensively analyzed to determine the final mass of the clothes. This avoids the problem of inaccurate calculation of the clothes weight when the existing technology calculates the clothes weight only based on the motor operating parameters due to the easy fluctuation of the motor operating parameters. This solution solves the problem of low accuracy in calculating the clothes weight in the existing washing machine clothes weighing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings that constitute part of this application are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0017] Figure 1 A hardware structure block diagram of a mobile terminal for executing a laundry weighing method for a washing machine provided in an embodiment of the present application is shown;

[0018] Figure 2 A schematic flow chart of a method for weighing clothes in a washing machine according to an embodiment of the present application is shown;

[0019] Figure 3 A schematic diagram showing an equivalent radius of clothing provided according to an embodiment of the present application is shown;

[0020] Figure 4 A schematic flow chart of a laundry weighing method for a specific washing machine according to an embodiment of the present application is shown;

[0021] Figure 5 A schematic diagram showing the composition of the deceleration torque of a motor provided in an embodiment of the present application is shown;

[0022] Figure 6 A schematic diagram of a process for measuring the deceleration torque of a motor provided in accordance with an embodiment of the present application is shown;

[0023] Figure 7 A structural block diagram of a clothes weighing device for a washing machine provided according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0026] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0027] As introduced in the background technology, the existing washing machine clothing weighing technology has a low accuracy in calculating the weight of clothes. In order to solve the problem of low accuracy in calculating the weight of clothes in the existing washing machine clothing weighing technology, the embodiments of the present application provide a washing machine clothing weighing method, device and washing machine.

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0029] The method embodiments provided in the embodiments of the present application can be executed in a mobile terminal, a computer terminal or a similar computing device. Taking running on a mobile terminal as an example, Figure 1 This is a hardware structure block diagram of a mobile terminal for a laundry weighing method of a washing machine according to an embodiment of the present invention. Figure 1 As shown, the mobile terminal may include one or more ( Figure 1 Only one is shown) a processor 102 (the processor 102 may include but is not limited to a microprocessor MCU or a programmable logic device FPGA and other processing devices) and a memory 104 for storing data, wherein the mobile terminal may also include a transmission device 106 and an input and output device 108 for communication functions. It will be understood by those skilled in the art that Figure 1 The structure shown is only for illustration and does not limit the structure of the mobile terminal. Figure 1 More or fewer components than shown, or with Figure 1 Different configurations shown.

[0030] The memory 104 can be used to store computer programs, such as software programs and modules of application software, such as the computer program corresponding to the laundry weighing method for a washing machine in an embodiment of the present invention. The processor 102 executes the computer programs stored in the memory 104 to execute various functional applications and data processing, thereby implementing the above-mentioned method. The memory 104 may include high-speed random access memory and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include a memory remotely located relative to the processor 102, and these remote memories can be connected to the mobile terminal via a network. Examples of such networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof. The transmission device 106 is used to receive or send data via a network. Specific examples of such networks may include a wireless network provided by the mobile terminal's telecommunications provider. In one example, the transmission device 106 includes a network interface controller (NIC), which can be connected to other network devices via a base station to enable communication with the Internet. In one example, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0031] In this embodiment, a method for weighing clothes in a washing machine running on a mobile terminal, a computer terminal or a similar computing device is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0032] Figure 2 FIG. 1 is a flow chart of a laundry weighing method for a washing machine according to an embodiment of the present application. Figure 2 As shown, the method includes the following steps:

[0033] Step S201, obtaining motor operating parameters and an eccentricity value of the washing machine drum during normal operation of the washing machine, determining a preliminary weight of the clothes based on the motor operating parameters, and determining a maximum weighing speed for the clothes based on the preliminary weight and the eccentricity value;

[0034] Specifically, by dynamically monitoring motor operating parameters (such as power, current, and voltage) and the drum's eccentricity, a preliminary measurement of the laundry's weight is achieved, resulting in a preliminary estimate of the laundry's weight. The motor operating parameters reflect the load on the motor as the laundry rotates in the drum, while the eccentricity reflects the distribution of the laundry within the drum. Combining these two factors allows for a more accurate estimate of the preliminary laundry weight.

[0035] Step S202: Controlling the washing machine drum to run at the highest weighing speed and then decelerating to the lowest weighing speed to obtain a deceleration time, and determining an equivalent radius of the clothing in the washing machine drum based on the deceleration time, the eccentricity value, and the preliminary weight, wherein the lowest weighing speed is the speed of the washing machine drum when the clothing breaks away from the drum wall and hits the drum, and the equivalent radius is the distance from the outer contour of the clothing to the central axis of the washing machine drum when the clothing is attached to the inner wall of the washing machine drum;

[0036] Specifically, the speed reduction weighing strategy utilizes the change in the state of clothes in the drum (from sticking to the wall to detaching from the wall) and further refines the weight measurement by calculating parameters such as the speed reduction time and equivalent radius.

[0037] Step S203, obtaining the average deceleration torque of the motor during the deceleration of the washing machine drum, and determining the final weight of the clothes based on the average deceleration torque, the equivalent radius, the deceleration time, the minimum weighing speed, and the maximum weighing speed.

[0038] Specifically, by comprehensively analyzing parameters such as average deceleration torque, equivalent radius, and deceleration time, this solution can provide a more accurate final weight of the clothes than traditional indirect estimation, solving the problem of inaccurate weighing caused by uneven distribution of clothes and fluctuations in motor parameters.

[0039] Through this embodiment, the above-mentioned steps S201, S202 and S203 are applied, the maximum weighing speed of the clothes is determined by preliminary measurement of the weight of the clothes through the motor operating parameters, and the average deceleration torque, equivalent radius, deceleration time, minimum weighing speed and maximum weighing speed parameters are comprehensively analyzed during the deceleration process of the clothes to determine the final mass of the clothes. This avoids the problem of inaccurate calculation of the clothes weight when the existing technology calculates the clothes weight only based on the motor operating parameters due to the easy fluctuation of the motor operating parameters. This solution thus solves the problem of low accuracy in calculating the clothes weight in the existing washing machine clothes weighing technology.

[0040] During the specific implementation process, the motor operating parameters include the motor operating power, and the preliminary weight of the clothes is determined based on the above motor operating parameters, including: when the above washing machine drum runs at a preset speed, constructing a correlation curve between the weight of the clothes and the motor operating power; when the above washing machine drum runs at a preset speed, obtaining the current motor operating power, and determining the preliminary weight of the clothes based on the above current motor operating power and the above correlation curve.

[0041] This method constructs a correlation curve between the weight of the clothes and the operating power of the motor. This solution can quickly estimate the preliminary weight of the clothes based on the motor operating power of the washing machine drum at a specific speed. The implementation of this technical feature is based on the linear relationship between the motor operating power and the weight of the clothes, which is established through a large amount of experimental data in the early stage, ensuring the accuracy of the preliminary weight estimation. In practical applications, the measurement of the motor operating power can be carried out in real time, so that the preliminary weight information of the clothes can be obtained at any time when the washing machine is running, which solves the inconvenience of stopping the machine for weighing in traditional weighing methods. In addition, this technical feature can also adapt to different types of motors and drums, including but not limited to DC motors, AC motors, and drums of different sizes. By adjusting the parameters of the correlation curve, the weighing optimization of different types of washing machines can be achieved, further improving the versatility and flexibility of the weighing method.

[0042] Specifically, in the process of controlling the washing machine drum to operate at the above-mentioned maximum weighing speed and then slowing down to the minimum weighing speed, the above-mentioned method also includes: monitoring the real-time deceleration acceleration of the above-mentioned washing machine drum during the deceleration process of the above-mentioned washing machine drum, and determining the deceleration torque of the above-mentioned motor according to the relationship table between the real-time deceleration acceleration and the torque acceleration, wherein the above-mentioned torque acceleration relationship table is a relationship table between the deceleration acceleration of the above-mentioned washing machine drum and the above-mentioned deceleration torque of the above-mentioned motor.

[0043] This method monitors the deceleration acceleration of the washing machine drum in real time and determines the deceleration torque through a torque-acceleration relationship table. This is a key step in improving weighing accuracy in this solution. The deceleration acceleration reflects the change in the state of the clothes in the drum, while the deceleration torque is directly related to the motor's control over the clothes. Through this technical feature, this solution can monitor and adjust the motor's torque output in real time, ensuring that the clothes can smoothly transition from the wall-adhering state to the detached state during the deceleration process, thereby accurately measuring the equivalent radius of the clothes. The realization of this technical effect solves the problem of weighing errors caused by changes in the state of clothes in the drum, making the weighing results more reliable.

[0044] More specifically, determining the final weight of the clothes according to the average deceleration torque, the equivalent radius, the deceleration time, the minimum weighing speed, and the maximum weighing speed includes: according to a first formula: , determine the final weight of the clothes, where M is the final weight, m is the empty drum weight of the washing machine drum, and T is the average deceleration torque. is the rotational friction coefficient of the washing machine drum, E is the electromagnetic friction coefficient, N is the average speed during the deceleration process, is the average deceleration acceleration during the deceleration process, is the maximum weighing speed mentioned above, is the minimum weighing speed mentioned above, t is the speed reduction time mentioned above, is the inner wall radius of the washing machine drum, is the distance from the outer contour of the above-mentioned clothes to the central axis of the above-mentioned washing machine drum, is the distance from the outer contour of the above-mentioned clothes to the central axis of the above-mentioned washing machine drum, is the first moment of inertia, is the second moment of inertia.

[0045] Among them, the equivalent radius 、 、 The diagram of the value of Figure 3 As shown;

[0046] This method uses the first formula to comprehensively analyze parameters such as average deceleration torque, equivalent radius, and deceleration duration to calculate the final weight of the laundry. This technical feature overcomes the indirect weight estimation problem in traditional weighing methods, enabling direct and accurate measurement of laundry weight. The parameters in the formula cover several key physical quantities of drum operation. Accurately measuring and calculating these parameters eliminates the impact of uneven clothing distribution within the drum and fluctuations in motor parameters on the weighing results.

[0047] Furthermore, before obtaining the motor operating parameters and the eccentricity value of the washing machine drum during normal operation of the washing machine, the above method also includes: obtaining a speed reduction time curve graph of the washing machine drum in an empty drum state, wherein the above speed reduction time curve graph is obtained by controlling the above washing machine drum to reduce speed at different speeds multiple times; and determining the rotational friction coefficient and electromagnetic friction coefficient of the above washing machine drum based on the above speed reduction time curve graph.

[0048] This method, before obtaining the motor operating parameters and drum eccentricity, pre-generates a time-dependent curve of the drum's speed drop when empty, another crucial step in improving weighing accuracy. This technical feature, by analyzing the drum's operating characteristics when empty, determines the drum's rotational and electromagnetic friction coefficients, providing the fundamental parameters for subsequent laundry weight measurement. This feature allows the solution to accurately determine the drum's own rotational and electromagnetic friction coefficients, ensuring weighing accuracy.

[0049] Furthermore, determining the rotational friction coefficient and electromagnetic friction coefficient of the washing machine drum according to the speed reduction time curve diagram includes: determining the rotational friction torque and electromagnetic resistance torque of the washing machine drum according to the speed reduction time curve diagram; and according to the second formula: , determine the above-mentioned rotational friction coefficient and the above-mentioned electromagnetic friction coefficient of the above-mentioned washing machine drum, wherein, is the above-mentioned rotational friction torque, is the electromagnetic resistance torque mentioned above, is the above-mentioned rotational friction coefficient, m is the empty drum weight of the above-mentioned washing machine drum, N is the average speed during the deceleration process, and E is the above-mentioned electromagnetic friction coefficient.

[0050] This method determines the rotational friction torque and electromagnetic drag torque by analyzing the speed reduction time curve, and then calculates the rotational friction coefficient and electromagnetic friction coefficient. This is a key technical step in ensuring weighing accuracy in this solution. This technical feature is achieved by accurately measuring the changes in the rotational friction torque and electromagnetic drag torque during the operation of the drum.

[0051] Specifically, the equivalent radius of the clothes in the washing machine drum is determined according to the deceleration time, the eccentricity value and the preliminary weight, including: obtaining a radius mapping relationship table, wherein the radius mapping relationship table is a mapping relationship table of the deceleration time, the eccentricity value, the preliminary weight and the equivalent radius; determining the equivalent radius of the clothes in the washing machine drum according to the radius mapping relationship table, wherein the equivalent radius includes the distance of the outer contour of the clothes away from the central axis of the washing machine drum and the distance of the outer contour of the clothes close to the central axis of the washing machine drum.

[0052] This method, based on dynamic monitoring of the laundry's state during drum operation, accurately reflects the distribution of laundry within the drum, thereby improving weighing accuracy. In practical applications, the establishment of a radius mapping table goes beyond direct measurement of deceleration duration, eccentricity, and initial weight. It can also include, but is not limited to, comprehensive consideration of factors such as clothing material, clothing quantity, and the internal drum environment (such as humidity and temperature). This further enhances the adaptability and intelligence of the weighing method, providing users with a more personalized and precise washing experience.

[0053] Furthermore, after determining the final weight of the clothes based on the average deceleration torque, the equivalent radius, the deceleration time, the minimum weighing speed, and the maximum weighing speed, the method further includes: determining the washing parameters of the clothes based on the final weight of the clothes, and performing a washing operation on the clothes based on the washing parameters.

[0054] After determining the final weight of the laundry, this method adjusts the washing parameters based on this information, a key step in optimizing the washing process and conserving resources within this solution. This technical feature, based on the precise measurement of laundry weight, can intelligently adjust parameters such as water level, detergent dosage, and washing time, ensuring optimal washing results while reducing unnecessary waste of water, electricity, and detergent. In practical applications, this technical feature is not limited to adjusting washing parameters based on laundry weight but can also include, but is not limited to, comprehensive consideration of factors such as clothing material, degree of soiling, and user preferences, further enhancing the intelligence and personalization of washing and providing users with a more efficient and energy-efficient washing experience.

[0055] In addition, this embodiment also includes a dynamic torque calibration algorithm: real-time torque calibration is implemented during the deceleration process to more accurately measure the weight of the clothes.

[0056] Specific embodiment: Building on the existing slowdown weighing method, a dynamic torque calibration algorithm is introduced. This algorithm dynamically adjusts the torque measurement baseline based on the real-time movement of the clothing within the drum (such as the degree of clumping and uniformity of clothing distribution). For example, when clothing is tightly packed, the algorithm considers the reduced free space in the drum, thereby affecting the inertia effect of the clothing, and adjusts the torque measurement accordingly. In specific implementations, one or more sensors can be configured to monitor the pressure distribution within the drum and the real-time power consumption of the motor, which serve as the basis for the algorithm to adjust the torque measurement.

[0057] By utilizing a dynamic torque calibration algorithm, the present invention can more effectively compensate for torque measurement errors caused by changes in clothing distribution, significantly improving clothing weighing accuracy. Compared to existing static torque measurement methods, this dynamic calibration mechanism can better adapt to the dynamic changes in clothing within the drum, especially when the load is small and unevenly distributed.

[0058] In order to enable those skilled in the art to more clearly understand the technical solution of the present application, the implementation process of the laundry weighing method of the washing machine of the present application will be described in detail below with reference to specific embodiments.

[0059] This embodiment relates to a specific method for weighing clothes in a washing machine. First, the principle of the method is analyzed. This method is proposed based on the parameter of moment of inertia in the mechanical model. The fundamental reason is that for models of similar shapes, the greater the moment of inertia, the longer it takes to stop from high speed. The moment of inertia is directly related to the mass. Therefore, if the time it takes to go from high speed to low speed is known, the mass of the clothes can be directly obtained through the mechanical formula, and the mass of the clothes can be calculated based on the eccentricity value, the estimated weight of the clothes, and the corrected torque. By not indirectly measuring through parameters such as motor power, the error caused by large fluctuations in motor voltage and current is reduced. Figure 4Specifically, it includes the following contents:

[0060] After entering the laundry weighing process, the motor operating parameters and the eccentricity value of the washing machine drum are obtained during normal operation of the washing machine, and the preliminary weight of the clothes is determined based on the motor operating parameters; and the corresponding maximum weighing speed is selected based on the preliminary weight and the eccentricity value;

[0061] After obtaining the highest weighing speed, the torque of the washing machine motor is controlled so that the washing machine drum reaches the highest weighing speed, and the deceleration process is started, and the speed is reduced to the lowest weighing speed. Among them, the lowest weighing speed is the speed at which the clothes hit the drum when they break away from the inner wall of the washing machine drum;

[0062] During the deceleration process, the deceleration acceleration of the washing machine drum is monitored in real time, the corresponding motor deceleration torque is selected according to the deceleration acceleration, and the change of the motor deceleration torque is monitored in real time. When the difference between two consecutive motor deceleration torques is less than a preset difference, it is considered that the motor deceleration torque decreases smoothly. The average deceleration torque of the motor during the deceleration process of the washing machine drum is obtained, and the final weight of the clothes is calculated based on the average deceleration torque, the equivalent radius of the clothes, the deceleration time, the minimum weighing speed, and the maximum weighing speed.

[0063] Before weighing the clothes, it is necessary to measure the average friction torque T1 of the rotating friction torque (mechanical friction torque) of the drum to the whole drum in the empty drum state for subsequent calculations, where, Figure 5 As shown in Figure 1, the motor deceleration torque includes mechanical friction torque, electromagnetic resistance torque and load additional torque.

[0064] The measurement process is as follows Figure 6 As shown: First, the low-speed measurement of the empty drum of the washing machine is performed to obtain the deceleration time of the washing machine at low speed in the empty drum state. Then, the empty drum is raised to a higher speed step, and the deceleration time of the empty drum is measured from different steps.

[0065] By plotting the speed-time curve and analyzing the deceleration time at different speeds, we can determine the magnitude of the electromagnetic drag torque at different speeds. Because the clothing in this model is treated as an additional mass attached to the drum, there is no load drag torque, and the friction drag torque (rotational friction coefficient) remains constant. By summing these three factors, we can determine the precise torque of the washing machine drum during deceleration.

[0066]

[0067]

[0068]

[0069]

[0070] Among them, M is the mass of the empty cylinder at this time, T is the deceleration torque, is the rotational friction coefficient of the washing machine drum, E is the electromagnetic friction coefficient, N is the average speed during the deceleration process, is the mechanical friction torque of the washing machine drum, is the electromagnetic resistance torque of the washing machine drum, is the additional load moment.

[0071] Clothes speed-up process: First, according to experiments, when the rotation speed exceeds 60 rpm, the clothes will already stick to the outer wall of the drum. At this time, the rotational inertia of the clothes can be compared to the sum of the rotational inertia of the drum. Therefore, the clothing speed-up process is as follows:

[0072] 1. Slowly increase the speed until the clothes stick to the wall. In this state, the clothes slowly stick to the wall, but due to the slow rising speed, the eccentricity will be relatively low, which is closer to the ideal state (clothes are evenly distributed on the surface of the drum wall).

[0073] 2. Rapidly increase the speed to high speed (the highest speed for clothing weighing). Due to the slow increase in stage 1, the eccentricity of the clothing changes little at this point. To accumulate sufficient inertia and improve the resolution of the deceleration time, increase the speed of the clothing to extend the deceleration time. Read the eccentricity value of the clothing in the middle and record it.

[0074] 3. Reduce speed from high to low (the lowest speed for clothing weighing) and record the time it takes to reduce speed to low.

[0075] Data sorting stage: In the second stage, appropriate equivalent radius R1, R2, R3 of clothing are selected according to the deceleration time, weight and eccentricity of clothing. The selection of equivalent radius is as follows: Figure 3 As shown, wait for the processor to calculate the weight of the clothes.

[0076] Then calculate the moment of inertia of the clothes and then reversely calculate the mass of the clothes. The specific steps include:

[0077] 1. Calculate the moment of inertia of clothes. Since clothes are distributed in an uneven ring shape on the drum wall, to calculate the moment of inertia, it is necessary to integrate it over the radius and make appropriate selections for the distribution of clothes according to the eccentricity value. In the case of a large number of clothes, the formula is: , calculate the moment of inertia of the outer circle clothing , through the formula: , calculate the moment of inertia of the inner circle clothing ,in, , , and is the corresponding surface density, M is the mass of the clothing, and N is the average speed during the deceleration process;

[0078] Among them, the equivalent radius R2 and R3 of the clothing are positively correlated with the deceleration time. Once the deceleration time is determined, the equivalent radius of the clothing can be obtained, and the ratio is 0.6.

[0079] It can be deduced that the moment of inertia of the outer circle clothing is , the moment of inertia of the inner circle clothing ;

[0080] The total moment of inertia I is the moment of inertia of the outer circle clothing Moment of inertia of inner circle clothing sum.

[0081] According to the formula: , calculate the final weight of the clothes, where , is the maximum weighing speed, is the minimum weighing speed, t is the deceleration time, is the average deceleration acceleration during the deceleration process, m is the empty drum weight of the washing machine, M is the final weight, E is the electromagnetic friction coefficient, and N is the average speed during the deceleration process.

[0082] Finally, the subsequent washing parameters are selected according to the final weight of the clothes and the washing process is executed.

[0083] This embodiment uses a drum washing machine setup that first increases speed and then decreases speed. The system monitors the time it takes to decrease from high to low speed. The total moment of inertia of the laundry is calculated using a moment of inertia calculation formula, based on the additional moment of inertia added to the drum during rotation and the relative position of the laundry within the drum. The accumulation of the laundry within the drum is then inferred based on the eccentricity value and estimated laundry weight during the steady-state phase of speed increase. Finally, a more accurate calculation of the laundry weight is performed using the corrected torque and moment of inertia.

[0084] The embodiment of the present application also provides a laundry weighing device for a washing machine. It should be noted that the laundry weighing device for a washing machine in the embodiment of the present application can be used to execute the laundry weighing method for a washing machine provided in the embodiment of the present application. The device is used to implement the above-mentioned embodiments and preferred embodiments, and the details that have been described will not be repeated here. As used below, the term "module" can implement a combination of software and / or hardware for a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0085] The following is an introduction to the clothes weighing device of the washing machine provided in the embodiment of the present application.

[0086] Figure 7Schematic diagram of a laundry weighing device for a washing machine according to an embodiment of the present application. Figure 7 As shown, the device includes:

[0087] a first acquiring unit 71 configured to acquire motor operating parameters and an eccentricity value of the washing machine drum during normal operation of the washing machine, determine a preliminary weight of the laundry based on the motor operating parameters, and determine a maximum weighing speed for the laundry based on the preliminary weight and the eccentricity value;

[0088] a control unit 72 for controlling the washing machine drum to operate at the maximum weighing speed and then decelerate to the minimum weighing speed to obtain a deceleration time, and determining an equivalent radius of the clothing within the washing machine drum based on the deceleration time, the eccentricity value, and the preliminary weight, wherein the minimum weighing speed is the speed of the washing machine drum when the clothing breaks away from the drum wall and hits the drum, and the equivalent radius is the distance from the outer contour of the clothing to the central axis of the washing machine drum when the clothing is attached to the inner wall of the washing machine drum;

[0089] The first determining unit 73 is used to obtain the average deceleration torque of the motor during the deceleration of the washing machine drum, and determine the final weight of the clothes according to the average deceleration torque, the equivalent radius, the deceleration time, the minimum weighing speed, and the maximum weighing speed.

[0090] In this embodiment, the first acquisition unit is used to obtain motor operating parameters and the eccentricity value of the washing machine drum during normal operation of the washing machine, determine the preliminary weight of the clothes according to the above motor operating parameters, and determine the maximum weighing speed of the clothes according to the above preliminary weight and the above eccentricity value; the control unit is used to control the washing machine drum to operate to the above maximum weighing speed and then decelerate to the minimum weighing speed to obtain the deceleration time, and determine the equivalent radius of the clothes in the washing machine drum according to the above deceleration time, the above eccentricity value and the above preliminary weight, wherein the above minimum weighing speed is the speed of the washing machine drum when the clothes break away from the drum wall and hit the drum, and the above equivalent radius is the distance from the outer contour of the clothes to the central axis of the washing machine drum when the clothes are attached to the inner wall of the washing machine drum; the first determination unit is used to obtain the average deceleration torque of the motor during the deceleration of the washing machine drum, and determine the final weight of the clothes according to the average deceleration torque, the equivalent radius, the deceleration time, the minimum weighing speed, and the maximum weighing speed. The maximum weighing speed of the clothes is determined by preliminary measurement of the motor operating parameters. During the deceleration process of the clothes, the average deceleration torque, equivalent radius, deceleration time, minimum weighing speed and maximum weighing speed parameters are comprehensively analyzed to determine the final mass of the clothes. This avoids the problem of inaccurate calculation of the clothes weight when the existing technology calculates the clothes weight only based on the motor operating parameters due to the easy fluctuation of the motor operating parameters. This solution solves the problem of low accuracy in calculating the clothes weight in the existing washing machine clothes weighing technology.

[0091] As an optional solution, the motor operating parameters include the motor operating power, and the first acquisition unit includes a construction module and a first determination module; the construction module is used to construct a correlation curve between the weight of the clothes and the motor operating power when the above-mentioned washing machine drum runs at a preset speed; the first determination module is used to obtain the current motor operating power when the above-mentioned washing machine drum runs at a preset speed, and determine the preliminary weight of the above-mentioned clothes based on the above-mentioned current motor operating power and the above-mentioned correlation curve.

[0092] In an optional solution, the device further includes a second determination unit, which is used to monitor the real-time deceleration acceleration of the washing machine drum during the deceleration process of the washing machine drum after controlling the washing machine drum to operate at the above-mentioned maximum weighing speed and then decelerating to the minimum weighing speed, and determine the deceleration torque of the motor according to a relationship table between the real-time deceleration acceleration and the torque acceleration, wherein the torque acceleration relationship table is a relationship table between the deceleration acceleration of the washing machine drum and the above-mentioned deceleration torque of the motor.

[0093] In an optional solution, the first determining unit includes a second determining module, configured to determine the value of the first determining unit according to the first formula: , determine the final weight of the clothes, where M is the final weight, m is the empty drum weight of the washing machine drum, and T is the average deceleration torque. is the rotational friction coefficient of the washing machine drum, E is the electromagnetic friction coefficient, N is the average speed during the deceleration process, is the average deceleration acceleration during the deceleration process, is the maximum weighing speed mentioned above, is the minimum weighing speed mentioned above, t is the speed reduction time mentioned above, is the inner wall radius of the washing machine drum, is the distance from the outer contour of the above-mentioned clothes to the central axis of the above-mentioned washing machine drum, is the distance from the outer contour of the above-mentioned clothes to the central axis of the above-mentioned washing machine drum, is the first moment of inertia, is the second moment of inertia.

[0094] In an optional solution, the device also includes a second acquisition unit and a third determination unit; the second acquisition unit is used to obtain a speed reduction time curve graph of the washing machine drum in an empty drum state before obtaining the motor operating parameters and the eccentricity value of the washing machine drum during normal operation of the washing machine, wherein the above-mentioned speed reduction time curve graph is obtained by repeatedly controlling the above-mentioned washing machine drum to reduce speed at different speeds; the third determination unit is used to determine the rotational friction coefficient and electromagnetic friction coefficient of the above-mentioned washing machine drum based on the above-mentioned speed reduction time curve graph.

[0095] In an optional solution, the third determination unit includes a third determination module and a fourth determination module; the third determination module is used to determine the rotational friction torque and electromagnetic resistance torque of the washing machine drum according to the speed reduction time curve diagram; the fourth determination module is used to determine the rotational friction torque and electromagnetic resistance torque of the washing machine drum according to the second formula: , determine the above-mentioned rotational friction coefficient and the above-mentioned electromagnetic friction coefficient of the above-mentioned washing machine drum, wherein, is the above-mentioned rotational friction torque, is the electromagnetic resistance torque mentioned above, is the above-mentioned rotational friction coefficient, m is the empty drum weight of the above-mentioned washing machine drum, N is the average speed during the deceleration process, and E is the above-mentioned electromagnetic friction coefficient.

[0096] An optional solution, the control unit includes an acquisition module and a fifth determination module; the acquisition module is used to obtain a radius mapping relationship table, wherein the above-mentioned radius mapping relationship table is a mapping relationship table of the above-mentioned deceleration time, the above-mentioned eccentricity value, the above-mentioned preliminary weight and the above-mentioned equivalent radius; the fifth determination module is used to determine the above-mentioned equivalent radius of the above-mentioned clothes in the above-mentioned washing machine drum according to the above-mentioned radius mapping relationship table, wherein the above-mentioned equivalent radius includes the distance of the above-mentioned clothes outer contour away from the above-mentioned washing machine drum center axis and the distance of the above-mentioned clothes outer contour close to the above-mentioned washing machine drum center axis.

[0097] In an optional solution, the device also includes an execution unit, which is used to determine the washing parameters of the above-mentioned clothes according to the above-mentioned final weight of the above-mentioned clothes based on the above-mentioned average deceleration torque, the above-mentioned equivalent radius, the above-mentioned deceleration time, the above-mentioned minimum weighing speed, and the above-mentioned maximum weighing speed, and perform a washing operation on the above-mentioned clothes according to the above-mentioned washing parameters.

[0098] The laundry weighing device for a washing machine includes a processor and a memory. The first acquisition unit, control unit, first determination unit, etc. are all stored as program units in the memory. The processor executes the program units stored in the memory to implement the corresponding functions. The above modules are all located in the same processor; alternatively, the above modules can be located in different processors in any combination.

[0099] The processor includes a core, which retrieves the corresponding program unit from the memory. One or more cores can be provided, and the core parameters can be adjusted to solve the problem of low accuracy in calculating the weight of clothes in existing washing machine laundry weighing technology.

[0100] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0101] An embodiment of the present invention provides a washing machine, comprising: a controller, wherein the controller is configured to execute any one of the above-mentioned laundry weighing methods for the washing machine.

[0102] An embodiment of the present invention provides a computer-readable storage medium, which includes a stored program. When the program is run, the device where the computer-readable storage medium is located is controlled to execute the laundry weighing method for the washing machine.

[0103] Specifically, the laundry weighing method of the washing machine includes:

[0104] Step S201, obtaining motor operating parameters and an eccentricity value of the washing machine drum during normal operation of the washing machine, determining a preliminary weight of the clothes based on the motor operating parameters, and determining a maximum weighing speed for the clothes based on the preliminary weight and the eccentricity value;

[0105] Step S202: Controlling the washing machine drum to run at the highest weighing speed and then decelerating to the lowest weighing speed to obtain a deceleration time, and determining an equivalent radius of the clothing in the washing machine drum based on the deceleration time, the eccentricity value, and the preliminary weight, wherein the lowest weighing speed is the speed of the washing machine drum when the clothing breaks away from the drum wall and hits the drum, and the equivalent radius is the distance from the outer contour of the clothing to the central axis of the washing machine drum when the clothing is attached to the inner wall of the washing machine drum;

[0106] Step S203, obtaining the average deceleration torque of the motor during the deceleration of the washing machine drum, and determining the final weight of the clothes based on the average deceleration torque, the equivalent radius, the deceleration time, the minimum weighing speed, and the maximum weighing speed.

[0107] An embodiment of the present invention provides a processor, which is used to run a program, wherein the laundry weighing method of the washing machine is executed when the program is run.

[0108] Specifically, the laundry weighing method of the washing machine includes:

[0109] Step S201, obtaining motor operating parameters and an eccentricity value of the washing machine drum during normal operation of the washing machine, determining a preliminary weight of the clothes based on the motor operating parameters, and determining a maximum weighing speed for the clothes based on the preliminary weight and the eccentricity value;

[0110] Step S202: Controlling the washing machine drum to run at the highest weighing speed and then decelerating to the lowest weighing speed to obtain a deceleration time, and determining an equivalent radius of the clothing in the washing machine drum based on the deceleration time, the eccentricity value, and the preliminary weight, wherein the lowest weighing speed is the speed of the washing machine drum when the clothing breaks away from the drum wall and hits the drum, and the equivalent radius is the distance from the outer contour of the clothing to the central axis of the washing machine drum when the clothing is attached to the inner wall of the washing machine drum;

[0111] Step S203, obtaining the average deceleration torque of the motor during the deceleration of the washing machine drum, and determining the final weight of the clothes based on the average deceleration torque, the equivalent radius, the deceleration time, the minimum weighing speed, and the maximum weighing speed.

[0112] An embodiment of the present invention provides an electronic device, comprising a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, at least the following steps are performed:

[0113] Step S201, obtaining motor operating parameters and an eccentricity value of the washing machine drum during normal operation of the washing machine, determining a preliminary weight of the clothes based on the motor operating parameters, and determining a maximum weighing speed for the clothes based on the preliminary weight and the eccentricity value;

[0114] Step S202: Controlling the washing machine drum to run at the highest weighing speed and then decelerating to the lowest weighing speed to obtain a deceleration time, and determining an equivalent radius of the clothing in the washing machine drum based on the deceleration time, the eccentricity value, and the preliminary weight, wherein the lowest weighing speed is the speed of the washing machine drum when the clothing breaks away from the drum wall and hits the drum, and the equivalent radius is the distance from the outer contour of the clothing to the central axis of the washing machine drum when the clothing is attached to the inner wall of the washing machine drum;

[0115] Step S203, obtaining the average deceleration torque of the motor during the deceleration of the washing machine drum, and determining the final weight of the clothes based on the average deceleration torque, the equivalent radius, the deceleration time, the minimum weighing speed, and the maximum weighing speed.

[0116] The devices in this article can be servers, PCs, PADs, mobile phones, etc.

[0117] The present application also provides a computer program product, which, when executed on a data processing device, is adapted to execute a program for initializing at least the following method steps:

[0118] Step S201, obtaining motor operating parameters and an eccentricity value of the washing machine drum during normal operation of the washing machine, determining a preliminary weight of the clothes based on the motor operating parameters, and determining a maximum weighing speed for the clothes based on the preliminary weight and the eccentricity value;

[0119] Step S202: Controlling the washing machine drum to run at the highest weighing speed and then decelerating to the lowest weighing speed to obtain a deceleration time, and determining an equivalent radius of the clothing in the washing machine drum based on the deceleration time, the eccentricity value, and the preliminary weight, wherein the lowest weighing speed is the speed of the washing machine drum when the clothing breaks away from the drum wall and hits the drum, and the equivalent radius is the distance from the outer contour of the clothing to the central axis of the washing machine drum when the clothing is attached to the inner wall of the washing machine drum;

[0120] Step S203, obtaining the average deceleration torque of the motor during the deceleration of the washing machine drum, and determining the final weight of the clothes based on the average deceleration torque, the equivalent radius, the deceleration time, the minimum weighing speed, and the maximum weighing speed.

[0121] Obviously, those skilled in the art will appreciate that the various modules or steps of the present invention described above can be implemented using a general-purpose computing device, can be centralized on a single computing device, or can be distributed across a network of multiple computing devices. They can be implemented using program code executable by the computing device, and thus, can be stored in a storage device and executed by the computing device. In some cases, the steps shown or described herein can be performed in a different order than that shown, or can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0122] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0123] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0124] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0125] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0126] In a typical configuration, a computing device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory.

[0127] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0128] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can be implemented using any method or technology for information storage. Information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, phase-change RAM (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassettes, magnetic disk storage or other magnetic storage devices, or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media does not include transitory computer-readable media, such as modulated data signals and carrier waves.

[0129] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0130] It should also be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, commodity, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or includes elements inherent to such process, method, commodity, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, commodity, or apparatus that includes the element.

[0131] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A method for weighing clothes in a washing machine, characterized in that: include: obtaining motor operating parameters and an eccentricity value of a washing machine drum during normal operation of the washing machine, determining a preliminary weight of the clothes according to the motor operating parameters, and determining a maximum weighing speed of the clothes according to the preliminary weight and the eccentricity value; Controlling the washing machine drum to run at the maximum weighing speed and then decelerating to the minimum weighing speed to obtain a deceleration time, and determining an equivalent radius of the clothing within the washing machine drum based on the deceleration time, the eccentricity value, and the preliminary weight, wherein the minimum weighing speed is the speed of the washing machine drum when the clothing breaks away from the drum wall and hits the drum, and the equivalent radius is the distance from the outer contour of the clothing to the central axis of the washing machine drum when the clothing is attached to the inner wall of the washing machine drum; The average deceleration torque of the motor during the deceleration of the washing machine drum is obtained, and the final weight of the clothes is determined according to the average deceleration torque, the equivalent radius, the deceleration time, the minimum weighing speed, and the maximum weighing speed.

2. The method according to claim 1, characterized in that The motor operating parameters include the motor operating power. Determining the preliminary weight of the clothes according to the motor operating parameters includes: When the drum of the washing machine is running at a preset speed, a correlation curve between the weight of the clothes and the operating power of the motor is constructed; When the drum of the washing machine runs at a preset speed, the current motor operating power is obtained, and the preliminary weight of the clothes is determined according to the current motor operating power and the correlation curve.

3. The method according to claim 1, characterized in that In the process of controlling the drum of the washing machine to run at the highest weighing speed and then slowing down to the lowest weighing speed, the method further includes: During the deceleration process of the washing machine drum, the real-time deceleration acceleration of the washing machine drum is monitored, and the deceleration torque of the motor is determined based on a relationship table between the real-time deceleration acceleration and the torque acceleration, wherein the torque acceleration relationship table is a relationship table between the deceleration acceleration of the washing machine drum and the deceleration torque of the motor.

4. The method according to claim 1, wherein Determining the final weight of the clothes according to the average deceleration torque, the equivalent radius, the deceleration time, the minimum weighing speed, and the maximum weighing speed includes: According to the first formula: , determine the final weight of the clothes, where M is the final weight, m is the empty drum weight of the washing machine drum, and T is the average deceleration torque, is the rotational friction coefficient of the washing machine drum, E is the electromagnetic friction coefficient, N is the average speed during the deceleration process, is the average deceleration acceleration during the deceleration process, is the maximum weighing speed, is the minimum weighing speed, t is the deceleration time, is the inner wall radius of the washing machine drum, is the distance from the outer contour of the clothing to the central axis of the washing machine drum, is the distance from the outer contour of the clothing to the central axis of the washing machine drum, is the first moment of inertia, is the second moment of inertia.

5. The method according to claim 1, wherein Before obtaining the motor operating parameters and the eccentricity value of the washing machine drum during normal operation of the washing machine, the method further includes: Obtaining a speed reduction time curve graph of a washing machine drum in an empty drum state, wherein the speed reduction time curve graph is obtained by controlling the washing machine drum to reduce speed at different speeds multiple times; The rotational friction coefficient and the electromagnetic friction coefficient of the washing machine drum are determined according to the speed reduction time curve diagram.

6. The method according to claim 5, characterized in that Determining the rotational friction coefficient and the electromagnetic friction coefficient of the washing machine drum according to the speed reduction time curve diagram includes: determining the rotational friction torque and electromagnetic resistance torque of the washing machine drum according to the speed reduction time curve; According to the second formula: , determining the rotational friction coefficient and the electromagnetic friction coefficient of the washing machine drum, wherein, is the rotational friction torque, is the electromagnetic resistance torque, is the rotational friction coefficient, m is the empty drum weight of the washing machine drum, N is the average speed during deceleration, and E is the electromagnetic friction coefficient.

7. The method according to claim 1, characterized in that Determining the equivalent radius of the laundry in the drum of the washing machine according to the deceleration time, the eccentricity value, and the preliminary weight includes: Obtaining a radius mapping relationship table, wherein the radius mapping relationship table is a mapping relationship table of the deceleration time, the eccentricity value, the preliminary weight, and the equivalent radius; The equivalent radius of the clothing in the washing machine drum is determined according to the radius mapping relationship table, wherein the equivalent radius includes the distance of the clothing outer contour away from the central axis of the washing machine drum and the distance of the clothing outer contour close to the central axis of the washing machine drum.

8. The method according to claim 1, characterized in that After determining the final weight of the laundry according to the average deceleration torque, the equivalent radius, the deceleration time, the lowest weighing speed, and the highest weighing speed, the method further includes: Washing parameters of the laundry are determined according to the final weight of the laundry, and a washing operation is performed on the laundry according to the washing parameters.

9. A laundry weighing device for a washing machine, characterized in that: include: a first acquiring unit, configured to acquire motor operating parameters and an eccentricity value of a washing machine drum during normal operation of the washing machine, determine a preliminary weight of the laundry according to the motor operating parameters, and determine a maximum weighing speed of the laundry according to the preliminary weight and the eccentricity value; a control unit, configured to control the washing machine drum to operate at the maximum weighing speed and then decelerate to the minimum weighing speed to obtain a deceleration time, and determine an equivalent radius of the clothing within the washing machine drum based on the deceleration time, the eccentricity value, and the preliminary weight, wherein the minimum weighing speed is the speed of the washing machine drum when the clothing breaks away from the drum wall and hits the drum, and the equivalent radius is the distance from the outer contour of the clothing to the central axis of the washing machine drum when the clothing is attached to the inner wall of the washing machine drum; The first determination unit is used to obtain the average deceleration torque of the motor during the deceleration of the washing machine drum, and determine the final weight of the clothes according to the average deceleration torque, the equivalent radius, the deceleration time, the minimum weighing speed, and the maximum weighing speed.

10. A washing machine, characterized in that: include: A controller, wherein the controller is used to execute the laundry weighing method for a washing machine according to any one of claims 1 to 8.

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