Methods and devices for weighing clothes in washing machines

Abstract

This application provides a method, apparatus, and washing machine for weighing clothes in a washing machine. It includes: acquiring motor operating parameters and the eccentricity value of the washing machine drum during normal operation; determining the initial weight of the clothes based on the motor operating parameters; determining the maximum weighing speed of the clothes based on the initial weight and the eccentricity value; controlling the washing machine drum to rotate to the maximum weighing speed and then decelerating to the minimum weighing speed to obtain the deceleration time; determining the equivalent radius of the clothes within the washing machine drum based on the deceleration time, the eccentricity value, and the initial weight; the equivalent radius being the distance from the outer contour of the clothes to the central axis of the washing machine drum when the clothes are against the inner wall of the drum; acquiring the average deceleration torque of the motor during the deceleration process 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. This solves the problem of low accuracy in calculating the weight of clothes in existing washing machine clothing weighing technologies.

Description

Technical Field

[0001] This application relates to the field of garment weighing technology for washing machines, and more specifically, to a method, apparatus and washing machine for weighing garments. Background Technology

[0002] Washing machine garment weighing technology is one of the important directions in the intelligent development of washing machines in recent years. As consumers' demands for washing efficiency, energy saving, and personalization increase, traditional washing machines have certain limitations in sensing garment weight. Traditional washing machines typically rely on preset programs or manually selected modes to complete washing tasks, but this method cannot accurately sense the actual weight of the clothes, easily leading to waste of water, electricity, and detergent, and may also affect washing results. Currently, garment weighing technology has been applied in some high-end intelligent washing machines, but its widespread adoption still faces some challenges, such as the cost and accuracy of sensors, and compatibility with existing washing machine designs.

[0003] Currently, clothing weighing uses speed-up weighing technology, which collects values ​​such as motor current and power during the speed-up process, and calculates the weight of the clothing based on the power. However, parameters such as current and power can have significant errors during the data collection process. The current deviation value usually fluctuates around 10%, which can cause a large error in the calculation result. Summary of the Invention

[0004] The main objective of this application is to provide a method, apparatus, and washing machine for weighing clothes in a washing machine, so as to at least solve the problem that the existing washing machine clothes weighing technology has low accuracy in calculating the weight of clothes.

[0005] To achieve the above objectives, according to one aspect of this application, a method for weighing clothes in a washing machine is provided, comprising: acquiring motor operating parameters and the eccentricity value of the washing machine drum during normal operation of the washing machine; determining the preliminary weight of the clothes based on the motor operating parameters; and determining the maximum weighing speed of the clothes based on the preliminary weight and the eccentricity value; controlling the washing machine drum to rotate to the maximum weighing speed and then decelerating to the minimum weighing speed to obtain the deceleration time; and determining the equivalent radius of the clothes within the washing machine drum based on the deceleration time, the eccentricity value, and the preliminary weight, wherein the minimum weighing speed is the rotational speed of the washing machine drum when the clothes detach 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; acquiring the average deceleration torque of the motor during the deceleration process 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.

[0006] Optionally, the motor operating parameters include motor operating power. Determining the initial 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 rotates to a preset speed; obtaining the current motor operating power when the washing machine drum rotates to the preset speed; and determining the initial weight of the clothes based on the current motor operating power and the correlation curve.

[0007] Optionally, during the process of controlling the washing machine drum to rotate to the maximum weighing speed and then decelerating to the minimum weighing speed, the method further includes: monitoring the real-time deceleration acceleration of the washing machine drum during the deceleration process, and determining the deceleration torque of the motor according to the relationship table between the real-time deceleration acceleration and 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 garment based on the average deceleration torque, the equivalent radius, the deceleration duration, the minimum weighing speed, and the maximum weighing speed includes: according to a first formula: The final weight of the garments is determined, where M is the final weight, m ​​is the empty weight of the washing machine drum, and T is the average deceleration torque. Let E be the coefficient of rotational friction of the washing machine drum, E be the coefficient of electromagnetic friction, and N be the average rotational speed during the deceleration process. The average deceleration acceleration during the deceleration process. The maximum weighing speed is mentioned above. The minimum weighing speed is t, and the deceleration time is t. Let be the inner radius of the washing machine drum. The distance from the center axis of the washing machine drum in the outer contour of the garment. The distance from the outer contour of the garment to the center axis of the washing machine drum. The first moment of inertia, This is the second moment of inertia.

[0009] Optionally, before acquiring the motor operating parameters and the eccentricity value of the washing machine drum during normal operation of the washing machine, the method further includes: acquiring a speed reduction time curve of the washing machine drum in an empty drum state, wherein the speed reduction time curve 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 based on the speed reduction time curve.

[0010] Optionally, determining the rotational friction coefficient and electromagnetic friction coefficient of the washing machine drum based on the rotational speed reduction time curve includes: determining the rotational friction torque and electromagnetic resistance torque of the washing machine drum based on the rotational speed reduction time curve; and determining the rotational friction torque and electromagnetic resistance torque of the washing machine drum based on the second formula: Determine the rotational friction coefficient and the electromagnetic friction coefficient of the washing machine drum, wherein, The rotational friction torque, The electromagnetic drag torque is... Let m be the coefficient of rotational friction, N be the weight of the empty drum of the washing machine, E be the average rotational speed during the deceleration process, and E be the coefficient of electromagnetic friction.

[0011] Optionally, determining the equivalent radius of the garment within the washing machine drum based on the deceleration time, the eccentricity value, and the initial weight includes: obtaining a radius mapping table, wherein the radius mapping table is a mapping table between the deceleration time, the eccentricity value, the initial weight, and the equivalent radius; and determining the equivalent radius of the garment within the washing machine drum based on the radius mapping table, wherein the equivalent radius includes the distance of the garment's outer contour from the central axis of the washing machine drum and the distance of the garment's outer contour from the central axis of the washing machine drum.

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

[0013] According to another aspect of this application, a garment weighing device for a washing machine is provided, comprising: a first acquisition unit, configured to acquire 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 garment based on the motor operating parameters, and determine the maximum weighing speed of the garment based on the preliminary weight and the eccentricity value; a control unit, configured to control the washing machine drum to decelerate to a minimum weighing speed after reaching the maximum weighing speed, acquire the deceleration time, and determine the equivalent radius of the garment within the washing machine drum based on the deceleration time, the eccentricity value, and the preliminary weight, wherein the minimum weighing speed is the rotational speed of the washing machine drum when the garment detaches from the drum wall and hits the drum, and the equivalent radius is the distance from the outer contour of the garment to the central axis of the washing machine drum when the garment is attached to the inner wall of the washing machine drum; and a first determination unit, configured to acquire the average deceleration torque of the motor during the deceleration process of the washing machine drum, and determine the final weight of the garment 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 this application, a washing machine is provided, comprising: a controller for performing any of the washing machine's methods for weighing clothes.

[0015] By applying the technical solution of this 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 initial weight of the clothes is determined based on the motor operating parameters, and the maximum weighing speed of the clothes is determined based on the initial weight and the eccentricity value. The washing machine drum is controlled to rotate to the maximum weighing speed and then decelerate to the minimum weighing speed to obtain the deceleration time. The equivalent radius of the clothes in the washing machine drum is determined based on the deceleration time, the eccentricity value, and the initial weight. The minimum weighing speed is the rotational speed of the washing machine drum when the clothes detach from the drum wall and hit the drum. 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. 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 determined based on the average deceleration torque, the equivalent radius, the deceleration time, the minimum weighing speed, and the maximum weighing speed. This solution determines the maximum weighing speed of the clothes by initially measuring the weight of the clothes using motor operating parameters. During the deceleration process, it comprehensively analyzes the average deceleration torque, equivalent radius, deceleration time, minimum weighing speed, and maximum weighing speed to determine the final weight of the clothes. This avoids the problem of inaccurate weight calculation when the existing technology calculates the weight of clothes based solely on motor operating parameters, which are prone to fluctuations. This solution thus solves the problem of low accuracy in calculating the weight of clothes in existing washing machine weighing technology. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 A hardware structure block diagram of a mobile terminal for performing a method for weighing clothes in a washing machine, according to an embodiment of this application, is shown.

[0018] Figure 2 A schematic flowchart of a method for weighing clothes in a washing machine according to an embodiment of this application is shown.

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

[0020] Figure 4 A flowchart illustrating a specific method for weighing clothes in a washing machine according to an embodiment of this application is shown.

[0021] Figure 5 A schematic diagram illustrating the composition of the speed reduction torque of a motor provided according to an embodiment of this application is shown;

[0022] Figure 6 A schematic diagram illustrating the measurement process of the deceleration torque of a motor according to an embodiment of this application is shown.

[0023] Figure 7 A structural block diagram of a clothes weighing device for a washing machine according to an embodiment of this application is shown. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0026] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0027] As described in the background section, existing washing machine garment weighing technology has low accuracy in calculating garment weight. To address this issue, embodiments of this application provide a method, apparatus, and washing machine for weighing garments.

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

[0029] The methods and embodiments provided in this application can be executed on a mobile terminal, computer terminal, or 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 method of weighing clothes in a washing machine according to an embodiment of the present invention. Figure 1 As shown, a mobile terminal may include one or more ( Figure 1 Only one is shown in the diagram. A processor 102 (which may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data are also shown. The mobile terminal may further include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that... Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the mobile terminal described above. For example, the mobile terminal may also include components that are more... Figure 1 The more or fewer components shown, or having the same Figure 1 The different configurations shown.

[0030] The memory 104 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the washing machine's clothes weighing method in this embodiment of the invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, thereby implementing the above-described 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 instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to the mobile terminal via a network. Examples of the aforementioned networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof. The transmission device 106 is used to receive or send data via a network. Specific examples of the aforementioned networks may include wireless networks provided by the mobile terminal's communication 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 communicate 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] This embodiment provides a method for weighing clothes in a washing machine that runs on a mobile terminal, computer terminal, or similar computing device. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Also, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0032] Figure 2 This is a flowchart of a method for weighing clothes in a washing machine according to an embodiment of this application. Figure 2 As shown, the method includes the following steps:

[0033] Step S201: During normal operation of the washing machine, obtain the motor operating parameters and the eccentricity value of the washing machine drum, determine the preliminary weight of the clothes based on the motor operating parameters, and determine the maximum weighing speed of 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 eccentricity of the drum, a preliminary measurement of the garment's weight is achieved, yielding a preliminary weight estimate. The motor operating parameters reflect the load on the motor as the garment rotates within the drum, while the eccentricity reflects the distribution of the garment within the drum. Using both together allows for a more accurate estimation of the garment's preliminary weight.

[0035] Step S202: Control the washing machine drum to rotate to the highest weighing speed and then reduce the speed to the lowest weighing speed to obtain the deceleration time. Then, determine the equivalent radius of the clothes in the washing machine drum based on the deceleration time, the eccentricity value, and the preliminary weight. The lowest weighing speed is the rotation speed of the washing machine drum when the clothes break off from the drum wall and hit the drum. 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.

[0036] Specifically, the deceleration weighing strategy utilizes the changes in the state of the garment inside the drum (from adhering to the drum wall to detaching from the drum wall), and further refines the weight measurement by calculating parameters such as deceleration time and equivalent radius.

[0037] Step S203: Obtain the average deceleration torque of the motor during the deceleration process of the washing machine drum, and determine 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 clothing than traditional indirect estimation, solving the problem of inaccurate weighing caused by uneven distribution of clothing and fluctuations in motor parameters.

[0039] In this embodiment, by applying the above steps S201, S202, and S203, the maximum weighing speed of the clothes is determined by the preliminary measurement of the weight of the clothes through the motor operating parameters. During the deceleration process of the clothes, the final weight of the clothes is determined by comprehensively analyzing the average deceleration torque, equivalent radius, deceleration time, minimum weighing speed, and maximum weighing speed parameters. This avoids the problem of inaccurate weight calculation of clothes when the existing technology calculates the weight of clothes based solely on the motor operating parameters, which are prone to fluctuations. This solution thus solves the problem of low accuracy in calculating the weight of clothes in existing washing machine weighing technology.

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

[0041] This method constructs a correlation curve between clothing weight and motor power. Based on the motor power of the washing machine drum at a specific speed, this solution can quickly estimate the initial weight of the clothing. This technical feature, based on the linear relationship between motor power and clothing weight, is established through extensive prior experimental data, ensuring the accuracy of the initial weight estimation. In practical applications, motor power measurement can be performed in real time, allowing for the acquisition of initial clothing weight information at any point during washing machine operation, overcoming the inconvenience of traditional weighing methods that require stopping the machine for weighing. Furthermore, this technical feature is adaptable 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, weighing optimization can be achieved for different types of washing machines, further enhancing the versatility and flexibility of the weighing method.

[0042] Specifically, during the process of controlling the washing machine drum to rotate to the maximum weighing speed and then decelerate to the minimum weighing speed, the method further includes: monitoring the real-time deceleration acceleration of the washing machine drum during the deceleration process, and determining the deceleration torque of the motor according to the relationship table between the real-time deceleration acceleration and 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.

[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, which is a key step in improving weighing accuracy. The deceleration acceleration reflects the change in the state of the clothes inside the drum, while the deceleration torque is directly related to the motor's control force on the clothes. Through this technical feature, this solution can monitor and adjust the motor's torque output in real time, ensuring that the clothes smoothly transition from a state of contact with the drum wall to a state of detachment during deceleration, thereby accurately measuring the equivalent radius of the clothes. This technical achievement solves the weighing error problem caused by changes in the state of the clothes inside the drum, making the weighing results more reliable.

[0044] More specifically, determining the final weight of the garment based on the aforementioned average deceleration torque, equivalent radius, deceleration duration, minimum weighing speed, and maximum weighing speed includes: according to the first formula: The final weight of the aforementioned clothing is determined, where M is the final weight, m ​​is the empty weight of the washing machine drum, and T is the average deceleration torque. Here, E is the coefficient of rotational friction of the washing machine drum, and N is the coefficient of electromagnetic friction. The average deceleration acceleration during the deceleration process. This refers to the maximum weighing speed mentioned above. The minimum weighing speed mentioned above is given, and t is the deceleration time mentioned above. The radius of the inner wall of the washing machine drum is given above. The distance from the center axis of the washing machine drum in the outer contour of the aforementioned garment. The distance from the outer contour of the garment to the center axis of the washing machine drum is the distance from the outer contour of the garment. The first moment of inertia, This is the second moment of inertia.

[0045] Among them, the equivalent radius , , A diagram illustrating the possible values ​​is shown below. Figure 3 As shown;

[0046] This method comprehensively analyzes parameters such as average deceleration torque, equivalent radius, and deceleration time using a first formula. This scheme can calculate the final weight of the clothing. This technical feature solves the problem of indirect estimation of clothing weight in traditional weighing methods, achieving direct and accurate measurement of clothing weight. The parameters in the formula cover several key physical quantities of the drum's operation. Through the accurate measurement and calculation of these parameters, the influence of uneven clothing distribution inside the drum and fluctuations in motor parameters on the weighing results can be eliminated.

[0047] Furthermore, before acquiring 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: acquiring a speed reduction time curve of the washing machine drum in an empty drum state, wherein the speed reduction time curve 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 based on the speed reduction time curve.

[0048] This method, before acquiring the motor operating parameters and drum eccentricity value, pre-obtains the drum's rotational speed reduction time curve in an empty state, which is another important step in improving weighing accuracy. This technical feature, by analyzing the drum's operating characteristics in an empty state, can determine the drum's rotational friction coefficient and electromagnetic friction coefficient, providing fundamental parameters for subsequent garment weight measurement. Through this technical feature, this solution can accurately determine the drum's own rotational friction coefficient and electromagnetic friction coefficient, ensuring weighing accuracy.

[0049] Furthermore, based on the aforementioned speed reduction time curve, the rotational friction coefficient and electromagnetic friction coefficient of the washing machine drum are determined, including: determining the rotational friction torque and electromagnetic resistance torque of the washing machine drum based on the aforementioned speed reduction time curve; and based on the second formula: The rotational friction coefficient and the electromagnetic friction coefficient of the washing machine drum are determined, wherein, The aforementioned rotational friction torque, The electromagnetic drag torque mentioned above, Here, m is the rotational friction coefficient, N is the empty drum weight of the washing machine drum, E is the average rotational speed during the deceleration process, and E is the electromagnetic friction coefficient.

[0050] This method determines the rotational friction torque and electromagnetic resistance torque by analyzing the rotational speed reduction time curve, and then calculates the rotational friction coefficient and electromagnetic friction coefficient. This is a crucial technical step in ensuring weighing accuracy in this scheme. The realization of this technical feature is based on the precise measurement of the changes in rotational friction torque and electromagnetic resistance torque during drum operation.

[0051] Specifically, determining the equivalent radius of the clothing within the washing machine drum based on the aforementioned deceleration time, the aforementioned eccentricity value, and the aforementioned initial weight includes: obtaining a radius mapping table, wherein the aforementioned radius mapping table is a mapping table between the aforementioned deceleration time, the aforementioned eccentricity value, the aforementioned initial weight, and the aforementioned equivalent radius; determining the aforementioned equivalent radius of the clothing within the washing machine drum based on the aforementioned radius mapping table, wherein the aforementioned equivalent radius includes the distance of the clothing's outer contour from the central axis of the washing machine drum and the distance of the clothing's outer contour from the central axis of the washing machine drum.

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

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

[0054] This method, after determining the final weight of the clothes, adjusts the washing parameters based on this information, which is a key step in optimizing the washing process and saving resources in this solution. This technical feature, based on the accurate measurement of the clothes' weight, can intelligently adjust parameters such as water level, detergent dosage, and washing time, ensuring washing effectiveness while reducing unnecessary waste of water, electricity, and detergent. In practical applications, this technical feature is not limited to adjusting washing parameters based on the weight of the clothes; it can also take into account factors including, but not limited to, the fabric material, the degree of soiling, and user preferences, further enhancing the intelligence and personalization of washing, and providing users with a more efficient and energy-saving washing experience.

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

[0056] Specific Implementation: A dynamic torque calibration algorithm is introduced based on the existing deceleration weighing method. This algorithm dynamically adjusts the torque measurement benchmark value according to the real-time motion state of the clothes inside the drum (such as the degree of aggregation and uniformity of distribution). For example, when the clothes are tightly aggregated, the algorithm considers that this reduces the free space of the drum, thus affecting the inertial effect of the clothes, and therefore adjusts the measured torque value. In practice, one or more sensors can be set to monitor the pressure distribution inside the drum and the instantaneous power consumption of the motor, using this as the basis for the algorithm to adjust the torque measurement.

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

[0058] To enable those skilled in the art to better understand the technical solution of this application, the implementation process of the washing machine's clothing weighing method of this 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 based on the parameter of rotational inertia in a mechanical model. The fundamental reason is that for models with similar shapes, the larger the rotational inertia, the longer it takes to stop from high speed. Since rotational inertia is directly related to mass, knowing the time it takes to decrease speed from high to low allows direct calculation of the clothes' mass using mechanical formulas. Furthermore, the mass is calculated based on the eccentricity value, the estimated weight of the clothes, and the corrected torque. This method avoids indirect measurement using parameters such as motor power, reducing errors caused by large fluctuations in motor voltage and current. Figure 4As shown, it specifically includes the following:

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

[0061] Once the maximum weighing speed is achieved, the torque of the washing machine motor is controlled to make the washing machine drum reach the maximum weighing speed, and then the deceleration process begins, reducing the speed to the minimum weighing speed. The minimum weighing speed is the speed at which the clothes hit the drum when they detach 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. The change of the motor deceleration torque is monitored in real time. If the difference between two consecutive motor deceleration torques is less than a preset difference, the motor deceleration torque is considered to be smooth. The average deceleration torque of the motor during the deceleration process of the washing machine drum is obtained. 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 frictional torque T1 of the roller when it is empty, based on the rotational frictional torque (mechanical frictional torque) over the entire drum. This torque is used for subsequent calculations. For example, Figure 5 As shown, the motor speed reduction torque includes mechanical friction torque, electromagnetic resistance torque, and additional load torque.

[0064] The measurement process is as follows Figure 6 As shown: First, the washing machine is measured at low speed when the drum is empty to obtain the deceleration time of the washing machine at low speed when the drum is empty. 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, the magnitude of the electromagnetic resistance torque at different speeds can be determined. Since the clothes are considered as additional mass attached to the drum in this model, there is no load resistance torque, and the frictional resistance torque (rotational friction coefficient) remains constant. Summing these three factors yields the precise torque value of the washing machine drum during the deceleration process.

[0066]

[0067]

[0068]

[0069]

[0070] Where M is the mass of the empty cylinder at this point, and T is the deceleration torque. Let E be the coefficient of rotational friction of the washing machine drum, E be the coefficient of electromagnetic friction, and N be the average rotational speed during the deceleration process. The mechanical friction torque of the washing machine drum. The electromagnetic resistance torque of the washing machine drum. Additional torque for the load.

[0071] Clothing speed-up process: First, experiments show that when the rotation speed exceeds 60 revolutions per minute, the clothes already adhere to the outer wall of the drum. At this point, 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 because the rising speed is slow, the degree of eccentricity will be relatively low, which is closer to the ideal state (the clothes are evenly distributed on the surface of the tube wall).

[0073] 2. Rapidly increase the speed to high speed (maximum rotation speed for weighing clothing). Due to the slow ascent in stage 1, the eccentricity of the clothing changes little at this point. To accumulate sufficient inertia and improve the ability to distinguish the deceleration time, the rotation speed of the clothing is increased at this stage, thus lengthening the deceleration time. The eccentricity value of the clothing is read, recorded, and saved during this process.

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

[0075] Data processing stage: In the next stage, based on the deceleration time, weight, and eccentricity of the clothing, appropriate equivalent radii R1, R2, and R3 are selected. The selection of the equivalent radii is as follows... Figure 3 As shown, the processor is waiting to calculate the weight of the clothing.

[0076] Then, the moment of inertia of the garment is calculated, followed by the deduction of its mass, which includes the following steps:

[0077] 1. Calculate the moment of inertia of the clothing. Since the clothing is distributed in a non-uniform circular shape on the tube wall, the moment of inertia needs to be integrated over the radius. Furthermore, the distribution of the clothing needs to be appropriately chosen based on the eccentricity. When there is a large amount of clothing, the formula can be used: Calculate the moment of inertia of the outer ring of clothing. Through the formula: Calculate the moment of inertia of the inner ring of clothing. ,in, , , and Here, M represents the corresponding areal density, M represents the mass of the garment, and N represents the average rotational speed during the deceleration process.

[0078] Among them, the equivalent radii 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] The moment of inertia of the outer ring of clothing can be derived. Moment of inertia of inner ring clothing ;

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

[0081] According to the formula: Calculate the final weight of the clothing, where, , The maximum weighing speed is mentioned above. The minimum weighing speed is t, and the deceleration time is t. denoted as the average deceleration acceleration during the deceleration process, m as the weight of the empty washing machine drum, M as the final weight, E as the electromagnetic friction coefficient, and N as the average rotational speed during the deceleration process.

[0082] Finally, select the appropriate washing parameters based on the final weight of the garments and execute the washing process.

[0083] This embodiment sets up a drum washing machine with a speed-up and then speed-down process, monitoring the time it takes to decrease speed from high to low. By analyzing the additional rotational inertia of the clothes on the drum during rotation and the relative state of the clothes within the drum, the total rotational inertia of the clothes is calculated using the rotational inertia calculation formula. Furthermore, based on the eccentricity value during the stabilization phase and the estimated weight of the clothes, the aggregation state of the clothes in the drum is inferred. Finally, a more accurate weight of the clothes is calculated using corrected torque and rotational inertia.

[0084] This application also provides a garment weighing device for a washing machine. It should be noted that the garment weighing device for a washing machine in this application embodiment can be used to execute the garment weighing method for a washing machine provided in this application embodiment. This device is used to implement the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that implements a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0085] The following describes the clothes weighing device for a washing machine provided in the embodiments of this application.

[0086] Figure 7This is a schematic diagram of a clothes weighing device for a washing machine according to an embodiment of this application. Figure 7 As shown, the device includes:

[0087] The first acquisition unit 71 is used to acquire motor operating parameters and washing machine drum eccentricity value during normal operation of the washing machine, determine the preliminary weight of the clothes based on the motor operating parameters, and determine the maximum weighing speed of the clothes based on the preliminary weight and the eccentricity value.

[0088] The control unit 72 is used to control the washing machine drum to rotate to the maximum weighing speed and then reduce the speed to the minimum weighing speed to obtain the deceleration time, and to determine the equivalent radius of the clothes in the washing machine drum based on the deceleration time, the eccentricity value and the preliminary weight. The minimum weighing speed is the rotation speed of the washing machine drum when the clothes are detached from the drum wall and hit the drum. 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.

[0089] The first determining unit 73 is used to obtain the average deceleration torque of the motor during the deceleration process of the washing machine drum, and to determine 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.

[0090] In this embodiment, the first acquisition unit is used to acquire 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 based on the motor operating parameters, and determine the maximum weighing speed of the clothes based on the preliminary weight and the eccentricity value; the control unit is used to control the washing machine drum to decelerate to the minimum weighing speed after reaching the maximum weighing speed, acquire the deceleration time, and determine the equivalent radius of the clothes in the washing machine drum based on the deceleration time, the eccentricity value, and the preliminary weight, wherein the minimum weighing speed is the rotational speed of the washing machine drum when the clothes detach 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; the first determination unit is used to acquire the average deceleration torque of the motor during the deceleration process of the washing machine drum, and determine 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. This solution determines the maximum weighing speed of the clothes by initially measuring the weight of the clothes using motor operating parameters. During the deceleration process, it comprehensively analyzes the average deceleration torque, equivalent radius, deceleration time, minimum weighing speed, and maximum weighing speed to determine the final weight of the clothes. This avoids the problem of inaccurate weight calculation when the existing technology calculates the weight of clothes based solely on motor operating parameters, which are prone to fluctuations. This solution thus solves the problem of low accuracy in calculating the weight of clothes in existing washing machine weighing technology.

[0091] As an optional solution, the motor operating parameters include the motor operating power. 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 washing machine drum rotates to a preset speed. The first determination module is used to acquire the current motor operating power when the washing machine drum rotates to the preset speed, and determine the preliminary weight of the clothes based on the current motor operating power and the correlation curve.

[0092] In one optional embodiment, the device further includes a second determining unit, configured to monitor the real-time deceleration acceleration of the washing machine drum during the process of controlling the washing machine drum to decelerate from the highest weighing speed to the lowest weighing speed, and to determine the deceleration torque of the motor according to a table relating real-time deceleration acceleration to torque acceleration, wherein the table relating torque acceleration to torque acceleration is a table relating the deceleration acceleration of the washing machine drum to the deceleration torque of the motor.

[0093] In one alternative approach, the first determining unit includes a second determining module, used to determine the first formula: The final weight of the aforementioned clothing is determined, where M is the final weight, m ​​is the empty weight of the washing machine drum, and T is the average deceleration torque. Here, E is the coefficient of rotational friction of the washing machine drum, and N is the coefficient of electromagnetic friction. The average deceleration acceleration during the deceleration process. This refers to the maximum weighing speed mentioned above. The minimum weighing speed mentioned above is given, and t is the deceleration time mentioned above. The radius of the inner wall of the washing machine drum is given above. The distance from the center axis of the washing machine drum in the outer contour of the aforementioned garment. The distance from the outer contour of the garment to the center axis of the washing machine drum is the distance from the outer contour of the garment. The first moment of inertia, This is the second moment of inertia.

[0094] In one optional embodiment, the device further includes a second acquisition unit and a third determination unit; the second acquisition unit is used to acquire a speed reduction time curve of the washing machine drum in an empty drum state before acquiring the motor operating parameters and the eccentricity value of the washing machine drum during normal operation of the washing machine, wherein the speed reduction time curve is obtained by controlling the washing machine drum to reduce speed at different speeds multiple times; the third determination unit is used to determine the rotational friction coefficient and electromagnetic friction coefficient of the washing machine drum based on the speed reduction time curve.

[0095] In one optional scheme, the third determining unit includes a third determining module and a fourth determining module; the third determining module is used to determine the rotational friction torque and electromagnetic resistance torque of the washing machine drum based on the aforementioned speed reduction time curve; the fourth determining module is used to determine the rotational friction torque and electromagnetic resistance torque of the washing machine drum based on the second formula: The rotational friction coefficient and the electromagnetic friction coefficient of the washing machine drum are determined, wherein, The aforementioned rotational friction torque, The electromagnetic drag torque mentioned above, Here, m is the rotational friction coefficient, N is the empty drum weight of the washing machine drum, E is the average rotational speed during the deceleration process, and E is the electromagnetic friction coefficient.

[0096] In one optional embodiment, the control unit includes an acquisition module and a fifth determination module; the acquisition module is used to acquire a radius mapping table, wherein the radius mapping table is a mapping table of the deceleration time, the eccentricity value, the initial weight and the equivalent radius; the fifth determination module is used to determine the equivalent radius of the clothing in the washing machine drum according to the radius mapping table, wherein the equivalent radius includes the distance of the clothing's outer contour away from the central axis of the washing machine drum and the distance of the clothing's outer contour close to the central axis of the washing machine drum.

[0097] In an optional embodiment, the device further includes an execution unit, configured to determine the washing parameters of the garments based on the final weight of the garments after determining the final weight of the garments based on the average deceleration torque, the equivalent radius, the deceleration duration, the minimum weighing speed, and the maximum weighing speed, and to perform a washing operation on the garments based on the washing parameters.

[0098] The aforementioned washing machine's garment weighing device includes a processor and a memory. The first acquisition unit, control unit, and first determination unit are all stored as program units in the memory, and the processor executes these program units stored in the memory to achieve the corresponding functions. All of the above modules reside in the same processor; alternatively, the modules may be located in different processors in any combination.

[0099] The processor contains a kernel, which retrieves the corresponding program unit from memory. One or more kernels can be configured; adjusting kernel parameters can address the problem of low accuracy in calculating clothing weight in existing washing machine weighing technologies.

[0100] The memory may include non-permanent memory in computer-readable media, such as 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] This invention provides a washing machine, including a controller, which is used to execute any of the above-described methods for weighing clothes in the washing machine.

[0102] This invention provides a computer-readable storage medium including a stored program, wherein, when the program is executed, it controls the device containing the computer-readable storage medium to perform the washing machine's method for weighing clothes.

[0103] Specifically, the methods for weighing clothes in a washing machine include:

[0104] Step S201: During normal operation of the washing machine, obtain the motor operating parameters and the eccentricity value of the washing machine drum, determine the preliminary weight of the clothes based on the motor operating parameters, and determine the maximum weighing speed of the clothes based on the preliminary weight and the eccentricity value.

[0105] Step S202: Control the washing machine drum to rotate to the highest weighing speed and then reduce the speed to the lowest weighing speed to obtain the deceleration time. Then, determine the equivalent radius of the clothes in the washing machine drum based on the deceleration time, the eccentricity value, and the preliminary weight. The lowest weighing speed is the rotation speed of the washing machine drum when the clothes break off from the drum wall and hit the drum. 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.

[0106] Step S203: Obtain the average deceleration torque of the motor during the deceleration process of the washing machine drum, and determine 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] This invention provides a processor for running a program, wherein the program executes the washing machine's method for weighing clothes.

[0108] Specifically, the methods for weighing clothes in a washing machine include:

[0109] Step S201: During normal operation of the washing machine, obtain the motor operating parameters and the eccentricity value of the washing machine drum, determine the preliminary weight of the clothes based on the motor operating parameters, and determine the maximum weighing speed of the clothes based on the preliminary weight and the eccentricity value.

[0110] Step S202: Control the washing machine drum to rotate to the highest weighing speed and then reduce the speed to the lowest weighing speed to obtain the deceleration time. Then, determine the equivalent radius of the clothes in the washing machine drum based on the deceleration time, the eccentricity value, and the preliminary weight. The lowest weighing speed is the rotation speed of the washing machine drum when the clothes break off from the drum wall and hit the drum. 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.

[0111] Step S203: Obtain the average deceleration torque of the motor during the deceleration process of the washing machine drum, and determine 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] This invention provides an electronic device, which includes a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, it performs at least the following steps:

[0113] Step S201: During normal operation of the washing machine, obtain the motor operating parameters and the eccentricity value of the washing machine drum, determine the preliminary weight of the clothes based on the motor operating parameters, and determine the maximum weighing speed of the clothes based on the preliminary weight and the eccentricity value.

[0114] Step S202: Control the washing machine drum to rotate to the highest weighing speed and then reduce the speed to the lowest weighing speed to obtain the deceleration time. Then, determine the equivalent radius of the clothes in the washing machine drum based on the deceleration time, the eccentricity value, and the preliminary weight. The lowest weighing speed is the rotation speed of the washing machine drum when the clothes break off from the drum wall and hit the drum. 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.

[0115] Step S203: Obtain the average deceleration torque of the motor during the deceleration process of the washing machine drum, and determine 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 mentioned in this article can be servers, PCs, tablets, mobile phones, etc.

[0117] This application also provides a computer program product, which, when executed on a data processing device, is suitable for executing an initialization program having at least the following method steps:

[0118] Step S201: During normal operation of the washing machine, obtain the motor operating parameters and the eccentricity value of the washing machine drum, determine the preliminary weight of the clothes based on the motor operating parameters, and determine the maximum weighing speed of the clothes based on the preliminary weight and the eccentricity value.

[0119] Step S202: Control the washing machine drum to rotate to the highest weighing speed and then reduce the speed to the lowest weighing speed to obtain the deceleration time. Then, determine the equivalent radius of the clothes in the washing machine drum based on the deceleration time, the eccentricity value, and the preliminary weight. The lowest weighing speed is the rotation speed of the washing machine drum when the clothes break off from the drum wall and hit the drum. 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.

[0120] Step S203: Obtain the average deceleration torque of the motor during the deceleration process of the washing machine drum, and determine 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] It is obvious to those skilled in the art that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those described herein, or they 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 understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0123] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0124] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0125] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

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

[0127] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0128] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (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, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0129] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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 "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0131] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for weighing clothes in a washing machine, characterized in that, include: During normal operation of the washing machine, the motor operating parameters and the eccentricity value of the washing machine drum are acquired. The initial weight of the clothes is determined based on the motor operating parameters, and the maximum weighing speed of the clothes is determined based on the initial weight and the eccentricity value. The washing machine drum is controlled to rotate to the highest weighing speed and then reduced to the lowest weighing speed to obtain the deceleration time. The equivalent radius of the clothes in the washing machine drum is determined based on the deceleration time, the eccentricity value and the initial weight. The lowest weighing speed is the rotation speed of the washing machine drum when the clothes are detached from the drum wall and hit the drum. 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. The average deceleration torque of the motor during the drum deceleration process of the washing machine is obtained, and the final weight of the clothes is determined based on the average deceleration torque, the equivalent radius, the deceleration time, the minimum weighing speed, and the maximum weighing speed. The final weight of the garment is determined based on the average deceleration torque, the equivalent radius, the deceleration duration, the minimum weighing speed, and the maximum weighing speed, including: According to the first formula: The final weight of the garments is determined, where M is the final weight, m ​​is the empty weight of the washing machine drum, and T is the average deceleration torque. Let E be the coefficient of rotational friction of the washing machine drum, E be the coefficient of electromagnetic friction, and N be the average rotational speed during the deceleration process. The average deceleration acceleration during the deceleration process. The maximum weighing speed is mentioned above. The minimum weighing speed is t, and the deceleration time is t. Let be the inner radius of the washing machine drum. The distance from the center axis of the washing machine drum in the outer contour of the garment. The distance from the outer contour of the garment to the center axis of the washing machine drum. The first moment of inertia, This is the second moment of inertia.

2. The method according to claim 1, characterized in that, The motor operating parameters include the motor's operating power. Based on these parameters, the preliminary weight of the clothing is determined, including: When the washing machine drum rotates to a preset speed, a correlation curve between the weight of the clothes and the operating power of the motor is constructed; When the washing machine drum reaches a preset speed, the current motor operating power is obtained, and the preliminary weight of the clothes is determined based on the current motor operating power and the correlation curve.

3. The method according to claim 1, characterized in that, During the process of controlling the washing machine drum to rotate to the maximum weighing speed and then reduce the speed to the minimum 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 according to the relationship table between the real-time deceleration acceleration and torque acceleration. 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, characterized in that, Before acquiring the motor operating parameters and the eccentricity value of the washing machine drum during normal operation of the washing machine, the method further includes: Obtain a speed reduction time curve of the washing machine drum in an empty drum state, wherein the speed reduction time curve is obtained by controlling the washing machine drum to reduce speed at different speeds multiple times; The rotational friction coefficient and electromagnetic friction coefficient of the washing machine drum are determined based on the aforementioned speed reduction time curve.

5. The method according to claim 4, characterized in that, The rotational friction coefficient and electromagnetic friction coefficient of the washing machine drum are determined based on the aforementioned speed reduction time curve, including: The rotational friction torque and electromagnetic resistance torque of the washing machine drum are determined based on the aforementioned speed reduction time curve. According to the second formula: Determine the rotational friction coefficient and the electromagnetic friction coefficient of the washing machine drum, wherein, The rotational friction torque, The electromagnetic drag torque is... Let m be the coefficient of rotational friction, N be the weight of the empty drum of the washing machine, E be the average rotational speed during the deceleration process, and E be the coefficient of electromagnetic friction.

6. The method according to claim 1, characterized in that, Determining the equivalent radius of the clothing within the washing machine drum based on the deceleration time, the eccentricity value, and the initial weight includes: Obtain a radius mapping table, wherein the radius mapping table is a mapping table of the deceleration time, the eccentricity value, the initial weight and the equivalent radius; The equivalent radius of the garment within the washing machine drum is determined according to the radius mapping table, wherein the equivalent radius includes the distance of the garment's outer contour from the central axis of the washing machine drum and the distance of the garment's outer contour from the central axis of the washing machine drum.

7. The method according to claim 1, characterized in that, After determining the final weight of the garment based on the average deceleration torque, the equivalent radius, the deceleration duration, the minimum weighing speed, and the maximum weighing speed, the method further includes: The washing parameters of the garment are determined based on its final weight, and the garment is then washed according to the washing parameters.

8. A garment weighing device for a washing machine, employing the garment weighing method of a washing machine according to any one of claims 1 to 7, characterized in that, include: The first acquisition unit is used to acquire 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 based on the motor operating parameters, and determine the maximum weighing speed of the clothes based on the preliminary weight and the eccentricity value. The control unit is used to control the washing machine drum to rotate to the maximum weighing speed and then reduce the speed to the minimum weighing speed to obtain the deceleration time, and to determine the equivalent radius of the clothes in the washing machine drum based on the deceleration time, the eccentricity value and the initial weight, wherein the minimum weighing speed is the rotational speed of the washing machine drum when the clothes are detached 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; The first determining unit is used to obtain the average deceleration torque of the motor during the deceleration process of the washing machine drum, and to determine 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.

9. A washing machine, characterized in that, include: A controller for performing the method for weighing clothes in a washing machine according to any one of claims 1 to 7.

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