Dehydration control method of washing machine and washing machine

Abstract

The embodiment of the invention discloses a dehydration control method of a washing machine and the washing machine, and belongs to the technical field of washing machines. The dehydration control method comprises the following steps: before entering a dehydration stage, obtaining clothes attribute parameters; in the dewatering stage, drum collision parameters are obtained, and the target dewatering rotating speed of the washing machine is determined according to the clothes attribute parameters and the drum collision parameters; controlling the washing machine to dewater according to the target dewatering speed. According to the embodiment, the target dewatering rotating speed is determined by combining the clothes attribute parameters with the drum collision parameters, so that the dewatering noise can be effectively reduced, the dewatering success rate is increased, and the user experience is improved.

Description

Technical Field

[0001] The present application relates to the field of washing machines, and more particularly, to a dehydration control method for a washing machine and a washing machine. Background Art

[0002] When a washing machine is dehydrating, eccentricity will occur due to uneven distribution of the laundry load, resulting in the situation that the cylinder collides during rotation, generating huge noise and even causing the washing machine to displace. In the prior art, the control of the dehydration speed only considers the influence of a single factor, such as the vibration of the cylinder. However, the reasons for dehydration imbalance are affected by multiple factors. The control accuracy of the dehydration speed with a single parameter is low, which will increase the number of attempts to increase the dehydration speed, prolong the dehydration time, and reduce the dehydration efficiency. Summary of the Invention

[0003] An embodiment of the present application provides a dehydration control method for a washing machine to at least solve the technical problem of increasing the number of dehydration attempts and reducing the dehydration efficiency by only considering a single factor to control the dehydration speed.

[0004] According to the first aspect of the embodiments of the present application, a dehydration control method for a washing machine is provided. The dehydration control method includes: Before entering the dehydration stage, obtain laundry attribute parameters; the laundry attribute parameters include at least one of the laundry weight, the laundry water absorption rate, and the laundry moisture content. The laundry weight is the weight of the laundry before entering the washing stage, and the laundry moisture content is the moisture content of the laundry before entering the dehydration stage; During the dehydration stage, obtain the cylinder collision parameters, and determine the target dehydration speed of the washing machine according to the laundry attribute parameters and the cylinder collision parameters; the cylinder collision parameters include at least one of the cylinder collision frequency and the cylinder collision amplitude; Control the washing machine to dehydrate at the target dehydration speed.

[0005] By adopting this embodiment, the target dehydration speed is determined by combining the laundry attribute parameters with the cylinder collision parameters, so that the dehydration noise can be effectively reduced, the dehydration success rate can be improved, and the user experience can be enhanced.

[0006] In combination with the first aspect, in an alternative implementation manner of the embodiments of the present application, the laundry water absorption rate is characterized by the water inlet rate when the washing machine first fills with water; And / or, the laundry moisture content is characterized by the drainage rate before entering the dehydration stage at the end of the rinsing stage.

[0007] In combination with the first aspect, in an alternative implementation manner of the embodiments of the present application, the determining the target dehydration speed of the washing machine according to the laundry attribute parameters and the cylinder collision parameters includes: Input the clothing parameters of the washing machine and the parameters of the collision drum into a pre-trained neural network model, and output the target dehydration speed through the neural network model.

[0008] Combined with the first aspect, in an alternative implementation manner of the embodiment of the present application, the parameters of the collision drum are obtained by detecting through a collision drum detection circuit based on a buzzer.

[0009] According to the second aspect of the embodiment of the present application, a washing machine is provided, and the washing machine adopts the dehydration control method proposed in the first aspect of the embodiment of the present application.

[0010] Combined with the second aspect, in an alternative implementation manner of the embodiment of the present application, the washing machine includes a collision drum detection circuit based on a buzzer, and the collision drum detection circuit includes: A buzzer module, the buzzer module includes a buzzer with a buzzer function, the buzzer can be directly or indirectly affected by the vibration of the washing drum, and generates a voltage signal based on the vibration of the washing drum; A signal transmission module, arranged between the voltage signal output end of the buzzer and the signal input end of the control module, at least used to transmit the voltage signal to the control module; A control module, electrically connected to the control end of the buzzer module, which can transmit a vibration detection signal to the control end of the buzzer module to control the buzzer module to be in a state capable of generating the voltage signal, and the control module determines whether a collision of the drum occurs according to the voltage signal, and generates the parameters of the collision drum of the washing machine when it is determined that a collision of the drum occurs.

[0011] Combined with the second aspect, in an alternative implementation manner of the embodiment of the present application, the signal transmission module is used to adjust the voltage signal during the process of transmitting the voltage signal, and the adjustment includes at least one of filtering and amplification.

[0012] Combined with the second aspect, in an alternative implementation manner of the embodiment of the present application, the signal transmission module includes a DC blocking capacitor and an amplifier; The first end of the DC blocking capacitor is electrically connected to the voltage signal output end of the buzzer, and the second end of the DC blocking capacitor is electrically connected to the positive input end of the amplifier; The negative input end of the amplifier is connected with a resistor that affects the amplification factor of the amplifier, and the output end of the amplifier is electrically connected to the signal input end of the control module.

[0013] In combination with the second aspect, in an alternative implementation of the embodiment of the present application, the buzzer includes a sound generating unit, the sound generating unit includes a piezoelectric material, the sound generating unit generates sound by using the inverse piezoelectric effect of the piezoelectric material, and the sound generating unit generates the voltage signal under the direct or indirect vibration of the washing tub by using the direct piezoelectric effect of the piezoelectric material.

[0014] In combination with the second aspect, in an alternative implementation of the embodiment of the present application, the buzzer module further includes a bias resistor and a triode, the triode and the bias resistor are connected in series in sequence along the current flow direction, and the buzzer is connected in parallel with the bias resistor; The vibration detection signal is used to control the triode to be continuously in the conducting state; When the control module controls the buzzer to implement the beeping function, it transmits a pulse signal to the base of the triode to make the triode conduct and disconnect periodically.

[0015] In combination with the second aspect, in an alternative implementation of the embodiment of the present application, the control module is configured to: Sample the voltage signal transmitted by the signal transmission module and then perform normalization processing; Filter the interference signal in the sampled signal after the normalization processing; Determine the tub hitting parameters according to the filtered sampled signal.

[0016] In combination with the second aspect, in an alternative implementation of the embodiment of the present application, the control module is further configured to: Take every continuous preset number of sampled signals as a sampling group and determine the root mean square calculation value of each sampling group; When the root mean square calculation value is greater than a preset value, record a tub hitting signal; Determine the time interval between two adjacent tub hitting signals; Determine the tub hitting amplitude according to the root mean square calculation value and determine the tub hitting frequency according to the time interval. Description of the Drawings

[0017] By referring to the accompanying drawings and describing its exemplary embodiments in detail, the above and other objects, features and advantages of the present disclosure will become more apparent. The following described drawings are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 is a schematic structural diagram of a washing machine provided by an embodiment of the present application.

[0019] Figure 2It is the dehydration flow chart of the washing machine provided by the embodiment of the present application.

[0020] Figure 3 It is the dehydration flow chart of the washing machine in a specific example of the present application.

[0021] Figure 4 It is the neural network classification model provided by the embodiment of the present application.

[0022] Figure 5 It is the circuit diagram for detecting barrel collision based on a buzzer provided by the embodiment of the present application.

[0023] Figure 6 It is the signal processing flow chart of the barrel collision detection circuit provided by the embodiment of the present application.

[0024] The reference numerals are as follows: 1. Function button; 2. Display module; 3. Buzzer; 4. Laundry barrel; 5. Cabinet. Detailed implementation manners

[0025] In order to enable those skilled in the art of the present technology to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present application.

[0026] It should be understood that the "multiple" mentioned herein refers to two or more. In the description of the embodiments of the present application, unless otherwise specified, " / " means "or". For example, A / B may represent A or B; the "and / or" herein is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, terms such as "first" and "second" are used to distinguish the same items or similar items with basically the same functions and effects. Those skilled in the art can understand that the terms "first", "second", etc. do not limit the quantity and execution order, and the terms "first", "second", etc. do not necessarily limit to be different.

[0027] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily limit to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0028] This embodiment proposes a dehydration control method for a washing machine. The type of washing machine to which the dehydration control method of this embodiment is applied is not clearly limited, and it can be a drum washing machine or a pulsator washing machine.

[0029] Taking a drum washing machine as an example, the structure of the washing machine is referred to Figure 1 , which includes a cabinet 5 and a washing tub 4 disposed inside the cabinet 5. A clothing inlet is provided at a position corresponding to the tub opening of the washing tub 4 on the front side of the cabinet 5. A machine door that can open and close the clothing inlet is provided at the clothing inlet. A function area is provided above the clothing inlet, and the function area includes function buttons 1 and a display module 2. A buzzer 3 is installed on the display module 2, and the display module 2 can also display the working state of the buzzer 3.

[0030] It should be noted that the above is only a specific example of the washing machine in this embodiment, and the structural form of the washing machine to which the dehydration control method of this embodiment is applied is not limited to the above description, and the protection scope of this application cannot be limited thereby.

[0031] Referring to Figure 2 's dehydration flow chart, the dehydration control method includes the following steps: S21. Before entering the dehydration stage, obtain clothing attribute parameters; S22. During the dehydration stage, obtain the barrel collision parameters, and determine the target dehydration speed of the washing machine according to the clothing attribute parameters and the barrel collision parameters; S23. Control the washing machine to dehydrate at the target dehydration speed.

[0032] In this embodiment, before the washing machine enters the dehydration stage, it is necessary to obtain clothing attribute parameters in advance, where the clothing attribute parameters include at least one of clothing weight, clothing water absorption rate, and clothing moisture content. The barrel collision parameters include one of the barrel collision frequency and the barrel collision amplitude. During the dehydration stage, after the clothes in the tub are distributed and the eccentricity value of the washing tub is lower than the preset eccentricity value, dehydrate at the preset dehydration speed first. During the dehydration process, a slight barrel collision may occur. At this time, obtain the barrel collision parameters, combine the barrel collision parameters with the clothing attribute parameters to determine the target dehydration speed, and then control the washing machine to dehydrate at the target dehydration speed, thereby effectively reducing the dehydration noise and improving the dehydration efficiency.

[0033] Among them, the clothing weight is the weight of the clothing in a dry state. For example, before entering the washing stage, the clothing is weighed first, and the dry clothing weight obtained at this time is the clothing weight. The water absorption rate of the clothing is the ability of the clothing to absorb water, while the moisture content of the clothing is the degree of dampness or the water content of the clothing, and the moisture content of the clothing is the moisture content of the clothing before entering the dehydration stage. It should be noted that in this embodiment, before entering the dehydration stage refers to the moisture content of the clothing at the end of the clothing rinsing stage, when the rinsing water in the drum is drained to the preset lowest water level in the washing drum and has not yet entered the dehydration stage.

[0034] In the actual application process, the water absorption rate of the clothing can be characterized by the water inlet rate when the washing machine first fills with water, and the water inlet rate is equal to the target water level / water inlet duration. When the water inlet level is the same, the longer the water inlet duration, the smaller the water inlet rate and the greater the water absorption rate of the clothing. On the contrary, the shorter the water inlet duration, the greater the water inlet rate and the smaller the water absorption rate of the clothing. When the water inlet duration is the same, the smaller the water inlet level, the smaller the water inlet rate and the greater the water absorption rate of the clothing. On the contrary, the greater the water inlet level, the greater the water inlet rate and the smaller the water absorption rate of the clothing. Therefore, the water absorption rate of the clothing can be characterized by the water inlet rate when the washing machine first fills with water.

[0035] And / or, the moisture content of the clothing is characterized by the drainage rate before entering the dehydration stage at the end of the rinsing stage, and the drainage rate is equal to the water level before drainage / drainage duration. When the water level before drainage is the same, the longer the drainage duration, the smaller the drainage rate and the smaller the moisture content of the clothing. On the contrary, the shorter the drainage duration, the greater the drainage rate and the greater the moisture content of the clothing. When the drainage duration is the same, the higher the water level before drainage, the greater the drainage rate and the greater the moisture content of the clothing. On the contrary, the lower the water level before drainage, the smaller the drainage rate and the smaller the moisture content of the clothing. Therefore, the moisture content of the clothing can be characterized by the drainage rate before entering the dehydration stage at the end of the rinsing stage.

[0036] In this embodiment, since the washing machine separates the water in the clothing by the high-speed rotation of the washing drum during dehydration, but when the clothing is unevenly distributed in the washing drum, eccentricity will occur, resulting in the rotation of the washing drum deviating from the central axis and colliding with the side wall of the washing machine body. Whether the drum collision will occur is related to the clothing properties. In addition, the degree of collision during drum collision is also related to the dehydration speed and the acceleration (deceleration) control strategy. In order to more accurately control the dehydration speed, avoid frequent speed reduction when there is a minor drum collision, resulting in an extended dehydration time, and at the same time, when there is a major drum collision, the speed should also be reduced in a timely manner to avoid further aggravation of the drum collision. Therefore, in this embodiment, the clothing property parameters are combined with the drum collision parameters to determine the dehydration speed, so as to improve the dehydration success rate and shorten the dehydration duration.

[0037] In an alternative implementation, determining the target dehydration speed of the washing machine based on the clothing attribute parameters and the drum hitting parameters includes: inputting the clothing parameters and the drum hitting parameters of the washing machine into a pre-trained neural network model, and outputting the target dehydration speed through the neural network model.

[0038] Specifically, in combination with Figure 3 the dehydration flow chart, after determining the clothing attribute parameters and the drum hitting parameters, input the clothing attribute parameters, such as clothing weight, clothing water absorption rate (which can be characterized by the water inlet rate), and clothing moisture content (which can be characterized by the drainage rate), into the input layer of the pre-trained neural network model, and finally output the target dehydration speed from the output layer of the neural network model.

[0039] Since the clothing eccentricity is related to the weight, water absorption rate, and moisture content of the clothing, and the setting of the dehydration speed is also related to the current vibration amplitude and vibration frequency, these several parameters are selected as the characteristic parameters for determining the target dehydration speed. Since the setting of the target dehydration speed is affected by multiple factors, and the relationship between each influencing factor and the target dehydration speed is highly complex and non-linear, in this embodiment, a neural network classifier is used to establish the relationship between the target dehydration speed and the characteristic parameters.

[0040] In an example, the pre-trained neural network model is as Figure 4 shown. This model consists of an input layer, a fully connected layer, a ReLU activation function, a softmax activation function, and an output layer. The first fully connected layer of the neural network is connected to the input of the neural network. The fully connected layer multiplies the input by a weight matrix. After the fully connected layer, an activation function is connected. Here, the selected activation function is ReLU, which accelerates the convergence speed of the neural network by setting negative inputs to zero and simplifies the calculation. The final fully connected layer and the subsequent Softmax activation function generate the output target dehydration speed of the network, that is, the optimal dehydration speed. This neural network is trained using data with higher dehydration efficiency selected from experimental test data.

[0041] It should be noted that the "clothing" referred to in this embodiment generally refers to any item that may be processed in the washing machine, including but not limited to: clothes, bed sheets, quilt covers, dolls, pillowcases, etc.

[0042] In an alternative implementation, the drum hitting parameters are obtained by detecting through a drum hitting detection circuit based on a buzzer.

[0043] In this embodiment, the buzzer is utilized to detect the parameters of the collision cylinder, thus eliminating the need to install additional sensors and effectively reducing production costs. Specifically, the sound generating unit of the buzzer is made of piezoelectric material, and the inverse piezoelectric effect of the piezoelectric material is used to make the buzzer sound. Additionally, the direct piezoelectric effect of the piezoelectric material is utilized to generate a voltage signal under the direct or indirect vibration of the washing cylinder, and finally, the voltage signal is analyzed and processed to obtain the parameters of the collision cylinder. In other implementable ways, vibration sensors, distance sensors, proximity switches, etc. can also be used to detect the parameters of the collision cylinder.

[0044] This embodiment also proposes a washing machine that adopts the dehydration control method proposed above.

[0045] In an alternative implementation, the washing machine includes a collision cylinder detection circuit based on a buzzer. The collision cylinder detection circuit includes a buzzer module, a signal transmission module, and a control module.

[0046] Referring to Figure 5 the circuit diagram, the buzzer module includes a buzzer Buzzl with a buzzing function. The buzzer can be directly or indirectly affected by the vibration of the washing cylinder and generate a voltage signal based on the vibration. In one example, the buzzer includes a sound generating unit, and the sound generating unit includes piezoelectric material. The sound generating unit uses the inverse piezoelectric effect of the piezoelectric material to make a sound and uses the direct piezoelectric effect of the piezoelectric material to generate a voltage signal under the direct or indirect vibration of the washing cylinder.

[0047] The signal transmission module is arranged between the voltage signal output end of the buzzer and the signal input end of the control module, and is at least used to transmit the voltage signal to the control module MCU.

[0048] The control module is electrically connected to the control end of the buzzer module. It can transmit a vibration detection signal to the control end of the buzzer module to control the buzzer module to be in a state where it can generate a voltage signal. The control module determines whether a collision cylinder occurs based on the voltage signal and generates the parameters of the collision cylinder of the washing machine when it determines that a collision cylinder occurs. The control module can also transmit a buzzing function signal to the control end of the buzzer module to control the buzzer module to be in a state where it can make the buzzer generate a buzz.

[0049] In an alternative implementation, referring to Figure 5, the signal transmission module is used to adjust the voltage signal during the process of transmitting the voltage signal, and the adjustment includes at least one of filtering and amplification. In one example, the signal transmission module includes a DC-blocking capacitor C1 and an amplifier OP. The first end of the DC-blocking capacitor is electrically connected to the voltage signal output end of the buzzer, and the second end of the DC-blocking capacitor is electrically connected to the positive input end of the amplifier. The DC-blocking capacitor C1 is used to filter out the DC voltage signal in the voltage signal and retain the AC voltage signal. The amplifier amplifies the voltage signal and then transmits it to the control module. Among them, resistors R4 and R5 that affect the amplification factor of the amplifier are connected to the inverting input end of the amplifier, and the output end of the amplifier is electrically connected to the signal input end of the control module.

[0050] In an alternative implementation, the buzzer module further includes a bias resistor R2 and a triode Q1. The triode and the bias resistor are connected in series in sequence along the current flow direction, and the buzzer is connected in parallel with the bias resistor. The vibration detection signal is used to control the triode to be continuously in the conducting state. When the control module controls the buzzer to achieve the buzzing function, a pulse signal is transmitted to the base of the triode to make the triode conduct and disconnect periodically.

[0051] The vibration detection circuit based on the buzzer is introduced below in combination with specific examples.

[0052] The striker detection circuit is as Figure 5 shown. The part corresponding to the solid-line circuit is the buzzer module, and the part corresponding to the dotted-line circuit is the signal transmission module.

[0053] When the buzzer Buzz1 works, the conduction and cutoff of the triode Q1 are controlled by the I / O port of the control module MCU to make the buzzer Buzz1 sound, and the frequency of the sound is controlled by the frequency of the square wave sent by the I / O pin. Among them, VCC is the power supply for the buzzer, R1 and R3 are current-limiting resistors, and R2 is a bias resistor.

[0054] The buzzer sound generating unit is made of piezoelectric material, and its principle is based on the inverse piezoelectric effect of the piezoelectric material. The material deforms when subjected to an alternating voltage, thereby generating vibration. Similarly, the piezoelectric material in the buzzer sound generating unit also has the direct piezoelectric effect, that is, an external vibration acting on the material will generate a voltage signal. Using this characteristic of the buzzer, the buzzer can be extended to become a striker detection sensor to detect the occurrence of washing machine striker. When a striker occurs, the washing tub collides with the side wall of the cabinet, and the vibration signal will be transmitted along the cabinet structure to the buzzer module.

[0055] When the buzzer works as a striker detection sensor, the I / O outputs a high level, the triode Q1 is always on, and the voltage on the resistor R2 is equal to the DC bias voltage U1 of the power supply VCC on R2 plus the AC voltage Uac generated by the vibration of the buzzer. The voltage signal passes through a voltage stabilizing diode D1, whose function is to prevent the generated voltage from being too high and damaging the microcontroller MCU. Then, a DC blocking capacitor C1 is used to remove the DC bias voltage U1, and only the vibration AC voltage signal Uac is input to the amplifier OP. The amplification factor of the amplifier is adjusted by the resistors R4 and R5. After the amplifier amplifies the vibration AC voltage signal, it is transmitted to the control module MCU. After the control module MCU detects and analyzes the voltage signal generated by the piezoelectric material of the buzzer, the striker parameters are obtained.

[0056] In an alternative implementation, the control module is configured to: Sample the voltage signal transmitted by the signal transmission module and then perform normalization processing; Filter the interference signals in the sampled signals after normalization processing; Determine the striker parameters based on the filtered sampled signals.

[0057] Specifically, the vibration AC voltage signal is amplified and then transmitted to the analog-to-digital converter ADC of the control module for sampling. The digital signal obtained by sampling is processed by the signal processing module to obtain the striker parameters. Refer to Figure 6 For the signal processing flow, the sampled signal is first normalized to normalize the value of the sampling result of the analog-to-digital converter ADC to the range of [0, 1] for subsequent processing. Then it is input to the low-pass filtering module to filter out the high-frequency interference signals in the signal. The calculation formula for low-pass filtering is "y(t)=y(t - 1)+alpha[x(t)-y(t - 1)]", where y(t) is the filtered signal, y(t - 1) is the previous value of the filtered signal, x(t) is the current input signal, and alpha is the filtering coefficient. The filtering coefficient is calculated from the cut-off frequency and the sampling period, where: alpha=(2*π*fc*Ts) / (2*π*fc*Ts + 1), fc is the cut-off frequency, with a value range of 70Hz to 300Hz, and Ts is the sampling period, with a range of 1kHz to 2kHz. The low-pass filtered signal is input to the striker parameter determination module of the control module to determine the striker parameters based on the filtered sampled signals.

[0058] In an alternative implementation, the control module is further configured to: Take every continuous preset number of sampled signals as a sampling group and determine the root mean square calculation value of each sampling group; Record a striker signal when the root mean square calculation value is greater than the preset value; Determine the time interval between two adjacent striker signals; The amplitude of the impact drum is determined based on the RMS calculation value, and the frequency of the impact drum is determined based on the time interval.

[0059] For details, please refer to Figure 6 The signal processing flow chart is as follows: first, each preset number of continuous sampling signals is regarded as a sampling group, for example, 10 to 30 continuous sampling signals are regarded as a sampling group, and the root mean square value V of the group of signals is calculated. RMS , compare V RMS The size between the preset value V1, if V RMS If it is >V1, it is considered to meet the characteristics of the barrel collision signal and recorded as a barrel collision signal V RMS (n). Simultaneously calculate the two adjacent collision signals V RMS (n) and V RMS The time interval between (n+1) is used to calculate the collision frequency. The collision frequency is the time interval between two adjacent collision signals, and the collision amplitude is the root mean square calculated value.

[0060] This embodiment uses the existing buzzer circuit on the washing machine to detect whether the washing drum has hit the drum, without installing additional sensors. This reduces production costs while ensuring accurate detection results of the drum hitting parameters.

[0061] The sequence of the serial numbers or introduction of the embodiments of this application is for description only and does not represent the superiority or inferiority of the embodiments.

[0062] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only exemplary. For example, the division of the units can be a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0063] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0064] In addition, in each embodiment of the present application, each functional unit can be integrated into a processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

[0065] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wirelessly (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer, or a data storage device such as a server or data center that includes one or more integrated available media. The available medium can be a magnetic medium (such as a floppy disk, hard disk, magnetic tape), an optical medium (such as a digital versatile disc (DVD)), or a semiconductor medium (such as a solid state disk (SSD)). It should be noted that the computer-readable storage medium mentioned in the embodiments of the present application can be a non-volatile storage medium, in other words, a non-transitory storage medium. It should be noted that the information (including but not limited to user device information, user personal information, etc.), data (including but not limited to data for analysis, stored data, displayed data, etc.), and signals involved in the embodiments of the present application are all authorized by the user or fully authorized by all parties, and the collection, use, and processing of relevant data need to comply with the relevant laws, regulations, and standards of relevant countries and regions. For example, the scene data of the current frame in the three-dimensional virtual scene, the device information of the client, and the scene interaction information involved in the embodiments of the present application are all obtained under sufficient authorization.

[0066] The above are only the preferred embodiments of the present application. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A dehydration control method for a washing machine, characterized in that, The dehydration control method includes: Before entering the dehydration stage, obtain clothing attribute parameters; the clothing attribute parameters include at least one of clothing weight, clothing water absorption rate, and clothing moisture content. The clothing weight is the weight of the clothing before entering the washing stage, and the clothing moisture content is the moisture content of the clothing before entering the dehydration stage; During the dehydration stage, obtain the barrel collision parameters, and determine the target dehydration speed of the washing machine according to the clothing attribute parameters and the barrel collision parameters; the barrel collision parameters include at least one of the barrel collision frequency and the barrel collision amplitude; Control the washing machine to dehydrate at the target dehydration speed.

2. The dehydration control method of the washing machine according to claim 1, characterized in that The clothing water absorption rate is characterized by the water inlet rate when the washing machine first fills with water; And / or, the clothing moisture content is characterized by the drainage rate before entering the dehydration stage at the end of the rinsing stage.

3. The dehydration control method of the washing machine according to claim 1, characterized in that The determination of the target dehydration speed of the washing machine according to the clothing attribute parameters and the barrel collision parameters includes: Input the clothing parameters and the barrel collision parameters of the washing machine into a pre-trained neural network model, and output the target dehydration speed through the neural network model.

4. The dehydration control method of the washing machine according to any one of claims 1-3, characterized in that, The barrel collision parameters are detected by a barrel collision detection circuit based on a buzzer.

5. A washing machine, characterized in that, The washing machine adopts the dehydration control method according to any one of claims 1-4.

6. The washing machine according to claim 5, wherein, The washing machine includes a barrel collision detection circuit based on a buzzer, and the barrel collision detection circuit includes: A buzzer module, the buzzer module includes a buzzer with a buzzing function, the buzzer can be directly or indirectly affected by the vibration of the washing barrel, and generates a voltage signal based on the vibration of the washing barrel; A signal transmission module, arranged between the voltage signal output end of the buzzer and the signal input end of the control module, at least used to transmit the voltage signal to the control module; A control module, electrically connected to the control end of the buzzer module, which can transmit a vibration detection signal to the control end of the buzzer module to control the buzzer module to be in a state capable of generating the voltage signal. The control module determines whether a barrel collision occurs according to the voltage signal, and generates the barrel collision parameters of the washing machine when it is determined that a barrel collision occurs.

7. The washing machine according to claim 6, wherein The signal transmission module is used to adjust the voltage signal during the transmission of the voltage signal, and the adjustment includes at least one of filtering and amplification.

8. The washing machine according to claim 6, wherein, The signal transmission module includes a DC blocking capacitor and an amplifier; The first end of the DC blocking capacitor is electrically connected to the voltage signal output end of the buzzer, and the second end of the DC blocking capacitor is electrically connected to the positive input end of the amplifier; A resistor that affects the amplification factor of the amplifier is connected to the negative input end of the amplifier, and the output end of the amplifier is electrically connected to the signal input end of the control module.

9. The washing machine according to claim 6, wherein The buzzer includes a sounding unit, the sounding unit includes a piezoelectric material, the sounding unit uses the inverse piezoelectric effect of the piezoelectric material to generate sound, and uses the direct piezoelectric effect of the piezoelectric material to generate the voltage signal under the direct or indirect vibration of the washing barrel.

10. The washing machine according to claim 6, wherein The buzzer module further includes a bias resistor and a triode. The triode and the bias resistor are connected in series in sequence along the current flow direction, and the buzzer is connected in parallel with the bias resistor; The vibration detection signal is used to control the triode to be continuously in the conducting state; When the control module controls the buzzer to achieve the buzzer function, it transmits a pulse signal to the base of the triode to make the triode conduct and disconnect periodically.

11. The washing machine according to claim 6, wherein, The control module is configured as: Sampling the voltage signal transmitted by the signal transmission module and then performing normalization processing; Filtering the interference signal in the sampled signal after normalization processing; Determining the impact cylinder parameters according to the filtered sampled signal.

12. The washing machine according to claim 11, wherein, The control module is further configured as: Taking every continuous preset number of sampled signals as a sampling group and determining the root mean square calculation value of each sampling group; Recording an impact cylinder signal when the root mean square calculation value is greater than a preset value; Determining the time interval between two adjacent impact cylinder signals; Determining the impact cylinder amplitude according to the root mean square calculation value and determining the impact cylinder frequency according to the time interval.

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