A washing control method and a washing machine

Abstract

The application discloses a kind of washing control method and washing machine, when starting, the initial clothes dirt degree is detected in washing procedure, after water is detected, the first washing water turbidity, the first setting time is based on the effect of detergent on clothes, part of dirt on clothes dissolves into water, obtain the second washing water turbidity, and the turbidity of two times is used as the judgment basis to judge the second clothes dirt degree, according to the difference between the clothes dirt degree of two times and the ratio of initial clothes dirt degree, the difficulty of clothes washing is judged, and then the execution parameter of washing procedure is modified according to the difficulty of clothes washing, for example, when the difficulty is low, the washing time is reduced, when the difficulty is large, the amount of detergent is increased, the washing time is increased, etc., the adaptability of washing procedure is improved and the washing effect can be significantly improved.

Description

Technical Field

[0001] This invention belongs to the field of washing machine technology, specifically, it relates to a washing control method and a washing machine. Background Technology

[0002] In existing technologies, detergent is typically added to washing machines in two ways: one is that the user judges the amount of laundry and the degree of soiling of the clothes and adds detergent manually based on subjective judgment, or adds detergent manually according to the recommended amount corresponding to the number of clothes indicated on the detergent label; the other way is that the washing machine estimates the degree of soiling, weight, or material of the clothes when it starts up, and then allocates an appropriate amount of detergent according to the estimated parameters, and then implements automatic dispensing.

[0003] The manual detergent dispensing method described above is highly susceptible to subjective factors, and the amount dispensed is likely to be inconsistent with the actual needs of the clothes. While the automatic dispensing method avoids the influence of subjective factors, in actual application, detergent concentrations and cleaning power vary between brands. Even with quantitative standards for detergent dispensing based on the weight, material, or degree of soiling of the clothes, the differences in detergents can still lead to discrepancies between the amount dispensed and the actual needs of the clothes. Insufficient detergent will reduce the cleanliness of the clothes, while excessive detergent will leave detergent residue, affecting the user experience. Summary of the Invention

[0004] This invention proposes a washing control method and a washing machine. When the washing program starts, the initial soiling level of the clothes is obtained once. After water enters, the turbidity of the washing water is obtained. The soiling level of the clothes is determined a second time based on the turbidity of the washing water. The washing difficulty of the clothes is determined based on the difference between the two soiling levels. Then, the execution parameters of the washing program are modified according to the washing difficulty, including but not limited to detergent dosage, washing time, etc., to improve the adaptability of the washing program and improve the washing effect.

[0005] The present invention is implemented using the following technical solutions: A washing control method is proposed, which performs the following operations after the washing program is started: Get the initial clothing soiling level; Perform the water intake process and detect the turbidity of the first wash water; After a first set time, the turbidity of the second wash water is detected, and the degree of soiling of the second garment is determined based on the turbidity of the first wash water and the turbidity of the second wash water. The difficulty of washing the clothes is determined by the difference between the degree of soiling of the second garment and the degree of soiling of the initial garment; The execution parameters of the washing program are modified based on the difficulty of washing the clothes.

[0006] Compared with existing technologies, the advantages and positive effects of this invention are as follows: The washing control method proposed in this invention detects the initial soiling level of the clothes when the washing program starts, and then executes the water intake process, during which the detergent gradually dissolves in the washing water; after water intake, the turbidity of the washing water is detected once, that is, the first turbidity of the washing water. This first turbidity of the washing water is basically the effect of the detergent dissolution on the turbidity of the water. After a first set time, based on the effect of the detergent on the clothes, some of the dirt on the clothes dissolves into the water, causing a change in the soiling level of the clothes. At this time, the second turbidity of the washing water is obtained, and the first and second turbidities of the washing water are used as a judgment benchmark to judge the soiling level of the clothes again, that is, the second soiling level of the clothes. Then, the second soiling level of the clothes is compared with the initial soiling level of the clothes. The difference in soiling level, compared to the initial soiling level of the clothes, indicates the difficulty of washing the clothes. If the soiling is not difficult to remove, the change in the difference in soiling level between the two washes relative to the initial soiling level will be more significant. Conversely, if the soiling is difficult to remove, the change in the difference in soiling level between the two washes relative to the initial soiling level will be less significant. Therefore, the ratio of the difference in soiling level between the two washes to the initial soiling level reflects the difficulty of washing the clothes. Based on this difference, the washing program's execution parameters can be modified accordingly. For example, reducing the washing time when the difficulty is low, and increasing the detergent dosage and washing time when the difficulty is high, thus improving the adaptability of the washing program and significantly improving the washing effect.

[0007] In some embodiments of the present invention, determining the second degree of soiling of the clothing based on the turbidity of the first washing water and the turbidity of the second washing water includes: The degree of soiling of the second garment is determined based on the difference between the turbidity of the second wash water and the turbidity of the first wash water; or, The second degree of soiling of the clothes is determined based on the difference between the turbidity of the second wash water and the turbidity of the first wash water, and the initial degree of soiling of the clothes.

[0008] Within the first set time period, the dirt on the clothes dissolves to varying degrees in the washing water, causing a change in the turbidity of the washing water. The change in turbidity between the first and second time periods reflects the degree to which the dirt dissolves in the water. A large change in turbidity indicates that more dirt has dissolved in the water, and the dirtiness of the clothes will decrease more after the first set time period. A small change in turbidity indicates that less dirt has dissolved in the water, and the dirtiness of the clothes will decrease less after the first set time period. At this point, combined with the initial degree of dirtiness of the clothes, it can be determined whether the small change in the turbidity of the washing water is due to the fact that the clothes were not very dirty to begin with, or because the dirt on the clothes was difficult to wash out. Thus, the second degree of dirtiness of the clothes can be determined.

[0009] In some embodiments of the present invention, determining the second degree of soiling of the clothing based on the turbidity of the first washing water and the turbidity of the second washing water includes: Acquire clothing images; A reference image is obtained by correcting the image of the clothing using the turbidity of the first wash water and / or the turbidity of the second wash water; The degree of soiling of the second garment is determined based on the reference image.

[0010] Within a first set time period, the dirt on the clothes dissolves to varying degrees in the washing water, and the turbidity of the washing water changes, thus changing the degree of dirt on the clothes. At this time, an image of the clothes is acquired, which contains turbidity information. After correcting the image of the clothes using the first and / or second washing water turbidity, the resulting reference image contains only the information of the clothes. Based on this, the degree of dirt on the clothes and the degree of dirt dissolution can be determined, that is, the degree of dirt on the second clothes can be calculated.

[0011] In some embodiments of the present invention, the method further includes, before performing the water intake process: Determine the weight and material of the clothing; The initial detergent dosage is determined based on the initial degree of soiling of the clothing, the weight of the clothing, and the material of the clothing.

[0012] The initial amount of detergent is determined by comprehensively considering the degree of soiling, weight, and material of the clothes. This initial amount is lower than the standard amount to avoid detergent residue that is difficult to rinse out due to excessive dosage. After judging the washing difficulty based on the degree of soiling before and after washing, if the washing difficulty is high, the amount of detergent is increased to ensure cleaning effect while avoiding excessive dosage.

[0013] In some embodiments of the present invention, the execution parameters include: detergent dosage, soaking time, washing time, number of washes and / or number of rinses.

[0014] The present invention also proposes a washing machine configured with a washing program, including: A soiling sensor is used to obtain the initial soiling level of the clothes after the washing program starts; A turbidity sensor is used to detect the turbidity of the first wash water during the water intake process of the washing program; and to detect the turbidity of the second wash water after a first set time. The garment washing difficulty judgment unit is used to determine the second garment soiling degree based on the first washing water turbidity and the second washing water turbidity, and to judge the garment washing difficulty based on the difference between the second garment soiling degree and the initial garment soiling degree. The washing control unit is used to modify the execution parameters of the washing program based on the difficulty of washing the clothes.

[0015] In some embodiments of the present invention, the garment washing difficulty determination unit is configured to, when determining the second garment soiling degree based on the first washing water turbidity and the second washing water turbidity, as follows: The degree of soiling of the second garment is determined based on the difference between the turbidity of the second wash water and the turbidity of the first wash water; or, The second degree of soiling of the clothes is determined based on the difference between the turbidity of the second wash water and the turbidity of the first wash water, and the initial degree of soiling of the clothes.

[0016] In some embodiments of the present invention, the garment washing difficulty determination unit is configured to, when determining the second garment soiling degree based on the first washing water turbidity, as follows: Acquire clothing images; A reference image is obtained by correcting the image of the clothing using the turbidity of the first wash water and / or the turbidity of the second wash water; The degree of soiling of the second garment is determined based on the reference image.

[0017] In some embodiments of the present invention, the washing machine further includes: Clothing weight sensor, used to obtain the weight of clothing; Material sensor, used to obtain the material of clothing; A detergent dispensing unit is used to determine the initial detergent dosage based on the initial degree of soiling of the clothes, the weight of the clothes, and the material of the clothes.

[0018] In some embodiments of the present invention, the execution parameters include: detergent dosage, soaking time, washing time, number of washes and / or number of rinses.

[0019] Other features and advantages of the present invention will become clearer after reading the detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the control flow of the washing control method proposed in this invention; Figure 2 This is a schematic diagram of the control flow of the washing control method given in Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the control flow of the washing control method given in Embodiment 2 of the present invention; Figure 4 This is a schematic diagram of the control flow of the washing control method given in Embodiment 3 of the present invention; Figure 5 This is a schematic diagram of the functional structure of a washing machine as shown in Embodiment 4 of the present invention. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0025] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0026] The present invention aims to provide a washing control method that estimates the washing difficulty of clothes based on changes in the degree of soiling, and modifies the execution parameters of the washing program according to the washing difficulty, in order to improve the adaptability of the washing program and improve the washing effect.

[0027] Specifically, such as Figure 1 As shown, the washing control method proposed in this invention includes: S1: Get the initial clothing dirtiness level.

[0028] After clothes are put into the washing machine drum and the washing program is started, a whiteness meter is used to detect the degree of dirtiness of the clothes, or an image of the clothes is acquired, and the degree of dirtiness is obtained based on the analysis of the image.

[0029] In practical applications, after the washing program starts, the weight of the clothes is obtained through fuzzy control, pressure sensors, and other means, and information such as the material of the clothes is obtained through fuzzy control or image processing.

[0030] S2: Execute the water intake process and detect the turbidity of the first wash water.

[0031] A washing program includes at least a water intake process, a washing process, a rinsing process, and a spin-drying process. Depending on actual needs, it may also include a soaking process, a heating process, etc.

[0032] After obtaining the initial degree of soiling of the clothes, the water intake process is initiated. During the water intake, the detergent dissolves in the water and enters the inner drum with the water flow. The inner drum or impeller may rotate during the water intake process to promote the penetration of the detergent-dissolved wash water into the clothes.

[0033] After the water intake process is completed, the turbidity sensor is activated to obtain the first turbidity of the washing water, or an image of the washing water is obtained, and the first turbidity of the washing water is obtained based on the analysis of the washing water image.

[0034] The turbidity of the first wash water basically reflects the effect of detergent on the turbidity of the water after it dissolves.

[0035] S3: After the first set time, detect the turbidity of the second washing water, and determine the degree of soiling of the second garment based on the turbidity of the first and second washing water.

[0036] The first time limit is defined as follows: within this time period, the dirt on the clothes can be partially dissolved in the water by the action of the detergent, and the degree of dissolution depends on how difficult it is for the dirt to be dissolved.

[0037] After some dirt dissolves in water, the degree of soiling on clothing changes. The portion of dirt dissolved in water affects the turbidity of the washing water. Based on this fact, this invention obtains the turbidity of the washing water again after a first set time, i.e., the second washing water turbidity. Normally, the change in washing water turbidity reflects the amount of dirt on clothing dissolved in the water, and the rate of change in washing water turbidity reflects the rate at which dirt on clothing dissolves in the water. Based on this, this invention calculates the amount and / or rate at which dirt on clothing dissolves in the washing water based on the first and second washing water turbidities, and thus can calculate the degree of soiling of the clothing after the first set time, i.e., the second degree of soiling of the clothing.

[0038] S4: Determine the difficulty of washing clothes based on the ratio of the difference between the second garment's soiling level and the initial garment's soiling level to the initial garment's soiling level.

[0039] Normally, when a large amount of dirt dissolves in the washing water within a first set time, it means that the dirt is easy to clean. However, it is also possible that if the clothes are too dirty or there are multiple stains, only the easily removable dirt will dissolve. Therefore, this invention further judges the washing difficulty of the clothes based on the difference between the second degree of dirtiness and the initial degree of dirtiness, combined with the initial degree of dirtiness. If the difference between the two degrees of dirtiness is large relative to the change in the initial degree of dirtiness, it indicates that the clothes are easy to wash. Conversely, if the difference between the two degrees of dirtiness is small relative to the change in the initial degree of dirtiness, it indicates that the clothes are easy to wash.

[0040] S5: Modify the execution parameters of the washing program based on the difficulty of washing clothes.

[0041] When the difficulty of washing clothes exceeds the preset difficulty value, the execution parameters of the washing program can be modified by extending the washing time, adding more detergent, and increasing the soaking process to improve the cleaning effect.

[0042] When the difficulty of washing clothes is lower than the preset difficulty value, the execution parameters of the washing program are modified by reducing the washing time and the washing speed, so as to ensure the cleaning effect while saving washing energy.

[0043] The aforementioned preset difficulty consideration values ​​are either experience-based or statistical values.

[0044] The washing control method proposed in this invention detects the initial soiling level of the clothes when the washing program starts, and then executes the water intake process, during which the detergent gradually dissolves into the washing water. After water intake, the turbidity of the washing water is detected once, i.e., the first washing water turbidity. This first washing water turbidity is basically the effect of detergent dissolution on the turbidity of the water. After a first set time, based on the effect of the detergent on the clothes, some of the dirt on the clothes dissolves into the water, causing a change in the soiling level of the clothes. At this time, the second washing water turbidity is obtained, and the first and second washing water turbidities are used as a judgment benchmark to judge the soiling level of the clothes again, i.e., the second clothing soiling level. Then, the difference between the second clothing soiling level and the initial clothing soiling level is compared, and the result is determined based on the difference. The ratio of the initial soiling level to the final soiling level of the clothes indicates the difficulty of washing them. If the soiling is relatively easy to remove, the difference in soiling level between two washes will be more noticeable than the initial soiling level. Conversely, if the soiling is difficult to remove, the difference in soiling level will be less noticeable. Therefore, the ratio of the initial soiling level to the final soiling level reflects the difficulty of washing the clothes. Based on this difference, the washing program's parameters can be adjusted accordingly. For example, reducing the washing time when the difficulty is low, and increasing the detergent dosage and washing time when the difficulty is high, thus improving the adaptability of the washing program and significantly enhancing the washing effect.

[0045] The washing difficulty of clothes mentioned above in this invention is a ratio calculated based on the difference in the degree of soiling of the clothes and the initial degree of soiling of the clothes. The difficulty level or difficulty coefficient corresponding to this ratio is data obtained from numerous experimental verifications.

[0046] The following specific embodiments illustrate the application of the washing control method proposed in this invention in detail. Example 1

[0047] like Figure 2 As shown, the washing control method provided in this embodiment includes: S21: Obtain the initial clothing soiling level.

[0048] After clothes are put into the washing machine drum and the washing program is started, a whiteness meter is used to detect the degree of dirtiness of the clothes, or an image of the clothes is acquired, and the degree of dirtiness is obtained based on the analysis of the image.

[0049] In practical applications, after the washing program starts, the weight of the clothes is obtained through fuzzy control, pressure sensors, and other means, and information such as the material of the clothes is obtained through fuzzy control or image processing.

[0050] S22: Execute the water intake process and detect the turbidity of the first wash water.

[0051] A washing program includes at least a water intake process, a washing process, a rinsing process, and a spin-drying process. Depending on actual needs, it may also include a soaking process, a heating process, etc.

[0052] After obtaining the initial degree of soiling of the clothes, the water intake process is initiated. During the water intake, the detergent dissolves in the water and enters the inner drum with the water flow. The inner drum or impeller may rotate during the water intake process to promote the penetration of the detergent-dissolved wash water into the clothes.

[0053] After the water intake process is completed, the turbidity sensor is activated to obtain the first turbidity of the washing water, or an image of the washing water is obtained, and the first turbidity of the washing water is obtained based on the analysis of the washing water image.

[0054] The turbidity of the first wash water basically reflects the effect of detergent on the turbidity of the water after it dissolves.

[0055] S23: After the first set time, detect the turbidity of the second washing water.

[0056] The first time limit is defined as follows: within this time period, the dirt on the clothes can be partially dissolved in the water by the action of the detergent, and the degree of dissolution depends on how difficult it is for the dirt to be dissolved.

[0057] After some dirt dissolves in water, the degree of dirtiness of the clothes will change. The dirt dissolved in the water will affect the turbidity of the washing water. Based on this fact, the present invention obtains the turbidity of the washing water again after a first set time, that is, the second turbidity of the washing water.

[0058] S24: Determine the degree of soiling of the second garment based on the difference between the turbidity of the second washing water and the turbidity of the first washing water, or determine the degree of soiling of the second garment based on the difference between the turbidity of the second washing water and the turbidity of the first washing water, and the initial degree of soiling of the garment.

[0059] Normally, changes in the turbidity of the washing water reflect the amount of dirt on the clothes that has dissolved in the water, while the rate of change in the turbidity of the washing water reflects the rate at which the dirt on the clothes dissolves in the water. Based on this, the amount and / or rate at which dirt on the clothes dissolves in the washing water can be calculated based on the first and second turbidity of the washing water. In turn, the degree of soiling of the clothes after a first set time can be calculated, which is the second degree of soiling of the clothes.

[0060] Specifically, in this embodiment, within a first set time period, the dirt on the clothes dissolves to varying degrees in the washing water, causing a change in the turbidity of the washing water. The change in turbidity between the two periods reflects the degree to which the dirt dissolves in the water. A large change in turbidity indicates that more dirt dissolves in the water, and the dirtiness of the clothes decreases more after the first set time period. A small change in turbidity indicates that less dirt dissolves in the water, and the dirtiness of the clothes decreases less after the first set time period. At this point, combined with the initial degree of dirtiness of the clothes, it can be comprehensively judged whether the small change in the turbidity of the washing water is due to the fact that the degree of dirtiness of the clothes is not high to begin with, or because the dirtiness of the clothes is difficult to wash, and thus the second degree of dirtiness of the clothes can be determined.

[0061] S25: The difficulty of washing clothes is determined by the ratio of the difference between the second garment's soiling level and the initial garment's soiling level to the initial garment's soiling level.

[0062] Normally, when a large amount of dirt dissolves in the washing water within a first set time, it means that the dirt is easy to clean. However, it is also possible that if the clothes are too dirty or there are multiple stains, only the easily removable dirt will dissolve. Therefore, this invention further judges the washing difficulty of the clothes based on the difference between the second degree of dirtiness and the initial degree of dirtiness, combined with the initial degree of dirtiness. If the difference between the two degrees of dirtiness is large relative to the change in the initial degree of dirtiness, it indicates that the clothes are easy to wash. Conversely, if the difference between the two degrees of dirtiness is small relative to the change in the initial degree of dirtiness, it indicates that the clothes are easy to wash.

[0063] S26: Modify the execution parameters of the washing program based on the difficulty of washing clothes.

[0064] When the difficulty of washing clothes exceeds the preset difficulty value, the execution parameters of the washing program can be modified by extending the washing time, adding more detergent, and increasing the soaking process to improve the cleaning effect.

[0065] When the difficulty of washing clothes is lower than the preset difficulty value, the execution parameters of the washing program are modified by reducing the washing time and the washing speed, so as to ensure the cleaning effect while saving washing energy.

[0066] The aforementioned preset difficulty consideration values ​​are either experience-based or statistical values. Example 2

[0067] like Figure 3 As shown, the washing control method provided in this embodiment includes: S31: Get the initial clothing dirtiness level.

[0068] After clothes are put into the washing machine drum and the washing program is started, a whiteness meter is used to detect the degree of dirtiness of the clothes, or an image of the clothes is acquired, and the degree of dirtiness is obtained based on the analysis of the image.

[0069] In practical applications, after the washing program starts, the weight of the clothes is obtained through fuzzy control, pressure sensors, and other means, and information such as the material of the clothes is obtained through fuzzy control or image processing.

[0070] S32: Execute the water intake process and detect the turbidity of the first wash water.

[0071] A washing program includes at least a water intake process, a washing process, a rinsing process, and a spin-drying process. Depending on actual needs, it may also include a soaking process, a heating process, etc.

[0072] After obtaining the initial degree of soiling of the clothes, the water intake process is initiated. During the water intake, the detergent dissolves in the water and enters the inner drum with the water flow. The inner drum or impeller may rotate during the water intake process to promote the penetration of the detergent-dissolved wash water into the clothes.

[0073] After the water intake process is completed, the turbidity sensor is activated to obtain the first turbidity of the washing water, or an image of the washing water is obtained, and the first turbidity of the washing water is obtained based on the analysis of the washing water image.

[0074] The turbidity of the first wash water basically reflects the effect of detergent on the turbidity of the water after it dissolves.

[0075] S33: After the first set time, detect the turbidity of the second wash water.

[0076] The first time limit is defined as follows: within this time period, the dirt on the clothes can be partially dissolved in the water by the action of the detergent, and the degree of dissolution depends on how difficult it is for the dirt to be dissolved.

[0077] After some dirt dissolves in water, the degree of dirtiness of the clothes will change. The dirt dissolved in the water will affect the turbidity of the washing water. Based on this fact, the present invention obtains the turbidity of the washing water again after a first set time, that is, the second turbidity of the washing water.

[0078] S34: Get the image of the clothing.

[0079] Normally, changes in the turbidity of the washing water reflect the amount of dirt on the clothes that has dissolved in the water, while the rate of change in the turbidity of the washing water reflects the rate at which the dirt on the clothes dissolves in the water. Based on this, the amount and / or rate at which dirt on the clothes dissolves in the washing water can be calculated based on the first and second turbidity of the washing water. In turn, the degree of soiling of the clothes after a first set time can be calculated, which is the second degree of soiling of the clothes.

[0080] Specifically, in this embodiment, within a first set time period, the dirt on the clothes dissolves to varying degrees in the washing water, and the turbidity of the washing water changes, as does the degree of dirt on the clothes. At this time, an image of the clothes is acquired, which contains turbidity information and clothing information.

[0081] S35: Correct the garment image using the turbidity of the first wash water and / or the turbidity of the second wash water to obtain a reference image.

[0082] When the turbidity of the second wash water does not change significantly relative to the turbidity of the first wash water, the turbidity of the first wash water or the turbidity of the second wash water is used to correct the clothing image. That is, the influence of turbidity is removed from the clothing image, and only a reference image containing clothing information is included. For example, the clothing image can be converted into a grayscale image, and the grayscale portion caused by the turbidity of the first wash water or the turbidity of the second wash water is subtracted.

[0083] When the turbidity of the second wash water changes significantly relative to the turbidity of the first wash water, the turbidity of the second wash water is used to correct the garment image, removing the influence of turbidity from the garment image and including only a reference image of the garment information.

[0084] S36: Determine the soiling level of the second garment based on the reference image.

[0085] After correcting the garment image using the turbidity of the first and / or second washing water, the resulting reference image contains only garment information. Based on this, the degree of soiling of the garment and the degree of soil dissolution can be determined, which means the degree of soiling of the second garment can be calculated.

[0086] S37: The difficulty of washing clothes is determined by the ratio of the difference between the second garment's soiling level and the initial garment's soiling level to the initial garment's soiling level.

[0087] Normally, when a large amount of dirt dissolves in the washing water within a first set time, it means that the dirt is easy to clean. However, it is also possible that if the clothes are too dirty or there are multiple stains, only the easily removable dirt will dissolve. Therefore, this invention further judges the washing difficulty of the clothes based on the difference between the second degree of dirtiness and the initial degree of dirtiness, combined with the initial degree of dirtiness. If the difference between the two degrees of dirtiness is large relative to the change in the initial degree of dirtiness, it indicates that the clothes are easy to wash. Conversely, if the difference between the two degrees of dirtiness is small relative to the change in the initial degree of dirtiness, it indicates that the clothes are easy to wash.

[0088] S38: Modify the execution parameters of the washing program based on the difficulty of washing clothes.

[0089] When the difficulty of washing clothes exceeds the preset difficulty value, the execution parameters of the washing program can be modified by extending the washing time, adding more detergent, and increasing the soaking process to improve the cleaning effect.

[0090] When the difficulty of washing clothes is lower than the preset difficulty value, the execution parameters of the washing program are modified by reducing the washing time and the washing speed, so as to ensure the cleaning effect while saving washing energy.

[0091] The aforementioned preset difficulty consideration values ​​are either experience-based or statistical values. Example 3

[0092] like Figure 4 As shown, the washing control method provided in this embodiment includes: S41: Get the initial clothing soiling level.

[0093] After clothes are put into the washing machine drum and the washing program is started, a whiteness meter is used to detect the degree of dirtiness of the clothes, or an image of the clothes is acquired, and the degree of dirtiness is obtained based on the analysis of the image.

[0094] In practical applications, after the washing program starts, the weight of the clothes is obtained through fuzzy control, pressure sensors, and other means, and information such as the material of the clothes is obtained through fuzzy control or image processing.

[0095] S42: Determine the weight and material of the clothing, and determine the initial detergent dosage based on the initial degree of soiling, weight, and material of the clothing.

[0096] The objective function is constructed to obtain the initial detergent dosage; where is the initial detergent dosage, a1, a2, and a3 are the detergent dosage weighting coefficients, and , , and represent the correspondence between the degree of soiling of the clothes, the weight of the clothes, and the material of the clothes and the amount of detergent, respectively.

[0097] S43: Execute the water intake process and detect the turbidity of the first wash water.

[0098] A washing program includes at least a water intake process, a washing process, a rinsing process, and a spin-drying process. Depending on actual needs, it may also include a soaking process, a heating process, etc.

[0099] After obtaining the initial degree of soiling of the clothes, the water intake process is initiated. During the water intake, the detergent dissolves in the water and enters the inner drum with the water flow. The inner drum or impeller may rotate during the water intake process to promote the penetration of the detergent-dissolved wash water into the clothes.

[0100] After the water intake process is completed, the turbidity sensor is activated to obtain the first turbidity of the washing water, or an image of the washing water is obtained, and the first turbidity of the washing water is obtained based on the analysis of the washing water image.

[0101] The turbidity of the first wash water basically reflects the effect of detergent on the turbidity of the water after it dissolves.

[0102] S44: After the first set time, detect the turbidity of the second washing water, and determine the degree of soiling of the second garment based on the turbidity of the first washing water and the turbidity of the second washing water.

[0103] The first time limit is defined as follows: within this time period, the dirt on the clothes can be partially dissolved in the water by the action of the detergent, and the degree of dissolution depends on how difficult it is for the dirt to be dissolved.

[0104] After some dirt dissolves in water, the degree of soiling on clothing changes. The portion of dirt dissolved in water affects the turbidity of the washing water. Based on this fact, this invention obtains the turbidity of the washing water again after a first set time, i.e., the second washing water turbidity. Normally, the change in washing water turbidity reflects the amount of dirt on clothing dissolved in the water, and the rate of change in washing water turbidity reflects the rate at which dirt on clothing dissolves in the water. Based on this, this invention calculates the amount and / or rate at which dirt on clothing dissolves in the washing water based on the first and second washing water turbidities, and thus can calculate the degree of soiling of the clothing after the first set time, i.e., the second degree of soiling of the clothing.

[0105] S45: The difficulty of washing clothes is determined by the ratio of the difference between the second garment's soiling level and the initial garment's soiling level to the initial garment's soiling level.

[0106] Normally, when a large amount of dirt dissolves in the washing water within a first set time, it means that the dirt is easy to clean. However, it is also possible that if the clothes are too dirty or there are multiple stains, only the easily removable dirt will dissolve. Therefore, this invention further judges the washing difficulty of the clothes based on the difference between the second degree of dirtiness and the initial degree of dirtiness, combined with the initial degree of dirtiness. If the difference between the two degrees of dirtiness is large relative to the change in the initial degree of dirtiness, it indicates that the clothes are easy to wash. Conversely, if the difference between the two degrees of dirtiness is small relative to the change in the initial degree of dirtiness, it indicates that the clothes are easy to wash.

[0107] S46: Determine whether to increase the amount of detergent based on the difficulty of washing the clothes.

[0108] When the difficulty of washing clothes exceeds the preset difficulty value, add more detergent. You can add more detergent by adding the set amount, or you can divide the difficulty of washing clothes into levels and add more detergent according to the specified amount for each level.

[0109] Of course, this embodiment is not limited to improving the washing effect by simply adding more detergent. The execution parameters of the washing program can also be modified by increasing the soaking process to achieve the same effect.

[0110] When the difficulty of washing clothes is lower than the preset difficulty value, the execution parameters of the washing program are modified by reducing the washing time and the washing speed, so as to ensure the cleaning effect while saving washing energy.

[0111] The aforementioned preset difficulty consideration values ​​are either experience-based or statistical values.

[0112] The above-mentioned execution parameters include, but are not limited to, the amount of detergent added, and may also include parameters that can directly or indirectly affect the washing effect, such as soaking time, washing time, number of washes and / or number of rinses.

[0113] This embodiment estimates the water level and detergent dosage based on the weight, material, and degree of soiling of the clothing. The estimated detergent dosage can be a lower amount than the standard dosage. After the first set time has elapsed, the turbidity of the washing water is measured. The influence of turbidity is removed to obtain the current degree of soiling of the clothing. The difficulty of washing the soil is judged based on the difference in soiling degree before and after. The subsequent treatment is determined based on the difficulty of washing, which improves the accuracy of detergent dosage and improves the washing effect. Example 4

[0114] like Figure 5 As shown, this embodiment proposes a washing machine to support the execution of the washing control method given in the above embodiments. The washing machine is configured with a washing program, including: Soil sensor 51 is used to obtain the initial soiling level of the clothes after the washing program is started.

[0115] The turbidity sensor 52 is used to detect the turbidity of the first wash water during the water intake process of the washing program, and to detect the turbidity of the second wash water after a first set time.

[0116] The garment washing difficulty judgment unit 53 is used to determine the degree of soiling of the second garment based on the turbidity of the first washing water and the turbidity of the second washing water, and to judge the garment washing difficulty based on the difference between the degree of soiling of the second garment and the initial degree of soiling of the garment.

[0117] The washing control unit 54 is used to modify the execution parameters of the washing program based on the difficulty of washing the clothes.

[0118] In some embodiments of the present invention, when determining the second degree of soiling of the clothes based on the first and second washing water turbidity, the clothes washing difficulty determination unit 53 is configured to: The degree of soiling of the second garment is determined based on the difference between the turbidity of the second wash water and the turbidity of the first wash water; or, The second degree of soiling of the clothes is determined based on the difference between the turbidity of the second wash water and the turbidity of the first wash water, as well as the initial degree of soiling of the clothes.

[0119] In some embodiments of the present invention, when determining the second degree of soiling of the clothes based on the first turbidity of the washing water, the clothes washing difficulty determination unit 53 is configured to: Acquire clothing images; A reference image is obtained by correcting the garment image using the turbidity of the first wash water and / or the turbidity of the second wash water; The degree of soiling of the second garment is determined based on the reference image.

[0120] In some embodiments of the present invention, the washing machine further includes: The garment weight sensor 55 is used to obtain the weight of the garment.

[0121] Material sensor 56 is used to obtain the material of clothing.

[0122] The detergent dispensing unit 57 is used to determine the initial amount of detergent to be dispensed based on the initial degree of soiling of the clothes, the weight of the clothes, and the material of the clothes.

[0123] In some embodiments of the present invention, the execution parameters include: detergent dosage, soaking time, washing time, number of washes and / or number of rinses.

[0124] It should be noted that, in the specific implementation process, the above-mentioned control part can be implemented by a hardware processor executing computer-executable instructions in software form stored in memory, which will not be elaborated here. The programs corresponding to the actions performed by the above control circuit can all be stored in the computer-readable storage medium of the system in software form, so that the processor can call and execute the operations corresponding to the above modules.

[0125] The computer-readable storage media mentioned above may include volatile memory, such as random access memory; may also include non-volatile memory, such as read-only memory, flash memory, hard disk or solid-state drive; and may also include combinations of the above types of memory.

[0126] The term "processor" as mentioned above can also refer to a collective of multiple processing elements. For example, a processor can be a central processing unit (CPU), or other general-purpose processors, digital signal processors, application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor, and it can also be a special-purpose processor.

[0127] It should be noted that the above description is not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A washing control method, characterized in that, Perform the following operations after the washing program starts: Get the initial clothing soiling level; Water is introduced and the turbidity of the first wash water is measured; the turbidity of the first wash water reflects the effect of detergent dissolving in water on the turbidity of the water; After a first set time, the turbidity of the second wash water is detected, and the degree of soiling of the second garment is determined based on the turbidity of the first wash water and the turbidity of the second wash water; the first set time is limited to the period during which the dirt on the garment can be partially dissolved in the water by the action of the detergent, and the degree of dissolution depends on the ease with which the dirt is dissolved; Determining the second degree of soiling of clothing based on the first and second wash water turbidity includes: calculating the amount and / or rate at which dirt on clothing dissolves in the wash water based on the first and second wash water turbidity. The difficulty of washing clothes is determined by the ratio of the difference between the second garment's degree of dirtiness and the initial garment's degree of dirtiness to the initial garment's degree of dirtiness. The execution parameters of the washing program are modified based on the difficulty of washing the clothes.

2. The washing control method according to claim 1, characterized in that, Determining the soiling level of the second garment based on the turbidity of the first and second wash water includes: The degree of soiling of the second garment is determined based on the difference between the turbidity of the second wash water and the turbidity of the first wash water; or, The second degree of soiling of the clothes is determined based on the difference between the turbidity of the second wash water and the turbidity of the first wash water, and the initial degree of soiling of the clothes.

3. The washing control method according to claim 1, characterized in that, Determining the soiling level of the second garment based on the turbidity of the first and second wash water includes: Acquire clothing images; A reference image is obtained by correcting the image of the clothing using the turbidity of the first wash water and / or the turbidity of the second wash water; The degree of soiling of the second garment is determined based on the reference image.

4. The washing control method according to claim 1, characterized in that, Before water ingress, the method further includes: Determine the weight and material of the clothing; The initial detergent dosage is determined based on the initial degree of soiling of the clothing, the weight of the clothing, and the material of the clothing.

5. The washing control method according to claim 1, characterized in that, The execution parameters include: detergent dosage, soaking time, washing time, number of washes and / or number of rinses.

6. A washing machine equipped with a washing program, characterized in that, include: A soiling sensor is used to obtain the initial soiling level of the clothes after the washing program starts; A turbidity sensor is used to detect the turbidity of the first wash water after it enters the system. And after a first set time, the turbidity of the second wash water is detected; the turbidity of the first wash water reflects the effect of the detergent on the turbidity of the water after dissolving in the water; the first set time is defined as: within this time period, the dirt on the clothes can be partially dissolved in the water based on the action of the detergent, and the degree of dissolution depends on the ease with which the dirt is dissolved; The garment washing difficulty judgment unit is used to determine the second garment soiling degree based on the first washing water turbidity and the second washing water turbidity, and to judge the garment washing difficulty based on the ratio of the difference between the second garment soiling degree and the initial garment soiling degree to the initial garment soiling degree. Determining the second degree of soiling of clothing based on the first and second wash water turbidity includes: calculating the amount and / or rate at which dirt on clothing dissolves in the wash water based on the first and second wash water turbidity. The washing control unit is used to modify the execution parameters of the washing program based on the difficulty of washing the clothes.

7. The washing machine according to claim 6, characterized in that, When determining the degree of soiling of the second garment based on the turbidity of the first and second washing waters, the garment washing difficulty judgment unit is configured as follows: The degree of soiling of the second garment is determined based on the difference between the turbidity of the second wash water and the turbidity of the first wash water; or, The second degree of soiling of the clothes is determined based on the difference between the turbidity of the second wash water and the turbidity of the first wash water, and the initial degree of soiling of the clothes.

8. The washing machine according to claim 6, characterized in that, When determining the degree of soiling of the second garment based on the turbidity of the first and second washing waters, the garment washing difficulty judgment unit is configured as follows: Acquire clothing images; A reference image is obtained by correcting the image of the clothing using the turbidity of the first wash water and / or the turbidity of the second wash water; The degree of soiling of the second garment is determined based on the reference image.

9. The washing machine according to claim 6, characterized in that, The washing machine also includes: Clothing weight sensor, used to obtain the weight of clothing; Material sensor, used to obtain the material of clothing; A detergent dispensing unit is used to determine the initial detergent dosage based on the initial degree of soiling of the clothes, the weight of the clothes, and the material of the clothes.

10. The washing machine according to claim 6, characterized in that, The execution parameters include: detergent dosage, soaking time, washing time, number of washes and / or number of rinses.

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