Washing machine control method and pulsator washing machine

Abstract

The invention discloses a washing machine control method and a pulsator washing machine, an inner barrel is controlled to rotate before a dehydration process is started, identification data of an RFID identification unit are obtained during rotation, the identification data are analyzed to obtain the number of washed objects identified in each detection area of the inner barrel and the material information of the washed objects, and the number of the washed objects and the material information of the washed objects are obtained. The weight condition in each detection area is calculated according to the number of washings and washings material information, so that the weight distribution condition in the barrel is obtained, whether the eccentricity condition exists in the barrel or not is judged according to the weight distribution condition, when the eccentricity condition exists, the eccentricity correction process is executed, the weight balance in the barrel is achieved, and then the dewatering process is started. The accident that the inner barrel collides with the box body due to the eccentric condition is avoided, so that the dewatering process is smoothly executed, the washing machine is protected from being collided, and the use experience of a user is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of washing machines, and specifically, relates to a washing machine control method and a pulsator washing machine. Background Art

[0002] After the drainage process of the pulsator washing machine ends, the washed objects are unevenly piled up at the bottom of the tub. When the local piling is serious, it is easy to collide with the cabinet due to eccentricity after the dehydration process starts, and in severe cases, the body of the washing machine will be displaced.

[0003] In order to avoid the accident of colliding with the cabinet when the dehydration process starts, a collision rod is installed between the inner tub and the cabinet of the existing pulsator washing machine. When the inner tub collides with the collision rod due to eccentricity, the dehydration process is immediately controlled to stop, and then the eccentricity problem is solved by other means. Although this method avoids the situation of colliding with the cabinet, it reduces the user experience. Summary of the Invention

[0004] The purpose of the present invention is to provide a washing machine control method and a pulsator washing machine. Before the dehydration process starts, the weight distribution of the washed objects in the inner tub is judged by RFID identification technology, and the eccentricity situation is judged according to the weight distribution. When it is judged that there is an eccentricity situation, means such as pulsator agitation and water inlet rebalancing are used to make the weight distribution in the tub balanced, and then the dehydration process is started, avoiding the occurrence of the situation of colliding with the cabinet due to eccentricity and improving the user experience.

[0005] The present invention is implemented by the following technical solutions: A washing machine control method is proposed, which is executed before the dehydration process of the washing machine starts, and includes: Controlling the inner tub to rotate; Obtaining the identification data of the RFID identification unit during the rotation of the inner tub; the RFID identification unit is installed above the inner tub; Analyzing the identification data to obtain the number of washed objects identified in each detection area and the information of the material of the washed objects; Judging the weight distribution of the washed objects in the tub based on the number of washed objects and the information of the material of the washed objects, and judging whether there is an eccentricity situation according to the weight distribution in the tub; When it is judged that there is an eccentricity situation, execute the eccentricity correction process.

[0006] Compared with the prior art, the advantages and positive effects of the present invention are as follows: The washing machine control method proposed by the present invention controls the inner tub to rotate before the dehydration process starts. During the rotation, the recognition data obtained by the RFID recognition unit for recognizing the RFID tags of the laundry is acquired. The recognition data is analyzed to obtain the number of laundry items recognized in each detection area of the inner tub and the laundry material information. The weight situation in each detection area is calculated based on the number of laundry items and the laundry material information, so as to know the weight distribution situation in the tub. Whether there is an eccentricity situation in the tub is judged according to the weight distribution situation. When there is an eccentricity situation, an eccentricity correction process is executed to make the weight in the tub balanced. Then the dehydration process is started, avoiding accidents such as the inner tub hitting the cabinet due to the eccentricity situation, enabling the dehydration process to be smoothly executed, protecting the washing machine from being hit and improving the user experience.

[0007] In some embodiments of the present invention, the method further includes: Determine the unit detection time of each detection area according to the number of detection areas and the rotation speed of the inner tub; then, Analyzing the recognition data to obtain the number of laundry items recognized in each detection area and the laundry material information includes: Analyze the recognition data within the unit detection time to obtain the number of laundry items recognized in each detection area and the laundry material information.

[0008] According to the rotation speed of the inner tub, the time required for the inner tub to rotate one circle can be deduced. Furthermore, according to the number of detection areas, the unit detection time that can be allocated to each detection area can be calculated. Then, when analyzing the recognition data, the recognition data within each unit detection time reflects the laundry data in the corresponding detection area, and thus the number of laundry items and the laundry material in each detection area can be known. According to the laundry material, the water absorption rate of each piece of laundry can be determined, and thus the weight of the laundry in each detection area can be calculated. According to the weights of the laundry in all detection areas, the weight distribution situation in the tub can be known. In the present invention, the rotation speed of the inner tub is adjustable, and the number of detection areas can be adjusted according to the actual application scenario. Therefore, based on the above method, the judgment accuracy of the washing machine for the weight distribution in the tub can be flexibly adjusted without other hardware adjustments and supports.

[0009] In some embodiments of the present invention, before analyzing the recognition data to obtain the number of laundry items recognized in each detection area and the laundry material information, the method further includes: determining the number of detection areas according to the type of washing process.

[0010] The type of the laundry can be determined according to the type of the washing process selected by the user. Different types of laundry have different effects on causing eccentricity in the inner tub. By dividing the number of detection areas according to the type of laundry, the difficulty of judgment can be dynamically adjusted. For example, when the laundry is a large spring or autumn coat or a cotton-padded jacket, the volume of the laundry is large and the area it occupies in the tub is also large, so the number of detection areas can be relatively small. If the laundry is small summer clothes or underwear, etc., the volume of the laundry is small and the area it occupies in the tub is small, and the possibility of piling up in one position is high, so the number of detection areas needs to be relatively large. Dynamically adjusting the number of detection areas according to the type of washing process can achieve a dynamic balance between the detection complexity and the detection accuracy.

[0011] In some embodiments of the present invention, before parsing the recognition data to obtain the number of laundry items recognized in each detection area and the laundry material information, the method further includes: determining the number of detection areas based on the laundry material information.

[0012] After parsing the recognition data to obtain the laundry material information, determine the water absorption rate of the laundry according to the laundry material information. Different materials of laundry have different water absorption conditions and different effects on causing eccentricity in the inner tub. By dividing the number of detection areas according to the laundry material, the difficulty of judgment can be dynamically adjusted. For example, when the laundry is made of cotton, the laundry absorbs more water and the possibility of causing eccentricity is relatively large, so the number of detection areas can be relatively large. If the laundry is made of windproof materials or silk materials with relatively low water absorption rates, the possibility of causing eccentricity is relatively small, and the number of detection areas can be relatively small. Dynamically adjusting the number of detection areas according to the laundry material can achieve a dynamic balance between the detection complexity and the detection accuracy.

[0013] In some embodiments of the present invention, when it is determined that there is an eccentricity situation, an eccentricity correction process is executed, which specifically includes: When there is a detection area where the maximum weight difference of the laundry exceeds the first set value, control the agitator to rotate to disperse the laundry; When there is a detection area where the maximum weight difference of the laundry exceeds the second set value, control the inner tub to rotate so that the detection area with the lowest laundry weight is within the range of the washing machine water inlet, and perform a water inlet operation to balance the weight distribution in the tub; Wherein, the first set value is lower than the second set value.

[0014] After calculating the weights of the laundry in each detection area, calculate the weight differences between every two detection areas, and find the maximum weight difference of the laundry. If the maximum weight difference of the laundry exceeds a first set value that can cause an eccentricity situation, first control the agitator to rotate to disperse the laundry, and implement weight balance by dispersing the laundry. If the maximum weight difference of the laundry exceeds a second set value, control the inner tub to rotate, so that the detection area with the lowest weight of the laundry rotates into the range of the water inlet, and increase the weight in this detection area by filling water, thereby achieving the weight balance of the entire inner tub. Through this hierarchical control, an efficient and reliable deviation correction effect can be achieved.

[0015] The present invention also provides a pulsator washing machine configured with a dehydration process, including: An RFID identification unit, installed above the inner tub; A pre-dehydration detection unit, configured to control the rotation of the inner tub before the start of the dehydration process, and obtain the identification data of the RFID identification unit during the rotation of the inner tub; An identification data analysis unit, configured to analyze the identification data to obtain the number of laundry items and the laundry material information identified in each detection area; An eccentricity judgment unit, configured to judge the weight distribution of the laundry in the tub based on the number of laundry items and the laundry material information, and judge whether there is an eccentricity situation according to the weight distribution in the tub; An eccentricity correction unit, configured to execute an eccentricity correction process when the eccentricity judgment unit judges that there is an eccentricity situation.

[0016] Compared with the prior art, the advantages and positive effects of the present invention are as follows: For the pulsator washing machine provided by the present invention, before the start of the dehydration process, the rotation of the inner tub is first controlled, and during the rotation, the identification data obtained by the RFID identification unit for identifying the RFID tags of the laundry is acquired. The identification data is analyzed to obtain the number of laundry items and the laundry material information identified in each detection area of the inner tub, and the weight situation in each detection area is calculated based on the number of laundry items and the laundry material information, so as to know the weight distribution situation in the tub. According to the weight distribution situation, it is judged whether there is an eccentricity situation in the tub. When there is an eccentricity situation, an eccentricity correction process is executed to achieve weight balance in the tub, and then the dehydration process is started, avoiding accidents such as the inner tub hitting the cabinet due to the eccentricity situation, enabling the dehydration process to be smoothly executed, protecting the washing machine from being hit and improving the user experience.

[0017] In some embodiments of the present invention, the pulsator washing machine further includes: A unit detection time determination unit, configured to determine the unit detection time of each detection area according to the number of detection areas and the rotation speed of the inner tub; then, The recognition data parsing unit obtains the number of laundry items recognized in each detection area and the laundry material information by parsing the recognition data within the unit detection time.

[0018] In some embodiments of the present invention, the pulsator washing machine further includes: a first detection area number determination unit for determining the number of detection areas according to the type of washing process.

[0019] In some embodiments of the present invention, the pulsator washing machine further includes: a second detection area number determination unit for obtaining the laundry material information from the recognition data parsing unit and determining the number of detection areas based on the laundry material information.

[0020] In some embodiments of the present invention, the eccentricity correction process executed by the eccentricity correction unit includes: When there is a detection area where the maximum difference in laundry weight exceeds a first set value, controlling the pulsator to rotate to disperse the laundry; When there is a detection area where the maximum difference in laundry weight exceeds a second set value, controlling the inner tub to rotate so that the detection area with the lowest laundry weight is within the range of the washing machine water inlet, and performing a water inlet operation to balance the weight distribution in the tub; wherein, the first set value is lower than the second set value.

[0021] After reading the detailed description of the embodiments of the present invention in conjunction with the drawings, other features and advantages of the present invention will become clearer. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 Schematic diagram of the control steps of the washing machine control method proposed by the present invention; Figure 2 Schematic diagram of a division of the detection area in the washing machine control method proposed by the present invention; Figure 3 Schematic diagram of the control steps of the washing machine control method given in the implementation of the present invention; Figure 4 Schematic diagram of the control steps of the washing machine control method given in the embodiments of the present invention; Figure 5 Schematic diagram of the control steps of the washing machine control method given in the embodiments of the present invention; Figure 6 Functional structure schematic diagram of the pulsator washing machine proposed by the present invention. Detailed implementation mode

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0025] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0026] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0027] The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise stated, the meaning of "plurality" is two or more.

[0028] The washing machine control method proposed by the present invention aims to solve the problem that the washing machine with a wave wheel collides with the box body or the control rod due to eccentricity at the initial stage of the dehydration process. By transforming the existing RFID detection technology, the weight of the load in the barrel is balanced before the dehydration process starts, avoiding the occurrence of collisions with the box body or the control rod and ensuring the normal start of the dehydration process.

[0029] As Figure 1 shown, the washing machine control method proposed by the present invention includes the following steps: Step S1: Control the inner barrel to rotate.

[0030] The precondition for implementing the washing machine control method of the present invention is: an RFID identification unit is installed above the inner tub of the washing machine, and each piece of laundry has an RFID tag. The RFID tag includes at least the laundry identification, the laundry weight, and the laundry material information. Further, it may also include information such as the water absorption rate of the material and the weight after water absorption, which are not specifically limited in the embodiments of the present invention.

[0031] Before starting the dehydration process, first control the rotation of the inner tub of the washing machine at a set speed, and this set speed needs to ensure that the RFID identification unit installed above the inner tub can read the RFID tags on each piece of laundry.

[0032] Step S2: Obtain the identification data of the RFID identification unit during the rotation of the inner tub.

[0033] Since the inner tub starts to rotate, the RFID identification unit also starts synchronously. During the rotation of the inner tub, the RFID identification unit detects the RFID tags of each piece of laundry and reads the tag data.

[0034] Step S3: Analyze the identification data to obtain the number of laundries identified in each detection area and the laundry material information.

[0035] In the embodiments of the present invention, the inner tub is divided into several detection intervals. For example, the inner tub is divided into four detection intervals A1, A2, A3, and A4 as shown. When the inner tub rotates, the four detection intervals pass through the RFID identification unit in sequence. The RFID identification unit identifies the RFID tags in the corresponding detection intervals. After the inner tub rotates at least one week, the RFID identification unit reads the RFID tags of all laundries. Figure 2 As shown, when the inner tub rotates, the four detection intervals pass through the RFID identification unit in sequence. The RFID identification unit identifies the RFID tags in the corresponding detection intervals. After the inner tub rotates at least one week, the RFID identification unit reads the RFID tags of all laundries.

[0036] By analyzing all the RFID tags, at least the number of laundries and the laundry material information of each piece of laundry can be obtained.

[0037] Step S4: Judge the weight distribution of the laundries in the tub based on the number of laundries and the laundry material information.

[0038] For each detection area, according to the RFID tags read, the number of laundries and the material information of each piece of laundry are obtained. According to the material information, its water absorption rate can be queried. Based on the laundry weight and the water absorption rate, the weight after water absorption is calculated. Finally, the weights after water absorption of each piece of laundry are added up to obtain the total weight of the laundries in the detection area.

[0039] After calculating the total weights in all detection areas, the weight distribution situation in the tub can be known.

[0040] Step S5: Judge whether there is an eccentricity situation according to the weight distribution in the tub.

[0041] According to the total weight within each detection interval, it can be known whether there is a detection interval with an excessive total weight. The laundry within the range of the detection interval with an excessive total weight is likely to cause an eccentricity situation. If the total weights within each detection interval are not much different, it can be inferred that the eccentricity situation is not likely to occur, and the dehydration process can be directly executed.

[0042] Step S6: When it is determined that there is an eccentricity situation, execute the eccentricity correction process.

[0043] When it is determined that there is an eccentricity risk, execute the pre-configured eccentricity correction process for the washing machine to evenly adjust the weight inside the tub, so that the weight inside the tub is evenly distributed before the dehydration process starts, and avoid the situation of hitting the cabinet or the control rod when the dehydration process starts.

[0044] The eccentricity correction process can be implemented according to any existing eccentricity correction method. The specific implementation manner of the present invention will be described in detail in the following embodiments.

[0045] For the washing machine control method proposed by the present invention above, before the dehydration process starts, first control the inner tub to rotate. During the rotation, obtain the identification data of the RFID tags of the laundry by the RFID identification unit, analyze the identification data to obtain the number of laundry items identified in each detection area of the inner tub and the laundry material information, calculate the weight situation in each detection area according to the number of laundry items and the laundry material information, so as to know the weight distribution situation inside the tub. According to the weight distribution situation, judge whether there is an eccentricity situation inside the tub. When there is an eccentricity situation, execute the eccentricity correction process to make the weight inside the tub balanced, and then start the dehydration process, avoiding the accident of the inner tub hitting the cabinet due to the eccentricity situation, enabling the dehydration process to be smoothly executed, protecting the washing machine from being hit and improving the user experience.

[0046] The following uses several specific embodiments to make a detailed description of the washing machine control method proposed by the present invention.

[0047] In the washing machine control method according to an embodiment of the present invention, as Figure 3 shown, it includes the following steps: Step S31: Control the inner tub to rotate at a set speed, and at the same time start the RFID identification unit.

[0048] Step S32: Obtain the identification data of the RFID identification unit during the rotation of the inner tub.

[0049] Step S33: Determine the unit detection time of each detection area according to the number of detection areas and the rotation speed of the inner tub.

[0050] Taking Figure 2 the partition shown as an example, when the inner tub rotates one week at the set speed and takes time S1, the unit detection time of each detection area is S1 / 4.

[0051] Step S34: Analyze the recognition data within the unit detection time to obtain the number of washed objects recognized in each detection area and the material information of the washed objects.

[0052] Within the S1 time after the inner barrel starts, the RFID tag data read every S1 / 4 time is the recognition data corresponding to one detection area. Based on the recognition data, it is possible to know the number of washed objects and the material information of the washed objects in each detection interval.

[0053] Step S35: Judge the weight distribution of the washed objects in the barrel based on the number of washed objects and the material information of the washed objects in each detection interval.

[0054] For each detection area, obtain the number of washed objects and the material information of each washed object according to the read RFID tag. The water absorption rate can be queried according to the material information. Calculate the weight after water absorption based on the weight of the washed object and the water absorption rate. Finally, add the weights after water absorption of each washed object to obtain the total weights W1, W2, W3, and W4 of the washed objects in the detection area.

[0055] After calculating the total weights of all detection areas, the weight distribution in the barrel can be known.

[0056] Step S36: Judge whether there is an eccentricity situation according to the weight distribution in the barrel. According to the total weights W1, W2, W3, and W4 in each detection interval, it is possible to know whether there is a detection interval with an excessive total weight. The washed objects in the range of the detection interval with an excessive total weight are likely to cause an eccentricity situation. If the total weights in each detection interval are not much different, it can be inferred that an eccentricity situation is not likely to occur, and the dehydration process can be directly executed.

[0057] Step S37: Execute the eccentricity correction process when it is judged that there is an eccentricity situation.

[0058] When it is judged that there is a risk of eccentricity, execute the pre-configured eccentricity correction process for the washing machine to evenly adjust the weight in the barrel and evenly distribute the weight in the barrel before the dehydration process starts, so as to avoid the situation of hitting the box body or the control rod when the dehydration process starts.

[0059] In this embodiment, the time required for the inner tub to rotate one circle is calculated based on the rotation speed of the inner tub. Furthermore, according to the number of detection areas, the unit detection time that can be allocated to each detection area can be calculated. Then, when parsing and identifying the data, the identification data within each unit detection time reflects the laundry data within the corresponding detection area, and thus the number of laundry items and the material of the laundry within each detection area can be known. According to the material of the laundry, the water absorption rate of each piece of laundry is determined, and thus the weight of the laundry within each detection area can be calculated. Based on the weights of the laundry in all detection areas, the weight distribution within the tub can be known. In the present invention, the rotation speed of the inner tub is adjustable, and the number of detection areas can be adjusted according to the actual application scenario. Therefore, based on the above method, the judgment accuracy of the weight distribution within the tub by the washing machine can be flexibly adjusted without other hardware adjustments and supports.

[0060] The washing machine control method provided in the second embodiment of the present invention is as Figure 4 shown, and includes the following steps: Step S41: Control the inner tub to rotate at a set rotation speed, and at the same time start the RFID identification unit.

[0061] Step S42: Obtain the identification data of the RFID identification unit during the rotation of the inner tub.

[0062] Step S43: Determine the unit detection time of each detection area according to the number of detection areas and the rotation speed of the inner tub.

[0063] Step S44: Parse the identification data within the unit detection time to obtain the number of laundry items and the laundry material information identified within each detection area.

[0064] Step S45: Judge the weight distribution of the laundry in the tub based on the number of laundry items and the laundry material information in each detection interval.

[0065] Step S46: Calculate the maximum laundry weight difference according to the weight distribution in the tub.

[0066] Calculate the weight difference between two detection partitions, and find the largest difference max(Wi - Wj).

[0067] Step S47: Judge whether the maximum laundry weight difference exceeds the first set value.

[0068] The first set value is preset as the difference that may cause an eccentric situation, that is, the eccentric situation is not serious. In this embodiment, a second set value is also preset, and the second set value is greater than the first set difference. When the first set difference indicates that an eccentric situation may occur, the second set difference represents that an eccentric situation will definitely occur. If it does not exceed the first set value, directly execute the dehydration process. If it exceeds the first set value, Step S48: Determine whether it is less than the second set difference.

[0069] If it is less than the second set difference, then step S49: Control the agitator to rotate to disperse the laundry.

[0070] When there is a possible eccentricity situation, implement weight balance by dispersing the laundry.

[0071] If it is greater than the second set difference, step S50: Control the inner tub to rotate so that the detection area with the lowest laundry weight rotates into the range of the water inlet.

[0072] Step S51: Inlet water limited by the weight corresponding to the second set difference.

[0073] Increase the weight in this detection area by inletting water, so as to achieve the weight balance of the entire inner tub.

[0074] Step S52: Start the dehydration process after the water inlet ends.

[0075] In this embodiment, after calculating the laundry weights in each detection area, calculate the weight differences between every two detection areas, find the largest laundry weight difference. If the largest laundry weight difference exceeds a first set value that can cause an eccentricity situation, first control the agitator to rotate to disperse the laundry, and implement weight balance by dispersing the laundry. If the largest laundry weight difference exceeds the second set value, control the inner tub to rotate so that the detection area with the lowest laundry weight rotates into the range of the water inlet, and increase the weight in this detection area by inletting water, so as to achieve the weight balance of the entire inner tub. Through this hierarchical control, an efficient and reliable deviation correction effect can be achieved.

[0076] The washing machine control method given in the third embodiment of the present invention, as Figure 5 shown, includes the following steps: Step S61: Control the inner tub to rotate at a set speed, and at the same time start the RFID identification unit.

[0077] Step S62: Obtain the identification data of the RFID identification unit during the rotation of the inner tub.

[0078] Step S63: Determine the number of detection areas based on the type of washing process or the information of the laundry material.

[0079] In this embodiment, the type of the laundry can be determined according to the type of the washing process selected by the user. Different types of laundry have different effects on causing eccentricity of the inner tub. Dividing the number of detection areas according to the type of laundry can dynamically adjust the difficulty of judgment. For example, when the laundry is a large spring or autumn coat or cotton-padded clothes, the volume of the laundry is large and the distribution area in the tub is also large, so the number of detection areas can be relatively small. If the laundry is small summer clothes or underwear, etc., the volume of the laundry is small, the distribution area in the tub is small, and the possibility of piling up in one position is high, so the number of detection areas needs to be relatively large. Dynamically adjusting the number of detection areas through the type of washing process can achieve a dynamic balance between the detection complexity and the detection accuracy.

[0080] After parsing and identifying the data to obtain the laundry material information, the water absorption rate of the laundry is determined according to the laundry material information. Different materials of laundry have different water absorption conditions and different effects on causing eccentricity of the inner tub. Dividing the number of detection areas according to the laundry material can dynamically adjust the difficulty of judgment. For example, when the laundry is made of cotton material, the laundry absorbs more water and the possibility of causing eccentricity is relatively large, so the number of detection areas can be relatively large. If the laundry is made of windproof material or silk material with relatively low water absorption rate, the possibility of causing eccentricity is relatively small, and the number of detection areas can be relatively small. Dynamically adjusting the number of detection areas through the laundry material can achieve a dynamic balance between the detection complexity and the detection accuracy.

[0081] In practical applications, when dividing the number of detection areas according to the laundry material information, there are cases where the materials of multiple pieces of laundry are not the same. In this case, the method of assigning weight coefficients can be adopted to characterize the influence of different laundry materials on eccentricity. For example, when there are both cotton laundry and chemical fiber laundry, according to the water absorption characteristics, a weight coefficient of 0.7 is assigned to the cotton laundry, and a weight coefficient of 0.3 is assigned to the chemical fiber laundry. Then, the weighted method is used to determine the number of detection areas. Taking the number of detection areas specified for the cotton material as 4 and the number of detection areas specified for the chemical fiber material as 2 as an example, calculate 4 * 0.7 + 2 * 0.3 = 3.4, and divide four detection areas.

[0082] Step S64: Determine the unit detection time of each detection area according to the number of detection areas and the rotation speed of the inner tub.

[0083] Step S65: Parse the recognition data within the unit detection time to obtain the number of laundry items and the laundry material information recognized in each detection area.

[0084] Step S66: Judge the weight distribution of the laundry in the tub based on the number of laundry items and the laundry material information in each detection interval.

[0085] Step S67: Calculate the maximum weight difference of the laundry according to the weight distribution in the tub.

[0086] Calculate the weight difference between every two detection zones, and find the maximum difference max(Wi - Wj).

[0087] Step S68: Determine whether the maximum weight difference of the laundry exceeds a first set value.

[0088] If it does not exceed the first set value, directly execute the dehydration process; if it exceeds the first set value, go to Step S69: Determine whether it is less than a second set difference. If it is less than the second set difference, then go to Step S70: Control the agitator to rotate to disperse the laundry. If it is greater than the second set difference, go to Step S71: Control the inner tub to rotate so that the detection zone with the lowest weight of the laundry rotates into the range of the water inlet.

[0089] Step S72: Inlet water up to the weight corresponding to the second set difference.

[0090] Increase the weight in this detection zone by inletting water, so as to achieve the weight balance of the entire inner tub.

[0091] Step S73: Start the dehydration process after the water inlet ends.

[0092] The fourth embodiment of the present invention provides a pulsator washing machine, as Figure 6 shown, including: An RFID identification unit 1, installed above the inner tub.

[0093] A pre - dehydration detection unit 2, used to control the rotation of the inner tub before starting the dehydration process, and obtain the identification data of the RFID identification unit during the rotation of the inner tub.

[0094] An identification data parsing unit 3, used to parse the identification data to obtain the number of laundries identified in each detection zone and the laundry material information.

[0095] An eccentricity judgment unit 4, used to judge the weight distribution of the laundry in the tub based on the number of laundries and the laundry material information, and judge whether there is an eccentricity situation according to the weight distribution in the tub.

[0096] An eccentricity correction unit 5, used to execute the eccentricity correction process when the eccentricity judgment unit judges that there is an eccentricity situation.

[0097] In some embodiments of the present invention, the pulsator washing machine further includes a unit detection time determination unit 6, used to determine the unit detection time of each detection zone according to the number of detection zones and the rotation speed of the inner tub; then, the identification data parsing unit 3 obtains the number of laundries identified in each detection zone and the laundry material information by parsing the identification data within the unit detection time.

[0098] In some embodiments of the present invention, the agitator washing machine further includes a first detection area number determination unit 7 for determining the number of detection areas according to the type of washing process.

[0099] In some embodiments of the present invention, the agitator washing machine further includes a second detection area number determination unit 8 for obtaining the washing material information from the recognition data analysis unit and determining the number of detection areas based on the washing material information.

[0100] In some embodiments of the present invention, the eccentricity correction process executed by the eccentricity correction unit 5 includes: when there is a detection area where the maximum difference in the weight of the washing objects exceeds a first set value, controlling the agitator to rotate to disperse the washing objects; when there is a detection area where the maximum difference in the weight of the washing objects exceeds a second set value, controlling the inner tub to rotate so that the detection area with the lowest weight of the washing objects is within the range of the water inlet of the washing machine, and performing a water inlet operation to balance the weight distribution in the tub; wherein, the first set value is lower than the second set value.

[0101] Specifically, the control method of the agitator washing machine has been described in detail in the above embodiments and will not be elaborated here.

[0102] It should be noted that in the specific implementation process, the above control part can be implemented by a processor in the form of hardware executing computer execution instructions in the form of software stored in a memory, which will not be elaborated here, and the programs corresponding to the actions executed by the above control circuit can all be stored in the computer-readable storage medium of the system in the form of software, so as to facilitate the processor to call and execute the operations corresponding to each above module.

[0103] The computer-readable storage medium in the above text may include volatile memory, such as random access memory; it may also include non-volatile memory, such as read-only memory, flash memory, hard disk or solid-state drive; it may also include a combination of the above types of memory.

[0104] The processor mentioned above can also be a general term for multiple processing elements. For example, the processor can be a central processing unit, or it can be other general-purpose processors, digital signal processors, application-specific integrated circuits, field-programmable gate arrays or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor, etc., and can also be a dedicated processor.

[0105] It should be pointed out that the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by those of ordinary skill in the art within the essence of the present invention should also fall within the protection scope of the present invention.

Claims

1. A washing machine control method, executed before the dehydration process of the washing machine is started, characterized in that: include: Control the rotation of the inner barrel; Acquiring identification data of the RFID identification unit during the rotation of the inner barrel; The RFID identification unit is installed above the inner barrel; Analyzing the identification data to obtain the number of laundry items identified in each detection area and information on the material of the laundry items; Determining the weight distribution of the laundry in the tub based on the number of laundry items and the laundry material information, and determining whether there is an eccentricity according to the weight distribution in the tub; When it is determined that there is an eccentricity condition, an eccentricity correction process is executed.

2. The washing machine control method according to claim 1, characterized in that: The method further comprises: The unit detection time of each detection area is determined according to the number of detection areas and the rotation speed of the inner barrel; then, The identification data is analyzed to obtain the number of laundry items and laundry material information identified in each detection area, including: The identification data within the unit detection time is analyzed to obtain the number of laundry items identified in each detection area and information on the material of the laundry items.

3. The washing machine control method according to claim 1, characterized in that: Before parsing the identification data to obtain the number of laundry items and laundry material information identified in each detection area, the method further includes: The number of detection areas is determined according to the type of washing process.

4. The washing machine control method according to claim 1, characterized in that: Before parsing the identification data to obtain the number of laundry items and laundry material information identified in each detection area, the method further includes: The number of detection areas is determined based on the laundry material information.

5. The washing machine control method according to claim 1, characterized in that: When it is determined that there is eccentricity, an eccentricity correction process is executed, including: When there is a detection area where the maximum laundry weight difference exceeds a first set value, the pulsator is controlled to rotate to break up the laundry; When there is a detection area where the maximum laundry weight difference exceeds a second set value, the inner drum is controlled to rotate so that the detection area with the lowest laundry weight is located within the water inlet range of the washing machine, so as to balance the weight distribution in the drum by water inlet operation; The first setting value is lower than the second setting value.

6. A pulsator washing machine, equipped with a dehydration process, characterized in that: include: An RFID identification unit is installed above the inner barrel; A pre-dehydration detection unit, used to control the rotation of the inner tub before the dehydration process starts, and to obtain the identification data of the RFID identification unit during the rotation of the inner tub; An identification data analysis unit, used to analyze the identification data to obtain the number of laundry items identified in each detection area and information on the material of the laundry items; An eccentricity determination unit, used to determine the weight distribution of the laundry in the tub based on the number of laundry items and the laundry material information, and to determine whether there is an eccentricity according to the weight distribution in the tub; The eccentricity correction unit is used to execute an eccentricity correction process when the eccentricity judgment unit judges that an eccentricity situation exists.

7. The pulsator washing machine according to claim 6, characterized in that: The pulsator washing machine also includes: The unit detection time determination unit is used to determine the unit detection time of each detection area according to the number of detection areas and the rotation speed of the inner barrel; then, The identification data analysis unit analyzes the identification data within a unit detection time to obtain the number of laundry items identified in each detection area and information on the material of the laundry items.

8. The pulsator washing machine according to claim 6, characterized in that: The pulsator washing machine also includes: The first detection area number determination unit is used to determine the number of detection areas according to the washing process type.

9. The pulsator washing machine according to claim 6, characterized in that: The pulsator washing machine also includes: The second detection area number determination unit is used to obtain the laundry material information from the identification data analysis unit and determine the number of detection areas based on the laundry material information.

10. The pulsator washing machine according to claim 6, characterized in that: The eccentricity correction process performed by the eccentricity correction unit includes: When there is a detection area where the maximum laundry weight difference exceeds a first set value, the pulsator is controlled to rotate to break up the laundry; When there is a detection area where the maximum laundry weight difference exceeds a second set value, the inner drum is controlled to rotate so that the detection area with the lowest laundry weight is located within the water inlet range of the washing machine, so as to balance the weight distribution in the drum by water inlet operation; The first setting value is lower than the second setting value.

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