CN116411405A

CN116411405A - Foam detection method and device, electronic equipment and storage medium

Info

Publication number: CN116411405A
Application number: CN202111635415.2A
Authority: CN
Inventors: 丁焕琪; 姜勇强; 何云峰; 赵志龙; 梁青; 吴军
Original assignee: Qingdao Haier Washing Electric Appliance Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Washing Electric Appliance Co Ltd; Haier Smart Home Co Ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2023-07-11

Abstract

The invention belongs to the technical field of clothes washing equipment, and particularly provides a foam detection method, a foam detection device, electronic equipment and a storage medium, which aim to solve the problems that a large amount of foam generated in the washing process of the existing clothes washing equipment overflows from an air hole and/or a water storage tank, so that foam flows out of the peripheral ground of the clothes washing equipment, electrical short circuits and the like, and when the clothes washing equipment is dehydrated, the power of a motor exceeds a limit value due to the large amount of foam, so that the power of the motor is overlarge. For this purpose, the present invention rotates a laundry apparatus at a preset rotational speed for a preset time by controlling the laundry apparatus during a washing process, and acquires a plurality of eccentric values within the preset time; according to a plurality of eccentric values, whether the foam in the washing cylinder of the clothes washing equipment is excessive or not is detected, and whether the foam in the washing cylinder is excessive or not can be detected, so that the timeliness and the accuracy of foam detection are improved, and the problems of large foam overflow, electrical short circuit and overlarge motor power are avoided.

Description

Foam detection method and device, electronic equipment and storage medium

Technical Field

The invention belongs to the technical field of clothes washing equipment, and particularly provides a foam detection method, a foam detection device, electronic equipment and a computer readable storage medium.

Background

With the improvement of the living standard of people, laundry devices such as drum washing machines have become indispensable home appliances in the life of people and have brought great convenience to daily life.

Currently, since most users have no accurate concept of the amount of detergent such as washing powder or liquid detergent, a large amount of foam is often generated in the laundry washing device during the washing process due to the excessive amount of detergent injected at one time or the use of high foam detergent, and the large amount of foam may overflow from the air holes and/or the water storage tank to the outside of the laundry washing device, resulting in the outflow of foam on the peripheral floor of the laundry washing device, and further resulting in poor user experience. In addition, a large amount of foam can overflow to electric devices of the clothes washing equipment, so that problems such as short circuit and the like occur, and potential safety hazards exist; further, when the laundry washing appliance is dehydrating, a large amount of foam may cause the motor power to exceed the limit value, and thus there is a risk of the motor power being too high.

Accordingly, there is a need in the art for a new foam detection method to address the above-described problems.

Disclosure of Invention

The invention aims to solve the technical problems that a large amount of foam generated in the washing process of the existing clothes washing equipment overflows from the air holes and/or the water storage tank, so that the foam flows out of the peripheral ground of the clothes washing equipment, short circuits of electric appliances and the like are caused, and when the clothes washing equipment is dehydrated, the motor power exceeds a limit value due to the large amount of foam, so that the motor power is overlarge.

In order to achieve the above object, the present invention provides a foam detection method applied to a laundry device, comprising: in the washing process, controlling the clothes washing equipment to rotate at a preset rotating speed for a preset time, and acquiring a plurality of eccentric values in the preset time; based on the plurality of eccentricity values, it is detected whether foam in a washing tub of the laundry washing appliance is excessive.

In some embodiments, detecting whether foam is excessive in a wash tub of a laundry washing appliance based on a plurality of eccentricity values comprises: performing first sliding treatment on the eccentric values to obtain a plurality of first sliding values; performing difference solving processing on the plurality of first sliding values to obtain a plurality of first difference values; summing the first difference values to obtain a first summation value; the first summation value is compared with a first preset value to determine whether there is an excess of foam in the wash tub.

In some embodiments, performing a first sliding process on the plurality of eccentricity values to obtain a plurality of first sliding values includes: and calculating the average value of two adjacent eccentric values in the plurality of eccentric values to obtain a plurality of first sliding values.

In some embodiments, performing a difference process on the plurality of first sliding values to obtain a plurality of first difference values includes: and calculating the difference value of two adjacent first sliding values in the plurality of first sliding values to obtain a plurality of first difference values.

In some embodiments, comparing the first summation value to a first preset value to determine whether there is an excess of foam within the wash tub comprises: if the first summation value is less than a first preset value, an excess of foam in the wash tub is determined.

In some embodiments, the foam detection method further comprises: under the condition that the excessive foam in the washing cylinder is determined, the rotation stop ratio of the washing cylinder is adjusted; alternatively, in case that the foam in the washing tub is excessively determined, the laundry washing appliance is controlled to perform the defoaming program.

In some embodiments, the foam detection method further comprises: performing second sliding treatment on the plurality of first sliding values to obtain a plurality of second sliding values; performing a difference processing on the plurality of first sliding values to obtain a plurality of first difference values, including: performing difference solving processing on the plurality of second sliding values to obtain a plurality of second difference values; summing the plurality of first differences to obtain a first summation value, including: summing the second difference values to obtain a second sum value; comparing the first summation value with a first preset value to determine whether the foam in the wash tub is excessive, comprising: the second summation value is compared with a second preset value to determine whether the foam in the washing drum is excessive, wherein the second preset value is smaller than the first preset value.

In some embodiments, comparing the second summation value to a second preset value to determine whether there is an excess of foam within the wash tub comprises: if the second summation value is less than the second preset value, determining that the foam in the washing drum is excessive.

In some embodiments, the foam detection method further comprises: denoising the plurality of eccentricity values to remove abnormal values in the plurality of eccentricity values.

The invention also provides a foam detection apparatus for use in a laundry washing appliance, the apparatus comprising: the acquisition module is configured to control the clothes washing equipment to rotate at a preset rotating speed for a preset time in the washing process, and acquire a plurality of eccentric values in the preset time; and a detection module configured to detect whether foam in a washing drum of the laundry washing appliance is excessive or not, based on the plurality of eccentricity values.

The invention also provides an electronic device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of any one of the above technical solutions when executing the computer program.

The invention also provides a computer readable storage medium storing a computer program which when executed by a processor implements the steps of the method of any of the above technical solutions.

As can be appreciated by those skilled in the art, in the case of adopting the above-mentioned technical solution, the present invention is achieved by controlling the laundry washing apparatus to rotate at a preset rotational speed for a preset time and acquiring a plurality of eccentric values within the preset time during the washing process; according to a plurality of eccentric values, whether the foam in the washing cylinder of the clothes washing equipment is excessive or not is detected, and whether the foam in the washing cylinder is excessive or not can be detected, so that timeliness and accuracy of foam detection are improved, the safety problem that a large amount of foam overflows to the outside of the clothes washing equipment from the air holes and/or the water storage tank to cause foam to flow out and electrical short circuit on the peripheral ground of the clothes washing equipment is avoided, and the problem that when the clothes washing equipment is dehydrated, the motor power is caused to exceed a limit value by a large amount of foam, and the motor power is overlarge is avoided.

Drawings

FIG. 1 is a schematic flow chart of a foam detection method according to the present invention;

FIG. 2 is a schematic flow chart of another foam detection method according to the present invention;

FIG. 3 is a schematic view of a foam detection apparatus according to the present invention;

fig. 4 is a schematic structural view of an electronic device according to the present invention.

Detailed Description

Some embodiments of the invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.

In the description of the present application, ordinal numbers such as "first," "second," etc., are used merely to describe different technical features of the same type and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions or technical means between the embodiments of the present application may be combined with each other, so long as those skilled in the art can implement the combination of the technical solutions, and when the technical solutions contradict or cannot be implemented, it should be considered that the combination of the technical solutions does not exist, and is not within the protection scope of the present invention.

In the description of the present invention, a "module," "processor" may include hardware, software, or a combination of both. A module may comprise hardware circuitry, various suitable sensors, communication ports, memory, or software components, such as program code, or a combination of software and hardware. The processor may be a central processor, a microprocessor, a digital signal processor, or any other suitable processor. The processor has data and/or signal processing functions. The processor may be implemented in software, hardware, or a combination of both. Non-transitory computer readable storage media include any suitable medium that can store program code, such as magnetic disks, hard disks, optical disks, flash memory, read-only memory, random access memory, and the like. Furthermore, the term "a and/or B" means all possible combinations of a and B, such as a alone, B alone or a and B. The singular forms "a", "an" and "the" include plural referents.

Hereinafter, a foam detection method and apparatus according to embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 is a flow chart of a foam detection method according to the present invention. The suds detection method of fig. 1 may be performed by a server, by a laundry appliance, or by a combination of the server and the laundry appliance. As shown in fig. 1, the foam detection method is applied to a laundry washing appliance, and includes:

s101, in the washing process, controlling the clothes washing equipment to rotate at a preset rotating speed for a preset time, and acquiring a plurality of eccentric values in the preset time;

s102, detecting whether foam in a washing drum of the clothes washing device is excessive or not according to a plurality of eccentric values.

Specifically, the server may be a server that provides various services, for example, a background server that receives a request transmitted by a terminal device with which communication connection is established, and the background server may perform processing such as receiving and analyzing the request transmitted by the terminal device and generate a processing result. The server may be a server, a server cluster formed by a plurality of servers, or a cloud computing service center, which is not limited in this embodiment of the present invention.

The server may be hardware or software. When the server is hardware, it may be various electronic devices that provide various services to the terminal device. When the server is software, it may be a plurality of software or software modules that provide various services to the terminal device, or may be a single software or software module that provides various services to the terminal device, which is not limited in this embodiment of the present invention.

The terminal device may be hardware or software. When the terminal device is hardware, it may be a variety of electronic devices having a display screen and supporting communication with a server, including but not limited to smartphones, tablet computers, laptop and desktop computers, and the like; when the terminal device is software, it may be installed in the electronic device as described above. The terminal device may be implemented as a plurality of software or software modules, or as a single software or software module, as embodiments of the invention are not limited in this regard.

The laundry washing appliance may comprise a drum washing machine, a pulsator washing machine, a combination washing machine, a shoe washing appliance, and/or a washing and drying integrated appliance, etc., and a person skilled in the art may flexibly set a specific structure of the laundry washing appliance in practical applications, as long as laundry can be washed and/or dried by the laundry washing appliance.

The preset rotational speed is a rotational speed preset for acquiring an eccentricity value of the laundry washing appliance during washing. The preset rotation speed may be a rotation speed set according to the weight and/or type of laundry in the washing drum of the laundry washing apparatus, may be a rotation speed preset according to empirical data, or may be a rotation speed obtained by adjusting the set rotation speed according to actual needs, which is not limited in the embodiment of the present invention. For example, the preset rotational speed may be 45rpm, 50rpm, 55rpm, 60rpm, 70rpm, 75rpm, 80rpm, 85rpm, etc. Preferably, in the embodiment of the present invention, the preset rotation speed is 55rpm. Here, rpm is an abbreviation of Revolutions Per Minute, i.e., revolutions per minute, indicating the number of revolutions per minute of the apparatus.

The preset time refers to a time for which the driver of the laundry apparatus drives the motor to rotate at a preset rotational speed. The preset time may be a time preset according to empirical data, or may be a time obtained by adjusting the set time according to actual needs, which is not limited in the embodiment of the present invention. For example, the preset time may be in the range of 10 seconds to 30 seconds. Preferably, in the embodiment of the present invention, the preset time is 20 seconds.

The eccentric state Of the laundry washing appliance is divided into a static eccentric (OOB) and a dynamic eccentric (Dynamic Out Of Balance, DOOB). Static eccentricity is typically the eccentricity value that the laundry washing appliance tests after stabilizing at a lower rotational speed, and dynamic eccentricity is typically the eccentricity value that the laundry washing appliance tests during climbing to a certain higher rotational speed. Further, the specific number of the eccentric values can be adjusted according to the actual requirements of the application scene, which is not limited in the embodiment of the present invention. In the embodiment of the invention, the eccentricity value is static eccentricity, and the number of the eccentricity values is 100.

It should be noted that the eccentricity value is calculated by an algorithm through the eccentricity amount to represent the distribution condition value of the clothes load, and the eccentricity preset values set by different washing machine models are different.

According to the technical scheme provided by the embodiment of the invention, in the washing process, the clothes washing equipment is controlled to rotate at the preset rotating speed for the preset time, and a plurality of eccentric values in the preset time are obtained; according to a plurality of eccentric values, whether the foam in the washing cylinder of the clothes washing equipment is excessive or not is detected, and whether the foam in the washing cylinder is excessive or not can be detected, so that timeliness and accuracy of foam detection are improved, the safety problem that a large amount of foam overflows to the outside of the clothes washing equipment from the air holes and/or the water storage tank to cause foam to flow out and electrical short circuit on the peripheral ground of the clothes washing equipment is avoided, and the problem that when the clothes washing equipment is dehydrated, the motor power is caused to exceed a limit value by a large amount of foam, and the motor power is overlarge is avoided.

Specifically, the sliding process is also called moving process, which is a method for calculating a sliding (moving) value by sequentially increasing and decreasing new and old data period by period, thereby eliminating accidental variation factors, finding out the development trend of things, and predicting according to the development trend. In an embodiment of the invention, the sliding process is a moving average (exponential moving average), also known as an exponentially weighted average (exponentially weighted moving average), used to estimate the local mean of the variable such that the update of the variable is related to historical values over a period of time. The first slip value is a slip value obtained by calculating an average value of two adjacent eccentricity values among the plurality of eccentricity values.

The difference processing is a process of obtaining a plurality of first difference values by performing a difference operation on two adjacent first sliding values among the plurality of first sliding values obtained through the first sliding processing. The summation processing refers to a process of performing summation operation on a plurality of first differences obtained through the difference processing to obtain a first summation value.

The first preset value is a preset threshold value for judging whether the foam is excessive or not. The first preset value may be a threshold preset according to empirical data, or may be a threshold obtained by adjusting a set value according to actual needs, which is not limited in the embodiment of the present invention. For example, the first preset value may be in the range of 0 to 100. Preferably, in the embodiment of the present invention, the first preset value is 80.

For example, assuming that the driver of the laundry apparatus drives the motor to rotate at a forward rotation of 55rpm and controls the motor to stop rotating at 20 th second, at this time, data fed back from 10 th second to 20 th second end driver is recorded, resulting in four eccentricity values X1, X2, X3 and X4; the first sliding value y1= (x1+x2)/2, the first sliding value y2= (x2+x3)/2, and the first sliding value y3= (x3+x4)/2 are calculated based on the above four eccentric values and using a moving average method. Further, the three first sliding values Y1, Y2 and Y3 are subjected to a difference operation to obtain a first difference value z1=y2-Y1 and a first difference value z2=y3-Y2; and carrying out summation operation on the first difference values Z1 and Z2 to obtain a first summation value A1=Z1+Z2.

According to the technical scheme provided by the embodiment of the invention, the first sliding value is obtained by performing the first sliding treatment on the eccentric value, the first difference value is obtained by performing the difference treatment on the first sliding value, the first summation value is obtained by performing the summation treatment on the first difference value, and whether the foam is excessive or not can be accurately detected, so that the accuracy of foam detection is improved.

Specifically, after calculating the first summation value, the first summation value may be compared with a first preset value to determine whether the foam in the wash tub is excessive; further, if the first summation value is less than a first preset value, determining that the foam in the washing drum is excessive; if the first summation value is greater than or equal to a first preset value, it is determined that there is no excess foam in the wash tub.

According to the technical scheme provided by the embodiment of the invention, whether the foam in the washing cylinder is excessive or not can be accurately judged by comparing the first summation value with the first preset value, so that the accuracy of foam detection is improved.

In some embodiments, the foam detection method further comprises: under the condition that the excessive foam in the washing cylinder is determined, the rotation stop ratio of the washing cylinder is adjusted; alternatively, the laundry washing appliance is controlled to perform the de-foaming process.

In particular, in case that it is determined that the foam in the washing tub is excessive, it is possible to reduce the time for the motor to rotate, and to increase the time for the motor to be stationary, i.e., to reduce the washing cadence by reducing the rotation-to-stop ratio of the motor, to prevent the foam from overflowing. Here, the rotation stop ratio refers to a ratio of a time when the motor rotates to a time when the motor is stationary. Further, the rotation stop ratio of the motor can be determined based on the foam amount, a target rotation stop ratio corresponding to the foam overflow threshold can be obtained through experiments, and when the current foam amount is determined to exceed the foam overflow threshold, the control system sets the current rotation stop ratio of the motor as the target rotation stop ratio. It should be appreciated that the rotation-to-stop ratio may also be used to represent the transition time difference between forward and reverse rotation of the motor.

For example, the spin-to-stop ratio during washing of the laundry washing appliance is 2:1, i.e. the motor may be rotated for 2 minutes and the motor may be stationary for 1 minute, such that every 2 minutes the motor is rotated for 1 minute, one cycle of rotation is completed. When the current foam amount exceeds the foam overflow threshold, the rotation stop ratio of the motor can be set to be 1:2, so that the foam formed in the rotation process can be fully dissolved in water after the motor rotates for 1 minute and is stationary for 2 minutes, and the foam amount in the washing cylinder is reduced by reducing the rotation stop ratio of the motor.

It should be noted that the rotation stop ratio may be a rotation stop ratio preset according to actual experience data, or may be obtained by adjusting the preset rotation stop ratio according to actual needs, which is not limited in the embodiment of the present invention.

Alternatively, in case that the excessive amount of foam in the washing tub is determined, the laundry washing appliance may be controlled to perform the defoaming procedure. Here, the defoaming process may be to stop the operation of the washing tub to prevent more foam from being generated, and to turn on the drain pump, and to drain the foam through the drain pump after the foam naturally subsides; or the foam is washed by spraying water into the washing cylinder, and then the foam is discharged by opening the draining pump; or hot air is blown into the washing drum through the drying system, so that foam in the drum is blown away through the hot air.

According to the technical scheme provided by the embodiment of the invention, foam can be effectively reduced or eliminated by reducing the rotation stop ratio of the washing drum or controlling the clothes washing equipment to execute the defoaming program, so that the problems of foam outflow, electrical short circuit and the like on the peripheral ground of the clothes washing equipment caused by excessive foam overflow are avoided, the potential safety hazard is reduced, and the user experience is further improved. In addition, the problem that the motor power is too high due to the fact that a large amount of foam causes the motor power to exceed a limit value when the laundry washing machine is dehydrated is avoided, and therefore the service life of the laundry washing machine is prolonged.

In some embodiments, the foam detection method further comprises: performing second sliding treatment on the plurality of first sliding values to obtain a plurality of second sliding values; performing difference solving processing on the plurality of second sliding values to obtain a plurality of second difference values; summing the plurality of first differences to obtain a first summation value, including: summing the second difference values to obtain a second sum value; comparing the first summation value with a first preset value to determine whether the foam in the wash tub is excessive, comprising: the second summation value is compared with a second preset value to determine whether the foam in the washing drum is excessive, wherein the second preset value is smaller than the first preset value.

Specifically, in order to more accurately detect whether the foam is excessive, the second sliding treatment may be performed after the first sliding treatment. Here, the second sliding processing is a process of calculating a plurality of first sliding values by a sliding average method to obtain a plurality of second sliding values. Further, the number of sliding processes may be adjusted according to the actual requirements of the application scenario, which is not limited in the embodiment of the present invention. For example, the number of times of the sliding treatment may be one, two, three or more times. Preferably, in the embodiment of the present invention, the number of times of the sliding process is two.

The second preset value is a threshold value set in advance for judging whether the foam is excessive. The second preset value may be a preset value according to empirical data, or may be a value obtained by adjusting a preset boundary value according to actual needs, which is not limited in the embodiment of the present invention. For example, the second preset value may be in the range of 0 to 100. Preferably, in the embodiment of the present invention, the second preset value is 60.

Note that, the sliding process, the difference process, and the summation process are the same as those in the above embodiments, so that a detailed description thereof is omitted.

Specifically, if the second summation value is smaller than a second preset value, determining that the foam in the washing drum is excessive; if the second summation value is greater than or equal to a second preset value, determining that the foam in the washing drum is not excessive; further, when the foam in the washing drum is excessive, the foam amount can be reduced by adjusting the rotation stop ratio of the washing drum or controlling the laundry washing apparatus to perform the defoaming procedure, and the specific adjustment is the same as that of the above embodiment, so that the description thereof will not be repeated.

In some embodiments, the foam detection method further comprises: after a plurality of eccentric values within a preset time are acquired, denoising is performed on the eccentric values to remove abnormal values in the plurality of eccentric values.

Specifically, since there may be some uncontrollable factors in the process of acquiring the eccentric value data, there is an abnormality in part of the data, and thus, denoising of the eccentric value data is required. Here, the method of denoising processing may include, but is not limited to, removing an eccentricity value that is outside a preset range as noise data.

The preset range is a boundary line preset for determining whether the eccentricity value is abnormal. The preset range may be a range preset by the user according to empirical data, or may be a range obtained by adjusting the set range according to actual needs, which is not limited in the embodiment of the present invention. The preset range may be a range between 0 and 400.

According to the technical scheme provided by the embodiment of the invention, the abnormal data can be removed by preprocessing the eccentric value data, so that the obtained eccentric value data is more accurate.

Any combination of the above optional solutions may be adopted to form an optional embodiment of the present application, which is not described herein in detail.

Fig. 2 is a flow chart of another foam detection method according to the present invention. The suds detection method of fig. 2 may be performed by a server, by a laundry appliance, or by a combination of the server and the laundry appliance. As shown in fig. 2, the foam detection method is applied to a laundry washing appliance, and includes:

s201, during the washing process, controlling the clothes washing equipment to rotate at a preset rotating speed for a preset time, and acquiring a plurality of eccentric values in the preset time;

s202, denoising the eccentric values to remove abnormal values in the eccentric values;

s203, calculating the average value of two adjacent eccentric values in the plurality of eccentric values to obtain a plurality of first sliding values;

s204, calculating the difference value of two adjacent first sliding values in the plurality of first sliding values to obtain a plurality of first difference values;

s205, carrying out summation processing on a plurality of first difference values to obtain a first summation value;

s206, determining whether the first summation value is smaller than a first preset value, and if so, executing S207; otherwise, S209 is performed;

s207, determining excessive foam in the washing cylinder;

s208, adjusting the rotation stop ratio of the washing drum, or controlling the clothes washing equipment to execute a defoaming program;

s209, determining that the foam in the washing cylinder is not excessive.

According to the technical scheme provided by the embodiment of the invention, the first sliding value is obtained by calculating based on the eccentric value, the first difference value is obtained by calculating based on the first sliding value, the first summation value is obtained by calculating based on the first difference value, whether foam generated in the washing process is excessive or not can be determined based on the size between the first summation value and the first preset value, and under the condition that the foam is excessive, the rotation stop ratio of the washing drum is adjusted, or the clothes washing equipment is controlled to execute a defoaming program, so that the intelligent degree of eliminating or reducing the foam is improved, the situation that a large amount of foam overflows to the ground outside the clothes washing equipment through the ventilation holes and/or the water storage tank to cause ground sliding is avoided, the damage to a user is improved, the safety degree in the use process of the user is improved, the situation that a large amount of foam overflows to the electric devices around the clothes washing equipment to cause electrical short circuit and fire is avoided, the risk of electric shock caused by the user is avoided, the risk that the motor power is excessive caused by a large amount of foam is avoided, and the service life of the clothes washing equipment is further prolonged.

The following are examples of the apparatus of the present invention that may be used to perform the method embodiments of the present invention. For details not disclosed in the embodiments of the apparatus of the present invention, please refer to the embodiments of the method of the present invention.

Fig. 3 is a schematic structural view of a foam detection apparatus according to the present invention. As shown in fig. 3, the foam detection apparatus is applied to a laundry washing appliance, and includes:

an acquisition module 301 configured to control the laundry washing appliance to rotate at a preset rotational speed for a preset time and to acquire a plurality of eccentricity values within the preset time during the washing process;

the detection module 302 is configured to detect whether foam within a wash tub of the laundry washing appliance is excessive based on a plurality of eccentricity values.

In some embodiments, the detection module 302 of fig. 3 performs a first sliding process on the obtained plurality of eccentric values to obtain a plurality of first sliding values, performs a difference process on the plurality of first sliding values to obtain a plurality of first differences, and performs a summation process on the plurality of first differences to obtain a first summation value; and comparing the first summation value with a first preset value to determine whether the foam in the wash tub is excessive.

In some embodiments, the detection module 302 of fig. 3 calculates an average of two adjacent eccentricity values of the plurality of eccentricity values, resulting in a plurality of first slip values.

In some embodiments, the detection module 302 of fig. 3 calculates a difference between two adjacent first sliding values in the plurality of first sliding values, to obtain a plurality of first difference values.

In some embodiments, the detection module 302 of fig. 3 determines that there is an excess of foam within the wash tub if the first summation value is less than a first preset value.

In some embodiments, the foam detection apparatus further comprises: a processing module 303 configured to adjust a spin-to-stop ratio of the wash drum if it is determined that there is an excess of foam within the wash drum; alternatively, in case that the foam in the washing tub is excessively determined, the laundry washing appliance is controlled to perform the defoaming program.

In some embodiments, the detection module 302 of fig. 3 performs a second sliding process on the plurality of first sliding values to obtain a plurality of second sliding values; performing difference solving processing on the plurality of second sliding values to obtain a plurality of second difference values; summing the second difference values to obtain a second sum value; the second summation value is compared with a second preset value to determine whether the foam in the washing drum is excessive, wherein the second preset value is smaller than the first preset value.

In some embodiments, the detection module 302 of fig. 3 determines that there is an excess of foam within the wash tub if the second summation value is less than a second preset value.

In some embodiments, the foam detection apparatus further comprises: the denoising module 304 is configured to denoise the plurality of eccentricity values to remove an abnormal value of the plurality of eccentricity values.

It should be understood that the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic, and should not limit the implementation process of the embodiment of the present invention.

Fig. 4 is a schematic structural view of the electronic device 4 according to the present invention. As shown in fig. 4, the electronic apparatus 4 of this embodiment includes: a processor 401, a memory 402 and a computer program 403 stored in the memory 402 and executable on the processor 401. The steps of the various method embodiments described above are implemented by processor 401 when executing computer program 403. Alternatively, the processor 401, when executing the computer program 403, performs the functions of the modules/units in the above-described apparatus embodiments.

Illustratively, the computer program 403 may be partitioned into one or more modules/units, which are stored in the memory 402 and executed by the processor 401 to complete the present invention. One or more of the modules/units may be a series of computer program instruction segments capable of performing a specific function for describing the execution of the computer program 403 in the electronic device 4.

The electronic device 4 may be a desktop computer, a notebook computer, a palm computer, a cloud server, or the like. The electronic device 4 may include, but is not limited to, a processor 401 and a memory 402. It will be appreciated by those skilled in the art that fig. 4 is merely an example of the electronic device 4 and is not meant to be limiting of the electronic device 4, and may include more or fewer components than shown, or may combine certain components, or different components, e.g., the electronic device may also include an input-output device, a network access device, a bus, etc.

The processor 401 may be a central processing unit (Central Processing Unit, CPU) or other general purpose processor, digital signal processor (Digital Signal Processor, DSP), application specific integrated circuit (Application Specific Integrated Circuit, ASIC), field programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 402 may be an internal storage unit of the electronic device 4, for example, a hard disk or a memory of the electronic device 4. The memory 402 may also be an external storage device of the electronic device 4, for example, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash Card (Flash Card) or the like, which are provided on the electronic device 4. Further, the memory 402 may also include both internal storage units and external storage devices of the electronic device 4. The memory 402 is used to store computer programs and other programs and data required by the electronic device. The memory 402 may also be used to temporarily store data that has been output or is to be output.

It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working process of the units and modules in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/electronic device and method may be implemented in other manners. For example, the apparatus/electronic device embodiments described above are merely illustrative, e.g., the division of modules or elements is merely a logical functional division, and there may be additional divisions of actual implementations, multiple elements or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection via interfaces, devices or units, which may be in electrical, mechanical or other forms.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated modules/units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the present invention may implement all or part of the flow of the method of the above embodiment, or may be implemented by a computer program to instruct related hardware, and the computer program may be stored in a computer readable storage medium, where the computer program, when executed by a processor, may implement the steps of each of the method embodiments described above. The computer program may comprise computer program code, which may be in source code form, object code form, executable file or in some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth. It should be noted that the content of the computer readable medium can be appropriately increased or decreased according to the requirements of the jurisdiction's jurisdiction and the patent practice, for example, in some jurisdictions, the computer readable medium does not include electrical carrier signals and telecommunication signals according to the jurisdiction and the patent practice.

Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.

Claims

1. A foam detection method applied to a laundry appliance, the method comprising:

in the washing process, controlling the clothes washing equipment to rotate at a preset rotating speed for a preset time, and acquiring a plurality of eccentric values in the preset time;

based on the plurality of eccentricity values, it is detected whether foam in a washing tub of the laundry washing appliance is excessive.

2. The method of claim 1, wherein said detecting whether foam is excessive in a wash tub of the laundry washing appliance based on the plurality of eccentricity values comprises:

performing first sliding treatment on the eccentric values to obtain a plurality of first sliding values;

performing difference solving processing on the plurality of first sliding values to obtain a plurality of first difference values;

summing the plurality of first difference values to obtain a first summation value;

the first summation value is compared to a first preset value to determine if there is an excess of foam in the wash bowl.

3. The method of claim 2, wherein performing a first sliding process on the plurality of eccentricity values to obtain a plurality of first sliding values comprises:

and calculating the average value of two adjacent eccentric values in the plurality of eccentric values to obtain the plurality of first sliding values.

4. The method of claim 2, wherein the differencing the plurality of first sliding values to obtain a plurality of first differences comprises:

and calculating the difference value of two adjacent first sliding values in the plurality of first sliding values to obtain the plurality of first difference values.

5. The method of claim 2, wherein comparing the first summation value with a first preset value to determine whether there is an excess of foam in the wash drum comprises:

if the first summation value is less than the first preset value, determining that the foam in the washing drum is excessive.

6. The method of claim 6, wherein the method further comprises:

adjusting the rotation-to-stop ratio of the washing drum under the condition that the excessive foam in the washing drum is determined; or,

in case an excessive amount of foam within the washing drum is determined, controlling the laundry washing appliance to perform a defoaming procedure.

7. The method according to claim 2, wherein the method further comprises:

performing second sliding treatment on the plurality of first sliding values to obtain a plurality of second sliding values;

the performing a difference processing on the plurality of first sliding values to obtain a plurality of first difference values, including:

performing difference solving processing on the plurality of second sliding values to obtain a plurality of second difference values;

the summing processing is performed on the plurality of first differences to obtain a first summation value, including:

summing the plurality of second difference values to obtain a second sum value;

the comparing the first summation value with a first preset value to determine whether the foam in the washing drum is excessive, comprising:

comparing the second summation value with the second preset value to determine whether the foam in the washing drum is excessive, wherein the second preset value is smaller than the first preset value.

8. The method of claim 7, wherein comparing the second summation value with the second preset value to determine whether there is an excess of foam in the wash drum comprises:

if the second summation value is less than a second preset value, determining that the foam in the washing drum is excessive.

9. The method according to any one of claims 1 to 8, further comprising:

and denoising the plurality of eccentric values to remove abnormal values in the plurality of eccentric values.

10. A computer readable storage medium storing a computer program, characterized in that the computer program when executed by a processor implements the steps of the method according to any one of claims 1 to 9.