CN112575507A - Foam control method and device for washing machine - Google Patents
Foam control method and device for washing machine Download PDFInfo
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- CN112575507A CN112575507A CN202011321628.3A CN202011321628A CN112575507A CN 112575507 A CN112575507 A CN 112575507A CN 202011321628 A CN202011321628 A CN 202011321628A CN 112575507 A CN112575507 A CN 112575507A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F33/00—Control of operations performed in washing machines or washer-dryers
- D06F33/30—Control of washing machines characterised by the purpose or target of the control
- D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/04—Signal transfer or data transmission arrangements
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/22—Condition of the washing liquid, e.g. turbidity
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/18—Washing liquid level
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/20—Washing liquid condition, e.g. turbidity
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Abstract
A foam control method of a washing machine comprises the following steps: detecting parameters related to foam in the washing drum, and determining the height of the foam in the washing drum in real time according to the parameters related to the foam; if the foam height is larger than a first preset threshold value, starting a first defoaming procedure; if the foam height is less than the first predetermined threshold and greater than a second predetermined threshold, initiating a second defoaming procedure; wherein the first predetermined threshold is greater than the second predetermined threshold. The invention also provides a foam control device of the washing machine, a storage medium and the washing machine. By adopting the scheme of the invention, the foam amount of different positions in the cylinder can be measured, and the defoaming time can be accurately adjusted by combining the defoaming program.
Description
Technical Field
The present invention relates to the field of automatic control, and more particularly, to a method and apparatus for controlling bubbles in a washing machine, and a non-transitory computer readable medium.
Background
The detergent can generate a large amount of foam in the washing process of the washing machine, excessive foam is difficult to completely remove in rinsing, the use experience of a user is influenced, and meanwhile, the excessive foam can overflow out of the washing machine to bring potential safety hazards.
The foam quantity detection method adopted by the current commercial washing machine judges the foam content in the drum by acquiring the liquid level in the drum by using a liquid level sensor, and when the foam is more, the liquid level in the drum is higher. The liquid level sensor needs to be in direct contact with liquid for measurement, but due to the characteristics of foam, the foam is easy to remain on the liquid level sensor, and the accuracy of foam and liquid level judgment is influenced.
Patent CN108166219B discloses a method for detecting the content of foam in a cylinder by using a water level pressure sensor, but the influence of the change of the amount of foam on the pressure is small, and the detection precision is low. Patent CN109385811A discloses a method for determining the height of foam in a detergent dispensing box by measuring the time of receiving an echo signal, however, the patent only measures the condition of foam in the water inlet box and does not consider the condition of foam in the box. Patent CN107059353B discloses a method for detecting whether foam in a drum is excessive according to the current dehydration stage and torque value of the washing machine. But whether the foam is completely removed cannot be detected, and a small amount of foam residue still exists after the washing is finished. Therefore, there is a need in the art for a more accurate and intelligent control technique for the suds of a washing machine.
The above information disclosed in the background section is only for further understanding of the background of the invention and therefore it may contain information that does not form the prior art that is already known to a person of ordinary skill in the art.
Disclosure of Invention
The invention provides a method and a device for controlling foam of a washing machine, which can eliminate potential safety hazards caused by the fact that foam generated in the washing and rinsing processes of the washing machine overflows the washing machine, solve the problem that the time of a foam removing program is difficult to accurately control, and solve the problems of water and electricity waste, long washing time, unclean foam removing time and detergent residue; the problem that the liquid level sensor cannot accurately distinguish liquid level, foam and clothes amount and needs to be matched with a plurality of sensors to use can be solved, and the problem of high control cost is solved; the problem that when the clothes quantity in a washing drum of the washing machine is large or foams are distributed unevenly, the foam quantity is difficult to measure accurately, and misjudgment is easily caused can be solved.
To this end, the present invention provides a washing machine suds control method, a washing machine suds control device, a non-transitory computer readable medium, and a washing machine.
A first aspect of the present invention provides a foam control method of a washing machine, including: detecting parameters related to foam in the washing drum, and determining the height of the foam in the washing drum in real time according to the parameters related to the foam; if the foam height is larger than a first preset threshold value, starting a first defoaming procedure; if the foam height is less than the first predetermined threshold and greater than a second predetermined threshold, initiating a second defoaming procedure; wherein the first predetermined threshold is greater than the second predetermined threshold.
According to one embodiment of the invention, when the first defoaming program is operated, the height of the foam in the washing drum is monitored in real time, whether the foam height is reduced to the first preset threshold value is judged, and then whether the second defoaming program is started is determined.
According to one embodiment of the invention, when the foam height is less than a second predetermined threshold, if the washing machine rinsing time is more than a predetermined time, the washing machine finishes rinsing; if the rinsing time period of the washing machine is less than the predetermined time period, the rinsing process is continuously performed.
According to an embodiment of the invention, wherein the foam-related parameter in the washing drum is detected by an ultrasonic sensor.
According to one embodiment of the invention, the ultrasonic sensor is a phased array ultrasonic sensor.
According to one embodiment of the invention, the phased array ultrasonic sensor utilizes the interference principle of ultrasonic waves to control the emission angle of sound beams, and detects the parameters related to foam at four positions of the front wall, the rear wall, the left side wall and the right side wall of the inner barrel of the washing machine respectively according to the characteristic of foam adherence.
According to one embodiment of the invention, the ultrasonic sensor detects a foam-related parameter in the washing drum by measuring the intensity of the received ultrasonic echo signal.
According to an embodiment of the invention, the foam-related parameters comprise a height of foam, a height of a water level and a height of laundry in the washing tub.
According to one embodiment of the invention, when the intensity of the ultrasonic echo signal is within a first preset range, the reflected ultrasonic signal of the ultrasonic sensor comes from the foam layer of the washing drum; when the intensity of the ultrasonic echo signal is in a second preset range, the reflected ultrasonic signal of the ultrasonic sensor comes from the water layer of the washing drum; when the intensity of the ultrasonic echo signal is within a third preset range, the reflected ultrasonic signal of the ultrasonic sensor comes from the clothes layer of the washing drum.
According to one embodiment of the invention, when the intensity of the ultrasonic echo signal is within a first preset range, calculating the foam height; when the intensity of the ultrasonic echo signal is within a first preset range, calculating the height of the water level; when the intensity of the ultrasonic echo signal is within a third preset range, calculating the height of the clothes; the washing machine determines the height of the foam in the washing drum in real time according to the calculated height of the foam, the height of the water level and the height of the clothes so as to correspond to different rinsing processes.
According to an embodiment of the invention, the first defoaming procedure is used for executing defoaming control when the foam in the washing drum reaches an overflow critical value; the second defoaming procedure is used for executing defoaming control of foam residue in the washing drum.
According to an embodiment of the present invention, the phased array ultrasonic sensor includes a plurality of sensor arrays, an amplitude phase controller, and a signal processing circuit, wherein the sensor array includes a plurality of independent sensor array elements for exciting ultrasonic waves, the amplitude phase controller is configured to change a delay law and ultrasonic intensity of excitation of each array element, and change an orientation of an ultrasonic wave beam, so as to measure parameters related to bubbles in the washing drum in multiple directions, and the signal processing circuit is configured to: and judging whether the echo signal comes from foam reflection or water surface reflection or clothing reflection according to different reflected echo intensities of the ultrasonic waves by different media.
A second aspect of the invention provides a washing machine suds control device comprising one or more processors and a non-transitory computer readable storage medium having stored thereon program instructions, the one or more processors being configured to implement the washing machine suds control method of the invention when the program instructions are executed by the one or more processors.
A third aspect of the invention provides a non-transitory computer readable storage medium having stored thereon program instructions which, when executed by one or more processors, are used to implement the washing machine suds control method of the invention.
A fourth aspect of the present invention provides a washing machine, which employs the washing machine suds control method of the present invention, or comprises the washing machine suds control device of the present invention, or has a non-transitory computer-readable storage medium according to the present invention.
The invention provides a method for detecting foam in a barrel, which uses a phased array ultrasonic sensor and utilizes the interference principle of ultrasonic waves to flexibly adjust the measurement angle and realize the omnibearing measurement in the barrel; meanwhile, the liquid level height and the foam height are effectively distinguished by utilizing the difference of the reflection intensity of different media to ultrasonic waves, and the foam amount in the barrel is accurately measured. The measured foam quantity data is utilized, the defoaming duration is accurately controlled by combining the defoaming program, and the phenomena of water, electricity waste and overlong washing time caused by foam residue or overlong defoaming time due to incomplete defoaming are effectively avoided.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a block diagram of components related to a suds control in a washing machine according to an exemplary embodiment of the present invention.
Fig. 2 is a schematic diagram of a phased array ultrasonic sensor apparatus according to an exemplary embodiment of the present invention.
Fig. 3 is a flowchart of an inner content detection of a washing machine tub according to an exemplary embodiment of the present invention.
Fig. 4 is a flowchart of defoaming in a washing machine in rinsing according to an exemplary embodiment of the present invention.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
As used herein, the terms "first," "second," and the like may be used to describe elements of exemplary embodiments of the invention. These terms are only used to distinguish one element from another element, and the inherent features or order of the corresponding elements and the like are not limited by the terms. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms, such as those defined in commonly used dictionaries, are to be interpreted as having a meaning that is consistent with their context in the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Those skilled in the art will understand that the devices and methods of the present invention described herein and illustrated in the accompanying drawings are non-limiting exemplary embodiments and that the scope of the present invention is defined solely by the claims. Features illustrated or described in connection with one exemplary embodiment may be combined with features of other embodiments. Such modifications and variations are intended to be included within the scope of the present invention.
Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, a detailed description of related known functions or configurations is omitted to avoid unnecessarily obscuring the technical points of the present invention. In addition, the same reference numerals refer to the same circuits, modules or units throughout the description, and repeated descriptions of the same circuits, modules or units are omitted for brevity.
Further, it should be understood that one or more of the following methods or aspects thereof may be performed by at least one control system, control unit, or controller. The term "control unit", "controller", "control module" or "main control module" may refer to a hardware device including a memory and a processor, and the term "laundry machine" may refer to a device similar to a washing machine. The memory or computer-readable storage medium is configured to store program instructions, while the processor is specifically configured to execute the program instructions to perform one or more processes that will be described further below. Moreover, it is to be appreciated that the following methods may be performed by including a processor in conjunction with one or more other components, as will be appreciated by one of ordinary skill in the art.
Fig. 1 is a block diagram of components related to a suds control in a washing machine according to an exemplary embodiment of the present invention.
The components in fig. 1 are labeled: wherein, 1 controller circuit, 2 front panels, 3 foam detection devices, 4 clothes taking and placing doors, 5 inner barrel front walls, 6 inner barrels, 7 outer barrels, 8 transmission devices, 9 belts, 10 motors, 11 drainage pumps, 12 drainage pipes and 13 temperature sensors.
As shown in fig. 1, the device comprises a foam detection device 3, an inner barrel 6, an outer barrel 7 and a control circuit 1. The foam detection device is arranged on a fixing mechanism at the top end 5 of the front wall of the inner barrel of the washing machine, a phased array ultrasonic sensor is used in the washing and rinsing processes of the washing machine, the emission angle of an acoustic beam is controlled by utilizing the interference principle of ultrasonic waves, and the foam quantity of the front wall, the rear wall, the left side wall and the right side wall of the inner barrel of the washing machine is respectively measured or detected according to the wall-attached adsorption characteristic of foam. The foam detection device can be a phased array ultrasonic sensor or a plurality of single ultrasonic sensors.
Fig. 2 is a schematic diagram of a phased array ultrasonic sensor apparatus according to an exemplary embodiment of the present invention.
The components in fig. 2 are: 14 ultrasonic sensor array elements, 15 sensor arrays, 16 amplitude and phase controllers and 17 signal processing circuits.
As shown in fig. 2, a sensor array 15 includes a plurality of independent sensor elements 14, and the delay law and the ultrasonic intensity excited by each sensor element are changed by an amplitude phase controller 16, so as to change the direction of the ultrasonic wave beam, thereby measuring the amount of foam in the tub (i.e. the parameters related to the foam in the washing tub) in multiple directions. The device distinguishes foam, water level and clothes by measuring the intensity of ultrasonic echo signals. According to the different reflected echo intensities of the ultrasonic waves by different media, the signal processing circuit 17 judges whether the echo signal comes from foam reflection, water surface reflection or clothes reflection by judging the current signal intensity. The signal processing circuit calculates the distance between the sensor and the medium according to the time difference delta t between the transmitting signal and the receiving signal and the temperature in the barrel measured by the temperature sensor 13, and the height of the foam in the barrel is obtained. The time node of ultrasonic wave emission is t0The node of the reception time at which the reflected sound wave is received is t1The transmission time of the sound wave is t1-t0, and the distance between the object and the probe is t
Wherein the propagation velocity v of the ultrasonic wave is v ═ v0+0.607T, T being the temperature in the tank measured by the temperature sensor 13, v0Is the speed of sound at zero degrees celsius.
Fig. 3 is a flowchart of an inner content detection of a washing machine tub according to an exemplary embodiment of the present invention. As shown in FIG. 3, the signal processing circuit receives an echo signal with a strength AnWhen the signal intensity falls within a first predetermined range A1～A2When the reflected acoustic signal comes from the foam layer; when the intensity of the received echo signal belongs to a second preset range A2～A3When the reflected acoustic signal comes from the water layer; when the intensity of the received echo signal belongs to a third preset range A3～A4When the reflected sound wave signal comes from the clothes; if the received echo signal intensity is less than A1Or greater than A3If yes, discarding the measurement data for re-measurement; wherein the critical value A1、A2、A3Is repeatedly measured by experiments. As shown in FIG. 3, examineThe detected position height information of the foam, the water level and the clothes in the barrel is sent to a main control module of the washing machine so as to correspond to different rinsing processes. In fig. 3, the detection of the first range, the second range, and the third range is performed in this order.
Fig. 4 is a flowchart of defoaming in a washing machine in rinsing according to an exemplary embodiment of the present invention. As shown in figure 4 of the drawings,
firstly, when the washing machine is started, a rinsing program is executed;
then, the washing machine system detects the foam amount in the washing machine, namely detects the parameters related to the foam in the washing cylinder, and determines the foam amount in the washing cylinder in real time according to the parameters related to the foam; according to one embodiment of the invention, the amount of foam is the height of the foam;
then, judging whether the foam height in the washing cylinder is greater than a first preset threshold value, and if the foam height is greater than the first preset threshold value, starting a first defoaming program; when a first defoaming program is operated, monitoring the height of foam in the washing drum in real time, judging whether the foam height is reduced to the first preset threshold value or not, and then determining whether a second defoaming program is started or not;
if the foam height is smaller than a first preset threshold value, the foam height in the washing drum is judged to be larger than a second preset threshold value, and if the foam height is smaller than the first preset threshold value and larger than the second preset threshold value, a second defoaming program is started;
when the foam height is smaller than a second preset threshold value, if the rinsing time of the washing machine is longer than a preset time, the washing machine finishes rinsing; if the rinsing time period of the washing machine is less than the predetermined time period, the rinsing process is continuously performed.
The first defoaming program is used for executing defoaming control when the foam in the washing drum reaches an overflow critical value; the second defoaming procedure is used for executing defoaming control of foam residue in the washing drum.
According to an embodiment of the present invention, as shown in fig. 4, when the height of the foam is greater than a first preset threshold (i.e., threshold 1), which indicates that the foam in the bucket reaches an overflow threshold at this time, a first defoaming procedure (i.e., defoaming procedure 1) is started, and the foam is waited to drop to a second preset threshold (i.e., threshold 2); when the foam height is smaller than the threshold value 1 and larger than the threshold value 2, indicating that foam residue exists in the barrel at the moment, starting a second defoaming program (namely the defoaming program 2), when the foam height is smaller than the threshold value 2, no foam residue exists in the surface barrel, executing a rinsing process at the moment until the rinsing time length is equal to the set time length, and finishing the rinsing process.
The present invention also provides, in accordance with one or more embodiments of the invention, a non-transitory computer-readable storage medium having stored thereon program instructions which, when executed by one or more processors, are used to implement the methods or processes of the various embodiments of the invention as set forth above.
The present invention also provides, in accordance with one or more embodiments of the present invention, a washing machine suds control device comprising one or more processors and a non-transitory computer-readable storage medium having stored thereon program instructions, which, when executed by the one or more processors, are configured to implement the methods or processes of the various embodiments of the present invention as set forth above.
According to one or more embodiments of the invention, the invention also comprises a washing machine, which employs the method of the invention as described above, or which comprises the washing machine suds control device of the invention, or which has the non-transitory computer-readable storage medium as described above.
In accordance with one or more embodiments of the present invention, the washing machine suds control method of the present invention can be implemented using encoded instructions (e.g., computer and/or machine readable instructions) stored on a non-transitory computer and/or machine readable medium (e.g., hard disk drive, flash memory, read-only memory, compact disk, digital versatile disk, cache, random access memory, and/or any other storage device or storage disk) in which information is stored for any period of time (e.g., extended time periods, permanent, transient instances, temporary cache, and/or information cache) as described above with respect to the control method of the present invention. As used herein, the term "non-transitory computer-readable medium" is expressly defined to include any type of computer-readable storage device and/or storage disk and to exclude propagating signals and to exclude transmission media.
According to one or more embodiments of the present invention, a main control system or control module of a washing machine may include one or more processors and may also include a non-transitory computer readable medium therein. In particular, a microcontroller MCU may be included in the control device (main control system or control module) of the electric heating protection of the washing machine, which is disposed in the washing machine, for various operations and implementing functions of the washing machine for the control of the electric heating protection of the washing machine. The processor of the washing machine with control of electrical heating protection may be such as, but not limited to, one or more single-core or multi-core processors. The processor(s) may include any combination of general-purpose processors and special-purpose processors (e.g., graphics processors, application processors, etc.). The processor may be coupled thereto and/or may include a memory/storage device and may be configured to execute instructions stored in the memory/storage device to implement various applications and/or operating systems running on the controller in accordance with the present invention.
Aiming at the problems that foam in the cylinder is not uniformly distributed and is difficult to measure by a single liquid level sensor in the washing process, the invention utilizes a phased array ultrasonic sensor to measure the foam amount at different positions in the cylinder by adjusting the emission angle of ultrasonic waves, and combines a defoaming program to accurately adjust the defoaming time. In addition, the invention effectively distinguishes foam and liquid level height by measuring the intensity of ultrasonic echo signals by utilizing the difference of different media on the reflection intensity of ultrasonic waves, and obtains more accurate foam amount data in the barrel.
The drawings referred to above and the detailed description of the invention, which are exemplary of the invention, serve to explain the invention without limiting the meaning or scope of the invention as described in the claims. Accordingly, modifications may be readily made by those skilled in the art from the foregoing description. Further, those skilled in the art may delete some of the constituent elements described herein without deteriorating the performance, or may add other constituent elements to improve the performance. Further, the order of the steps of the methods described herein may be varied by one skilled in the art depending on the environment of the process or apparatus. Therefore, the scope of the present invention should be determined not by the embodiments described above but by the claims and their equivalents.
While the invention has been described in connection with what is presently considered to be practical embodiments, it is to be understood that the invention is not to be limited to the disclosed embodiments, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (15)
1. A foam control method of a washing machine comprises the following steps:
detecting parameters related to foam in the washing drum, and determining the height of the foam in the washing drum in real time according to the parameters related to the foam;
if the foam height is larger than a first preset threshold value, starting a first defoaming procedure;
if the foam height is less than the first predetermined threshold and greater than a second predetermined threshold, initiating a second defoaming procedure;
wherein the first predetermined threshold is greater than the second predetermined threshold.
2. The method of claim 1, wherein while running the first defoaming procedure, the height of the foam in the washing drum is monitored in real time and it is determined whether the foam height has dropped to the first predetermined threshold, and then it is determined whether to initiate a second defoaming procedure.
3. The method according to claim 1 or 2, wherein, when the foam height is less than a second predetermined threshold,
if the rinsing time of the washing machine is longer than the preset time, the washing machine finishes rinsing;
if the rinsing time period of the washing machine is less than the predetermined time period, the rinsing process is continuously performed.
4. The method of claim 1, wherein the foam-related parameter within the wash drum is detected by an ultrasonic sensor.
5. The method of claim 4, the ultrasonic sensor being a phased array ultrasonic sensor.
6. The method of claim 5, wherein the phased array ultrasonic sensor is used for controlling the emission angle of the sound beam by using the interference principle of ultrasonic waves, and detecting the parameters related to the foam at four positions of the front wall, the rear wall, the left side wall and the right side wall of the inner barrel of the washing barrel respectively according to the adherence and adsorption characteristics of the foam.
7. The method of claim 4, wherein the ultrasonic sensor detects a foam-related parameter in the wash cylinder by measuring an intensity of the received ultrasonic echo signal.
8. The method of claim 7, wherein the foam-related parameters include a height of foam, a height of a water level, and a height of laundry in the washing tub.
9. The method of claim 8, wherein,
when the intensity of the ultrasonic echo signal is within a first preset range, the reflected ultrasonic wave signal of the ultrasonic sensor comes from a foam layer of the washing drum;
when the intensity of the ultrasonic echo signal is in a second preset range, the reflected ultrasonic signal of the ultrasonic sensor comes from the water layer of the washing drum;
when the intensity of the ultrasonic echo signal is within a third preset range, the reflected ultrasonic signal of the ultrasonic sensor comes from the clothes layer of the washing drum.
10. The method of claim 9, wherein,
when the intensity of the ultrasonic echo signal is within a first preset range, calculating the height of the foam;
when the intensity of the ultrasonic echo signal is within a first preset range, calculating the height of the water level;
when the intensity of the ultrasonic echo signal is within a third preset range, calculating the height of the clothes;
the washing machine determines the height of the foam in the washing drum in real time according to the calculated height of the foam, the height of the water level and the height of the clothes so as to correspond to different rinsing processes.
11. The method of claim 1, wherein the first defoaming procedure is used to perform defoaming control when foam in the washing drum reaches an overflow threshold; the second defoaming procedure is used for executing defoaming control of foam residue in the washing drum.
12. The method of claim 6, the phased array ultrasonic sensor comprising a plurality of sensor arrays, an amplitude and phase controller, a signal processing circuit, wherein,
the sensor array comprises a plurality of independent sensor array elements for exciting ultrasonic waves,
the amplitude phase controller is used for changing the time delay rule and the ultrasonic intensity excited by each array element and changing the direction of ultrasonic wave beams so as to measure the parameters related to the foam in the washing cylinder in multiple directions,
the signal processing circuit is configured to: and judging whether the echo signal comes from foam reflection or water surface reflection or clothing reflection according to different reflected echo intensities of the ultrasonic waves by different media.
13. A washing machine suds control device comprising one or more processors and a non-transitory computer readable storage medium having stored thereon program instructions, the one or more processors for implementing the method according to any of claims 1-12 when the program instructions are executed by the one or more processors.
14. A non-transitory computer-readable storage medium having stored thereon program instructions which, when executed by one or more processors, are operable to implement the method of any one of claims 1-12.
15. A washing machine employing the method of any one of claims 1-12, or comprising the apparatus of claim 13, or having the non-transitory computer-readable storage medium of claim 14.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114027754A (en) * | 2021-11-01 | 2022-02-11 | 珠海格力电器股份有限公司 | Control method and device of dish washing machine, storage medium and dish washing machine |
| CN114481530A (en) * | 2022-01-28 | 2022-05-13 | Tcl家用电器（合肥）有限公司 | Foam eliminating method and device, storage medium and washing machine |
| WO2022156435A1 (en) * | 2021-01-22 | 2022-07-28 | 青岛海尔滚筒洗衣机有限公司 | Defoaming method for washing device |
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| WO2022156435A1 (en) * | 2021-01-22 | 2022-07-28 | 青岛海尔滚筒洗衣机有限公司 | Defoaming method for washing device |
| CN114027754A (en) * | 2021-11-01 | 2022-02-11 | 珠海格力电器股份有限公司 | Control method and device of dish washing machine, storage medium and dish washing machine |
| CN114027754B (en) * | 2021-11-01 | 2023-11-14 | 珠海格力电器股份有限公司 | Dish washer control method and device, storage medium and dish washer |
| CN114481530A (en) * | 2022-01-28 | 2022-05-13 | Tcl家用电器（合肥）有限公司 | Foam eliminating method and device, storage medium and washing machine |
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