CN110938968A - Dehydration control method and device, computer readable storage medium and washing machine - Google Patents
Dehydration control method and device, computer readable storage medium and washing machine Download PDFInfo
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Abstract
The invention provides a dehydration control method and device, a computer readable storage medium and a washing machine, wherein the dehydration control method comprises the following steps: when the washing machine executes a dehydration program, acquiring the vibration speed and the vibration acceleration of the outer barrel of the washing machine in the vibration direction at the current moment; determining the vibration displacement of the outer barrel in the vibration direction after the outer barrel exceeds the current moment for a preset time according to the vibration speed and the vibration acceleration; and determining whether the washing machine collides with the barrel according to the vibration displacement. According to the technical scheme, the accuracy and the timeliness of the judgment result of whether the washing machine has a tub collision event can be effectively improved.
Description
Technical Field
The invention relates to the technical field of washing machines, in particular to a dehydration control method, a dehydration control device, a computer readable storage medium and a washing machine.
Background
Currently, when a washing machine performs a spin-drying process, an acceleration signal of an outer tub of the washing machine in a vibration direction is detected using an MEMS (Micro-Electro-Mechanical System) sensor and converted into a displacement signal of the outer tub through two integration operations, so as to perform vibration detection and water replenishment control of the washing machine according to the displacement signal. However, considering that the gap between the outer tub of the washing machine and the cabinet thereof is small, in order to prevent the outer tub from colliding with the cabinet when the washing machine is dehydrating at a high speed, a shutdown protection mechanism for large displacement of the outer tub needs to be added, for example, when the gap between the outer tub of the washing machine and the cabinet is 5mm, and the set displacement protection value is 3mm, the washing machine is controlled to be shut down when the displacement of the outer tub is detected to be 3 mm.
However, there is a time delay in the signal processing process of the washing machine, and at the same time, the communication from the main control board of the washing machine to the motor of the washing machine also requires time, so if the vibration displacement is calculated to reach 3mm through the acceleration signal and then the washing machine is stopped, the displacement of the outer tub of the washing machine actually exceeds 3mm, and there is a danger of tub collision.
Therefore, a new scheme for detecting vibration displacement of a washing machine is needed to avoid the occurrence of tub collision due to signal processing delay.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
Therefore, an object of the present invention is to provide a new dehydration control method, which can effectively improve the accuracy of the judgment result of whether the washing machine has a tub collision event.
Another object of the present invention is to provide a dehydration control apparatus, a computer readable storage medium, and a washing machine, accordingly.
To achieve at least one of the above objects, according to a first aspect of the present invention, there is provided a dehydration control method including: when the washing machine executes a dehydration program, acquiring the vibration speed and the vibration acceleration of the outer barrel of the washing machine in the vibration direction at the current moment; determining the vibration displacement of the outer barrel in the vibration direction after the outer barrel exceeds the current moment for a preset time according to the vibration speed and the vibration acceleration; and determining whether the washing machine collides with the barrel according to the vibration displacement.
In the technical scheme, the current vibration speed and vibration acceleration of the outer barrel of the washing machine in the vibration direction at each current moment are calculated in real time in the process of executing the dehydration program by the washing machine, thereby realizing accurate prediction of vibration displacement within a period of time according to the current vibration speed and vibration acceleration, namely, the vibration displacement after the preset time from the current moment in the time sequence, and is further used for measuring whether the washing machine has a tub collision event, so that, can effectively avoid the condition that the barrel collision judgment result is inaccurate according to the current vibration displacement caused by signal processing, communication delay and the like, namely, whether the washing machine has a tub collision event can be judged more accurately by predicting the vibration displacement of the outer tub of the washing machine in the vibration direction for a period of time in the future, so as to effectively improve the accuracy and timeliness of the judgment result of whether the washing machine has a tub collision event.
In the above technical solution, preferably, the determining a vibration displacement amount of the outer tub in the vibration direction after exceeding the current time by a preset time according to the vibration speed and the vibration acceleration includes: determining the vibration displacement according to a preset displacement calculation formula, wherein the preset displacement calculation formula is as follows:
wherein S represents the amount of vibration displacement, t1Representing said current time, △ t representing said preset time, v1Represents the vibration speed and
a1representing the vibration acceleration and a represents an acceleration variable.
In the technical scheme, the vibration displacement of the outer barrel of the washing machine within the preset time after the vibration speed and the vibration acceleration at the current moment are obtained can be determined in a mode of calculating the coverage area of the speed-time curve within a period of time, so that the accurate vibration displacement can be obtained quickly and timely.
In the above technical solution, preferably, t is measured from the point0To the t1The time interval of (a) is in the range of 8 seconds to 12 seconds.
In any one of the above technical solutions, preferably, the determining whether the washing machine collides with the tub according to the vibration displacement includes: judging whether the vibration displacement is larger than a preset displacement threshold value or not; when the vibration displacement is judged to be larger than the preset displacement threshold, determining that the washing machine collides with the barrel; and when the vibration displacement is not larger than the preset displacement threshold value, determining that the washing machine does not collide the barrel.
In the technical scheme, whether the tub collision of the washing machine occurs or not can be determined in a mode that the vibration displacement of the predicted outer tub of the washing machine after the preset time from the current moment is larger than a preset displacement threshold, if the vibration displacement is larger than the preset displacement threshold, the tub collision of the washing machine can be determined, otherwise, the tub collision of the washing machine is determined, namely, the accuracy of the judgment result of whether the tub collision of the washing machine occurs or not can be ensured by taking the safety displacement (namely the preset displacement threshold) of the outer tub, which can ensure that the tub collision of the washing machine does not occur, as a standard for measuring whether the predicted vibration displacement is within the range of a tub collision safety line, so that the probability of the occurrence of the tub collision of the washing machine during the dewatering process is effectively reduced, and the use experience of a user is improved.
In any one of the above technical solutions, preferably, when it is determined that the washing machine collides with the tub, the spin-drying control method further includes: and controlling the washing machine to finish the dehydration program or controlling to reduce the dehydration rotating speed adopted when the washing machine executes the dehydration program currently.
In the technical scheme, when the situation that the washing machine collides with the barrel is judged, in order to ensure the use safety and reliability of the washing machine, relevant protective measures can be taken in time to achieve the purpose of preventing the vibration of the outer barrel from exceeding the protective standard, thereby ensuring the service life of the product and improving the use experience of a user, preferably, the protective measures can directly enable the washing machine to quit a dehydration program for complete shutdown protection, or the vibration of the outer barrel can be properly weakened in a speed reduction mode on the basis of the current dehydration rotating speed of the washing machine, so that whether the barrel collision event occurs can be continuously remeasured by predicting the vibration displacement of the outer barrel of the washing machine in a period of time in the future.
In any one of the above technical solutions, preferably, the vibration direction includes an X-axis direction, a Y-axis direction, and a Z-axis direction in a spatial rectangular coordinate system.
In the technical scheme, the vibration displacement of the outer barrel of the washing machine in one or more vibration directions of the X-axis direction, the Y-axis direction and the Z-axis direction of the space rectangular coordinate system can be predicted specifically, and the accuracy of obtaining the vibration displacement is ensured.
In any of the above technical solutions, preferably, the preset time has a value range of: 0.25 second to 1 second.
In the technical scheme, the preset time can be an empirical value to be more suitable for a specific vibration generation scene in the dewatering process of the washing machine, so that the scheme is ensured to be suitable for the aspect of dewatering vibration control of most or all washing machines, and the applicability of the scheme is improved.
According to a second aspect of the present invention, there is provided a dehydration control apparatus comprising: the washing machine comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring the vibration speed and the vibration acceleration of an outer barrel of the washing machine in the vibration direction at the current moment when the washing machine executes a dehydration program; the determining module is used for determining the vibration displacement of the outer barrel in the vibration direction after the outer barrel exceeds the current moment for preset time according to the vibration speed and the vibration acceleration; and the processing module is used for determining whether the washing machine collides with the barrel according to the vibration displacement.
In the technical scheme, the current vibration speed and vibration acceleration of the outer barrel of the washing machine in the vibration direction at each current moment are calculated in real time in the process of executing the dehydration program by the washing machine, thereby realizing accurate prediction of vibration displacement within a period of time according to the current vibration speed and vibration acceleration, namely, the vibration displacement after the preset time from the current moment in the time sequence, and is further used for measuring whether the washing machine has a tub collision event, so that, can effectively avoid the condition that the barrel collision judgment result is inaccurate according to the current vibration displacement caused by signal processing, communication delay and the like, namely, whether the washing machine has a tub collision event can be judged more accurately by predicting the vibration displacement of the outer tub of the washing machine in the vibration direction for a period of time in the future, so as to effectively improve the accuracy and timeliness of the judgment result of whether the washing machine has a tub collision event.
According to a third aspect of the present invention, there is provided a dehydration control apparatus comprising: a processor; a memory for storing executable instructions of the processor, wherein the processor is configured to implement the steps of the dehydration control method according to any of the above aspects of the first aspect when executing the executable instructions stored in the memory.
According to a fourth aspect of the present invention, a computer-readable storage medium is proposed, on which a computer program is stored, which computer program, when being executed by the processor, realizes the steps of the dehydration control method according to any one of the above-mentioned aspects of the first aspect.
According to a fifth aspect of the present invention, there is provided a washing machine comprising the dehydration control apparatus as described in any one of the second and third aspects above.
In the above technical solution, preferably, the washing machine includes a drum washing machine, a pulsator washing machine, and the like.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 shows a schematic flow diagram of a dehydration control method of an embodiment of the present invention;
FIG. 2 shows a schematic diagram of the amount of vibration displacement for an embodiment of the present invention;
FIG. 3 is a schematic block diagram showing a dehydration control apparatus according to a first embodiment of the present invention;
fig. 4 shows a schematic block diagram of a dehydration control apparatus according to a second embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Example one
The dehydration control method according to the embodiment of the present invention will be specifically described with reference to fig. 1 and 2.
As shown in fig. 1, the dehydration control method according to the embodiment of the present invention specifically includes the following steps:
step S102, when the washing machine executes the dehydration program, obtaining the vibration speed and the vibration acceleration of the outer barrel of the washing machine in the vibration direction at the current moment.
The vibration direction comprises an X-axis direction, a Y-axis direction and a Z-axis direction in a space rectangular coordinate system.
That is to say, the vibration displacement of the outer barrel of the washing machine in one or more vibration directions of the X-axis direction, the Y-axis direction and the Z-axis direction of the space rectangular coordinate system can be predicted specifically, and the accuracy of obtaining the vibration displacement is ensured; preferably, it may be in the X-axis direction and/or the Y-axis direction.
And step S104, determining the vibration displacement of the outer barrel in the vibration direction after the outer barrel exceeds the current moment for a preset time according to the vibration speed and the vibration acceleration.
Wherein, the value range of the preset time is as follows: 0.25-1 second, specifically, the preset time can be an empirical value to be more suitable for various specific scenes of vibration generation in the dehydration process of the washing machine, so that the scheme is ensured to be suitable for the aspect of dehydration vibration control of most or all washing machines, and the applicability of the scheme is improved; further, the specific value of the preset time may be selected according to specific inherent properties such as the product type of the washing machine.
And step S106, determining whether the washing machine collides with the barrel according to the vibration displacement.
In this embodiment, during the washing machine performing the spin-drying process, the current vibration speed and vibration acceleration of the tub of the washing machine in the vibration direction at each current moment are calculated in real time, thereby realizing accurate prediction of vibration displacement within a period of time according to the current vibration speed and vibration acceleration, namely, the vibration displacement after the preset time from the current moment in the time sequence, and is further used for measuring whether the washing machine has a tub collision event, so that, can effectively avoid the condition that the barrel collision judgment result is inaccurate according to the current vibration displacement caused by signal processing, communication delay and the like, namely, whether the washing machine has a tub collision event can be judged more accurately by predicting the vibration displacement of the outer tub of the washing machine in the vibration direction for a period of time in the future, so as to effectively improve the accuracy and timeliness of the judgment result of whether the washing machine has a tub collision event.
Further, step S104 in the above embodiment may be specifically executed as: determining the vibration displacement according to a preset displacement calculation formula, wherein the preset displacement calculation formula is as follows:
wherein S represents the vibrationAmount of displacement, t1Representing said current time, △ t representing said preset time, v1Represents the vibration speed and
a1representing the vibration acceleration and a represents an acceleration variable.
In this embodiment, the vibration displacement within the preset time after the outer tub of the washing machine obtains the vibration speed and the vibration acceleration at the current moment can be determined in a manner of calculating the coverage area of the speed-time curve within a period of time, so as to scientifically, rapidly and timely obtain the accurate vibration displacement.
In particular, from said t0To the t1The time interval of (d) may preferably range from 8 seconds to 12 seconds, and it is understood that t0Is located at the current time t in time sequence1A previous moment from t0To t1The integral of the acceleration variable a can obtain the current time t1Vibration velocity v of1(ii) a Of course from said t0To the t1The value of the time interval can also be other suitable values according to the actual situation.
Further, in one embodiment of the present invention, as shown in FIG. 2, for the current time t1Vibration speed v of outer tub of washing machine in vibration direction1And vibration acceleration a1Wherein t can be obtained by providing an acceleration detector on the washing machine1Vibration acceleration a of time1I.e. the vibration velocity v1At t1The slope of the time curve can be further used for solving the acceleration variable which is the slope of the vibration speed in the speed-time curve in the prior art within a period of time (namely t)0To t1Time period) to calculate the vibration speed at the current time.
When prediction beyond the current time t is required1When the vibration displacement of the outer tub of the washing machine in the vibration direction after the preset time △ t is reached, the current time t is obtained1Vibration velocity v of1And vibration acceleration a1T of0To t1Calculating a velocity-time curve at (t) with time period as a reference0+ △ t) to (t)1The coverage area of the + △ t) time period to obtain the vibration displacement, specifically including the area of two parts, actually generated (t)0+ △ t) to t1Area within time period, i.e. by twice integrating the acceleration variable
In such a way that the aforementioned area, and a future period of time t, are obtained1To (t)1Predicted area within + △ t), for t1To (t)1The area in the + △ t) period can be obtained by finding the trapezoidal area, i.e., (2 × v)1+a1X Δ t) x Δ t x 1/2, and the vibration displacement amount S can be obtained by addition.
Further, step S106 in the above embodiment may be specifically executed as: judging whether the vibration displacement is larger than a preset displacement threshold value or not; when the vibration displacement is judged to be larger than the preset displacement threshold, determining that the washing machine collides with the barrel; and when the vibration displacement is not larger than the preset displacement threshold value, determining that the washing machine does not collide the barrel.
In this embodiment, it may be specifically determined whether the washing machine has a tub collision event by a manner that a predicted vibration displacement of the outer tub of the washing machine after a preset time from the current time is greater than a preset displacement threshold, if the vibration displacement is greater than the preset displacement threshold, it may be determined that the washing machine has a tub collision event, otherwise, it is determined that the washing machine has not a tub collision event, that is, by using a safety displacement (that is, a preset displacement threshold) of the outer tub that can ensure that the washing machine does not have a tub collision event as a criterion for measuring whether the predicted vibration displacement is within a tub collision safety line range, accuracy of a result of determining whether the washing machine has a tub collision can be ensured, so as to effectively reduce a probability of the tub collision event occurring when the washing machine performs a spin-drying procedure, and improve user experience.
The value of the preset displacement threshold value can be determined according to specific washing machine products and the rotating speed gear of the outer barrel of the current washing machine in the dewatering stage, so that whether the barrel collision occurs or not is judged more accurately and is fit with the actual situation.
Further, in the above embodiment, when the result of the step S106 is that it is determined that the washing machine has a tub crash, the spin-drying control method may further include: and controlling the washing machine to finish the dehydration program or controlling to reduce the dehydration rotating speed adopted when the washing machine executes the dehydration program currently.
In this embodiment, when it is determined that the washing machine collides with the tub, in order to ensure the safety and reliability of the use of the washing machine, relevant protective measures may be taken in time to achieve the purpose of preventing the vibration of the outer tub from exceeding the protection standard, thereby ensuring the service life of the product and improving the use experience of the user, for the protective measures, preferably, the washing machine may be directly quit the dehydration program for a relatively thorough shutdown protection, or the vibration of the outer tub may be appropriately attenuated by performing a speed reduction on the basis of the current dehydration rotation speed of the washing machine, so that it is possible to continuously re-measure whether the tub collision event occurs by predicting the vibration displacement of the outer tub of the washing machine in a future period of time, that is, the step S102 to the step S106 are performed again.
Further, in the above embodiment, when the result of the step S106 is that it is determined that the washing machine has a tub crash, the spin-drying control method may further include: a barrel crash alert signal is emitted, such as in the form of a sound and/or light, to alert the user.
Further, in the above embodiment, when the result of the step S106 is that it is determined that the washing machine has a tub crash, the spin-drying control method may further include: the washing machine is controlled to execute the clothes shaking-up program so as to correct the eccentric condition of the clothes in the washing machine and help to reduce the vibration of the outer barrel of the washing machine.
Further, in the above embodiment, when the result of the step S106 is that it is determined that the washing machine has not collided with the tub, the spin-drying control method may further include: and controlling the washing machine to keep the dehydration rotating speed adopted when the dehydration program is currently executed or controlling and increasing the dehydration rotating speed adopted when the washing machine is currently executed to ensure the dehydration effect of the washing machine.
Based on the same inventive concept, the embodiment of the invention also provides a dehydration control device corresponding to the method in the first embodiment, which is shown in the second embodiment.
Example two
As shown in fig. 3, the dehydration control apparatus 30 according to an embodiment of the present invention includes: an acquisition module 302, a determination module 304, and a processing module 306.
The obtaining module 302 is configured to obtain a vibration speed and a vibration acceleration of an outer tub of the washing machine in a vibration direction at a current moment when the washing machine executes a spin-drying process; the determining module 304 is configured to determine a vibration displacement amount of the outer tub in the vibration direction after exceeding the current time by a preset time according to the vibration speed and the vibration acceleration; the processing module 306 is configured to determine whether the washing machine collides with the tub according to the vibration displacement.
In this embodiment, during the washing machine performing the spin-drying process, the current vibration speed and vibration acceleration of the tub of the washing machine in the vibration direction at each current moment are calculated in real time, thereby realizing accurate prediction of vibration displacement within a period of time according to the current vibration speed and vibration acceleration, namely, the vibration displacement after the preset time from the current moment in the time sequence, and is further used for measuring whether the washing machine has a tub collision event, so that, can effectively avoid the condition that the barrel collision judgment result is inaccurate according to the current vibration displacement caused by signal processing, communication delay and the like, namely, whether the washing machine has a tub collision event can be judged more accurately by predicting the vibration displacement of the outer tub of the washing machine in the vibration direction for a period of time in the future, so as to effectively improve the accuracy and timeliness of the judgment result of whether the washing machine has a tub collision event.
Further, the determining module 304 in the foregoing embodiment is specifically configured to: determining the vibration displacement according to a preset displacement calculation formula, wherein the preset displacement calculation formula is as follows:
wherein S represents the amount of vibration displacement, t1Representing said current time, △ t representing said preset time, v1Represents the vibration speed and
a1representing the vibration acceleration and a represents an acceleration variable.
Further, the processing module 306 in the foregoing embodiment is further specifically configured to: judging whether the vibration displacement is larger than a preset displacement threshold value or not; when the vibration displacement is judged to be larger than the preset displacement threshold, determining that the washing machine collides with the barrel; and when the vibration displacement is not larger than the preset displacement threshold value, determining that the washing machine does not collide the barrel.
Further, in the above-described embodiment, from the t0To the t1The time interval of (A) is 8 to 12 seconds.
Further, the processing module 306 in the above embodiment is further configured to: and when the washing machine is determined to collide with the barrel, controlling the washing machine to finish the dehydration program or reducing the dehydration rotating speed adopted when the washing machine executes the dehydration program currently.
Further, the processing module 306 in the above embodiment is further configured to: and sending a barrel collision prompt signal when the washing machine is determined to generate barrel collision.
Further, the processing module 306 in the above embodiment is further configured to: and controlling the washing machine to execute a clothes shaking-up program when the washing machine is determined to collide with the tub.
Further, the processing module 306 in the above embodiment is further configured to: and when the washing machine is determined not to collide with the barrel, controlling the washing machine to keep the dehydration rotating speed adopted when the dehydration program is currently executed or controlling and increasing the dehydration rotating speed adopted when the washing machine is currently executed.
Further, in the above-described embodiment, the vibration direction includes an X-axis direction, a Y-axis direction, and a Z-axis direction in a spatial rectangular coordinate system.
Further, in the above embodiment, the value range of the preset time is as follows: 0.25 second to 1 second.
Based on the same inventive concept, the embodiment of the present invention further provides a washing control device corresponding to the method in the first embodiment, as shown in the third embodiment.
EXAMPLE III
As shown in fig. 4, a dehydration control apparatus according to a second embodiment of the present invention includes:
a processor 404; a memory 402 for storing executable instructions of the processor, wherein the processor 404 is configured to implement the steps of the dehydration control method as described in the first embodiment when the executable instructions stored in the memory 402 are executed.
Example four
Based on the same inventive concept, as one embodiment of the present invention, there is provided a washing machine including the dehydration control apparatus as described in any one of the above second and third embodiments.
Preferably, the washing machine includes a drum washing machine, a pulsator washing machine, and the like.
Based on the same inventive concept, the embodiment of the present invention further provides a computer-readable storage medium corresponding to the method in the first embodiment, which is shown in the fifth embodiment.
EXAMPLE five
According to the computer readable storage medium of the embodiment of the present invention, a computer program is stored thereon, and when the computer program is executed by the processing, the steps of the dehydration control method corresponding to the first embodiment are realized.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus (system) or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, etc. do not denote any order. These words may be interpreted as names.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (11)
1. A dehydration control method characterized by comprising:
when the washing machine executes a dehydration program, acquiring the vibration speed and the vibration acceleration of the outer barrel of the washing machine in the vibration direction at the current moment;
determining the vibration displacement of the outer barrel in the vibration direction after the outer barrel exceeds the current moment for a preset time according to the vibration speed and the vibration acceleration;
and determining whether the washing machine collides with the barrel according to the vibration displacement.
2. The dehydration control method according to claim 1, wherein said determining a vibration displacement amount of said outer tub in said vibration direction after exceeding said current time by a preset time according to said vibration speed and said vibration acceleration comprises:
determining the vibration displacement according to a preset displacement calculation formula, wherein the preset displacement calculation formula is as follows:
wherein S represents the amount of vibration displacement, t1Representing said current time, △ t representing said preset time, v1Represents the vibration speed and
a1representing the vibration acceleration and a represents an acceleration variable.
3. The dehydration control method according to claim 2,
from the t0To the t1The time interval of (a) is in the range of 8 seconds to 12 seconds.
4. The dehydration control method according to claim 1, wherein said determining whether the washing machine has a tub crash according to the amount of vibration displacement includes:
judging whether the vibration displacement is larger than a preset displacement threshold value or not;
when the vibration displacement is judged to be larger than the preset displacement threshold, determining that the washing machine collides with the barrel;
and when the vibration displacement is not larger than the preset displacement threshold value, determining that the washing machine does not collide the barrel.
5. The dehydration control method according to claim 4, further comprising, upon determining that the washing machine has a tub crash:
and controlling the washing machine to finish the dehydration program or controlling to reduce the dehydration rotating speed adopted when the washing machine executes the dehydration program currently.
6. The dehydration control method according to any one of claims 1 to 5, wherein the vibration direction includes an X-axis direction, a Y-axis direction and a Z-axis direction in a spatial rectangular coordinate system.
7. The dehydration control method according to any one of claims 1 to 5, wherein the preset time has a value range of: 0.25 second to 1 second.
8. A dehydration control apparatus, comprising:
the washing machine comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring the vibration speed and the vibration acceleration of an outer barrel of the washing machine in the vibration direction at the current moment when the washing machine executes a dehydration program;
the determining module is used for determining the vibration displacement of the outer barrel in the vibration direction after the outer barrel exceeds the current moment for preset time according to the vibration speed and the vibration acceleration;
and the processing module is used for determining whether the washing machine collides with the barrel according to the vibration displacement.
9. A dehydration control apparatus, comprising:
a processor;
memory for storing executable instructions of the processor, wherein the processor is configured to implement the steps of the method according to any one of claims 1 to 7 when executing the executable instructions stored in the memory.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 7.
11. A washing machine, characterized by comprising: a dewatering control as claimed in claim 8 or 9.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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