CN114000312A - Washing machine eccentricity detection method and device, storage medium and washing machine - Google Patents
Washing machine eccentricity detection method and device, storage medium and washing machine Download PDFInfo
- Publication number
- CN114000312A CN114000312A CN202111307799.5A CN202111307799A CN114000312A CN 114000312 A CN114000312 A CN 114000312A CN 202111307799 A CN202111307799 A CN 202111307799A CN 114000312 A CN114000312 A CN 114000312A
- Authority
- CN
- China
- Prior art keywords
- speed
- washing machine
- acceleration
- eccentric
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005406 washing Methods 0.000 title claims abstract description 158
- 238000001514 detection method Methods 0.000 title claims abstract description 62
- 230000001133 acceleration Effects 0.000 claims abstract description 202
- 238000000034 method Methods 0.000 claims abstract description 52
- 230000018044 dehydration Effects 0.000 claims abstract description 30
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 26
- 238000004590 computer program Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 description 30
- 238000012360 testing method Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Images
Classifications
-
- 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
- D06F33/48—Preventing or reducing imbalance or noise
-
- 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
- D06F34/16—Imbalance
-
- 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
- D06F2103/24—Spin speed; Drum movements
-
- 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
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
The invention provides a washing machine eccentricity detection method, a device, a storage medium and a washing machine, wherein the method comprises the following steps: after the dehydration program of the washing machine is started, when the dehydration is started, controlling the motor of the washing machine to start and accelerate the operation; when the time of the motor running acceleration reaches a first set time, controlling the motor to keep running at the current speed, and recording the current speed as a first acceleration speed; and comparing the first acceleration speed with a first preset speed to judge whether the washing machine is eccentric or not based on the comparison result of the first acceleration speed and the first preset speed. The scheme provided by the invention can replace the physical detection of the bumper bar, so that the bumper bar component of the washing machine can be eliminated.
Description
Technical Field
The invention relates to the field of control, in particular to a washing machine eccentricity detection method and device, a storage medium and a washing machine.
Background
The washing machine is used as a daily household appliance, relieves people from the labor of washing clothes, saves the time of people, brings great convenience to daily life, and is popular with the majority of users. The washing machine can generate great vibration during dewatering to bring serious noise pollution, and the too great vibration can cause barrel collision to cause damage of washing machine parts. The eccentricity of clothes can aggravate the vibration of the washing machine during dehydration, and the eccentricity is detected and the prevention is taken to reduce the risk of collision caused by the overlarge vibration of the washing machine.
The commonly used eccentric barrel collision detection mode is that a stop switch is arranged on a box body, when dehydration is unbalanced, a barrel body collides with an anti-collision rod to trigger the stop switch to stop a machine, and therefore barrel collision is avoided. Due to the randomness of the rotation of the barrel body, the mode of triggering the eccentric protection by the anti-collision rod has larger uncertainty.
Disclosure of Invention
The invention mainly aims to overcome the defects of the related technologies and provides a washing machine eccentricity detection method, a washing machine eccentricity detection device, a storage medium and a washing machine, so as to solve the problems that in the related technologies, the rotation of a barrel body is random when eccentricity is detected, and the barrel collision risk exists before the barrel collision is detected when the eccentricity is detected by using an anti-collision rod.
One aspect of the present invention provides an eccentricity detection method for a washing machine, including: after the dehydration program of the washing machine is started, when the dehydration is started, controlling the motor of the washing machine to start and accelerate the operation; when the time of the motor running acceleration reaches a first set time, controlling the motor to keep running at the current speed, and recording the current speed as a first acceleration speed; and comparing the first acceleration speed with a first preset speed to judge whether the washing machine is eccentric or not based on the comparison result of the first acceleration speed and the first preset speed.
Optionally, the determining whether the washing machine is eccentric based on the comparison result of the first acceleration speed and a first preset speed includes: controlling a motor of the washing machine to run for a second set time in an accelerating way, wherein the speed when the time for running the motor in the accelerating way reaches the second set time is recorded as a second accelerating speed; and judging whether the washing machine is eccentric or not based on a comparison result of the first acceleration speed and a first preset speed and a comparison result of the second acceleration speed and a second preset speed.
Optionally, the determining whether the washing machine is eccentric based on a comparison result of the first acceleration speed and a first preset speed and a comparison result of the second acceleration speed and a second preset speed includes: under the condition that the first acceleration speed is greater than the first preset speed, if the second acceleration speed V2 is greater than a second preset speed, determining that the eccentricity is not generated; when the first acceleration speed is equal to or lower than the first preset speed, and the second acceleration speed V2 is lower than a second preset speed, it is determined that the vehicle is eccentric.
Optionally, the method further comprises: under the condition that the first acceleration speed is greater than the first preset speed, if the second acceleration speed V2 is less than or equal to a second preset speed, further judging whether the washing machine is eccentric according to the running power of the motor; under the condition that the first acceleration speed is less than or equal to the first preset speed, if the second acceleration speed V2 is greater than a second preset speed, further judging whether the washing machine is eccentric according to the running power of the motor; wherein, judge whether the washing machine is eccentric according to the motor running power, include: controlling the motor to run at the second preset speed, and acquiring the average power of the motor running at the second preset speed within a preset time; comparing the average power P with a preset eccentric power limit value; if the average power P is larger than the eccentric power limit value, determining that the eccentric is eccentric, otherwise, determining that the eccentric is not eccentric.
Another aspect of the present invention provides an eccentricity detecting apparatus for a washing machine, comprising: the control unit is used for controlling the motor of the washing machine to start and accelerate when the washing machine starts to dewater after the dewatering program of the washing machine starts; when the time of the motor running acceleration reaches a first set time, controlling the motor to keep running at the current speed, and recording the current speed as a first acceleration speed; and the judging unit is used for comparing the first acceleration speed with a first preset speed so as to judge whether the washing machine is eccentric or not based on the comparison result of the first acceleration speed and the first preset speed.
Alternatively, the determining unit determining whether the washing machine is eccentric based on a comparison result of the first acceleration speed and a first preset speed includes: controlling a motor of the washing machine to run for a second set time in an accelerating way, wherein the speed when the time for running the motor in the accelerating way reaches the second set time is recorded as a second accelerating speed; and judging whether the washing machine is eccentric or not based on a comparison result of the first acceleration speed and a first preset speed and a comparison result of the second acceleration speed and a second preset speed.
Alternatively, the determining unit determining whether the washing machine is eccentric based on a comparison result of the first acceleration speed and a first preset speed and a comparison result of the second acceleration speed and a second preset speed includes: under the condition that the first acceleration speed is greater than the first preset speed, if the second acceleration speed V2 is greater than a second preset speed, determining that the eccentricity is not generated; when the first acceleration speed is equal to or lower than the first preset speed, and the second acceleration speed V2 is lower than a second preset speed, it is determined that the vehicle is eccentric.
Optionally, the determining unit is further configured to: under the condition that the first acceleration speed is greater than the first preset speed, if the second acceleration speed V2 is less than or equal to a second preset speed, further judging whether the washing machine is eccentric according to the running power of the motor; under the condition that the first acceleration speed is less than or equal to the first preset speed, if the second acceleration speed V2 is greater than a second preset speed, further judging whether the washing machine is eccentric according to the running power of the motor; wherein, judge whether the washing machine is eccentric according to the motor running power, include: controlling the motor to run at the second preset speed, and acquiring the average power of the motor running at the second preset speed within a preset time;
comparing the average power P with a preset eccentric power limit value; if the average power P is larger than the eccentric power limit value, determining that the eccentric is eccentric, otherwise, determining that the eccentric is not eccentric.
A further aspect of the invention provides a storage medium having stored thereon a computer program which, when executed by a processor, carries out the steps of any of the methods described above.
In a further aspect, the invention provides a washing machine comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the processor implementing the steps of any of the methods described above when executing the program.
The invention further provides a washing machine, which comprises the washing machine eccentricity detection device.
According to the technical scheme of the invention, in consideration of the randomness of rotation and shaking when the barrel is eccentric, the accidental performance exists when the fixed-position bumper bar is used for detecting the eccentricity, and the risk of barrel collision exists before the eccentric collision is detected, the invention proposes that an eccentric detection control method is adopted to replace the physical detection of the bumper bar so as to cancel the bumper bar component of the washing machine.
According to the technical scheme of the invention, the difference of the starting acceleration of the motor corresponding to different clothes weights is considered, the motor is driven and the speed of the motor is detected by using a timing mode on the basis of time, the time uncertainty caused by different accelerations when the stage dehydration speed is used as a contrast parameter is eliminated, and the eccentricity of the clothes in the barrel can be detected more quickly. Meanwhile, the mode of accelerating the motor and detecting the speed by timing is favorable for controlling the speed of the motor, the weight change of clothes in the barrel can be controlled within the minimum range, and the comparability of required comparison parameters is improved.
According to the technical scheme of the invention, the problem of detection accuracy is considered, the motor power measurement comparison is added on the basis of the detection and comparison of the rotating drum speed, the limitation and the contingency of a single parameter can be eliminated by multi-parameter detection, and the accuracy of eccentric detection in the operation process of the washing machine is ensured.
According to the technical scheme of the invention, three processes of acceleration, detection speed and power measurement are combined, and a multi-parameter comparison mode is utilized to improve the accuracy of eccentricity detection, ensure the stability and safety of the washing machine when the washing machine enters high-speed dehydration, reduce the mechanical fatigue of the washing machine caused by high-strength vibration and prolong the service life of the washing machine.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram illustrating an embodiment of an eccentricity detection method for a washing machine according to the present invention;
FIG. 2 is a flowchart of a method of detecting eccentricity in a washing machine according to an embodiment of the present invention;
fig. 3 is a block diagram of an embodiment of an eccentricity detection apparatus for a washing machine according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Fig. 1 is a schematic method diagram of an embodiment of an eccentricity detection method for a washing machine according to the present invention.
As shown in fig. 1, according to an embodiment of the present invention, the eccentricity detection method of the washing machine includes at least step S110, step S120, and step S130.
And step S110, after the dehydration program of the washing machine is started, when the dehydration is started, controlling the motor of the washing machine to start and accelerate the operation.
Specifically, according to the dewatering logic, after the dewatering program is started, the drainage valve of the washing machine is controlled to be opened to drain water in the washing barrel, dewatering is started after the drainage is finished, at the moment, the eccentricity detection control program is entered, and the motor of the washing machine is controlled to be started and accelerated when the dewatering is started. Wherein, the current of the driving motor is controlled according to the weight of the clothes in the barrel, and the accelerated current values of the driving motor corresponding to different clothes weights are different. The motor rotation current is larger under the eccentric condition, and the acceleration of the motor acceleration is relatively smaller under the condition of the same driving current when the clothes are eccentric. Therefore, aiming at different clothes weights, the acceleration of the motor when the washing machine is started during dehydration is different, and the motor rotating speed can be obtained by overlapping time. The weight of laundry in the washing tub is known.
And step S120, controlling the motor to keep running at the current speed after the time of the motor running at the accelerated speed reaches a first set time, and recording the current speed as a first accelerated speed V1.
Specifically, the motor of the washing machine is controlled to start and accelerate when the dehydration starts, timing is started, the current speed is recorded when the timing is ended (namely, when the first set time is reached), and the current speed is recorded as the first acceleration speed. In order to ensure that the weight change of clothes in the barrel is small, the motor is accelerated in a timing mode, the motor is ensured to always operate at a low rotating speed, and the comparability of judgment parameters is ensured by controlling variables.
Step S130, comparing the first acceleration speed with a first preset speed, and determining whether the washing machine is eccentric based on a comparison result of the first acceleration speed and the first preset speed.
In one embodiment, the motor of the washing machine is controlled to run for a second set time in an acceleration mode, wherein the speed of the motor when the time for running for acceleration reaches the second set time is recorded as a second acceleration speed; and judging whether the washing machine is eccentric or not based on a comparison result of the first acceleration speed and a first preset speed and a comparison result of the second acceleration speed and a second preset speed. Under the condition that the first acceleration speed is greater than the first preset speed, if the second acceleration speed V2 is greater than a second preset speed, determining that the eccentricity is not generated; when the first acceleration speed is equal to or lower than the first preset speed, and the second acceleration speed V2 is lower than a second preset speed, it is determined that the vehicle is eccentric. That is, the motor of the washing machine is controlled to run in an accelerated manner when the first acceleration speed is greater than the first preset speed and when the first acceleration speed is less than or equal to the first preset speed; and judging whether the washing machine is eccentric or not according to a comparison result of a second acceleration speed and a second preset speed when the time of the accelerated running of the motor reaches a second set time. The first preset speed and/or the second preset speed are/is determined according to the weight of clothes in the washing tub, namely, different weights of clothes correspond to different first preset speeds and/or second preset speeds. The first preset speed and/or the second preset speed may be obtained through experimental tests. For example, under the condition of different clothes weights, the motor is subjected to an acceleration test at the beginning of dehydration to obtain different acceleration speeds, namely a first preset speed; similarly, a second predetermined speed is also obtained in this manner.
When the first acceleration speed V1 is less than the first preset speed, it is indicated that the acceleration of the motor is small during dehydration and the laundry in the tub is suspected of being eccentric, and the motor of the washing machine is controlled to operate at an accelerated speed to ensure the detection rigidness and to confirm the eccentric state for a second time, and the judgment is continued according to the second acceleration speed after the time of the motor operation at an accelerated speed reaches a second set time. And when the first acceleration speed V1 is greater than the first preset speed, the acceleration of the motor is normal during dehydration, the motor of the washing machine is controlled to run in an accelerated manner to ensure the detection rigor and secondarily confirm the eccentric state, and the judgment is continued according to the second acceleration speed after the time of the motor running in an accelerated manner reaches the second set time.
Specifically, if the first acceleration speed V1 is greater than the first preset speed, controlling a motor of the washing machine to run in an accelerated manner; when the time of the motor running acceleration reaches a second set time, controlling the motor to keep running at the current speed, and recording the current speed as a second acceleration speed; and comparing the second acceleration speed with a second preset speed to judge whether the washing machine is eccentric according to the comparison result of the second acceleration speed and the second preset speed, wherein if the second acceleration speed V2 is greater than the second preset speed, the washing machine is judged not to be eccentric. If the first acceleration speed is less than or equal to the first preset speed, controlling a motor of the washing machine to operate in an accelerated mode; when the time of the motor running acceleration reaches a second set time, controlling the motor to keep running at the current speed, and recording the current speed as a second acceleration speed; and comparing the second acceleration speed with a second preset speed to judge whether the washing machine is eccentric according to the comparison result of the second acceleration speed and the second preset speed, wherein if the second acceleration speed V2 is less than the second preset speed, the washing machine is judged to be eccentric.
Further, under the condition that the first acceleration speed is greater than the first preset speed, if the second acceleration speed V2 is less than or equal to a second preset speed, determining whether the washing machine is eccentric or not according to the running power of the motor; and under the condition that the first acceleration speed is less than or equal to the first preset speed, if the second acceleration speed V2 is greater than a second preset speed, further judging whether the washing machine is eccentric according to the running power of the motor.
Whether the clothes in the barrel are eccentric or not is judged through the first acceleration speed V1 and the first preset speed; the second acceleration speed and the second preset speed are used for confirming the eccentricity condition of the clothes in the barrel, if the acceleration speeds of the two times are smaller than the preset speed, the eccentricity is judged, if the acceleration speeds of the two times are larger than the preset speed, the eccentricity is judged, and if the comparison results of the acceleration speeds of the two times and the preset speed are different, the power detection is carried out for confirmation.
For example, when the first acceleration speed V1 is greater than the first preset speed, the driving motor is accelerated, the time is counted, the current speed is recorded at the end of the time counting, the click acceleration process is ended and the motor speed is maintained at the current speed, i.e., the second acceleration speed V2, V2 is compared with the second preset speed corresponding to the weight of the laundry, and if the second acceleration speed V2 is greater than the second preset speed, the eccentricity detection process is determined as not being eccentric, and the eccentricity detection process is ended. If the second acceleration speed V2 is less than or equal to the second preset speed, it is further determined whether the washing machine is eccentric according to the average power P of the motor.
For example, when the first acceleration speed V1 is less than the first preset speed, the driving motor is accelerated, the time is counted, the current speed is recorded at the end of the time counting, the click acceleration process is ended and the motor speed is maintained at the current speed, i.e., the second acceleration speed V2, V2 is compared with the second preset speed corresponding to the weight of the laundry, and if the second acceleration speed V2 is less than the second preset speed, the eccentricity is determined, and the eccentricity detection process is ended. If the second acceleration speed V2 is greater than the second preset speed, it is further determined whether the washing machine is eccentric according to the average power P of the motor.
The judging whether the washing machine is eccentric according to the motor operating power may specifically include: controlling the motor to run at the second preset speed, and acquiring the average power of the motor running at the second preset speed within a preset time; comparing the average power P with a preset eccentric power limit value; if the average power P is larger than the eccentric power limit value, determining that the eccentric is eccentric, otherwise, determining that the eccentric is not eccentric.
For example, the driving motor is accelerated to a second preset speed, the motor is maintained to run at the second preset speed for a period of time (preset time), the average power P of the motor in the period of time is calculated, and the average power P is compared with the eccentric power limit value; when the average power P is larger than the eccentric power limit value, judging that the result is eccentricity, and ending the eccentricity detection program; and when the average power P is smaller than the limited value of the eccentric power, judging that the eccentric power is not eccentric, and ending the eccentric detection program.
The average power of the motor is different when the motor runs at a certain speed according to different clothes weights, and the limited value of the eccentric power can be obtained through experimental tests, namely the motor is driven to stabilize the rotating speed at a second preset speed, and the corresponding power when the clothes are just eccentric, namely the limited value of the eccentric power, is recorded.
For the purpose of clearly explaining the technical solution of the present invention, the following describes an implementation flow of the eccentricity detection method of the washing machine according to an embodiment of the present invention.
Fig. 2 is a flowchart of a method for detecting eccentricity of a washing machine according to an embodiment of the present invention. As shown in fig. 2, the process in the present flowchart starts after the dehydration process starts, and the process in the flowchart ends with the eccentricity detection process and the non-dehydration process, i.e., the eccentricity detection control process is interspersed in the dehydration process. And after the dewatering program is started, controlling a drain valve of the washing machine to be opened to drain water in the barrel, starting dewatering after the drainage is finished, and entering an eccentricity detection control flow, wherein the weight of the clothes in the barrel is known before the eccentricity detection control flow. According to the eccentric detection control flow, when the dehydration is started, the motor is controlled to start and accelerate for the first time (wherein, the current of the driving motor is controlled according to the weight of clothes in the barrel, the accelerating current values of the driving motor corresponding to different weights of clothes are different), timing is carried out, the current speed is recorded when the timing is finished (the timing time reaches a first set time), the motor acceleration process is simultaneously finished, the motor speed is maintained at the current speed, namely, the first acceleration speed V1, and the program judgment stage is entered:
s1: comparing the first acceleration speed V1 with a first preset speed corresponding to the weight of the clothes in the barrel, and when the first acceleration speed V1 is greater than the first preset speed, entering S2; when the first acceleration speed V1 is less than or equal to the first preset speed, proceed to S3;
s2: driving the motor to accelerate for the second time, timing, recording the current speed when timing is finished (the timing time reaches a second set time), simultaneously finishing the motor acceleration process, maintaining the motor speed at the current speed, namely a second acceleration speed V2, comparing the second acceleration speed V2 with a second preset speed corresponding to the weight of the clothes, and entering a program judgment stage S4;
s3: driving the motor to accelerate for the second time, timing, recording the current speed when timing is finished (the timing time reaches a second set time), simultaneously finishing the motor acceleration process, maintaining the motor speed at the current speed, namely a second acceleration speed V2, comparing the second acceleration speed V2 with a second preset speed corresponding to the weight of the clothes, and entering a program judgment stage S5;
s4: when the second acceleration speed V2 is greater than the second preset speed, the result is determined to be no eccentricity, and the eccentricity detection procedure is ended; when the second acceleration speed V2 is less than the second preset speed, go to S6;
s5: when the second acceleration speed V2 is greater than the second preset speed, go to S6; when the second acceleration speed V2 is less than the second preset speed, the determination result is eccentricity, and the eccentricity detection procedure is ended;
s6: driving the motor to accelerate to a second preset speed, maintaining the motor to run at the second preset speed for a period of time, calculating the average power P of the motor in the period of time, and comparing the average power P with the limited value of the eccentric power; when the average power P is larger than the eccentric power limit value, judging that the result is eccentricity, and ending the eccentricity detection program; and when the average power P is smaller than the limited value of the eccentric power, judging that the eccentric power is not eccentric, and ending the eccentric detection program.
Fig. 3 is a block diagram of an embodiment of an eccentricity detection apparatus for a washing machine according to the present invention. As shown in fig. 3, the apparatus 100 includes a control unit 110 and a judgment unit 120.
The control unit 110 is configured to control a motor of the washing machine to start and accelerate when the washing machine starts to perform dehydration after a dehydration process of the washing machine starts; and when the time of the accelerated running of the motor reaches a first set time, controlling the motor to keep running at the current speed, and recording the current speed as a first accelerated speed.
Specifically, according to the dewatering logic, the drain valve of the washing machine is controlled to open to drain the water in the washing tub after the dewatering process is started, dewatering is started after the draining is finished, the eccentricity detection control process is started, and the control unit 110 controls the motor of the washing machine to start and accelerate when the dewatering is started. Wherein, the current of the driving motor is controlled according to the weight of the clothes in the barrel, and the accelerated current values of the driving motor corresponding to different clothes weights are different. The motor rotation current is larger under the eccentric condition, and the acceleration of the motor acceleration is relatively smaller under the condition of the same driving current when the clothes are eccentric. Therefore, aiming at different clothes weights, the acceleration of the motor when the washing machine is started during dehydration is different, and the motor rotating speed can be obtained by overlapping time. The weight of laundry in the washing tub is known.
The control unit 110 controls the motor of the washing machine to start and accelerate when the dehydration starts, starts timing, records the current speed when the timing is finished (i.e., when the first set time is reached), and records the current speed as the first acceleration speed. In order to ensure that the weight change of clothes in the barrel is small, the motor is accelerated in a timing mode, the motor is ensured to always operate at a low rotating speed, and the comparability of judgment parameters is ensured by controlling variables.
The determining unit 120 is configured to compare the first acceleration speed with a first preset speed, and determine whether the washing machine is eccentric based on a comparison result of the first acceleration speed and the first preset speed.
In one embodiment, the determining unit 120 determines whether the washing machine is eccentric based on a comparison result of the first acceleration speed and a first preset speed, including: controlling a motor of the washing machine to run for a second set time in an accelerating way, wherein the speed when the time for running the motor in the accelerating way reaches the second set time is recorded as a second accelerating speed; and judging whether the washing machine is eccentric or not based on a comparison result of the first acceleration speed and a first preset speed and a comparison result of the second acceleration speed and a second preset speed.
That is, the motor of the washing machine is controlled to run in an accelerated manner when the first acceleration speed is greater than the first preset speed and when the first acceleration speed is less than or equal to the first preset speed; and judging whether the washing machine is eccentric or not according to a comparison result of a second acceleration speed and a second preset speed when the time of the accelerated running of the motor reaches a second set time. The first preset speed and/or the second preset speed are/is determined according to the weight of clothes in the washing tub, namely, different weights of clothes correspond to different first preset speeds and/or second preset speeds. The first preset speed and/or the second preset speed may be obtained through experimental tests. For example, under the condition of different clothes weights, the motor is subjected to an acceleration test at the beginning of dehydration to obtain different acceleration speeds, namely a first preset speed; similarly, a second predetermined speed is also obtained in this manner.
When the first acceleration speed V1 is less than the first preset speed, it is indicated that the acceleration of the motor is small during dehydration and the laundry in the tub is suspected of being eccentric, and the motor of the washing machine is controlled to operate at an accelerated speed to ensure the detection rigidness and to confirm the eccentric state for a second time, and the judgment is continued according to the second acceleration speed after the time of the motor operation at an accelerated speed reaches a second set time. And when the first acceleration speed V1 is greater than the first preset speed, the acceleration of the motor is normal during dehydration, the motor of the washing machine is controlled to run in an accelerated manner to ensure the detection rigor and secondarily confirm the eccentric state, and the judgment is continued according to the second acceleration speed after the time of the motor running in an accelerated manner reaches the second set time.
Specifically, if the first acceleration speed V1 is greater than the first preset speed, controlling a motor of the washing machine to run in an accelerated manner; when the time of the motor running acceleration reaches a second set time, controlling the motor to keep running at the current speed, and recording the current speed as a second acceleration speed; and comparing the second acceleration speed with a second preset speed to judge whether the washing machine is eccentric according to the comparison result of the second acceleration speed and the second preset speed, wherein if the second acceleration speed V2 is greater than the second preset speed, the washing machine is judged not to be eccentric. If the first acceleration speed is less than or equal to the first preset speed, controlling a motor of the washing machine to operate in an accelerated mode; when the time of the motor running acceleration reaches a second set time, controlling the motor to keep running at the current speed, and recording the current speed as a second acceleration speed; and comparing the second acceleration speed with a second preset speed to judge whether the washing machine is eccentric according to the comparison result of the second acceleration speed and the second preset speed, wherein if the second acceleration speed V2 is less than the second preset speed, the washing machine is judged to be eccentric.
Further, under the condition that the first acceleration speed is greater than the first preset speed, if the second acceleration speed V2 is less than or equal to a second preset speed, determining whether the washing machine is eccentric or not according to the running power of the motor; and under the condition that the first acceleration speed is less than or equal to the first preset speed, if the second acceleration speed V2 is greater than a second preset speed, further judging whether the washing machine is eccentric according to the running power of the motor.
Whether the clothes in the barrel are eccentric or not is judged through the first acceleration speed V1 and the first preset speed; the second acceleration speed and the second preset speed are used for confirming the eccentricity condition of the clothes in the barrel, if the acceleration speeds of the two times are smaller than the preset speed, the eccentricity is judged, if the acceleration speeds of the two times are larger than the preset speed, the eccentricity is judged, and if the comparison results of the acceleration speeds of the two times and the preset speed are different, the power detection is carried out for confirmation.
For example, when the first acceleration speed V1 is greater than the first preset speed, the driving motor is accelerated, the time is counted, the current speed is recorded at the end of the time counting, the click acceleration process is ended and the motor speed is maintained at the current speed, i.e., the second acceleration speed V2, V2 is compared with the second preset speed corresponding to the weight of the laundry, and if the second acceleration speed V2 is greater than the second preset speed, the eccentricity detection process is determined as not being eccentric, and the eccentricity detection process is ended. If the second acceleration speed V2 is less than or equal to the second preset speed, it is further determined whether the washing machine is eccentric according to the average power P of the motor.
For example, when the first acceleration speed V1 is less than the first preset speed, the driving motor is accelerated, the time is counted, the current speed is recorded at the end of the time counting, the click acceleration process is ended and the motor speed is maintained at the current speed, i.e., the second acceleration speed V2, V2 is compared with the second preset speed corresponding to the weight of the laundry, and if the second acceleration speed V2 is less than the second preset speed, the eccentricity is determined, and the eccentricity detection process is ended. If the second acceleration speed V2 is greater than the second preset speed, it is further determined whether the washing machine is eccentric according to the average power P of the motor.
The judging whether the washing machine is eccentric according to the motor operating power may specifically include: controlling the motor to run at the second preset speed, and acquiring the average power of the motor running at the second preset speed within a preset time; comparing the average power P with a preset eccentric power limit value; if the average power P is larger than the eccentric power limit value, determining that the eccentric is eccentric, otherwise, determining that the eccentric is not eccentric.
For example, the driving motor is accelerated to a second preset speed, the motor is maintained to run at the second preset speed for a period of time (preset time), the average power P of the motor in the period of time is calculated, and the average power P is compared with the eccentric power limit value; when the average power P is larger than the eccentric power limit value, judging that the result is eccentricity, and ending the eccentricity detection program; and when the average power P is smaller than the limited value of the eccentric power, judging that the eccentric power is not eccentric, and ending the eccentric detection program.
The average power of the motor is different when the motor runs at a certain speed according to different clothes weights, and the limited value of the eccentric power can be obtained through experimental tests, namely the motor is driven to stabilize the rotating speed at a second preset speed, and the corresponding power when the clothes are just eccentric, namely the limited value of the eccentric power, is recorded.
The present invention also provides a storage medium corresponding to the method for detecting eccentricity of a washing machine, on which a computer program is stored, which when executed by a processor implements the steps of any of the aforementioned methods.
The invention also provides a washing machine corresponding to the washing machine eccentricity detection method, which comprises a processor, a memory and a computer program which is stored on the memory and can run on the processor, wherein the processor realizes the steps of any one of the methods when executing the program.
The invention also provides a washing machine corresponding to the washing machine eccentricity detection device, which comprises the washing machine eccentricity detection device.
Accordingly, according to the technical scheme of the invention, in consideration of the randomness of rotation and shaking when the barrel is eccentric, the accidental phenomenon exists when the eccentric position is detected by using the bumper bar at a fixed position, and the risk of barrel collision exists before the eccentric position is detected, the invention provides that an eccentric position detection control method is adopted to replace the physical detection of the bumper bar so as to cancel the bumper bar component of the washing machine.
According to the technical scheme of the invention, the difference of the starting acceleration of the motor corresponding to different clothes weights is considered, the motor is driven and the speed of the motor is detected by using a timing mode on the basis of time, the time uncertainty caused by different accelerations when the stage dehydration speed is used as a contrast parameter is eliminated, and the eccentricity of the clothes in the barrel can be detected more quickly. Meanwhile, the mode of accelerating the motor and detecting the speed by timing is favorable for controlling the speed of the motor, the weight change of clothes in the barrel can be controlled within the minimum range, and the comparability of required comparison parameters is improved.
According to the technical scheme of the invention, the problem of detection accuracy is considered, the motor power measurement comparison is added on the basis of the detection and comparison of the rotating drum speed, the limitation and the contingency of a single parameter can be eliminated by multi-parameter detection, and the accuracy of eccentric detection in the operation process of the washing machine is ensured.
According to the technical scheme of the invention, three processes of acceleration, detection speed and power measurement are combined, and a multi-parameter comparison mode is utilized to improve the accuracy of eccentricity detection, ensure the stability and safety of the washing machine when the washing machine enters high-speed dehydration, reduce the mechanical fatigue of the washing machine caused by high-strength vibration and prolong the service life of the washing machine.
The technical scheme of the invention adopts a control mode to realize eccentricity detection, and replaces a mechanical anti-collision rod switch used for detecting eccentricity of the traditional washing machine;
according to the technical scheme of the invention, on the basis that the washing machine senses the rotating speed of the motor, the power of the motor and the weight of clothes, the motor speed and the rotating power of the motor are used as comparison parameters to carry out eccentricity detection control.
The technical scheme of the invention is carried out when the washing machine starts to dewater, and three actions of acceleration, speed detection and power measurement are involved in the execution process. The three actions can be completed by the motor matching with the motor control assembly; the motor control assembly is matched with the eccentricity judgment logic to realize the eccentricity detection function by acquiring speed and power parameters.
The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope and spirit of the invention and the following claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hardwired, or a combination of any of these. In addition, each functional unit may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and the parts serving as the control device may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. An eccentricity detection method of a washing machine, characterized by comprising:
after the dehydration program of the washing machine is started, when the dehydration is started, controlling the motor of the washing machine to start and accelerate the operation;
when the time of the motor running acceleration reaches a first set time, controlling the motor to keep running at the current speed, and recording the current speed as a first acceleration speed;
and comparing the first acceleration speed with a first preset speed to judge whether the washing machine is eccentric or not based on the comparison result of the first acceleration speed and the first preset speed.
2. The method of claim 1, wherein determining whether the washing machine is eccentric based on the comparison result of the first acceleration speed with a first preset speed comprises:
controlling a motor of the washing machine to run for a second set time in an accelerating way, wherein the speed when the time for running the motor in the accelerating way reaches the second set time is recorded as a second accelerating speed;
and judging whether the washing machine is eccentric or not based on a comparison result of the first acceleration speed and a first preset speed and a comparison result of the second acceleration speed and a second preset speed.
3. The method of claim 2, wherein determining whether the washing machine is eccentric based on the comparison result of the first acceleration speed with a first preset speed and the comparison result of the second acceleration speed with a second preset speed comprises:
under the condition that the first acceleration speed is greater than the first preset speed, if the second acceleration speed is greater than a second preset speed, determining that the eccentricity is not generated;
and under the condition that the first acceleration speed is less than or equal to the first preset speed, the second acceleration speed is greater than a second preset speed, and the eccentricity is judged.
4. The method of claim 3, further comprising:
under the condition that the first acceleration speed is greater than the first preset speed, if the second acceleration speed is less than or equal to a second preset speed, further judging whether the washing machine is eccentric or not according to the running power of the motor;
under the condition that the first acceleration speed is less than or equal to the first preset speed, if the second acceleration speed is greater than a second preset speed, further judging whether the washing machine is eccentric according to the running power of the motor;
wherein, judge whether the washing machine is eccentric according to the motor running power, include:
controlling the motor to run at the second preset speed, and acquiring the average power of the motor running at the second preset speed within a preset time;
comparing the average power with a preset eccentric power limit value; if the average power P is larger than the eccentric power limit value, determining that the eccentric is eccentric, otherwise, determining that the eccentric is not eccentric.
5. An eccentricity detecting device of a washing machine, comprising:
the control unit is used for controlling the motor of the washing machine to start and accelerate when the washing machine starts to dewater after the dewatering program of the washing machine starts; when the time of the motor running acceleration reaches a first set time, controlling the motor to keep running at the current speed, and recording the current speed as a first acceleration speed;
and the judging unit is used for comparing the first acceleration speed with a first preset speed so as to judge whether the washing machine is eccentric or not based on the comparison result of the first acceleration speed and the first preset speed.
6. The apparatus of claim 5, wherein the judging unit judging whether the washing machine is eccentric based on a comparison result of the first acceleration speed with a first preset speed comprises:
controlling a motor of the washing machine to run for a second set time in an accelerating way, wherein the speed when the time for running the motor in the accelerating way reaches the second set time is recorded as a second accelerating speed;
and judging whether the washing machine is eccentric or not based on a comparison result of the first acceleration speed and a first preset speed and a comparison result of the second acceleration speed and a second preset speed.
7. The apparatus of claim 6, wherein the judging unit judging whether the washing machine is eccentric based on a comparison result of the first acceleration speed with a first preset speed and a comparison result of the second acceleration speed with a second preset speed comprises:
under the condition that the first acceleration speed is greater than the first preset speed, if the second acceleration speed is greater than a second preset speed, determining that the eccentricity is not generated;
and under the condition that the first acceleration speed is less than or equal to the first preset speed, the second acceleration speed is greater than a second preset speed, and the eccentricity is judged.
8. The apparatus of claim 7, wherein the determining unit is further configured to:
under the condition that the first acceleration speed is greater than the first preset speed, if the second acceleration speed is less than or equal to a second preset speed, further judging whether the washing machine is eccentric or not according to the running power of the motor;
under the condition that the first acceleration speed is less than or equal to the first preset speed, if the second acceleration speed is greater than a second preset speed, further judging whether the washing machine is eccentric according to the running power of the motor;
wherein, judge whether the washing machine is eccentric according to the motor running power, include:
controlling the motor to run at the second preset speed, and acquiring the average power of the motor running at the second preset speed within a preset time;
comparing the average power with a preset eccentric power limit value; if the average power P is larger than the eccentric power limit value, determining that the eccentric is eccentric, otherwise, determining that the eccentric is not eccentric.
9. A storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 4.
10. A washing machine comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the processor when executing the program implementing the steps of the method according to any one of claims 1 to 4 or comprising the washing machine eccentricity detection device according to any one of claims 5 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111307799.5A CN114000312A (en) | 2021-11-05 | 2021-11-05 | Washing machine eccentricity detection method and device, storage medium and washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111307799.5A CN114000312A (en) | 2021-11-05 | 2021-11-05 | Washing machine eccentricity detection method and device, storage medium and washing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114000312A true CN114000312A (en) | 2022-02-01 |
Family
ID=79928042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111307799.5A Pending CN114000312A (en) | 2021-11-05 | 2021-11-05 | Washing machine eccentricity detection method and device, storage medium and washing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114000312A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050283919A1 (en) * | 2004-06-25 | 2005-12-29 | Lg Electronics Inc. | Method for controlling spinning in drum-type washing machine |
| CN106676818A (en) * | 2015-11-09 | 2017-05-17 | 无锡小天鹅股份有限公司 | Method and system for detecting dehydrating barrel of pulsator washing machine |
| CN107190462A (en) * | 2017-05-08 | 2017-09-22 | 无锡飞翎电子有限公司 | Washing machine, washing machine hit barrel detection method and device |
| CN109487486A (en) * | 2017-09-11 | 2019-03-19 | 无锡小天鹅股份有限公司 | The control method and device for clothing processing of device for clothing processing |
| CN110735289A (en) * | 2019-10-18 | 2020-01-31 | 峰岹科技（深圳）有限公司 | Method for detecting eccentricity of washing machine, washing machine eccentricity detection device, storage medium and washing machine |
| CN112709045A (en) * | 2019-10-08 | 2021-04-27 | 无锡飞翎电子有限公司 | Control method and device of washing machine and washing machine |
| KR20210054249A (en) * | 2019-11-05 | 2021-05-13 | 엘지전자 주식회사 | Method of washing machine |
-
2021
- 2021-11-05 CN CN202111307799.5A patent/CN114000312A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050283919A1 (en) * | 2004-06-25 | 2005-12-29 | Lg Electronics Inc. | Method for controlling spinning in drum-type washing machine |
| CN106676818A (en) * | 2015-11-09 | 2017-05-17 | 无锡小天鹅股份有限公司 | Method and system for detecting dehydrating barrel of pulsator washing machine |
| CN107190462A (en) * | 2017-05-08 | 2017-09-22 | 无锡飞翎电子有限公司 | Washing machine, washing machine hit barrel detection method and device |
| CN109487486A (en) * | 2017-09-11 | 2019-03-19 | 无锡小天鹅股份有限公司 | The control method and device for clothing processing of device for clothing processing |
| CN112709045A (en) * | 2019-10-08 | 2021-04-27 | 无锡飞翎电子有限公司 | Control method and device of washing machine and washing machine |
| CN110735289A (en) * | 2019-10-18 | 2020-01-31 | 峰岹科技（深圳）有限公司 | Method for detecting eccentricity of washing machine, washing machine eccentricity detection device, storage medium and washing machine |
| KR20210054249A (en) * | 2019-11-05 | 2021-05-13 | 엘지전자 주식회사 | Method of washing machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2000576A2 (en) | Washing machine and method of controlling the same | |
| US7752694B2 (en) | Dehydration controlling apparatus for washing machine and method thereof | |
| CN108998924B (en) | Clothes wrinkle removal control method and device, storage medium and washing machine | |
| CN107099969B (en) | Washing machine eccentricity detection method, machine readable storage medium and variable frequency washing machine | |
| CN112941818B (en) | Washing machine control method and device, storage medium and washing machine | |
| US7707671B2 (en) | Dehydration controlling apparatus for washing machine and method thereof | |
| CN111118819A (en) | Rinsing treatment method, rinsing treatment device and clothes treatment device | |
| KR100195925B1 (en) | Control method of full automatic washing machine having microphone | |
| CN108221301A (en) | Dewatering, device and device for clothing processing | |
| CN111101327B (en) | Drum collision detection method and device for clothes treatment device and clothes treatment device | |
| CN114000312A (en) | Washing machine eccentricity detection method and device, storage medium and washing machine | |
| CN117364409A (en) | Control method and device of washing machine, washing machine and storage medium | |
| CN114164610B (en) | Washing machine eccentricity detection method and device, storage medium and washing machine | |
| WO2008148844A2 (en) | A washer/dryer and the control method thereof | |
| CN110924057A (en) | Drum washing machine dehydration control method and drum washing machine | |
| CN112760913B (en) | Control method and device for drainage pump, washing machine, storage medium and processor | |
| CN112522907B (en) | Control method for detecting foam in washing bucket and washing machine | |
| CN112709045A (en) | Control method and device of washing machine and washing machine | |
| CN111270473A (en) | Control method and device of clothes treatment device and clothes treatment device | |
| KR101074702B1 (en) | Method for balance dehydration of washing machine | |
| CN111850947A (en) | Control method of washing equipment with dewatering function and washing equipment | |
| KR101019475B1 (en) | method for controlling dehydration in drum type washing machine | |
| CN112626796B (en) | Control method and device of washing machine, washing machine and computer readable storage medium | |
| CN114164608B (en) | Washing machine dehydration method, device, storage medium and washing machine | |
| CN115852633A (en) | Washing machine, control method and device thereof, and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220201 |