CN110552156A - dehydration control method based on eccentricity judgment of microphone - Google Patents
dehydration control method based on eccentricity judgment of microphone Download PDFInfo
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- CN110552156A CN110552156A CN201910860588.0A CN201910860588A CN110552156A CN 110552156 A CN110552156 A CN 110552156A CN 201910860588 A CN201910860588 A CN 201910860588A CN 110552156 A CN110552156 A CN 110552156A
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Abstract
The invention discloses a dehydration control method based on microphone eccentricity judgment, which comprises the following steps: starting dehydration, adjusting the clothes, weighing the clothes when the dehydration rotating speed reaches N0, determining the eccentric noise threshold value of the clothes according to the range of the weight of the clothes, detecting whether the dehydration rotating speed reaches the set rotating speed threshold value, if so, judging whether the noise volume generated by the eccentricity of the clothes is larger than the set noise volume threshold value, if so, continuing increasing the speed for dehydration, if not, returning to the steps until the accumulated times exceeding the noise volume threshold value are equal to the preset threshold value, directly shaking the clothes to disperse, and finishing the dehydration. According to the invention, the microphone is arranged on the PCB main board of the washing machine to monitor the noise volume of the internal system of the washing machine in the dehydration process in real time, the eccentric size in the dehydration barrel is judged according to the actually measured noise volume, and the dehydration control strategy is adjusted in time, so that the vibration and noise are reduced, the safety of the washing machine in the dehydration operation process is improved, and the service life of the washing machine is prolonged.
Description
Technical Field
The invention belongs to the technical field of drum washing machines, and relates to a dehydration control method for judging eccentricity based on a microphone.
Background
At present, most of drum washing machine dehydration control methods in the market can be roughly divided into two methods, one method is to judge the eccentricity condition of a dehydration inner drum through eccentricity detection, the eccentricity detection is generally realized when the rotating speed of a washing machine drum is 90-140 revolutions, and then the dehydration strategy is adjusted according to the eccentricity condition. And the other method is that a 3D sensor is arranged on the outer cylinder, the amplitude of the outer cylinder is judged through the 3D sensor, and the dehydration strategy is adjusted according to the actually measured vibration magnitude.
With the improvement of living standard of people, the requirement of consumers on the sound quality of the washing machine is higher and higher. In the traditional dehydration control strategy, the signal is simply acquired from the motor or the amplitude signal of the outer cylinder is acquired, so that the requirement cannot be met. In the actual dehydration process of the washing machine, due to the fact that certain parts are aged or huge abnormal sound is caused by human factors, a traditional control strategy cannot be identified and a coping strategy is adopted when similar conditions occur, the problems of large noise and large vibration exist when the washing machine dehydrates, and the service life of the washing machine is seriously influenced.
disclosure of Invention
the invention aims to provide a dehydration control method based on microphone eccentricity judgment, which solves the problems of large noise and vibration and low service life of a washing machine in the prior art.
the purpose of the invention can be realized by the following technical scheme:
a dehydration control method based on microphone eccentricity judgment comprises the following steps:
s1, starting the washing machine to dewater and adjust the clothes;
S2, when the dehydration rotating speed reaches N0, weighing the clothes, and determining the eccentric noise threshold value of the clothes according to the range of the weight of the clothes;
S3, detecting whether the dehydration rotation speed reaches N1, if yes, executing a step S5, and if not, executing a step S4;
s4, judging whether the average value of noise generated by eccentricity of the clothes is larger than a corresponding noise threshold value, if so, adding 1 to the number m, returning to the step S1 when the value of the accumulated judgment number m is smaller than a preset threshold value m0, directly shaking up the clothes and finishing dehydration when the value of the accumulated judgment number m is equal to a preset threshold value m0, wherein m represents the current counting number of use, and m0 represents the total counting number;
s5, when the dehydration rotating speed reaches N1, collecting the noise volume in the washing machine by using a microphone arranged on a PCB (printed Circuit Board), judging whether M is smaller than M1, if so, performing step S6, if not, returning to step S1 when the value of the accumulated judgment time M is smaller than a preset threshold value M0, and when the value of the accumulated judgment time M is equal to a preset threshold value M0, executing operation for t0 time at the rotating speed of N1, shaking the clothes and finishing dehydration, wherein M is the average value of the noise at the stable rotating speed of N1;
S6, operating at a rotating speed N2 for T1 time to perform dehydration, adopting a microphone arranged on a PCB to collect the noise volume in the washing machine, judging whether M is smaller than M2, if so, performing S7, otherwise, operating at a rotating speed N2 for T time to shake clothes away, and finishing the dehydration;
S7, dehydrating in T1 time of operation at the rotating speed N3, acquiring the noise volume of an internal system by using a microphone arranged on a PCB, judging whether M is smaller than M3, if so, performing step S8, otherwise, executing T time of operation at the rotating speed N3, shaking clothes away, and finishing dehydrating;
S8, operating at a rotating speed N4 for T1 time to perform dehydration, acquiring the noise volume of an internal system by using a microphone arranged on a PCB (printed Circuit Board), judging whether M is less than M4, if so, performing step S9, operating at a rotating speed N4 for T time, shaking off clothes, and finishing the dehydration;
S9, dehydrating in T1 time of operation at the rotating speed N5, acquiring the noise volume of an internal system by using a microphone arranged on a PCB, judging whether M is smaller than M5, if so, performing step S10, otherwise, executing T time of operation at the rotating speed N5, shaking clothes away, and finishing dehydrating;
And S10, running for T time at the rotating speed N6 for dehydration, shaking the clothes after the dehydration is finished, and finishing the dehydration.
further, in step S4, the noise in the fixed time period is averaged to obtain a noise average value, and when the noise average value is greater than the corresponding noise threshold, the count number m of the counter is incremented once, that is, m is m +1, and the starting value of m is 0.
further, the numbers of the rotation speeds N1, N2, N3, N4, N5 and N6 were 400rpm, 600rpm, 800rpm, 1000rpm, 1200rpm and 1400rpm, respectively.
further, M1, M2, M3, M4, and M5 respectively indicate that the rotation speed reaches a preset noise limit value corresponding to N2, the rotation speed reaches a preset noise limit value corresponding to N3, the rotation speed reaches a preset noise limit value corresponding to N4, the rotation speed reaches a preset noise limit value corresponding to N5, and the rotation speed reaches a preset noise limit value corresponding to N6.
The invention has the beneficial effects that:
According to the dehydration control method based on the microphone for judging the eccentricity, the microphone is arranged on the PCB main board of the washing machine to monitor the noise volume of the internal system of the washing machine in the dehydration process in real time, the eccentricity of the dehydration barrel is judged according to the actually measured noise volume, and the dehydration control strategy is adjusted in time, so that the problems of large vibration and noise caused by barrel collision of the washing machine are effectively avoided, the vibration and noise are reduced, and the safety and the service life of the washing machine in the dehydration operation process are improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
A dehydration control method based on microphone eccentricity judgment comprises the following steps:
s1, starting the washing machine to dewater and adjust the clothes;
s2, when the dehydration rotating speed reaches N0, weighing the clothes, and determining the eccentric noise threshold value of the clothes according to the range of the weight of the clothes;
s3, detecting whether the dehydration rotation speed reaches N1, if yes, executing a step S5, and if not, executing a step S4;
S4, judging whether the average value of noise generated by eccentricity of the clothes is larger than a corresponding noise threshold value, if so, adding 1 to the number m, returning to the step S1 when the value of the accumulated judgment number m is smaller than a preset threshold value m0, directly shaking up the clothes and finishing dehydration when the value of the accumulated judgment number m is equal to a preset threshold value m0, wherein m represents the current counting number of use, and m0 represents the total counting number;
Obtaining an average value of noise by averaging the noise in a certain fixed time period, judging the eccentricity formed by the clothes according to the obtained average value of the noise, and when the average value of the noise is greater than a corresponding noise threshold value, increasing the counting number m of a counter once, namely m is m +1, and the initial value of m is 0;
S5, when the dehydration rotating speed reaches N1, a microphone arranged on a PCB board is adopted to collect the noise volume in the washing machine, whether M is smaller than M1 or not is judged, if yes, the step S6 is carried out, if not, when the value of the accumulated judgment times M is smaller than a preset threshold value M0, the step S1 is returned, when the value of the accumulated judgment times M is equal to a preset threshold value M0, the operation is carried out for t0 time at the N1 rotating speed, clothes are shaken and dehydrated, wherein M is the noise average value of the N1 under the stable rotating speed, and M1 indicates that the rotating speed reaches the preset noise limit value corresponding to N2;
S6, performing dehydration for T1 time when the washing machine runs at the rotating speed N2, collecting the noise volume in the washing machine by using a microphone arranged on a PCB (printed Circuit Board), judging whether M is smaller than M2, if so, performing S7, otherwise, executing T time when the washing machine runs at the rotating speed N2, shaking off clothes, and finishing dehydration, wherein M2 indicates that the rotating speed reaches a preset noise limit value corresponding to N3;
s7, dehydrating within T1 time of operation at a rotating speed of N3, acquiring the noise volume of an internal system by using a microphone arranged on a PCB, judging whether M is smaller than M3, if so, performing S8, otherwise, executing T time of operation at a rotating speed of N3, shaking clothes away, and finishing dehydrating, wherein M3 indicates that the rotating speed reaches a preset noise limit value corresponding to N4;
s8, performing dehydration for T1 time when the machine runs at the rotating speed N4, acquiring the noise volume of an internal system by using a microphone arranged on a PCB (printed Circuit Board), judging whether M is smaller than M4, if so, performing step S9, executing T time when the machine runs at the rotating speed N4, shaking up clothes, and finishing dehydration, wherein M4 indicates that the rotating speed reaches a preset noise limit value corresponding to N5;
and S9, performing dehydration for T1 time when the machine runs at the rotating speed N5, acquiring the noise volume of an internal system by using a microphone arranged on a PCB (printed Circuit Board), judging whether M is less than M5, if so, performing step S10, otherwise, executing T time when the machine runs at the rotating speed N5, shaking off clothes, and finishing dehydration, wherein M5 indicates that the rotating speed reaches a preset noise limit value corresponding to N6.
and S10, running for T time at the rotating speed N6 for dehydration, shaking the clothes after the dehydration is finished, and finishing the dehydration.
the rotation speeds N0, N1, N2, N3, N4, N5 and N6 correspond to the unit of rpm, N1 is 400rpm, N2 is 600rpm, N3 is 800rpm, N4 is 1000rpm, N5 is 1200rpm, and N6 is 1400 rpm; the unit for T0 is min, and the units for T1 and T are s.
The microphone is built in the PCB board and is installed inside the washing machine, which is equivalent to installing one human ear inside the washing machine. The data collected by the microphone can not only identify abnormal sound state and adopt a coping strategy in the first time, but also judge the eccentric size of clothes in the barrel according to different sound pressure levels, and adjust the dehydration control strategy through the data collected in real time, thus creating a brand-new dehydration control scheme unprecedentedly. The blind area of the traditional control strategy can be swept, and the whole functions of the existing dehydration control strategy can be realized, so that the sound quality of the washing machine is further improved.
The invention provides a dehydration control method based on microphone judgment eccentricity, which adopts a microphone sensor arranged on a PCB main control board to monitor the sound pressure level of an internal system of a washing machine in the dehydration process in real time, judges the eccentricity size in a dehydration inner barrel according to the actually measured sound pressure level, adjusts a dehydration control strategy in time, replaces the traditional control scheme, effectively avoids the problems of barrel collision, high vibration, high noise and the like of the washing machine, and improves the performances of the whole machine in the aspects of safety, vibration, noise, service life and the like.
the foregoing is merely exemplary and illustrative of the principles of the present invention and various modifications, additions and substitutions of the specific embodiments described herein may be made by those skilled in the art without departing from the principles of the present invention or exceeding the scope of the claims set forth herein.
Claims (4)
1. A dehydration control method based on microphone eccentricity judgment is characterized by comprising the following steps:
S1, starting the washing machine to dewater and adjust the clothes;
S2, when the dehydration rotating speed reaches N0, weighing the clothes, and determining the eccentric noise threshold value of the clothes according to the range of the weight of the clothes;
S3, detecting whether the dehydration rotation speed reaches N1, if yes, executing a step S5, and if not, executing a step S4;
S4, judging whether the average value of noise generated by eccentricity of the clothes is larger than a corresponding noise threshold value, if so, adding 1 to the number m, returning to the step S1 when the value of the accumulated judgment number m is smaller than a preset threshold value m0, directly shaking up the clothes and finishing dehydration when the value of the accumulated judgment number m is equal to a preset threshold value m0, wherein m represents the current counting number of use, and m0 represents the total counting number;
s5, when the dehydration rotating speed reaches N1, collecting the noise volume in the washing machine by using a microphone arranged on a PCB (printed Circuit Board), judging whether M is smaller than M1, if so, performing step S6, if not, returning to step S1 when the value of the accumulated judgment time M is smaller than a preset threshold value M0, and when the value of the accumulated judgment time M is equal to a preset threshold value M0, executing operation for t0 time at the rotating speed of N1, shaking the clothes and finishing dehydration, wherein M is the average value of the noise at the stable rotating speed of N1;
S6, operating at a rotating speed N2 for T1 time to perform dehydration, adopting a microphone arranged on a PCB to collect the noise volume in the washing machine, judging whether M is smaller than M2, if so, performing S7, otherwise, operating at a rotating speed N2 for T time to shake clothes away, and finishing the dehydration;
s7, dehydrating in T1 time of operation at the rotating speed N3, acquiring the noise volume of an internal system by using a microphone arranged on a PCB, judging whether M is smaller than M3, if so, performing step S8, otherwise, executing T time of operation at the rotating speed N3, shaking clothes away, and finishing dehydrating;
s8, operating at a rotating speed N4 for T1 time to perform dehydration, acquiring the noise volume of an internal system by using a microphone arranged on a PCB (printed Circuit Board), judging whether M is less than M4, if so, performing step S9, operating at a rotating speed N4 for T time, shaking off clothes, and finishing the dehydration;
s9, dehydrating in T1 time of operation at the rotating speed N5, acquiring the noise volume of an internal system by using a microphone arranged on a PCB, judging whether M is smaller than M5, if so, performing step S10, otherwise, executing T time of operation at the rotating speed N5, shaking clothes away, and finishing dehydrating;
And S10, running for T time at the rotating speed N6 for dehydration, shaking the clothes after the dehydration is finished, and finishing the dehydration.
2. The dehydration control method based on microphone judgment eccentricity according to claim 1, wherein: in step S4, the noise in the fixed time period is averaged to obtain a noise average value, and when the noise average value is greater than the corresponding noise threshold, the count number m of the counter is incremented once, that is, m is m +1, and the starting value of m is 0.
3. the dehydration control method based on microphone judgment eccentricity according to claim 1, wherein: the numbers of the rotation speeds N1, N2, N3, N4, N5 and N6 are 400rpm, 600rpm, 800rpm, 1000rpm, 1200rpm and 1400rpm, respectively.
4. The dehydration control method based on microphone judgment eccentricity according to claim 3, characterized in that: m1, M2, M3, M4, and M5 respectively indicate that the rotation speed reaches a preset noise limit corresponding to N2, the rotation speed reaches a preset noise limit corresponding to N3, the rotation speed reaches a preset noise limit corresponding to N4, the rotation speed reaches a preset noise limit corresponding to N5, and the rotation speed reaches a preset noise limit corresponding to N6.
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| CN111101327A (en) * | 2019-12-31 | 2020-05-05 | 合肥美的洗衣机有限公司 | Method and device for detecting tub collision of clothes treatment device and clothes treatment device |
| CN111286918A (en) * | 2020-03-24 | 2020-06-16 | 青岛海尔洗衣机有限公司 | Dewatering control method of washing machine and washing machine |
| CN111321552A (en) * | 2020-02-26 | 2020-06-23 | 青岛海尔洗衣机有限公司 | Washing machine control method and washing machine |
| CN113215771A (en) * | 2021-03-25 | 2021-08-06 | 惠而浦（中国）股份有限公司 | Method and system for controlling rotating speed of drum washing machine |
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| CN113215771A (en) * | 2021-03-25 | 2021-08-06 | 惠而浦（中国）股份有限公司 | Method and system for controlling rotating speed of drum washing machine |
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