CN101538791B - Clothes weight judgment method for barrel washing machine - Google Patents
Clothes weight judgment method for barrel washing machine Download PDFInfo
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- CN101538791B CN101538791B CN2008100349394A CN200810034939A CN101538791B CN 101538791 B CN101538791 B CN 101538791B CN 2008100349394 A CN2008100349394 A CN 2008100349394A CN 200810034939 A CN200810034939 A CN 200810034939A CN 101538791 B CN101538791 B CN 101538791B
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Abstract
The invention relates to a clothes weight judgment method for barrel washing machine, which comprises that: a motor control circuit of the washing machine controls the rotating speed required by a motor; a signal frequency acquisition circuit acquires an offset D and a rotating speed time difference delta T at a specific rotating time; a parameter hardware records and stores acquired data and sends the data to a rotating speed feedback circuit to adjust the output of the motor control circuit; and finally the clothes weight is calculated by the mean value of the data acquired for many times through a calculation formula. The clothes weight judgment method realizes that low and middle-grade barrel washing machines also have the function of judging the clothes weight, can automatically select washing mode, improves dewatering property, and optimizes washing program.
Description
Technical field
The present invention relates to roller washing machine, relate in particular to the method that roller washing machine is judged clothes weight.
Background technology
Present high-grade roller washing machine is generally through the do washing judgement of weight of the pressure sensing on shock absorber; Promptly when varying in weight; It is different that pressure sensor feeds back to the signal of control panel, judges the weight of clothes with this, the selection program for washing of intelligence.But the cost of washing machine can increase much in the time of owing to this function of increase, can not be applicable to low and middle-grade roller washing machines.And if the washing clothing be the hand washing after directly dewater, pressure sensor then can't be judged.So design a kind of low cost and weight determination methods applied widely, will be very helpful for the lifting of the competitiveness of product in market.
Summary of the invention
The object of the present invention is to provide a kind of roller washing machine to carry out the method that weight is judged, being implemented on the low and middle-grade washing machines also can be according to the selection program for washing of the weight intelligence of clothing.
For reaching above purpose, the solution that the present invention adopted is:
The method that a kind of roller washing machine is judged clothes weight, it comprises:
Motor for washer control circuit control motor reaches desired rotating speed; The signal frequency Acquisition Circuit is image data when specific rotation speeds; The data of gathering preserved in the parameters hardware record, and send to the output of speed feedback circuit adjustment circuit for controlling motor; The data that parameters hardware record is preserved simultaneously through computing formula calculate clothes weight, and select the laundry mode.
Further, the data of collection comprise offset D and rotating speed time difference Δ T.
Offset D is produced by the preceding clothing skewness of dehydration, before dehydration, sets a rotating speed between the 90-110RPM arbitrarily and records.
Set between a deceleration area when rotating speed time difference Δ T is slowed down by motor and record.
Offset D and rotating speed time difference Δ T are repeatedly gathered, calculate clothes weight with its average.
This computing formula is W=a Δ T+bD+c, and a, b, c are coefficient, can change to some extent according to different washing machine characteristics.
Owing to adopted such scheme, the present invention to have following characteristics:
The present invention can make the machine of more low sides have the function that weight is judged; Washing machine dehydration procedure is optimized; Improve the laundry machine dehydration performance; Reduce machine cost.
Description of drawings
Fig. 1 is washing machine running time and rotation speed relation figure;
Fig. 2 is the circuit diagram of crucial measurement parameter record hardware;
Fig. 3 is the circuit diagram of motor for washer control circuit;
Fig. 4 provides the circuit diagram of circuit for the signal frequency collection;
Fig. 5 is the circuit diagram of speed feedback circuit;
Fig. 6 makes washing machine running time and the rotation speed relation figure after average 3 times in the test process.
The flow chart of the method that Fig. 7 judges clothes weight for roller washing machine of the present invention.
The specific embodiment
Below in conjunction with the accompanying drawing illustrated embodiment the present invention is further described.
In a rotation system, under same speed conditions, the experiment body that quality is big more, rotary inertia is big more, and the time of therefore slowing down is just long more, in this case, can carry out weight through acquisition time and judge.The present invention is certain through the radius of gyration, and angular speed is certain, and the inertia force that loads in the rotation system of different quality is different.Washing machine inner tub rotate reach one specify rotating speed (V) after, through calculating from specifying rotating speed (V) to specify the time difference (Δ t) of rotating speed (V ') to judge clothes weight to another one, according to the clothes weight washing machine can intelligence the selection dehydration procedure of doing washing.The performance of under the different loads situation, dewatering is different, and the Intelligence Selection dehydration procedure helps improving the dewatering of washing machine.
The technology that the present invention utilizes the preceding drum of dehydration to carry out the weight judgement deceleration time; It is soft, hardware mainly comprises: washing machine is when making a decision; Each different rotating speed that motor need reach and the parameter that needs to gather, washing machine running time as shown in Figure 1 and rotation speed relation figure.Wherein key parameter record hardware (like Fig. 2) part can be carried out record to the parameter of each collection, the offset that produces like clothes skewness before the D-dehydration of writing down when the 98RPM among Fig. 1 when slowing down 200RPM to the rotating speed time difference Δ T of 100RPM.Motor for washer control circuit (like Fig. 3) makes motor can meet the requirements of rotating speed; During the 0-98RPM of washing machine before dehydration; Be to judge that the weight clothing is distributed in the off-centre in the tube, 150RPM is the water on disrobing, and 200-100RPM (also can carry out according to different washing machine characteristics between deceleration area; As long as can well collect time difference Δ T just can) be in order to test the time difference of a calculated weight; Therefore, carry out the eccentric rotating speed of distinguishing (promptly when keeping 98RPM, gathering a speed discrepancy distinguishes) at 98RPM, 150RPM sloughs unnecessary water.(200RPM is the rotating speed of washing machine drum to the rotating speed of target of 200RPM timing, and the rotating speed and the motor speed of bucket are that a fixing gearratio is arranged.), the rotating speed that speed feedback circuit (like Fig. 5) can reach the motor for washer control circuit is more accurate.The signal frequency collection provides circuit (like Fig. 4) that rotating speed and time in the circuit can be quantized, and obtains the target physical parameter.
The present invention is through gathering the weight of distinguishing clothes different deceleration times, because under same speed conditions, weight is different, rotator inertia is just different.When the unequally loaded clothes is in washing machine drum; By programme-control motor for washer control circuit washing machine inner tub is quickened according to the order that washing machine running time shown in Figure 1 and rotation speed relation figure require; And the offset D of the preceding clothes skewness generation of the dehydration that calculates 98RPM; Arrive 200RPM (the continuous feedback speed of whole process medium speed feedback circuit is for adjustment) at last, program stops the control to the motor for washer control circuit then; Interior bucket reduces speed now, and detects the time Δ T that decelerates to 100RPM.Computing formula by having set in the program is calculated, and calculates the weight of clothes.As shown in Figure 6 to offset D and rotating speed time difference Δ T collection three times (times of collection can increase according to the requirement of precision or reduce), adopt its average to calculate to increase precision.This computing formula is W=a Δ T+bD+c, and coefficient a, b, c can make amendment according to different washing machine characteristics.
The laundry arbor system of different capabilities, different drive ratios can obtain different coefficient a, b, c, and the data that specifically can obtain through experiment are carried out match, calculate.
After judging clothes weight, washing machine can be selected clothing in the different acceleration profile tubes, ensures the laundry machine dehydration performance.
The above-mentioned description to embodiment is can understand and use the present invention for ease of the those of ordinary skill of this technical field.The personnel of skilled obviously can easily make various modifications to these embodiment, and needn't pass through performing creative labour being applied in the General Principle of this explanation among other embodiment.Therefore, the invention is not restricted to the embodiment here, those skilled in the art should be within protection scope of the present invention for improvement and modification that the present invention makes according to announcement of the present invention.
Claims (5)
1. method that roller washing machine is judged clothes weight, it is characterized in that: it comprises:
Motor for washer control circuit control motor reaches desired rotating speed; The signal frequency Acquisition Circuit is image data when specific rotation speeds; The data of gathering preserved in the parameters hardware record, and send to the output of speed feedback circuit adjustment circuit for controlling motor; The data that parameters hardware record is preserved simultaneously through computing formula calculate clothes weight, and select the laundry mode;
Said computing formula is W=a Δ T+bD+c, and wherein D is offset D, and Δ T is the rotating speed time difference, and a, b, c are the coefficient of confirming according to different washing machine characteristics.
2. the method that roller washing machine as claimed in claim 1 is judged clothes weight is characterized in that: the data of collection comprise offset D and rotating speed time difference Δ T.
3. the method that roller washing machine as claimed in claim 2 is judged clothes weight is characterized in that: offset D is produced by the preceding clothing skewness of dehydration, before dehydration, sets a rotating speed between 90～110RPM arbitrarily and records.
4. the method that roller washing machine as claimed in claim 2 is judged clothes weight is characterized in that: record between deceleration area of setting when rotating speed time difference Δ T is slowed down by motor.
5. the method that roller washing machine as claimed in claim 2 is judged clothes weight is characterized in that: offset D and rotating speed time difference Δ T are repeatedly gathered, calculate clothes weight with its average.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100349394A CN101538791B (en) | 2008-03-21 | 2008-03-21 | Clothes weight judgment method for barrel washing machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100349394A CN101538791B (en) | 2008-03-21 | 2008-03-21 | Clothes weight judgment method for barrel washing machine |
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| CN101538791A CN101538791A (en) | 2009-09-23 |
| CN101538791B true CN101538791B (en) | 2012-06-06 |
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Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828382A (en) * | 2011-06-15 | 2012-12-19 | 苏州三星电子有限公司 | Method for judging eccentric state of drum washing machine before dehydrating at high speed |
| WO2014186992A1 (en) * | 2013-05-23 | 2014-11-27 | 无锡小天鹅股份有限公司 | Method for judging weight of clothes for series motor drum washing machine |
| CN104213367B (en) * | 2013-05-31 | 2017-04-19 | 无锡小天鹅股份有限公司 | Method for series excited motor roller washing machine to judge weight of clothes |
| CN104294544A (en) * | 2014-10-16 | 2015-01-21 | 海信容声(广东)冰箱有限公司 | Method and device for weighing clothes in washing machine |
| CN105714510B (en) * | 2014-12-01 | 2018-04-20 | 无锡小天鹅股份有限公司 | Clothing distribution method of adjustment before washing machine and its dehydration |
| CN104593996A (en) * | 2014-12-11 | 2015-05-06 | 广东威灵电机制造有限公司 | Dewatering control method and device and washing machine |
| CN105862313A (en) * | 2016-04-29 | 2016-08-17 | 无锡小天鹅股份有限公司 | Eccentricity sensing method for pulsator washing machine and pulsator washing machine |
| CN105780392A (en) * | 2016-04-29 | 2016-07-20 | 无锡小天鹅股份有限公司 | Detection method of load status of washing machine and dewatering method |
| CN108691149A (en) * | 2017-04-10 | 2018-10-23 | 台达电子工业股份有限公司 | The DC Brushless Motor load measurement method and its device of sensing device |
| CN109695124A (en) * | 2017-10-20 | 2019-04-30 | 青岛海尔滚筒洗衣机有限公司 | A kind of control method and washing machine of washing machine |
| CN109778486B (en) * | 2017-11-13 | 2022-07-08 | 天津海尔洗涤电器有限公司 | Washing machine clothes weighing method and washing machine |
| CN110273260B (en) * | 2019-07-02 | 2021-08-20 | 上海景能电气有限公司 | Non-sensing drum washing machine eccentricity and weighing-based acquisition method |
| CN112726116B (en) * | 2020-12-23 | 2021-12-21 | 珠海格力电器股份有限公司 | Washing machine and weighing method |
| CN113265835B (en) * | 2021-05-27 | 2022-11-15 | 海信冰箱有限公司 | Washing machine dehydration control method and device and washing machine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1224783A (en) * | 1997-12-24 | 1999-08-04 | 松下电器产业株式会社 | Cylindrical washing machine |
| JP3756008B2 (en) * | 1999-02-15 | 2006-03-15 | シャープ株式会社 | Drum washing machine |
-
2008
- 2008-03-21 CN CN2008100349394A patent/CN101538791B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1224783A (en) * | 1997-12-24 | 1999-08-04 | 松下电器产业株式会社 | Cylindrical washing machine |
| JP3756008B2 (en) * | 1999-02-15 | 2006-03-15 | シャープ株式会社 | Drum washing machine |
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| CN101538791A (en) | 2009-09-23 |
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