CN103306105A - Method for judging load weight of pulsator washing machine - Google Patents
Method for judging load weight of pulsator washing machine Download PDFInfo
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- CN103306105A CN103306105A CN2013102111926A CN201310211192A CN103306105A CN 103306105 A CN103306105 A CN 103306105A CN 2013102111926 A CN2013102111926 A CN 2013102111926A CN 201310211192 A CN201310211192 A CN 201310211192A CN 103306105 A CN103306105 A CN 103306105A
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Abstract
The invention relates to a method for judging the load weight of a pulsator washing machine, which can solve the problem of the inconsistency of weighing curves among the same model of washing machines through a system friction correction function. The method comprises the following steps: inputting a signal to a washing machine procedure controller after a washing procedure is started, and driving a motor to rotate and stop, wherein a group of back electromotive force pulses can be generated after the motor is stopped, and a computer board carries out fuzzy weighing judgment through reading the quantity of the pulses; and finally correcting in a water-replenishing manner to finally judge the load weight. The method has the benefits that the function of intelligently judging the clothing weight of the pulsator washing machine, in particular a large-capacity pulsator washing machine is realized, the water inlet level can be automatically selected, the washing performance is improved, and the washing procedure is optimized.
Description
Technical field
Embodiment relates to a kind of method of judging the rotary drum washing machine load weight.
Background technology
What the method for existing judgement rotary drum washing machine load weight was used is the method for gathering counter electromotive force of motor.Change, stop for signal drive motor of washing machine procedure controller input, can produce one group of back emf pulse after motor stops, by gathering the number of pulses that the unequally loaded counter electromotive force of motor produces, fit to the curve of weighing under each belt tension.The numerical value of weighing with empty bucket is judged current belt tension, selects the corresponding curve of weighing; After program for washing started, the motor-driven impeller changeed, and by the comparison of weigh numerical value and curve numerical value, judged load weight.This method simply is easy to realize, and the low capacity rotary drum washing machine below 10KG is used comparative maturity.But when this method was used at the big above rotary drum washing machine of capacity 10KG, pulse data instability, the overall data zone that occurs gathering under the identical load be narrow, exist than the serious data crossover phenomenon, thereby can't be weighed curve accordingly.Make and can't accurately judge the rotary drum washing machine load weight, for the area that energy consumption is had relatively high expectations, product can't satisfy the efficiency requirement, product competitiveness a little less than.
Summary of the invention
The present invention is directed to existing fuzzy Weighing method on washing machine, can't obtain technical problems such as the corresponding curve of weighing when especially high-capacity washing machine is used, proposed new technology solution; By increasing the load weight value that the moisturizing algorithm is proofreaied and correct first judgement washing machine, make rotary drum washing machine, especially big capacity rotary drum washing machine can accurately be judged load weight.
The method of the judgement rotary drum washing machine load weight of a kind of embodiment according to the present invention, comprise: step 1: after program for washing starts, load weight according to first judgement washing machine, select water inlet water level shelves Di, afterwards with Di shelves beat washing T minute, T1 is after second in time-delay, surveys current water level frequency f; Step 2: according to the value that the value of the current water level frequency f of surveying is proofreaied and correct the load weight of first judgement, come the final decision load weight.
In addition, the method for judgement rotary drum washing machine load weight according to the above embodiment of the present invention can also have following additional technical characterictic:
According to an example of the present invention, step 1 comprises that further carrying out final load by the moisturizing algorithm judges, proofreaies and correct the erroneous judgement situation that heavy load is judged to be little load.
According to an example of the present invention, relatively judge whether moisturizing by current water level frequency f and preset water level frequency Fi.
The aspect that the present invention adds and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Description of drawings
Above-mentioned and/or the additional aspect of the present invention and advantage are from obviously and easily understanding becoming the description of embodiment below in conjunction with accompanying drawing, wherein:
Fig. 1 is the structural representation of general rotary drum washing machine, and 1 is that computerized version, 2 is that suspension rod, 3 is that motor, 4 is that belt, 5 is that clutch, 6 is dehydration barrel;
Fig. 2 is fuzzy function of weighing flow chart;
Fig. 3 is before system friction is proofreaied and correct, the curve of weighing of load;
Fig. 4 is after system friction is proofreaied and correct, the curve of weighing after the match;
Fig. 5 is that the present invention uses the circuit theory diagrams that clothes weight is judged in fuzzy control;
Fig. 6 is the counter electromotive force that motor stops the rotation generation of back inertia;
Fig. 7 is back emf pulse, can be by the size of how much judging load of this umber of pulse;
Fig. 8 is load weight separating capacity schematic diagram;
Fig. 9 is the flow chart of moisturizing bearing calibration.
The specific embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein identical or similar label is represented identical or similar elements or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, only be used for explaining the present invention, and can not be interpreted as limitation of the present invention.
Disclosing hereinafter provides many different embodiment or example to be used for realizing different structure of the present invention.Of the present invention open in order to simplify, hereinafter parts and the setting to specific examples is described.Certainly, they only are example, and purpose does not lie in restriction the present invention.In addition, the present invention can be in different examples repeat reference numerals and/or letter.This repetition is in order to simplify and purpose clearly, itself not indicate the relation between the various embodiment that discuss of institute and/or the setting.In addition, various specific technology and the examples of material that the invention provides, but those of ordinary skills can recognize the property of can be applicable to of other technologies and/or the use of other materials.In addition, first feature described below second feature it " on " structure can comprise that first and second features form the embodiment of direct contact, can comprise that also additional features is formed on the embodiment between first and second features, such first and second features may not be direct contacts.
In description of the invention, need to prove, unless otherwise prescribed and limit, term " installation ", " linking to each other ", " connection " should be done broad understanding, for example, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be directly to link to each other, and also can link to each other indirectly by intermediary, for the ordinary skill in the art, can understand the concrete implication of above-mentioned term as the case may be.
With reference to following description and accompanying drawing, these and other aspects of embodiments of the invention will be known.These describe and accompanying drawing in, some specific implementations in the embodiments of the invention are specifically disclosed, represent to implement some modes of the principle of embodiments of the invention, still should be appreciated that the scope of embodiments of the invention is not limited.On the contrary, embodiments of the invention comprise spirit and interior all changes, modification and the equivalent of intension scope that falls into institute's additional claims.
Through describing embodiment in detail, its example is shown in the drawings now.
As Fig. 1-9, in the present invention's preferred embodiment, a kind of method of judging the rotary drum washing machine load weight, whole process comprise frictional force correction, weight perception, moisturizing correction module etc.At some other embodiment, according to actual needs, whole process comprises frictional force correction and weight perception.In further embodiments, whole process comprises weight perception and moisturizing correction module.Perhaps, in also having some embodiment, whole process only comprises the moisturizing correction module.
Washing machine in process of production, motor position and belt tension there are differences, and in use belt is aging, motor wearing and tearing and electric machine temperature rise, the curve of weighing that make between different washing machines, obtains under the situation such as the each test of identical washing machine there are differences.The invention provides and a kind ofly proofread and correct the method for this otherness with frictional force, the difference that obtains under the different test conditions Mathematical Modeling that the curve utilization comes out of weighing is fitted to unified curve.In the washing machine production process it is carried out frictional force and proofread and correct, make the curve of weighing of same model washing machine have uniformity, the method can be got rid of the influence of extraneous factor, is convenient to blur weigh.
Driven by motor impeller main story t1 second, stop t2 second, anti-pass t3 second, stop t4 second (n time continuously), the computer plate reads the back emf pulse number in the several seconds of stopping, the umber of pulse of accumulating n counter electromotive force obtains the numerical value of weighing, and by this numerical value and the water desorption curve numeric ratio of proofreading and correct with frictional force, carries out the first judgement of weighing.Wherein t1, t3 are that motor can reach the used time of constant speed, and t2, t4 are the time that motor can stop fully to be needed; Accumulative total can more read umber of pulse for n time and reduce error.
Can distinguish substantially through first judgement back loading weight, but for avoiding erroneous judgement that heavy load is judged to be little load, can can't wash because the deficiency of intaking causes, propose the method that moisturizing is proofreaied and correct.The load weight difference, the washing back exerts an influence also different to the water level frequency.By test, after the load of Different Weight is washed through certain time interval T, water level frequency maximum changing value difference.Behind the program start, according to the load weight of first judgement, select water inlet water level shelves Di, afterwards with Di shelves beat washing T minute, T1 is after second in time-delay, surveys current water level frequency, proofreaies and correct the value of weighing according to the water level frequency values again, the final decision load weight.
Need experimental tool: 1 of 16Kg washing machine, standard termination cloth 12kg, one of title, one of dynamometer.The present invention will be for the big capacity rotary drum washing machine of 16KG, and Fig. 1 is the diagram that illustrates according to the washing machine of embodiment, load is carried out the differentiation of 4 grades (0-1.36kg is that 1 grade, 1.36kg-4.5kg are that 2 grades, 4.5kg-7.8kg are 3 grades, are 4 grades greater than 7.8kg);
As Fig. 2, present embodiment is tested by fuzzy function of weighing flow chart:
In the present invention's embodiment, carry out following operation: 1. a kind of method of proofreading and correct this otherness with frictional force, at first the difference that obtains under the different test conditions of the specifying model curve of weighing is carried out data acquisition, utilize the data that come out to carry out the normalized of data then, obtain the matched curve of standard Mathematical Modeling.The curve of any this model model machine and the curve of standard Mathematical Modeling compare in the washing machine production process, finishing frictional force proofreaies and correct, make the curve of weighing of same model washing machine have uniformity, the method can be got rid of the influence of extraneous factor, is convenient to blur weigh.2. after program for washing starts, give the input of washing machine procedure controller a signal, drive motors changes, stops, and motor stops the back can producing one group of back emf pulse because of effect of inertia, and the computer plate blurs the judgement of weighing by reading pulse number; 3. can distinguish substantially through first judgement back loading weight, but for avoiding erroneous judgement that heavy load is judged to be little load, can can't wash because the deficiency of intaking causes, propose the method that moisturizing is corrected.The load weight difference, the washing back exerts an influence also different to the water level frequency.By test, after the load of Different Weight is washed through certain time interval T, water level frequency maximum changing value difference.Behind the program start, according to the load weight of first judgement, select water inlet water level shelves Di, afterwards with Di shelves beat washing T minute, T1 is after second in time-delay, surveys current water level frequency, proofreaies and correct the value of weighing according to the water level frequency values again, the final decision load weight.
Specific operation process is as follows:
1, frictional force is proofreaied and correct: before frictional force was proofreaied and correct, as seen load weigh curve such as Fig. 3 had the serious data crossover phenomenon to the pulse data of gathering under the same type identical load, can't obtain judging the curve of weighing of load weight.In process of production washing machine being carried out frictional force proofreaies and correct, with the Mathematical Modeling that comes out it is fitted to the curve of weighing, as shown in Figure 4, the curve of weighing after the match is more convenient for carrying out the judgement of load weight under the situation of having got rid of extraneous factor and washing machine inconsistency;
2, the weight perception: the weight cognitive method that present embodiment adopts is for gathering the method for counter electromotive force of motor, its circuit theory diagrams such as Fig. 5, drive the motor that is used for driving impeller, make motor reach the maximum speed of rotation from initial halted state, disable motor makes the rotation of motor inertia ground and produces inverse electromotive force (as Fig. 6), be back emf pulse (as Fig. 7) through the fuzzy control circuit conversion, judge the weight of load by gathering the back emf pulse number afterwards, its method referenced patent CN102146629A clothes weight method for sensing, after the weight perception, carry out the first judgement of load weight, load weight separating capacity schematic diagram such as Fig. 8 of determining, water inlet causes Di(i=1 according to the weight result of determination,, 4) and the shelves water level;
3, moisturizing is proofreaied and correct: its flow chart such as Fig. 9, intake to the Di shelves with the result that the weight perception is judged, wash T second with Di shelves beat, delay time T1 second, detect the current water level frequency f, if the current water level frequency is less than default water level frequency Fi, then the explanation erroneous judgement judges heavy load for little load, the inflow deficiency, the further moisturizing of washing machine this moment is to Di+1 shelves water level, repeated washing, time-delay, sensed water level frequency, decision process are till detected water level frequency is more than or equal to default water level frequency.After moisturizing was proofreaied and correct, final decision went out load weight.
The proposition of novelty of the present invention proofread and correct the curve and with the thought of the moisturizing algorithm correction value of weighing of weighing with frictional force.Designed a kind of method that accurately is easy to the big capacity rotary drum washing machine of the judgement load weight realized of distinguishing, solved fuzzy drawback of weighing for a long time, namely by introducing the frictional force bearing calibration, the inconsistency of the extraneous factor of having forgone and washing machine is to judging the influence of load weight, and after frictional force is proofreaied and correct, the curve of weighing that standardized makes it have uniformity, and the more convenient weight of carrying out is judged; Introduced the method that moisturizing is proofreaied and correct simultaneously, this method is carried out secondary on the first basis of judging and is judged, the worth accuracy of guaranteeing to weigh serious consequence such as can't normally wash thereby significantly reduce because of inaccurate the causing of weighing.At last, than the fuzzy Weighing method based on the moisturizing algorithm, though can accurately judge load weight equally, this programme simply is easy to realize, and the water and electric saving, more meets the efficiency standard.
Describe and to be understood that in the flow chart or in this any process of otherwise describing or method, expression comprises module, fragment or the part of code of the executable instruction of the step that one or more is used to realize specific logical function or process, and the scope of preferred embodiment of the present invention comprises other realization, wherein can be not according to order shown or that discuss, comprise according to related function by the mode of basic while or by opposite order, carry out function, this should be understood by the embodiments of the invention person of ordinary skill in the field.
In flow chart the expression or in this logic of otherwise describing and/or step, for example, can be considered to the sequencing tabulation for the executable instruction that realizes logic function, may be embodied in any computer-readable medium, use for instruction execution system, device or equipment (as the computer based system, comprise that the system of processor or other can be from the systems of instruction execution system, device or equipment instruction fetch and execution command), or use in conjunction with these instruction execution systems, device or equipment.With regard to this specification, " computer-readable medium " can be anyly can comprise, storage, communication, propagation or transmission procedure be for instruction execution system, device or equipment or the device that uses in conjunction with these instruction execution systems, device or equipment.The example more specifically of computer-readable medium (non-exhaustive list) comprises following: the electrical connection section (electronic installation) with one or more wirings, portable computer diskette box (magnetic device), random-access memory (ram), read-only storage (ROM), can wipe and to edit read-only storage (EPROM or flash memory), fiber device, and portable optic disk read-only storage (CDROM).In addition, computer-readable medium even can be paper or other the suitable media that to print described program thereon, because can be for example by paper or other media be carried out optical scanner, then edit, decipher or handle to obtain described program in the electronics mode with other suitable methods in case of necessity, then it is stored in the computer storage.
Should be appreciated that each several part of the present invention can realize with hardware, software, firmware or their combination.In the above-described embodiment, a plurality of steps or method can realize with being stored in the memory and by software or firmware that suitable instruction execution system is carried out.For example, if realize with hardware, the same in another embodiment, in the available following technology well known in the art each or their combination realize: have for the discrete logic of data-signal being realized the logic gates of logic function, special IC with suitable combinational logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) etc.
Those skilled in the art are appreciated that and realize that all or part of step that above-described embodiment method is carried is to instruct relevant hardware to finish by program, described program can be stored in a kind of computer-readable recording medium, this program comprises one of step or its combination of method embodiment when carrying out.
In addition, each functional unit in each embodiment of the present invention can be integrated in the processing module, also can be that the independent physics in each unit exists, and also can be integrated in the module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, also can adopt the form of software function module to realize.If described integrated module realizes with the form of software function module and during as independently production marketing or use, also can be stored in the computer read/write memory medium.
The above-mentioned storage medium of mentioning can be read-only storage, disk or CD etc.
In the description of this specification, concrete feature, structure, material or characteristics that the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means in conjunction with this embodiment or example description are contained at least one embodiment of the present invention or the example.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete feature, structure, material or the characteristics of description can be with the suitable manner combination in any one or more embodiment or example.
Although illustrated and described embodiments of the invention, for the ordinary skill in the art, be appreciated that without departing from the principles and spirit of the present invention and can carry out multiple variation, modification, replacement and modification to these embodiment that scope of the present invention is by claims and be equal to and limit.
Claims (3)
1. method of judging the rotary drum washing machine load weight comprises:
Step 1: after program for washing starts, according to the load weight of first judgement washing machine, select water inlet water level shelves Di, afterwards with Di shelves beat washing T minute, T1 is after second in time-delay, surveys current water level frequency f;
Step 2: according to the value that the value of the current water level frequency f of surveying is proofreaied and correct the load weight of first judgement, come the final decision load weight.
2. the method for judgement rotary drum washing machine load weight as claimed in claim 1 is characterized in that: step 1 comprises that further carrying out final load by the moisturizing algorithm judges, proofreaies and correct the erroneous judgement situation that heavy load is judged to be little load.
3. as the method for each described judgement rotary drum washing machine load weight of claim 1-2, it is characterized in that: relatively judge whether moisturizing by current water level frequency f and preset water level frequency Fi.
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| CN201310211192.6A CN103306105B (en) | 2013-05-29 | 2013-05-29 | A kind of method judging rotary drum washing machine load weight |
| PCT/CN2013/077206 WO2014190567A1 (en) | 2013-05-29 | 2013-06-13 | Method for determining weight of load of pulsator washing machine |
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| CN201310211192.6A CN103306105B (en) | 2013-05-29 | 2013-05-29 | A kind of method judging rotary drum washing machine load weight |
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Cited By (6)
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| CN105088632A (en) * | 2014-04-15 | 2015-11-25 | 无锡小天鹅股份有限公司 | Washing machine and clothes load determination method |
| CN106048983A (en) * | 2016-07-20 | 2016-10-26 | 惠而浦（中国）股份有限公司 | Detection method for loading capacity and offset of roller washing machine |
| CN106592155A (en) * | 2016-10-31 | 2017-04-26 | 无锡小天鹅股份有限公司 | Washing machine, fuzzy weighing correction method and correction device of washing machine |
| CN107287818A (en) * | 2017-04-25 | 2017-10-24 | 无锡小天鹅股份有限公司 | Washing machine and its economical control and device |
| CN110106664A (en) * | 2018-02-01 | 2019-08-09 | 青岛海尔洗衣机有限公司 | A kind of judgment method and rotary drum washing machine of washing machine bias |
| CN112746432A (en) * | 2019-10-31 | 2021-05-04 | 无锡小天鹅电器有限公司 | Load amount recognition method and device of clothes treatment device and clothes treatment device |
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| CN110106664A (en) * | 2018-02-01 | 2019-08-09 | 青岛海尔洗衣机有限公司 | A kind of judgment method and rotary drum washing machine of washing machine bias |
| CN110106664B (en) * | 2018-02-01 | 2023-08-11 | 青岛海尔洗衣机有限公司 | Method for judging eccentricity of washing machine and pulsator washing machine |
| CN112746432A (en) * | 2019-10-31 | 2021-05-04 | 无锡小天鹅电器有限公司 | Load amount recognition method and device of clothes treatment device and clothes treatment device |
| CN112746432B (en) * | 2019-10-31 | 2022-09-27 | 无锡小天鹅电器有限公司 | Load amount recognition method and device of clothes treatment device and clothes treatment device |
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