CN104652092A - Eccentricity detection method for full-automatic washing machine - Google Patents

Eccentricity detection method for full-automatic washing machine Download PDF

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Publication number
CN104652092A
CN104652092A CN201310603886.4A CN201310603886A CN104652092A CN 104652092 A CN104652092 A CN 104652092A CN 201310603886 A CN201310603886 A CN 201310603886A CN 104652092 A CN104652092 A CN 104652092A
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washing machine
eccentric
value
pressure sensor
detected
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CN104652092B (en
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许升
吕艳芬
李海涛
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Qingdao Haier Washing Machine Co Ltd
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Haier Group Corp
Qingdao Haier Washing Machine Co Ltd
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Abstract

The invention discloses an eccentricity detection method for a full-automatic washing machine. The full-automatic washing machine comprises a box body, an outer barrel and an inner barrel, the outer barrel is hung in the box body through a suspender, bottom legs are arranged at the bottom of the box body, n bearing stress value detection pressure sensors are arranged on each of different positions of two ends of the suspender or the bottom legs, wherein n is more than or equal to 2. The eccentricity detection includes steps that S10, detecting the bearing stress values of several positions through the pressure sensors; S20, judging whether the inner barrel is eccentric according to the bearing stress values of the several positions. The eccentricity detection method uses more than two pressure sensors to detect the eccentricity of the washing machine, the pressure sensors have good sensitivity, and the pressure sensors are capable of improving the eccentricity detection precision and confirming the eccentric clothes position from different directions so as to improve the eccentricity detection precision.

Description

A kind of eccentric detection method of automatic washing machine
Technical field
The present invention relates to washing machine detection field, particularly relate to a kind of eccentric detection method of automatic washing machine.
Background technology
Due to the water absorbing capacity of washings, the inconsistent of material in washing machine use procedure, easily there is the problem of washings skewness.Washings skewness can cause the rotating shaft of washing machine to depart from center, under washing machine operates in eccentric state.Eccentric state can cause interior bucket to clash into casing or control lever, produces vibration or noise, the problem of even there will be washing machine displacement when bias is serious, jumping or damaging.
The laundry amounts of a Chinese patent literature publication number CN1611662A roller washing machine and the checkout gear of eccentricity value and detection method thereof, implementation step is as follows: the cylinder rotated, encase the urceolus of cylinder, and the shock absorber that can weaken urceolus vibration that both sides, urceolus bottom are arranged, the sliding part upper end of the shock absorber in test section is provided with permanent magnet, be provided with to export with the fixed part inner top side of the shock absorber in the position corresponding from permanent magnet and change according to the distance of permanent magnet and export in the roller washing machine of the test section that different voltage value MR sensors is formed, its detection method is divided for and is detected the detection-phase of laundry amounts by the voltage value exported according to the test section of both sides shock absorber and detect eccentricity value according to the voltage difference that the test section of both sides shock absorber exports and obtain detection-phase.
This patent detects by MR sensor the bias that the length difference between the length variations of shock absorber or both sides shock absorber supporting urceolus measures washing machine, this mode will be set up and is complicated device for detecting length, and the own rigidity of the precision and the shock absorber that detect, retractility are relevant, therefore detection architecture can be subject to the impact of shock absorber, accuracy of detection is not high, and it is comparatively blunt to react.In addition, by the restriction of shock absorber installation site, the position of eccentric clothing cannot be determined accurately.
Summary of the invention
In order to overcome the defect of prior art, technical problem to be solved of the present invention is the eccentric detection method proposing a kind of automatic washing machine, has higher accuracy of detection and detection sensitivity, accurately can determine the position of eccentric clothing.
For reaching this object, the present invention by the following technical solutions:
The eccentric detection method of a kind of automatic washing machine provided by the invention, described automatic washing machine has casing, is located at the outer barrel of described box house and is positioned at the bucket of described tub, described outer barrel is mounted in described casing by suspension rod, the bottom of described casing is provided with footing, diverse location on the two ends or footing of described suspension rod is respectively equipped with the pressure sensor that n is detected load-bearing stress value, wherein n >=2, described eccentricity detecting is realized by following steps:
S10: the load-bearing stress value being detected multiple position by described multiple pressure sensor;
S20: determine whether interior bucket exists bias according to the load-bearing stress value of more multiple position.
Further technical scheme of the present invention: step S20 comprises the following steps:
S210: presupposed off-center reference value M;
S211: detect and record the detected value G of n pressure sensor 11, G 12g 1n;
S212: calculate G 11, G 12g 1nthe difference DELTA G of middle maximum and minimum of a value,
Wherein, maximum G max=max{G 1j, j=1,2,3 ... n},
Minimum of a value G min=min{G 1j, j=1,2,3 ... n}, Δ G=G max-G min;
S213: more described difference DELTA G and the size of eccentric reference value M preset;
If Δ G < is M, then assert to there is bias, described washing machine enters the water smoking;
If Δ G >=M, then assert not bias, described washing machine enters the eccentric adjusting stage.
Further technical scheme of the present invention: step S20 comprises the following steps:
S220: presupposed off-center reference value M and rotary reference value R and detect number of times m;
S221: first time is detected and records the detected value G of n pressure sensor 11, G 12g 1n, wherein n>=2;
S222: compare detected value G 11, G 12g 1nsize, tentatively judge the position of eccentric clothing according to comparative result;
S223: described interior bucket rotates R degree, again detects and records the detected value G of n pressure sensor i1, G i2g in;
S224: compare detected value G i1, G i2g insize, verify the position of eccentric clothing according to comparative result;
S225: repeat S223 step and S224 step p-1 time, wherein i=2,3,4 ... p, p>=2; Determine the position of eccentric clothing according to comparative result, and calculate the whole detected value G detected for the p time p1, G p2g pnthe difference DELTA G of middle maximum and minimum of a value; Wherein, maximum G max=max{G pj, j=1,2,3 ... n},
Minimum of a value G min=min{G pj, j=1,2,3 ... n}, Δ G=G max-G min;
S226: more described difference DELTA G and the size of described eccentric reference value M;
If Δ G < is M, then assert to there is bias, described washing machine enters the water smoking,
If Δ G >=M, then assert not bias, described washing machine enters the described eccentric adjusting stage.
Further technical scheme of the present invention: the quantity n=4 of described pressure sensor, described detection number of times m=2.
Further technical scheme of the present invention: described pressure sensor is fixed on the junction of described suspension rod and holder or the junction of described suspension rod and drift angle.
Beneficial effect of the present invention is:
Control method for washing machine provided by the invention, plural pressure sensor is adopted to carry out eccentricity detecting to washing machine, pressure sensor has good sensitivity, the precision of eccentricity detecting can be improved, and adopt plural sensor can determine the position of eccentric clothing from different azimuth, the position of eccentric clothing can be determined more accurately.The eccentricity detecting stage of control method for washing machine is judged by preliminary and verified that two steps determine eccentric clothing position, can improve the accuracy of eccentricity detecting.In addition, if find in above-mentioned eccentricity detecting process there is eccentricity issues in washing machine, and this washing machine also has eccentric adjustment function, effectively can eliminate the eccentricity issues that washing machine produces.
Accompanying drawing explanation
Fig. 1 is the flow chart of the eccentric detection method of the automatic washing machine that the specific embodiment of the invention provides;
Fig. 2 is the general flow chart of the control method for washing machine that the specific embodiment of the invention provides;
Fig. 3 is the flow chart of the job step in the eccentricity detecting stage that the specific embodiment of the invention provides;
Fig. 4 is the flow chart of the job step of the eccentric adjusting stage that the specific embodiment of the invention provides;
Fig. 5 is the structure chart of the washing machine that the specific embodiment of the invention provides, and pressure sensor is positioned at footing place;
Fig. 6 is the structure chart of the washing machine that the specific embodiment of the invention provides, and pressure sensor is positioned at suspension rod place.
In figure:
1, casing; 2, outer barrel; 3, suspension rod; 4, footing; 5, pressure sensor; 6, impeller; 21, holder; 11, drift angle.
Detailed description of the invention
Technical scheme of the present invention is further illustrated by detailed description of the invention below in conjunction with accompanying drawing.
Embodiment one
As shown in Figure 1, be the flow chart of eccentric detection method of the automatic washing machine provided in embodiment one.
The eccentric detection method of a kind of automatic washing machine provided in embodiment one, implement as follows:
SO step: open washing machine, the washing of drum type washing machine time described in user preset is xmin, and rinsing times is y time, usual x=5min or 10min or 15min, y=2 or 3.
S1 step: washing machine enters the washing stage, washs clothing, and the washing stage is mainly in order to remove the spot of washing machine.
S2 step: after washing terminates, first time enters the eccentricity detecting stage, and under the eccentricity detecting stage, the controller of washing machine carries out eccentricity detecting by the plural pressure sensor 5 pairs of washing machines be connected with controller.Adopt plural pressure sensor 5 can determine the position of eccentric clothing from different azimuth, improve the accuracy of eccentricity detecting
S3 step: enter water smoking first time, dewater to clothing, first time dehydration mainly reduces the content of washings in clothing.
S4 step: enter rinse stage, carry out rinsing to clothing, rinse stage mainly cleans cleaning solution, namely uses the process of clean water clothing.
S5 step: after a clothing rinsing, enter the eccentricity detecting stage, under the eccentricity detecting stage, controller controls plural pressure sensor 5 pairs of washing machines and carries out eccentricity detecting.
S6 step: enter the water smoking, dewaters to clothing again, and entering water smoking and first time specifically, to enter water smoking working method similar, mainly removes the content of washing agent in water, provide cleaning effect.
S7 step: repeat S1 and S2 step x time, terminates the washing stage.When user sets repeatedly rinsing times, after each rinse stage terminates, all need to dewater after the eccentricity detecting stage, to improve cleaning performance, and then enter in next step.
S8 step: after rinse stage terminates, enters the eccentricity detecting stage for the last time, and under the eccentricity detecting stage, controller controls plural pressure sensor 5 pairs of washing machines and carries out eccentricity detecting.
S9 step: enter the drying stage, clothing is dried.
S10 step: terminate the drying stage, washing machine is out of service.
Because two or more pressure sensor 5 cooperatively interacts under the effect of washing machine controller, can go up from different directions and the eccentric situation of washing machine is detected, effectively can improve the sensitivity of whole detection system.In addition, pressure sensor also can replace with pulling force sensor.
As shown in Figure 2, be the flow chart of job step in eccentricity detecting stage in embodiment one.
Described eccentricity detecting is realized by following steps:
S10: the load-bearing stress value being detected multiple position by described multiple pressure sensor 5;
S20: determine whether interior bucket exists bias according to the load-bearing stress value of more multiple position.
Embodiment two
Further scheme, the eccentric detection method in eccentricity detecting stage is as follows:
(1) described washing machine detects eccentric number of times is 1 time.
S210 step: presupposed off-center reference value M in the controller of washing machine;
S211 step: controller detects the pressure of washing machine internal clothing gravity generation by plural pressure sensor 5, and the detected value G of the whole pressure of controller record 11, G 12g 1n, wherein n>=2, represent the quantity of pressure sensor 5;
S212 step: described controller calculates G 11, G 12g 1nthe difference DELTA G of middle maximum and minimum of a value,
Wherein, maximum G max=max{G 1j, j=1,2,3 ... n},
Minimum of a value G min=min{G 1j, j=1,2,3 ... n}, Δ G=G max-G min;
S213: the more described difference DELTA G of described controller and the size of eccentric reference value M preset;
If Δ G < is M, then assert to there is bias, described washing machine enters the water smoking;
If Δ G >=M, then assert not bias, described washing machine enters the eccentric adjusting stage.
Embodiment three
Further scheme, the eccentric detection method in eccentricity detecting stage is as follows:
Be with the difference of embodiment two: detecting number of times is p time.
S220 step: presupposed off-center reference value M and rotary reference value R and detection number of times p in the controller of washing machine.
When washing machine starts, the initial value of plural pressure sensor 5 makes zero by controller, does not now place clothing in washing machine, and initial value all makes zero by each washing machine use procedure, is conducive to preventing accumulated error.
S221 step: controller detects the pressure of washing machine internal clothing gravity generation by plural pressure sensor 5, and the detected value G of the whole pressure of controller record 11, G 12g 1n, wherein n>=2, represent the quantity of pressure sensor 5, and namely whole sensor first times detects above-mentioned pressure, obtains detected value.
S222 step: controller compares detected value G 11, G 12g 1nsize, tentatively judge the position of eccentric clothing according to comparative result.Suppose G 12value maximum, then illustrate that washing machine exists eccentric, and the heaviest position of eccentric thing is positioned at second sensor place place.
S223 step: controller controls motor and drives interior bucket to rotate R degree, and controller detects the pressure of washing machine internal clothing gravity generation again by pressure sensor 5, the detected value G of the whole pressure of controller record i1, G i2g in, wherein i=2,3,4 ... m, namely whole sensors detects above-mentioned pressure i-th time, obtains detected value.
That is, after in S222 step, the first side has been detected, controller can control motor and drive interior bucket to rotate R degree, then carries out above-mentioned pressure detecting, and this process can repeat according to accuracy of detection, and this is also relevant with the number of pressure sensor 5.Suppose that pressure sensor 5 is only two, then need to detect number of times p more, should at least ensure washing machine half revolution, could realize comprehensively detecting the eccentric situation of each position of washing machine.
S224 step: described controller compares detected value G i1, G i2g insize, verify the position of eccentric clothing according to comparative result, verification method normally makes washing machine rotate 180 °, i.e. rotary reference value R=180 ° in S222 step.Such first time is detected as the G of maximum of points 12, this time detecting be minimum point, thus it is eccentric to demonstrate washing machine existence further, and the heaviest position of eccentric thing is positioned at second sensor place place.By S222 step and S224 step, namely preliminary determining step and verification step, can determine eccentric clothing position, can improve the accuracy of eccentricity detecting.
S225 step: repeat S223 step and S224 step p-1 time, determine the position of eccentric clothing according to comparative result, and described controller calculates whole detected value G of the p time detection p1, G p2g pnthe difference DELTA G of middle maximum and minimum of a value.
Concrete computational process is as follows: the detected value G that controller is whole pjsize.
According to detected value G pjsize find out maximum G max=max{G pj, j=1,2,3 ... n} and minimum of a value G min=min{G pj, j=1,2,3 ... n}.Wherein, G pjrepresent the detected pressure value of a jth pressure sensor 5 in detecting for the p time.
Controller calculates the difference DELTA G=G of described maximum and minimum of a value max-G min.
S226 step: controller compares the size of difference DELTA G and eccentric reference value M.
If Δ G < is M, eccentricity detecting stops, and washing machine enters the water smoking.
If Δ G >=M, washing machine enters the described eccentric adjusting stage or gives the alarm, and reminds user of service's manual handle.
As shown in Figure 4, be the structure chart of the washing machine provided in embodiment one, pressure sensor is positioned at footing place.
A kind of washing machine is additionally provided in embodiment one, comprise controller, casing 1, interior bucket, outer barrel 2 and suspension rod 3, it is inner that outer barrel 2 is positioned at casing 1, interior bucket is positioned at the inside of outer barrel 2, and the first end of suspension rod 3 is connected with casing 1, and the second end of suspension rod 3 is connected with outer barrel 2, the bottom of casing 1 is provided with footing 4, the bottom of interior bucket is provided with motor, and controller is connected with motor, and the bottom of described interior bucket is provided with impeller 6.Pressure sensor 5 is fixed on footing 4, and footing 4 is comparatively responsive to the Gravity changer of interior bucket.
As shown in Figure 5, be the structure chart of the washing machine provided in embodiment one, pressure sensor is positioned at suspension rod place.
Be with the difference of Fig. 4: pressure sensor 5 is fixed on the junction of suspension rod 3 and holder 21, and same suspension rod 3 is also very responsive to the Gravity changer of interior bucket.In addition, pressure sensor 5 can also be fixed on the junction of suspension rod 3 and drift angle 11.
Be preferably the quantity n=4 of pressure sensor 5 in the present embodiment, detect number of times m=2, rotary reference value R=180 °.The job step in eccentricity detecting stage is as follows:
First, controller detects the pressure of washing machine internal clothing gravity generation by four pressure sensors 5, and the detected value G of the whole pressure of controller record 11, G 12, G 13, G 14.Then, controller compares detected value G 11, G 12, G 13, G 14size, tentatively judge the position of eccentric clothing according to comparative result.Suppose G 12value maximum, then illustrate that washing machine exists eccentric, and the heaviest position of eccentric thing is positioned at second sensor place place.Then, controller control motor drives interior bucket to rotate 180 °, i.e. rotary reference value R=180 °.Controller detects the pressure of washing machine internal clothing gravity generation again by pressure sensor 5, the detected value G of the whole pressure of controller record 21, G 22, G 23, G 24, namely whole sensor second time detects above-mentioned pressure, obtains detected value.Controller compares detected value G 21, G 22, G 23, G 24size.At this moment, first time is detected as the G of maximum of points 12, this time detecting be minimum point, thus it is eccentric to demonstrate washing machine existence further, and the heaviest position of eccentric thing is positioned at second sensor place place.Then, determine the position of eccentric clothing according to comparative result, and controller calculates whole detected value G that second time detects 21, G 22, G 23, G 24the difference DELTA G of middle maximum and minimum of a value.Finally, controller compares the size of difference DELTA G and eccentric reference value M,
If Δ G < is M, eccentricity detecting stops, and washing machine enters the water smoking.
If Δ G >=M, washing machine enters the described eccentric adjusting stage or gives the alarm, and reminds user of service's manual handle.
Embodiment four
As shown in Figures 2 and 3, be the general flow chart of the control method for washing machine provided in embodiment four and the flow chart of the job step of eccentric adjusting stage respectively.
Embodiment four is with the difference of embodiment two or embodiment three: the job step further defining the eccentric adjusting stage, and concrete steps are as follows:
S40 step: washing machine enters washes the even adjusting stage, when washing machine is in and washes the even adjusting stage, washing machine also can carry out rinsing to clothing, but the meeting total consuming time of usually washing the even adjusting stage is less than the always consuming time of normal rinsing, to accelerate the process of eccentric adjusting stage.
S41 step: wash after the even adjusting stage terminates, controller controls washing machine and performs S221 step and obtain difference DELTA G to S225 step.
S42 step: controller compares the size of difference DELTA G and eccentric reference value M,
If Δ G < is M, eccentric adjustment stops, and washing machine enters the water smoking;
If Δ G >=M, washing machine enters washes the even adjusting stage.
S43 step: repeat S40 step to S42: step, if after washing machine enters for l time and washes the even adjusting stage, the size that controller compares difference DELTA G and eccentric reference value M is Δ G >=M, then controller controls washing machine operation suspension, and gives the alarm, and clothing shakes loose by prompting user mode manually, after clothing shakes loose, washing machine terminates to suspend, and continues to run, enters S41 step.
That is, maximum the entering for l time of washing machine washes the even adjusting stage, and more than l time, eccentricity issues is processed, and gives the alarm and reminds user of service manual handle, more than l time or adjust eccentricity issues afterwards for the l time and be resolved and just enter the water smoking.Wash the process of even adjusting stage, the S221 step all needing washing machine to perform in embodiment one carries out eccentricity detecting to S225 step at every turn.
In the present embodiment, preferred washing machine enters the number of times l=3 washing the even adjusting stage, and this is obtained by repeatedly practice, as long as namely after washing machine adjust fully automatically, eccentricity issues still in unsolved situation just prompting user of service artificially process.
S44 step: repeat S40 step to S43 step, until washing machine enters the water smoking.
The present invention is described by preferred embodiment, and those skilled in the art know, without departing from the spirit and scope of the present invention, can carry out various change or equivalence replacement to these characteristic sum embodiments.The present invention is not by the restriction of specific embodiment disclosed herein, and other embodiments fallen in the claim of the application all belong to the scope of protection of the invention.

Claims (5)

1. the eccentric detection method of an automatic washing machine, described automatic washing machine has casing (1), is located at the inner outer barrel (2) of described casing (1) and is positioned at the inner bucket of described outer barrel (2), described outer barrel (2) is mounted in described casing (1) by suspension rod (3), the bottom of described casing (1) is provided with footing (4), it is characterized in that: the diverse location on the two ends of described suspension rod (3) or footing (4) is respectively equipped with the pressure sensor (5) that n is detected load-bearing stress value, wherein n >=2;
Described eccentricity detecting is realized by following steps:
S10: the load-bearing stress value being detected multiple position by described multiple pressure sensor (5);
S20: determine whether interior bucket exists bias according to the load-bearing stress value of more multiple position.
2. the eccentric detection method of automatic washing machine according to claim 1, is characterized in that:
Step S20 comprises the following steps:
S210: presupposed off-center reference value M;
S211: detect and record the detected value G of n pressure sensor (5) 11, G 12g 1n;
S212: calculate G 11, G 12g 1nthe difference DELTA G of middle maximum and minimum of a value,
Wherein, maximum G max=max{G 1j, j=1,2,3 ... n},
Minimum of a value G min=min{G 1j, j=1,2,3 ... n}, Δ G=G max-G min;
S213: more described difference DELTA G and the size of eccentric reference value M preset;
If Δ G < is M, then assert to there is bias, described washing machine enters the water smoking;
If Δ G >=M, then assert not bias, described washing machine enters the eccentric adjusting stage.
3. the eccentric detection method of automatic washing machine according to claim 1, is characterized in that:
Step S20 comprises the following steps:
S220: presupposed off-center reference value M and rotary reference value R and detect number of times m;
S221: first time is detected and records the detected value G of n pressure sensor (5) 11, G 12g 1n, wherein n>=2;
S222: compare detected value G 11, G 12g 1nsize, tentatively judge the position of eccentric clothing according to comparative result;
S223: described interior bucket rotates R degree, again detects and records the detected value G of n pressure sensor (5) i1, G i2g in;
S224: compare detected value G i1, G i2g insize, verify the position of eccentric clothing according to comparative result;
S225: repeat S223 step and S224 step p-1 time, wherein i=2,3,4 ... p, p>=2; Determine the position of eccentric clothing according to comparative result, and calculate the whole detected value G detected for the p time p1, G p2g pnthe difference DELTA G of middle maximum and minimum of a value;
Wherein, maximum G max=max{G pj, j=1,2,3 ... n},
Minimum of a value G min=min{G pj, j=1,2,3 ... n}, Δ G=G max-G min;
S226: more described difference DELTA G and the size of described eccentric reference value M;
If Δ G < is M, then assert to there is bias, described washing machine enters the water smoking,
If Δ G >=M, then assert not bias, described washing machine enters the described eccentric adjusting stage.
4. the eccentric detection method of automatic washing machine according to claim 3, is characterized in that:
The quantity n=4 of described pressure sensor (5);
Described detection number of times m=2.
5. the eccentric detection method of automatic washing machine according to claim 1, is characterized in that:
Described pressure sensor (5) is fixed on the junction of described suspension rod (3) with holder (21) or the junction of described suspension rod (3) and drift angle (11).
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CN114481548A (en) * 2020-11-13 2022-05-13 无锡小天鹅电器有限公司 Clothes treatment equipment, control method and device thereof and storage medium
CN114481548B (en) * 2020-11-13 2023-11-03 无锡小天鹅电器有限公司 Laundry treating apparatus, control method and device thereof, and storage medium

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