CN113481694A - Method and device for judging whether clothes of drum washing machine are pushed against door - Google Patents
Method and device for judging whether clothes of drum washing machine are pushed against door Download PDFInfo
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- CN113481694A CN113481694A CN202110737878.3A CN202110737878A CN113481694A CN 113481694 A CN113481694 A CN 113481694A CN 202110737878 A CN202110737878 A CN 202110737878A CN 113481694 A CN113481694 A CN 113481694A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F33/00—Control of operations performed in washing machines or washer-dryers
- D06F33/30—Control of washing machines characterised by the purpose or target of the control
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F33/00—Control of operations performed in washing machines or washer-dryers
- D06F33/30—Control of washing machines characterised by the purpose or target of the control
- D06F33/47—Responding to irregular working conditions, e.g. malfunctioning of pumps
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/08—Control circuits or arrangements thereof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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Abstract
The embodiment of the specification provides a method and a device for judging whether clothes on a drum washing machine are pushed to a door, wherein the method comprises the following steps: determining first power and second power of the loads of the first weight and the second weight in a non-door-butting state respectively, and determining first power and second power of the loads of the first weight and the second weight in a plurality of different door-butting states respectively; determining a first offset threshold boundary value and a second offset threshold boundary value; in the process of testing the efficiency of the whole machine, testing the first power and the second power; and determining whether the load of the drum washing machine is subjected to door butting or not in the whole machine efficiency testing process according to the magnitude relation between the first power and the first door butting boundary value obtained through the test and the magnitude relation between the second power and the second door butting boundary value obtained through the test. According to the invention, two door-abutting boundary values are set firstly, and whether the clothes abut against the door is judged according to the two door-abutting boundary values. If the door is abutted, the weighing error caused by the door abutting can be reduced by adopting a test, so that the accuracy of the overall efficiency test is improved.
Description
Technical Field
One or more embodiments of the present disclosure relate to the field of washing machine technologies, and in particular, to a method and an apparatus for determining whether a laundry is pushed to a door of a drum washing machine.
Background
The existing drum washing machine basically has an intelligent function, and after a user sets a washing mode, the user can automatically weigh clothes, and then the whole washing process is started according to the fact that the weight of the clothes is matched with a corresponding water level. When the whole machine energy efficiency test of the washing machine is carried out, the rated capacity and the half-load rated capacity are tested, the water consumption, the power consumption and the cleaning ratio under the rated capacity and the half-load rated capacity are respectively calculated, and then the energy efficiency grade to which the whole machine energy efficiency belongs is determined, the energy efficiency grade of a general roller washing machine is 5 grade, the energy efficiency of the 1 grade is the highest, and the energy efficiency of the 5 grade is the lowest. And the intelligent dry cloth weighing of the drum washing machine can influence the test of the energy efficiency of the whole machine. During cloth was weighed futilely in intelligence, along with the increase of load, the door of cylinder can be supported to the load, and it is different to support a degree, and the result of weighing also has undulant, and then influences the complete machine efficiency. For example, if 5kg of laundry is weighed to 10kg, the amount of water used increases. For another example, 10kg of laundry is weighed to 5kg, so that the amount of water used is reduced and the washing ratio is lowered. Therefore, a solution for determining whether the laundry is pressed against the door is needed.
Disclosure of Invention
One or more embodiments of the present disclosure describe a method and an apparatus for determining whether a laundry item of a drum washing machine is pushed against a door.
According to a first aspect, there is provided a laundry door-reaching judging method for a drum washing machine, comprising:
determining a first power and a second power of the drum washing machine under the state that the load with the first weight does not abut against the door, and a first power and a second power of the drum washing machine under the state that the load with the second weight does not abut against the door; the first power is the average power of the drum washing machine rotating for the preset number of turns at a first rotating speed, and the second power is the average power of the drum washing machine rotating for the preset number of turns during the process of rising from the first rotating speed to a second rotating speed; the second weight is half the first weight;
determining a first power and a second power of the drum washing machine under a plurality of different door-resisting states of the load with the first weight and a first power and a second power of the drum washing machine under a plurality of different door-resisting states of the load with the second weight respectively;
determining a first door-reaching boundary value corresponding to the first power according to the first power of the drum washing machine under the condition that the first weight of load and the second weight of load respectively do not reach the door, and the first power of the drum washing machine under the condition that the first weight of load and the second weight of load respectively reach a plurality of different door-reaching states;
determining a second door-reaching boundary value corresponding to the second power according to the second power of the drum washing machine under the conditions that the first weight load and the second weight load are not in the door-reaching state respectively, and the second power of the drum washing machine under the conditions that the first weight load and the second weight load are in a plurality of different door-reaching states respectively;
in the whole machine efficiency testing process, testing corresponding first power and second power of the drum washing machine when the load is the first weight or the second weight;
and determining whether the load of the drum washing machine is subjected to door butting or not in the whole machine efficiency testing process according to the magnitude relation between the first power and the first door butting boundary value obtained through the test and the magnitude relation between the second power and the second door butting boundary value obtained through the test.
According to a second aspect, there is provided a laundry door-reaching determination device for a drum washing machine, comprising:
the first determining module is used for determining the first power and the second power of the drum washing machine under the state that the load with the first weight does not abut against the door, and the first power and the second power of the drum washing machine under the state that the load with the second weight does not abut against the door; the first power is the average power of the drum washing machine rotating for the preset number of turns at a first rotating speed, and the second power is the average power of the drum washing machine rotating for the preset number of turns during the process of rising from the first rotating speed to a second rotating speed; the second weight is half the first weight;
the second determining module is used for determining the first power and the second power of the drum washing machine under a plurality of different door-resisting states of the load with the first weight and the first power and the second power of the drum washing machine under a plurality of different door-resisting states of the load with the second weight;
a third determining module, configured to determine a first door reaching threshold corresponding to the first power according to the first power of the drum washing machine in a non-door reaching state of the first weight of the load and the first power of the drum washing machine in a plurality of different door reaching states of the second weight of the load, respectively;
a fourth determining module, configured to determine a second door reaching threshold corresponding to the second power according to a second power of the drum washing machine when the first weight of the load and the second weight of the load are in a non-door reaching state, and a second power of the drum washing machine when the first weight of the load and the second weight of the load are in a plurality of different door reaching states;
the power testing module is used for testing corresponding first power and second power of the drum washing machine when the load is the first weight or the second weight in the whole machine efficiency testing process;
and the door-abutting judging module is used for determining whether the load of the drum washing machine abuts against the door in the whole efficiency testing process according to the magnitude relation between the first power and the first door-abutting boundary value obtained through the test and the magnitude relation between the second power and the second door-abutting boundary value obtained through the test.
In the method and the device for judging whether clothes are pushed against a door of a drum washing machine provided by the embodiment of the specification, a first pushing door boundary value and a second pushing door boundary value are set, and then whether the clothes are pushed against the door is judged in a complete machine efficiency test according to the two pushing door boundary values. If the door is abutted, the weighing error caused by the door abutting can be reduced by adopting a test, so that the accuracy of the overall efficiency test is improved.
Drawings
In order to more clearly illustrate the embodiments of the present specification or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present specification, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a flowchart illustrating a method for determining whether a laundry item of a drum washing machine is pushed against a door according to an embodiment of the present disclosure.
Detailed Description
The scheme provided by the specification is described below with reference to the accompanying drawings.
As shown in fig. 1, an embodiment of the present application provides a method for determining whether a laundry item of a drum washing machine is pushed to a door, the method including steps S110 to S160 as follows:
s110, determining a first power and a second power of the drum washing machine under the state that the load with the first weight does not abut against the door, and a first power and a second power of the drum washing machine under the state that the load with the second weight does not abut against the door;
the first power is the average power of the drum washing machine rotating for the preset number of turns at a first rotating speed, and the second power is the average power of the drum washing machine rotating for the preset number of turns during the process of rising from the first rotating speed to a second rotating speed; the second weight is half the first weight.
Wherein, the first weight and the second weight can be determined according to the loading capacity of the drum washing machine, for example, the loading capacity of the drum washing machine is 10kg, the first weight can be 10kg, and the second weight is 5 kg.
Wherein, the first rotating speed and the second rotating speed can be set according to requirements, for example, the first rotating speed is set to 88-93 revolutions per minute, and the second rotating speed is set to 150 revolutions per minute.
Wherein the preset number of turns can be selected as desired, for example, 10 turns. In practice, the motor may be controlled to increase the rotation speed of the drum from zero to the first rotation speed, and when the rotation speed of the drum is stable, the average power of 10 revolutions of the drum is calculated. Of course, in order to further improve the detection accuracy, the average power of 20 rotations of the drum may be calculated, and then the average power of 20 rotations may be divided by 2 to obtain the average power of 10 rotations of the drum, so as to obtain the first power.
Wherein the second power is an average power calculated in the process of the drum washing machine rising from the first rotating speed to the second rotating speed, and is not the average power at the second rotating speed. For example, in the course of increasing the drum washing machine from the first rotation speed to the second rotation speed, the drum may rotate 30 revolutions, the first 10 revolutions may be selected, and then the average power of the first 10 revolutions is calculated as the second power.
It can be understood that the above mentioned non-abutting door means that the laundry in the drum does not contact the drum door during the rotation of the drum washing machine. In the step, the clothes in the roller can be artificially placed on the inner side of the roller, the roller is prevented from contacting the roller when rotating, and the door-not-pressed state is achieved, so that the first power and the second power are determined in the door-not-pressed state.
S120, determining a first power and a second power of the drum washing machine under a plurality of different door-resisting states of the load with the first weight, and a first power and a second power of the drum washing machine under a plurality of different door-resisting states of the load with the second weight;
it can be understood that various door-abutting states can be classified according to the degree of the laundry in the drum contacting the drum door. In this step, the degree of the clothes contacting the drum door can be artificially controlled when the clothes are placed, so that a plurality of different door-resisting states can be realized, and the first power and the second power can be determined under different door-resisting states.
Assuming that three gate-reaching states are set, in this step S120, the first power and the second power of the first weight and the second weight of the load in the three gate-reaching states respectively need to be determined, so that a total of 3 first powers and 3 second powers are obtained for the first weight of the load. Similarly, for the second weight of the load, a total of 3 first powers and 3 second powers are also obtained.
S130, determining a first door-reaching boundary value corresponding to first power according to the first power of the drum washing machine under the condition that the first weight load and the second weight load are not in door-reaching states respectively, and the first power of the drum washing machine under the condition that the first weight load and the second weight load are in a plurality of different door-reaching states respectively;
the first door-against threshold value is used for distinguishing whether the clothes in the drum are pressed against the door according to the first power. The first weight of the load has a first power in the door-open state, and the second weight of the load has a first power in the door-open state. Assuming that there are a door-pushing states, the first weight of the load corresponds to a first power, and the second weight of the load also corresponds to a first power.
In particular implementation, in S130, the first cut-off threshold value may be determined as follows:
selecting the first back-door boundary value in a first value range; the minimum value of the first value range is greater than the maximum value of the first power of the drum washing machine under the state that the load of the first weight and the load of the second weight respectively do not lean against the door; the maximum value of the first value range is smaller than the minimum value of the first power of the drum washing machine under the conditions that the load of the first weight and the load of the second weight are respectively in a plurality of different door-resisting states.
That is, the first threshold boundary value is greater than all of the first powers in the no-threshold state and less than all of the first powers in all-threshold states. Therefore, the first power in the door-reaching state and the first power in the door-not-reaching state can be distinguished through the first door-reaching boundary value.
S140, determining a second door-reaching boundary value corresponding to second power according to the second power of the drum washing machine under the conditions that the first weight load and the second weight load are not in door-reaching states respectively and the second power of the drum washing machine under the conditions that the first weight load and the second weight load are in different door-reaching states respectively;
the second door-against threshold value is used for distinguishing whether the clothes in the drum are pressed against the door according to the second power. The first weight of the load has a second power in the door-out state, and the second weight of the load has a second power in the door-out state. Assuming that there are a door-pushing states, the load of the first weight corresponds to a second power, and the load of the second weight also corresponds to a second power.
In a specific implementation, the second cut-off boundary value may be determined in S140 as follows:
selecting the second gating threshold value within a second value range; the minimum value of the second value range is greater than the maximum value of the second power of the drum washing machine in the door-out state of the first weight load and the second weight load respectively, and the maximum value of the second value range is less than the minimum value of the second power of the drum washing machine in a plurality of different door-out states of the first weight load and the second weight load respectively.
That is, the second threshold boundary value is greater than all of the second powers in the no-threshold state and less than all of the second powers in all of the threshold states.
S150, in the process of testing the efficiency of the whole machine, testing the corresponding first power and second power of the drum washing machine when the load is the first weight or the second weight;
it is understood that the above steps S110 to S140 are preparation steps, the purpose of which is to determine the first cut-off threshold and the second cut-off threshold, and S150 and S160 are real application steps, and two cut-off thresholds determined before are used for the cut-off judgment.
During the whole machine efficiency testing process, particularly during intelligent dry cloth weighing, clothes with certain weight are placed in the roller, the motor is controlled to raise the rotating speed of the roller to a first rotating speed and stabilize the rotating speed, and then the average power of the preset number of turns of the roller in rotation is calculated to serve as the first power in the testing process. And then, increasing the first rotating speed to a second rotating speed, taking the average power of the preset number of turns of the roller in the increasing process as the second power in the testing process, and then respectively comparing the two powers in the testing process with corresponding door-abutting boundary values so as to determine whether door abutting occurs or not.
It is understood that if 10 turns are selected for the preset number of turns in S110, 10 turns are also selected when the first power and the second power are determined in step S150.
In step S150, the weight of the laundry may be selected as the first weight or the second weight, and although the weight is unknown to the washing machine, the washing machine may determine whether the door is half-loaded or full-loaded in some way when the door is reached. If the rated capacity of the washing machine is the first weight, after the clothes with the first weight are placed in the washing machine, the washing machine can judge that the door is full through some mode subsequently when the door is pushed. If the second weight of clothes is placed in the washing machine, the washing machine can judge that the door is half-load door in the following process when the door is pushed. The specific determination method will be described in detail below.
And S160, determining whether the load of the drum washing machine is subjected to door butting or not in the whole machine efficiency testing process according to the magnitude relation between the first power and the first door butting boundary value obtained through the test and the magnitude relation between the second power and the second door butting boundary value obtained through the test.
In the step, whether the load is subjected to door butting or not is determined according to the magnitude relation between the first power and the first door butting boundary value obtained through the test and the magnitude relation between the second power and the second door butting boundary value obtained through the test. The specific determination process may include: if the first power obtained by the test is greater than the first door-abutting boundary value and the second power obtained by the test is greater than the second door-abutting boundary value, the load of the drum washing machine abuts against the door in the whole machine efficiency test process.
Of course, the degree of the door contact can be determined in addition to whether the door contact occurs. The method provided by the invention can also comprise the following steps S170-S190:
s170, calculating a first power difference value corresponding to the drum washing machine under each door-resisting state of the first weight load and a second power difference value corresponding to the drum washing machine under each door-resisting state of the second weight load, wherein the first weight is the rated capacity of the drum washing machine;
wherein the first power difference is a difference between the first power and the second power of the drum washing machine in each door-resisting state of the first weight of load; the second power difference is the difference between the first power and the second power of the drum washing machine in each door-abutting state of the second weight of load.
Assuming that there are 3 kinds of door-touching states, 3 first power difference values can be calculated for the load of the first weight; for the second weight of the load, 3 first power difference values may also be calculated.
Wherein, the first weight is rated capacity, and is full load when the door is pushed; the second weight is half of rated capacity, and is half loaded when the door is being abutted.
S180, determining a corresponding door-resisting load threshold according to the first power difference value and the second power difference value;
wherein the door-support load threshold is used to distinguish the degree of door-support load, here only whether it is a half-loaded door or a full-loaded door.
In a specific implementation, S180 may specifically determine the door-counteracting load threshold by using the following method:
selecting the door-resisting load threshold value in a third value range, wherein the minimum value of the third value range is larger than the maximum value of second power difference values corresponding to the drum washing machine under various door-resisting states of the load with the second weight; the maximum value of the third value range is smaller than the minimum value of the first power difference values corresponding to the drum washing machine under various door-resisting states of the load with the first weight.
That is, the door-abutting load threshold is greater than all the second power difference values corresponding to the second weight and less than all the first power difference values corresponding to the first weight, so that the power difference values corresponding to the first weight and the second weight can be distinguished, and further the first weight and the second weight can be distinguished.
S190, in the whole machine efficiency testing process, calculating a third power difference value, and determining the door-resisting load degree of the drum washing machine in the whole machine efficiency testing process according to the magnitude relation between the third power difference value and the door-resisting load threshold value;
wherein the third power difference is a difference between the first power obtained by the test and the second power obtained by the test. It can be seen that the third power difference is the difference between the first power and the second power calculated during the test.
In specific implementation, the third power difference is compared with the door-resisting load threshold value, so that the door-resisting load degree of the drum washing machine in the whole machine efficiency testing process is judged. The degree of the door-resisting load can be specifically determined as follows: if the third power difference value is smaller than the door supporting load threshold value, the drum washing machine is a half-load door supporting in the whole machine efficiency testing process; if the third power difference is greater than or equal to the door-supporting load threshold, the drum washing machine is fully loaded with the door-supporting in the whole machine efficiency test process.
According to the steps, whether the clothes abut against the door or not can be judged in the whole machine efficiency test. If the door is abutted after judgment, certain measures can be taken to reduce the weighing error caused by the door abutment in the dry cloth weighing, for example, the rotating time of the roller is prolonged, the clothes on the outer side of the door are rotated to the inner side as far as possible, the clothes are not abutted against the door, then the weighing is carried out, and the accuracy of the overall efficiency test is further improved.
In specific implementation, since the second power is calculated during the rotation speed rising process, some abnormal data may be generated during the rising process due to the unstable rotation state, and therefore some measures may be taken to remove the abnormal data in the calculation process of the second power. The process of determining the second power of the drum washing machine, whether the clothes is in the first weight or the second weight, whether the clothes is in the door-abutting state or the door-not-abutting state, whether the process is in the preparation step of determining the first door-abutting boundary value and the second door-abutting boundary value or in the whole machine efficiency test process, may include the following steps S200 to S230:
s200, in the process that the first rotating speed of the drum washing machine is increased to the second rotating speed, obtaining a plurality of power values of the drum washing machine in the process of rotating for preset turns, and sequencing the power values according to the obtaining time to obtain a corresponding power sequence;
that is, the power values are obtained at a plurality of time points of the preset number of turns, for example, one power value is obtained every second, and then the power values are sorted according to the sequence of the time points, so as to obtain the power sequence.
S210, acquiring power values of a plurality of preset positions in the power sequence, and determining a first range determination parameter according to the power values of the plurality of positions; determining a statistical parameter of the power sequence, and determining a second range determination parameter according to the statistical parameter;
wherein, preset the position and can set up as required, for example, select three preset the position: two fifths, and three fifths. If the positions corresponding to one fifth, two fifths, or three fifths are not integers, assuming that there are n power values in the power sequence, the rounding can be performed after the one fifth, two fifths, or three fifths are obtained.
Wherein the first range determination parameter and the second range determination parameter are parameters for determining a subsequent power confidence range.
In a specific implementation, in S210, the first range determining parameter may be calculated by using a first formula, where the first formula includes:
M＝2×max{Q2-Q1,Q3-Q2}
wherein M is the first range determining parameter, Q1Is the power value at said fifth, Q2Is the power value at said one fifth position, Q3Is the power value at the three fifths position.
The preset statistical parameters may include standard deviation and mean.
In a specific implementation, the process of determining the second range determination parameter in S210 may include: and increasing the second range determination parameter from zero according to a preset step length, and stopping increasing the second range determination parameter when 95% of power values of the second range determination parameter increased in the power sequence all fall within an interval [ mu-0.8 XNXdelta, mu +0.8 XNXdelta ] to obtain the required second range determination parameter.
S220, determining a power confidence range according to the first range determination parameter and the second range determination parameter;
in particular implementations, the power confidence range may be calculated using a second formula, the second formula including:
P＝[Q1-1.2×N×M,Q3+1.2×N×M]
wherein P is the power confidence range.
And S230, eliminating abnormal power values in the power sequence according to the power confidence range, calculating the average value of each power value left after the abnormal power values are eliminated, and taking the average value as the second power.
It can be understood that the power values falling outside the power confidence range are taken as abnormal power values, then the abnormal power values are removed, the average value of each removed power value is calculated, and the average value is taken as the second power, so that the influence of abnormal data on the second power can be greatly reduced, and the accuracy of the second power is improved.
In a second aspect, the present invention provides a device for determining whether a laundry item of a drum washing machine is pushed against a door, the device comprising:
the first determining module is used for determining the first power and the second power of the drum washing machine under the state that the load with the first weight does not abut against the door, and the first power and the second power of the drum washing machine under the state that the load with the second weight does not abut against the door; the first power is the average power of the drum washing machine rotating for the preset number of turns at a first rotating speed, and the second power is the average power of the drum washing machine rotating for the preset number of turns during the process of rising from the first rotating speed to a second rotating speed; the second weight is half the first weight;
the second determining module is used for determining the first power and the second power of the drum washing machine under a plurality of different door-resisting states of the load with the first weight and the first power and the second power of the drum washing machine under a plurality of different door-resisting states of the load with the second weight;
a third determining module, configured to determine a first door reaching threshold corresponding to the first power according to the first power of the drum washing machine in a non-door reaching state of the first weight of the load and the first power of the drum washing machine in a plurality of different door reaching states of the second weight of the load, respectively;
a fourth determining module, configured to determine a second door reaching threshold corresponding to the second power according to a second power of the drum washing machine when the first weight of the load and the second weight of the load are in a non-door reaching state, and a second power of the drum washing machine when the first weight of the load and the second weight of the load are in a plurality of different door reaching states;
the power testing module is used for testing corresponding first power and second power of the drum washing machine when the load is the first weight or the second weight in the whole machine efficiency testing process;
and the door-abutting judging module is used for determining whether the load of the drum washing machine abuts against the door in the whole efficiency testing process according to the magnitude relation between the first power and the first door-abutting boundary value obtained through the test and the magnitude relation between the second power and the second door-abutting boundary value obtained through the test.
It is understood that, for the device provided in the embodiment of the present invention, for the explanation, examples, and beneficial effects of the related contents, reference may be made to the corresponding parts in the foregoing method, and details are not described here.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, as for the apparatus embodiment, since it is substantially similar to the method embodiment, the description is relatively simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
Those skilled in the art will recognize that, in one or more of the examples described above, the functions described in this disclosure may be implemented in hardware, software, hardware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present invention should be included in the scope of the present invention.
Claims (10)
1. A method for judging whether clothes of a drum washing machine are pushed to a door is characterized by comprising the following steps:
determining a first power and a second power of the drum washing machine under the state that the load with the first weight does not abut against the door, and a first power and a second power of the drum washing machine under the state that the load with the second weight does not abut against the door; the first power is the average power of the drum washing machine rotating for the preset number of turns at a first rotating speed, and the second power is the average power of the drum washing machine rotating for the preset number of turns during the process of rising from the first rotating speed to a second rotating speed; the second weight is half the first weight;
determining a first power and a second power of the drum washing machine under a plurality of different door-resisting states of the load with the first weight and a first power and a second power of the drum washing machine under a plurality of different door-resisting states of the load with the second weight respectively;
determining a first door-reaching boundary value corresponding to the first power according to the first power of the drum washing machine under the condition that the first weight of load and the second weight of load respectively do not reach the door, and the first power of the drum washing machine under the condition that the first weight of load and the second weight of load respectively reach a plurality of different door-reaching states;
determining a second door-reaching boundary value corresponding to the second power according to the second power of the drum washing machine under the conditions that the first weight load and the second weight load are not in the door-reaching state respectively, and the second power of the drum washing machine under the conditions that the first weight load and the second weight load are in a plurality of different door-reaching states respectively;
in the whole machine efficiency testing process, testing corresponding first power and second power of the drum washing machine when the load is the first weight or the second weight;
and determining whether the load of the drum washing machine is subjected to door butting or not in the whole machine efficiency testing process according to the magnitude relation between the first power and the first door butting boundary value obtained through the test and the magnitude relation between the second power and the second door butting boundary value obtained through the test.
2. The method of claim 1,
the determining a first cut-off boundary value corresponding to the first power includes:
selecting the first back-door boundary value in a first value range; the minimum value of the first value range is greater than the maximum value of the first power of the drum washing machine under the state that the load of the first weight and the load of the second weight respectively do not lean against the door; the maximum value of the first value range is smaller than the minimum value of the first power of the drum washing machine under the conditions that the load with the first weight and the load with the second weight are respectively in a plurality of different door-resisting states;
the determining a second cut-off boundary value corresponding to the second power includes:
selecting the second gating threshold value within a second value range; the minimum value of the second value range is greater than the maximum value of the second power of the drum washing machine in the door-out state of the first weight load and the second weight load respectively, and the maximum value of the second value range is less than the minimum value of the second power of the drum washing machine in a plurality of different door-out states of the first weight load and the second weight load respectively.
3. The method of claim 2, wherein the determining whether the load of the drum washing machine is against the door during the performance test comprises:
if the first power obtained by the test is greater than the first door-abutting boundary value and the second power obtained by the test is greater than the second door-abutting boundary value, the load of the drum washing machine abuts against the door in the whole machine efficiency test process.
4. The method of claim 1, further comprising:
calculating a first power difference value corresponding to the drum washing machine under each door-resisting state of the load with the first weight and a second power difference value corresponding to the drum washing machine under each door-resisting state of the load with the second weight, wherein the first weight is the rated capacity of the drum washing machine; wherein the first power difference is a difference between the first power and the second power of the drum washing machine in each door-resisting state of the first weight of load; the second power difference is the difference between the first power and the second power of the drum washing machine under each door-resisting state of the second weight of load;
determining a corresponding door-resisting load threshold according to the first power difference value and the second power difference value;
in the whole machine efficiency testing process, calculating a third power difference value, and determining the door-resisting load degree of the drum washing machine in the whole machine efficiency testing process according to the magnitude relation between the third power difference value and the door-resisting load threshold value; wherein the third power difference is a difference between the first power obtained by the test and the second power obtained by the test.
5. The method of claim 4, wherein determining the corresponding threshold load threshold based on the first power difference and the second power difference comprises:
selecting the door-resisting load threshold value in a third value range, wherein the minimum value of the third value range is larger than the maximum value of second power difference values corresponding to the drum washing machine under various door-resisting states of the load with the second weight; the maximum value of the third value range is smaller than the minimum value of the first power difference values corresponding to the drum washing machine under various door-resisting states of the load with the first weight.
6. The method of claim 5, wherein determining the door-holding load degree of the drum washing machine during the overall performance test according to the magnitude relationship between the third power difference and the door-holding load threshold value comprises:
if the third power difference value is smaller than the door supporting load threshold value, the drum washing machine is a half-load door supporting in the whole machine efficiency testing process; if the third power difference is greater than or equal to the door-supporting load threshold, the drum washing machine is fully loaded with the door-supporting in the whole machine efficiency test process.
7. Method according to claim 1, characterized in that the process of determining a second power of the drum washing machine in the or each door-holding state for the load of the first or second weight comprises:
in the process that the first rotating speed of the drum washing machine is increased to the second rotating speed, acquiring a plurality of power values of the drum washing machine in the process of rotating for preset turns, and sequencing the plurality of power values according to the acquisition time to obtain corresponding power sequences;
acquiring power values of a plurality of preset positions in the power sequence, and determining a first range determination parameter according to the power values of the plurality of positions; determining a statistical parameter of the power sequence, and determining a second range determination parameter according to the statistical parameter;
determining a power confidence range according to the first range determination parameter and the second range determination parameter;
and rejecting abnormal power values in the power sequence according to the power confidence range, calculating the average value of each power value remained after the abnormal power values are rejected, and taking the average value as the second power.
8. The method of claim 7, wherein the plurality of locations comprises two-fifths, and three-fifths locations; determining corresponding first range determination parameters according to the power values of the multiple positions, and calculating the first range determination parameters by adopting a first formula, wherein the first formula comprises:
M＝2×max{Q2-Q1,Q3-Q2}
wherein M is the first range determining parameter, Q1Is the power value at said fifth, Q2Is the power value at said one fifth position, Q3Is the power value at the three fifths position;
and/or the preset statistical parameters comprise standard deviation and mean value; the determining a second range determination parameter according to the statistical parameter includes: and increasing the second range determination parameter from zero according to a preset step length, and stopping increasing the second range determination parameter when 95% of power values of the second range determination parameter increased in the power sequence all fall within an interval [ mu-0.8 XNXdelta, mu +0.8 XNXdelta ] to obtain the required second range determination parameter.
9. The method of claim 8, wherein the power confidence range is calculated using a second formula comprising:
P＝[Q1-1.2×N×M,Q3+1.2×N×M]
wherein P is the power confidence range.
10. A laundry door-contact judging device of a drum washing machine, comprising:
the first determining module is used for determining the first power and the second power of the drum washing machine under the state that the load with the first weight does not abut against the door, and the first power and the second power of the drum washing machine under the state that the load with the second weight does not abut against the door; the first power is the average power of the drum washing machine rotating for the preset number of turns at a first rotating speed, and the second power is the average power of the drum washing machine rotating for the preset number of turns during the process of rising from the first rotating speed to a second rotating speed; the second weight is half the first weight;
the second determining module is used for determining the first power and the second power of the drum washing machine under a plurality of different door-resisting states of the load with the first weight and the first power and the second power of the drum washing machine under a plurality of different door-resisting states of the load with the second weight;
a third determining module, configured to determine a first door reaching threshold corresponding to the first power according to the first power of the drum washing machine in a non-door reaching state of the first weight of the load and the first power of the drum washing machine in a plurality of different door reaching states of the second weight of the load, respectively;
a fourth determining module, configured to determine a second door reaching threshold corresponding to the second power according to a second power of the drum washing machine when the first weight of the load and the second weight of the load are in a non-door reaching state, and a second power of the drum washing machine when the first weight of the load and the second weight of the load are in a plurality of different door reaching states;
the power testing module is used for testing corresponding first power and second power of the drum washing machine when the load is the first weight or the second weight in the whole machine efficiency testing process;
and the door-abutting judging module is used for determining whether the load of the drum washing machine abuts against the door in the whole efficiency testing process according to the magnitude relation between the first power and the first door-abutting boundary value obtained through the test and the magnitude relation between the second power and the second door-abutting boundary value obtained through the test.
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