CN114687119A - Control method of washing machine and washing machine - Google Patents

Control method of washing machine and washing machine Download PDF

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Publication number
CN114687119A
CN114687119A CN202011619116.5A CN202011619116A CN114687119A CN 114687119 A CN114687119 A CN 114687119A CN 202011619116 A CN202011619116 A CN 202011619116A CN 114687119 A CN114687119 A CN 114687119A
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China
Prior art keywords
washing machine
metal detector
voltage
metal
output
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Pending
Application number
CN202011619116.5A
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Chinese (zh)
Inventor
李传东
尹俊明
黄振兴
许升
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Haier Washing Machine Co Ltd
Haier Smart Home Co Ltd
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Qingdao Haier Washing Machine Co Ltd
Haier Smart Home Co Ltd
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Publication date
Application filed by Qingdao Haier Washing Machine Co Ltd, Haier Smart Home Co Ltd filed Critical Qingdao Haier Washing Machine Co Ltd
Priority to CN202011619116.5A priority Critical patent/CN114687119A/en
Publication of CN114687119A publication Critical patent/CN114687119A/en
Pending legal-status Critical Current

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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 
    • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • 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
    • D06F34/28—Arrangements for program selection, e.g. control panels therefor; Arrangements for indicating program parameters, e.g. the selected program or its progress
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/02—Characteristics of laundry or load
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/44—Current or voltage
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/58—Indications or alarms to the control system or to the user

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

The invention provides a control method of a washing machine and the washing machine, wherein the washing machine comprises a metal detector for detecting whether clothes in the washing machine have metal, and whether the working state of the metal detector is normal or not is judged according to the output voltage of the metal detector and/or the duration of the output voltage of the washing machine in a door opening/closing state. According to the invention, when the door is opened, the output voltage of the metal detector is too large, or the duration of the output voltage is longer, and when the output voltage exists in the metal detector in the door closing state, the metal detector is judged to be abnormal in working state, so that the condition that the metal detector is judged to be abnormal in working state to be metal in the washing machine when the output voltage exists in the metal detector is avoided, and the detection accuracy of the metal detector is improved.

Description

Control method of washing machine and washing machine
Technical Field
The invention belongs to the technical field of mechanical equipment, and particularly relates to a control method of a washing machine and the washing machine.
Background
With the increasing living standard of people, the washing machine has become one of the necessary household appliances in the family, and most people use the washing machine as a main tool for washing clothes. Because people's life rhythm is relatively fast, often forget to check the clothes pocket during the laundry, contain metal parts such as coin, key in the clothes, easily cause the washing machine to send out the abnormal sound when doing washing. In particular, the consequences are even more severe when electronic components such as car keys are present in the pocket of the garment. Even if the user can remember to inspect the pockets of the clothes each time, it is troublesome to inspect the pockets one by one.
Therefore, a washing machine with a metal detector is available on the market, which can detect clothes put into the washing machine to determine whether metal is wrapped in the clothes.
Specifically, a throwing port is arranged on a box body of the washing machine, and a metal detector is arranged on the outer side of the circumference of the throwing port. The metal detector comprises a coil, the coil is electrified to generate a magnetic field, the magnetic field can generate magnetic lines of force, when metal is wrapped in clothes and thrown into the washing machine from the throwing opening, the metal can cut the magnetic lines of force and generate induction voltage corresponding to the magnetic lines of force, and further corresponding induction current is generated. The larger the metal object volume is, the larger the voltage generated by the metal cutting magnetic induction line is.
However, in the above method, when the metal detector itself fails, such as short circuit or open circuit, the detection result of the metal in the washing machine is inaccurate; or, when metal is close to the throwing opening, the metal detector is interfered, and misjudgment is caused.
Chinese patent application No. CN201310683919.0 discloses a washing machine with a metal detector and a control method thereof. The washing machine with the metal detector comprises a main controller, a metal detector and an alarm device, wherein the metal detector and the alarm device are connected with the controller, the metal detector is annular and is arranged on the outer side of the circumference of the circular door, the main controller detects whether clothes put into the washing machine have metal objects or not through signals output by the metal detector, and the alarm device is controlled to give an alarm when the metal objects are detected.
In the scheme, the detection result of the metal detector is easily influenced by the metal detector and the metal close to the metal detector outside the washing machine, so that the detection result of the metal detector is inaccurate, and the condition of misjudgment is caused.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The invention aims to solve the technical problems that the detection result of a metal detector of the existing washing machine is inaccurate and misjudgment is easy to occur, and provides a control method of the washing machine and the washing machine thereof, so that the metal detector of the washing machine can detect the metal put into the washing machine more accurately, the misjudgment is avoided, and the detection accuracy of the metal detector is improved.
In order to solve the technical problems, the invention adopts the technical scheme that: a control method of a washing machine includes a metal detector for detecting whether clothes in the washing machine have metal, and judging whether the working state of the metal detector is normal according to the output voltage of the metal detector and/or the duration of the output voltage of the washing machine in a door opening/closing state.
Further, when the washing machine is in a door closing state, if the voltage V output by the metal detector is greater than 0, the metal detector is judged to be abnormal in operation.
Further, a first voltage value V is preset0Said V is0If the voltage V output by the metal detector is more than or equal to V when the washing machine is in a door closing state and the door is more than or equal to 00And controlling the washing machine to stop running.
Further, the first duration of the output voltage is presetTime t0If the voltage V output by the metal detector is more than 0 and the duration time t of the output voltage is more than or equal to t when the washing machine is in a door opening state0And judging that the metal detector works abnormally.
Further, a second voltage value V is preset1Said V is1If the voltage V output by the metal detector is more than or equal to V when the washing machine is in the door opening state1And the duration t of the output voltage is more than or equal to t0And if the metal detector works abnormally, the metal detector is judged to work abnormally, and the washing machine is controlled to stop running.
Further, a second duration t of the output voltage is preset0', said t0’＞t0If the voltage V output by the metal detector is more than 0 and the duration time t of the output voltage is more than or equal to t when the washing machine is in a door opening state0And if yes, judging that the metal detector works abnormally, and controlling the washing machine to stop running.
Further, the preset voltage value V2Said V is2＞＞V1When the washing machine is in the door-opening state, if the voltage V output by the metal detector is more than or equal to V2And if the metal detector works abnormally, the metal detector is judged to work abnormally, and the washing machine is controlled to stop running.
Furthermore, the washing machine comprises an alarm device, and when the metal detector works normally under the condition that the washing machine is opened, if the voltage V output by the metal detector is more than or equal to V1When the alarm is started, the alarm device is controlled to alarm;
when the metal detector works abnormally, the alarm device is controlled not to give an alarm.
Further, the washing machine controls the alarm device not to give an alarm in a door closing state.
The invention also provides a washing machine which is controlled by the control method of the washing machine according to any one of the technical schemes.
After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects.
1. Through under the state of opening the door, metal detector output voltage is too big, perhaps output voltage's duration is longer, under the state of closing the door, when metal detector has output voltage, judge that metal detector operating condition is unusual, avoided when metal detector has output voltage, misjudge the condition that there is the metal in the washing machine with metal detector operating condition unusual, improved the accuracy that metal detector detected.
2. When the washing machine is in a door closing state, if the voltage V output by the metal detector is larger than 0, the metal detector is judged to have a fault, or metal exists outside the washing machine close to the metal detector but not in the washing machine, so that the metal detector is judged to be in abnormal operation, the condition that the metal detector is judged to be in abnormal operation is effectively avoided, and the detection accuracy of the metal detector is ensured.
3. When the washing machine is in a door-closed state, if the voltage V output by the metal detector is0If V is greater than 0, the metal detector is judged to be abnormal in work, and the condition of misjudgment of the metal detector can be avoided; when V is more than or equal to V0When the metal detector fails, the washing machine is controlled to stop running, a user can be reminded to maintain the washing machine, and potential safety hazards caused by the fact that the washing machine still runs when the metal detector fails are avoided.
4. When the washing machine is in the door opening state, if the voltage V output by the metal detector is more than 0 and the duration time t of the output voltage is more than or equal to t0And the metal detector is judged to be in fault, and the metal detector is judged to be in abnormal operation, so that the condition of misjudgment of the metal detector is avoided, and the detection accuracy of the metal detector is ensured.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a flow chart of a control method of the present invention;
fig. 2 is a flow chart of another control method of the present invention.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 and 2, the present invention discloses a control method of a washing machine and a washing machine thereof. The washing machine includes a metal detector for detecting whether laundry in the washing machine carries metal. The washing machine is provided with a feeding opening, and the metal detector is arranged on the feeding opening.
The metal detector comprises a coil, and the coil can generate a magnetic field when being electrified, and the magnetic field can generate magnetic lines. When the clothes are wrapped with metal objects and thrown into the washing machine from the throwing opening, the metal objects will cut the magnetic lines of force and generate corresponding induced voltage. The larger the metal object volume is, the larger the voltage generated by the metal object cutting magnetic induction line is.
The invention judges whether the working state of the metal detector is normal or not according to the output voltage of the metal detector or the duration time of the output voltage of the washing machine in the door opening state. When the door is opened, the output voltage of the metal detector is too large, or the duration of the output voltage is long, and the working state of the metal detector is judged to be abnormal.
And judging whether the working state of the metal detector is normal or not according to the output voltage of the metal detector or the duration of the output voltage of the washing machine in the door closing state. And when the output voltage of the metal detector exists in the closed state, judging that the working state of the metal detector is abnormal.
By means of the mode, the condition that the metal detector works abnormally is judged to be metal in the washing machine by mistake when the metal detector outputs voltage is avoided, and detection accuracy of the metal detector is improved.
In an embodiment of the present invention, when the washing machine is in a door-closed state, if the voltage V output by the metal detector is greater than 0, it is determined that the metal detector is in an abnormal operation state.
Specifically, no clothes are thrown into the washing machine when the washing machine is in a door-closed state. At the moment, if the voltage V output by the metal detector is greater than 0, the metal detector is judged to have a fault; alternatively, metal is present outside the washing machine near the metal detector, rather than metal being thrown into the washing machine. Therefore, the metal detector is judged to be abnormal in work, the condition that the abnormal state of the metal detector is judged to be metal in the washing machine is effectively avoided, and the detection accuracy of the metal detector is ensured.
As an originalIn another embodiment of the present invention, as shown in FIG. 1, the first voltage value V is preset0Said V is0Is greater than 0. Detecting whether a door body of the washing machine is opened or not;
when the door body is not opened, namely the washing machine is in a door closing state:
if the voltage V output by the metal detector0If more than V is more than 0, the metal detector is judged to be abnormal in work. I.e. when the voltage V output by the metal detector0When the voltage is larger than V & gt 0, the metal detector can detect the voltage, but the detected voltage is small, metal possibly exists near the metal detector outside the washing machine, at the moment, the metal detector is judged to be abnormal in work, and the condition that the metal detector judges by mistake can be avoided.
If the voltage V output by the metal detector is more than or equal to V0And controlling the washing machine to stop running. I.e. when V is greater than or equal to V0In time, the voltage value output by the metal detector is larger and exceeds the conventional range, namely the interference signal of the metal detector is too large; alternatively, the metal detector itself fails, such as: the metal detector is disconnected, at the moment, the washing machine is controlled to stop running, a user can be reminded to maintain, the washing machine is prevented from running when the metal detector is in fault, and potential safety hazards are formed when the metal detector is in a disconnected state.
As an embodiment of the present invention, as shown in FIG. 1, the first duration t of the output voltage is preset0。Detecting whether a door body of the washing machine is opened or not;
when the door body is opened, namely the washing machine is in the door opening state:
if the voltage V output by the metal detector is more than 0 and the duration time t of the output voltage is more than or equal to t0And judging that the metal detector works abnormally.
Specifically, in the embodiment, the voltage V > 0 output by the metal detector indicates that the laundry put into the washing machine has metal; when the duration t of the output voltage is more than or equal to t0When it is time, it indicates that the metal detector has a sustained voltage and is of a longer duration. However, when a user puts clothes into the washing machine, if the clothes are wrapped with metal, the metal will cut the magnets during the putting processA force line, causing the metal detector to generate a voltage; once the laundry is completely introduced into the washing machine, the metal detector will not generate a corresponding voltage any more.
Therefore, the duration of the voltage generated by the metal detector is limited, and when the duration t of the output voltage is more than or equal to t0And when the metal detector fails, the metal detector is indicated. At the moment, the metal detector is judged to work abnormally, the condition that the metal detector judges by mistake is avoided, and the detection accuracy of the metal detector is ensured.
Specifically, the user can determine the first duration t according to the daily laundry putting time0Is set, or, the first duration t0Is a factory default value.
Further, the first duration t0Can be set by a user, so that the control of the washing machine is more humanized, and the user can set the corresponding first duration t according to the throwing habit0Such as: t is t05 seconds, 7 seconds, 10 seconds, etc.
When the voltage V output by the metal detector is more than 0, the duration t of the output voltage is less than t0And when the metal is coated on the clothes put into the washing machine, the metal is reminded to the user to be convenient for the user to take out the metal in the washing machine in time.
As an embodiment of the present invention, the second voltage value V is preset1Said V is1Is greater than 0. When the washing machine is in the door-opening state, if the voltage V output by the metal detector is more than or equal to V1And the duration t of the output voltage is more than or equal to t0And if the metal detector works abnormally, the metal detector is judged to work abnormally, and the washing machine is controlled to stop running.
In this embodiment, when the voltage V output by the metal detector is greater than or equal to V1When the voltage value is larger, the voltage value output by the metal detector is larger; the duration t of the output voltage is more than or equal to t0Indicating that the output voltage of the metal detector has lasted for a longer time.
Therefore, the metal detector of the washing machine is in failure; alternatively, the washing machine has a large volume of metal put into it, such as: the notebook computer can seriously affect the operation of the washing machine, and has greater potential safety hazard.
At the moment, the metal detector is judged to be abnormal in work, so that the condition of misjudgment is avoided; the washing machine is controlled to stop running, so that potential safety hazards brought to washing of the washing machine by metal objects with large volumes are avoided.
As another embodiment of the present invention, as shown in FIG. 2, the second duration t of the output voltage is preset0', said t0’＞t0。
When the door body is opened, namely the washing machine is in a door opening state:
if the voltage V output by the metal detector is more than 0 and the duration time t of the output voltage is more than or equal to t0And if yes, judging that the metal detector works abnormally, and controlling the washing machine to stop running.
In the embodiment, when the voltage V output by the metal detector is greater than 0, the metal detector is indicated to have the output voltage, but the duration t of the output voltage is more than or equal to t0' i.e., the duration of the output voltage is long.
Therefore, the metal volume detected by the metal detector is large, the washing effect of the washing machine is seriously influenced, and even clothes are damaged; or, the metal detector of the washing machine is out of order.
At the moment, the metal detector is judged to be abnormal in work, so that the condition of misjudgment is avoided; the washing machine is controlled to stop running, so that potential safety hazards brought to washing of the washing machine by metal objects with large volumes are avoided; the potential safety hazard brought to the washing machine by a metal detector which is likely to have a fault is avoided.
If the voltage V output by the metal detector is more than 0 and the duration t of the output voltage0≤t＜t0' judging that the metal detector works abnormally.
The voltage V output by the metal detector is more than 0, and the duration t of the output voltage0≤t＜t0' indicating that no metal object with large volume exists in the washing machine, but the metal detector has a fault and the fault degree is low.
At the moment, the metal detector is judged to be abnormal in work, and the condition of misjudgment is avoided; because metal objects with large volume do not exist in the washing machine and the fault degree of the metal detector is light, the washing machine does not need to be controlled to stop running, and the influence on the washing machine for washing clothes is avoided.
As still another embodiment of the present invention, the preset voltage value V2Said V is2＞＞V1. When the washing machine is in the door-opening state, if the voltage V output by the metal detector is more than or equal to V2And if the metal detector works abnormally, the metal detector is judged to work abnormally, and the washing machine is controlled to stop running.
In this embodiment, when the voltage V output by the metal detector is greater than or equal to V2The voltage output by the metal detector is large, and exceeds the normal detection range of the metal detector. At this time, it can be determined that the metal detector is working abnormally, such as: the metal detector is open. When the metal detector is in an open circuit, the metal in the washing machine cannot be continuously detected in the subsequent operation process, so that the washing machine is controlled to stop operating, and a user carries out troubleshooting and maintenance to ensure that the metal detector can continuously operate.
As another embodiment of the present invention, the washing machine includes an alarm device. When the washing machine is in the door-opening state and the metal detector works normally, if the voltage V output by the metal detector is more than or equal to V1And then controlling an alarm device to alarm.
A second voltage value V1Is a preset value, in particular, the second voltage value V1The coin is a unitary coin passing through the input port and outputting voltage by the metal detector. When the metal detector detects metal objects with the volume larger than that of the unitary coin, the alarm device is controlled to give an alarm to remind a user of taking out the metal objects in the washing machine. When the metal detector detects the metal object with the volume smaller than that of the one-dimensional coin, the metal object can not cause great interference on the washing of the clothes, and an alarm is not needed.
When the metal detector works abnormally, the alarm device is controlled not to give an alarm.
The alarm device in the embodiment can only alarm when the metal detector works normally, so that the situation of false alarm of the metal detector in an abnormal working state is effectively avoided, and the alarm accuracy of the alarm device is ensured.
As another embodiment of the invention, the alarm device is controlled not to alarm when the washing machine is in a door-closed state; controlling the washing machine to be in a door opening state, and firstly judging whether the metal detection device is in a normal working state or not; if yes, controlling the metal detection device to control the alarm device to alarm according to the detected voltage; otherwise, when the metal detection device is in an abnormal working state, the alarm device is controlled not to give an alarm, so that the false alarm condition is prevented.
In the embodiment, the user cannot put clothes into the washing machine when the washing machine is in a door-closed state, and at the moment, the alarm device is controlled not to give an alarm, so that the condition of false alarm of the metal detector in the door-closed state is avoided, and the detection accuracy of the metal detector is ensured.
In one embodiment of the present invention, the alarm device prestores the alarm accumulated value, that is, the alarm device controls the alarm accumulated value to be added by one every time the alarm device alarms.
Specifically, the washing machine is controlled to be started;
firstly, obtaining an alarm accumulated value K of an initial alarm device of a washing machine1；
At K1Based on the above, the accumulated alarm value is added to one every time the washing machine alarms, namely the accumulated alarm value is K1+ n (n is 1, 2, 3.);
after the washing machine finishes putting clothes, the user can detect the alarm cumulative value K1And + n, obtaining the alarm time n of the time, namely taking the alarm time n of the time as the number of metal objects in the washing machine of the time.
The user can check whether the number of the metal objects taken out from the washing machine is correct or not according to the number of the detected metal objects, so that the metal objects can be fully taken out, and the phenomenon that clothes are damaged and loud noise is generated due to the fact that the metal objects which are not taken out exist in the washing process of the washing machine is avoided.
Or, controlling the washing machine to be started;
firstly, obtaining an alarm accumulated value K of an initial alarm device of a washing machine1；
Detecting the alarm cumulative value K1Returning to zero;
adding one to the alarm accumulated value every time the washing machine gives an alarm, namely the alarm accumulated value is 1, … …, n;
after the washing machine finishes putting clothes, the user can acquire the alarm times n according to the detected alarm accumulated value, namely the alarm times n can be used as the number of metal objects in the washing machine.
The invention also provides a washing machine, and the washing machine is controlled by the control method of the washing machine in any one of the embodiments.
Specifically, the washing machine is provided with a feeding opening, and a door body for opening and closing the feeding opening is arranged on the washing machine. The door body is opened, and a user can put clothes into the washing machine through the putting-in opening; the door body is closed, and the user can not put clothes into the washing machine through the putting-in opening.
The washing machine is provided with a metal detector, the metal detector comprises a coil, the coil is arranged at the putting-in opening, the coil is electrified to generate a magnetic field, and the magnetic field can generate magnetic lines. When the metal object is thrown into the washing machine from the inlet, the metal object will cut the magnetic line of force and generate corresponding induced voltage. The larger the metal object volume is, the larger the voltage generated by the metal object cutting magnetic induction line is.
The washing machine also comprises a controller and an alarm device, wherein the metal detector and the alarm device are respectively and electrically connected with the controller. When the controller detects that the metal detector works normally, the alarm device is controlled to give an alarm according to the voltage detected by the metal detector so as to remind a user whether metal objects exist in the washing machine or not. When the controller detects that the metal detector works abnormally, the alarm device is controlled not to give an alarm, the situation of false alarm is avoided, and the detection accuracy of the metal detector is improved.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. A control method of a washing machine including a metal detector for detecting whether laundry in the washing machine carries metal, characterized in that: and judging whether the working state of the metal detector is normal or not according to the output voltage of the metal detector and/or the duration of the output voltage of the washing machine in the door opening/closing state.
2. The control method of a washing machine as claimed in claim 1, wherein: when the washing machine is in a door closing state, if the voltage V output by the metal detector is larger than 0, the metal detector is judged to work abnormally.
3. The control method of a washing machine as claimed in claim 2, wherein: presetting a first voltage value V0Said V is0If the voltage V output by the metal detector is more than or equal to V when the washing machine is in a door closing state and the door is more than or equal to 00And controlling the washing machine to stop running.
4. The control method of a washing machine as claimed in claim 1, wherein: presetting a first duration t of an output voltage0If the voltage V output by the metal detector is more than 0 and the duration time t of the output voltage is more than or equal to t when the washing machine is in a door opening state0And judging that the metal detector works abnormally.
5. The control method of a washing machine as claimed in claim 4, wherein: presetting a second voltage value V1Said V is1If the voltage V output by the metal detector is more than or equal to V when the washing machine is in the door opening state1And the duration t of the output voltage is more than or equal to t0And if the metal detector works abnormally, the metal detector is judged to work abnormally, and the washing machine is controlled to stop running.
6. The control method of a washing machine as claimed in claim 4, wherein: presetting a second duration t of the output voltage0', said t0’＞t0When the washing machine is in the door-opening state, if the voltage V output by the metal detector is more than 0 and the duration time t of the output voltage is more than or equal to t0And if yes, judging that the metal detector works abnormally, and controlling the washing machine to stop running.
7. The control method of a washing machine as claimed in claim 4, wherein: preset voltage value V2Said V is2＞＞V1When the washing machine is in the door-opening state, if the voltage V output by the metal detector is more than or equal to V2And if the metal detector works abnormally, the metal detector is judged to work abnormally, and the washing machine is controlled to stop running.
8. The control method of a washing machine as claimed in claim 4, wherein: the washing machine comprises an alarm device, and when the washing machine is in a door opening state and the metal detector works normally, if the voltage V output by the metal detector is more than or equal to V1When the alarm is started, the alarm device is controlled to alarm;
when the metal detector works abnormally, the alarm device is controlled not to give an alarm.
9. A control method of a washing machine according to claim 8, characterized in that: when the washing machine is in a door closing state, the alarm device is controlled not to give an alarm.
10. A washing machine characterized by: control by a control method of a washing machine as claimed in any one of the preceding claims 1 to 9.
CN202011619116.5A 2020-12-31 2020-12-31 Control method of washing machine and washing machine Pending CN114687119A (en)

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Application Number Priority Date Filing Date Title
CN202011619116.5A CN114687119A (en) 2020-12-31 2020-12-31 Control method of washing machine and washing machine

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Application Number Priority Date Filing Date Title
CN202011619116.5A CN114687119A (en) 2020-12-31 2020-12-31 Control method of washing machine and washing machine

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