CN115748190A - Clothes treatment equipment and control method thereof - Google Patents
Clothes treatment equipment and control method thereof Download PDFInfo
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- CN115748190A CN115748190A CN202111025399.5A CN202111025399A CN115748190A CN 115748190 A CN115748190 A CN 115748190A CN 202111025399 A CN202111025399 A CN 202111025399A CN 115748190 A CN115748190 A CN 115748190A
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- 238000000034 method Methods 0.000 title claims abstract description 48
- 239000000523 sample Substances 0.000 claims abstract description 160
- 239000002184 metal Substances 0.000 claims abstract description 135
- 238000001514 detection method Methods 0.000 claims abstract description 91
- 230000006698 induction Effects 0.000 claims abstract description 8
- 238000004458 analytical method Methods 0.000 claims description 11
- 230000003321 amplification Effects 0.000 claims description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 6
- 238000002474 experimental method Methods 0.000 claims description 5
- 238000005406 washing Methods 0.000 description 15
- 230000005291 magnetic effect Effects 0.000 description 9
- 239000011435 rock Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
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- 230000001939 inductive effect Effects 0.000 description 1
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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
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/18—Condition of the laundry, e.g. nature or weight
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
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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 invention discloses a clothes treatment device and a control method thereof, wherein the clothes treatment device comprises a metal detection device, and the metal detection device comprises a first probe and a second probe which are sequentially arranged at a clothes feeding opening; the control method comprises the following steps: when the induction signal of the metal detection device is judged to meet the preset alarm condition, alarming and reminding are carried out; the preset alarm condition at least comprises that the time t1 when the first probe detects the fluctuation signal is earlier than the time t2 when the second probe detects the fluctuation signal. By adopting the control method, the electromagnetic interference of the metal inner cylinder, the metal shell and other metal electric devices of the clothes processing equipment on the metal detection device can be effectively shielded, the identification accuracy of the metal detection device is improved, the phenomenon of false triggering alarm is reduced, and the use experience of a user is improved.
Description
Technical Field
The invention belongs to the technical field of clothes treatment, and particularly relates to a clothes treatment device with a metal detection function and a control method thereof.
Background
With the increasing living standard of people, the washing machine has become one of the necessary household appliances in the home, 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 when doing laundry, and the clothes pocket often contains coins, keys, metal ornaments, cell-phones, earphones and other metal foreign matters.
Because in the washing process, the clothing is constantly stirred repeatedly, these metal foreign matters fall out from the pocket of clothing very probably, direct and washing machine's inner tube contact, can make washing machine's inner tube, the clothing receives wearing and tearing, and coin, key, the little foreign matters of metal ornaments isovolumn are blocked in the gap of inner tube easily, may cause the inner tube card to die, motor overload scheduling problem, cause serious damage or even damage to washing machine, and also can't continue to use after cell-phone, earphone etc. electronic product soaks, also can cause user's property loss.
Patent No. 201721626521.3 discloses a washing machine with metal detection function, a dehydration barrel is installed in the center of a machine body, and a detection coil is fixedly installed on the outer side of the dehydration barrel. When a metal object enters the detection coil, the signal values at the two ends of the coil change, and the changed signal is processed by the metal detector circuit board, so that the alarm gives out an alarm sound, and the indicator lamp lights to prompt the metal object.
Although the washing machine disclosed in the above application can detect whether metal exists in the clothes, the washing machine dewatering barrel, the shell, the electromagnetic valve, the display panel and other metal electric devices can generate interference on the detection coil due to the strong magnetic field environment of the washing machine. The user can make the dewatering barrel appear rocking throwing heavier clothing, perhaps user indoor construction etc. and shaking of dewatering barrel will cause the detecting coil of dewatering barrel outside installation to produce the magnetic field change, and the easy false triggering alarm is reported to the police for the rate of accuracy of detecting coil discernment reduces, influences user's use and experiences.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art, and provide a control method of clothes treatment equipment, which can effectively shield the interference of the change of the magnetic field inside the clothes treatment equipment, such as the shaking of an inner cylinder and the knocking of a shell, on metal detection and reduce the phenomenon of false triggering alarm.
In order to solve the technical problem, a first aspect of the present application discloses a control method for a clothes treatment apparatus, the clothes treatment apparatus includes a metal detection device, the metal detection device includes a first probe and a second probe sequentially disposed at a clothes feeding opening;
the control method comprises the following steps: when the induction signal of the metal detection device is judged to meet a preset alarm condition, alarming and reminding are carried out;
the preset alarm condition at least comprises that the time t1 when the first probe detects the fluctuation signal is earlier than the time t2 when the second probe detects the fluctuation signal.
Further, when the first probe and the second probe both detect the fluctuation signal,
if the time t1 is judged to be earlier than the time t2, the fact that metal foreign matters exist in the thrown clothes can be inferred, and the alarm device is controlled to give an alarm to remind a user; and if the time t1 is judged to be later than the time t2, no alarm is given.
Furthermore, the first probe and the second probe are arranged at the clothes throwing opening at intervals along the direction of the central axis of the inner drum;
in the process of putting clothes, if the time t1 is judged to be earlier than the time t2, further acquiring a time difference value delta t of the fluctuation signals detected by the first probe and the second probe, wherein delta t = t2-t1;
judging whether the delta t is within a set time range delta t', and if so, alarming and reminding; if not, no alarm reminding is carried out.
Further, the method for acquiring the set time range Δ t' includes:
according to a plurality of simulated putting experiments, the maximum time difference delta t of clothes passing through the first probe and the second probe when a user puts the clothes in from different height positions away from the clothes putting opening is obtained max And a minimum time difference Δ t min Wherein: Δ t max ≥Δt'≥Δt min 。
Further, the preset alarm condition further includes whether the initial vibration direction of the fluctuation signal detected by the first probe and the second probe is a preset direction;
preferably, when the time t1 is judged to be earlier than the time t2, and the initial vibration directions of the fluctuation signals detected by the first probe and the second probe are both first preset directions, alarming and reminding are carried out, otherwise, no alarming is carried out;
more preferably, the first predetermined direction is descending first.
Further, the method also comprises the following steps:
acquiring an induced voltage signal v1 output by a first probe and an induced voltage signal v2 output by a second probe in real time, and drawing vibration waveform curves of v1 and v2 respectively changing along with time;
taking the time when V1 reaches a set voltage threshold value V0 as t1, and taking the time when V2 reaches the set voltage threshold value V0 as t2;
and the control system of the clothes treatment equipment analyzes and deduces the reason of signal fluctuation generated by the metal detection device at least according to the sequence of the t1 and t2 time, and controls whether to give an alarm or not according to the analysis result.
Further, the method comprises the following steps that a control system of the clothes treatment equipment acquires sensing signals of the first probe and the second probe in real time;
and performing gain amplification processing on the acquired sensing signal, and judging whether a preset alarm condition is met according to the signal after gain amplification.
Further, the method also comprises the following steps:
respectively drawing a first vibration waveform curve and a second vibration waveform curve which change along with time based on the induced voltage signal output by the first probe and the induced voltage signal output by the second probe;
and extracting the data characteristics of the first vibration waveform curve and/or the second vibration waveform curve, and analyzing and judging the type of the metal foreign matter according to the data characteristics.
Further, acquiring time Ta when the second vibration waveform curve descends to the point a at the lowest point;
extracting a peak voltage Vb when the first vibration waveform curve descends to a b point at the lowest point before Ta time, and calculating a descending value delta V = V0-Vb of a voltage signal at the b point;
and comparing and analyzing the drop value delta V of the voltage signal with preset first judgment data, and judging the type of the metal foreign matter according to an analysis result.
Further, still include: setting the point at which the falling edge of the first vibration wave form curve reaches a set voltage threshold value V0 as a point c, and acquiring the slope K of the point bc bc ；
Respectively comparing the drop value Δ V of the voltage signal at the point b with the preset first determination data and the slope K bc And comparing and analyzing the data with preset second judgment data, and judging the type of the metal foreign matters according to the analysis result.
After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects.
1. According to the clothes treatment equipment provided by the invention, the first probe and the second probe are sequentially arranged at the clothes feeding opening, and the alarm is given when the time t1 that the first probe detects the fluctuation signal is judged to be earlier than the time t2 that the second probe detects the fluctuation signal, otherwise, the alarm is not given. By adopting the method, the electromagnetic interference of the metal inner cylinder, the metal shell and other metal electric devices of the clothes treatment equipment to the metal detection device can be effectively shielded, the identification accuracy of the metal detection device is improved, the phenomenon of false triggering alarm is reduced, and the use experience of a user is improved.
2. According to the simulated putting experiment, the maximum time difference delta t of clothes passing through the first probe and the second probe when the user puts the clothes at different height positions away from the clothes putting opening is obtained max And a minimum time difference Δ t min When the time difference value of the first probe and the second probe for detecting the fluctuation signal is judged to be delta t min ～Δt max And when the alarm is in the range, alarming and reminding, otherwise, not alarming. By adopting the method, the problem that the false alarm of the clothes processing equipment is caused by the metal detection device when a user stretches a hand into the clothes throwing port or takes clothes can be effectively avoided, the problem that the false alarm is caused by the metal detection device when the user puts the clothes in the clothes throwing port or the metal ornaments such as a finger ring, a bracelet and a watch on the hand pass through the metal detection device is solved, the detection accuracy of the metal detection device is improved, and the false alarm rate is reduced.
3. The invention can analyze and judge the type of the metal foreign matter according to the extracted data characteristics of the first vibration waveform curve of the first probe and the second vibration waveform curve of the second probe, and the control system of the clothes treatment equipment can accurately judge the type of the metal foreign matter and remind a user, thereby improving the intelligent degree of the clothes treatment equipment, having stronger man-machine interaction capability and improving the use experience of the user.
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 schematic view showing the construction of a laundry treating apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating a detection principle of a metal detection apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic view of the waveform curves of the first probe and the second probe when metal foreign matters are thrown into the clothes;
FIG. 4 is a schematic illustration of a fitted curve after gain in an embodiment of the present invention;
FIG. 5 is a schematic view of a waveform curve of the first probe and the second probe when the inner cylinder shakes in the embodiment of the present invention;
FIG. 6 is a schematic diagram of a variation curve of a metal throwing signal value and a slope value for simulating different types of metal objects;
FIG. 7 is a schematic flow chart of an embodiment of a control method of a clothes treating apparatus according to an embodiment of the present invention;
FIG. 8 is a schematic flow chart showing another embodiment of a control method of a clothes treating apparatus according to an embodiment of the present invention;
FIG. 9 is a flow chart illustrating a method for determining a type of a metal contaminant according to an embodiment of the present invention;
in the figure: 1. a first probe; 2. a second probe; 3. an inner barrel; 4. a tray seat; 5. a box body; 6. and a controller.
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", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific 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 and may be, for example, fixedly connected, detachably connected, or integrally connected; 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.
The present invention will be described in further detail with reference to examples.
Example one
As shown in fig. 1 to 2, the present embodiment discloses a laundry treating apparatus, including:
a control system;
the metal detection device is connected with the control system and is used for detecting whether metal foreign matters exist in the thrown clothes or not;
the metal detection device includes: the first probe 1 and the second probe 2 are sequentially arranged at the clothes throwing opening.
In the above scheme, the first probe 1 and the second probe 2 are annular probes arranged at the laundry feeding opening at intervals along the central axis direction of the inner drum.
This application is compared in setting up a probe through throwing in two ring probe that mouthful department set up at the clothing, can two ring probe of make full use of detect the sequence of fluctuation signal, deduce the reason that metal detection device produced the inductive signal, shield effectively and fall like the inner tube rock, strike the interference that the inside magnetic field of clothes treatment equipment such as shell changes metal detection, reduce the phenomenon of false triggering warning.
Further, the clothes treatment equipment also comprises a box body 5 and a tray seat 4 arranged at the top of the box body 5, wherein a clothes input opening for inputting or taking out clothes by a user is arranged in the tray seat 4.
The first probe 1 and the second probe 2 are vertically arranged in the tray seat 4 of the clothes treatment equipment at a set distance along the clothes input direction. The first probe 1 and the second probe 2 are both of annular structures.
The first probe 1 comprises a first detection coil, the second probe 2 comprises a second detection coil, and clothes are put in the first detection coil and the second detection coil in sequence.
In this embodiment, the first detection coil and the second detection coil are two same-specification annular coils with the same number of turns and the same shape and size, and identification accuracy is further ensured by adopting the two same-specification annular coils.
Further, the first detection coil and the first detection coil are arranged coaxially with the drum 3 of the laundry treating apparatus. The maximum outer diameters of the first detection coil and the first detection coil are equal to the inner diameter of the inner barrel 3.
No matter how rock about the inner tube 3 through above-mentioned setting, all be the state of going out the magnetic field, if the inner tube 3 rocks interference metal detection device, the second detection coil can produce and be earlier than first detection coil and produce induction signal, helps control system to shield the interference signal that inner tube 3 rocked and bring like this, reduces the phenomenon of false triggering warning, promotes user's use and experiences.
Further, the present embodiment provides a laundry treating apparatus further comprising a mounting structure for mounting the metal detection device, the mounting structure comprising:
the first mounting structure is arranged in the disc seat 4 and far away from the inner cylinder 3 and used for mounting and fixing the first probe 1;
and the second mounting structure is arranged in the disc seat 4 and close to the inner cylinder 3 side and is used for mounting and fixing the second probe 2, and the second mounting structure and the first mounting structure are arranged at a set interval distance.
In an embodiment of above scheme, first mounting structure is first annular mounting groove, second mounting structure is second annular mounting groove, 1 spacing the installing of first probe is in the first annular mounting groove, 2 spacing the installing of second probe are in the second annular mounting groove, through above-mentioned mounting means, can enough guarantee first probe 1 and 2 steadiness of second probe, can realize the rapid Assembly installation again.
Preferably, first probe 1 and second probe 2 pass through the spacing fixing of screw and/or buckle in first annular mounting groove and the second annular mounting groove, further guarantee first probe 1 and the steadiness of second probe 2, avoid making first probe 1 and second probe 2's position drunkenness because the vibration of clothing treatment facility, influence detection effect. Simultaneously, fix through screw and/or buckle first probe 1 and second probe 2, the installation of convenient to detach improves metal detection device's assembly efficiency.
Further, the laundry treating apparatus further includes: and the alarm device is connected with the control system of the clothes treatment equipment and used for sending out related alarm reminding according to the indication signal of the control system.
Further, the alarm device includes:
and the voice alarm unit is used for sending out related voice alarm reminding according to the indication signal of the control system.
And/or the display alarm unit is used for displaying related text and/or graphic reminders according to the indication signal of the control system.
In the above scheme, the voice alarm unit is a buzzer or a voice alarm, and the display alarm unit is a display panel of the clothes treatment device. Preferably, the alarm device further comprises a metal foreign matter indicator lamp. When the metal foreign matters are judged to be in the clothes, the clothes processing equipment can send alarm prompts to a user in various modes such as voice, characters and light, so that the user can timely obtain prompt messages of the metal foreign matters in the clothes.
In this embodiment, the control system of the laundry processing apparatus controls the alarm device only when it is determined that the first probe 1 and the second probe 2 both detect the metal signal and the time when the first probe 1 detects the metal signal is earlier than the time when the second probe 2 detects the metal signal, otherwise, the alarm device does not perform the alarm. By adopting the control method, the electromagnetic interference of the metal inner cylinder 3, the metal shell and other metal electric devices of the clothes treatment equipment to the metal detection device can be effectively shielded, the identification accuracy of the metal detection device is improved, the phenomenon of false triggering alarm is reduced, and the use experience of a user is improved.
Further, the control system comprises a controller 6, and the first probe 1 and the second probe 2 are respectively connected with the controller 6 through shielded wires. The first probe 1 and the second probe 2 are composed of a coil which is formed by winding an enameled wire with a fixed wire diameter with a fixed number of turns, an insulating rubber tube outer layer is coated outside the coil, and a butt joint of the coil is connected to an interface of the controller 6 through a lead-out shielding wire, so that detected metal signals are transmitted to the controller 6.
Further, the laundry treating apparatus further includes: and the standby power supply module is connected with the controller 6 and is used for independently supplying power to the controller 6. In this embodiment, the standby power supply module is a 12V rechargeable battery.
The metal detection device can be powered on when the clothes treatment equipment is not powered on or started up through the arranged standby power supply module, some users can find that the metal detection device is forgotten to be powered on when the clothes are put in, the standby power supply module can supply power to the controller 6, and even if the metal detection device is not powered on the clothes treatment equipment, the metal detection device can also detect whether metal foreign matters exist in the put-in clothes, so that missing detection is avoided, and the user use experience is improved.
Further, the control system includes:
the acquisition unit is used for acquiring the time when the first probe 1 detects the fluctuation signal and the time when the second probe 2 detects the fluctuation signal;
the judging unit is used for judging whether the time of the first probe 1 for detecting the fluctuation signal is earlier than the time of the second probe 2 for detecting the fluctuation signal;
and a control unit for controlling whether the alarm device of the clothes processing equipment gives an alarm or not according to the judgment result of the judgment unit.
In the above scheme, if the judging unit judges that the time that the first probe 1 detects the fluctuation signal is earlier than the time that the second probe 2 detects the fluctuation signal, the control unit controls the alarm device to alarm, otherwise, the alarm is not performed, the phenomenon of false triggering of the alarm is reduced, and the use experience of a user is improved.
The clothes treatment device in the embodiment may be a pulsator washing machine, a drum washing machine, a washing and drying all-in-one machine, and the like, and preferably, the clothes treatment device is a pulsator washing machine.
Example two
The present embodiment provides the control method for the clothing processing apparatus on the basis of the first embodiment, which can effectively shield the interference of shaking of the inner drum and knocking of the outer casing on the metal detection, and avoid the phenomenon of false triggering of the alarm
As shown in fig. 1 to 3 and 7, the control method of the laundry treating apparatus according to the present embodiment includes:
when the induction signal of the metal detection device is judged to meet a preset alarm condition, alarming and reminding are carried out;
the preset alarm condition at least comprises that the time t1 when the first probe 1 detects the fluctuation signal is earlier than the time t2 when the second probe 2 detects the fluctuation signal.
By adopting the method, the clothes processing equipment provided by the embodiment can give an alarm when the time t1 that the first probe 1 detects the fluctuation signal is judged to be earlier than the time t2 that the second probe 2 detects the fluctuation signal, otherwise, the alarm can not be given, the electromagnetic interference of a metal inner cylinder, a metal shell and other metal electric devices of the clothes processing equipment on the metal detection device can be effectively shielded, the identification accuracy of the metal detection device is improved, the phenomenon of false triggering alarm is reduced, and the use experience of a user is improved.
Further, as shown in fig. 1 to 3 and 7, if it is determined that the first probe 1 and the second probe 2 both detect the fluctuation signal and the time t1 when the first probe 1 detects the fluctuation signal is earlier than the time t2 when the second probe 2 detects the fluctuation signal, it can be concluded that there is a metal foreign object in the clothes being thrown, and an alarm is given to remind the user. If the time t1 that the first probe 1 detects the fluctuation signal is judged to be later than the time t2 that the second probe 2 detects the fluctuation signal, the reason that the metal detection device generates the induction signal is not caused by metal foreign bodies in the thrown clothes, and therefore no alarm is given, the false alarm rate is reduced, and the use experience of a user is improved.
This application compares in setting up single annular probe through first probe 1 and the second probe 2 that the interval set up from top to bottom, can two annular probes of make full use of detect the precedence of fluctuation signal, judge the reason that metal detection device produced sensing signal, shield effectively and fall like the inner tube rocks, strike the interference that the inside magnetic field of clothes treatment facilities such as shell changes metal detection, reduce the phenomenon of false triggering warning.
As shown in fig. 1 to 3, when laundry with metallic foreign matter is introduced into the laundry treating apparatus, the signals detected by the first probe 1 and the signals detected by the second probe 2 are distinguished by a sequence and a time difference, and the first probe 1 detects the fluctuation signal first, and then the second probe 2 detects it again.
Further, in another preferable embodiment, as shown in fig. 1 to 3 and 8, in the process of putting the laundry, if it is determined that the time t1 is earlier than the time t2, a time difference Δ t between the first probe 1 and the second probe 2 detecting the fluctuation signals is further obtained, where Δ t = t2-t1.
Further judging whether the delta t is within a set time range delta t', and if so, alarming and reminding; if not, no alarm reminding is carried out.
In the scheme, the alarm reminding is carried out in the set time range by judging the time difference value of the fluctuation signals detected by the first probe 1 and the second probe 2, otherwise, the alarm is not carried out, so that the phenomenon of false alarm of the clothes processing equipment caused by extreme conditions can be effectively eliminated, the identification accuracy of the metal detection device is further improved, and the probability of the false alarm is reduced.
Further, the method for acquiring the set time range Δ t' includes:
referring to fig. 2 and 3, according to the multiple simulated clothes feeding experiments, the maximum time difference of clothes passing through the first probe 1 and the second probe 2 when the user feeds clothes from different height positions away from the clothes feeding opening is obtainedΔt max And a minimum time difference Δ t min Wherein: Δ t max ≥Δt'≥Δt min 。
By adopting the method, the problem that the false alarm of the clothes processing equipment is caused by the metal detection device when a user stretches a hand into the clothes throwing port or takes clothes can be effectively avoided, the problem that the false alarm is caused by the metal detection device when the user puts the clothes in the clothes throwing port or the metal ornaments such as a finger ring, a bracelet and a watch on the hand pass through the metal detection device is solved, the detection accuracy of the metal detection device is improved, and the false alarm rate is reduced.
Specifically, the maximum time difference Δ t may be obtained by the following formula max And a minimum time difference Δ t min And then the set time range deltat' is obtained.
As shown in fig. 2 and 3, wherein h 1 And h 2 D is a definite value, h 2 For the distance between the laundry and the second probe 2, h 1 D is the distance between the first probe 1 and the second probe 2 for the distance between the laundry and the first probe 1.
Through a plurality of times of simulated throwing experiments, according to the formula, the maximum time difference delta t of the clothes passing through the first probe and the second probe when the user throws the clothes from different height positions away from the clothes throwing port is calculated max And a minimum time difference Δ t min And obtaining the set time range delta t'.
As shown in fig. 2, the first detection coil and the second detection coil are respectively connected to the controller 6, the controller 6 converts voltage signals detected by the first detection coil and the second detection coil into digital signals, in the actual working process of the clothes treatment equipment, a magnetic field generated when metal foreign matters enter the first detection coil and the second detection coil triggers the signal to drop, then the oscillation returns to the original value, a time difference value Δ t is obtained by subtracting time stamps of the trigger signals for analysis, if the time difference value exceeds the range of Δ t ', an alarm cannot be triggered, and the alarm cannot be triggered within the range of Δ t'.
Further, the preset alarm condition further includes whether the initial vibration direction of the fluctuation signal detected by the first probe 1 and the second probe 2 is a preset direction;
preferably, when the time t1 is judged to be earlier than the time t2, and the initial vibration directions of the first probe 1 and the second probe 2 for detecting the fluctuation signals are both the first preset direction, the alarm is given out, and otherwise, the alarm is not given out.
More preferably, the first predetermined direction is descending first.
First detection coil and second detection coil and clothing treatment facility's inner tube 3 all are the coaxial line in this embodiment, and the external diameter of first detection coil and second detection coil and the internal diameter of inner tube 3 equal setting. As shown in fig. 5, the shaking of the inner cylinder is a magnetic field, and is a signal changing upward when viewed from the signal. Furthermore, the second probe 2 generates a change in signal fluctuation first, followed by a change in the first probe 1. Through the characteristics, the interference caused by the shaking of the inner barrel can be shielded.
Specifically, the controller of the clothes processing equipment carries out digital signal processing analysis on fluctuation signals detected by the first probe 1 and the second probe 2, the signals are judged to rise firstly, and the time for the second probe 2 to detect the signal fluctuation is earlier than that of the first probe 1, so that the inner barrel can be judged to shake, the metal detection device caused generates induction signals, no alarm is given, and the inner barrel is shaken to shield the interference of metal detection.
This embodiment provides clothing processing apparatus, not only can rock the interference shielding that detects the metal to the inner tube, can also fall the box of knocking the interference shielding that the metal detected, hit the box like child naughty, also can cause the change of the inside magnetic field of clothing processing apparatus, because the time that second probe 2 detects the signal fluctuation when knocking the shell also is earlier than first probe 1, this application is through judging when first probe 1 detects the time t1 of fluctuation signal is earlier than second probe 2 and detects the time t2 of fluctuation signal, just can report to the police, effectively shield the interference of knocking the box.
The laundry treating apparatus control method provided by the present embodiment further includes the steps of:
acquiring an induced voltage signal v1 output by a first probe 1 and an induced voltage signal v2 output by a second probe 2 in real time, and drawing vibration waveform curves of v1 and v2 respectively changing along with time;
taking the time when V1 reaches a set voltage threshold value V0 as t1, and taking the time when V2 reaches a set voltage threshold value V0 as t2;
and the control system of the clothes treatment equipment analyzes and deduces the reason of signal fluctuation generated by the metal detection device at least according to the sequence of the t1 and t2 time, and controls whether to give an alarm or not according to the analysis result.
Specifically, when the signal fluctuation of the metal detection device caused by the metal foreign matter in the put clothes is judged, the alarm is given, and when the signal fluctuation of the metal detection device caused by the vibration of the inner drum or the knocking of the box body is judged, the alarm is not given.
Further, the method comprises the following steps that a control system of the clothes treatment equipment acquires induction signals of the first probe 1 and the second probe 2 in real time; and performing gain amplification processing on the acquired sensing signal, and judging whether a preset alarm condition is met according to the signal after gain amplification.
Specifically, as shown in fig. 4, the waveform after signal triggering is fitted to a curve by using a least square method, and the fitting polynomial formula is as follows:
period is as follows
As can be seen from the above, the time interval between the first detection coil and the second detection coil sensing the signals in 1/4 period is Δ T, and the period after the gain is T Gain of = T +4 × Δ T. Can derive a gain ratio of
The fitted curve after gain is therefore:
when a user puts small metal or non-ferromagnetic metal into clothes, such as coins and a signal generated by a plastic car key (containing a miniature circuit board) is very small, a signal digital gain effect needs to be realized through a double-layer coil, so that a metal signal can be effectively prevented from declining between a first detection coil and a second detection coil, and the identification rate is improved.
EXAMPLE III
The present embodiment provides a control method of a clothes treating apparatus based on the first embodiment and the second embodiment, and mainly aims to solve the problem that the existing clothes treating apparatus with a metal detection function cannot accurately determine the type of the metal foreign matters.
As shown in fig. 2, 3, 6 and 9, the present embodiment provides a method for controlling a laundry treatment apparatus, including:
respectively drawing a first vibration waveform curve and a second vibration waveform curve which change along with time based on the induced voltage signal output by the first probe 1 and the induced voltage signal output by the second probe 2;
and extracting the data characteristics of the first vibration waveform curve and/or the second vibration waveform curve, and analyzing and judging the type of the metal foreign matter according to the data characteristics.
According to the embodiment, the type of the metal foreign matters is analyzed and judged according to the extracted data characteristics of the first vibration waveform curve of the first probe 1 and the second vibration waveform curve of the second probe 2, the control system of the clothes treatment equipment can accurately judge the type of the metal foreign matters and remind a user, the intelligent degree of the clothes treatment equipment is improved, the man-machine interaction capacity is stronger, and the use experience of the user is improved.
Further, with reference to fig. 3 and 9, a time Ta when the second vibration waveform curve falls to the point a at the lowest point is obtained;
extracting a peak voltage Vb when the first vibration waveform curve descends to a b point at the lowest point before Ta time, and calculating a descending value delta V = V0-Vb of a voltage signal at the b point;
and comparing and analyzing the drop value delta V of the voltage signal with preset first judgment data, and judging the type of the metal foreign matter according to an analysis result.
As shown in fig. 3 and 6, the metal components and the total amount contained in different metal articles are different, and the induced voltage caused by the coil is different. And metal objects with larger metal content, such as mobile phones, car keys and key strings, can be distinguished according to the peak-to-valley voltage value of the metal signal b point. The calculation formula is as follows:
ΔV＝V 0 -Vb
where K =100 and V0 is the arithmetic mean of the first one hundred points, the two largest and two smallest values are preferably removed for deburring purposes. Δ V is the metal induced signal drop.
In one embodiment, the predetermined first decision data includes a first predetermined parameter threshold, as shown in table 1 below. And judging and comparing the drop value delta V of the voltage signal with a first preset parameter threshold value X1, and deducing the type of the metal object according to a judgment result.
| ΔV | Item determination | |
| ≤ | Article | 1 |
| ＞ | Article | 2 |
TABLE 1
In another embodiment, the preset first determination data includes a first set value range, and the type of the metal object is inferred by determining a range in which the drop value Δ V of the extracted voltage signal is located. The range of the first set value interval at least comprises two or more value intervals, and different value intervals correspond to different types of metal articles.
Because in the clothes throwing process, if metal foreign matters exist in the clothes, the metal foreign matters can cause voltage signal to drop to generate primary fluctuation when passing through the first probe 1, and if the thrown clothes are heavy, the metal foreign matters can impact the inner barrel to cause the inner barrel to shake, so that electromagnetic interference is generated on the metal detection device, and the voltage signal of the first probe 1 can also cause secondary fluctuation. Therefore, the method extracts the descending value of the voltage signal when the first vibration waveform curve descends to the lowest point before the Ta time, and judges the type of the metal foreign matter according to the descending value, so that the interference of shaking caused by the fact that the heavy clothes hit the bottom of the barrel to the metal detection device can be effectively eliminated, and the accuracy of judging the type of the metal foreign matter is improved.
Further, the control method provided by this embodiment further includes: setting the point where the falling edge of the first vibration wave form curve reaches the set voltage threshold value V0 as a point c, and acquiring the slope K of the point bc bc ；
Respectively comparing the falling value delta V of the voltage signal at the point b with preset first judgment data and slope K bc And comparing and analyzing the data with preset second judgment data, and judging the type of the metal foreign matter according to the analysis result.
Specifically, as shown in table 2 below, in one embodiment, the preset second determination data includes a second preset parameter threshold, and the magnitude and the slope K of the drop value Δ V of the voltage signal and the first preset parameter threshold X1 are determined and compared bc And the size of the second preset parameter threshold value Y1, and deducing the type of the metal object according to the judgment result.
TABLE 2
Or, in another embodiment, the preset first determination data includes a first set value interval range, and the preset second determination data includes a second set value interval range, by determining the first set value interval range, K, in which the drop value Δ V of the extracted voltage signal is located bc And the type of the metal object is deduced in the second set value interval range. The second range of the predetermined value interval at least includes two or more value intervals. Through the judgement mode that adopts interval scope, can distinguish the metallic foreign body of judging more quantity, the detection of metallic foreign body type is more comprehensive abundant, more can satisfy user's user demand.
Of course, in the present embodiment, it is not limited to passing only the fall value Δ V and the slope K of the voltage signal extracted before the Ta time bc The two data characteristics are used for judging the type of the metal foreign matter, and T can be used for example bc Data characteristic ratio Q = DeltaV/T bc And judging the type of the metal foreign matter according to the data characteristics.
Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the present invention.
Claims (10)
1. A control method of a laundry treating apparatus, characterized in that:
the clothes treatment equipment comprises a metal detection device, wherein the metal detection device comprises a first probe and a second probe which are sequentially arranged at a clothes feeding opening;
the control method comprises the following steps: when the induction signal of the metal detection device is judged to meet the preset alarm condition, alarming and reminding are carried out;
the preset alarm condition at least comprises that the time t1 when the first probe detects the fluctuation signal is earlier than the time t2 when the second probe detects the fluctuation signal.
2. The control method of a laundry treating apparatus according to claim 1, wherein when both the first probe and the second probe detect the fluctuation signal,
if the time t1 is judged to be earlier than the time t2, the fact that metal foreign matters exist in the thrown clothes can be inferred, and the alarm device is controlled to give an alarm to remind a user; and if the time t1 is judged to be later than the time t2, no alarm is given.
3. The control method of the clothes treatment equipment according to claim 1 or 2, characterized in that the first probe and the second probe are arranged at the clothes throwing port at intervals along the central axis direction of the inner drum;
in the process of putting clothes, if the time t1 is judged to be earlier than the time t2, further acquiring a time difference value delta t of the fluctuation signals detected by the first probe and the second probe, wherein delta t = t2-t1;
judging whether the delta t is within a set time range delta t', and if so, alarming and reminding; if not, no alarm reminding is carried out;
preferably, the method for acquiring the set time range Δ t' includes:
according to a plurality of simulated putting experiments, the maximum time difference delta t of clothes passing through the first probe and the second probe when a user puts the clothes in from different height positions away from the clothes putting opening is obtained max And a minimum time difference Δ t min Wherein: Δ t max ≥Δt'≥Δt min 。
4. The control method of a laundry treating apparatus according to any one of claims 1-3, wherein:
the preset alarm condition further comprises whether the initial vibration direction of the fluctuation signals detected by the first probe and the second probe is a preset direction;
preferably, when the time t1 is judged to be earlier than the time t2, and the initial vibration directions of the first probe and the second probe for detecting the fluctuation signals are both first preset directions, alarming is carried out, and otherwise, no alarming is carried out;
more preferably, the first predetermined direction is descending first.
5. The control method of a laundry treating apparatus according to any one of claims 1-4, further comprising the steps of:
acquiring an induced voltage signal v1 output by a first probe and an induced voltage signal v2 output by a second probe in real time, and drawing vibration waveform curves of v1 and v2 respectively changing along with time;
taking the time when V1 reaches a set voltage threshold value V0 as t1, and taking the time when V2 reaches the set voltage threshold value V0 as t2;
and the control system of the clothes treatment equipment analyzes and deduces the reason of signal fluctuation generated by the metal detection device at least according to the sequence of the t1 and t2 time, and controls whether to give an alarm or not according to the analysis result.
6. The control method of a laundry treating apparatus according to any one of claims 1-5, further comprising the steps of:
a control system of the clothes treatment equipment acquires sensing signals of a first probe and a second probe in real time;
and performing gain amplification processing on the acquired sensing signal, and judging whether a preset alarm condition is met according to the signal after gain amplification.
7. The control method of a laundry treating apparatus according to any one of claims 1-6, further comprising:
respectively drawing a first vibration waveform curve and a second vibration waveform curve which change along with time based on the induced voltage signal output by the first probe and the induced voltage signal output by the second probe;
and extracting the data characteristics of the first vibration waveform curve and/or the second vibration waveform curve, and analyzing and judging the type of the metal foreign matter according to the data characteristics.
8. The control method of a laundry treating apparatus according to claim 7, wherein:
acquiring the time Ta when the second vibration waveform curve descends to the point a at the lowest point;
extracting a peak voltage Vb when the first vibration waveform curve descends to a b point at the lowest point before Ta time, and calculating a descending value delta V = V0-Vb of a voltage signal at the b point;
and comparing and analyzing the drop value delta V of the voltage signal with preset first judgment data, and judging the type of the metal foreign matter according to an analysis result.
9. The control method of a laundry treating apparatus according to claim 8, further comprising:
setting the point where the falling edge of the first vibration wave form curve reaches the set voltage threshold value V0 as a point c, and acquiring the slope K of the point bc bc ；
Respectively comparing the drop value Δ V of the voltage signal at the point b with the preset first determination data and the slope K bc And comparing and analyzing the data with preset second judgment data, and judging the type of the metal foreign matter according to the analysis result.
10. A laundry treating apparatus, characterized by employing the control method of the laundry treating apparatus according to any one of claims 1 to 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111025399.5A CN115748190A (en) | 2021-09-02 | 2021-09-02 | Clothes treatment equipment and control method thereof |
| PCT/CN2022/115467 WO2023030241A1 (en) | 2021-09-02 | 2022-08-29 | Clothing treatment device and control method therefor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111025399.5A CN115748190A (en) | 2021-09-02 | 2021-09-02 | Clothes treatment equipment and control method thereof |
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| CN115748190A true CN115748190A (en) | 2023-03-07 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1314590A (en) * | 2001-04-30 | 2001-09-26 | 宝山钢铁股份有限公司 | Double detection coil metal probing method and device |
| JP2008161410A (en) * | 2006-12-28 | 2008-07-17 | Funai Electric Co Ltd | Washing machine |
| JP3177557U (en) * | 2012-05-28 | 2012-08-09 | トック・エンジニアリング株式会社 | Metal foreign object detection device |
| CN204491242U (en) * | 2014-12-18 | 2015-07-22 | 松下家电研究开发（杭州）有限公司 | A kind of device for processing washings with automatic detection foreign matter function |
| WO2018216702A1 (en) * | 2017-05-26 | 2018-11-29 | アンリツインフィビス株式会社 | Metal detecting device |
-
2021
- 2021-09-02 CN CN202111025399.5A patent/CN115748190A/en active Pending
-
2022
- 2022-08-29 WO PCT/CN2022/115467 patent/WO2023030241A1/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1314590A (en) * | 2001-04-30 | 2001-09-26 | 宝山钢铁股份有限公司 | Double detection coil metal probing method and device |
| JP2008161410A (en) * | 2006-12-28 | 2008-07-17 | Funai Electric Co Ltd | Washing machine |
| JP3177557U (en) * | 2012-05-28 | 2012-08-09 | トック・エンジニアリング株式会社 | Metal foreign object detection device |
| CN204491242U (en) * | 2014-12-18 | 2015-07-22 | 松下家电研究开发（杭州）有限公司 | A kind of device for processing washings with automatic detection foreign matter function |
| WO2018216702A1 (en) * | 2017-05-26 | 2018-11-29 | アンリツインフィビス株式会社 | Metal detecting device |
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| WO2023030241A1 (en) | 2023-03-09 |
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