WO2023088312A1 - Dispositif de traitement du linge et procédé de détection d'objet étranger métallique - Google Patents

Dispositif de traitement du linge et procédé de détection d'objet étranger métallique Download PDF

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Publication number
WO2023088312A1
WO2023088312A1 PCT/CN2022/132292 CN2022132292W WO2023088312A1 WO 2023088312 A1 WO2023088312 A1 WO 2023088312A1 CN 2022132292 W CN2022132292 W CN 2022132292W WO 2023088312 A1 WO2023088312 A1 WO 2023088312A1
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Prior art keywords
metal
clothes
detection module
alarm
signal
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PCT/CN2022/132292
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English (en)
Chinese (zh)
Inventor
李传东
许升
赵爱玲
王永君
尹俊明
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青岛海尔洗衣机有限公司
海尔智家股份有限公司
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Publication of WO2023088312A1 publication Critical patent/WO2023088312A1/fr

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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 
    • 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
    • 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

Definitions

  • the invention belongs to the technical field of clothing processing equipment, and in particular relates to a clothing processing equipment and a metal foreign object detection method.
  • washing machine has gradually become one of necessary household appliances in people's family, and most people regard washing machine as the main tool of washing clothes. Due to the fast pace of life, people often forget to check their pockets when doing laundry, and pockets often contain metal foreign objects such as coins, keys, metal ornaments, mobile phones, and earphones.
  • the Chinese patent with the application number 201720188233.8 discloses a clothes processing device and a metal detection device for the clothes processing device.
  • the metal detection device includes: a base; a detection circuit, the detection circuit is set on the base, and the detection circuit is preset with a reference voltage value Coil, the coil is arranged on the base and connected with the detection circuit, the coil generates a magnetic field when energized, the magnetic field covers at least a part of the base and has magnetic force lines extending generally along the thickness direction of the base; alarm device, alarm device and detection circuit connected, the detection circuit generates a driving voltage for driving the alarm device when the metal object cuts the magnetic force line, wherein the alarm degree of the alarm device varies with the difference between the voltage value of the driving voltage and the reference voltage value.
  • the clothes processing equipment disclosed in the above application can detect whether there is metal in the put clothes, if the user has metal accessories on his hand when picking up the clothes, such as bracelets, watches, bracelets, rings and other metal foreign objects, it is very easy to trigger
  • the false alarm of the alarm device reduces the accuracy of metal detection device identification, and the user experience is not good.
  • the technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and provide a method for detecting metal foreign objects in clothes processing equipment, which can accurately distinguish and judge whether the user is throwing clothes or taking clothes, and when it is judged that the user is performing the action of taking clothes , the control alarm device does not work, avoiding the troubles caused by false alarms to the user when taking clothes, and improving the user experience.
  • the first aspect of the present application discloses a method for detecting metal foreign objects in clothing processing equipment, the clothing processing equipment includes a metal detection module and an infrared sensing module arranged at the clothing input port;
  • the detection method includes: if it is judged that the interval between the trigger signal generated by the infrared sensing module and the shaking signal detected by the metal detection module exceeds the set interval, it can be deduced that the user performs the action of taking clothes, and the alarm device is controlled not to work.
  • the determination method of the shaking barrel signal includes:
  • the metal detection module If the metal detection module generates more than a set number of continuous waves within the set time, and the continuous waves tend to converge, it can be determined that a barrel shaking signal is generated.
  • the method for detecting metal foreign objects in clothes processing equipment specifically includes:
  • the metal detection module senses the shaking bucket signal within the set interval after the infrared sensing module generates the trigger signal, it can be deduced that the user is performing the action of throwing clothes, and the alarm device is controlled to maintain the working state;
  • the metal detection module senses the shaking bucket signal, it is inferred that the user is performing the action of taking clothes, and the control alarm device does not work;
  • the set interval time is 350ms-450ms; more preferably, the set interval time is 400ms.
  • the method for detecting metal foreign objects in clothes processing equipment further includes:
  • the metal detection module If the metal detection module generates the metal trigger signal at the same time or the infrared sensing module also generates the trigger signal within the set time difference range, an alarm is issued; otherwise, no alarm is issued.
  • the alarm device includes an NFC module and an NFC alarm tag, and the method also includes:
  • the NFC module When the alarm device is alarming, the NFC module writes the alarm information into the NFC alarm tag, and the smart terminal triggers the NFC alarm tag at close range to read the alarm information;
  • the alarm information includes alarm time and/or metal foreign object information.
  • the determination method for the metal detection module to generate a metal trigger signal includes:
  • the metal detection module If it is determined that the metal detection module generates a single signal wave, and the output voltage signal reaches the first set voltage threshold;
  • the method for detecting metal foreign objects in clothes processing equipment also includes the following steps:
  • the data feature of the signal wave is extracted, and the extracted data feature is compared and analyzed with the preset determination data to determine the type of the metal foreign object.
  • the method for determining whether the metal detection module generates a metal trigger signal includes the following steps:
  • the metal detection module If it is determined that the metal detection module generates a single signal wave, and the output voltage signal reaches the second set voltage threshold;
  • the second aspect of the present application further provides a laundry treatment device, which adopts any method for detecting metal foreign objects in the laundry treatment device described above.
  • the metal detection module includes a transmitting coil and a receiving coil arranged on opposite sides of the clothes insertion opening;
  • the transmitting coil and the receiving coil are located on the same horizontal plane and at the same height as the infrared sensing module.
  • the transmitting coil and the receiving coil are arc-shaped structures or strip-shaped structures arranged symmetrically along the radial direction of the clothes insertion opening;
  • the present invention has the following beneficial effects compared with the prior art.
  • the metal foreign body detection method provided by the present invention can accurately distinguish and judge whether the user is throwing clothes or picking them up, and the interval time between the trigger signal generated by the infrared sensing module and the shaking barrel signal sensed by the metal detection module exceeds the set time At intervals, it is inferred that the user is performing the action of taking clothes, and the control alarm device does not work, so as to avoid the troubles caused by false alarms when taking clothes, and improve the user experience.
  • the metal detection module when the metal detection module generates the metal trigger signal or the infrared sensing module also generates the trigger signal within the set time difference range, the alarm will be issued, otherwise no alarm will be issued, and the alarm can be accurately detected. It can accurately determine whether the metal detection module generates a metal trigger signal caused by metal foreign objects in the clothes, effectively shielding the interference of the internal magnetic field of the clothes processing equipment caused by external interference on the metal detection, and improving the recognition accuracy of the metal detection module Accuracy, reduce false trigger alarm phenomenon.
  • the metal detection module uses two arc-shaped or strip-shaped coils to detect metal foreign objects in the clothing. Compared with a traditional larger ring coil, the volume of the coil is larger. Small and convenient, with higher adaptability, easy installation, and lower cost.
  • Fig. 1 is a schematic flow chart of an implementation of the metal foreign matter detection method in Example 1 of the present invention
  • Fig. 2 is a schematic flow chart of an implementation of the metal foreign matter detection method in Example 2 of the present invention
  • Fig. 3 is a schematic flow chart of an implementation of the metal foreign matter detection method in Example 3 of the present invention.
  • Fig. 4 is a schematic flow chart of an implementation manner of detecting the type of metal foreign matter in Example 4 of the present invention.
  • Fig. 5 is a schematic diagram of a waveform curve in an embodiment of the present invention.
  • Fig. 6 is a schematic diagram of comparison of waveform curves of different types of metal foreign objects in the embodiment of the present invention.
  • Fig. 7 is a flow chart of the simulated delivery of Embodiment 6 in Embodiment 4 of the present invention.
  • Fig. 8 is a schematic diagram of the variation curves of the output voltage signal value and the instantaneous slope value of different types of metal foreign objects in the embodiment of the present invention.
  • Fig. 9 is a schematic diagram of the output voltage signal, infrared signal, and instantaneous slope value of the metal detection module changing with time when there are metal foreign objects in the clothes put in according to the embodiment of the present invention
  • Fig. 10 is a schematic diagram of comparison between the instantaneous slope value output by the metal detection module and the set slope threshold when there are metal foreign objects in the clothes put in according to the embodiment of the present invention
  • Fig. 11 is a schematic top view of the laundry processing equipment in Embodiment 5 of the present invention.
  • Fig. 12 is a schematic side view of the laundry treatment device in Embodiment 5 of the present invention.
  • Metal detection module In the figure: 1. Metal detection module; 11. Transmitting coil; 12. Receiving coil; 21. Infrared transmitting end; 22. Infrared receiving end;
  • the clothes processing device includes a metal detection module and an infrared sensing module arranged at a clothes insertion port, and the metal detection module includes an induction coil.
  • the detection method includes: if it is judged that the interval between the trigger signal generated by the infrared sensing module and the shaking signal detected by the metal detection module exceeds the set interval, it can be deduced that the user performs the action of taking clothes, and the alarm device is controlled not to work.
  • the above detection method includes the following steps:
  • S104 Infer that the user performs the action of taking clothes, and control the alarm device to not work;
  • S105 Infer that the user performs the action of throwing clothes, and control the alarm to maintain the working state.
  • the process of throwing clothes is as follows: while the signal of the infrared sensing module is triggered, the metal detection module does not detect the metal trigger signal, and the clothes fall freely from the clothes inlet to the bottom of the bucket, and will hit the bottom of the inner bucket, causing the inner bucket to Shaking, the induction coil of the metal detection module generates a fluctuating signal, and the metal detection module detects the shaking signal of the barrel caused by smashing the barrel.
  • the process of taking clothes is as follows: the user reaches into the bucket, the infrared signal of the infrared sensor module is blocked, at this time the metal detection module does not detect the metal trigger signal, the hand reaches into the bottom of the bucket, takes out the clothes, and the clothes leave the bucket.
  • the shaking signal of the bucket brought by the bottom is recognized by the metal detection module, and the metal detection module detects the shaking signal of the bucket brought by the clothes leaving the bottom of the bucket.
  • the module senses the length of the interval time of shaking the barrel signal to distinguish and judge whether the user is performing the action of taking clothes or throwing clothes, and when it is judged that the action of taking clothes is carried out, the alarm device is shielded.
  • the metal foreign body detection method provided in this embodiment can accurately distinguish and judge whether the user is throwing clothes or taking clothes, and the time interval between the trigger signal generated by the infrared sensing module and the shaking bucket signal sensed by the metal detection module exceeds the set interval Time, it is inferred that the user is performing the action of taking clothes, and the control alarm device does not work, so as to avoid the trouble caused to the user by false alarm when taking clothes, and improve the user experience.
  • the determination method of the shaking barrel signal includes:
  • the metal detection module If the metal detection module generates more than a set number of continuous waves within the set time, and the continuous waves tend to converge, it can be determined that a barrel shaking signal is generated.
  • the barrel shaking signal is generated by whether the slope value of the wave changes positively and negatively alternately within a specified time period and whether the signal value at the point where the slope alternates shows a decreasing trend.
  • the set quantity and the set time are determined according to the material, size, height of the clothes processing equipment and multiple simulated bucket shaking experiments.
  • the metal detection module generates 2 or more continuous waves, and the waves show a tendency to gradually converge , it can be judged that the barrel shaking signal is generated.
  • the method for detecting metal foreign objects in clothes processing equipment specifically includes:
  • the metal detection module senses the shaking bucket signal within the set interval after the infrared sensing module generates the trigger signal, it can be deduced that the user is performing the action of throwing clothes, and the alarm device is controlled to maintain the working state;
  • the metal detection module senses the shaking bucket signal, it is inferred that the user is performing the action of taking clothes, and the control alarm device does not work;
  • the set interval time is 350ms-450ms; more preferably, the set interval time is 400ms.
  • the set interval time is obtained by test personnel through a large number of experiments.
  • the alarm device does not work and shields the alarm, which can effectively solve the problem that the user has metal jewelry on his hand when taking clothes, such as bracelets, watches, bracelets, rings, etc., and the alarm device is triggered by mistake, which affects the user's experience.
  • This embodiment provides a method for detecting metal foreign objects in clothes processing equipment based on the first embodiment, and mainly introduces in detail how to detect metal foreign objects in the clothes put in.
  • the method for detecting metal foreign objects in clothes processing equipment described in this embodiment includes:
  • the metal detection module If the metal detection module generates the metal trigger signal at the same time or the infrared sensing module also generates the trigger signal within the set time difference range, an alarm is issued; otherwise, no alarm is issued.
  • the alarm will be issued when the metal detection module generates the metal trigger signal or the infrared sensing module also generates the trigger signal within the set time difference range; Find out whether the metal detection module generates a metal trigger signal caused by metal foreign objects in the clothes, effectively shielding the interference of the internal magnetic field of the clothes processing equipment caused by external interference on metal detection, and improving the accuracy of metal detection module identification , to reduce the phenomenon of false triggering of the alarm.
  • the time difference range is set to T0 seconds, then within T0 seconds before or after T0 seconds before the metal detection module generates the metal trigger signal, if it is determined that the infrared sensing module generates the trigger signal, it can be inferred that It is a metal trigger signal caused by metal foreign objects in the laundry, not the interference of the switch cover or nearby electronic metal equipment.
  • the T0 is obtained according to the simulated delivery experiment and the corresponding calculation formula.
  • the size of T0 mainly depends on the distance between the metal detection module and the infrared sensing module in the axial direction of the inner barrel, and the distance between the metal detection module and the infrared sensing module The bigger the T0 is, the smaller it is.
  • the metal detection module is arranged above the infrared sensing module, and within T0 seconds after the metal detection module generates the metal trigger signal, if it is determined that the infrared sensing module also generates the trigger signal, then It can be inferred that the metal detection module is triggered by metal foreign matter in the thrown clothes, and an alarm is given, otherwise no alarm is given.
  • the infrared sensing module is arranged above the metal detection module, and within T0 seconds after the infrared sensing module generates the trigger signal, if it is determined that the metal detection module also generates the metal trigger signal, it can be inferred that If the metal detection module is triggered by metal foreign objects in the clothes put in, an alarm will be issued, otherwise no alarm will be issued.
  • the infrared sensing module and the metal detection module are set at the same height, and when it is determined that the metal detection module generates a metal trigger signal, the infrared sensing module also generates a metal trigger signal. The alarm will be triggered only when the signal is triggered, which further improves the detection efficiency of metal foreign objects.
  • the metal detection module and the infrared sensing module are at the same height. Even if there is a certain height difference, the height difference is relatively small and can be ignored. Therefore, the design The fixed time difference range is close to 0.
  • the method for determining the metal trigger signal generated by the metal detection module specifically includes the following steps:
  • the induced voltage of the metal detection module will cause a large signal fluctuation, and a downward signal wave will be generated. If the output voltage of the metal detection module is judged to be When the value reaches or is lower than the first set voltage threshold, it can be judged that there is metal passing through.
  • the first set voltage threshold is the set dynamic average threshold V0
  • the calculation method is as follows:
  • the alarm device includes an NFC module and an NFC alarm tag, and the method further includes:
  • the NFC module When the alarm device is alarming, the NFC module writes the alarm information into the NFC alarm tag, and the smart terminal triggers the NFC alarm tag at close range to read the alarm information;
  • the alarm information includes alarm time and/or metal foreign object information, more preferably, the metal foreign object information includes the amount and/or type of metal foreign objects.
  • the NFC module can write the alarm information into the NFC alarm tag, record the alarm time and/or information such as the number and/or type of metal foreign objects, so that even if the user is temporarily absent If you don’t hear the alarm next to the clothing processing equipment, you can also use smart terminals such as NFC-enabled mobile phones to identify the NFC alarm tag, query the alarm time and/or the number and/or type of metal foreign objects, etc., and the user experience is better.
  • This embodiment provides a method for detecting metal foreign objects in clothes processing equipment.
  • the difference from the second embodiment above is that when judging whether a metal trigger signal is generated, the judgment of the instantaneous slope value of the output voltage signal and the set slope threshold is added. Steps to improve the recognition rate of small metal foreign objects.
  • the method for determining the metal trigger signal generated by the metal detection module in this embodiment includes the following steps:
  • S303 further obtain the instantaneous slope value of the output voltage signal of the metal detection module, and compare the instantaneous slope value with the set slope threshold;
  • the second set voltage threshold is smaller than the first set voltage threshold, and by the additional step of judging the instantaneous slope value and the set slope threshold, compared with the second embodiment, the first set Reduce the voltage threshold on the basis of a constant voltage threshold, because if the voltage threshold is set too large, the output voltage signal of the metal detection module will be relatively low when some small metal foreign objects pass through, and may not reach the set voltage threshold , there will be a phenomenon of missed detection.
  • the step of obtaining the instantaneous slope value of the output voltage signal in real time is started again, and when the output voltage signal of the metal detection module generates When there is a slight fluctuation, it will not judge the instantaneous slope value of the output voltage signal and the size of the set slope threshold, which reduces the waste of fearless resources and makes the entire judgment process more simplified and rationalized.
  • the acquisition of the instantaneous slope value of the output voltage signal output by the metal detection module specifically includes the following steps:
  • S401 Collect the output voltage signals V1, V2, ..., Vn of the metal detection module
  • the instantaneous slope value is obtained by calculating and analyzing the output voltage signals Vn -2 and Vn of the first two points.
  • it is not limited to taking the output voltage signals of the first two points, and can also be obtained by taking the first three points, the first four points Points of the output voltage signal to calculate the instantaneous slope value.
  • the derivative of the output voltage signal at each point of the detection waveform curve is obtained, and when it is judged that the derivative is greater than the set threshold, that is It can be judged that the metal detection module generates a trigger signal, and it can be judged whether the infrared sensing module is in a trigger state at this time.
  • the instantaneous slope value P directly takes ⁇ V, that is, the difference between Vn-2 - Vn , that is, it is also possible to judge whether the metal detection module generates a trigger signal through the instantaneous drop value of the voltage signal, The same effect as the instantaneous slope value can be achieved, and the judgment steps can also be simplified.
  • the sampling frequency of the output voltage signal is one point every 10-20ms, that is, 20ms ⁇ T1 ⁇ 10ms.
  • This application uses the time overlap width method.
  • the instantaneous slope value is calculated.
  • the instantaneous slope value of the output voltage signal reaches the set slope threshold, the infrared Whether there is a high level in the sensing module, and if so, an alarm will be issued.
  • This embodiment provides a method for detecting metal foreign objects in clothes processing equipment based on the second embodiment.
  • the difference from the above second embodiment is that this embodiment can determine the type of metal foreign objects according to the data characteristics of the extracted signal wave.
  • Extract the data features of the signal wave compare and analyze the extracted data features with the preset judgment data, and judge the type of metal foreign objects.
  • the method for detecting metal foreign objects in laundry processing equipment described in this embodiment specifically includes the following steps:
  • S501 Draw a waveform curve based on the output voltage signal of the metal detection module collected
  • S503 Extracting the data features of the signal wave, and comparing and analyzing the extracted data features with the preset determination data, to determine the type of metal foreign matter;
  • the type of the metal foreign objects is further judged, by extracting and detecting the data features of the waveform curve, and comparing and analyzing the extracted data features with the preset judgment data, Determine the types of metal foreign objects, remind users of the types of metal foreign objects, improve the intelligence of clothing processing equipment, strengthen human-computer interaction capabilities, and improve user experience.
  • the extraction of the data features of the signal wave includes the following steps:
  • the feature parameter ratio can also be the ratio of the slope K ab to the time difference T bc .
  • the metal foreign object detection method in this embodiment includes a one-dimensional judgment mode, the extracted data features include a first data feature, and the preset judgment data includes a first preset parameter threshold.
  • the one-dimensional judging mode includes: judging and comparing the first data feature with a first preset parameter threshold, and inferring the type of the metal foreign object according to the judging result.
  • the first data feature takes the voltage difference V pp .
  • the metal composition and total amount contained in different metal foreign objects are different, and the induced voltage caused by the coil is different. According to the voltage difference V pp value, the metal foreign objects with large metal content can be distinguished.
  • the detection waveform curve of the mobile phone, bluetooth headset and car key it is obvious that the V pp of the mobile phone is the largest, and the V pp of the car key is the smallest.
  • the size of V pp is judged by the one-dimensional judgment mode , you can detect the specific metal foreign body. For example, when the clothes processing equipment leaves the factory, the tester detects that the V pp of the mobile phone is greater than 50mV and the V pp of the car key is less than 30mV, the threshold value of the first preset parameter is X1, and X1 is 40mV.
  • the size of the voltage difference V pp and the first preset parameter threshold X1 is judged, and when it is judged that the voltage difference V pp is less than or equal to 40mV, it is inferred that the metal in the clothes is The foreign object is the car key and reminds the user. When it is judged that the voltage difference V pp is greater than 40mV, it is inferred that the metal foreign object in the laundry is a mobile phone, and the user is reminded.
  • the first preset parameter threshold X1 and the one-dimensional judgment mode are stored in the storage unit of the laundry treatment equipment when the laundry treatment equipment leaves the factory.
  • the size of the first preset parameter threshold X1 will be optimized accordingly.
  • the laundry processing equipment is provided with a simulated feeding program, and the user can actively optimize the first preset parameter threshold through the simulated feeding program.
  • the first data feature can also take the characteristic parameter ratio Q, and the first preset parameter threshold is N1.
  • the extracted characteristic parameter ratio Q is less than or equal to N1 , it is inferred that the type of metal foreign matter in the clothing is item 1, and if it is judged that Q is greater than N1, it is inferred that the type of metal foreign matter in the clothing is item 2.
  • the method for detecting metal foreign objects in laundry processing equipment includes a two-dimensional judgment mode, the extracted data features further include a second data feature, and the preset judgment data further includes a second preset parameter threshold.
  • the two-dimensional judging mode includes: judging and comparing the first data feature and the first preset parameter threshold, and the second data feature and the second preset parameter threshold respectively, and inferring the type of the metal foreign object according to the judgment result .
  • the V pp of Bluetooth keys and car keys are relatively close, and the type of metal foreign objects can be further distinguished and judged by comparing the second data features.
  • the first data feature may be V pp , the first preset parameter threshold value is X1; the second data feature is K ab , and the second preset parameter threshold value is Y1.
  • V pp ⁇ X1, K ab ⁇ Y1 it can be inferred that the metal foreign body is item 1; when it is judged that V pp ⁇ X1, K ab > Y1, then It can be inferred that the metal foreign body is item 3; when it is judged that V pp > X1, K ab ⁇ Y1, it can be inferred that the metal foreign body is item 2; when it is judged that V pp > X1, K ab > Y1, then Item 4 can be inferred to be a metal foreign object.
  • the method for detecting metal foreign objects in laundry processing equipment provided in this embodiment further includes a three-dimensional judging mode, the extracted data features further include a third data feature, and the preset judging data further includes a third preset parameter threshold.
  • the three-dimensional judgment mode includes: respectively judging and comparing the first data feature and the first preset parameter threshold, and the second data feature and the second preset parameter threshold, and The size of the third data feature and the threshold value of the third preset parameter, and deduce the type of the metal foreign object according to the judgment result.
  • the first data feature can be V pp , the first preset parameter threshold is X1; the second data feature is K ab , the second preset parameter threshold is Y1; the third data feature is K bc , The third preset parameter threshold is Z1.
  • the metal foreign object detection method in this embodiment further includes a four-dimensional judging mode, the extracted data features further include a fourth data feature, and the preset judging data further includes a fourth preset parameter threshold.
  • the four-dimensional judgment mode includes: respectively judging and comparing the first data feature with the first preset parameter threshold, the second data feature with the second preset parameter threshold, and the third data feature with the third preset parameter threshold, And the size of the fourth data characteristic and the threshold value of the fourth preset parameter, and deduce the type of the metal foreign object according to the judgment result.
  • the first data feature can be V pp , the first preset parameter threshold is X1; the second data feature is K ab , the second preset parameter threshold is Y1; the third data feature is K bc , The third preset parameter threshold is Z1; the fourth data characteristic is T bc , and the fourth preset parameter threshold is M1.
  • the metal foreign body detection method provided in this embodiment can accurately determine the type of metal foreign body.
  • the judgment method is simple and efficient. Up to 16 kinds of metal foreign bodies can be effectively detected through the four-dimensional judgment mode, and the detection of metal foreign body types is more comprehensive. Rich, able to meet the needs of most users.
  • the clothes processing device can default to any judgment mode in Embodiments 1 to 4.
  • the default judgment mode of the clothes processing device can be set as the four-dimensional judgment mode. .
  • the user can switch and select the judgment mode according to actual needs through the control panel or control terminal of the clothes processing device, for example, the one-dimensional judgment mode is used to distinguish and judge the earphone and the car key , the user thinks that he may actually put the earphone and car key into the clothing processing equipment, then the clothing processing equipment can be switched to the one-dimensional judgment mode, which can not only meet the individual needs of the user, but also effectively improve the metal The efficiency of judging the type of foreign matter.
  • the display unit of the clothes processing device will display the types of metal foreign objects that can be detected corresponding to each judgment mode, for Users choose to provide certain conveniences.
  • the method for detecting metal foreign objects in laundry processing equipment provided in this embodiment is different from the above-mentioned embodiments 1 to 4 in that the preset judgment data includes a plurality of numerical ranges, and metal foreign objects can be inferred by judging the intervals where the extracted data features are located. kind of.
  • the clothes processing device includes a one-dimensional judging mode, in which the type of the metal foreign object can be determined according to the first set value interval where the extracted first data feature is located.
  • the first set numerical interval includes at least two numerical intervals, and different numerical intervals correspond to different types of metal foreign objects.
  • the clothes processing equipment includes a two-dimensional judgment mode.
  • the two-dimensional judgment mode according to the first set value range where the extracted first data feature is located and the second set value range where the second data feature is located, Interval to determine the type of metal foreign body.
  • the second set value range includes at least two or more value ranges.
  • the clothes processing device also includes a three-dimensional judgment mode, a four-dimensional judgment mode, a five-dimensional judgment mode... .
  • the types of metal foreign objects are judged by the range of numerical values, and more types of metal foreign objects can be judged.
  • the delivery of the simulated preset types of metal foreign objects specifically includes:
  • the cloud extracts the data characteristics of the simulated waveform curve for each release, calculates the average value, and uses it as the preset judgment data for this type of metal foreign matter, and sends it to the control module of the clothes processing equipment.
  • control module compares and analyzes the detected and extracted data features with the preset judgment data to determine the type of metal foreign matter.
  • the user can simulate the delivery of his own car key, and can set the simulation delivery 5-10 times, extract the voltage difference V pp ' of the simulated waveform curve for each delivery, and calculate the average voltage difference of these 5-10 times
  • the value V pp '' is used as the preset judgment data.
  • the delivery There are car keys in the clothing to remind the user.
  • the laundry processing device is provided with a voice recognition module, and the voice recognition module can receive the type of metal foreign objects input by the user's voice.
  • the user can perform simulation delivery according to the metal foreign objects that may be placed in the clothes at home, and extract the relevant simulation data characteristics of the specific type of metal foreign objects during the simulation delivery process.
  • the detection of the type of metal foreign matter is more targeted and more accurate , to meet the individual needs of users.
  • the added simulated delivery program can also optimize the parameter threshold of the judgment data preset by the clothes treatment device, and realize more accurate judgment of the type of metal foreign objects that the user actually puts into the clothes treatment device.
  • this embodiment provides a laundry processing device, which adopts the method for detecting metal foreign objects in the laundry processing device described in any one of the first to fourth embodiments above.
  • the laundry processing equipment includes a box body 4 and a disk base 3 arranged on the box body 4, the disk base 3 is provided with a clothes insertion port 301, and the metal detection module 1 includes The transmitting coil 11 and the receiving coil 12 are arranged on opposite sides of the clothes insertion opening 301 .
  • the transmitting coil 11 and receiving coil 12 are connected to the controller of the clothes processing equipment through wires, and the controller controls the excitation current to inject alternating periodic signals into the transmitting coil 11 through a single-chip microcomputer, and the signal is transmitted to the receiving coil 12 in the form of electromagnetic waves to generate an induced current , the signal controller collects the change of the induced electromotive force of the receiving coil 12 to judge whether there is a metal foreign object passing through in the electromagnetic field.
  • the infrared sensing module includes an infrared transmitting terminal 21 and an infrared receiving terminal 22 which are relatively arranged on opposite sides of the clothing insertion port 301, and the infrared transmitting terminal 21 also outputs high-frequency If the voltage signal is blocked by clothing, the infrared receiving end 22 cannot receive the high-frequency signal, and the point changes from high level to low level, then it can be judged that there is an object passing through the clothing delivery port 301 .
  • the transmitting coil 11 and the receiving coil 12 are located on the same horizontal plane, and the two coils are installed in the tray seat 3 of the clothes processing device, separated from the left and right ends of the clothes insertion port 301 or the front and rear ends.
  • the two ends are aligned with each other in the horizontal plane at the same height to ensure the maximum variation of the received electromagnetic field.
  • the size of the coil area is set according to the recognition accuracy, detection frequency and power. From the perspective of material saving and module adaptability, the coil should be as small as possible.
  • the transmitting coil 11, the receiving coil 12 and the infrared sensing module can be on the same horizontal plane, or can be at a certain height, which needs to be adjusted by an algorithm.
  • the transmitting coil 11 and the receiving coil 12 are connected to the infrared sensing module. Modules are at the same height.
  • the clothes processing equipment further includes an alarm device connected to the controller, and the alarm device includes a voice alarm module and a display.
  • the alarm device includes a voice alarm module and a display. A voice alarm reminds, and the display shows a fault code.
  • the alarm device in this embodiment also includes an NFC module and an NFC alarm tag, and the NFC module writes the alarm information into the NFC alarm tag, records the alarm time and the metal foreign object information, so that even if the user is temporarily not next to the clothing processing equipment If the alarm is not heard, the alarm information can also be queried by identifying the NFC alarm tag.
  • the transmitting coil 11 and the receiving coil 12 are arc-shaped structures or strip-shaped structures arranged symmetrically along the radial direction of the clothes insertion opening 301 .
  • the metal detection module 1 uses two arc-shaped or strip-shaped coils to detect metal foreign objects in the clothing. Compared with a traditional larger ring coil, the volume of the coil is larger. Small and convenient, with higher adaptability, easy installation, and lower cost.
  • the transmitting coil 11 and the receiving coil 12 can be arranged in an arc-shaped structure that matches the shape of the clothes insertion opening 301 , with a higher degree of adaptation.
  • the transmitting coil 11 and the receiving coil 12 can also be arranged in a straight strip structure, which is simple in shape and easy to manufacture.
  • the transmitting coil 11 and the receiving coil 12 can also be arranged in an arc-shaped structure protruding outward, so that the magnetic field diverges outward and the detection range is larger.
  • the line connecting the center of the transmitting coil 11 and the center of the receiving coil 12 passes through the center of the clothes delivery opening 301, so as to prevent the sending coil 11 and the receiving coil 12 from being arranged at the end side of the clothing delivery opening 301, and the position is biased. , the detection range is small, and the phenomenon of missing detection occurs.
  • the laundry processing equipment described in the embodiments of the present invention includes, but is not limited to, a washing machine, a clothes dryer, a clothes protecting machine, a washing and drying machine, and an integrated washing and caring machine.
  • the laundry treatment equipment described in the embodiments of the present invention is a top-wheel washing machine.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

Un dispositif de traitement du linge et un procédé de détection d'objet étranger métallique. Le dispositif de traitement du linge comprend un module de détection de métal (1) et un module de détection infrarouge disposé au niveau d'une ouverture de distribution du linge (301). Selon le procédé de détection d'objet étranger métallique, s'il est déterminé qu'un intervalle de temps entre un signal de déclenchement généré par le module de détection infrarouge et un signal de tremblement de cuve détecté par le module de détection de métal (1) dépasse un intervalle de temps défini, il peut être déduit qu'un utilisateur exécute une action de déchargement du linge, et un appareil d'alarme est commandé afin de ne pas s'activer. Le dispositif de traitement du linge et le procédé de détection d'objet étranger métallique permettent différencier et de déterminer précisément l'introduction et le déchargement du linge par l'utilisateur ; lorsqu'il est déterminé que l'intervalle de temps entre le signal de déclenchement généré par le module de détection infrarouge et le signal de tremblement de cuve détecté par le module de détection de métal dépasse l'intervalle de temps défini, il est déduit que l'utilisateur exécute l'action de déchargement du linge, et l'appareil d'alarme est commandé afin de ne pas s'activer, ce qui permet d'éviter à l'utilisateur la gêne occasionnée par une fausse alarme pendant le déchargement du linge, et d'améliorer l'expérience de l'utilisateur.
PCT/CN2022/132292 2021-11-19 2022-11-16 Dispositif de traitement du linge et procédé de détection d'objet étranger métallique WO2023088312A1 (fr)

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CN202111375525.X 2021-11-19

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008161410A (ja) * 2006-12-28 2008-07-17 Funai Electric Co Ltd 洗濯機
KR20120111633A (ko) * 2011-04-01 2012-10-10 이상종 금속탐지 장치를 장착한 세탁기
CN104775268A (zh) * 2014-01-10 2015-07-15 Lg电子株式会社 家电产品及家电产品控制方法
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CN106886051A (zh) * 2017-02-28 2017-06-23 无锡小天鹅股份有限公司 衣物处理设备及其金属探测装置
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