CN110804836A - Hyperspectral imaging device for detecting clothes in washing machine and washing machine - Google Patents
Hyperspectral imaging device for detecting clothes in washing machine and washing machine Download PDFInfo
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- CN110804836A CN110804836A CN201810791439.9A CN201810791439A CN110804836A CN 110804836 A CN110804836 A CN 110804836A CN 201810791439 A CN201810791439 A CN 201810791439A CN 110804836 A CN110804836 A CN 110804836A
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Abstract
The invention provides a hyperspectral imaging device for detecting clothes in a washing machine and the washing machine. Wherein hyperspectral imager device includes: the spectral imaging camera is used for shooting hyperspectral images of clothes and washing water placed in an inner barrel of the washing machine; and the transparent cover is arranged outside the shooting direction of the spectral imaging camera so as to isolate the spectral imaging camera from the space of the inner barrel of the washing machine. The hyperspectral imaging device can synthesize image data and spectral data in a hyperspectral image, can accurately determine the material and the washing concentration of the washed clothes, and provides a detection means for automatic washing of a washing machine.
Description
Technical Field
The invention relates to a washing machine, in particular to a hyperspectral imaging device for detecting clothes in the washing machine and the washing machine.
Background
With the improvement of living standard and the drive of consumer upgrading, the consumer's orientation of household appliances is changing, and the initial functional requirements are changing to the pursuit of quality of life. The washing machine gradually changes from the initial pure washing to a home washing center, which also provides a new challenge for the intelligent washing machine, and of course, provides a chance for the application of various intelligent identification technologies on washing machine products. By using an intelligent identification technology, intelligent washing and protection of clothes on a washing machine is realized, and the development trend of intelligent washing machines is also reached.
However, because of the different materials of various clothes, even each piece of clothes is made of different materials, such as pure cotton, linen, silk, chemical fiber, wool, down feather, leather, blended yarn, terylene, etc. The information of washing time, washing intensity, detergent dosage, rinsing frequency and the like required by each material are different, but the existing washing machine can only select one washing program, and the requirement of each material for washing is not fully considered. In this case, the washing effect is not good, or excessive washing causes waste of water, electricity and detergent, or the washing is not clean.
Due to the fact that the types of the materials of the clothes are complex, the prior art lacks of means for identifying the materials of the clothes, a user needs to manually select a washing mode when washing, user experience is influenced, and the phenomenon that the clothes are worn or not washed cleanly due to misoperation is easy to occur.
Disclosure of Invention
An object of the present invention is to provide a hyperspectral imaging apparatus for detecting laundry in a washing machine.
A further object of the present invention is to improve the accuracy of the material of the garment.
Another further object of the present invention is to simplify the operation of the washing machine and to improve the user experience.
In particular, the present invention provides a hyperspectral imaging device for detecting laundry in a washing machine, comprising: the spectral imaging camera is used for shooting hyperspectral images of clothes and washing water placed in an inner barrel of the washing machine;
and the transparent cover is arranged outside the shooting direction of the spectral imaging camera so as to isolate the spectral imaging camera from the space of the inner barrel of the washing machine.
Optionally, the outer side of the transparent cover is coated with a super-hydrophobic nano coating to avoid water stains affecting the shooting effect of the hyperspectral imaging device on the surface of the transparent cover.
Optionally, the superhydrophobic nanocoating is made of acrylic polyurethane.
Optionally, the hyperspectral imaging apparatus comprises: and the wide-spectrum light source is arranged corresponding to the spectrum imaging camera and is used for providing shooting light for the spectrum imaging camera.
Optionally, the broad spectrum light source comprises: and the integrated LED is set to have a light emission spectrum range of 400-2400 nm. The integrated LED is arranged around the spectral imaging camera and is shielded by the transparent cover.
Optionally, the hyperspectral imaging apparatus further comprises: the image analysis device is configured to determine the material of the clothes according to the hyperspectral image of the clothes shot by the spectral imaging camera so that the washing machine can determine a washing scheme which accords with the clothes; and determining the content of the detergent in the washing water according to the hyperspectral image of the washing water shot by the spectral imaging camera so that the washing machine can determine to finish rinsing.
Optionally, the image analysis device is further configured to extract image feature information and feature spectrum information from the hyperspectral data captured by the spectral imaging camera, and perform feature recognition by using the image feature information and the feature spectrum information to determine the material of the clothes or the content of the detergent in the washing water.
In particular, the present invention also provides a washing machine, comprising: an outer tub for holding washing water; an inner tub rotatably provided in the outer tub to accommodate laundry, the inner tub having an opening at a front portion thereof into which the laundry is put; any one of the above hyperspectral imaging apparatuses.
Optionally, the hyperspectral imaging apparatus comprises: the door body is used for closing the opening; and the hyperspectral imaging device is arranged at the position of the outer barrel close to the door body.
According to the hyperspectral imaging device, the hyperspectral images of the clothes and the washing water placed in the inner barrel of the washing machine are shot by the spectral imaging camera, the material of the washed clothes can be accurately determined due to the comprehensive image data and the spectral data in the hyperspectral images, the determined washing scheme is adaptive to the washed clothes, the washing scheme is more targeted, the washing efficiency is improved, and the damage caused by washing abrasion of the clothes is effectively reduced on the premise of ensuring the washing cleanness. The hyperspectral image can also be combined with a chemometrics algorithm to determine the washing concentration in the washing water, and can be used for judging the rinsing result.
Furthermore, the hyperspectral imaging device is provided with the transparent cover coated with the super-hydrophobic nano coating, so that the hyperspectral imaging device is protected; and provides the broad spectrum light required for photographing using a broad spectrum light source.
Furthermore, the washing machine disclosed by the invention can be used for configuring a washing scheme according to the hyperspectral image by utilizing the image analysis device, comprehensively utilizing the image characteristic information and the characteristic spectrum information, and treating clothes to be washed with different materials, so that the use experience of the washing machine is improved.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
FIG. 1 is a schematic block diagram of a hyperspectral imaging apparatus according to one embodiment of the invention;
FIG. 2 is a schematic structural diagram of a hyperspectral imaging apparatus according to an embodiment of the invention;
fig. 3 is a schematic external view of a washing machine according to an embodiment of the present invention;
fig. 4 is a schematic view of an internal structure of a washing machine according to an embodiment of the present invention; and
fig. 5 is a schematic block diagram of control of a washing machine according to one embodiment of the present invention.
Detailed Description
Fig. 1 is a schematic block diagram of a hyperspectral imaging apparatus 200 according to an embodiment of the invention, and fig. 2 is a schematic structural diagram of the hyperspectral imaging apparatus 200 according to an embodiment of the invention. The hyperspectral imaging apparatus 200 of the present embodiment may generally include: a spectral imaging camera 230, a transparent cover 210, a broad spectrum light source 220, an image analysis device 300.
The spectral imaging camera 230 is used for shooting hyperspectral images of the clothes and the washing water placed in the inner tub of the washing machine. The hyperspectral image captured by the spectral imaging camera 230 may include image data and spectral data, for example, each pixel point may include an image pixel element and a spectral wavelength element of the pixel, that is, each pixel point is a multivariate data set including a plurality of image pixel element data and a set of spectral wavelength elements. Therefore, the hyperspectral data simultaneously obtain the continuous spectrum data of each pixel point and the continuous image data of each spectrum wave band. The hyperspectral image is an optical image with continuous wavelength, the spectral range can be set to be 200nm to 2500nm, the hyperspectral image has higher spectral resolution, and the resolution can reach 2-3 nm. In the present embodiment, in order to meet the identification requirement of the material of the clothing, the spectral range of the hyperspectral image may be set to 1200 to 2400 nm.
And a transparent cover 210 disposed outside a photographing direction of the spectral imaging camera 230 to space-isolate the spectral imaging camera 230 from the inner tub of the washing machine, thereby protecting the spectral imaging camera 230. One side of the transparent cover 210 facing the inner barrel is coated with a super-hydrophobic nano coating to avoid water stains affecting the shooting effect of the hyperspectral imaging device 200. The super-hydrophobic nano coating can be prepared mainly based on acrylic polyurethane, has good wear resistance and excellent mechanical property, and has good tolerance to strong acid and strong alkaline media; in the experimental stage, the contact angle of the super-hydrophobic nano coating is still larger than 150 degrees after the super-hydrophobic nano coating is polished for 300 times by using sand paper, and the hydrophobic effect is good.
By using the super-hydrophobic nano coating, the transparent cover 210 does not form water stain accumulation, and the requirement of the spectral imaging camera 230 for shooting in the washing machine is met.
Since the light inside the washing machine 10 cannot satisfy the photographing requirement, the washing machine 10 further includes: and a broad spectrum light source 220, also disposed at the upper portion of the opening, for providing photographing light to the hyperspectral imaging apparatus 200.
Fig. 4 is a schematic diagram of the mid-high spectrum imaging device 200 and the wide spectrum light source 220 of the automatic washing machine 10 according to one embodiment of the present invention. The broad spectrum light source 220 may include: and the integrated LED is set to have a light emission spectrum range of 400-2400 nm. In this embodiment, one or more integrated LEDs (4 are shown, but in practical applications, a specific number may be set according to light requirements) may be provided, for example, the integrated LEDs may be disposed around the hyperspectral imaging apparatus 200 and shielded by the transparent cover 210.
In other embodiments, the broad spectrum light source 220 may be disposed separately from the hyperspectral imaging apparatus 200, for example, on two sides of the upper portion of the door of the washing machine.
The image analysis device 300 may be configured to determine the material of the laundry according to the hyperspectral image of the laundry captured by the spectral imaging camera 230, so that the washing machine may determine a washing scheme corresponding to the laundry; and determining the content of the detergent in the washing water according to the hyperspectral image of the washing water shot by the spectral imaging camera 230 so that the washing machine can determine to finish rinsing.
The image analysis device 300 may be further configured to extract image feature information and feature spectrum information from the hyperspectral data captured by the spectral imaging camera 230, and perform feature recognition using the image feature information and the feature spectrum information to determine the material of the laundry or the detergent content in the washing water.
In particular, the present invention also provides a washing machine, which can perform the clothes material identification and the detergent concentration detection using the hyperspectral imaging apparatus 200 according to any of the above embodiments, and the following describes the installation structure and the operation process of the hyperspectral imaging apparatus 200 in the washing machine. Fig. 3 is an external view of the washing machine 10 according to one embodiment of the present invention, fig. 4 is an internal structure view of the washing machine 10 according to one embodiment of the present invention, and fig. 5 is a control schematic block diagram of the washing machine 10 according to one embodiment of the present invention.
The washing machine 10 of the present embodiment may generally include: an outer tub 110, an inner tub 120, a hyperspectral imaging apparatus 200, an image analysis apparatus 300, and a wash execution system 400. The washing machine 10 of the present embodiment is described by taking a front-loading drum washing machine as an example, and since washing machines of other configurations generally only have differences in the structures of the inner tub 120, the outer tub 110, the supporting manner, etc., but the operation principle is substantially the same as that of other structures, and persons skilled in the art can apply the solution of the present embodiment to washing machines of other configurations based on understanding the solution of the present embodiment applied to the front-loading drum washing machine.
An outer tub 110 of the washing machine 10 for holding washing water; the inner tub 120 is rotatably provided in the outer tub 110 for accommodating laundry to be washed. The front of the inner tub 120 may have an opening for laundry to be put in. The inner tub 120 has a plurality of lifting ribs therein, and is driven by the motor 430 and the transmission mechanism to rotate regularly, so that the laundry is rolled and kneaded in the inner tub 120, thereby achieving the purpose of washing. The washing machine 10 can be controlled to perform washing operations such as water feeding, detergent feeding, washing, warming, rinsing, draining, and dewatering. Since the specific washing structure is well known to those skilled in the art, it will not be described herein.
The materials of the laundry are more and more abundant, and the laundry of each material has different washing requirements (for example, different requirements on washing time, washing strength, detergent addition amount, rinsing times and dewatering strength) due to the characteristics of the material. The conventional washing control manner selected by the user from the preset washing modes has failed to satisfy the user's demand. The washing machine 10 of the embodiment utilizes the spectral imaging camera 230 of the hyperspectral imaging device 200 to shoot the clothes placement area of the inner tub 120, the image analysis device 300 analyzes and obtains a washing scheme according to the hyperspectral image obtained by shooting, accurately determines the material of the washed clothes, and the determined washing scheme is adaptive to the washed clothes, so that the pertinence of the washing scheme is stronger, the washing efficiency is improved, and the damage caused by the washing abrasion of the clothes is effectively reduced on the premise of ensuring the washing cleanness.
The hyperspectral imaging apparatus 200 may be disposed at an upper portion of the opening (i.e., an upper portion of the inner side of the door body 130), have a photographing direction configured to face the laundry placement area of the inner tub 120 (i.e., a middle-lower area of the inner tub 120), and be configured to photograph a hyperspectral image of the laundry to be washed.
One optional arrangement is: the hyperspectral imaging device 200 is installed at a position where the outer barrel 110 is close to the door 130, and a transparent cover 210 is further arranged at the installation position to spatially isolate the spectral imaging camera 230 from the inner barrel 120. The broad spectrum light source 220 may also be disposed at an upper portion of the opening for providing photographing light.
The image analysis apparatus 300 may configure a washing protocol according to the hyperspectral image. The washing pattern may include the type of detergent put in by the detergent putting device 410, a putting amount, a putting time, a water discharge amount, a water discharge time, and a rotation speed of the driving motor 430 at each stage of the washing process, that is, the washing pattern may specify washing parameters such as a washing time, a washing intensity, a detergent addition amount, a detergent type, and a rinsing frequency.
The analysis process of the image analysis apparatus 300 may be: extracting image characteristic information and characteristic spectrum information from hyperspectral data shot by the hyperspectral imaging device 200; identifying the material characteristics of the clothes according to the image characteristic information and the characteristic spectrum information to determine the material of the clothes to be washed; and determining a corresponding washing scheme according to the material of the clothes to be washed. The absorption peak positions and the intensities of different molecular groups in the clothes material are different, and the material identification is carried out by analyzing the molecular vibration reflected light information and combining a chemometrics algorithm, so that the clothes material information and the content information of different materials can be obtained.
For example, the characteristic spectrum information of the hyperspectral data may include a characteristic peak of the spectral data, and a preset material identification model may be used to identify the characteristic peak of the spectral data to obtain a material type corresponding to the characteristic peak of the spectral data, wherein the material identification model is obtained in advance according to various clothing materials and the characteristic peak of the corresponding spectral data by training (a training sample may be formed by combining various materials such as wool, cotton, blended fabrics, silk, polyester, chinlon, hemp fabrics, and the like, and the spectral data thereof with a chemometric algorithm). For example: the spectral characteristic peak of the pure cotton material is 1950 nm; the spectral characteristic peak of the chemical fiber fabric is 1400 nm.
Since the number of the clothes to be washed may be multiple and the materials of the clothes may be multiple, the image analysis device 300 may further determine the material type and the number of the clothes to be washed by using a neural network algorithm to discriminate the image characteristics in the hyperspectral data of the clothes to be washed; thereby respectively extracting the characteristic information of the hyperspectral images of the clothes to be washed made of various materials.
In the case that the laundry contains a plurality of materials, the image analysis apparatus 300 may determine the washing solutions corresponding to the plurality of materials, and select an alternative washing solution from the washing solutions corresponding to the plurality of materials. The alternative washing scheme is selected as the scheme with the least damage to various clothes to be washed or the scheme with the shortest washing time.
In order to solve the problem that a plurality of pieces of clothes are put in simultaneously, so that part of the clothes are blocked, the inner barrel 120 is driven to rotate by a preset angle after the clothes are put in, the hyperspectral imaging device 200 shoots hyperspectral images for a plurality of times to obtain a plurality of groups of hyperspectral images, and the clothes material identification is respectively carried out, so that all clothes material identification results are obtained.
Because some clothes made of materials cannot be shuffled, for example, the cleaning requirements of real silk materials and some chemical fiber materials are different, and meanwhile, the cleaning of all the clothes cannot be met, and the clothes can be damaged. Therefore, when the image analysis device 300 determines that the materials of the clothes to be washed are not suitable for simultaneous cleaning or the preparation scheme cannot be determined, prompt information can be output to prompt the user to intervene.
The washing machine 10 of the present embodiment may further be provided with a display screen 500, and the display screen 500 may be configured to output an interface corresponding to a washing scheme, for example, output the above prompt information, which may include information about the material of the clothes that cannot be washed at the same time, an operation prompt for reminding a user to take out the clothes, and the like.
The washing performing system 400 may include a detergent dispenser 410 for dispensing detergent into the outer tub 110 during a washing process, a water inlet 420 for discharging water into the outer tub 110 during the washing process, a driving motor 430 for driving the inner tub 120 to rotate, a drain 440, and the like. The washing execution system 400 may execute the image analysis apparatus 300 to determine the washing pattern and automatically complete the washing process.
After the washing scheme is determined, the detergent putting device 410 is controlled to put the detergent according to the initial putting amount; starting the hyperspectral imaging device 200 to shoot the washing mixed liquid, and determining the concentration of the detergent in the washing mixed liquid according to the hyperspectral image characteristic information of the washing mixed liquid; and controlling the detergent feeding device to increase the feeding amount of the detergent under the condition that the concentration of the detergent in the washing mixed liquid is lower than the washing target concentration.
The step of determining the detergent concentration of the washing mixed liquid by the image analysis device 300 according to the hyperspectral image characteristic information of the washing mixed liquid comprises the following steps: selecting a plurality of pixel points in different areas of a hyperspectral image of the washing mixed liquid, and respectively acquiring spectral data of the pixel points; extracting a spectrum curve of the spectrum data of the plurality of pixel points; respectively identifying the spectral curves of the spectral data of the multiple pixel points by using a preset detergent concentration detection model to obtain the corresponding detergent concentrations of the multiple pixel points, wherein the detergent concentration detection model is obtained by training the spectral curves of washing mixed liquor with different detergent concentrations in advance; and comprehensively judging the detergent concentrations corresponding to the multiple pixel points by using a chemometrics algorithm to obtain the detergent concentration of the washing mixed liquid.
After the washing machine finishes rinsing, the hyperspectral imaging device 200 can also shoot the rinsing waste liquid and acquire a hyperspectral image of the rinsing waste liquid shot by the hyperspectral imaging device 200; the image analysis device 300 determines the concentration of the detergent in the rinsing waste liquid according to the hyperspectral image characteristic information of the rinsing waste liquid; and controlling the washing machine to perform rinsing again under the condition that the concentration of the detergent in the rinsing waste liquid is higher than the rinsing target concentration.
The specific method for analyzing the detergent concentration in the rinsing waste liquid by the image analysis device 300 is substantially the same as the method for determining the detergent concentration in the washing mixed liquid, and is not repeated here.
The hyperspectral imaging device 200 can enable the washing condition to better meet the requirement of the material of the clothes through the content (concentration) of the detergent, and can determine whether the washing is clean or not through the concentration of the detergent of the washing waste liquid, so that the washing effect is further improved.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (10)
1. A hyperspectral imaging apparatus for detecting clothing in a washing machine, comprising:
the spectral imaging camera is used for shooting hyperspectral images of clothes and washing water placed in an inner barrel of the washing machine;
and the transparent cover is arranged outside the shooting direction of the spectral imaging camera so as to isolate the spectral imaging camera from the space of the inner barrel of the washing machine.
2. The hyperspectral imaging apparatus according to claim 1 wherein
The transparent cover outside one side scribbles super hydrophobic nanometer coating to avoid the influence appears on the transparent cover surface the water stain of high spectrum imaging device shooting effect.
3. The hyperspectral imaging apparatus according to claim 2 wherein
The super-hydrophobic nano coating is made of acrylic polyurethane.
4. The hyperspectral imaging apparatus according to claim 1 further comprising:
and the wide-spectrum light source is arranged corresponding to the spectrum imaging camera and is used for providing shooting light for the spectrum imaging camera.
5. The hyperspectral imaging apparatus according to claim 4 wherein
The broad spectrum light source includes: an integrated LED whose emission spectrum range is set to be 400 to 2400 nm.
6. The hyperspectral imaging apparatus according to claim 5 wherein
The integrated LED is arranged around the spectral imaging camera and is shielded by the transparent cover.
7. The hyperspectral imaging apparatus according to any of claims 1 to 6 further comprising:
the image analysis device is configured to determine the material of the clothes according to the hyperspectral image of the clothes shot by the spectral imaging camera so that the washing machine can determine a washing scheme conforming to the clothes; and determining the content of the detergent in the washing water according to the hyperspectral image of the washing water shot by the spectral imaging camera so that the washing machine can determine to finish rinsing.
8. The hyperspectral imaging apparatus according to claim 7 wherein
The image analysis device is further configured to extract image characteristic information and characteristic spectrum information from hyperspectral data shot by the spectral imaging camera, perform characteristic identification by using the image characteristic information and the characteristic spectrum information, and determine the material of the clothes or the content of a detergent in the washing water.
9. A washing machine comprising:
an outer tub for holding washing water;
an inner tub rotatably provided in the outer tub to accommodate laundry, the inner tub having an opening at a front thereof into which the laundry is put; and
the hyperspectral imaging apparatus according to any of claims 1 to 8.
10. The washing machine as claimed in claim 9, further comprising:
the door body is used for closing the opening; and is
The hyperspectral imaging device is arranged at the position, close to the door body, of the outer barrel.
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| CN201810791439.9A CN110804836A (en) | 2018-07-18 | 2018-07-18 | Hyperspectral imaging device for detecting clothes in washing machine and washing machine |
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| CN113489869A (en) * | 2021-07-05 | 2021-10-08 | 深圳市威视佰科科技有限公司 | Clothing material identification method based on hyperspectral camera |
| CN113489870A (en) * | 2021-07-05 | 2021-10-08 | 深圳市威视佰科科技有限公司 | Clothes recognition device and system |
| TWI795000B (en) * | 2021-09-29 | 2023-03-01 | 新加坡商兆晶生物科技股份有限公司（新加坡） | Optical analyzer and its optical analysis system |
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