EP3932282A1 - Lave-vaisselle pourvu de dispositif de capture d'image - Google Patents

Lave-vaisselle pourvu de dispositif de capture d'image Download PDF

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Publication number
EP3932282A1
EP3932282A1 EP21181161.7A EP21181161A EP3932282A1 EP 3932282 A1 EP3932282 A1 EP 3932282A1 EP 21181161 A EP21181161 A EP 21181161A EP 3932282 A1 EP3932282 A1 EP 3932282A1
Authority
EP
European Patent Office
Prior art keywords
image
sensor
area
interior
interior area
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP21181161.7A
Other languages
German (de)
English (en)
Other versions
EP3932282C0 (fr
EP3932282B1 (fr
Inventor
Seyfettin Kara
Eckard Riedenklau
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Miele und Cie KG
Original Assignee
Miele und Cie KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Miele und Cie KG filed Critical Miele und Cie KG
Publication of EP3932282A1 publication Critical patent/EP3932282A1/fr
Application granted granted Critical
Publication of EP3932282C0 publication Critical patent/EP3932282C0/fr
Publication of EP3932282B1 publication Critical patent/EP3932282B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4251—Details of the casing
    • A47L15/4257—Details of the loading door
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4295—Arrangements for detecting or measuring the condition of the crockery or tableware, e.g. nature or quantity
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4293—Arrangements for programme selection, e.g. control panels; Indication of the selected programme, programme progress or other parameters of the programme, e.g. by using display panels
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/30—Variation of electrical, magnetical or optical quantities
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/26—Indication or alarm to the controlling device or to the user

Definitions

  • the invention relates to a flushing device with an image acquisition device
  • the interior of a dishwasher can be monitored by means of a camera and the corresponding image evaluation in order to optically monitor and evaluate the load level, load types, degree and types of soiling, etc. in order to improve the washing performance.
  • the object of the invention is to create an improved flushing device with an improved image capturing device.
  • the advantages that can be achieved with the invention include, in addition to an enlarged viewing angle of a static camera, a saving in costs and material, as well as increased stability of both the image capturing device and the sub-area of the flushing device in which the image capturing device is installed.
  • the image acquisition device of the dishwasher presented here manages without additional movable mechanical elements, but nevertheless enables the acquisition of the views of the upper and lower basket including the items to be washed. It is therefore not necessary for the camera to be mechanically displaceable in various ways in order to achieve large-area visual coverage and to enlarge a restricted viewing angle of the camera. This reduces the costs and the structural complexity of the camera system.
  • the use of injection-molded lenses enables individual elements of the optics to be combined, which results in a further reduction in costs.
  • a dishwasher is presented with an image acquisition device for acquiring the interior of the sink, the interior of the sink being lockable with a door.
  • the image acquisition device has an image sensor with a first sensor area for providing first sensor signals and a second sensor area for providing second sensor signals.
  • the image capturing device comprises an optical device for guiding first light incident from a first interior area onto the first sensor area and second light incident from a second interior area onto the second sensor area.
  • the first interior area and the second interior area are spaced apart from one another.
  • the image acquisition device an image processing device which is designed to provide a first image, using the first sensor signals, which depicts the first interior area, and, using the second sensor signals, a second image which depicts the second interior area.
  • the dishwasher can be, for example, a dishwasher with various load carriers for items to be washed, for example an upper basket, a lower basket and a cutlery drawer.
  • a camera for example, can be built into the washing device as part of the image acquisition device.
  • the image sensor can be a sensor typically used in digital cameras with an array of pixels for capturing light.
  • the optical device can optically divide the area captured by the image capture device, which can also be referred to as the field of view of the camera, into two interior areas, the first interior area being sensed by the first sensor area of the image sensor and the second interior area being sensed by the second sensor area.
  • the image processing device is designed to provide corresponding images of the interior of the sink.
  • Such an image acquisition device can advantageously be used to implement multi-perspective optics for a static camera.
  • a movable camera can be dispensed with, the mechanics of which would under certain circumstances be subject to high mechanical loads, for example if the door is inadvertently slammed shut by users of the device.
  • a not inconsiderable structural effort would have to be made in the case of a movable camera so that the mechanics would not be damaged.
  • Such an outlay is advantageously not necessary in the case of the image acquisition device presented here.
  • the first sensor area and the second sensor area can directly adjoin one another.
  • half of the pixels of the image sensor can sense the incident first light from the first interior area of the sink interior and provide a corresponding first sensor signal, while the other half of the pixels can sense the incident second light and provide a corresponding second sensor signal.
  • both the first sensor area and the second sensor area can be arranged together on an image sensor, whereby material and costs can be saved.
  • the image capturing device can have a housing in which the image sensor and the optical device can be arranged in a rigidly attached manner.
  • a housing can be shaped in order to protect the image sensor and the optical device from moisture and additionally or alternatively from vibrations.
  • the image sensor and the optical device can be arranged rigidly and immovably in the housing, which advantageously enables the use of an inexpensive camera and the work involved in installing the image acquisition device can be kept as low as possible.
  • the housing can be arranged rigidly on the door.
  • the housing, and with it the image sensor and the optical device can be installed in the door between an outer door panel and an inner door panel with a view of a rear panel or a rear wall of the interior.
  • the inner door panel can have an opening, for example, which enables the interior of the sink to be captured by the image capturing device.
  • the dishwasher can comprise an upper basket and a lower basket, wherein when the dishwasher is ready for operation, the upper basket can be arranged in the first interior area and the lower basket can be arranged in the second interior area.
  • the field of view of the image acquisition device can be divided horizontally into two halves when the flushing device is ready for operation.
  • the halves can optimally represent the upper basket and the lower basket, and thus also the respective items to be washed, as well as a central spray arm.
  • items to be washed such as dishes, for example, can advantageously be distributed evenly in the washing machine and yet reliably detected by the image recording device.
  • the optical device can comprise a first mirror element for deflecting the first light and a second mirror element for deflecting the second light.
  • two mirrors that are installed directly in the detection area, or field of view, of the image detection device can split the detection area horizontally in two halves onto two further mirrors, which can be arranged at a somewhat steeper angle.
  • both the first interior area and the second interior area can advantageously be completely covered.
  • the optical device can comprise at least one prism for deflecting the first light and the second light.
  • the prism can, for example, divide the camera's field of view horizontally into two halves by directing the light incident from the wash cabinet accordingly.
  • the halves can optimally represent an upper basket and a lower basket and thus also the respective items to be washed, as well as the middle spray arm.
  • the number of components used can be reduced by using a prism, thus saving work.
  • the image processing device can be designed to rotate the first image and the second image before providing them. Since, unlike attachments for 3D photos on smartphones, the motifs, for example the upper and lower basket, are on top of each other, the image sensor can be arranged in portrait format in order to achieve the best possible coverage of both superimposed motifs on the sensor. In this way, an image can be created on the sensor that, in the case of two motifs, can be divided in the middle and can show one motif on one side and the second motif on the other.
  • the raw camera image in the 3: 4 page format i.e. a portrait orientation, can show an image of the upper basket in the upper half and an image of the lower basket in the lower half.
  • the partial images can be upside down.
  • the image can therefore be divided into its two views in the middle and these can be rotated by 180 ° in order to align the images correctly.
  • the overall image can also be aligned first and then divided horizontally into its two views.
  • An image that is visible to a user can advantageously correspond in its orientation to the real orientation of the flushing device.
  • the flushing device can have an evaluation device for evaluating the first image and the second image provided by the image processing device , the amount of soiling or the type of soiling of the items to be washed on the respective load carriers.
  • the evaluation can be carried out separately for individual load carriers, such as the upper basket and lower basket.
  • the control device of the washing device can be set up to select a washing program and / or to change or adapt it while the washing program is running, depending on the results of the evaluation device.
  • the flushing device can have a display device for displaying the first image and the second image provided by the image processing device.
  • the display unit can be, for example, a display that can be arranged on an outer surface of the dishwasher and on which the images of the interior of the sink captured by the image capture device can be displayed.
  • the image acquisition device can have a transmission device for sending the first image and the second image to a mobile device.
  • the transmitting device can, for example, send the images captured by the image capturing device to a mobile device, such as a smartphone or a tablet, by means of a wireless connection.
  • a user can advantageously view and monitor the flushing process and related information at any time and from any location.
  • the device described here can be used accordingly in connection with a commercial or professional appliance.
  • FIG. 1 shows a schematic representation of a section of a flushing device with an embodiment of an image capturing device 100 with a mirrored optical device 105.
  • the image capturing device 100 is partially enclosed by a housing 107, the image capturing device 100 being rigid and immovable in the housing 107 and the housing 107 being rigid is arranged in a door 110 of a dishwasher.
  • This arrangement reduces a negative effect of a user opening or slamming the door 110 on the mechanics of the image capturing device 100 to a minimum.
  • the image capturing device 100 is arranged between an outer door panel 112 and an inner door panel 114, only by way of example, so that the image capturing device 100 captures the interior of the sink 115 of the dishwasher.
  • part of the door inner panel 114 is shaped as a permeable pane, through which light from the sink interior 115 can fall onto the image capturing device 100.
  • the interior of the sink 115 of the dishwasher has a first interior area 117 and a second interior area 120, the first interior area 117 and the second interior area 120 being spaced from one another.
  • the optical device 105 is designed to detect first light 119 originating from the first interior area 117 and second light 122 originating from the second interior area 120.
  • the first light 119 falls on a first mirror element 125 of the optical device 105 and is deflected by the first mirror element 125 onto an optional further first mirror element 127.
  • the first mirror element 125 and the further first mirror element 127 are arranged in such a way that the first light 119 is guided in the direction of an image sensor 130 and hits a first sensor area 132 here.
  • the second light 122 is directed to a second sensor area 134 of the image sensor 130, in that the second light 122 is deflected by a second mirror element 135 and a further second mirror element 137.
  • the first sensor area 132 and the second sensor area 134 directly adjoin one another.
  • a row of the image sensor 130 is assigned to the first sensor area 132 and a line directly adjacent to it of the image sensor 130 is assigned to the second sensor area 134.
  • the assignment of the pixels of the image sensor 130 to the first sensor area 132 and the second sensor area 134 is, according to an exemplary embodiment, dependent on the optical device 105 and is previously known.
  • the image sensor 130 is designed to provide first sensor signals 140 corresponding to the incident first light 119 on the first sensor area 122 and second sensor signals 142 to an image processing device 145 corresponding to the incident second light 122 on the second sensor area 134.
  • the image processing device 145 is designed to use the first sensor signals 140 to provide a corresponding image that depicts the first interior area and to use the second sensor signals 142 to provide a corresponding image that depicts the second interior area 120.
  • FIG 2 shows a schematic representation of an embodiment of a flushing device 200 with an image acquisition device 100 with a mirrored optical device 105. This can be the one in Figure 1 act described image capturing device and the optical device described.
  • the detection device 100 is arranged in a door 110, the door 110 closing a sink interior 115 of the dishwasher 200.
  • an upper basket 205 and a spray arm 210 are arranged in the first interior area 117 of the sink interior 115.
  • a lower basket 215 is arranged in the second interior area 120 in this exemplary embodiment.
  • items 220 are arranged in both the upper basket 205 and in the lower basket 215, which can be cups and plates, for example.
  • the image capturing device 100 is designed to capture the first interior area 117 and the second interior area 120 and to provide corresponding image information for a display device 225 of the flushing device 200.
  • the display device 225 is designed as a display in the door 110 of the dishwasher 200.
  • a display device arranged externally to the flushing device 200 can also be used.
  • the image acquisition device 100 which can also be referred to as a camera and optics, is installed in the door 110 between the door outer panel 112 and the door inner panel 114 with a view of a rear wall 230, which can also be referred to as the rear panel, of the sink interior 115.
  • two mirrors or mirror elements 127, 137 which are installed directly in the field of view of the camera, divide the field of view of the camera horizontally in two halves onto two further mirror elements 125, 135. These are arranged at a somewhat steeper angle merely by way of example and capture the beam paths of the first light 119 and of the second light 122 that emanate from the first interior area 117 and the second interior area 120 go out. This results in an optimal view of the baskets, which are arranged in the first interior area 117 and the second interior area 120, and the respective items to be washed 220, as well as the central spray arm 210 below the upper basket 205, for both halves of the image.
  • Figure 3 shows a schematic representation of an embodiment of an image capture device 100 with a prism 300. This can be the image capture device described in the previous figures, the prism 300 being used instead of or as a supplement to the mirrors mentioned.
  • the image capturing device 100 is installed in the door 110 between the door outer panel 112 and the door inner panel 114, looking towards the rear wall 230 of the sink interior 115.
  • the optical device 105 comprises the prism 300 for splitting the beam path to the image sensor 130 instead of the mirror elements described in the previous figures.
  • the prism 300 divides the field of view of the image capturing device 100 horizontally into two halves merely as an example.
  • the first interior area 117 and the second interior area 120 are captured by the image capturing device 100.
  • the upper basket 205 which is only arranged in the first interior area 117 as an example, and the lower basket 215, which is only arranged as an example in the second interior area 120, as well as the items to be washed 220 in the racks and the spray arm 210 are also recorded and optionally displayed as images on the display device 225.
  • the image acquisition device 100 in this exemplary embodiment comprises a transmission device 305 for sending images of the sink interior 115 to a mobile device 310, which is a smartphone only by way of example.
  • FIG 4 shows a schematic representation of an exemplary embodiment of a raw camera image 400.
  • the basic structure of the resulting image on the image sensor described above which can also be referred to as a camera sensor, is shown in portrait orientation. Only in the following steps, which are subsequently in the following Figures 5 and 6 are described, the camera raw image 400 shown here is processed further.
  • the raw camera image 400 shown in this figure consists of an upper partial image 405 and a lower partial image 410, both of which are directly adjacent to one another.
  • the motifs shown in the upper partial image 405 and in the lower partial image 410 which are only exemplarily designed as upper basket 205 and lower basket 215, are superimposed. Therefore, the image sensor described in the previous figures is arranged in portrait format in order to achieve the best possible coverage of the two superimposed motifs on the sensor.
  • This creates a raw camera image 400 which can also be referred to as an image, which is divided in the middle in the case of two motifs and shows one motif on one side and the second motif on the other.
  • the raw camera image 400 in the 3: 4 page format which corresponds to a portrait orientation, shows the upper basket 205 in the upper partial image 405 and the lower basket 215 in the lower partial image 410. Due to the non-parallel beam path and the reflections in the Prism as it is in Figure 3 has been described, or on mirror elements, as in Figures 1 and 2 described, the partial images 405, 410 of the camera raw image 400 are upside down in this exemplary embodiment.
  • Figure 5 shows a schematic illustration of a first image 500 of the first interior area 117 Figure 1
  • the image processing device 145 described in FIG Figure 4 The raw camera image described is divided into its two partial images for further processing and rotated by 180 ° in order to align the images correctly.
  • the overall image can also be aligned first and then divided horizontally into its two views.
  • the first image 500 shown in this figure shows the first interior area 117 of the in FIG Figures 1 to 3 described sink interior, which in this embodiment has an upper basket 205 with items to be washed 220 arranged therein and a spray arm 210.
  • the first image 500 shown here can be displayed in a display device, as in FIGS Figures 2 and 3 are described, displayed for a user and / or evaluated by image processing algorithms for certain features (degree of loading, soiling, types of loading, etc.). Depending on the evaluation of these features, the course of the cleaning process can be changed or adapted.
  • Figure 6 shows a schematic representation of a second image 600 of the second interior area 120. Analogous to that in FIG Figure 5 The first image described is also the second image 600 in comparison to the one in FIG Figure 4 described camera raw image shown rotated by 180 °.
  • the second image 600 shows, by way of example only, a lower basket 215 arranged in the second interior area 120 with items to be washed 220 arranged therein.
  • the second image 600 shown here can be used together with the in Figure 5 described first image in a display device, as in the Figures 2 and 3 are described, displayed for a user and / or evaluated by image processing algorithms for certain features (degree of loading, soiling, types of loading, etc.). Depending on the evaluation of these features, the course of the cleaning process can be changed or adapted.
  • different filters can be applied to the individual views at this point in order to optimize the individual display of the images for further processing by image recognition algorithms.

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  • Closed-Circuit Television Systems (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
EP21181161.7A 2020-07-01 2021-06-23 Lave-vaisselle pourvu de dispositif de capture d'image Active EP3932282B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020117334.2A DE102020117334A1 (de) 2020-07-01 2020-07-01 Spülgerät mit Bilderfassungseinrichtung

Publications (3)

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EP3932282A1 true EP3932282A1 (fr) 2022-01-05
EP3932282C0 EP3932282C0 (fr) 2024-01-31
EP3932282B1 EP3932282B1 (fr) 2024-01-31

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EP21181161.7A Active EP3932282B1 (fr) 2020-07-01 2021-06-23 Lave-vaisselle pourvu de dispositif de capture d'image

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DE (1) DE102020117334A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4368093A1 (fr) * 2022-11-11 2024-05-15 Miele & Cie. KG Procédé de fonctionnement d'un appareil de nettoyage, procédé d'entraînement d'un réseau neuronal et appareil de nettoyage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017118023A1 (de) * 2017-08-08 2019-02-14 Vorwerk & Co. Interholding Gmbh Verfahren zum Betrieb einer Spülmaschine sowie Spülmaschine
US10425567B2 (en) * 2014-07-09 2019-09-24 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Apparatus and method for detecting an object area with a multi-aperture device in a flat housing
EP3847945A1 (fr) * 2020-01-07 2021-07-14 Miele & Cie. KG Lave-vaisselle, en particulier lave-vaisselle électroménager

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10425567B2 (en) * 2014-07-09 2019-09-24 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Apparatus and method for detecting an object area with a multi-aperture device in a flat housing
DE102017118023A1 (de) * 2017-08-08 2019-02-14 Vorwerk & Co. Interholding Gmbh Verfahren zum Betrieb einer Spülmaschine sowie Spülmaschine
EP3847945A1 (fr) * 2020-01-07 2021-07-14 Miele & Cie. KG Lave-vaisselle, en particulier lave-vaisselle électroménager

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4368093A1 (fr) * 2022-11-11 2024-05-15 Miele & Cie. KG Procédé de fonctionnement d'un appareil de nettoyage, procédé d'entraînement d'un réseau neuronal et appareil de nettoyage

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EP3932282C0 (fr) 2024-01-31
DE102020117334A1 (de) 2022-01-05
EP3932282B1 (fr) 2024-01-31

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Effective date: 20240206