Dishwasher

Abstract

The utility model relates to the technical field of dish washing machines, and discloses a dish washing machine. The tableware detection assembly comprises a laser device and an image acquisition module, the laser device is arranged on the side wall of the inner container, laser emitted by the laser device forms laser stripes after passing through the bowl basket, and the image acquisition module is used for acquiring laser stripe images; and the controller is used for receiving the laser stripe image acquired by the image acquisition module and judging the size and / or quantity of the tableware in the bowl basket according to the laser stripe image. According to the utility model, laser stripes formed by laser are clear, and even if light is arranged in the inner container, the laser stripes can be obviously distinguished, so that the quantity and the size of tableware can be more accurately judged.

Description

Technical Field

[0001] The utility model relates to the technical field of dishwashers, in particular to a dishwasher. Background Art

[0002] In recent years, more and more families choose to equip their kitchens with dishwashers to reduce the labor burden. With the development of technology and the improvement of people's living standards, the intelligence of dishwashers has gradually improved.

[0003] For most current dishwashers, each washing mode has a fixed washing process and water volume. When the dishwasher washes a small amount of dishes, it also delivers a fixed amount of water, which results in a waste of water and resources.

[0004] The related technology discloses a dishwasher and a control method thereof, wherein a light transmitter is arranged to transmit a light signal and a light receiver is arranged to receive the light signal, and the number of dishes in the dishwasher is automatically determined by receiving the light signal information, and a suitable washing mode is selected. However, when a light is arranged inside the dishwasher, it may overlap with the transmitted light signal, resulting in an inaccurate signal received by the light receiver, and thus an inaccurate determination of the number of dishes. Utility Model Content

[0005] In view of this, the utility model provides a dishwasher to solve the problem of inaccurate judgment of the number of tableware in the related art.

[0006] In a first aspect, the utility model provides a dishwasher, comprising:

[0007] Liner;

[0008] The tableware detection component includes a laser and an image acquisition module. The laser is arranged on the side wall of the inner pot. The laser emitted by the laser forms laser stripes after passing through the bowl basket. The image acquisition module is used to acquire the laser stripe image.

[0009] The controller is used to receive the laser stripe image acquired by the image acquisition module, and judge the size and / or quantity of the tableware in the bowl basket accordingly.

[0010] Beneficial effect: When the laser emitted by the laser irradiates the bowl basket containing tableware, the laser will diffract and the light path will be distorted to form laser stripes with protrusions and grooves. The image acquisition module acquires the laser stripe image after passing through the bowl basket. The controller receives the laser stripe image acquired by the image acquisition module. The size and / or quantity of tableware in the bowl basket can be judged according to the laser stripe image. The laser stripes formed by the laser are clear and distinct. Even if there is a light in the inner pot, the laser stripes can be clearly distinguished, so the quantity and size of the tableware can be judged more accurately.

[0011] In an optional implementation, the laser and the image acquisition module are integrated into one.

[0012] Beneficial effect: By integrating the laser and the image acquisition module, it is easier to install the tableware detection component and the structure is simpler.

[0013] In an optional embodiment, the side wall of the inner pot is provided with a slide rail, and the slide rail extends in a direction parallel to the pulling direction of the bowl basket. The dishwasher also includes a driving mechanism, and the driving mechanism is connected to the laser and is used to drive the laser to move along the slide rail.

[0014] Beneficial effect: By setting up a slide rail and a driving mechanism, the driving mechanism can drive the laser device to move along the slide rail. When the driving mechanism drives the laser to move from one end of the slide rail to the other end, the laser is always on, so the laser emitted by the laser also moves to scan the tableware. When the laser is moving, the image acquisition module collects the laser stripe image formed after the laser passes through the tableware in real time. When the tableware detection component moves to the other end, the scan is completed. The controller receives the laser stripe image during the entire movement process, and can more accurately judge the size and quantity of the tableware.

[0015] In an optional embodiment, the outer cover of the tableware detection assembly is provided with a transparent window.

[0016] Beneficial effect: The setting of the transparent window can prevent water in the inner tank of the dishwasher from entering the laser and the image acquisition module when the dishwasher is working, thereby protecting the laser and the image acquisition module.

[0017] In an optional implementation, the image acquisition module is configured with a filter.

[0018] Beneficial effect: The setting of the filter can enable the image acquisition module to specifically acquire the laser stripe image and avoid interference from other light sources.

[0019] In an optional embodiment, the dishwasher includes an upper basket and a lower basket, and correspondingly, the tableware detection components are provided in two groups, one group of the tableware detection components is provided above one side of the upper basket, and the other group of the tableware detection components is provided above one side of the lower basket.

[0020] Beneficial effects: the laser in the tableware detection assembly arranged above one side of the upper basket can perform laser scanning on the upper basket, the image acquisition module can collect in real time the laser stripe image formed after the laser passes through the tableware, after the controller receives the laser stripe image information above one side of the upper basket, the size and quantity of the tableware on the upper basket can be accurately determined, the laser in the tableware detection assembly arranged above one side of the lower basket can perform laser scanning on the lower basket, the image acquisition module can collect in real time the laser stripe image formed after the laser passes through the tableware, after the controller receives the laser stripe image information above one side of the lower basket, the size and quantity of the tableware on the lower basket can be accurately determined. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of an inner tank of a dishwasher according to an embodiment of the utility model;

[0023] Figure 2 A schematic diagram of laser stripes formed when laser is irradiated on a bowl basket without an object;

[0024] Figure 3 A schematic diagram of laser stripes formed when laser is irradiated on a bowl basket containing tableware;

[0025] Figure 4 The present invention is a flowchart of a method for controlling a dishwasher according to an embodiment of the present invention.

[0026] Description of reference numerals:

[0027] 1. Inner pot; 2. Tableware detection component; 201. Laser; 3. Slide rail. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0029] Related art discloses a dishwasher and a control method thereof, wherein the dishwasher includes an inner tank and a shelf; a detection device includes a transmitter and a receiver located on both sides of the shelf, wherein the transmitter is used to transmit a signal to the area where the shelf is located, and the receiver is used to receive the signal and feed the signal information back to a controller; and a controller, wherein the controller determines the corresponding washing mode according to the strength of the signal information, and controls the dishwasher to wash according to the washing mode. The signal emitted by the transmitter is a light signal or an acoustic signal; the transmitter is a light transmitter, and the receiver is a light receiver, wherein the light transmitter is used to transmit a light signal, and the light receiver is used to receive the light signal and feed the light signal information back to the controller, and the controller determines the light intensity according to the light signal information and determines the corresponding washing mode according to the light intensity; or the transmitter is a light transmitter, and the receiver is a light intensity meter, wherein the light transmitter is used to transmit a light signal, and the light intensity meter is used to receive the light signal and determine the light intensity information and feed the light intensity information back to the controller.

[0030] The above-mentioned related technology automatically determines the number of dishes in the dishwasher by setting a light transmitter to emit a light signal and a light receiver to receive the light signal, and selects a suitable washing mode by receiving the light signal information. However, when the dishwasher is equipped with a light, it may overlap with the emitted light signal, resulting in inaccurate signal received by the light receiver, and thus inaccurate judgment of the number of dishes.

[0031] The related technology also discloses a device for determining the number of tableware sets and a dishwasher, wherein the device for determining the number of tableware sets is connected to the dishwasher; the dishwasher includes a controller, a washing module and a tableware rack connected in sequence; the device for determining the number of tableware sets includes an image acquisition module and a control module; the image acquisition module is set at a preset position of the dishwasher; the control module is connected to the controller; the image acquisition module is used to acquire an image of the tableware rack; the control module is used to receive the image and obtain a parameter of the number of tableware in the tableware rack based on the image; based on the parameter of the number of tableware in the tableware rack, the number of tableware sets in the tableware rack is output to the controller, so that the controller determines the washing parameter according to the number of tableware sets and controls the washing module to wash the tableware placed in the tableware rack. The image acquisition module includes a depth image acquisition module, which includes a first depth camera, a second depth camera and a third depth camera, and the three depth cameras are respectively set at different positions, and a turntable and a motor are set at the bottom, and the structure is complex.

[0032] Combine the following Figures 1 to 4 , describing an embodiment of the utility model.

[0033] According to an embodiment of the present utility model, on one hand, a dishwasher is provided, comprising an inner tank 1, a tableware detection component 2 and a controller.

[0034] Among them, the tableware detection component 2 includes a laser 201 and an image acquisition module. The laser 201 is arranged on the side wall of the inner pot 1. The laser emitted by the laser 201 forms laser stripes after passing through the bowl basket. The image acquisition module is used to collect laser stripe images; the controller is used to receive the laser stripe images collected by the image acquisition module, and judge the size and / or quantity of the tableware in the bowl basket accordingly.

[0035] In this embodiment, when the laser emitted by the laser 201 irradiates the bowl basket containing tableware, the laser will undergo diffraction, the optical path will be distorted, and laser stripes with protrusions and grooves will be formed. The image acquisition module acquires the laser stripe image after passing through the bowl basket, and the controller receives the laser stripe image acquired by the image acquisition module. The size and / or quantity of the tableware in the bowl basket can be judged according to the laser stripe image. The laser stripes formed by the laser are clear and distinct. Even if a light is provided in the inner pot 1, the laser stripes can be clearly distinguished, so the quantity and size of the tableware can be judged more accurately.

[0036] Moreover, compared with the related art of setting a first depth camera, a second depth camera and a third depth camera, the laser 201 and the image acquisition module are set on the side wall of the inner tank 1, and the structure is simpler.

[0037] Specifically in one embodiment, Figure 2 As shown in the figure, when the laser is irradiated on a bowl basket without an object, the laser line is straight and there is no diffraction phenomenon. Figure 3 As shown in the figure, when the laser is irradiated on the bowl basket containing tableware, the infrared laser will diffract and the optical path will be distorted. This principle can be used to know the amount of laser distortion and thus determine the amount of tableware in the bowl basket. The length of the diffracted laser stripes can be used to determine the size of the tableware. The image acquisition module collects the image information of the laser stripes and synchronously processes the image. After obtaining the relevant information, it feeds back the information to the controller, which can select the appropriate amount of washing water and washing program based on the diffraction information, thereby saving water resources and energy.

[0038] Specifically in one embodiment, the image acquisition module is a CCD camera, which has the characteristics of small size, light weight, unaffected by magnetic fields, and resistant to vibration and impact.

[0039] In one embodiment, the laser 201 and the image acquisition module are integrated into one.

[0040] In this embodiment, by integrating the laser 201 and the image acquisition module, it is easier to install the tableware detection component 2 and the structure is simpler.

[0041] Of course, in an embodiment not shown in the figure, the laser 201 and the image acquisition module can be a split structure, and during installation, the laser 201 and the image acquisition module are installed in the inner tank 1 respectively.

[0042] When the laser 201 and the image acquisition module are of a split structure, the laser 201 and the image acquisition module can be installed on different side walls of the inner container 1.

[0043] In one embodiment, a side wall of the inner pot 1 is provided with a slide rail 3, which extends in a direction parallel to the pulling direction of the bowl basket. The dishwasher also includes a driving mechanism, which is connected to the laser 201 and is used to drive the laser 201 to move along the slide rail 3.

[0044] In this embodiment, by setting the slide rail 3 and the driving mechanism, the driving mechanism can drive the laser 201 to move along the slide rail 3. When the driving mechanism drives the laser 201 to move from one end of the slide rail 3 to the other end, the laser 201 is always on, so the laser emitted by the laser 201 also moves to scan the tableware. When the laser 201 is moving, the image acquisition module collects the laser stripe image formed after the laser passes through the tableware in real time. When the tableware detection component 2 moves to the other end, the scan is completed. The controller receives the laser stripe image during the entire movement process, and can more accurately determine the size and quantity of the tableware.

[0045] Specifically in one embodiment, the laser 201 and the image acquisition module are integrated into one. When the driving mechanism is working, the laser 201 and the image acquisition module are driven by the driving mechanism to move along the slide rail 3 at the same time. When the driving mechanism drives the laser 201 and the image acquisition module to move from one end of the slide rail 3 to the other end, the laser 201 is always on, so the laser emitted by the laser 201 also moves to scan the tableware. When the laser 201 is moving, the image acquisition module collects the laser stripe image formed after the laser passes through the tableware in real time. When the tableware detection component 2 moves to the other end, the scan is completed. The controller receives the laser stripe image during the entire movement process, and can more accurately determine the size and quantity of the tableware.

[0046] Specifically in one embodiment, when the laser 201 and the image acquisition module are split structures, the driving mechanism can only drive the laser 201 to move along the slide rail 3, and the position of the image acquisition module remains unchanged. When the driving mechanism drives the laser 201 to move from one end of the slide rail 3 to the other end, the laser 201 is always on, so the laser emitted by the laser 201 also moves to scan the tableware. During the movement of the laser 201, the image acquisition module collects the laser stripe image formed after the laser passes through the tableware in real time. When the tableware detection component 2 moves to the other end, the scan is completed, and the controller receives the laser stripe image during the entire movement process, which can more accurately determine the size and quantity of the tableware.

[0047] In an embodiment not shown in the figure, the slide rail 3 and the driving mechanism may not be provided, and a plurality of lasers 201 may be provided in a direction parallel to the pulling direction of the bowl basket. The plurality of lasers 201 may emit lasers simultaneously or sequentially. The image acquisition module acquires laser stripe images formed after the lasers emitted by the plurality of lasers 201 pass through the bowl basket. The controller receives the plurality of laser stripe images and judges the size and quantity of the tableware based on the images.

[0048] In another embodiment not shown in the figure, the slide rail 3 and the driving mechanism may not be provided, and the position of the laser 201 is fixed. Specifically, the laser 201 may be arranged at a position close to the door body, and the bowl basket may be pulled out. After the bowl basket is loaded with tableware, the bowl basket is pushed inward into the inner pot 1. During the process of pushing the bowl basket into the inner pot 1, the laser 201 continuously emits laser to scan the bowl basket. The image acquisition module acquires the laser stripe image formed by the laser emitted by the laser 201 after passing through the bowl basket. The controller receives the laser stripe image and judges the size and quantity of the tableware accordingly.

[0049] Specifically in one embodiment, the driving mechanism is a linear motor.

[0050] Specifically in one embodiment, the driving mechanism includes a motor, a gear and a rack, the gear is connected to the output shaft of the motor, the rack is meshed with the gear, and the rack is connected to the laser 201.

[0051] Specifically in one embodiment, the driving mechanism includes a motor and a ball screw, and a nut on the ball screw is connected to the laser 201 .

[0052] In one embodiment, the outer side cover of the tableware detection assembly 2 is provided with a transparent window.

[0053] In this embodiment, the transparent window can prevent water in the inner tank 1 from entering the laser 201 and the image acquisition module when the dishwasher is working, thereby protecting the laser 201 and the image acquisition module.

[0054] Specifically in one embodiment, the laser 201 is integrated with the image acquisition module, and the transparent window is simultaneously provided to cover the laser 201 and the image acquisition module.

[0055] Specifically in one embodiment, when the laser 201 and the image acquisition module are separately provided, the transparent window can be respectively provided to cover the outside of the laser 201 and the outside of the image acquisition module.

[0056] Specifically in one embodiment, the laser 201 is integrated with the image acquisition module, and the side wall of the inner tank 1 is provided with a slide rail 3, which extends in a direction parallel to the pulling direction of the bowl basket. The dishwasher also includes a driving mechanism, which is connected to the laser 201 and is used to drive the laser 201 to move along the slide rail 3. A transparent window cover is provided outside the slide rail 3, and the slide rail 3, the driving mechanism, the laser 201 and the image acquisition module are covered inside at the same time.

[0057] In one embodiment, the image acquisition module is configured with a filter.

[0058] In this embodiment, the setting of the filter can enable the image acquisition module to specifically acquire the laser stripe image and avoid interference from other light sources.

[0059] In one embodiment, the dishwasher includes an upper basket and a lower basket. Correspondingly, two sets of tableware detection components 2 are provided, one set of tableware detection components 2 is provided above one side of the upper basket, and the other set of tableware detection components 2 is provided above one side of the lower basket.

[0060] In this embodiment, the laser 201 in the tableware detection assembly 2 disposed above one side of the upper basket can perform laser scanning on the upper basket, and the image acquisition module can collect in real time the laser stripe image formed after the laser passes through the tableware. After the controller receives the laser stripe image information above one side of the upper basket, the size and quantity of the tableware on the upper basket can be accurately determined. The laser 201 in the tableware detection assembly 2 disposed above one side of the lower basket can perform laser scanning on the lower basket, and the image acquisition module can collect in real time the laser stripe image formed after the laser passes through the tableware. After the controller receives the laser stripe image information above one side of the lower basket, the size and quantity of the tableware on the lower basket can be accurately determined.

[0061] Specifically in one embodiment, two slide rails 3 are provided on the side wall of the inner pot 1, one slide rail 3 is located above one side of the upper bowl basket, and the other slide rail 3 is located above one side of the lower bowl basket. A set of tableware detection components 2 can be slidably provided on the slide rail 3 above the upper bowl basket, and another set of tableware detection components 2 can be slidably provided on the slide rail 3 above the lower bowl basket. When the door of the dishwasher is closed, the upper and lower driving mechanisms simultaneously drive the tableware detection component 2 on the slide rail 3 to move along the slide rail 3. When the driving mechanism drives the laser 201 to move from one end of the slide rail 3 to the other end, the laser 201 is always on, so the laser emitted by the laser 201 also moves. The laser 201 located above the upper basket scans the tableware in the upper basket, and the laser 201 located above the lower basket scans the tableware in the lower basket. During the movement of the laser 201, the image acquisition module real-time acquires the laser stripe image formed after the laser passes through the tableware. When the tableware detection component 2 moves to the other end, the scanning is completed, and the controller receives the laser stripe image during the entire movement process, which can more accurately determine the size and quantity of the tableware in the upper basket and the size and quantity of the tableware in the lower basket.

[0062] According to an embodiment of the utility model, in a second aspect, a control method for a dishwasher is provided. The dishwasher comprises an inner tank 1 and a tableware detection component 2. The tableware detection component 2 comprises a laser 201 and an image acquisition module. The laser 201 is arranged on the side wall of the inner tank 1. The laser emitted by the laser 201 forms laser stripes after passing through the bowl basket. The image acquisition module is used to acquire laser stripe images, such as Figure 4 As shown, the control method includes:

[0063] Acquire laser stripe images;

[0064] judging the size and / or quantity of the tableware according to the laser stripe image;

[0065] Adapt the wash programme to the size and / or quantity of dishes.

[0066] In this embodiment, when the laser emitted by the laser 201 irradiates the bowl basket containing tableware, the laser will diffract, the optical path will be distorted, and laser stripes with protrusions and grooves will be formed. The image acquisition module collects the laser stripe image after passing through the bowl basket. After the laser stripe image is obtained, the size and / or number of tableware in the bowl basket can be judged according to the laser stripe image, and the washing program can be adjusted according to the size and / or number of tableware, so as to save water resources and energy. Since the laser stripes formed by the laser are clear, even if there is a light in the inner tank 1, the laser stripes can be clearly distinguished, so the number and size of the tableware can be judged more accurately.

[0067] Specifically in one embodiment, Figure 2As shown in the figure, when the laser is irradiated on a bowl basket without an object, the laser line is straight and there is no diffraction phenomenon. Figure 3 As shown in the figure, when the laser is irradiated on the bowl basket containing tableware, the infrared laser will diffract and the light path will be distorted. This principle can be used to determine the amount of laser distortion and the amount of tableware in the bowl basket. The length of the diffracted laser stripes can be used to determine the size of the tableware.

[0068] Specifically in one embodiment, the image acquisition module is a CCD camera, which has the characteristics of small size, light weight, unaffected by magnetic fields, and resistant to vibration and impact.

[0069] In one embodiment, the laser 201 and the image acquisition module are integrated into one.

[0070] In one embodiment, adjusting the washing program includes adjusting at least one of the washing time, the washing stage, the washing temperature, and the washing water volume.

[0071] In this embodiment, after determining the number and size of dishes in the bowl basket, at least one of the washing time, washing stage, washing temperature, and washing water volume is adjusted according to the number and size of the dishes, thereby saving the washing time and washing water volume of the dishwasher and being more energy-efficient.

[0072] In one embodiment, adjusting the washing program includes adjusting the washing time, washing stage, washing temperature, and washing water volume. After determining the number and size of the dishes in the bowl basket, the washing time, washing stage, washing temperature, and washing water volume are adjusted according to the number and size of the dishes.

[0073] In one embodiment, the control method further includes:

[0074] Determine the placement area of ​​tableware based on the laser stripe image;

[0075] Control the spray arm assembly to flush the placement area.

[0076] In this embodiment, the placement area of ​​the tableware can be determined based on the position of the distortion in the laser stripe image, and the spray arm assembly can be controlled to flush the placement area, so that the placement area of ​​the tableware can be cleaned in a targeted manner, which can improve the cleaning efficiency.

[0077] In one embodiment, a side wall of the inner container 1 is provided with a slide rail 3, and the slide rail 3 extends in a direction parallel to the pulling direction of the bowl basket. The dishwasher further comprises a driving mechanism, and the driving mechanism is connected to the laser 201 and is used to drive the laser 201 to move along the slide rail 3. The control method comprises:

[0078] After the door of the dishwasher is closed, the driving mechanism drives the laser 201 to move from one end of the slide rail 3 to the other end;

[0079] Acquiring the laser stripe image includes continuously acquiring the laser stripe image during the movement of the laser 201 .

[0080] In this embodiment, the user loads a certain amount of tableware according to the washing requirements. The user loads the tableware on the bowl basket and closes the dishwasher door. At this time, the dishwasher is in a closed state. The driving mechanism drives the laser 201 to move along the slide rail 3. When the driving mechanism drives the laser 201 to move from one end of the slide rail 3 to the other end, the laser 201 is always on, so the laser emitted by the laser 201 also moves with the movement to scan the tableware. During the movement of the laser 201, the image acquisition module collects the laser stripe image formed by the laser passing through the tableware in real time. When the tableware detection component 2 moves to the other end, the scanning is completed. The controller receives the laser stripe image during the entire movement process, and can more accurately determine the size and quantity of the tableware. In addition, the laser 201 starts to scan the bowl basket only after the door of the dishwasher is closed, which can prevent the laser from harming the human body.

[0081] Specifically in one embodiment, the laser 201 and the image acquisition module are integrated into one. When the driving mechanism is working, the laser 201 and the image acquisition module are driven by the driving mechanism to move along the slide rail 3 at the same time. When the driving mechanism drives the laser 201 and the image acquisition module to move from one end of the slide rail 3 to the other end, the laser 201 is always on, so the laser emitted by the laser 201 also moves to scan the tableware. When the laser 201 is moving, the image acquisition module collects the laser stripe image formed after the laser passes through the tableware in real time. When the tableware detection component 2 moves to the other end, the scan is completed. The controller receives the laser stripe image during the entire movement process, and can more accurately determine the size and quantity of the tableware.

[0082] Specifically in one embodiment, when the laser 201 and the image acquisition module are split structures, the driving mechanism can only drive the laser 201 to move along the slide rail 3, and the position of the image acquisition module remains unchanged. When the driving mechanism drives the laser 201 to move from one end of the slide rail 3 to the other end, the laser 201 is always on, so the laser emitted by the laser 201 also moves to scan the tableware. During the movement of the laser 201, the image acquisition module collects the laser stripe image formed after the laser passes through the tableware in real time. When the tableware detection component 2 moves to the other end, the scan is completed, and the controller receives the laser stripe image during the entire movement process, which can more accurately determine the size and quantity of the tableware.

[0083] Specifically, the user loads a certain number of tableware according to the washing requirements. The user loads the tableware on the bowl basket and closes the dishwasher door. At this time, the dishwasher is in a closed state. The laser 201 in the tableware detection component 2 starts to emit a straight infrared laser. The infrared laser scans the upper and lower bowl baskets. During the scanning process, the image acquisition module in the tableware detection component 2 collects the filtered laser stripe image in real time. At this time, the collected image can avoid the interference caused by the light source set in other inner tanks 1, so that the final detection result is more accurate. According to the collected image, the area where the entire bowl basket diffracts can be determined and the number of diffraction areas can be calculated. The diffraction degree of each diffracted laser stripe is different due to the different sizes of the tableware. When the placed tableware is relatively large, the length and width of the laser stripe diffraction also become longer accordingly. The approximate shape and size of the tableware can be judged according to the collected image, and the position and area where the laser stripe diffracts can be recorded at the same time. The size of the tableware, the area where the tableware is placed, and the number of tableware placed can be obtained through the information in the laser image. The controller can change the logic of the washing program according to the information obtained, and adjust the washing time, washing stage, washing temperature, washing water volume and other information. In addition, the area where the tableware is placed on the bowl basket can be cleaned in a targeted manner, which can save the dishwasher's washing time, washing water, and energy.

[0084] According to an embodiment of the utility model, in a third aspect, a control device for a dishwasher is provided. The dishwasher comprises an inner tank 1 and a tableware detection component 2. The tableware detection component 2 comprises a laser 201 and an image acquisition module. The laser 201 is arranged on the side wall of the inner tank 1. The laser emitted by the laser 201 forms laser stripes after passing through the bowl basket. The image acquisition module is used to acquire laser stripe images. The control device comprises:

[0085] An acquisition module, used for acquiring a laser stripe image;

[0086] A judging module, used for judging the size and / or quantity of tableware according to the laser stripe image;

[0087] An adjustment module for adjusting the washing program according to the size and / or quantity of dishes.

[0088] In this embodiment, when the laser emitted by the laser 201 irradiates the bowl basket containing tableware, the laser will diffract, the optical path will be distorted, and laser stripes with protrusions and grooves will be formed. The image acquisition module acquires the laser stripe image after passing through the bowl basket. After the acquisition module acquires the laser stripe image, the judgment module can judge the size and / or number of tableware in the bowl basket according to the laser stripe image, and the adjustment module adjusts the washing program according to the size and / or number of tableware, which can save water resources and energy. Since the laser stripes formed by the laser are clear, even if there is a light in the inner tank 1, the laser stripes can be clearly distinguished, so the number and size of the tableware can be judged more accurately.

[0089] Specifically in one embodiment, Figure 2 As shown in the figure, when the laser is irradiated on a bowl basket without an object, the laser line is straight and there is no diffraction phenomenon. Figure 3 As shown in the figure, when the laser is irradiated on the bowl basket containing tableware, the infrared laser will diffract and the light path will be distorted. This principle can be used to determine the amount of laser distortion and the amount of tableware in the bowl basket. The length of the diffracted laser stripes can be used to determine the size of the tableware.

[0090] Specifically in one embodiment, the image acquisition module is a CCD camera, which has the characteristics of small size, light weight, unaffected by magnetic fields, and resistant to vibration and impact.

[0091] In one embodiment, the laser 201 and the image acquisition module are integrated into one.

[0092] In one embodiment, adjusting the washing program includes adjusting at least one of the washing time, the washing stage, the washing temperature, and the washing water volume.

[0093] In this embodiment, after the judgment module determines the number and size of the dishes in the bowl basket, the adjustment module adjusts at least one of the washing time, washing stage, washing temperature, and washing water volume according to the number and size of the dishes, which can save the washing time and washing water volume of the dishwasher and save more energy.

[0094] In one embodiment, adjusting the washing program includes adjusting the washing time, washing stage, washing temperature, and washing water volume. After determining the number and size of the dishes in the bowl basket, the washing time, washing stage, washing temperature, and washing water volume are adjusted according to the number and size of the dishes.

[0095] In one embodiment, the determination module is further used to determine the placement area of ​​the tableware according to the laser stripe image;

[0096] The control device also includes an execution module, which is used to control the spray arm assembly to flush the placement area.

[0097] In this embodiment, the judgment module can determine the placement area of ​​the tableware according to the position where the distortion occurs in the laser stripe image, and the execution module controls the spray arm assembly to flush the placement area, so as to achieve targeted cleaning of the placement area of ​​the tableware, which can improve the cleaning efficiency.

[0098] In one embodiment, a side wall of the inner container 1 is provided with a slide rail 3, and the slide rail 3 extends in a direction parallel to the pulling direction of the bowl basket. The dishwasher further comprises a driving mechanism, which is connected to the laser 201 and is used to drive the laser 201 to move along the slide rail 3. The control device comprises:

[0099] The driving module is used to control the driving mechanism to drive the laser 201 to move from one end of the slide rail 3 to the other end after the door of the dishwasher is closed; the acquisition module is used to continuously acquire the laser stripe image during the movement of the laser 201.

[0100] In this embodiment, the user loads a certain number of tableware according to the washing requirements. The user loads the tableware on the bowl basket and closes the dishwasher door. At this time, the dishwasher is in a closed state. The driving module controls the driving mechanism to work and drives the laser 201 to move along the slide rail 3. When the driving mechanism drives the laser 201 to move from one end of the slide rail 3 to the other end, the laser 201 is always on, so the laser emitted by the laser 201 also moves with the movement to scan the tableware. During the movement of the laser 201, the image acquisition module collects the laser stripe image formed by the laser passing through the tableware in real time. When the tableware detection component 2 moves to the other end, the scanning is completed, and the acquisition module obtains the laser stripe image during the entire movement process. The judgment module can more accurately judge the size and quantity of the tableware. In addition, the laser 201 starts to scan the bowl basket only after the door of the dishwasher is closed, which can prevent the laser from harming the human body.

[0101] Specifically in one embodiment, the laser 201 and the image acquisition module are integrated into one. When the driving mechanism is working, the laser 201 and the image acquisition module are driven by the driving mechanism to move along the slide rail 3 at the same time. When the driving mechanism drives the laser 201 and the image acquisition module to move from one end of the slide rail 3 to the other end, the laser 201 is always on, so the laser emitted by the laser 201 also moves to scan the tableware. When the laser 201 is moving, the image acquisition module collects the laser stripe image formed after the laser passes through the tableware in real time. When the tableware detection component 2 moves to the other end, the scan is completed, and the acquisition module obtains the laser stripe image during the entire movement process. The judgment module can more accurately judge the size and quantity of the tableware.

[0102] Specifically in one embodiment, when the laser 201 and the image acquisition module are split structures, the driving mechanism can only drive the laser 201 to move along the slide rail 3, and the position of the image acquisition module remains unchanged. When the driving mechanism drives the laser 201 to move from one end of the slide rail 3 to the other end, the laser 201 is always on, so the laser emitted by the laser 201 also moves to scan the tableware. During the movement of the laser 201, the image acquisition module collects the laser stripe image formed after the laser passes through the tableware in real time. When the tableware detection component 2 moves to the other end, the scan is completed, and the acquisition module obtains the laser stripe image during the entire movement process. The judgment module can more accurately judge the size and quantity of the tableware.

[0103] Specifically, the user loads a certain number of tableware according to the washing requirements. The user loads the tableware on the bowl basket and closes the dishwasher door. At this time, the dishwasher is in a closed state. The laser 201 in the tableware detection component 2 starts to emit a straight infrared laser. The infrared laser scans the upper and lower bowl baskets. During the scanning process, the image acquisition module in the tableware detection component 2 collects the filtered laser stripe image in real time. At this time, the collected image can avoid the interference caused by the light source set in other inner tanks 1, so that the final detection result is more accurate. According to the collected image, the area where the entire bowl basket diffracts can be determined and the number of diffraction areas can be calculated. The diffraction degree of each diffracted laser stripe is different due to the different sizes of the tableware. When the placed tableware is relatively large, the length and width of the laser stripe diffraction also become longer accordingly. The approximate shape and size of the tableware can be judged according to the collected image, and the position and area where the laser stripe diffracts can be recorded at the same time. The size of the tableware, the area where the tableware is placed, and the number of tableware placed can be obtained through the information in the laser image. The controller can change the logic of the washing program according to the information obtained, and adjust the washing time, washing stage, washing temperature, washing water volume and other information. In addition, the area where the tableware is placed on the bowl basket can be cleaned in a targeted manner, which can save the dishwasher's washing time, washing water, and energy.

[0104] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A dishwasher, characterized in that: include: Liner (1); A tableware detection component (2), comprising a laser (201) and an image acquisition module, wherein the laser (201) is arranged on the side wall of the inner pot (1), the laser light emitted by the laser (201) forms laser stripes after passing through the bowl basket, and the image acquisition module is used to acquire an image of the laser stripes; The controller is used to receive the laser stripe image acquired by the image acquisition module, and judge the size and / or quantity of the tableware in the bowl basket accordingly.

2. The dishwasher according to claim 1, characterized in that The laser (201) and the image acquisition module are integrated into one.

3. The dishwasher according to claim 1 or 2, characterized in that: The side wall of the inner container (1) is provided with a slide rail (3), the slide rail (3) extending in a direction parallel to the pulling direction of the bowl basket, and the dishwasher further comprises a driving mechanism, the driving mechanism being connected to the laser (201) and being used to drive the laser (201) to move along the slide rail (3).

4. The dishwasher according to claim 1 or 2, characterized in that: The outer side cover of the tableware detection component (2) is provided with a transparent window.

5. The dishwasher according to claim 1 or 2, characterized in that: The image acquisition module is equipped with a filter.

6. The dishwasher according to claim 1 or 2, characterized in that: The dishwasher comprises an upper basket and a lower basket. Correspondingly, two sets of tableware detection components (2) are provided, one set of tableware detection components (2) is provided above one side of the upper basket, and the other set of tableware detection components (2) is provided above one side of the lower basket.

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