CN111568239A - Water dispenser control method, water dispenser and computer readable storage medium - Google Patents
Water dispenser control method, water dispenser and computer readable storage medium Download PDFInfo
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- CN111568239A CN111568239A CN202010132857.4A CN202010132857A CN111568239A CN 111568239 A CN111568239 A CN 111568239A CN 202010132857 A CN202010132857 A CN 202010132857A CN 111568239 A CN111568239 A CN 111568239A
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J31/00—Apparatus for making beverages
- A47J31/44—Parts or details or accessories of beverage-making apparatus
- A47J31/54—Water boiling vessels in beverage making machines
- A47J31/56—Water boiling vessels in beverage making machines having water-level controls; having temperature controls
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J31/00—Apparatus for making beverages
- A47J31/44—Parts or details or accessories of beverage-making apparatus
- A47J31/4403—Constructional details
- A47J31/4457—Water-level indicators
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/40—Extraction of image or video features
- G06V10/44—Local feature extraction by analysis of parts of the pattern, e.g. by detecting edges, contours, loops, corners, strokes or intersections; Connectivity analysis, e.g. of connected components
- G06V10/443—Local feature extraction by analysis of parts of the pattern, e.g. by detecting edges, contours, loops, corners, strokes or intersections; Connectivity analysis, e.g. of connected components by matching or filtering
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Abstract
The embodiment of the application discloses a water dispenser control method, a water dispenser and a computer readable storage medium, and can acquire an image below a water outlet of the water dispenser to obtain a background image when a water receiving container is not arranged below the water outlet of the water dispenser; collecting an initial image below a water outlet of the water dispenser; if the difference between the initial image and the background image is larger than a first preset threshold value, determining that the container is placed below a water outlet of the water dispenser, and extracting the port outline of the container from the initial image; controlling the water outlet of the water dispenser, and acquiring a current image containing a container; extracting from the current image a water surface boundary generated based on the container forming tension with the water and comparing the current image to a background image; and when the size difference between the port outline and the water surface boundary is smaller than a preset threshold value or the current image is matched with the background image, controlling the water dispenser to stop discharging water. The scheme improves the accuracy and convenience of the control of the water dispenser.
Description
Technical Field
The application relates to the technical field of household appliances, in particular to a water dispenser control method, a water dispenser and a computer readable storage medium.
Background
Along with the improvement of living standard of people and the increasing popularization of water dispensers, the functional requirements of people on the water dispensers are also higher and higher. At present, in the process of using a water dispenser, a user needs to finish quantitative water taking through key operation, and needs to pay attention to the change of the water level in a water cup continuously when receiving water, judge the water yield by human eyes, and manually control water outlet, water cut-off and the like through keys, so that the intelligent degree is low, the user possibly causes overflow of water by slight carelessness, waste of water resources is caused, and the overflowing hot water also possibly causes scalding and the like. In addition, in the process of receiving water, hands cannot be vacated to do other things, and time is wasted to a certain extent. Although part of the existing water dispensers can set the primary water outlet amount, the existing water dispensers are only suitable for discharging water with a fixed amount from a water cup with a fixed size, and when a user suddenly takes away the water cup in the water discharging process of the water dispensers, the water dispensers still discharge water, so that water resources are wasted or the user is scalded, and the water dispensers cannot be accurately controlled.
Disclosure of Invention
The embodiment of the application provides a water dispenser control method, a water dispenser and a computer-readable storage medium, which can improve the accuracy and convenience of control of the water dispenser.
In a first aspect, an embodiment of the present application provides a method for controlling a water dispenser, including:
when the container for receiving water is not arranged below the water outlet of the water dispenser, acquiring an image below the water outlet of the water dispenser to obtain a background image;
collecting an initial image below a water outlet of the water dispenser;
if the difference between the initial image and the background image is larger than a first preset threshold value, determining that the container is placed below a water outlet of a water dispenser, and extracting a port outline of the container from the initial image;
controlling the water dispenser to discharge water, and collecting a current image containing the container;
extracting from the current image a water surface boundary generated based on the container forming tension with water and comparing the current image to the background image;
and when the size difference between the port outline and the water surface boundary is smaller than a preset threshold value or the current image is matched with the background image, controlling the water dispenser to stop discharging water.
In a second aspect, an embodiment of the present application further provides a water dispenser, which includes a memory and a processor, where the memory stores a computer program, and the processor executes any one of the water dispenser control methods provided in the embodiment of the present application when calling the computer program in the memory.
In a third aspect, an embodiment of the present application further provides a computer-readable storage medium, where the computer-readable storage medium is used for storing a computer program, and the computer program is loaded by a processor to execute any one of the water dispenser control methods provided in the embodiment of the present application.
According to the embodiment of the application, when the container for receiving water is not arranged below the water outlet of the water dispenser, the image below the water outlet of the water dispenser is collected to obtain the background image; acquiring an initial image below a water outlet of the water dispenser, if the difference between the initial image and the background image is greater than a first preset threshold value, determining that a container is placed below the water outlet of the water dispenser, extracting a port outline of the container from the initial image, controlling the water outlet of the water dispenser, and acquiring a current image of the container; then extracting a water surface boundary formed based on the tension of water in the container from the current image, and comparing the current image with the background image; when the size difference between the port outline and the water surface boundary is smaller than a preset threshold value (for example, the container is full), or the current image is matched with the background image (for example, the cup is removed), the water dispenser is controlled to stop discharging water. According to the scheme, double detection can be performed based on comparison of the port outline and the water surface boundary and comparison of the current image and the background image, the water dispenser is accurately controlled to stop water outlet, the water dispenser can be controlled to stop water outlet when the container is moved away, and accuracy and convenience in control over the water dispenser are improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flow chart of a water dispenser control method provided in an embodiment of the present application;
FIG. 2 is a schematic view of a water dispenser provided in the embodiment of the present application without a container placed below the water outlet;
FIG. 3 is a schematic view of a container placed below a water outlet of a water dispenser provided in an embodiment of the present application;
FIG. 4 is a schematic diagram illustrating an output prompt for manual water discharge according to an embodiment of the present disclosure;
FIG. 5 is a schematic view of a camera and a light source installation position provided by an embodiment of the present application;
FIG. 6 is another schematic diagram of a camera and a light source mounting location provided by an embodiment of the present application;
FIG. 7 is a schematic diagram of a water boundary within an extraction vessel as provided by an embodiment of the present application;
FIG. 8 is a schematic diagram of obtaining a circle circumscribing a plurality of discrete regions according to an embodiment of the present application;
FIG. 9 is a schematic diagram comparing port profiles and water surface boundaries of a vessel provided by an embodiment of the present application;
fig. 10 is a schematic structural diagram of a water dispenser provided in the embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The flow diagrams depicted in the figures are merely illustrative and do not necessarily include all of the elements and operations/steps, nor do they necessarily have to be performed in the order depicted. For example, some operations/steps may be decomposed, combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.
The embodiment of the application provides a water dispenser control method, a water dispenser and a computer readable storage medium. The method for controlling the water dispenser can be applied to the water dispenser, and will be described in detail below.
Referring to fig. 1, fig. 1 is a schematic flow chart illustrating a method for controlling a water dispenser according to an embodiment of the present application. The water dispenser control method can comprise steps S101 to S106 and the like, and specifically can be as follows:
s101, when the water receiving container is not placed below the water outlet of the water dispenser, acquiring an image below the water outlet of the water dispenser to obtain a background image.
The type of the container can be flexibly set according to actual needs, and the container is a water cup such as a plastic cup, a ceramic cup, a glass cup or a vacuum cup.
In some embodiments, acquiring an image below the water outlet of the water dispenser and obtaining the background image may include: acquiring images below a water outlet of the water dispenser at intervals of preset time to obtain multi-frame images; and when the difference between the multiple frame images is smaller than a second preset threshold value, selecting one image from the multiple frame images as a background image.
To improve the accuracy of background image acquisition, the background image may be determined by background difference division. Specifically, a camera can be preset around the water outlet of the water dispenser and used for collecting images below the water outlet of the water dispenser, wherein the camera can be an infrared camera or other types of cameras, the specific position of the camera can be flexibly set according to actual needs, for example, the camera can be installed above the water outlet in an inclined manner or close to the position of the water outlet, and the like, so that the camera can accurately collect images in a preset area below the water outlet of the water dispenser. Firstly, images below a water outlet of the water dispenser can be collected through the camera at preset time intervals to obtain multi-frame images, the preset time can be flexibly set according to time requirements, for example, the preset time can be set to be 0.5 or 1 second, and when the preset time is set to be 0.5, 6 frames of images can be collected within 3 seconds.
And then, comparing the multiple frames of images, and judging whether the difference between the multiple frames of images is smaller than a second preset threshold value, wherein the second preset threshold value can be flexibly set according to actual needs. When the difference between each frame of image in the multiple frames of images is smaller than a second preset threshold, it indicates that no container is placed below the water outlet of the water dispenser, as shown in fig. 2, at this time, one image may be selected from the multiple frames of images as a background image, for example, the first frame or the last frame of image that is acquired may be used as the background image. When the difference between each frame of image in the plurality of frames of images is larger than or equal to a second preset threshold value, it is indicated that objects such as a container and the like are placed below the water outlet of the water dispenser, and at the moment, the background image cannot be determined.
S102, acquiring an initial image below a water outlet of the water dispenser.
In some embodiments, capturing an initial image of the water dispenser below the water outlet may include: and acquiring an initial image below the water outlet of the water dispenser from the upper part of the container through a camera preset around the water outlet of the water dispenser.
In order to improve the convenience of initial image acquisition, after a background image is obtained, an image below the water outlet of the water dispenser is acquired from the upper part of the container through a camera preset around the water outlet of the water dispenser in real time or at preset time intervals to obtain an initial image.
S103, if the difference between the initial image and the background image is larger than a first preset threshold value, the container is determined to be placed below a water outlet of the water dispenser, and the port outline of the container is extracted from the initial image.
After the initial image and the background image are obtained, the initial image and the background image can be compared, whether the difference between the initial image and the background image is larger than a first preset threshold value or not is judged, and the first preset threshold value can be flexibly set according to actual needs. When the difference between the initial image and the background image is greater than a first preset threshold value, it is determined that the container is placed below the water outlet of the water dispenser, as shown in fig. 3, and at this time, the port profile of the container can be extracted from the initial image. When the difference between the initial image and the background image is smaller than or equal to a first preset threshold value, it is indicated that no container is placed below the water outlet of the water dispenser. Wherein the port profile may be an upper port edge of the container for ingress and egress of water (e.g., a cup edge).
In some embodiments, extracting the port profile of the container from the initial image may include: comparing the initial image with the background image to obtain a pixel difference; determining a port profile of the container according to the pixel difference; or carrying out port contour recognition on the initial image through the trained recognition model to obtain the port contour of the container.
Specifically, when no object such as a container is placed below the water outlet of the water dispenser, the picture (i.e., the image) acquired by the camera is generally fixed, so that when the container for receiving water is not placed below the water outlet of the water dispenser, the image below the water outlet of the water dispenser is acquired by the camera preset in the water dispenser to obtain a background image, and the background image does not contain the container. When objects such as a container and the like are placed in the water receiving area below the water outlet of the water dispenser, the picture of the area where the container is located can be obviously different from the background image, so that the collected initial image and the background image can be subjected to pixel comparison, for example, the initial image and the background image are subjected to difference processing to obtain pixel difference, the pixel difference can be the pixel of the area where the pixel value in the initial image is not matched with the pixel value in the background image, the area where the container is located can be determined according to the area where the pixel difference is located, the edge of the area where the container is located is a port outline, and the port outline can be a circle, an ellipse or a polygon. When the detected port profiles include a plurality of port profiles, the port profile with the minimum port profile among the plurality of port profiles can be set as the port profile of the container, and the influence of port profile acquisition caused by special design of the port of the container is avoided.
Or, the port contour of the container can be obtained by carrying out port contour recognition on the initial image through the trained recognition model. The type of the recognition model can be flexibly set according to actual needs, the recognition model can be a target detection model SSD or YOLOv3, and the recognition model can also be a convolutional neural network CNN or R-CNN. The recognition model can be trained through a plurality of sample images containing port outlines of containers of different types, and the trained recognition model is obtained.
It should be noted that, in order to solve the problem that the container is too high to accurately extract the port profile from the container image, the height of the camera for collecting the container image may be dynamically adjustable, and at this time, the current height of the camera may be dynamically adjusted according to the height of the container, so that the camera may accurately collect the container image.
In some embodiments, after determining that the container is placed below the water outlet of the water dispenser, the water dispenser control method may include: when the port contour of the container is not extracted, prompt information of manual water discharging is output.
In order to improve the flexibility of controlling the water dispenser, when the abnormal condition occurs and the port outline of the container cannot be accurately extracted from the acquired container image, the prompt information of manual water discharging can be output so as to remind a user to control the water dispenser to discharge water by clicking or pressing a preset water discharging button on the water dispenser, and control the water dispenser to stop discharging water by clicking or pressing a preset water stopping button on the water dispenser. The water discharging key and the water stopping key can be the same physical key or virtual key, the water discharging key and the water stopping key can also be independent physical keys or virtual keys respectively, the setting positions, colors, sizes or icons and the like of the water discharging key and the water stopping key can be flexibly set according to actual needs, and the specific content is not limited at this position.
Wherein, the mode of the prompt message of the manual drainage of output can include: outputting prompt information of manual water discharging through voice broadcasting at a voice module preset in the water dispenser, or displaying the prompt information of the manual water discharging through a display screen preset in the water dispenser, as shown in fig. 4, or prompting the manual water discharging through flashing of an indicator lamp of the manual water discharging and the like; and so on. Therefore, when the abnormal detection condition occurs and water cannot be discharged, a user can be timely reminded to manually control the water dispenser to discharge water, and the trouble that the user mistakenly regards the damage of the water dispenser to carry out maintenance is avoided.
And S104, controlling the water outlet of the water dispenser and collecting the current image containing the container.
After the port contour of the container is obtained, the water outlet of the water dispenser can be controlled, and the image of the water receiving area, below the water outlet of the water dispenser, of the container is collected in real time or at preset time intervals, so that the current image of the container is obtained, and the preset time can be flexibly set according to actual needs.
It should be noted that, the step of extracting the port profile of the container from the initial image and controlling the water outlet of the water dispenser may be flexibly set according to actual needs, for example, the step of extracting the port profile of the container from the initial image and then controlling the water outlet of the water dispenser may be performed first, or the step of controlling the water outlet of the water dispenser and then extracting the port profile of the container from the initial image may be performed first, and specific contents are not limited herein.
In some embodiments, acquiring the current image containing the container may include: when the camera preset around the water outlet of the water dispenser collects water vapor or the water outlet temperature of the water dispenser is higher than a preset temperature threshold value, a preset fan is controlled to be started, a filter plate preset by the camera is controlled to be heated, and/or a dust cover preset by the camera is controlled to be heated; after the fan is turned on, the filter plate is heated and/or the dust cover is heated, the current image containing the container is collected through the camera.
Because the water dispenser can generate steam due to overhigh water temperature when hot water is discharged, in order to effectively detect a clear current image, the influence of the steam can be reduced through a fan, a filter plate, a dust cover and the like. Specifically, in an embodiment, a fan may be disposed on the water dispenser, for example, the fan is disposed in the middle of an oblique upper portion of a water outlet of the water dispenser, right above a water receiving area of the water dispenser, or on a side surface of the water receiving area of the water dispenser, or the fan is disposed around the water dispenser, the type and size of the fan may be flexibly set according to actual needs, and the fan is turned on to expel water vapor within a visible range of the camera, so as to improve the quality of images acquired by the camera. When the water dispenser discharges water, whether water vapor exists or not can be detected through cameras or other sensors and the like preset around a water outlet of the water dispenser, when the water vapor is detected, a preset fan is controlled to be started, and after the fan is started, a current image containing a container is acquired through the cameras. Or when the water dispenser discharges water, the water outlet temperature of the water dispenser can be detected, whether the water outlet temperature of the water dispenser is larger than a preset temperature threshold value or not is judged, when the water outlet temperature of the water dispenser is larger than the preset temperature threshold value, a preset fan is controlled to be started, and after the fan is started, a current image containing a container is acquired through the camera. When the water outlet temperature of the water dispenser is less than or equal to the preset temperature threshold, the fan does not need to be started.
In another embodiment, a filter can be arranged near the lens of the camera or at other positions, and water vapor on the lens of the camera can be driven away by heating the preset filter, so that the quality of the image collected by the camera is improved. When the water dispenser goes out water, whether the detection of camera or other sensors etc. that predetermine around the delivery port through the water dispenser exists vapor can be detected, when detecting vapor, the heating of predetermined filter is controlled, and after the filter heating, current image including the container is gathered through the camera. Or when the water dispenser discharges water, the water outlet temperature of the water dispenser can be detected, whether the water outlet temperature of the water dispenser is larger than a preset temperature threshold value or not is judged, when the water outlet temperature of the water dispenser is larger than the preset temperature threshold value, a preset filter plate is controlled to be heated, and after the filter plate is heated, a current image containing a container is collected through a camera. When the water outlet temperature of the water dispenser is less than or equal to the preset temperature threshold, the filter does not need to be heated.
In another embodiment, a dust cover (such as glass, akron force, etc.) may be disposed near or at other positions of the lens of the camera, and the preset dust cover may be heated to expel water vapor on the lens of the camera, thereby improving the quality of the image captured by the camera. When the water dispenser discharges water, whether water vapor exists or not can be detected through cameras or other sensors and the like preset around a water outlet of the water dispenser, when the water vapor is detected, a preset dustproof cover is controlled to be heated, and after the dustproof cover is heated, a current image containing a container is acquired through the cameras. Or when the water dispenser discharges water, the water outlet temperature of the water dispenser can be detected, whether the water outlet temperature of the water dispenser is larger than a preset temperature threshold value or not is judged, when the water outlet temperature of the water dispenser is larger than the preset temperature threshold value, a preset dustproof cover is controlled to be heated, and after the dustproof cover is heated, a current image containing a container is acquired through the camera. When the water outlet temperature of the water dispenser is less than or equal to the preset temperature threshold, the dustproof cover does not need to be heated.
It should be noted that the water dispenser may only be provided with any one or two of dust cover heating, fan turning on and filter heating, and the water dispenser may also be provided with dust cover heating, fan turning on, filter heating and the like, and the specific content is not limited herein.
In some embodiments, acquiring the current image containing the container may include: detecting the current light intensity of the environment where the water dispenser is located; if the current light intensity is smaller than a preset intensity threshold value, controlling a preset light supplement lamp to be started; and after the light supplement lamp is turned on, acquiring a current image containing the container.
Because the quality of the current image can be affected when the light intensity of the environment is weak, in order to effectively detect the clear current image, the light intensity can be enhanced to reduce the influence on image acquisition. Specifically, an LED light source may be disposed on the water dispenser as a fill-in light, for example, as shown in fig. 5, the camera and the fill-in light (i.e., the light source in fig. 5) may be installed obliquely above the water outlet of the water dispenser, or, for example, as shown in fig. 6, the camera and the fill-in light (i.e., the light source in fig. 6) may be installed in the middle of the water receiving area of the water dispenser in parallel, near the water outlet, and in the same direction. The effect of light filling lamp is the illumination condition of reinforcing water receiving area for it is more controllable, thereby improves the quality that the camera gathered the image. When the water dispenser is used for discharging water, the current light intensity of the environment where the water dispenser is located can be detected through the light sensor, whether the current light intensity is smaller than a preset intensity threshold value or not is judged, the preset intensity threshold value can be flexibly set according to actual needs, and under the condition that the current light intensity is larger than or equal to the preset intensity threshold value, clear images can be collected by the camera. If the current light intensity is smaller than the preset intensity threshold value, the current light of the environment where the water dispenser is located is relatively weak, the preset light supplement lamp can be controlled to be turned on at the moment, and after the light supplement lamp is turned on, the current image containing the container is collected through the camera. If the current light intensity is greater than or equal to the preset intensity threshold value, the light supplement lamp does not need to be started.
S105, extracting a water surface boundary generated based on the tension formed between the container and the water from the current image, and comparing the current image with the background image.
The water in the container can form an adhesion effect on the inner wall of the container due to the existence of tension, so that the water optically shows optical characteristics such as abnormal refraction effect, and the optical characteristics can be captured and identified through a camera in the view of visual identification technology. Therefore, as shown in fig. 7, in the process of water outlet of the water dispenser, after the current image containing the container is acquired, the water surface boundary generated based on the tension formed between the container and the water can be extracted from the current image.
It should be noted that, in order to reduce the influence of the ambient light of the water dispenser (for example, dark light or direct light from an indoor light source, etc.), a light supplement may be performed by using a preset LED lamp on or near the water dispenser, for example, the light intensity of the environment of the water dispenser may be detected by a light sensor, whether the LED lamp needs to be turned on or not is determined according to the light intensity, if necessary, a current image containing the container is collected after the LED lamp is turned on, and if the LED lamp does not need to be turned on, the current image containing the container is directly collected, so that a water surface boundary generated based on tension formed by the container and water can be accurately extracted from the current image. In addition, in order to improve the accuracy of acquiring the water surface boundary, filtering or smoothing and other operations can be performed on the extracted water surface boundary, so that noise points, cavity points and the like are filtered, and a smooth water surface boundary is obtained.
In some embodiments, extracting from the current image a water surface boundary generated based on the container forming tension with the water may include: extracting a light reflection boundary formed by tension at the junction of the container and the water from the current image to obtain a circular water surface boundary; or extracting the region where the water wave features are located from the current image to obtain a plurality of discrete regions; determining circumscribed circles for a plurality of discrete regions; the circumscribed circle is set as the water surface boundary within the vessel.
The initial image and the current image may be subjected to pixel comparison, for example, the container image and the background image are subjected to difference processing to obtain a pixel difference, the pixel difference may include pixels of an area where a pixel value in the initial image does not match a pixel value in the current image, and then a light reflection boundary formed at a boundary between the container and the water due to tension may be extracted from the current image according to a comparison result (e.g., the pixel difference), so as to obtain a circular water surface boundary. For another example, in the process of discharging water from the water dispenser, the water level in the container fluctuates due to tension, and the boundary of the water level can be obtained through image analysis because the obvious reflecting boundary is arranged at the boundary of the inner wall of the container. For example, the last current image in the current images of multiple frames is compared with the previous N (the specific value of N is flexibly set according to actual needs) images, so as to obtain an area with obvious brightness difference, which is the area of the current water surface, i.e. the water surface boundary.
Or, the area where the water wave feature is located can be extracted from the current image to obtain a plurality of discrete areas; determining circumscribed circles for a plurality of discrete regions; the circumscribed circle is set as the water surface boundary within the vessel.
Wherein, the water surface in the container can generate the water wave features of bright lines or dark lines due to wave motion or refraction, so that the region where the water wave features are located can be extracted from the acquired current image to obtain a plurality of discrete regions, for example, as shown in fig. 8. And then extracting a plurality of poles of the plurality of discrete areas, connecting the plurality of poles to draw a polygon, drawing circumscribed circles of the plurality of discrete areas according to the circle center by taking the center of the polygon as the circle center, and setting the circumscribed circles as the water surface boundary in the container.
And S106, when the size difference between the port outline and the water surface boundary is smaller than a preset threshold value or the current image is matched with the background image, controlling the water dispenser to stop discharging water.
After the water surface boundary and the port contour of the container are obtained, the port contour and the water surface boundary can be compared, whether the size difference between the port contour and the water surface boundary is smaller than a preset threshold value or not is judged, and the preset threshold value can be flexibly set according to actual needs. And comparing the current image with the background image to judge whether the current image is matched with the background image.
The lower the water level is because the less the water quantity in the container is, the smaller the water surface boundary extracted from the current image is; the more the water amount in the container is, the higher the water level is, the larger the water surface boundary extracted from the current image is, therefore, for example, as shown in fig. 9, when the size difference between the port outline and the water surface boundary is greater than or equal to the preset threshold, it indicates that the water amount in the container is less, and at this time, the water outlet state of the water dispenser can be maintained. When the difference between the port outline and the water surface boundary is smaller than a preset threshold value, the water amount in the container is large (for example, the water in the container is full or the water amount in the container reaches 90 percent), namely the water level approaches the distance of the container port, and the water dispenser can be controlled to stop discharging water. Or, when the current image is matched with the background image (for example, the similarity between the current image and the background image is greater than a preset threshold), it indicates that the container is removed from below the water outlet of the water dispenser, and in order to avoid water resource waste caused by the fact that the water dispenser still discharges water when the container is removed from below the water outlet of the water dispenser, the water dispenser may be controlled to stop discharging water at this time. Not only realizes the automatic control of the water outlet of the water dispenser, but also can effectively reduce the accidents of scalding and the like caused by the overflow of hot water and improve the safety.
It should be noted that, in order to accurately control the water outlet of the water dispenser, a threshold value of the water outlet amount of the primary water outlet of the water dispenser may be set, during the water outlet process of the water dispenser, the size difference between the port profile of the container and the water surface boundary may be detected, the matching degree between the current image and the background image may be detected, and the water outlet amount of the water dispenser may be detected. For example, when the difference between the port profile of the container and the water surface boundary is detected to be smaller than a preset threshold value, even if the water yield of the water dispenser does not reach the water yield threshold value, the water dispenser is controlled to stop water outlet; for another example, when the water outlet amount of the water dispenser does not reach the water amount threshold value, even if the difference between the port profile of the container and the water surface boundary is not detected to be smaller than the preset threshold value, the water dispenser is controlled to stop water outlet. The problem that the water surface boundary in the container cannot be effectively identified (for example, misjudgment of identification caused by the special design of the port of the container, the material or texture of the inner wall of the container, or the water surface boundary or the port outline cannot be identified caused by the placement mode of the container and the like) and water outlet cannot be stopped in time is avoided. For another example, when the matching degree of the current image and the background image is detected to be greater than the preset threshold, even if the water yield of the water dispenser does not reach the water yield threshold, the water dispenser is controlled to stop water outlet.
In some embodiments, when the current image matches the background image, controlling the water dispenser to stop discharging water may include: comparing the current image with the background image to obtain a comparison result; and when the container is determined to be moved away from the lower part of the water outlet of the water dispenser according to the comparison result, determining that the current image is matched with the background image, and controlling the water dispenser to stop water outlet.
In order to improve the flexibility and accuracy of the control of the water dispenser and avoid water resource waste caused by water still flowing out of the water dispenser when a container is moved away in the water outlet process of the water dispenser, the current image and the background image can be subjected to pixel comparison to obtain a comparison result; and when the container is determined to be moved away from the lower part of the water outlet of the water dispenser according to the comparison result, determining that the current image is matched with the background image, for example, the similarity between the current image and the background image is greater than a preset threshold value, and controlling the water dispenser to stop water outlet at the moment.
According to the embodiment of the application, when the container for receiving water is not arranged below the water outlet of the water dispenser, the image below the water outlet of the water dispenser is collected to obtain the background image; acquiring an initial image below a water outlet of the water dispenser, if the difference between the initial image and the background image is greater than a first preset threshold value, determining that a container is placed below the water outlet of the water dispenser, extracting a port outline of the container from the initial image, controlling the water outlet of the water dispenser, and acquiring a current image of the container; then extracting a water surface boundary formed based on the tension of water in the container from the current image, and comparing the current image with the background image; when the size difference between the port outline and the water surface boundary is smaller than a preset threshold value (for example, the container is full), or the current image is matched with the background image (for example, the cup is removed), the water dispenser is controlled to stop discharging water. According to the scheme, double detection can be performed based on comparison of the port outline and the water surface boundary and comparison of the current image and the background image, the water dispenser is accurately controlled to stop water outlet, the water dispenser can be controlled to stop water outlet when the container is moved away, and accuracy and convenience in control over the water dispenser are improved.
Referring to fig. 10, fig. 10 is a schematic block diagram of a structure of a water dispenser provided in the embodiment of the present application.
As shown in fig. 10, the water dispenser 300 may include a processor 302, a memory 303, and a communication interface 304 connected by a system bus 301, wherein the memory 303 may include a non-volatile computer-readable storage medium and an internal memory.
The non-transitory computer readable storage medium may store a computer program. The computer program includes program instructions that, when executed, cause a processor to perform any one of the water dispenser control methods.
The processor 302 is used to provide computing and control capabilities to support the operation of the overall water dispenser.
The memory 303 provides an environment for the execution of a computer program in a non-transitory computer readable storage medium, which when executed by the processor 302, causes the processor 302 to perform any one of the water dispenser control methods.
The communication interface 304 is used for communication. Those skilled in the art will appreciate that the configuration shown in fig. 10 is merely a block diagram of a portion of the configuration associated with the present application and does not constitute a limitation of the water dispenser 300 to which the present application is applied, and that a particular water dispenser 300 may include more or less components than those shown, or combine certain components, or have a different arrangement of components.
It should be understood that the bus 301 is, for example, an I2C (Inter-Integrated Circuit) bus, the Memory 303 may be a Flash chip, a Read-Only Memory (ROM), a magnetic disk, an optical disk, a usb disk, or a removable hard disk, the Processor 302 may be a Central Processing Unit (CPU), the Processor 302 may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs), or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, etc. Wherein a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
Wherein, in some embodiments, the processor 302 is configured to run a computer program stored in the memory 303 to perform the steps of:
when the container for receiving water is not arranged below the water outlet of the water dispenser, acquiring an image below the water outlet of the water dispenser to obtain a background image and acquiring an initial image below the water outlet of the water dispenser; if the difference between the initial image and the background image is larger than a first preset threshold value, determining that the container is placed below a water outlet of the water dispenser, and extracting the port outline of the container from the initial image; controlling water outlet of the water dispenser, acquiring a current image containing a container, extracting a water surface boundary generated based on tension formed between the container and the water from the current image, and comparing the current image with a background image; and when the size difference between the port outline and the water surface boundary is smaller than a preset threshold value or the current image is matched with the background image, controlling the water dispenser to stop discharging water.
In some embodiments, when capturing an image of the water dispenser below the water outlet to obtain a background image, the processor 302 further performs: acquiring images below a water outlet of the water dispenser at intervals of preset time to obtain multi-frame images; and when the difference between the multiple frame images is smaller than a second preset threshold value, selecting one image from the multiple frame images as a background image.
In some embodiments, in capturing an initial image of the water dispenser below the water outlet, the processor 302 further performs: and acquiring an initial image below the water outlet of the water dispenser from the upper part of the container through a camera preset around the water outlet of the water dispenser.
In some embodiments, in extracting the port profile of the container from the initial image, the processor 302 further performs: comparing the initial image with the background image to obtain a pixel difference; determining a port profile of the container according to the pixel difference; or carrying out port contour recognition on the initial image through the trained recognition model to obtain the port contour of the container.
In some embodiments, processor 302, in acquiring the current image containing the container, further performs: when the camera preset around the water outlet of the water dispenser collects water vapor or the water outlet temperature of the water dispenser is higher than a preset temperature threshold value, a preset fan is controlled to be started, a filter plate preset by the camera is controlled to be heated, and/or a dust cover preset by the camera is controlled to be heated; after the fan is turned on, the filter plate is heated and/or the dust cover is heated, the current image containing the container is collected through the camera.
In some embodiments, processor 302, in acquiring the current image containing the container, further performs: detecting the current light intensity of the environment where the water dispenser is located; if the current light intensity is smaller than a preset intensity threshold value, controlling a preset light supplement lamp to be started; and after the light supplement lamp is turned on, acquiring a current image containing the container.
In some embodiments, in controlling the water dispenser to stop draining, the processor 302 further performs: comparing the current image with the background image to obtain a comparison result; and when the container is determined to be moved away from the lower part of the water outlet of the water dispenser according to the comparison result, determining that the current image is matched with the background image, and controlling the water dispenser to stop water outlet.
In some embodiments, in extracting from the current image a water surface boundary generated based on the container forming tension with the water, processor 302 further performs: extracting a light reflection boundary formed by tension at the junction of the container and the water from the current image to obtain a circular water surface boundary; or extracting the region where the water wave features are located from the current image to obtain a plurality of discrete regions; determining circumscribed circles for a plurality of discrete regions; the circumscribed circle is set as the water surface boundary within the vessel.
In some embodiments, after determining that the container is placed below the water outlet of the water dispenser, the processor 302 further performs: when the port contour of the container is not extracted, prompt information of manual water discharging is output.
In the above embodiments, the descriptions of the embodiments have respective emphasis, and parts that are not described in detail in a certain embodiment may refer to the above detailed description of the control method of the water dispenser, and are not described herein again.
The embodiment of the application also provides a computer readable storage medium, wherein a computer program is stored in the computer readable storage medium, the computer program comprises program instructions, and a processor executes the program instructions to realize any one of the water dispenser control methods provided by the embodiment of the application. For example, the computer program is loaded by a processor and may perform the following steps:
when the container for receiving water is not arranged below the water outlet of the water dispenser, acquiring an image below the water outlet of the water dispenser to obtain a background image and acquiring an initial image below the water outlet of the water dispenser; if the difference between the initial image and the background image is larger than a first preset threshold value, determining that the container is placed below a water outlet of the water dispenser, and extracting the port outline of the container from the initial image; controlling water outlet of the water dispenser, acquiring a current image containing a container, extracting a water surface boundary generated based on tension formed between the container and the water from the current image, and comparing the current image with a background image; and when the size difference between the port outline and the water surface boundary is smaller than a preset threshold value or the current image is matched with the background image, controlling the water dispenser to stop discharging water.
The above operations can be implemented in the foregoing embodiments, and are not described in detail herein.
The computer-readable storage medium may be an internal storage unit of the water dispenser of the foregoing embodiment, for example, a hard disk or a memory of the water dispenser. The computer readable storage medium may also be an external storage device of the water dispenser, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), etc. provided on the water dispenser.
As the computer program stored in the computer-readable storage medium can execute any one of the water dispenser control methods provided in the embodiments of the present application, the beneficial effects that can be realized by any one of the water dispenser control methods provided in the embodiments of the present application can be realized, which are detailed in the foregoing embodiments and will not be described herein again.
It is to be understood that the terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of the present application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should also be understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items. It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments. While the invention has been described with reference to specific embodiments, the scope of the invention is not limited thereto, and various equivalent modifications or substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A control method of a water dispenser is characterized by comprising the following steps:
when the container for receiving water is not arranged below the water outlet of the water dispenser, acquiring an image below the water outlet of the water dispenser to obtain a background image;
collecting an initial image below a water outlet of the water dispenser;
if the difference between the initial image and the background image is larger than a first preset threshold value, determining that the container is placed below a water outlet of a water dispenser, and extracting a port outline of the container from the initial image;
controlling the water dispenser to discharge water, and collecting a current image containing the container;
extracting from the current image a water surface boundary generated based on the container forming tension with water and comparing the current image to the background image;
and when the size difference between the port outline and the water surface boundary is smaller than a preset threshold value or the current image is matched with the background image, controlling the water dispenser to stop discharging water.
2. The water dispenser control method of claim 1, wherein the acquiring an image of the water dispenser below the water outlet to obtain a background image comprises:
acquiring images below a water outlet of the water dispenser at intervals of preset time to obtain multi-frame images;
and when the difference between the multi-frame images is smaller than a second preset threshold value, selecting one image from the multi-frame images as a background image.
3. The water dispenser control method of claim 1, wherein the collecting an initial image of the water dispenser below the water outlet comprises:
and acquiring an initial image below the water outlet of the water dispenser from the upper part of the container through a camera preset around the water outlet of the water dispenser.
4. The water dispenser control method of claim 1, wherein the extracting the port profile of the container from the initial image comprises:
comparing the initial image with the background image to obtain a pixel difference;
determining a port profile of the container from the pixel differences; alternatively, the first and second electrodes may be,
and carrying out port contour recognition on the initial image through the trained recognition model to obtain the port contour of the container.
5. The water dispenser control method of claim 1, wherein the capturing a current image containing the container comprises:
when a camera preset around a water outlet of the water dispenser collects water vapor or the water outlet temperature of the water dispenser is higher than a preset temperature threshold value, a preset fan is controlled to be started, a filter preset by the camera is controlled to be heated, and/or a dust cover preset by the camera is controlled to be heated; after the fan is started, the filter plate is heated, and/or the dust cover is heated, acquiring a current image containing the container through the camera; alternatively, the first and second electrodes may be,
said acquiring a current image containing said container comprises: detecting the current light intensity of the environment where the water dispenser is located, and controlling a preset light supplement lamp to be turned on if the current light intensity is smaller than a preset intensity threshold value; and after the light supplement lamp is turned on, acquiring a current image containing the container.
6. The water dispenser control method of claim 1, wherein when the current image matches the background image, controlling the water dispenser to stop discharging water comprises:
performing pixel comparison on the current image and the background image to obtain a comparison result;
and when the container is determined to be moved away from the lower part of the water outlet of the water dispenser according to the comparison result, determining that the current image is matched with the background image, and controlling the water dispenser to stop water outlet.
7. The water dispenser control method of any one of claims 1 to 6, wherein the extracting from the current image a water surface boundary generated based on the container forming tension with water comprises:
extracting a light reflection boundary formed by tension at the junction of the container and the water from the current image to obtain a circular water surface boundary; alternatively, the first and second electrodes may be,
extracting the area where the water wave features are located from the current image to obtain a plurality of discrete areas;
determining circumscribed circles of the plurality of discrete regions;
setting the circumscribed circle as a water surface boundary within the container.
8. The water dispenser control method according to any one of claims 1 to 6, wherein after determining that the container is placed below the water outlet of the water dispenser, the water dispenser control method comprises:
and when the port contour of the container is not extracted, outputting prompt information of manual water discharging.
9. A water dispenser, characterized in that the water dispenser comprises a processor and a memory, wherein the memory stores a computer program, and the processor executes the water dispenser control method according to any one of claims 1 to 8 when calling the computer program in the memory.
10. A computer-readable storage medium for storing a computer program which is loaded by a processor to execute the water dispenser control method according to any one of claims 1 to 8.
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