CN109611915B - Self-adaptive filter screen pushing platform - Google Patents

Self-adaptive filter screen pushing platform Download PDF

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Publication number
CN109611915B
CN109611915B CN201811484059.7A CN201811484059A CN109611915B CN 109611915 B CN109611915 B CN 109611915B CN 201811484059 A CN201811484059 A CN 201811484059A CN 109611915 B CN109611915 B CN 109611915B
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definition
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CN109611915A (en
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林丽
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Chen Haiyan
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24CDOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00Details
    • F24C15/20Removing cooking fumes
    • F24C15/2035Arrangement or mounting of filters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24CDOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00Details
    • F24C15/20Removing cooking fumes
    • F24C15/2021Arrangement or mounting of control or safety systems

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Image Processing (AREA)

Abstract

The invention relates to a self-adaptive filter screen pushing platform, which comprises: the oil collecting structure comprises an oil collecting box, an oil collecting cover, support legs, an oil collecting cup, a machine shell, a rear cover, a front cover and a key switch; the smoke exhaust structure comprises an impeller, a fan blade, a motor and a smoke exhaust pipe, wherein the motor is arranged between the front cover and the rear cover, and the smoke exhaust pipe penetrates through the rear cover; the type analysis device is used for carrying out food material type analysis on the spliced images based on different imaging characteristics of different types of food materials so as to obtain each region occupied by each type of food material in the spliced images, and outputting the food material type corresponding to the region with the largest area as a main type; and the filter screen pushing equipment is connected with the type analysis equipment and used for determining the number of the filter screens pushed to the front of the impeller based on the main type. By the invention, the service life of the easily-worn part can be effectively prolonged.

Description

Self-adaptive filter screen pushing platform
Technical Field
The invention relates to the field of range hoods, in particular to a self-adaptive filter screen pushing platform.
Background
The cooker hood mainly comprises a casing, an air duct, a fan, a check valve, an oil collecting and discharging device, a lighting device, a power switch, a power line and the like.
The shell consists of a shell body and a panel, is formed by spraying plastics on the surface of a cold-rolled thin steel plate, and has the advantages of smooth appearance, attractive appearance, no rust, high durability and easy cleaning.
The motor is the core part of the range hood and adopts a totally-enclosed single-phase capacitor operation type asynchronous motor; the iron shell is totally closed, the motor bearing is a double-row ball bearing, the insulation grade is E-pole insulation, and the capacity of the starting capacitor is about 4 microfarads.
The wind wheel adopts a centrifugal wind wheel. The diameter of the steel plate is 220mm/240 mm. The aluminum alloy sheet is formed by stamping, is durable and invariant, and has good dynamic balance performance. The air duct is a flue gas passage and is formed by spraying plastic on the surface of the cold-rolled steel sheet, and the reasonability of the air duct structure determines the air exhaust amount and the noise of the whole range hood. The check valve is made of plastic and has the function of preventing the smoke from flowing backwards.
The fume extractor consists of an oil collecting box, a fume exhaust pipe, an oil collecting cup and an oil guide ring. A common Chinese style machine of the lighting device adopts a 15-40W incandescent screw bulb: the European machine and the near-suction type adopt a cold light source lamp, a detachable transparent organic glass sheet is arranged outside the European machine and the near-suction type, so that the lamp is sealed, oil smoke is prevented from contaminating and corroding the lamp during cooking, and the safety of an electric appliance is ensured.
Disclosure of Invention
In order to solve the technical problem that the intelligent level of the current range hood is low, the invention provides a self-adaptive filter screen pushing platform, wherein the image is uniformly divided based on the signal-to-noise ratio of the image, the number of edge lines in each divided sub-image is measured, the sub-images with more edge lines are only subjected to subsequent processing, the more the edge lines are, the larger the image information amount is, and the processing efficiency is improved; more importantly, in order to reduce oil contamination and loss to the impeller, fan blades, motor and smoke exhaust, the number of filter screens pushed in front of the impeller is determined based on the prevailing type of food material currently being cooked.
According to an aspect of the present invention, there is provided an adaptive filter screen pushing platform, the platform comprising:
the oil collecting structure comprises an oil collecting box, an oil collecting cover, support legs, an oil collecting cup, a machine shell, a rear cover, a front cover and a key switch; the smoke exhaust structure comprises an impeller, a fan blade, a motor and a smoke exhaust pipe, wherein the motor is arranged between the front cover and the rear cover, and the smoke exhaust pipe penetrates through the rear cover; the cup mouth of the oil collecting cup is arranged in the oil collecting box, the cup bottom of the oil collecting cup is arranged in the oil collecting cover, the support legs are connected with the machine shell, the key switch is arranged on the machine shell, the front cover is arranged in front of the machine shell, and the rear cover is arranged behind the machine shell; the vertical sensing equipment is arranged at the bottom of the oil collecting cover, comprises an upper image sensor and a lower image sensor and is used for respectively carrying out image sensing operation on the lower part of the oil collecting cover so as to respectively obtain continuous multiframe upper high-definition images on a time axis and continuous multiframe lower high-definition images on the time axis; the image sharpening device is used for receiving a current upper high-definition image frame and a current lower high-definition image frame, determining a corresponding image sharpening degree applied to the high-definition image frames for a noise amplitude based on a maximum amplitude noise type in the high-definition image frames facing to any one of the current upper high-definition image frame and the current lower high-definition image frame, and obtaining an instant sharpened image; the edge detection device is connected with the image sharpening device and used for receiving the instant sharpened image, extracting a plurality of edge pixel points from the instant sharpened image based on an edge point gray scale range, and fitting the plurality of edge pixel points to obtain a plurality of edge lines; the distribution measuring equipment is connected with the edge detection equipment and used for receiving the instant sharpened image and the plurality of edge lines, uniformly dividing the instant sharpened image based on the signal-to-noise ratio of the instant sharpened image to obtain a plurality of sub-images, measuring the number of the edge lines in each sub-image, and outputting one or more sub-images with the number of the edge lines exceeding a preset number threshold value as one or more target sub-images; the image splicing device is connected with the distribution measuring device and is used for receiving one or more target sub-images corresponding to each of a current upper high-definition image frame and a current lower high-definition image frame, splicing the one or more target sub-images corresponding to the current upper high-definition image frame and the one or more target sub-images corresponding to the current lower high-definition image frame to obtain corresponding spliced images, and sending the spliced images; the type analysis device is connected with the image splicing device and used for carrying out food material type analysis on the spliced images based on different imaging characteristics of different types of food materials so as to obtain each area occupied by the various types of food materials in the spliced images, and outputting the food material type corresponding to the area with the largest area as a main type; and the filter screen pushing equipment is connected with the type analysis equipment and used for determining the number of the filter screens pushed to the front of the impeller based on the main type.
More specifically, in the adaptive filter screen pushing platform: the image splicing device consists of a data receiving sub-device, a sub-image splicing sub-device and a data sending sub-device; and the sub-image splicing sub-device is respectively connected with the data receiving sub-device and the data sending sub-device.
Detailed Description
Embodiments of the adaptive filter screen pushing platform of the present invention will be described in detail below.
The range hood is installed on the upper portion of a stove, a power supply of the range hood is connected, the driving motor enables the wind wheel to rotate at a high speed, a negative pressure area is formed in a certain space range above the stove, indoor oil fume is sucked into the range hood, the oil fume is filtered through the oil screen to be separated for the first time, then the oil fume enters the air channel of the range hood, the oil fume is separated for the second time through rotation of the impeller, oil fume in the air cabinet is acted by centrifugal force, oil mist is condensed into oil drops, an oil cup is collected through an oil way, and purified smoke is discharged along a fixed passage at last.
In order to overcome the defects, the invention builds a self-adaptive filter screen pushing platform, and can effectively solve the corresponding technical problem.
The self-adaptive filter screen pushing platform shown according to the embodiment of the invention comprises:
the oil collecting structure comprises an oil collecting box, an oil collecting cover, support legs, an oil collecting cup, a machine shell, a rear cover, a front cover and a key switch;
the smoke exhaust structure comprises an impeller, a fan blade, a motor and a smoke exhaust pipe, wherein the motor is arranged between the front cover and the rear cover, and the smoke exhaust pipe penetrates through the rear cover;
the cup mouth of the oil collecting cup is arranged in the oil collecting box, the cup bottom of the oil collecting cup is arranged in the oil collecting cover, the support legs are connected with the machine shell, the key switch is arranged on the machine shell, the front cover is arranged in front of the machine shell, and the rear cover is arranged behind the machine shell;
the vertical sensing equipment is arranged at the bottom of the oil collecting cover, comprises an upper image sensor and a lower image sensor and is used for respectively carrying out image sensing operation on the lower part of the oil collecting cover so as to respectively obtain continuous multiframe upper high-definition images on a time axis and continuous multiframe lower high-definition images on the time axis;
the image sharpening device is used for receiving a current upper high-definition image frame and a current lower high-definition image frame, determining a corresponding image sharpening degree applied to the high-definition image frames for a noise amplitude based on a maximum amplitude noise type in the high-definition image frames facing to any one of the current upper high-definition image frame and the current lower high-definition image frame, and obtaining an instant sharpened image;
the edge detection device is connected with the image sharpening device and used for receiving the instant sharpened image, extracting a plurality of edge pixel points from the instant sharpened image based on an edge point gray scale range, and fitting the plurality of edge pixel points to obtain a plurality of edge lines;
the distribution measuring equipment is connected with the edge detection equipment and used for receiving the instant sharpened image and the plurality of edge lines, uniformly dividing the instant sharpened image based on the signal-to-noise ratio of the instant sharpened image to obtain a plurality of sub-images, measuring the number of the edge lines in each sub-image, and outputting one or more sub-images with the number of the edge lines exceeding a preset number threshold value as one or more target sub-images;
the image splicing device is connected with the distribution measuring device and is used for receiving one or more target sub-images corresponding to each of a current upper high-definition image frame and a current lower high-definition image frame, splicing the one or more target sub-images corresponding to the current upper high-definition image frame and the one or more target sub-images corresponding to the current lower high-definition image frame to obtain corresponding spliced images, and sending the spliced images;
the type analysis device is connected with the image splicing device and used for carrying out food material type analysis on the spliced images based on different imaging characteristics of different types of food materials so as to obtain each area occupied by the various types of food materials in the spliced images, and outputting the food material type corresponding to the area with the largest area as a main type;
and the filter screen pushing equipment is connected with the type analysis equipment and used for determining the number of the filter screens pushed to the front of the impeller based on the main type.
Next, the specific structure of the adaptive filter screen pushing platform of the present invention will be further described.
In the adaptive filter screen pushing platform: the image splicing device consists of a data receiving sub-device, a sub-image splicing sub-device and a data sending sub-device;
and the sub-image splicing sub-device is respectively connected with the data receiving sub-device and the data sending sub-device.
In the adaptive filter screen pushing platform: in the image splicing device, the data receiving sub-device is configured to receive one or more target sub-images corresponding to each of a current upper high-definition image frame and a current lower high-definition image frame, and the data sending sub-device is configured to send the spliced image;
in the image stitching device, the sub-image stitching sub-device is configured to stitch one or more target sub-images corresponding to a current upper high-definition image frame with one or more target sub-images corresponding to a current lower high-definition image frame to obtain corresponding stitched images.
In the adaptive filter screen pushing platform: in the edge detection device, extracting a plurality of edge pixel points from the instant sharpened image based on an edge point gray scale range includes: determining whether the gray value of each pixel point in the instant sharpened image falls within the gray range of the edge point, determining the pixel point as an edge pixel point when the gray value of each pixel point falls within the gray range of the edge point, and otherwise, determining the pixel point as a non-edge pixel point;
wherein, in the edge detection device, the edge point gray scale range is composed of an edge point upper limit gray scale threshold and an edge point lower limit gray scale threshold.
In the adaptive filter screen pushing platform: a first processing device and a second processing device are further included between the vertical sensing device and the image sharpening device;
the first processing device is used for acquiring a current upper high-definition image frame, and comparing the current upper high-definition image frame with a historical upper high-definition image frame received recently before to obtain an image shaking average value corresponding to the current upper high-definition image frame.
In the adaptive filter screen pushing platform: the second processing device is connected with the first processing device and is used for determining the number of image areas for averagely dividing the current upper high-definition image frame based on the image jitter average value when the received image jitter average value is greater than or equal to a preset jitter threshold value, the higher the image jitter average value is, the more the number of the image areas for averagely dividing the current upper high-definition image frame is, the image areas are respectively subjected to adaptive recursive filtering processing operation based on the image areas to obtain each filtering area, the smaller the image area contrast is, the greater the adaptive recursive filtering processing operation strength is performed on the image areas, and the filtering areas are combined to obtain an upper area combined image.
In the adaptive filter screen pushing platform: the second processing device is further used for performing self-adaptive recursive filtering processing on the whole current upper high-definition image frame to obtain a corresponding upper region merged image when the jitter average value of the received image is smaller than a preset jitter threshold value;
the first processing device and the second processing device further perform the same processing on the current lower high-definition image frame as the current upper high-definition image frame to obtain a corresponding lower region merged image;
and the second processing device replaces the current upper high-definition image frame with the upper region merged image and sends the current upper high-definition image frame with the lower region merged image to the image sharpening device.
In the adaptive filter screen pushing platform: the optical fiber communication interface is connected with the second processing equipment and is used for receiving the upper area merged image and the lower area merged image and sending the upper area merged image and the lower area merged image;
the first processing equipment and the second processing equipment are respectively realized by ASIC chips with different models;
wherein the first processing device and the second processing device are connected to the same clock generation device.
In addition, the optical fiber is a short term for optical fiber, and is a fiber made of glass or plastic, which can be used as a light transmission means. The principle of transmission is 'total reflection of light'. The fine optical fiber is enclosed in a plastic sheath so that it can be bent without breaking. Generally, a Light Emitting Diode (LED) or a laser beam is used as a transmitter at one end of the optical fiber to transmit an optical pulse to the optical fiber, and a photosensor is used as a receiver at the other end of the optical fiber to detect the pulse.
In the multimode optical fiber, the core diameter is 50 μm and 62.5 μm, which are approximately equivalent to the thickness of human hair. Whereas the diameter of the single-mode optical fiber core is 8 μm to 10 μm, 9/125 μm is generally used. The core is surrounded by a glass envelope, commonly referred to as a cladding, of lower refractive index than the core, which keeps the light rays within the core. Further on the outside is a thin plastic outer jacket, i.e. a coating, for protecting the cladding. The optical fibers are typically bundled and protected by an outer jacket. The core is usually a double-walled concentric cylinder of silica glass with a small cross-sectional area, which is brittle and easily broken, and therefore requires the addition of a protective layer.
By adopting the self-adaptive filter screen pushing platform, aiming at the technical problem of low intelligent level of the range hood in the prior art, the image is uniformly divided based on the signal-to-noise ratio of the image, the number of edge lines in each divided sub-image is measured, the sub-images with more edge lines are only subjected to subsequent processing, the more the edge lines are, the larger the image information amount is, and the processing efficiency is improved; more importantly, in order to reduce oil pollution and loss to the impeller, the fan blades, the motor and the smoke exhaust pipe, the number of the filter screens pushed to the front of the impeller is determined based on the main types of the current cooking food materials; thereby solving the technical problem.
It is to be understood that while the present invention has been described in conjunction with the preferred embodiments thereof, it is not intended to limit the invention to those embodiments. It will be apparent to those skilled in the art from this disclosure that many changes and modifications can be made, or equivalents modified, in the embodiments of the invention without departing from the scope of the invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.

Claims (1)

1. An adaptive filter screen pushing platform, the platform comprising:
the oil collecting structure comprises an oil collecting box, an oil collecting cover, support legs, an oil collecting cup, a machine shell, a rear cover, a front cover and a key switch;
the smoke exhaust structure comprises an impeller, a fan blade, a motor and a smoke exhaust pipe, wherein the motor is arranged between the front cover and the rear cover, and the smoke exhaust pipe penetrates through the rear cover;
the cup mouth of the oil collecting cup is arranged in the oil collecting box, the cup bottom of the oil collecting cup is arranged in the oil collecting cover, the support legs are connected with the machine shell, the key switch is arranged on the machine shell, the front cover is arranged in front of the machine shell, and the rear cover is arranged behind the machine shell;
the vertical sensing equipment is arranged at the bottom of the oil collecting cover, comprises an upper image sensor and a lower image sensor and is used for respectively carrying out image sensing operation on the upper part and the lower part of the oil collecting cover so as to respectively obtain continuous multiframe upper high-definition images on a time axis and continuous multiframe lower high-definition images on the time axis;
the image sharpening device is used for receiving a current upper high-definition image frame and a current lower high-definition image frame, determining a corresponding image sharpening degree applied to the high-definition image frames for a noise amplitude based on a maximum amplitude noise type in the high-definition image frames facing to any one of the current upper high-definition image frame and the current lower high-definition image frame, and obtaining an instant sharpened image;
the edge detection device is connected with the image sharpening device and used for receiving the instant sharpened image, extracting a plurality of edge pixel points from the instant sharpened image based on an edge point gray scale range, and fitting the plurality of edge pixel points to obtain a plurality of edge lines;
the distribution measuring equipment is connected with the edge detection equipment and used for receiving the instant sharpened image and the plurality of edge lines, uniformly dividing the instant sharpened image based on the signal-to-noise ratio of the instant sharpened image to obtain a plurality of sub-images, measuring the number of the edge lines in each sub-image, and outputting one or more sub-images with the number of the edge lines exceeding a preset number threshold value as one or more target sub-images;
the image splicing device is connected with the distribution measuring device and is used for receiving one or more target sub-images corresponding to each of a current upper high-definition image frame and a current lower high-definition image frame, splicing the one or more target sub-images corresponding to the current upper high-definition image frame and the one or more target sub-images corresponding to the current lower high-definition image frame to obtain corresponding spliced images, and sending the spliced images;
the type analysis device is connected with the image splicing device and used for carrying out food material type analysis on the spliced images based on different imaging characteristics of different types of food materials so as to obtain each area occupied by the various types of food materials in the spliced images, and outputting the food material type corresponding to the area with the largest area as a main type;
the filter screen pushing equipment is connected with the type analysis equipment and used for determining the number of filter screens pushed to the front of the impeller based on the main type;
the image splicing device consists of a data receiving sub-device, a sub-image splicing sub-device and a data sending sub-device;
the sub-image splicing sub-equipment is respectively connected with the data receiving sub-equipment and the data sending sub-equipment;
in the image splicing device, the data receiving sub-device is configured to receive one or more target sub-images corresponding to each of a current upper high-definition image frame and a current lower high-definition image frame, and the data sending sub-device is configured to send the spliced image;
in the image splicing device, the sub-image splicing sub-device is used for splicing one or more target sub-images corresponding to a current upper high-definition image frame with one or more target sub-images corresponding to a current lower high-definition image frame to obtain corresponding spliced images;
in the edge detection device, extracting a plurality of edge pixel points from the instant sharpened image based on an edge point gray scale range includes: determining whether the gray value of each pixel point in the instant sharpened image falls within the gray range of the edge point, determining the pixel point as an edge pixel point when the gray value of each pixel point falls within the gray range of the edge point, and otherwise, determining the pixel point as a non-edge pixel point;
in the edge detection device, the edge point gray scale range is composed of an edge point upper limit gray scale threshold and an edge point lower limit gray scale threshold;
a first processing device and a second processing device are further included between the vertical sensing device and the image sharpening device;
the first processing device is used for acquiring a current upper high-definition image frame, and comparing the current upper high-definition image frame with a historical upper high-definition image frame received recently before to acquire an image shaking average value corresponding to the current upper high-definition image frame;
the second processing device is connected with the first processing device and is used for determining the number of image areas for averagely dividing the current upper high-definition image frame based on the image jitter average value when the received image jitter average value is greater than or equal to a preset jitter threshold value, wherein the higher the image jitter average value is, the more the number of the image areas for averagely dividing the current upper high-definition image frame is, the image areas are respectively subjected to adaptive recursive filtering processing operation based on the image areas to obtain each filtering area, the smaller the image area contrast is, the greater the adaptive recursive filtering processing operation strength is performed on the image areas, and the filtering areas are combined to obtain an upper area combined image;
the second processing device is further used for performing self-adaptive recursive filtering processing on the whole current upper high-definition image frame to obtain a corresponding upper region merged image when the jitter average value of the received image is smaller than a preset jitter threshold value;
the first processing device and the second processing device further perform the same processing on the current lower high-definition image frame as the current upper high-definition image frame to obtain a corresponding lower region merged image;
the second processing device replaces the current upper high-definition image frame with the upper region merged image and sends the current upper high-definition image frame to the image sharpening device, and replaces the current lower high-definition image frame with the lower region merged image and sends the current lower high-definition image frame to the image sharpening device;
the optical fiber communication interface is connected with the second processing equipment and is used for receiving the upper area merged image and the lower area merged image and sending the upper area merged image and the lower area merged image;
the first processing equipment and the second processing equipment are respectively realized by ASIC chips with different models;
wherein the first processing device and the second processing device are connected to the same clock generation device.
CN201811484059.7A 2018-12-06 2018-12-06 Self-adaptive filter screen pushing platform Active CN109611915B (en)

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