CN116107136A - A lens antifouling device and method for collecting dust particle images - Google Patents

Abstract

The invention discloses a lens antifouling device and method for collecting dust particle images, and belongs to the field of particle image recognition. By setting the upper surface of the dust-proof housing as an inverted funnel-shaped structure, and then installing a dust-proof air curtain on the inverted funnel-shaped structure, the dust particle mixture can be easily introduced into the center of the dust-proof housing; combined with the positive funnel-shaped structure, the dust The particle mixture is introduced into the discharge port to prevent dust particles from entering the lighting port. Therefore, the anti-fouling device sets the upper surface and the lower bottom of the dust-proof housing as a special shape structure, and installs a dust-proof air curtain on the inverted funnel-shaped structure, which can ensure that the lens of the camera is not polluted when collecting images of dust particles. The image of dust particles collected is clearer. Two circular structures are formed by several first-level dust-proof air curtains and several second-level dust-proof air curtains, so that dust can be cleaned more thoroughly. Adjustable nozzles are installed under the first-level dust-proof air curtain and the second-level dust-proof air curtain, and the blowing angle can be adjusted according to needs.

Description

A lens antifouling device and method for collecting dust particle images

technical field

The invention belongs to the technical field of particle image recognition, and relates to a lens antifouling device and method for collecting dust particle images.

Background technique

As a non-contact measurement method, image recognition technology is regarded as a reliable online monitoring technology, which can monitor the shape and motion state of the observed target and obtain its data parameters in real time, and has been maturely used in some fields. For dynamic particle image recognition, this technology has not been widely used due to the problem of lens pollution. Taking the online monitoring of coal particles in coal-fired power stations as an example, due to the disorder of the two-phase flow of wind and powder in the monitoring section, the coal particles are easily contaminated Dirty mirrors make it impossible for the online monitoring system to accurately obtain data such as coal fineness.

At present, dynamic dust particle image recognition technology is still in the research and development stage, and solving the problem of lens antifouling is of great significance for the industrial application of dynamic dust particle image recognition technology. However, the existing dust removal device cannot clean up the pollutants in the camera lens, resulting in unclear collected images, making it impossible for image recognition equipment to accurately obtain data such as coal fineness.

Contents of the invention

The purpose of the present invention is to solve the problem in the prior art that the camera lens is easily polluted by dust particles when collecting dust particle images, but the existing dust removal device cannot clean up the pollutants of the camera lens, resulting in unclear collected images, providing A lens antifouling device and method for collecting dust particle images.

In order to achieve the above object, the present invention adopts the following technical solutions to achieve:

A lens antifouling device for collecting images of dust particles proposed by the present invention includes a dustproof casing;

The upper surface of the dust-proof casing is an inverted funnel-shaped structure, and the lower bottom surface of the dust-proof casing is a positive funnel-shaped structure; a feed inlet is opened at the center of the inverted funnel-shaped structure, and the positive funnel-shaped structure A discharge port is opened in the center of the structure; a dust-proof air curtain for blocking dust particles is installed on the inverted funnel-shaped structure; lighting ports are symmetrically opened on both sides of the dust-proof casing.

Preferably, dust-proof plexiglass sheets are installed on the two lighting openings.

Preferably, the upper surface of the dustproof casing is provided with two lens sweeping nozzles for cleaning the dust on the dustproof plexiglass sheet, and the two lens sweeping nozzles are arranged symmetrically;

A pipeline is installed in the lens sweeping nozzle, one end of the pipeline is located outside the dustproof casing, and the other end of the pipeline is arranged against the dustproof plexiglass sheet.

Preferably, the dust-proof air curtain includes a first-level dust-proof air curtain and a second-level dust-proof air curtain; each of the first-level dust-proof air curtain and the second-level dust-proof air curtain is several;

Several primary dust-proof air curtains are arranged around the feed inlet to form a first circular structure, and several secondary dust-proof air curtains are arranged around the feed inlet to form a second circular structure, and the first circular structure and the second circular structure The type structure is installed in steps.

Preferably, first adjustable nozzles are installed below the primary dust-proof air curtains.

Preferably, second adjustable nozzles are installed below the secondary dustproof air curtains.

Preferably, several primary dust-proof air curtains and several secondary dust-proof air curtains are arranged at equal intervals.

Preferably, the opening of the inverted funnel-shaped structure is larger than the opening of the positive funnel-shaped structure.

Preferably, an illuminating lamp is installed at any daylight opening.

An antifouling method of a lens antifouling device for collecting dust particle images proposed by the present invention comprises the following steps:

Introduce the mixture of dust particles from the feed port into the interior of the dustproof enclosure;

The dust-proof air curtain gathers the mixture of dust particles in the center of the dust-proof enclosure;

The camera collects dust particle images at any lighting port, and the dust particle mixture is exported from the discharge port.

Compared with the prior art, the present invention has the following beneficial effects:

A lens antifouling device for collecting dust particle images proposed by the present invention, by setting the upper surface of the dustproof casing as an inverted funnel-shaped structure, and then installing a dust-proof air curtain on the inverted funnel-shaped structure, it can easily mix the dust particles Introduced into the center of the dust-proof housing; combined with the positive funnel-shaped structure, the mixture of dust particles can be introduced into the discharge port, preventing dust particles from entering the lighting port. Therefore, the anti-fouling device proposed by the present invention sets the upper surface and the lower bottom surface of the dust-proof housing as a special shape structure, and installs a dust-proof air curtain on the inverted funnel-shaped structure, which can ensure that the lens does not catch the dust particle image when the camera is collected. Contaminated, the image of dust particles collected is clearer.

Furthermore, a dust-proof plexiglass sheet is installed at the daylight opening to prevent the residual dust after cleaning the dust-proof air curtain from adhering to the camera lens through the daylight opening, thereby polluting the lens.

Further, installing two lens sweeping nozzles and installing pipes in the lens sweeping nozzles, on the one hand, can sweep away a very small number of dust particles that break through the dust-proof air curtain, making the collected images clearer and more accurate in identification. On the one hand, a positive pressure atmosphere can be formed in the local area behind the dust-proof air curtain, further suppressing the diffusion of dust in the dust-proof enclosure.

Furthermore, by installing several primary dust-proof air curtains and several secondary dust-proof air curtains and forming two circular structures, the dust can be cleaned more thoroughly.

Further, adjustable nozzles are installed under the first-level dust-proof air curtain and the second-level dust-proof air curtain, and the blowing angle can be adjusted as required.

Further, lighting lamps are installed at any daylighting opening, so as to be suitable for any time period.

The invention proposes an antifouling method for a lens antifouling device that collects dust particle images. The main dustproof air curtain gathers the mixture of dust particles in the center of the dustproof casing, and combined with the special structure of the dustproof casing, it is convenient for the camera to be used anywhere. An image of dust particles is collected at a lighting port, so as to realize the cleaning of pollutants in the camera lens.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

FIG. 1 is a structural diagram of a lens antifouling device for collecting dust particle images according to the present invention.

Among them: 1-dust-proof plexiglass sheet, 2-lens sweeping nozzle, 3-dust-proof shell, 4-first-level dust-proof air curtain, 5-second-level dust-proof air curtain, 6-feed inlet, 7-the first One adjustable nozzle, 8-outlet, 9-pipe, 10-second adjustable nozzle, 11-lighting lamp, 12-camera, 13-compressed air, 14-dust particle mixture.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "horizontal", "inside" etc. is based on the orientation or positional relationship shown in the drawings , or the orientation or positional relationship that the product of the invention is usually placed in use is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed in a specific orientation and operation, and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

In addition, when the term "horizontal" appears, it does not mean that the part is required to be absolutely horizontal, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", and it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the description of the embodiments of the present invention, it should also be noted that, unless otherwise specified and limited, the terms "setting", "installation", "connection" and "connection" should be interpreted in a broad sense, for example, It can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

The present invention is described in further detail below in conjunction with accompanying drawing:

A lens antifouling device for collecting dust particle images proposed by the present invention, as shown in Figure 1, the upper surface of the dustproof casing 3 is an inverted funnel-shaped structure, the lower bottom surface of the dustproof casing 3 is a positive funnel-shaped structure, and the inverted funnel The opening of the funnel-shaped structure is larger than the opening of the funnel-shaped structure. A feed inlet 6 is opened in the center of the inverted funnel-shaped structure, and a discharge outlet 8 is opened in the center of the positive funnel-shaped structure; a dust-proof air curtain for blocking dust particles is installed on the inverted funnel-shaped structure; Both sides of the housing 3 are symmetrically provided with lighting ports, which is convenient for the camera 12 to collect images of dust particles at any lighting port. Illumination lamp 11 is installed at any daylighting opening, and purpose is to make dust-proof shell be applicable to any lighting condition.

Wherein, the dust-proof air curtain includes a first-level dust-proof air curtain 4 and a second-level dust-proof air curtain 5 , and there are several first-level dust-proof air curtains 4 and second-level dust-proof air curtains 5 . Several primary dust-proof air curtains 4 are arranged around the feed inlet 6 to form a first circular structure, and several secondary dust-proof air curtains 5 are arranged around the feed inlet 6 to form a second circular structure, and the first circular structure It is installed stepwise with the second circular structure, which can fully isolate the dust in the center of the dustproof casing 3 . The first adjustable spout 7 is installed under the first-level dust-proof air curtain 4, and the second adjustable spout 10 is installed under the secondary dust-proof air curtain 5, all in order to obtain air curtains of different angles, Meet different experimental needs. Several first-level dust-proof air curtains 4 and several second-level dust-proof air curtains 5 are arranged at equal intervals. When the compressed air 13 passes through the first-level dust-proof air curtains 4 and the second-level dust-proof air curtains 5, the strength of dust isolation is the same , improve the dust removal efficiency.

Dust-proof plexiglass sheet 1 is all installed on two daylighting ports, in order to avoid the residual dust after the dust-proof air curtain cleaning is attached on the eyeglass of camera 12 by daylighting port, thereby pollutes the lens of camera 12. The upper surface of the dustproof casing 3 is provided with two eyeglass sweeping spouts 2 for cleaning dust on the dustproof plexiglass sheet 1, and the two eyeglass sweeping spouts 2 are arranged symmetrically; A pipeline 9, one end of the pipeline 9 is located outside the dustproof casing 3, and the other end of the pipeline 9 is arranged against the dustproof plexiglass sheet 1. On the one hand, it can blow away a very small number of dust particles that break through the dust-proof air curtain, so that the collected images are clearer, and the identification is more accurate; Diffusion of dust enclosure 3.

An antifouling method of a lens antifouling device for collecting dust particle images proposed by the present invention comprises the following steps:

The dust particle mixture 14 is introduced into the inside of the dustproof housing 3 from the feed port 6;

The dustproof air curtain gathers the dust particle mixture 14 in the center of the dustproof housing 3;

The camera 12 collects an image of dust particles at any lighting port, and the dust particle mixture 14 is exported from the discharge port 8 .

The specific working principle and working process of a lens antifouling device for collecting dust particle images proposed by the present invention are as follows: the dust particle mixture 14 flows through the feed port 6 and then enters the dustproof housing 3 , and finally flows out from the discharge port 8 . The dust-proof plexiglass sheets 1 arranged on both sides of the dust-proof housing 3 can prevent dust from directly polluting the camera 12 and the lighting lamp 11 .

Specifically: the present invention designs a special-shaped dustproof casing 3, and the top of the dustproof casing 3 is designed as a plane with a certain slope (that is, an inverted funnel-shaped structure), and a plurality of first dustproof air curtains are arranged step by step on this plane 4 and a plurality of second dust-proof air curtains 5, the bottom is designed as a plane with a large slope (i.e., a positive funnel-shaped structure), and the two planes form a converging duct. When part of the dust particle mixture 14 diffuses and hits the wall, the converging duct Most of the wind powder is affected by inertia and flows along the slope plane to the discharge port 8; a plurality of first dust-proof air curtains 4 and a plurality of second dust-proof air curtains 5 are arranged in steps on the top of the dustproof casing 3 to prevent The wind source of the dust air curtain comes from the compressed air 13. After entering the air chamber, it passes through the first adjustable nozzle 7 and the second adjustable nozzle 10 (the airflow direction of the air curtain can be adjusted, and it can be adjusted according to the mixed flow state of different wind powder. ), forming a high-speed and high-pressure multi-channel air curtain to isolate the converging flow of wind powder and the dust-proof plexiglass sheet 1, so as to achieve the effect of dust-proof lens. The lens sweeping air nozzle 2 is arranged near the dust-proof plexiglass sheet 1. On the one hand, the lens sweeping wind can blow away a very small number of dust particles that break through the air curtain, making image recognition more accurate. On the other hand, the lens sweeping air nozzle 1 blows The sweeping arrangement can form a positive pressure atmosphere in the local area behind the dust-proof air curtain, further suppressing the diffusion of the wind-powder mixed flow in the dust-proof casing 3 .

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A lens antifouling device for collecting dust particle images, characterized in that it comprises a dustproof housing (3); The upper surface of the dust-proof casing (3) is an inverted funnel-shaped structure, and the lower bottom surface of the dust-proof casing (3) is a positive funnel-shaped structure; a feed inlet (6) is provided at the center of the inverted funnel-shaped structure ), the center of the positive funnel-shaped structure is provided with a discharge port (8); a dust-proof air curtain for blocking dust particles is installed on the inverted funnel-shaped structure; in the dust-proof housing (3) There are lighting openings on both sides symmetrically. 2. The lens antifouling device for collecting dust particle images according to claim 1, characterized in that, dust-proof plexiglass sheets (1) are installed on the two lighting ports. 3. the lens antifouling device of gathering dust particle image according to claim 2, is characterized in that, the upper surface of described dustproof case (3) offers two for cleaning described dustproof plexiglass sheet (1 ) on the lens sweeping nozzle (2) of dust, two described lens sweeping nozzles (2) are arranged symmetrically; A pipeline (9) is installed in the lens sweeping nozzle (2), one end of the pipeline (9) is located outside the dustproof casing (3), and the other end of the pipeline (9) faces the dustproof plexiglass slice (1) set. 4. The lens antifouling device for collecting dust particle images according to claim 1, wherein the dustproof air curtain comprises a primary dustproof air curtain (4) and a secondary dustproof air curtain (5); There are several first-level dust-proof air curtains (4) and the second-level dust-proof air curtains (5); Several primary dust-proof air curtains (4) are arranged around the feed inlet (6) to form a first circular structure, and several secondary dust-proof air curtains (5) are arranged around the feed inlet (6) to form a second circular structure structure, and the first circular structure and the second circular structure are installed in steps. 5. The lens antifouling device for collecting dust particle images according to claim 4, characterized in that a first adjustable nozzle (7) is installed under the primary dustproof air curtain (4). 6 . The lens antifouling device for collecting dust particle images according to claim 4 , characterized in that, a second adjustable nozzle ( 10 ) is installed under the secondary dustproof air curtain ( 5 ). 7. The lens antifouling device for collecting dust particle images according to claim 4, characterized in that several primary dust-proof air curtains (4) and several secondary dust-proof air curtains (5) are arranged at equal intervals. 8 . The lens antifouling device for collecting dust particle images according to claim 1 , wherein the opening of the inverted funnel-shaped structure is larger than the opening of the positive funnel-shaped structure. 9. The lens antifouling device for collecting dust particle images according to claim 1, characterized in that an illuminating lamp (11) is installed at any daylight opening. 10. The antifouling method using the lens antifouling device for collecting dust particle images described in any one of claims 1 to 9, is characterized in that, comprising the steps of: The dust particle mixture (14) is introduced into the inside of the dustproof housing (3) from the feed port (6); The dustproof air curtain gathers the dust particle mixture (14) in the center of the dustproof housing (3); The camera (12) collects an image of dust particles at any lighting port, and the dust particle mixture (14) is exported from the discharge port (8).

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