CN111929968A - Spraying feature extraction device and method based on sheet light - Google Patents
Spraying feature extraction device and method based on sheet light Download PDFInfo
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- CN111929968A CN111929968A CN202010704962.0A CN202010704962A CN111929968A CN 111929968 A CN111929968 A CN 111929968A CN 202010704962 A CN202010704962 A CN 202010704962A CN 111929968 A CN111929968 A CN 111929968A
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- lens
- retractable
- light
- spray
- spraying
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
- G03B15/03—Combinations of cameras with lighting apparatus; Flash units
- G03B15/05—Combinations of cameras with electronic flash apparatus; Electronic flash units
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/08—Trick photography
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/02—Bodies
- G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
Abstract
The invention relates to a device and a method for extracting spray characteristics based on a sheet light, wherein the device comprises a sheet light system and an acquisition system. The light sheet part comprises a base, a laser support, laser, a lens and a lens support. The acquisition system is a camera. Wherein the spray and the sheet light are perpendicular to each other, and the camera is just collecting the spray. The laser forms a sheet of light through a lens, after which the spray is cut. There will be light at the cut surface, where the spray and laser intersect. And photographing by using a camera to acquire the shape of the cross section of the spray at different distances. The invention also provides a spraying feature extraction method based on the sheet light, which is used for extracting the spraying features on the premise of not interfering the normal spraying of the spraying, and the scheme can be transferred to other related fields.
Description
Technical Field
The invention relates to the technical field of laser diagnosis and spraying, in particular to a device and a method for extracting spraying characteristics based on a sheet light.
Background
Nebulisation has become an international field of research. Because of its wide application range, it can be applied to spray combustion, cleaning sensors, cleaning glass, spraying from rocket spraying, automobile spraying to spraying in home life, and the application range of the spraying is far beyond the imagination of people.
The spray characteristics are divided into micro and macro. The microscopic level includes the spray particle size, etc., and the macroscopic level includes the cross-sectional area of the spray, etc. Wherein the characteristics of the spraying area of macroscopic characteristics and the like are important characteristics of the spraying. As in the cleaning field, the larger the cross-sectional area of the spray at the same spray pressure, the wider the cleaning range.
Laser diagnosis is widely used because it does not interfere with the normal course of the object being diagnosed. The invention is therefore of practical application in conjunction with laser diagnostics in spray technology.
Disclosure of Invention
The present invention is directed to a device and a method for extracting spray characteristics based on a sheet light, which overcome the above-mentioned drawbacks of the prior art.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a spraying characteristic extraction element based on piece light, the device include with the perpendicular piece light system part that sets up of spraying direction looks and with the collection system part that the spraying direction just right set up, piece light system part is including the base, be equipped with laser instrument support and circular lens support on the base, be equipped with the laser instrument on the laser instrument support, be equipped with lens on the circular lens support, collection system part includes the camera.
Further, the height of the laser and the height of the lens relative to the base are the same.
Further, circular lens support on be equipped with the retractable spiral cover, lens set up in on the retractable spiral cover, lens pass through the retractable spiral cover set up in on the circular lens support.
Further, the surface shape of the retractable screw cap is circular.
Furthermore, the retractable screw cap is also provided with a retractable screw cap control rod for controlling the retractable screw cap to extend and retract.
Furthermore, the telescopic screw cap is made of phenolic plastics.
Further, the surface shape of the lens is circular.
Furthermore, the lens is a straight lens.
The invention also provides a spray characteristic extraction method adopting the spray characteristic extraction device based on the sheet light, which comprises the following steps:
step 1: adjusting and fixing the lens through a retractable screw cap arranged on the circular lens bracket and a retractable screw cap control rod arranged on the retractable screw cap, and opening the laser to form surface light through the lens;
step 2: adjusting the direction of the surface light and the spraying direction to be mutually perpendicular, adjusting the direction of the camera to be over against the spraying direction, and then forming a light pattern at the intersection of the surface light and the spraying direction;
and step 3: shooting the light pattern by using the camera to obtain a cross-sectional area pattern of the spray at a corresponding distance;
and 4, step 4: moving the camera to adjust the distance of the camera relative to the light pattern, and repeatedly shooting to obtain cross-sectional area patterns of the sprays at different distances;
and 5: and splicing the cross-sectional area graphs of the sprays at all different distances to obtain a three-dimensional image of the spray jet, and further finally obtaining the spray characteristics based on the three-dimensional image.
Further, step 1 is through set up in retractable spiral cover on the circular lens support and set up in retractable spiral cover control lever on the retractable spiral cover is with the regulation fixed the process of lens specifically includes: firstly, clockwise rotating the telescopic screwing cover control rod to enable the telescopic screwing cover to extend outwards and extend to the position with the maximum telescopic distance, then arranging the lens at the central position of the telescopic screwing cover, anticlockwise rotating the telescopic screwing cover control rod to enable the telescopic screwing cover to retract, and stopping rotating when the lens can be fixed in the retracting process of the telescopic screwing cover.
Compared with the prior art, the invention has the following advantages:
(1) the device comprises two parts, namely a sheet light part and a collection part. The laser part comprises a base and a laser support connected with the base, and the laser support is used for placing a laser. A lens holder coupled to the base. The lens support is used for fixing the lens and the laser to be kept at the same height, the light sheet system is perpendicular to the spraying direction, the camera of the collecting system is right opposite to the spraying direction, images are convenient to collect, the laser emits a light source, surface light is formed through refraction of the lens through the lens, spraying is carried out, the crossed part of the spraying part and the surface light part presents light, the light pattern is shot, the characteristic of spraying at the distance is obtained, and the light pattern of the cross section area of spraying at any distance can be obtained on the premise that the normal spraying process is not interfered.
(2) The circular lens support in the device comprises an upper part and a lower part, wherein the lower part is a support, and the upper part is a circular telescopic screw cover. And has a control lever for control. The control rod is rotated anticlockwise, the telescopic screw cap is retracted inwards, and the control rod is rotated clockwise, and the telescopic screw cap is extended outwards. The telescopic screw cap is important to place the lens, the lens is fixed through the control rod, and the device is provided with the lens fixing device and solves the problems that the lens is difficult to fix and the like.
(3) The retractable spiral cover in the device is made of phenolic plastics, so that the lens is not damaged while the lens is fixed, the phenolic plastics is adopted, the collection system can be shot from other angles without being limited to spraying, and other characteristics of spraying are obtained.
Drawings
FIG. 1 is an overall structure diagram of a sheet light-based spray feature extraction device according to the present invention;
FIG. 2 is a partial block diagram of a circular lens holder portion of the sheet light based spray signature extraction apparatus of the present invention;
in the figure, 1 is a sheet light system, 2 is an acquisition system, 3 is a base, 4 is a laser support, 5 is a laser, 6 is a lens, 7 is a circular lens support, 8 is a camera, 9 is a retractable screw cap, and 10 is a retractable screw cap control rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The invention relates to a spraying feature extraction device based on a sheet light, which has a structure shown in figure 1 and comprises a sheet light system 1 and an acquisition system 2. The sheet light system comprises a base 3, a laser support 4, a laser 5, a lens 6 and a circular lens support 7, and the acquisition system 2 comprises a camera 8.
Wherein a detailed schematic view of the circular lens holder 7 is shown in figure 2. The circular lens support 7 comprises two parts, wherein the lower part is the circular lens support 7, the upper part is a retractable screw cover 9, a retractable screw cover control rod 10 for controlling the retractable screw cover 9, and the lens 6. Wherein the control rod is rotated anticlockwise, the telescopic screw cap is retracted inwards, and the control rod is rotated clockwise, and the telescopic screw cap is extended outwards.
The lens 6 used in this embodiment is a linear lens, which can effectively refract light into a surface light source.
In this embodiment, the retractable cover control rod 10 is first rotated clockwise to extend the retractable cover 9 outwards to the maximum. The lens 6 is placed in the center of the telescopic screwing cover 9, and the telescopic screwing cover control rod 10 is rotated anticlockwise, so that the telescopic screwing cover 9 is retracted inwards, the linear lens can be fixed, and the rotation is stopped.
In order to hold the in-line lens and in order not to damage the lens 6, the material of the retractable screw 9 is phenolic plastic.
After the in-line lens is fixed, the laser 5 is turned on, and the laser light passes through the in-line lens to form surface light.
The angle of the surface light and the spray is adjusted to be vertical to each other. And adjust the camera 8 to face the spray. After all the angles are adjusted, the nozzle is opened to spray. Light appears at the intersection of the spray and the surface light, and the light pattern is photographed by the camera 8 to obtain a cross-sectional area pattern of the spray at this distance.
Moving different distances, repeatedly shooting the spray pattern, and splicing the spray pattern to obtain a three-dimensional image of spray injection. So that a rich spray profile can be achieved. If the cross-sectional area at a certain distance can be obtained, the effective distance of the spray can be obtained, and the like.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and 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 invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a spraying feature extraction device based on piece light, its characterized in that, the device include with spraying direction looks perpendicular piece light system (1) part that sets up and just to the collection system (2) part that sets up with the spraying direction, piece light system (1) part includes base (3), be equipped with laser instrument support (4) and circular lens support (7) on base (3), be equipped with laser instrument (5) on laser instrument support (4), be equipped with lens (6) on circular lens support (7), collection system part includes camera (8).
2. A plate light based spray feature extraction device according to claim 1, wherein the height of the laser (5) and the lens (6) relative to the base (3) is the same.
3. A spray feature extraction device based on sheet light according to claim 1, characterized in that a retractable screw cap (9) is provided on the circular lens support (7), the lens (6) is provided on the retractable screw cap (9), and the lens (6) is provided on the circular lens support (7) through the retractable screw cap (9).
4. A plate light based spray pattern extraction device according to claim 3, wherein the retractable screw cap (9) is circular in surface shape.
5. A spraying feature extraction device based on a sheet of light as claimed in claim 3, wherein the retractable screw cap (9) is further provided with a retractable screw cap control rod (10) for controlling the retractable screw cap (9) to retract.
6. A plate light based spray pattern extraction device as claimed in claim 3, wherein said retractable screw cap (9) is made of phenolic plastic.
7. A plate light based spray pattern feature extraction device according to any one of claims 1 to 6, wherein the lens (6) has a circular surface shape.
8. A plate light based spray pattern feature extraction device according to any one of claims 1 to 6, wherein the lens (6) is a line lens.
9. A spray feature extraction method using the sheet light-based spray feature extraction device according to any one of claims 1 to 6, comprising the steps of:
step 1: the lens (6) is adjusted and fixed through a telescopic screw cover (9) arranged on the circular lens support (7) and a telescopic screw cover control rod (10) arranged on the telescopic screw cover (9), and the laser (5) is opened to form surface light through the lens (6);
step 2: adjusting the direction of the surface light and the spraying direction to be mutually perpendicular, adjusting the direction of the camera (8) to be over against the spraying direction, and then forming a light pattern at the intersection of the surface light and the spraying direction;
and step 3: shooting the light pattern by using the camera (8) to obtain a cross-sectional area pattern of the spray at a corresponding distance;
and 4, step 4: moving the camera (8) to adjust the distance of the camera relative to the light pattern, and repeatedly shooting to obtain cross-sectional area patterns of the spray at different distances;
and 5: and splicing the cross-sectional area graphs of the sprays at all different distances to obtain a three-dimensional image of the spray jet, and further finally obtaining the spray characteristics based on the three-dimensional image.
10. The method for extracting spray features by using the device for extracting spray features based on sheet light according to claim 9, wherein the step 1 of adjusting and fixing the lens (6) by the retractable cover screw (9) disposed on the circular lens support (7) and the retractable cover screw control rod (10) disposed on the retractable cover screw (9) specifically comprises: firstly, the retractable screwing cover control rod (10) is rotated clockwise so that the retractable screwing cover (9) extends outwards and extends to the position with the maximum retractable distance, then the lens (6) is arranged at the central position of the retractable screwing cover (9), then the retractable screwing cover control rod (10) is rotated anticlockwise so that the retractable screwing cover (9) retracts, and the rotation is stopped when the lens (6) can be fixed in the retracting process of the retractable screwing cover (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010704962.0A CN111929968A (en) | 2020-07-21 | 2020-07-21 | Spraying feature extraction device and method based on sheet light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010704962.0A CN111929968A (en) | 2020-07-21 | 2020-07-21 | Spraying feature extraction device and method based on sheet light |
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| Publication Number | Publication Date |
|---|---|
| CN111929968A true CN111929968A (en) | 2020-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010704962.0A Pending CN111929968A (en) | 2020-07-21 | 2020-07-21 | Spraying feature extraction device and method based on sheet light |
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Citations (7)
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|---|---|---|---|---|
| WO2002095362A2 (en) * | 2001-05-24 | 2002-11-28 | New Objective, Inc. | Method and apparatus for feedback controlled electrospray |
| CN101408555A (en) * | 2007-10-08 | 2009-04-15 | 南京理工大学 | Laser speckle test system |
| CN102331510A (en) * | 2011-06-09 | 2012-01-25 | 华南理工大学 | Image processing method of PIV measurement of two phase flow of paper pulp |
| CN102393473A (en) * | 2011-08-02 | 2012-03-28 | 南京理工大学 | System for testing particle moving speed based on single image |
| CN104501737A (en) * | 2014-12-19 | 2015-04-08 | 中国人民解放军国防科学技术大学 | Device and method for positioning boundary of liquid jet spray |
| CN110118143A (en) * | 2018-02-07 | 2019-08-13 | 广州汽车集团股份有限公司 | A kind of drop point test device and method by spraying |
| CN210347107U (en) * | 2019-08-20 | 2020-04-17 | 楼蓝科技(江苏)有限公司 | Optical measuring device for fuel nozzle of gas turbine |
-
2020
- 2020-07-21 CN CN202010704962.0A patent/CN111929968A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002095362A2 (en) * | 2001-05-24 | 2002-11-28 | New Objective, Inc. | Method and apparatus for feedback controlled electrospray |
| CN101408555A (en) * | 2007-10-08 | 2009-04-15 | 南京理工大学 | Laser speckle test system |
| CN102331510A (en) * | 2011-06-09 | 2012-01-25 | 华南理工大学 | Image processing method of PIV measurement of two phase flow of paper pulp |
| CN102393473A (en) * | 2011-08-02 | 2012-03-28 | 南京理工大学 | System for testing particle moving speed based on single image |
| CN104501737A (en) * | 2014-12-19 | 2015-04-08 | 中国人民解放军国防科学技术大学 | Device and method for positioning boundary of liquid jet spray |
| CN110118143A (en) * | 2018-02-07 | 2019-08-13 | 广州汽车集团股份有限公司 | A kind of drop point test device and method by spraying |
| CN210347107U (en) * | 2019-08-20 | 2020-04-17 | 楼蓝科技(江苏)有限公司 | Optical measuring device for fuel nozzle of gas turbine |
Non-Patent Citations (2)
| Title |
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| THORLABS: "KS1SC-可调自动定心调整架", 《THORLABS》 * |
| 李治龙: "一种速度粒度实时同场测量技术的研究", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
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Application publication date: 20201113 |