CN219018928U - Shooting device for monitoring flocs - Google Patents
Shooting device for monitoring flocs Download PDFInfo
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- CN219018928U CN219018928U CN202123246682.9U CN202123246682U CN219018928U CN 219018928 U CN219018928 U CN 219018928U CN 202123246682 U CN202123246682 U CN 202123246682U CN 219018928 U CN219018928 U CN 219018928U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
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Abstract
The utility model provides a shooting device for floc monitoring, which comprises: the optical identification device is used for shooting the flocs in the water processor; a light source assembly for providing illumination to the water processor; the included angle between the illumination direction of the light source component and the shooting direction of the optical identification device is 60-120 degrees. According to the shooting device for floc monitoring, the relative positions of the light source assembly and the optical recognition device are optimized, so that the shooting direction of the optical recognition device is perpendicular or nearly perpendicular to the irradiation direction of the light source assembly, the flocs positioned in the irradiation range in the shooting direction can be clearly imaged, meanwhile, the interference of the color and turbidity of the detected water body on imaging is greatly reduced, the overlapping of floc imaging can be greatly reduced, the difficulty in image segmentation is reduced, and the error in floc feature extraction is avoided.
Description
Technical Field
The utility model relates to the technical field of water treatment, in particular to a shooting device for floc monitoring.
Background
The coagulation process is a unit process most commonly used in water treatment, and is widely applied to aspects of tap water treatment, industrial raw water treatment, municipal and industrial sewage treatment and the like. It has long been desired to capture and analyze the characteristics of flocs (also called alum) formed during coagulation by utilizing the capability of machine vision, i.e. to monitor the flocs by shooting, to determine the state of coagulation progress, and to predict the success of the coagulation process.
The current floccule shooting method comprises a transmission type shooting method and a back-reflection type shooting method; the transmission type is that a light source is arranged in front of a camera, and the floccule is used for imaging by sampling or in-situ flowing between the camera and the light source and utilizing the floccule to absorb light; the back-reflection type imaging device is characterized in that a light source and a camera are arranged on the same side, and imaging is carried out through reflection of flocs.
Both of these imaging methods have a problem of overlapping images during the imaging process, resulting in difficulty in image division.
Disclosure of Invention
The utility model solves the problem that the image segmentation is difficult because of the image overlapping in the existing floccule shooting process.
In order to solve the above problems, the present utility model provides a photographing device for floc monitoring, comprising:
the optical identification device is used for shooting the flocs in the water processor;
a light source assembly for providing illumination to the water processor;
the included angle between the illumination direction of the light source component and the shooting direction of the optical identification device is 60-120 degrees.
Optionally, an included angle between the illumination direction of the light source assembly and the shooting direction of the optical recognition device is 90 °.
Optionally, the projection of the light source component in the shooting direction is located in the depth of field range of the optical recognition device.
Optionally, the center of projection of the light source component in the shooting direction is located at the focus of the optical recognition device.
Optionally, the light source assembly includes a light source, and a light emitting control structure positioned in front of the light source; and controlling the illumination range in the water processor through the light outlet control structure.
Optionally, the light emitting control structure includes a shielding plate, and a slit is disposed on the shielding plate.
Optionally, the light emitting control structure comprises a lens group.
Compared with the prior art, the shooting device for floc monitoring has the following advantages:
according to the shooting device for floc monitoring, the relative positions of the light source assembly and the optical recognition device are optimized, so that the shooting direction of the optical recognition device is perpendicular or nearly perpendicular to the irradiation direction of the light source assembly, the flocs positioned in the irradiation range in the shooting direction can be clearly imaged, meanwhile, the interference of the color and turbidity of the detected water body on imaging is greatly reduced, the overlapping of floc imaging can be greatly reduced, the difficulty in image segmentation is reduced, and the error in floc feature extraction is avoided.
Drawings
FIG. 1 is a block diagram of a floc shooting device in the present utility model;
FIG. 2 is a schematic diagram of a floc shooting device according to the present utility model;
FIG. 3 is a schematic diagram of a conventional back-shooting type floccule shooting device;
FIG. 4 is a schematic diagram of a conventional back-shooting type floc shooting result;
FIG. 5 is a schematic diagram of a conventional transmissive floccule photographing apparatus;
FIG. 6 is a schematic diagram of a prior art transmission type floc shooting result;
FIG. 7 is a schematic view of the result of shooting flocs in the present utility model;
FIG. 8 is a view of a flocculation image actually taken by the camera of the present utility model;
fig. 9 is a schematic diagram of a floc shooting device according to a second embodiment of the present utility model.
Reference numerals illustrate:
1-an optical recognition device; 2-a light source assembly; 21-a light source; 22-light emitting control structures; 221-a shielding plate; 2211-slit; 3-a water treatment device; 4-floc; 5-imaging the first floc; 6-imaging a second floc.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below are intended to be illustrative of the present utility model and not to be construed as limiting the utility model, and all other embodiments, based on the embodiments of the utility model, which a person of ordinary skill in the art would obtain without inventive faculty, are within the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for simplicity of description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In order to solve the problem that image segmentation is difficult due to image overlapping in the existing floc shooting process, the utility model provides a shooting device for floc monitoring, as shown in fig. 1 and 2, the shooting device comprises:
an optical recognition device 1 for photographing the flocs 4 in the water treatment device 3;
a light source assembly 2 for providing illumination to the water treatment device 3 so that the optical recognition device 1 can shoot the flocs 4 in the water treatment device 3;
in order to reduce the overlapping of the flocs after imaging, the illumination direction of the light source assembly 2 is preferably not overlapped with the shooting direction of the optical recognition device 1, and further preferably the included angle between the illumination direction of the light source assembly 2 and the shooting direction of the optical recognition device 1 is 60-120 degrees, so that the shooting direction of the optical recognition device 1 is perpendicular or nearly perpendicular to the illumination direction of the light source assembly 2.
Wherein the water processor 3 can be a coagulation tank, a flocculation tank, a sedimentation tank and other common water treatment equipment; the optical recognition device 1 may be a commonly used optical device such as CMOS, CCD image sensor, camera, etc.; the optical recognition device 1 and the light source component 2 can be arranged adjacent to the water processor 3, namely, the optical recognition device 1 and the light source component 2 are arranged on the outer side of the water processor 3, and the illumination and shooting of the inside flocs 4 are realized by arranging corresponding transparent windows on the outer wall of the water processor 3; the optical recognition device 1 and the outer side of the light source component 2 can be provided with corresponding waterproof structures and then placed at corresponding positions inside the water treatment device 3; the specific setting position and the setting method can be determined according to the volume of the water processor 3, the water quality condition, the shooting requirement and the like; specifically, the installation positions of the optical recognition device 1 and the light source assembly 2 are determined according to the angle between the illumination direction of the light source assembly 2 and the photographing direction of the optical recognition device 1.
In the water treatment process, the number of the flocs 4 in the water processor 3 is large, so that the shooting direction of the optical recognition device 1 coincides with the illumination direction of the light source assembly 2 by the traditional floc monitoring shooting device, and the phenomenon that images of a plurality of flocs 4 are overlapped in the shooting range of the optical recognition device 1 is caused.
For ease of understanding, the present application first describes the operation of the existing back-shooting type floc photographing device and the transmission type floc photographing device.
Referring to fig. 3, in the working process of the conventional back-reflection type floccule photographing device, the photographing direction of the optical recognition device 1 is consistent with or similar to the illumination direction of the light source assembly 2, and faces the floccule 4; it is assumed that three flocs 4 exist in the photographing range of the optical recognition device 1 in the water treatment device 3, and the three flocs 4 are sequentially distributed along the photographing direction of the optical recognition device 1; because the shooting direction of the optical recognition device 1 is consistent or similar to the illumination direction of the light source assembly 2, as shown in fig. 4, the three flocs 4 are located in the same line of sight of the optical recognition device 1, are in a reflective state, and have darker background, so that imaging overlap occurs.
Referring to fig. 5, in the operation of the conventional transmissive floccule photographing device, the photographing direction of the optical recognition device 1 is opposite to the illumination direction of the light source assembly 2, and the floccule 4 is located between the optical recognition device 1 and the light source assembly 2; it is assumed that three flocs 4 exist in the photographing range of the optical recognition device 1 in the water treatment device 3, and the three flocs 4 are sequentially distributed along the photographing direction of the optical recognition device 1; since the photographing direction of the optical recognition device 1 is opposite to the illumination direction of the light source assembly 2, as shown in fig. 6, the three flocs 4 are located in the same line of sight of the optical recognition device 1, all absorb light, the background is brighter, and the image of the flocs 4 appears dark, and the imaging overlaps.
In the photographing device for floc monitoring provided by the application, as shown in fig. 2, the photographing direction of the optical recognition device 1 is not coincident with the illumination direction of the light source assembly 2, and when the light source assembly 2 irradiates, only part of the flocs 4 in the photographing direction within the irradiation range are illuminated and then scattered to emit light; assuming that three flocs 4 exist in the shooting range of the optical recognition device 1 in the water processor 3, only one floc 4 in the middle is positioned in the irradiation range of the light source assembly 2, scattered luminescence is carried out, and two flocs 4 positioned on two sides of the two flocs scatter very weak light, as shown in fig. 7, the background is darker, the flocs 4 positioned in the irradiation range are imaged by a significantly larger amount, and the flocs 4 outside the shooting range are imaged by a particularly dark amount, so that overlapping of imaging of the flocs 4 is greatly reduced, difficulty in image segmentation is reduced, and error in extraction of characteristics of the flocs is avoided.
Referring to fig. 8, in a floc image actually shot by the shooting device for floc monitoring provided by the present application, a first floc image 5 is an image of a floc 4 located in an irradiation range, and the contrast between the image and a background is very large; the second floc image 6 in the picture is an image of the flocs 4 which are not in the irradiation range, and as seen from the figure, although there is a small amount of blurred image, the brightness is significantly lower, and is easily distinguished from the image of the flocs 4 in the irradiation range.
According to the shooting device for floc monitoring, the relative positions of the light source assembly 2 and the optical recognition device 1 are optimized, so that the shooting direction of the optical recognition device 1 is perpendicular or nearly perpendicular to the irradiation direction of the light source assembly 2, the flocs 4 in the irradiation range in the shooting direction can be clearly imaged, meanwhile, the interference of the color and turbidity of the detected water body on imaging is greatly reduced, the overlapping of the imaging of the flocs 4 can be greatly reduced, the difficulty in image segmentation is reduced, and the error in floc feature extraction is avoided.
Furthermore, it is not required that the angle between the illumination direction of the light source assembly 2 and the photographing direction of the optical recognition device 1 is 90 °, that is, the illumination direction of the light source assembly 2 is perpendicular to the photographing direction of the optical recognition device 1, so that the number of flocs 4 in the photographing direction within the irradiation range can be further reduced, the overlapping of the imaging of the flocs 4 is reduced, and the difficulty in image segmentation is reduced.
Based on the shooting process of the optical recognition component 2, an object located in the depth of field range can be imaged clearly, therefore, as shown in fig. 9, the projection of the optical recognition component 2 in the shooting direction is preferable, and the projection is located in the depth of field range of the optical recognition device 1, so that the optical recognition component 2 can irradiate the flocs 4 in the depth of field range of the optical recognition device 1, and the imaging definition of the flocs 4 in the image is further improved.
The present application further preferably uses the center of the projection of the light source assembly 2 in the photographing direction to be located at the focal point of the optical recognition device 1, that is, the projection of the center of the light source assembly 2 in the photographing direction coincides with the focal point of the optical recognition device 1, so as to further improve the imaging definition.
To further reduce overlapping of imaging of flocs 4, it is preferable in the present application that the irradiation range of light source module 2 is a cube perpendicular to the shooting direction of optical recognition device 1; based on the above analysis, the thinner the thickness of the cube in the photographing direction is, the fewer the number of flocs 4 capable of scattering luminescence in the photographing direction is, and thus the fewer the overlapping of imaging of the flocs 4 in the picture is; the cube is preferably located in the shooting direction to a thickness of not more than 1mm.
In order to control the irradiation range of the light source assembly 2, the light source assembly 2 preferably comprises a light source 21 and a light emitting control structure 22 positioned in front of the light source 21; the illumination range in the water processor 1 is controlled through the light outlet control structure 22, so that the imaging surface of the light source is narrow, only the flocs 4 on one plane can be prominently imaged, and the problem of mutual interference and overlapping of the flocs is solved.
The light source 21 may be an existing common light source such as an LED lamp; in order to realize the control of the illumination range, one implementation manner is that the light outlet control structure 22 comprises a shielding plate 221, a slit 2211 is arranged on the shielding plate 221, and the light emitted by the light source 21 irradiates the flocs 4 in the water treatment device 3 after penetrating out of the slit 2211; the irradiation range of the light source 21 in the water treatment device 3 can be determined according to the installation position of the light source 21 and the size of the slit; in order to reduce the imaging overlap and obtain a clear image, the present application prefers the projection of the center line of the slit 2211 in the shooting direction of the optical recognition device 1 to be located at the focus position; and the thickness of the slit 2211 in the photographing direction is preferably not more than 1mm.
Another way of implementing the control of the illumination range is that the light-emitting control structure 22 includes a lens group (not shown in the figure), that is, a corresponding lens group is disposed on the light-emitting side of the light source 21, and the light emitted by the light source 21 is converged and shaped by the lens group, so as to control the illumination range of the light source 21; the lens group may include a combination of structures such as a concave lens and a diffusion lens, and the specific structure of the lens group is not limited in this application.
Although the present disclosure is described above, the scope of protection of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the utility model.
Claims (7)
1. A photographing device for floc monitoring, comprising:
an optical recognition device (1) for shooting the flocs (4) in the water processor (3);
a light source assembly (2) for providing illumination to the water treatment device (3);
the included angle between the illumination direction of the light source component (2) and the shooting direction of the optical identification device (1) is 60-120 degrees.
2. Shooting device for floc monitoring according to claim 1, characterized in that the angle between the illumination direction of the light source assembly (2) and the shooting direction of the optical recognition device (1) is 90 °.
3. Shooting device for floc monitoring according to claim 2, characterized in that the projection of the light source assembly (2) in the shooting direction is located within the depth of field of the optical recognition device (1).
4. A camera for floc monitoring according to claim 3, characterized in that the centre of projection of the light source assembly (2) in the shooting direction is located at the focus of the optical recognition device (1).
5. A camera for floc monitoring according to any one of claims 1 to 4, characterized in that said light source assembly (2) comprises a light source (21) and a light emitting control structure (22) located in front of said light source (21); -controlling the illumination range in the water treatment device (3) by means of the light outlet control structure (22).
6. The photographing device for floc monitoring according to claim 5, wherein the light emitting control structure (22) comprises a shielding plate (221), and a slit (2211) is arranged on the shielding plate (221).
7. The camera for floc monitoring according to claim 5, characterized in that said light-emitting control structure (22) comprises a lens group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123246682.9U CN219018928U (en) | 2021-12-22 | 2021-12-22 | Shooting device for monitoring flocs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123246682.9U CN219018928U (en) | 2021-12-22 | 2021-12-22 | Shooting device for monitoring flocs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219018928U true CN219018928U (en) | 2023-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123246682.9U Active CN219018928U (en) | 2021-12-22 | 2021-12-22 | Shooting device for monitoring flocs |
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| Country | Link |
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| CN (1) | CN219018928U (en) |
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2021
- 2021-12-22 CN CN202123246682.9U patent/CN219018928U/en active Active
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