CN113049605A - Foreign matter lamp inspection mechanism and lamp inspection method based on combined light source - Google Patents
Foreign matter lamp inspection mechanism and lamp inspection method based on combined light source Download PDFInfo
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- CN113049605A CN113049605A CN202110401354.7A CN202110401354A CN113049605A CN 113049605 A CN113049605 A CN 113049605A CN 202110401354 A CN202110401354 A CN 202110401354A CN 113049605 A CN113049605 A CN 113049605A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/90—Investigating the presence of flaws or contamination in a container or its contents
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N2021/0106—General arrangement of respective parts
- G01N2021/0112—Apparatus in one mechanical, optical or electronic block
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- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention discloses a foreign matter lamp inspection mechanism and a lamp inspection method based on a combined light source, belonging to the technical field of medicine bottle inspection equipment, and comprising a bottle body positioned between a light source system and an image acquisition assembly, wherein the light source system comprises an upper light source and a backlight source; the upper light source is positioned above the space between the backlight source and the bottle body; the light emitting surface of the upper light source faces downwards; the light emitting surface of the backlight source faces the bottle body; the image acquisition assembly comprises a camera aligned with the vial; and a light absorption plate is arranged in front of the backlight source. The invention can effectively eliminate the interference of the liquid level to the detection while ensuring the detection of the foreign matters such as cilia, white points and the like, and can improve the detection rate of the foreign matters in the large-capacity solution. The method realizes full coverage of different types of defect detection on a single station, and can improve the detection rate of foreign matters in the solvent.
Description
Technical Field
The invention belongs to the technical field of medicine bottle detection equipment, and particularly relates to a foreign matter lamp detection mechanism and a lamp detection method based on a combined light source.
Background
The lamp inspection machine is used for detecting visible foreign matters in the production solvent of a pharmaceutical factory. In order to ensure the detection effect of the solvent, a plurality of detection stations are generally distributed on a table inspector, and each detection station detects defects or foreign matters at different positions or in different types. In practical application, the backlight has better effect on detecting colored foreign matters; the stripe light is better in detecting white or semitransparent foreign matters.
In order to ensure the detection effect, the general method is to set a plurality of different detection stations, and each station adopts different illumination modes. If every station homoenergetic sets up many sets of light source system, gather solvent formation of image under many sets of different light sources, will have great promotion to the quick-witted detection effect of lamp inspection.
Disclosure of Invention
Aiming at the problems, the invention provides a foreign matter lamp inspection mechanism and a lamp inspection method based on a combined light source, which realize the full coverage of different types of defect inspection on a single station and can improve the detection rate of foreign matters in a solvent.
In order to achieve the purpose, the invention adopts the technical scheme that:
a foreign matter lamp inspection mechanism based on a combined light source comprises a bottle body arranged between a light source system and an image acquisition assembly, wherein the light source system comprises an upper light source and a backlight source; the upper light source is positioned above the space between the backlight source and the bottle body; the light emitting surface of the upper light source faces downwards; the light emitting surface of the backlight source faces the bottle body; the image acquisition assembly comprises a camera aligned with the vial; and a light absorption plate is arranged in front of the backlight source.
As a further improvement of the above technical solution:
the height of the luminous surface of the upper light source is lower than the height of the liquid level of the bottle body; or a light screen is arranged between the upper light source and the bottle body, and the lower end of the light screen is lower than the liquid level in the bottle body.
The upper light source is a strip-shaped or arc-shaped light source.
The light absorption plate is dark.
The light absorption plate is a semitransparent plate.
The method for performing the lamp inspection by adopting the foreign matter lamp inspection mechanism based on the combined light source comprises the following steps:
adjusting the height position of the upper light source to enable the height of the light emitting surface of the upper light source to be lower than the liquid level height of the solution; or a light screen is added, the height position of the light screen is adjusted, no light irradiates the liquid level of the solution, and meanwhile, no shielding is ensured between the detection area of the bottle body and the light screen;
when white or semitransparent foreign matters are detected, the upper light source is turned on, the backlight source is turned off, so that the scattered light of the upper light source is absorbed by the light absorption plate, a black background is formed in the bottle body, the white and semitransparent foreign matters are highlighted, and an image is acquired by the camera;
when the colored foreign matters are detected, the upper light source is closed, the backlight source is opened, light emitted by the backlight source penetrates through the light absorption plate and then irradiates on the bottle body, a backlight effect is formed in the bottle body, the colored foreign matters are highlighted, and the camera collects images;
and controlling the upper light source and the backlight source to be alternately lightened, acquiring an image when the upper light source is lightened in the previous frame of the camera, acquiring an image when the backlight source is lightened in the next frame of the camera, and sequentially and alternately circularly finishing acquisition.
The beneficial effects created by the invention are as follows:
1. the single-station lower backlight source and the single-station upper light source are imaged and detected once respectively, so that the full coverage of different types of foreign matter detection is realized;
2. the upper light source and the backlight detection are integrated under the single station, so that the detection effect is ensured, the detection stations can be reduced, the mechanical mechanism can be simplified, and the cost is reduced;
3. the backlight source and the upper light source are imaged and detected once respectively under the single station, the detection times can be increased under the limited station, and the foreign matter detection rate can be improved.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is an imaging diagram of a 10ml oral liquid bottle under backlight realized by the invention;
fig. 3 is a diagram of light source imaging on a 10ml oral liquid bottle realized by the invention.
In the figure: 1. an upper light source; 2. a backlight source; 3. a bottle body; 4. a camera; 5. a visor; 6. a light absorbing plate; 7. a foreign object.
Detailed Description
The following detailed description of the present invention is given for the purpose of better understanding technical solutions of the present invention by those skilled in the art, and the present description is only exemplary and explanatory and should not be construed as limiting the scope of the present invention in any way.
Referring to fig. 1, in a specific embodiment, a foreign object light inspection mechanism based on a combined light source includes a bottle body 3 disposed between a light source system and an image acquisition assembly, wherein the light source system includes an upper light source 1 and a backlight source 2; the upper light source 1 is positioned above the space between the backlight source 2 and the bottle body 3; the luminous surface of the upper light source 1 faces downwards; the light emitting surface of the backlight source 2 faces the bottle body 3; the image acquisition assembly comprises a camera 4 aimed at the vial 3; and a light absorption plate 4 is arranged in front of the backlight source 2.
In this embodiment, a foreign matter lamp inspection mechanism based on a combined light source includes a bottle body 3 located between a light source system and an image acquisition assembly, where the light source system includes an upper light source 1 and a backlight source 2; the upper light source 1 is positioned above the space between the backlight source 2 and the bottle body 3; the luminous surface of the upper light source 1 faces downwards; the light emitting surface of the backlight source 2 faces the bottle body 3; the image acquisition assembly comprises a camera 4 aimed at the vial 3; a light absorption plate 4 is arranged in front of the backlight source 2; the height of the luminous surface of the upper light source 1 is lower than the height of the liquid level of the bottle body 3.
In this embodiment, a foreign matter lamp inspection mechanism based on a combined light source includes a bottle body 3 located between a light source system and an image acquisition assembly, where the light source system includes an upper light source 1 and a backlight source 2; the upper light source 1 is positioned above the space between the backlight source 2 and the bottle body 3; the luminous surface of the upper light source 1 faces downwards; the light emitting surface of the backlight source 2 faces the bottle body 3; the image acquisition assembly comprises a camera 4 aimed at the vial 3; a light absorption plate 4 is arranged in front of the backlight source 2; a light screen 5 is arranged between the upper light source 1 and the bottle body 3, and the lower end of the light screen 5 is lower than the liquid level in the bottle body 3.
Further optimization in the above embodiment is as follows:
the upper light source 1 is a strip-shaped or arc-shaped light source.
The light absorbing plate 4 has a dark color.
The light absorption plate 4 is a translucent plate.
The method for performing the lamp inspection by adopting the foreign matter lamp inspection mechanism based on the combined light source comprises the following steps:
adjusting the height position of the upper light source 1 to enable the height of the light emitting surface of the upper light source 1 to be lower than the liquid level of the solution; or the light screen 5 is additionally arranged, and the height position of the light screen 5 is adjusted, so that no light irradiates the liquid level of the solution, and meanwhile, no shielding is ensured between the detection area of the bottle body and the light screen;
when white or semitransparent foreign matters are detected, the upper light source 1 is turned on, the backlight source 2 is turned off, so that the scattered light of the upper light source 1 is absorbed by the light absorption plate 4, a black background is formed in the bottle body 3, the white and semitransparent foreign matters are highlighted, and the camera 4 acquires images;
when colored foreign matters are detected, the upper light source 1 is closed, the backlight source 2 is opened, light emitted by the backlight source 2 penetrates through the light absorption plate 4 and then irradiates the bottle body 3, a backlight effect is formed in the bottle body 3, the colored foreign matters are highlighted, and the camera 4 collects images;
and controlling the upper light source 1 and the backlight source 2 to be alternately lightened, acquiring an image when the upper light source 1 is lightened in the previous frame of the camera 4, acquiring an image when the backlight source 2 is lightened in the next frame, and sequentially and alternately circularly finishing acquisition.
The invention has the specific working principle that:
the patent discloses a combined foreign matter detection method based on a strip-shaped light source and a backlight source under a single station; when the bar light source, i.e. the upper light source 1 is bright, white or semitransparent foreign matters are detected, and when the backlight source 2 is bright, colored foreign matters are detected.
The method realizes full coverage of different types of defect detection on a single station, and can improve the detection rate of foreign matters in the solvent.
The optical system of the patent is composed of a camera 4, a bottle body 2 and a light source system as shown in figure 1. The light source system comprises an upper light source 1, a backlight source 2, a light shading plate 5 and a light absorbing plate 6; the light emitted by the light source system irradiates the bottle body; the camera receives a solvent image at the back of the vial; the brightness of the image changes in the region containing the foreign matter inside the solvent.
The core of the patent is a light source system, and the light source system is composed of a backlight source 2, an upper light source 1, a light shielding plate 5 and a light absorption plate 6.
The light emitting surface of the upper light source 1 faces downwards, and the area higher than the light emitting surface is not directly irradiated by light and forms black images compared with other areas; the height of the light emitting surface of the upper light source 1 needs to be lower than the liquid level of the solvent bottle. The backlight source 2 penetrates through the solvent bottle in a perspective mode, colored foreign matters in the solvent bottle can shield part of the light source, and the camera is darker in imaging relative to other areas.
As shown in fig. 3, a translucent dark-colored light absorbing sheet is provided in front of the backlight 2. When the upper light source is bright, residual light irradiates the light absorption plate, the intensity of the light source is weak, and most of the light is absorbed by the light absorption plate under a black background; meanwhile, the irradiation direction of light is downward, after the residual light is reflected by the light absorption plate again, the light irradiated on the bottle body can be ignored, and at the moment, white or semitransparent foreign matters can be detected.
As shown in FIG. 2, when the back light is bright, the back light has a residual force after penetrating through the light absorption plate due to the high brightness light source, and can continuously penetrate through the bottle body, and at the moment, the colored foreign matter can be detected.
The camera adopts a high-speed camera, and after the light source channel is switched, the previous frame acquires an image when the strip is bright, and the next frame acquires an image when the strip is back bright, and the images are alternately circulated in sequence.
This patent protection point:
1) the patent is not limited to liquid medicine, the type and industry of the detection target are not limited, and typical products are as follows: ampoule water injection, oral liquid, glass infusion, plastic bottle infusion, soft bag infusion, joint drainage liquid medicine, various water beverages, alcoholic beverages, health beverages and the like are protected by the patent.
2) The light absorption plate is not limited by materials and categories, and any semitransparent colored material is protected by the patent;
3) the light source of the patent has the optimal downward irradiation effect, and the effective luminous surface of any light source is lower than the liquid level and irradiates downwards so as to avoid the illumination layout interfered by the liquid level;
4) the solution of realizing white background of an image under backlight and black background of an image under strip light through a colored light absorption plate is disclosed in the patent protection.
The backlight and the stripe light of the patent are not limited by materials, shapes, power, wavelengths, shading and the like.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.
Claims (6)
1. A foreign matter lamp inspection mechanism based on a combined light source comprises a bottle body (3) positioned between a light source system and an image acquisition assembly, and is characterized in that the light source system comprises an upper light source (1) and a backlight source (2); the upper light source (1) is positioned above the space between the backlight source (2) and the bottle body (3); the light emitting surface of the upper light source (1) faces downwards; the light emitting surface of the backlight source (2) faces the bottle body (3); the image acquisition assembly comprises a camera (4) aimed at the vial (3); and a light absorption plate (4) is arranged in front of the backlight source (2).
2. The foreign matter light detection mechanism based on the combined light source is characterized in that the height of the light emitting surface of the upper light source (1) is lower than the height of the liquid level of the bottle body (3); or a light screen (5) is arranged between the upper light source (1) and the bottle body (3), and the lower end of the light screen (5) is lower than the liquid level in the bottle body (3).
3. The combined light source-based foreign matter light inspection mechanism according to claim 1, wherein the upper light source (1) is a bar-shaped or arc-shaped light source.
4. The foreign matter light inspection mechanism based on combined light source as claimed in claim 1, characterized in that the light absorption plate (4) is dark color.
5. A combined light source based foreign matter candling mechanism as claimed in claim 1, wherein the light absorbing plate (4) is a translucent plate.
6. The method for performing the light inspection by adopting the foreign matter light inspection mechanism based on the combined light source as claimed in any one of claims 1 to 5, is characterized by comprising the following steps:
adjusting the height position of the upper light source (1) to enable the height of the light emitting surface of the upper light source (1) to be lower than the liquid level of the solution; or
A light screen (5) is additionally arranged, and the height position of the light screen (5) is adjusted, so that no light irradiates the liquid level of the solution, and meanwhile, no shielding is ensured between the detection area of the bottle body and the light screen;
when white or semitransparent foreign matters are detected, the upper light source (1) is turned on, the backlight source (2) is turned off, so that scattered light of the upper light source (1) is absorbed by the light absorption plate (4), a black background is formed in the bottle body (3), the white and semitransparent foreign matters are highlighted, and an image is collected by the camera (4);
when the colored foreign matter is detected, the upper light source (1) is closed, the backlight source (2) is opened, light emitted by the backlight source (2) penetrates through the light absorption plate (4) and then irradiates the bottle body (3), a backlight effect is formed in the bottle body (3), the colored foreign matter is highlighted, and the camera (4) collects images;
the upper light source (1) and the backlight source (2) are controlled to be alternately lightened, the image of the upper light source (1) when being lightened is collected in the previous frame of the camera (4), the image of the backlight source (2) when being lightened is collected in the next frame, and the collection is sequentially and alternately completed in a circulating mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110401354.7A CN113049605A (en) | 2021-04-14 | 2021-04-14 | Foreign matter lamp inspection mechanism and lamp inspection method based on combined light source |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110401354.7A CN113049605A (en) | 2021-04-14 | 2021-04-14 | Foreign matter lamp inspection mechanism and lamp inspection method based on combined light source |
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| CN113049605A true CN113049605A (en) | 2021-06-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115420752A (en) * | 2022-11-03 | 2022-12-02 | 佛山市新石器机器人有限公司 | Infusion bag foreign matter identification lamp system of examining |
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2021
- 2021-04-14 CN CN202110401354.7A patent/CN113049605A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115420752A (en) * | 2022-11-03 | 2022-12-02 | 佛山市新石器机器人有限公司 | Infusion bag foreign matter identification lamp system of examining |
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