CN105241888B - A kind of detection method and detection device of bottle mouth defect - Google Patents
A kind of detection method and detection device of bottle mouth defect Download PDFInfo
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- CN105241888B CN105241888B CN201510619692.2A CN201510619692A CN105241888B CN 105241888 B CN105241888 B CN 105241888B CN 201510619692 A CN201510619692 A CN 201510619692A CN 105241888 B CN105241888 B CN 105241888B
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- 238000001514 detection method Methods 0.000 title claims abstract description 39
- 230000007547 defect Effects 0.000 title claims abstract description 33
- 238000012545 processing Methods 0.000 claims abstract description 19
- 238000005286 illumination Methods 0.000 claims abstract description 4
- 235000012489 doughnuts Nutrition 0.000 claims description 3
- 238000012797 qualification Methods 0.000 claims description 2
- 235000013399 edible fruits Nutrition 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 5
- 238000007689 inspection Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
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- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 235000013405 beer Nutrition 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000007905 drug manufacturing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
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Abstract
The invention discloses a kind of detection method of bottle mouth defect and detection device, this method includes：The reflection ring of light formed to bottleneck is accurately positioned；The reflection ring of light after being accurately positioned is cut into several zonules in real time；Judge that the white pixel value of each zonule is if it is qualified zonule whether in the threshold range of zonule white pixel value, is otherwise unqualified zonule；It is qualified zonule to judge whether all zonules all, is if it is qualified bottleneck, is otherwise unqualified bottleneck.The device includes：Light emitting unit, camera and processing unit, wherein：The illumination that light emitting unit is emitted is mapped on bottleneck, forms the reflection ring of light；Camera is for capturing the reflection ring of light；Processing unit judges whether the bottleneck is qualified for assessing the reflection ring of light.The empty bottle inspection method and detection device of the present invention handles the reflection ring of light of bottleneck, is detected for the defect of bottleneck, detection speed is fast, accuracy rate is high.
Description
Technical field
The present invention relates to test technique automatic field, more particularly to the detection method and detection dress of a kind of bottle mouth defect
It sets.
Background technology
Currently, the safety problem of food is increasingly paid close attention to by government and its people.In existing beer, beverage and drug
Production process in, require that container filling meets corresponding quality standard, will be carried out in each link of production stringent
Detection.Wherein, the detection of bottleneck is most important, if bottleneck has the defects of damaged, abrasion, dirty, circularity, will have a direct impact on
The progress of subsequent handling not only influences the reputation of manufacturer, and due to bottleneck and consumption once there is underproof bottleneck
The intimate contact of person is likely to result in consumer's injury, the vital interests of consumer is caused to incur loss.
Invention content
The present invention for the above-mentioned prior art the problem of, propose the detection method and detection dress of a kind of bottle mouth defect
It sets, the reflection ring of light of bottleneck is handled, is detected for the defect of bottleneck, detection speed is fast, accuracy rate is high.
In order to solve the above technical problems, the present invention is achieved through the following technical solutions：
The present invention provides a kind of detection method of bottle mouth defect comprising following steps：
S11：The reflection ring of light formed to bottleneck positions；
S12：The reflection ring of light after positioning is cut into several zonules in real time；
S13：The white pixel value of each zonule is judged whether in the threshold range of zonule white pixel value, if
It is to judge the zonule for qualified zonule, if being otherwise judged as unqualified zonule；
S14：It is qualified zonule to judge whether all zonules all, is if it is judged as qualified bottleneck, if not
Then it is judged as unqualified bottleneck.
Preferably, the step S14 is further：Judge whether that all zonules are qualified zonule, if it is
It is judged as qualified bottleneck, if otherwise entering step S15：
S15：Judge whether have in unqualified zonule continuously, if there is then entering step S16, is judged as if without if
Qualified bottleneck；
S16：Judge whether the overall length of continuous unqualified zonule is less than preset value, is if it is judged as qualified bottle
Mouthful, if being otherwise judged as unqualified bottleneck.
Preferably, the quantity of the reflection ring of light is at least two；At least two reflection rings of light are donut.
Preferably, further including between the step S12 and step S13：
S101：When the white pixel value summation of the reflection ring of light is less than the lower limit of preset value, the reflection ring of light is carried out
Light compensates.
Preferably, further including between the step S12 and step S13：
S102：When the white pixel value summation of the reflection ring of light is more than the upper limit of preset value, according to zonule white
The mean value of pixel value determines the threshold range of new zonule white pixel value.
The present invention also provides a kind of detection devices of bottle mouth defect comprising：Light emitting unit, camera and processing are single
Member, wherein：
The illumination that the light emitting unit is emitted is mapped on bottleneck, forms the reflection ring of light；
The camera is for capturing the reflection ring of light；
The processing unit judges whether the bottleneck is qualified for assessing the reflection ring of light；Further,
The processing unit includes：
Positioning unit, for being accurately positioned to the reflection ring of light；
Cutter unit, for the reflected light ring cutting to be segmented into several zonules；
Zonule judging unit, for judging whether the zonule is qualified；
Bottleneck judging unit, for judging whether the bottleneck is qualified.
Preferably, further including：Intermediate reflector, the light that the light emitting unit is emitted are anti-by the intermediate reflector
It is mapped on the different-diameter position of the bottleneck, forms at least two reflection rings of light.
Preferably, the color of at least two reflection rings of light is different.
Preferably, the processing unit further includes：Light compensating unit, for the white pixel value when the reflection ring of light
Summation be less than preset value lower limit when, to the reflection ring of light progress light compensation.
Preferably, the processing unit further includes：The threshold value of white pixel value redefines unit, for working as the reflection
When the summation of the white pixel value of the ring of light is more than the upper limit of preset value, the threshold value of the white pixel value of the zonule is redefined
Range.
Compared to the prior art, the present invention has the following advantages：
（1）The detection method and detection device of bottle mouth defect provided by the invention, for the breakage of bottleneck, abrasion, it is dirty,
The defects of circularity, is detected automatically, and detection speed is fast, accuracy rate is high；
（2）The present invention is also detected the light intensity of the reflection ring of light of bottleneck, when light is integrally weaker, to light
Line compensates, so that image is more limpid in sight, facilitates the detection of defect；
（3）When the reflection ring of light of certain bottlenecks is integrally thicker, the present invention also recalculates the threshold value of white pixel value
Range forms dynamic bound, to avoid the problem that the reflection ring of light causes detection inaccurate, improves Detection accuracy；
（4）The defect of bottleneck possibly is present at different location, the reflection that the present invention passes through at least two different-diameters of acquisition
The ring of light assesses it respectively, to detect the defect of the bottleneck at different-diameter position, expands detection range, further carries
High detection accuracy rate；In order to be distinguished to different assessment rings, the present invention also uses the reflection ring of light of different colours.
Certainly, it implements any of the products of the present invention and does not necessarily require achieving all the advantages described above at the same time.
Description of the drawings
Embodiments of the present invention are described further below in conjunction with the accompanying drawings：
Fig. 1 is the detection principle diagram of the bottle mouth defect of the present invention；
Fig. 2 is the flow chart of the detection method of the bottle mouth defect of the embodiment of the present invention 1；
Fig. 3 is the structural schematic diagram of the detection device of the bottle mouth defect of the embodiment of the present invention 4；
Fig. 4 is that the reflected light ring of the detection device of the bottle mouth defect of the embodiment of the present invention 5 forms schematic diagram.
Label declaration：1- light emitting units, 2- cameras, 3- processing units, the centres 4- reflector, 5- bottlenecks；
31- positioning units, 32- cutter units, the zonules 33- judging unit, 34- bottleneck judging units.
Specific implementation mode
It elaborates below to the embodiment of the present invention, the present embodiment is carried out lower based on the technical solution of the present invention
Implement, gives detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementation
Example.
As shown in Figure 1, making LED flash light pass through an angle from one above bottleneck side by a light emitting devices
The position of circle is irradiated on bottleneck.If bottleneck is intact, the light irradiated can carry out mirror-reflection on bottleneck, reflection
Light will form a complete ring of light, if bottleneck is damaged, at this reflect light would not be reflected into above goes,
The reflection ring of light that damaged bottleneck is formed so is no longer just a complete annulus, but the damaged annulus of a notch, is led to
It crosses the white pixel value that analysis reflected light ring one encloses to can determine whether to judge which bottleneck is intact, qualified, which is
It is defective, underproof.
Embodiment 1：
In conjunction with Fig. 2, the detection method of the bottle mouth defect of the present invention is described in detail in the present embodiment comprising following
Step：
S11：The reflection ring of light formed to bottleneck positions；
S12：The reflection ring of light after positioning is cut into several zonules in real time；
S13：Judge each zonule white pixel value whether preset zonule white pixel value threshold range
It is interior, the zonule is if it is judged for qualified zonule, if being otherwise judged as unqualified zonule；
S14：It is qualified zonule to judge whether all zonules all, is if it is judged as qualified bottleneck, if not
Then it is judged as unqualified bottleneck.
Concrete operation method is：Will reflection the ring of light be divided into 255 deciles, judge each zonule white pixel value whether
In the threshold range of preset zonule white pixel value, if the white pixel value of 255 zonules is all in threshold range
It is interior, then this reflection ring of light to combine is exactly a complete reflection ring of light, illustrate to be one by the bottleneck that there is no problem
Bottleneck, as qualified bottleneck；Otherwise it is defective bottleneck, but is whether to be judged as that unqualified bottleneck will also be according to reality
Situation（Divide the size in region, the height of testing requirements）To be judged.
If divided, there are many decile, and each zonule is very small, at this time if unqualified zonule is distributed in bottleneck
Different location, cut very little, does not influence to use in practical applications, can also be judged as qualified bottleneck at this time.According to
The a diameter of 24mm of imperial crown is calculated, and Zhou Changwei 75.36mm at this time, after being divided into 255 zonules, each zonule is actually right
The length answered is 0.29mm, that is to say, that if unqualified zonule does not connect together but scatter, broken meeting very little,
What such bottleneck did not influenced to use；Only unqualified region is continuously at one, and the length of continuous cut is more than the model allowed
It encloses, is only a true bottle mouth defect at this time, be unqualified bottleneck.
Therefore, to solve the above-mentioned problems, step S14 is further：Judge whether that all zonules are qualified cell
Domain is if it is judged as qualified bottleneck, if otherwise entering step S15：
S15：Judge whether have in unqualified zonule continuously, if there is then entering step S16, is judged as if without if
Qualified bottleneck；
S16：Judge whether the overall length of continuous unqualified zonule is less than preset value, is if it is judged as qualified bottle
Mouthful, if being otherwise judged as unqualified bottleneck.
Certainly, step S15 and S16 are also may not include in different embodiments, when the zonule quantity of division is fewer, often
The range that a zonule occupies is bigger, simply by the presence of unqualified zonule, no matter whether it is continuous, is all judged as not conforming to
Lattice bottleneck；Or when requiring stringenter to defect, simply by the presence of unqualified zonule, so that it may be judged as unqualified production
Product.
Embodiment 2：
The present embodiment is to increase the step of light compensates, specially on the basis of embodiment 1：To reflecting the ring of light
It carries out after being divided into several zonules, the white pixel for reflecting the ring of light is all added to obtain white pixel and value, so
It is compared with preset minimum afterwards, if smaller than the minimum set, illustrates that the light of reflection is weak, it is right at this time
The light of the reflection ring of light compensates；If it is greater than preset minimum, illustrates that bright light is clear, just no longer compensate.
Embodiment 3：
In practical applications there is also a kind of problem, be exactly some bottlenecks the reflection ring of light it is particularly thick, result in this way
White pixel value inside the zonule of cutting can easily exceed the upper limit value of the white pixel value of preset zonule, can be recognized
To be a problematic bottleneck, in order to solve this problem, need to carry out the threshold range of the white pixel value of zonule
It resets.The mean value for calculating the white pixel value of all zonules first redefines new cell according to this mean value
Then the threshold range of domain white pixel value judges each small one by one according to the threshold range of new zonule white pixel value
Whether region is qualified zonule, if the white pixel value of the zonule is in the threshold range of new zonule white pixel value
It is interior, then be qualified zonule, be otherwise unqualified zonule, later the step of it is similar to Example 1, details are not described herein again.
Embodiment 4：
In conjunction with Fig. 3, the detection device of the bottle mouth defect of the present invention is described in detail in the present embodiment comprising：Light
Transmitter unit 1, camera 2 and processing unit 3, wherein processing unit 3 includes：Positioning unit 31, cutter unit 32, zonule
Judging unit 33 and bottleneck judging unit 34.The illumination that light emitting unit 1 is emitted is mapped on bottleneck, forms the reflection ring of light；Phase
Machine 2 is for capturing the reflection ring of light；Processing unit 3 is used to assess the reflection ring of light, judges whether bottleneck is qualified；Positioning unit
31 for positioning the reflection ring of light；Cutter unit 32 is used to reflected light ring cutting being segmented into several zonules；Zonule judges
Unit 33 for judging whether zonule qualified, when zonule white pixel value preset zonule white pixel value threshold
It is qualified zonule when being worth in range, is otherwise unqualified zonule；Bottleneck judging unit 34 is used for the qualification according to zonule
Situation judges whether bottleneck is qualified.
Embodiment 5：
The present embodiment is that intermediate reflector 4 is increased on the basis of embodiment 4, and the light that light emitting unit 1 emits passes through
After mirror-reflection occurs for intermediate reflector 4, be divided into the reflection light of at least two different directions, at least two different directions it is anti-
It penetrates at the different-diameter position that light is shone again on bottleneck 5, forms at least two reflection rings of light, schematic diagram is as shown in Figure 4.
In the present embodiment, intermediate reflector 4 is bowl-shape concaver, after by intermediate reflector 4 mirror-reflection occurs for light, shape
At the reflection light of three different directions, reflection light shines at the different-diameter position of bottleneck 5, and mirror-reflection quilt occurs again
Camera 2 captures, and forms three different reflection rings of light, and then 3 pairs of three reflection rings of light are assessed respectively through the processing unit,
To more accurately detect the open defect of bottle outlet.
In preferred embodiment, for the ease of distinguishing, three reflection rings of light are distinguished using three kinds of different colours, to more
The position of accurate identification bottle mouth defect.
In preferably implementing, processing unit 3 further includes：Light compensating unit, for weaker when reflecting ring of light overall light
When, light compensation is carried out to it, it is made to easily determine than more visible；In addition, processing unit 3 further includes：The threshold of white pixel value
Value redefines unit, for when the reflection ring of light is integrally thicker, redefining the threshold value model of the white pixel value of zonule
It encloses.
In preferred embodiment, it is additionally provided with device for eliminating in the subsequent conveying device of detection device of bottle mouth defect, by bottle
The underproof bottle automatic rejection of mouth.
Disclosed herein is merely a preferred embodiment of the present invention, these embodiments are chosen and specifically described to this specification, is
It is not limitation of the invention in order to preferably explain the principle of the present invention and practical application.Any those skilled in the art
The modifications and variations done within the scope of specification should all be fallen in the range of the present invention protects.
Claims (7)
1. a kind of detection method of bottle mouth defect, which is characterized in that include the following steps：
S11：The reflection light of at least two different directions reflected by the intermediate reflector of bowl-shape concaver to bottleneck not
With at least two reflection rings of light are formed at diametrical position, at least two reflection rings of light are donut, to described at least two
A reflection ring of light is positioned, and the color of at least two reflection rings of light is different；
S12：The reflection ring of light after positioning is cut into several zonules in real time；
S13：The white pixel value of each zonule is judged whether in the threshold range of zonule white pixel value, if it is
The zonule is judged for qualified zonule, if being otherwise judged as unqualified zonule；
S14：It is qualified zonule to judge whether all zonules all, is if it is judged as qualified bottleneck, if otherwise sentenced
Break as unqualified bottleneck.
2. the detection method of bottle mouth defect according to claim 1, which is characterized in that the step S14 is further：Sentence
Disconnected whether all zonules are qualified zonule, are if it is judged as qualified bottleneck, if otherwise entering step S15：
S15：Judge whether have in unqualified zonule continuously, if there is then entering step S16, is judged as qualification if nothing
Bottleneck；
S16：Judge whether the overall length of continuous unqualified zonule is less than preset value, is if it is judged as qualified bottleneck, such as
Otherwise fruit is judged as unqualified bottleneck.
3. the detection method of bottle mouth defect according to claim 1, which is characterized in that the step S12 and step S13 it
Between further include：
S101：When the white pixel value summation of the reflection ring of light is less than the lower limit of preset value, light is carried out to the reflection ring of light
Compensation.
4. the detection method of bottle mouth defect according to claim 1, which is characterized in that the step S12 and step S13 it
Between further include：
S102：When the white pixel value summation of the reflection ring of light is more than the upper limit of preset value, according to zonule white pixel
The mean value of value determines the threshold range of new zonule white pixel value.
5. a kind of detection device of bottle mouth defect, which is characterized in that including：Light emitting unit, camera and processing unit and in
Between reflector, the intermediate reflector be bowl-shape concaver, wherein：
The illumination that the light emitting unit is emitted is mapped on the intermediate reflector；
The reflection light for being divided at least two different directions after mirror-reflection occurs for the intermediate reflector, at least two not Tongfangs
To reflection light be irradiated at the different-diameter position on bottleneck, form at least two reflection rings of light, at least two is described anti-
It is donut to penetrate the ring of light, and the color of at least two reflection rings of light is different；
The camera is for capturing the reflection ring of light；
The processing unit judges whether the bottleneck is qualified for assessing the reflection ring of light；Further, described
Processing unit includes：
Positioning unit, for being accurately positioned to the reflection ring of light；
Cutter unit, for the reflected light ring cutting to be segmented into several zonules；
Zonule judging unit, for judging whether the zonule is qualified；
Bottleneck judging unit, for judging whether the bottleneck is qualified.
6. the detection device of bottle mouth defect according to claim 5, which is characterized in that the processing unit further includes：Light
Line compensating unit is used for when the summation of the white pixel value of the reflection ring of light is less than the lower limit of preset value, to the reflection
The ring of light carries out light compensation.
7. the detection device of bottle mouth defect according to claim 5, which is characterized in that the processing unit further includes：In vain
The threshold value of color pixel value redefines unit, and the summation for the white pixel value when the reflection ring of light is more than preset value
In limited time, the threshold range of the white pixel value of the zonule is redefined.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510619692.2A CN105241888B (en) | 2015-09-25 | 2015-09-25 | A kind of detection method and detection device of bottle mouth defect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510619692.2A CN105241888B (en) | 2015-09-25 | 2015-09-25 | A kind of detection method and detection device of bottle mouth defect |
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| Publication Number | Publication Date |
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| CN105241888A CN105241888A (en) | 2016-01-13 |
| CN105241888B true CN105241888B (en) | 2018-11-02 |
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| CN201510619692.2A Expired - Fee Related CN105241888B (en) | 2015-09-25 | 2015-09-25 | A kind of detection method and detection device of bottle mouth defect |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110431405B (en) * | 2017-02-06 | 2022-06-14 | 东洋玻璃株式会社 | Inspection device for glass bottles |
| CN107597614A (en) * | 2017-09-12 | 2018-01-19 | 上海大学 | A kind of metal can online light leak test system and its demarcation and diagnostic method at a high speed |
| CN110231351A (en) * | 2018-03-06 | 2019-09-13 | 佛山市顺德区顺达电脑厂有限公司 | AOI detection method |
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| CN105241888A (en) | 2016-01-13 |
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