CN109406534A - A kind of medicine bottle bottom pull ring defect detecting device and method - Google Patents
A kind of medicine bottle bottom pull ring defect detecting device and method Download PDFInfo
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- CN109406534A CN109406534A CN201811433122.4A CN201811433122A CN109406534A CN 109406534 A CN109406534 A CN 109406534A CN 201811433122 A CN201811433122 A CN 201811433122A CN 109406534 A CN109406534 A CN 109406534A
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- light source
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- 239000003814 drug Substances 0.000 title claims abstract description 53
- 230000007547 defect Effects 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000001960 triggered effect Effects 0.000 claims abstract description 3
- 238000001514 detection method Methods 0.000 claims description 28
- 238000007689 inspection Methods 0.000 claims description 12
- 230000011218 segmentation Effects 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 3
- 230000001788 irregular Effects 0.000 claims description 3
- 238000012797 qualification Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008103 glucose Substances 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002504 physiological saline solution Substances 0.000 description 2
- 238000005352 clarification Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
Classifications
-
- 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
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
-
- 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
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
- G01N2021/8887—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges based on image processing techniques
Abstract
The invention discloses a kind of medicine bottle bottom pull ring defect detecting device and methods, the device includes: chassis body, the chassis body has a mounting plate, the automatic rotation sorting mechanical device is set on mounting plate, setting back light and light source below mechanical device side are sorted in automatic rotation, target to be detected is set on automatic rotation sorting mechanical device, its bottom will be passed through by the rotation that mechanical device is sorted in the automatic rotation from the top of the light source, guarantee that the back light and light source illuminate target bottom to be detected simultaneously, the infrared sensor and image collecting device close on the light source and are arranged, when target to be detected goes to the top of the light source, trigger the infrared sensor, described image acquisition device, which is triggered, by the infrared sensor acquires image information, and the image information of acquisition is sent to described Image sensing controller, the present invention accurately and fast detect the transparent medicine bottle bottom pull ring defect of medicine bottle especially 250mL.
Description
Technical field
The present invention relates to defect detecting technique fields, more particularly to a kind of transparent medicine bottle of the 250mL based on characteristic matching
Bottom pull ring defective vision detection device and method.
Background technique
Transparent plastic medicine bottle is primarily used for the Packaging Bottle of filling glucose and physiological saline, and the pull ring defect of bottom of bottle is serious
The normal use of medicine bottle is hindered, also will cause bottom of bottle perforation sometimes, or even glucose and physiological saline can be polluted, it is raw to human body
Life threatens.Currently, general, using the method for manually visualizing detection, this method detection efficiency is low, and detection accuracy is low, and
It is easy missing inspection, it is not easy to realize the automation real-time quality monitoring of medicine bottle production.
To improve detection efficiency, the Chinese utility model patent of Publication No. CN205439224U proposes a kind of bottle inspection
Device is surveyed, which is detected by buildup of the plug to bottleneck inner wall, and although which eliminates artificial detection, mention
High production efficiency, but detection mode is relatively simple, detection efficiency has to be hoisted.
Summary of the invention
In order to overcome the deficiencies of the above existing technologies, purpose of the present invention is to provide a kind of medicine bottle bottom pull ring defects
Detection device and method, accurately and fast to detect the transparent medicine bottle bottom pull ring defect of medicine bottle especially 250mL.
In view of the above and other objects, the present invention proposes a kind of medicine bottle bottom pull ring defect detecting device, comprising: frame master
Body (1), automatic rotation sorting mechanical device (3), back light (4), light source (5), infrared sensor (6), image collecting device
(7) and image sensing controller (8), the chassis body (1) have a mounting plate (2), and mounting plate is arranged on (2)
Automatic rotation sorting mechanical device (3), automatic rotation sorting mechanical device (3) side-lower setting back light (4)
With light source (5), target to be detected is set on automatic rotation sorting mechanical device (3), and bottom will be by described automatic
The rotation of rotation sorting mechanical device (3) is passed through from the top of the light source (5), guarantees the back light (4) and light source
(5) target bottom to be detected is illuminated simultaneously, the light source (5) are closed in the infrared sensor (6) and image collecting device (7),
It when target to be detected goes to the top of the light source (5), triggers the infrared sensor (6), infrared sensor (6) touching
Described image acquisition device (7) are triggered after hair and acquire image information, and the image information of acquisition is sent to described image detection
Controller (8).
Preferably, automatic rotation sorting mechanical device (3) uses rotating platform and clamp structure, successively will be to be detected
Target is fixed on the rotating platform by the fixture, and the rotation using the rotating platform passes sequentially through object to be measured
Above the light source (5).
Preferably, the back light is using highlighted LED backlight light source, the highlighted LED backlight light source and the assembly
There are angle theta, the angular range, theta ∈ [30 °, 60 °] of the angle theta for platform setting.
Preferably, described image acquisition device (7) and horizontal plane be at angle β, the angular range beta ∈ of angle β [- 15 °,
15°]。
Preferably, the bottom of described image acquisition device (7) and target to be detected is as far as possible in same plane.
Preferably, the light source (5) integrates light source using highlighted LED ball.
In order to achieve the above objectives, the present invention also provides a kind of medicine bottle bottom pull ring defect inspection method, include the following steps:
Step S1 carries out gray proces to the image of acquisition；
Step S2 carries out region segmentation to gray level image, obtains target area associated with defect characteristic；
Step S3 carries out Feature Selection to target area, and carries out characteristic value meter to target area according to the feature of selection
It calculates, defects detection result is determined according to calculated result.
Preferably, further include following steps before step S2:
To treated, gray level image carries out median filtering, eliminates noise signal.
Preferably, in step S3, the feature of selection includes at least altitude feature, corner feature and area features.
Preferably, step S3 further comprises:
Step S300 obtains every coordinate of the target area, finds out the highest point (X of the target area1, Y1), then
Then minimum point (X is found out2, Y2), calculate total difference in height of the target area, and in acquire the target area it is total it is high after,
It is compared with total high codomain range of corresponding qualification, if being judged as unqualified production not in acceptability limit
Otherwise product enter next feature and judge；
Step S301, to the body form of irregular polygon present in target area, according to each apex coordinate meter
The gross area for obtaining the target area is calculated, and it is compared with the codomain range of the corresponding qualified gross area, if not closing
Within the scope of lattice, then it is judged as substandard product, otherwise subsequently enters next feature judgement；
Step S302 calculates the angle point of target area according to four angular coordinates in the pull ring region for obtaining target area
Feature compares it with the codomain range of corresponding qualified corner feature, if being judged as not in acceptability limit
Qualified products determine that current target to be detected is qualified products if passing through.
Compared with prior art, a kind of medicine bottle bottom pull ring defect detecting device of the present invention and method are by using highlighted
LED backlight light source and ball integral light source carry out dark-field imaging, using image sensing controller using defect inspection method to acquisition
Image is analyzed and processed, and carries out Feature Selection to target area, and carry out characteristic value to target area according to the feature of selection
It calculates, finally according to the characteristic value distributed areas of qualified samples, establishes criterion, to determine whether for qualified samples, accurate,
Rapidly realize the automatic detection to the transparent medicine bottle bottom pull ring defect of medicine bottle especially 250mL.
Detailed description of the invention
Fig. 1 is a kind of system structure diagram of medicine bottle bottom pull ring defect detecting device of the present invention；
Fig. 2 is a kind of step flow chart of medicine bottle bottom pull ring defect inspection method of the present invention；
Fig. 3 A- Fig. 3 E is the middle transparent medicine bottle bottom tab part region shape analysis of 250ml in the specific embodiment of the invention
Figure.
Specific embodiment
Below by way of specific specific example and embodiments of the present invention are described with reference to the drawings, those skilled in the art can
Understand further advantage and effect of the invention easily by content disclosed in the present specification.The present invention can also pass through other differences
Specific example implemented or applied, details in this specification can also be based on different perspectives and applications, without departing substantially from
Various modifications and change are carried out under spirit of the invention.
Fig. 1 is a kind of schematic perspective view of medicine bottle bottom pull ring defect detecting device of the present invention.As shown in Fig. 1, this
Invent a kind of medicine bottle bottom pull ring defect detecting device, comprising: chassis body 1, automatic rotation sorting mechanical device 3, backlight light
Source 4, light source 5, infrared sensor 6, image collecting device 7 and image sensing controller 8.
Wherein, chassis body 1 has a mounting plate 2, the automatic rotation sorting mechanical device 3 of setting, institute on mounting plate 2
It states automatic rotation sorting mechanical device 3 and uses rotating platform and clamp structure, i.e., successively by target to be detected (such as transparent medicine
Bottle) it is fixed on rotating platform by fixture, automatic rotation sorting 3 side-lower of the mechanical device setting back light 4 and light
Source 5, in the specific embodiment of the invention, back light 4 is using highlighted LED backlight light source, and light source 5 is using highlighted LED ball integral
Light source, highlights LED backlight light source 4 and mounting plate there are certain angle theta, the angular range, theta ∈ [30 °, 60 °] of the angle,
In order to can be effectively carried out bottom defect detection, target (i.e. the transparent medicine bottle for the defects detection of being carried out) to be detected must be by height
Bright LED ball integral beat it is bright, so target to be detected (i.e. the transparent medicine bottle for the defects detection of being carried out) bottom will be from highlighted LED ball
The top for integrating light source 5 is passed through, and guarantees that highlighted LED backlight light source 4 illuminates mesh to be detected with highlighted LED ball integral light source 5 simultaneously
Base number of a tender portion may insure completely to highlight target signature in this way.
Infrared sensor 6 closes on light source 5, when target to be detected goes to the top of light source 5, triggers infrared sensor 6, red
Triggering image collecting device 7 acquires image information after outer sensor 6 triggers, and the image information of acquisition is sent to image detection
Controller 8.In the specific embodiment of the invention, image collecting device 7 is using High performance industrial camera and horizontal plane at certain
Angle β setting, the angular range beta ∈ [- 15 °, 15 °] of the angle, position is set with can take by light source 5 top to
The bottom of detection target is advisable.Since what High performance industrial camera can take is limited in scope, then High performance industrial camera
As far as possible in the same plane, it just can guarantee completely show target in this way with target to be detected (transparent medicine bottle) bottom
Come.
In the specific embodiment of the invention, image sensing controller 8 is realized using a computer, passes through the figure to acquisition
As information progress image recognition processing is sentenced according to automatic rotation sorting mechanical device to the position of Target Photo to be detected
It is fixed whether to deviate, and then realize medicine bottle bottom pull ring defects detection.
Illustrate the detection process of the transparent medicine bottle bottom pull ring defects detection of the present invention below in conjunction with Fig. 1 and Fig. 2: when wanting
When carrying out transparent medicine bottle bottom pull ring defects detection, medicine bottle to be detected is passed sequentially through into fixture and is fixed on automatic rotation sorter
The rotating platform of tool device, when by rotating platform by medicine bottle to be detected rotate to highlighted LED ball integrate light source 5 top when,
LED backlight light source 4 is highlighted at this time and illuminates detection target bottom simultaneously with highlighted LED ball integral light source 5, triggers infrared sensing at this time
Device 6, infrared sensor 6 then triggers image collecting device 7 and acquires image information after triggering, and the image information of acquisition is sent to
Image sensing controller 8, then image sensing controller 8 is then by carrying out image recognition processing, root to the image information of acquisition
The position of Target Photo to be detected is made to determine whether to deviate according to automatic rotation sorting mechanical device, and then realizes that this is transparent
The defects detection of medicine bottle bottom pull ring.
Fig. 2 is a kind of step flow chart of medicine bottle bottom pull ring defect inspection method of the present invention.As shown in Fig. 2, of the invention
A kind of medicine bottle bottom pull ring defect inspection method, includes the following steps:
Step S1 carries out gray proces to the image of acquisition.Due to gray level image be conducive to the signature analysis of object with
It extracts, and then is conducive to subsequent analysis work；Therefore the Color Image Processing that the present invention first has to obtain is at gray level image.
Since the gray processing processing to image has been the mature prior art, it will not be described here.
Step S2, to treated, gray level image carries out median filtering, eliminates noise signal.Due to being schemed by camera
There is noise signal, therefore inevitably as in improve the efficiency of image procossing, noise processed first need to be carried out to image,
To remove noise.Used due to the specific means of the denoising to the image and prior art, it will not be described here.
Step S3 carries out region segmentation to the gray level image after denoising, obtains target area associated with defect characteristic.
Region segmentation mentioned here is to divide the image into multiple regions with a plurality of straight line, will region segmentation associated with defect characteristic
Out, then extracting to the characteristic of this partial region just becomes extremely to be easy.
Step S4 carries out Feature Selection to target area, and carries out characteristic value meter to target area according to the feature of selection
It calculates, defects detection result is determined according to calculated result.
Fig. 3 A- Fig. 3 E is the middle transparent medicine bottle bottom tab part region shape analysis of 250ml in the specific embodiment of the invention
Figure.Fig. 3 A is normal medicine bottle tab part, and Fig. 3 B is missing link medicine bottle tab part, and Fig. 3 C- Fig. 3 E is respectively to stick up ring medicine bottle pull ring
Three kinds of partial exemplary diagrams.It is analyzed according to the transparent medicine bottle bottom tab part region shape of 250ml, target area is mainly used
Feature have: altitude feature, corner feature and area features, but different features may expressive ability to defect it is different, institute
Corresponding defect classification is showed by corresponding feature, this feature should have corresponding defect faster more accurate
Means of identification.
Specifically, for the clarification of objective value calculating of the different characteristic of selection, steps are as follows:
1, altitude feature
In the specific embodiment of the invention, need to acquire total height in the different zones of same reference axis, specifically, it was known that
Every coordinate in region, and the highest and minimum point coordinate in each region can be obtained, to total Gao Jinhang in the region of frame choosing
Evaluation.Therefore, then in the specific embodiment of the invention, every coordinate of target area is first obtained, the highest of the target area is found out
Point (X1, Y1), it is then followed by and finds out minimum point (X2, Y2), calculate total difference in height of the target area, corresponding relationship
Formula are as follows:
HAlways=Y1-Y2
Find out target area it is total it is high after, with total high codomain range (this can be obtained ahead of time) of corresponding qualification into
Row comparison, if being judged as substandard product not in acceptability limit, will be recovered, if passed through, subsequently enters
Next feature judgement.
2, area features
In the specific embodiment of the invention, need to acquire the gross area of frame favored area, the object as present in the region
Shape is irregular polygon, and the polygonal shape is more complicated, but known each apex coordinate, and can be found out, polygon
Each vertex by arranged counterclockwise be V respectively1, V2... Vn, apex coordinate are successively (X1,Y1),(X2,Y2) ... (Xn, Yn),
So area can then be obtained by following formula:
It should be noted that if the sequence on vertex be it is clockwise, be negative, then needed pair by the area that above formula obtains
It takes just.
After finding out the gross area of target area, (this can be obtained in advance with the codomain range of the corresponding qualified gross area
) compare, if being judged as substandard product not in acceptability limit, will be recovered, if passed through, then into
Enter next feature judgement.
3, corner feature
Four angular coordinates are respectively in known pull ring region: (X1,Y1),(X2,Y2),(X3,Y3),(X4,Y4), (X1,
Y1),(X2Y2) it is two angle points above pull ring, (X3,Y3),(X4,Y4) it is two angle points below pull ring,
H1=| Y1-Y3|, H2=| Y2-Y4|
Wherein H1It is left side angle point height difference, H2It is the right angle point height difference
S1=| X3,X1|, S2=| X4-X2|
Wherein S1It is left side angle point horizontal space, S2It is the right angle point horizontal space
After finding out the corner feature of target area, with the codomain range (can be obtained ahead of time) of corresponding qualified corner feature
Compare, comparison shape and different defect types as shown in Fig. 3 A- Fig. 3 E, if not in acceptability limit, by
It is determined as substandard product, will be recovered, if passing through, transparent medicine bottle bottom pull ring defective vision detection process terminates, qualified
Bottle will be sent to downstream.
In conclusion a kind of medicine bottle bottom pull ring defect detecting device of the present invention and method are by using highlighted LED backlight
Light source and ball integral light source carry out dark-field imaging, are carried out using defect inspection method to image is obtained using image sensing controller
Analysis processing carries out Feature Selection to target area, and carries out characteristic value calculating to target area according to the feature of selection, finally
According to the characteristic value distributed areas of qualified samples, criterion is established, it is accurately and fast real to determine whether for qualified samples
The automatic detection to the transparent medicine bottle bottom pull ring defect of medicine bottle especially 250mL is showed.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.Any
Without departing from the spirit and scope of the present invention, modifications and changes are made to the above embodiments by field technical staff.Therefore,
The scope of the present invention, should be as listed in the claims.
Claims (10)
1. a kind of medicine bottle bottom pull ring defect detecting device, comprising: chassis body (1), automatically rotation sorting mechanical device (3),
Back light (4), light source (5), infrared sensor (6), image collecting device (7) and image sensing controller (8), the frame
Frame body (1) has a mounting plate (2), and automatic rotation sorting mechanical device (3) is arranged on mounting plate (2), described
Automatic rotation sorting mechanical device (3) side-lower setting back light (4) and light source (5), target to be detected be set to it is described certainly
On dynamic sorting mechanical device (3) of turn, bottom will be by the rotation of automatic rotation sorting mechanical device (3) from the light
The top in source (5) is passed through, described infrared to guarantee the back light (4) and light source (5) while illuminate target bottom to be detected
The light source (5) are closed in sensor (6) and image collecting device (7), when target to be detected goes to the top of the light source (5)
When, the infrared sensor (6) are triggered, image is acquired by the infrared sensor (6) triggering described image acquisition device (7)
Information, and the image information of acquisition is sent to described image detection controller (8).
2. a kind of medicine bottle bottom pull ring defect detecting device as described in claim 1, it is characterised in that: the automatic rotation point
Mechanical device (3) are picked using rotating platform and clamp structure, target to be detected is successively fixed on the rotation by the fixture
Turn on platform, passes sequentially through object to be measured above the light source (5) using the rotation of the rotating platform.
3. a kind of medicine bottle bottom pull ring defect detecting device as claimed in claim 2, it is characterised in that: the back light is adopted
With highlighted LED backlight light source, the highlighted LED backlight light source and the mounting plate are arranged there are angle theta, the angle theta
Angular range, theta ∈ [30 °, 60 °].
4. a kind of medicine bottle bottom pull ring defect detecting device as claimed in claim 3, it is characterised in that: described image acquisition dress
(7) and horizontal plane are set into angle β, the angular range beta ∈ [- 15 °, 15 °] of angle β.
5. a kind of medicine bottle bottom pull ring defect detecting device as claimed in claim 3, it is characterised in that: described image acquisition dress
The bottom of (7) and target to be detected is set as far as possible in same plane.
6. a kind of medicine bottle bottom pull ring defect detecting device as described in claim 1, it is characterised in that: the light source (5) is adopted
Light source is integrated with highlighted LED ball.
7. a kind of medicine bottle bottom pull ring defect inspection method, includes the following steps:
Step S1 carries out gray proces to the image of acquisition；
Step S2 carries out region segmentation to gray level image, obtains target area associated with defect characteristic；
Step S3 carries out Feature Selection to target area, and carries out characteristic value calculating, root to target area according to the feature of selection
Defects detection result is determined according to calculated result.
8. a kind of medicine bottle bottom pull ring defect inspection method as claimed in claim 7, which is characterized in that before step S2,
Further include following steps:
To treated, gray level image carries out median filtering, eliminates noise signal.
9. a kind of medicine bottle bottom pull ring defect inspection method as claimed in claim 7, which is characterized in that in step S3, choosing
The feature taken includes at least altitude feature, corner feature and area features.
10. a kind of medicine bottle bottom pull ring defect inspection method as claimed in claim 9, which is characterized in that step S3 is further
Include:
Step S300 obtains every coordinate of the target area, finds out highest point and the minimum point of the target area, calculates
Total difference in height of the target area, and in acquire the target area it is total it is high after, by total high value of itself and corresponding qualification
Domain range compares, if being judged as substandard product not in acceptability limit, otherwise enters next feature and judges；
Step S301 obtains the body form of irregular polygon present in target area according to the calculating of each apex coordinate
The gross area of the target area is obtained, and it is compared with the codomain range of the corresponding qualified gross area, if not in qualified model
In enclosing, then it is judged as substandard product, otherwise subsequently enters next feature judgement；
Step S302 calculates the corner feature of target area according to four angular coordinates in the pull ring region for obtaining target area,
It is compared with the codomain range of corresponding qualified corner feature, if being judged as unqualified not in acceptability limit
Product determines that current target to be detected is qualified products if passing through.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111330874A (en) * | 2020-04-17 | 2020-06-26 | 广州番禺职业技术学院 | Detection device and detection method for pollution or impurity defects of bottom area of medicine bottle |
| CN111563882A (en) * | 2020-04-17 | 2020-08-21 | 广州番禺职业技术学院 | Medicine bottle inclination calibration and posture adjustment mechanical structure device and method |
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