CN110333242A - A kind of detection method and its system of PET bottle quality - Google Patents
A kind of detection method and its system of PET bottle quality Download PDFInfo
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- CN110333242A CN110333242A CN201910637408.2A CN201910637408A CN110333242A CN 110333242 A CN110333242 A CN 110333242A CN 201910637408 A CN201910637408 A CN 201910637408A CN 110333242 A CN110333242 A CN 110333242A
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- pet bottle
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
-
- 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
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- Computer Vision & Pattern Recognition (AREA)
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
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- Image Processing (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention discloses the detection methods and its system of a kind of PET bottle quality, in advance that the parameter typing of bottle-type is good in system including the bottle-type that selection needs detect before starting device；After starting device, when product passes through equipment entrance, photoelectric sensor triggering, encoder is started counting；When encoder displacement reaches pre-set triggering displacement, driving high definition camera, which take pictures, acquires picture, and will acquire picture and be sent to picture processor；It is sent to algorithm processor after the pretreatments such as processor rotates the picture of acquisition, cuts, format conversion, algorithm processor will treated that result is sent to system database compares；Product Acceptance Review: after comparing with database, qualified product is normal through rejected product then sends to system and rejects alarm signal, and rejected product is rejected.The present invention realizes PET bottle baling line and detects automatically, in this way, detection efficiency is higher, data are more accurate, error rate is lower.
Description
Technical field
The invention belongs to production line automatic measurement technique fields, and in particular to a kind of detection method of PET bottle quality and its
System.
Background technique
Currently, automatic checkout equipment plays vital effect existing in the industrial production.In order to improve production effect
Rate must enable detection device in the case where not interrupting industrial production, carry out on-line checking, and it is unqualified to reject detection in time
Product, so contactless online detection instrument plays increasingly important role.In present beer, food, beverage
During pharmaceutical production, it is desirable that container filling meets corresponding quality standard, will carry out before production is filling stringent
Detection.
In Vehicles Collected from Market, PET bottle detect based on artificial detection, each production station require assistant director detect, manually at
This height, verification and measurement ratio is low, simultaneously because artifact, product quality is unable to get reliable and stable guarantee, therefore artificial detection is very
Difficulty keeps up with production requirement.
Summary of the invention
The present invention for the technical problems in the prior art, provides a kind of detection method of PET bottle quality and its is
System, realizes PET bottle baling line and detects automatically, be owned by significant advantage on detection efficiency and accuracy.
The technical scheme to solve the above technical problems is that
A kind of detection method of PET bottle quality, specifically includes following processing step:
Selection bottle-type: selection needs the bottle-type that detects before starting device, in advance by the parameter typing of bottle-type in system
It is good；
Telltale mark: after starting device, when product passes through equipment entrance, photoelectric sensor triggering, encoder starts to count
Number；
Picture shooting: when encoder displacement reaches pre-set triggering displacement, driving high definition camera carries out acquisition of taking pictures
Picture, and will acquire picture and be sent to picture processor；
Image procossing and analysis: it is sent after the pretreatments such as processor rotates the picture of acquisition, cuts, format is converted
To algorithm processor, algorithm processor will treated that result is sent to system database compares；
Product Acceptance Review: after comparing with database, qualified product is normal through rejected product is then picked to system transmission
Except alarm signal, rejected product is rejected.
As the preferred of the embodiment of the present invention, the parameter of the bottle-type include nut cap size and color, gland gap,
The integrity degree of bottle body tie rod, base breakage threshold value.
As the preferred of the embodiment of the present invention, the process of the picture processing includes:
A, the picture of shooting is rotated, entire image is subjected to gain process, keep image clearly bright；
B, the threshold value of image binaryzation is determined according to the grey level histogram of whole image, and binaryzation is carried out to it, will be carried on the back
Scape and area-of-interest carry out primary segmentation；
C, format is converted into format required for corresponding software.
As the preferred of the embodiment of the present invention, the analytic process of the algorithm is every group of detection device according to PET bottle flowing water
The sequencing of line operation, measures corresponding measurement data a in one group of PET bottle respectively, according to calculation formula:(at this
In embodiment, n=5) calculate average valueAs measured value corresponding to PET bottle, detection dataWith standard valueIt does pair
Than, whenWhen, then it is determined as rejected product；WhenWhen, then it is determined as qualified product.
The embodiment of the present invention provides a kind of detection system of PET bottle quality, specifically include transport mechanism, photoelectric sensor,
Encoder, high definition camera, image processor, industrial control computer and rejecting mechanism；PET bottle is placed on the transport mechanism
On, the top of the transport mechanism is arranged in the high definition camera, is equipped with photoelectric sensor, institute in the inlet of the PET bottle
It states encoder and photoelectric sensor communicates to connect, the high definition camera is connect with image processor, the encoder, image procossing
Device and rejecting mechanism are connected with industrial control computer respectively.
As the preferred of the embodiment of the present invention, the industrial control computer includes data processing unit, data storage list
Member, data analysis unit and electric-motor drive unit；
The data processing unit by received data according to sequencing, according to calculation formula:It calculates
Average valueAnd by average valueIt is sent to data analysis unit；
The data storage cell is used to store the standard value of PET bottle parameters
The data analysis unit is used for the detection data for obtaining the data processing unitWith standard valueIt does pair
Than, whenWhen, then it is determined as rejected product；WhenWhen, then it is determined as qualified product；
The electric-motor drive unit is for driving rejected product rejecting mechanism to run.
The invention has the following advantages:
1, the detection method and its system of a kind of PET bottle quality of the present invention, is triggered, high definition using photoelectric sensor
Camera shoots capture, and image procossing calculates analysis, and the mode with the normal data comparison in database realizes PET bottle packaging
Line detects automatically, in this way, detection efficiency is higher, data are more accurate, error rate is lower.
2, the detection method and its system of a kind of PET bottle quality of the present invention, is prolonged using encoder instead of timer
When triggering/rejecting still be able to realize accurate triggering/rejecting when producing line velocity variations.
Detailed description of the invention
Fig. 1 is a kind of overhaul flow chart of the detection method of PET bottle quality of the present invention；
Fig. 2 is a kind of theory structure block diagram of the detection system of PET bottle quality of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to shown in Fig. 1 to 2, the embodiment of the present invention provides a kind of detection system of PET bottle quality, specifically includes conveyer
Structure, photoelectric sensor, encoder, high definition camera, image processor, industrial control computer and rejecting mechanism；PET bottle is placed
It is conveyed in the transport mechanism, the top of transport mechanism is arranged in high definition camera, is equipped with photoelectricity in the inlet of PET bottle
Sensor, encoder and photoelectric sensor communicate to connect, and the high definition camera is connect with image processor, the encoder, figure
As processor and rejecting mechanism are connected with industrial control computer respectively.
In embodiments of the present invention, industrial control computer includes data processing unit, data storage cell, data analysis
Unit and electric-motor drive unit；Wherein, the data processing unit by received data according to sequencing, it is public according to calculating
Formula:Calculate average valueAnd by average valueIt is sent to data analysis unit；Data storage cell is for storing
The standard value of PET bottle parametersData analysis unit is used for the detection data for obtaining the data processing unitWith mark
Quasi- valueIt compares, whenWhen, then it is determined as rejected product；WhenWhen, then it is determined as qualified product；Electric-motor drive unit
For driving rejected product rejecting mechanism to run.
In the present embodiment, the parameter of bottle-type mainly includes the size and color, the gap of gland, bottle body tie rod of nut cap
Integrity degree, threshold value of base breakage etc..In the present embodiment, timer Time-delayed trigger/rejecting is replaced using encoder, works as producing line
When velocity variations, it still is able to realize accurate triggering/rejecting.Industrial control computer is equipped with plc data communication interface, is convenient for
Standardized work, high definition camera use hardware trigger mode, and it is fast to adopt figure speed, respond sensitive.The a variety of high definition cameras of product support
Sdk (including Haikang camera, big China's camera and Basler camera).
Shown in Figure 1, the embodiment of the present invention provides a kind of detection method of PET bottle quality, specifically includes following technique
Step:
Selection bottle-type: in advance by the ginseng of bottle-type in the bottle-type that starting device (system) selects needs to detect before, system
Number typing is good.
Telltale mark: after starting device, when product passes through equipment entrance, photoelectric sensor triggering passes through internal communication
Trigger signal is transmitted to the plc inside industrial control computer by agreement, and when plc obtains photosignal, encoder is started counting；
Picture shooting: when encoder displacement reaches pre-set triggering displacement, driving high definition camera carries out acquisition of taking pictures
Picture, and will acquire picture and be sent to picture processor；
Image procossing and analysis: it is sent after the pretreatments such as processor rotates the picture of acquisition, cuts, format is converted
To algorithm processor, algorithm processor will treated that result is sent to system database compares, and adopts for high definition camera
The acquired original image of collection, by the pretreatment of image processor not only improve picture quality can also norm image format, mitigate
Algorithm load improves detection speed.
In the present embodiment, the process of picture processing includes:
A, the picture of shooting is rotated, entire image is subjected to gain process, keep image clearly bright；
B, the threshold value of image binaryzation is determined according to the grey level histogram of whole image, and binaryzation is carried out to it, will be carried on the back
Scape and area-of-interest carry out primary segmentation；
C, format is converted into format required for corresponding software.
In the present embodiment, the process of algorithm analysis, which is specifically included that, carries out image analysis and letter to pretreated image
Breath extracts (Exif extracts software etc.), as the operation of PET bottle enters detection shot region, and obtains measured value (in this implementation
In example, PET bottle be continuously shot for 5 times), the data value measured is transferred to data processing unit, data by signal wire
Processing unit is by the average value after the five groups of data processings of each PET bottleIt is sent to data analysis unit, data analysis unit is incited somebody to action
The average value arrivedWith the standard value stored in data storage cellJudgement is compared, whenWhen, then it is judged to not conforming to
Lattice product；WhenWhen, then it is determined as qualified product；If it is determined that PET bottle is unqualified.Certainly, for the color of nut cap, bottle body tie rod
The fairly simple judgement system such as integrity degree directly can intuitively be judged, do not need to execute aforesaid operations.
In the present embodiment, the data processing unit by the data of image preprocessing according to sequencing, according to calculating
Formula:Calculate average value(detected value)；And by average valueIt is sent to data analysis unit, the data are deposited
The standard value of storage PET bottle parameter in storage unit(diameter including nut cap, the gap threshold value of gland, base are damaged
Threshold value etc.)；The detection data that data analysis unit will obtainWith standard valueIt compares, whenWhen, then it is judged to not conforming to
Lattice product；WhenWhen, then it is determined as qualified product.
Product Acceptance Review: after comparing with database, qualified product is normal through rejected product is then picked to system transmission
Except alarm signal, rejected product is rejected.PET bottle is pushed into not by specific electric-motor drive unit starting rejected product rejecting mechanism
Qualified products laydown area, into rejected product region；If it is determined that PET bottle is qualified, rejected product rejecting mechanism is failure to actuate, to be measured close
Envelope bottle continues to go out to examine mouth from product along current pipeline to enter qualified product region.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of detection method of PET bottle quality, which is characterized in that comprise the following steps that:
Selection bottle-type: selection needs the bottle-type that detects before starting device, in advance that the parameter typing of bottle-type is good in system；
Telltale mark: after starting device, when product passes through equipment entrance, photoelectric sensor triggering, encoder is started counting；
Picture shooting: when encoder displacement reaches pre-set triggering displacement, driving high definition camera take pictures acquiring picture,
And it will acquire picture and be sent to picture processor；
Image procossing and analysis: calculation is sent to after the pretreatments such as processor rotates the picture of acquisition, cuts, format is converted
Method processor, algorithm processor will treated that result is sent to system database compares；
Product Acceptance Review: after comparing with database, qualified product is normal through rejected product then sends to system and rejects report
Alert signal, rejected product is rejected.
2. the detection method of PET bottle quality according to claim 1, it is characterised in that: the parameter of the bottle-type includes nut cap
Size and color, the gap of gland, the integrity degree of bottle body tie rod, base breakage threshold value.
3. Chu Rui vision detection system according to claim 1, it is characterised in that: the process of picture processing includes:
A, the picture of shooting is rotated, entire image is subjected to gain process, keep image clearly bright；
B, determine the threshold value of image binaryzation according to the grey level histogram of whole image, and binaryzation carried out to it, by background with
Area-of-interest carries out primary segmentation；
C, format is converted into format required for corresponding software.
4. Chu Rui vision detection system according to claim 1, it is characterised in that: the analytic process of the algorithm is every group of inspection
The sequencing that measurement equipment is run according to PET bottle assembly line measures corresponding measurement data a in one group of PET bottle, according to meter respectively
Calculate formula:(in the present embodiment, n=5) calculates average valueAs measured value corresponding to PET bottle, detection
DataWith standard valueIt compares, whenWhen, then it is determined as rejected product；WhenWhen, then it is determined as qualified product.
5. a kind of detection system of PET bottle quality, it is characterised in that: including transport mechanism, photoelectric sensor, encoder, high definition
Camera, image processor, industrial control computer and rejecting mechanism；PET bottle is placed in the transport mechanism, the high definition phase
The top of the transport mechanism is arranged in machine, is equipped with photoelectric sensor, the encoder and photoelectricity in the inlet of the PET bottle
Sensor communication connection, the high definition camera are connect with image processor, the encoder, image processor and rejecting mechanism point
It is not connected with industrial control computer.
6. the detection system of PET bottle quality according to claim 5, it is characterised in that: the industrial control computer packet
Include data processing unit, data storage cell, data analysis unit and electric-motor drive unit；
The data processing unit by received data according to sequencing, according to calculation formula:Calculate average valueAnd by average valueIt is sent to data analysis unit；
The data storage cell is used to store the standard value of PET bottle parameters
The data analysis unit is used for the detection data for obtaining the data processing unitWith standard valueIt compares, whenWhen, then it is determined as rejected product；WhenWhen, then it is determined as qualified product；
The electric-motor drive unit is for driving rejected product rejecting mechanism to run.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111361303A (en) * | 2020-04-08 | 2020-07-03 | 重庆电子工程职业学院 | Working method of automatic code spraying and detecting system for biological DNA card bag |
| CN112024462A (en) * | 2020-08-26 | 2020-12-04 | 深圳市华磊迅拓科技有限公司 | Defective material removing equipment and control method and control device thereof |
| CN112355575A (en) * | 2020-10-15 | 2021-02-12 | 无锡凌通精密工业有限公司 | Production process of low-resistance rotating shaft sleeve of special-shaped oil groove |
| CN112827845A (en) * | 2020-12-28 | 2021-05-25 | 肇庆大华农生物药品有限公司 | Vacuum detection method for transparent packaging bottle |
| CN113119488A (en) * | 2020-01-15 | 2021-07-16 | 吴伟银 | Novel reflective road cone cover cloth base processing technology |
| CN114047125A (en) * | 2021-10-29 | 2022-02-15 | 中山品高电子材料有限公司 | Real-time high-speed 3D appearance image detection system for lead frame and working method thereof |
| CN115156101A (en) * | 2022-09-07 | 2022-10-11 | 深兰科技(南京)有限公司 | Rejection method and related device |
| CN116493282A (en) * | 2023-04-12 | 2023-07-28 | 曲靖阳光新能源股份有限公司 | Rapid single-product silicon wafer sorting system and method based on machine vision |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113119488A (en) * | 2020-01-15 | 2021-07-16 | 吴伟银 | Novel reflective road cone cover cloth base processing technology |
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| CN114047125A (en) * | 2021-10-29 | 2022-02-15 | 中山品高电子材料有限公司 | Real-time high-speed 3D appearance image detection system for lead frame and working method thereof |
| CN115156101A (en) * | 2022-09-07 | 2022-10-11 | 深兰科技(南京)有限公司 | Rejection method and related device |
| CN115156101B (en) * | 2022-09-07 | 2022-11-22 | 深兰科技(南京)有限公司 | Rejection method and related device |
| CN116493282A (en) * | 2023-04-12 | 2023-07-28 | 曲靖阳光新能源股份有限公司 | Rapid single-product silicon wafer sorting system and method based on machine vision |
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