CN106770359A - A kind of method of flake quantity in utilization high resolution CCD image checking PVC powder - Google Patents
A kind of method of flake quantity in utilization high resolution CCD image checking PVC powder Download PDFInfo
- Publication number
- CN106770359A CN106770359A CN201611098569.1A CN201611098569A CN106770359A CN 106770359 A CN106770359 A CN 106770359A CN 201611098569 A CN201611098569 A CN 201611098569A CN 106770359 A CN106770359 A CN 106770359A
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- CN
- China
- Prior art keywords
- pvc powder
- high resolution
- ccd image
- image checking
- particulate
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Classifications
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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
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
Abstract
The present invention relates to a kind of method of flake quantity in chemical technology field, especially utilization high resolution CCD image checking PVC powder；Comprise the following steps：(1) judgement data are set by the faradic difference of regional area in the light sensitive diode dot matrix of the CCD photographing modules under PVC powder particulate normal condition and abnormal conditions, when CCD photographing modules capture abnormal particulate, and automatic shooting record immediately；(2) coverage area that the distance that workbench is moved each time in the x, y direction must can show according to microscope ocular determines that the time interval for moving each time need to be determined according to the response speed of camera and drive software；(3) tray slots of PVC powder to be measured are held, electric black treatment need to be carried out using anode oxidation process, make matte effect, beneficial effect：The interference of foeign element can be effectively discharged, accuracy is high.
Description
Technical field
It is especially a kind of using fish-eye number in high resolution CCD image checking PVC powder the present invention relates to chemical technology field
The method of amount.
Background technology
Cause the factor of PVC powder flake to be mainly the reactor during VCM monomer suspension polymerizings and clean not thorough, reaction
Process temperature controls excessively polymerization and weight caused by each thin portion regional temperature control difference of inaccurate, reactor etc. abnormal conditions
The abnormal particulate that multiple polymerization is formed.At present, polyvinyl chloride powder manufacturer and its user are that polyvinyl chloride powder is mixed into increasing
Mill fluxing after the auxiliary materials such as modeling agent, stabilizer, carbon black, is rolled into the thin slice of 0.20mm, then thin slice is layered on lamp box and is observed
Light leak spot determines fish-eye number (specifically can refer to GB/T 4611-2008), and this method has some shortcomings, such as roll milling sets
The pollution that pollution that pollution that standby cleaning is not caused thoroughly, working environment are caused, auxiliary material impurity are caused etc. factor all may
Cause the erroneous judgement to the true quality of PVC powder.
The content of the invention
The purpose of the present invention is：Overcome deficiency of the prior art, there is provided one kind utilizes high resolution CCD image checking
The method of flake quantity in PVC powder, the interference of other foeign elements can be reduced using the method.
To achieve the above object, the technical solution adopted by the present invention is as follows：
A kind of method of flake quantity in utilization high resolution CCD image checking PVC powder, methods described includes following step
Suddenly：
(1) by office in the light sensitive diode dot matrix of the CCD photographing modules under PVC powder particulate normal condition and abnormal conditions
The faradic difference in portion region sets judgement data, when CCD photographing modules capture abnormal particulate, and automatic immediately claps
Take the photograph record；
(2) covering that the distance that workbench is moved each time in the x, y direction must can show according to microscope ocular
Scope area determines that the time interval for moving each time need to determine according to the response speed of camera and drive software；
(3) tray slots of PVC powder to be measured are held, electric black treatment need to be carried out using anode oxidation process, make dumb light effect
Really.
Preferably, the tray slots are obtained using aluminum alloy materials, and the depth of the tray slots is 1mm.
Preferably, the X, the workbench of Y-direction will all be driven using screw mandrel, and be each provided with two band linear bearings
Guide rail.
Preferably, the CCD camera is installed to the eyepiece top of 160 power microscopes.
Operation principle：
1st, after PVC powder particulate amplifies 160 times or so under the microscope, it can be clearly seen that the shape of each particle and outer
See, normal particle is spherical in shape or goose egg type, and the particle of quality abnormal occurred according to its unusual condition it is following several outer
See difference：
2nd, irregular shape is presented, such as sheet, strip or surface spikes are protruded；
3rd, color distortion, the excessively particulate of polymerization, color would generally turn to be yellow slightly；
4th, exception, jagged exception can all occur in reflectance difference, the particulate of most of excessively polymerization, surface reflection degree
The subnormal particulate of microparticle surfaces reflectance, the abnormal microparticle surfaces reflectance without burr is higher than normal particulate.
5th, by office in the light sensitive diode dot matrix of the CCD photographing modules under PVC powder particulate normal condition and abnormal conditions
The faradic difference in portion region sets judgement data, when CCD modules capture abnormal particulate, automatically snaps immediately and remembers
Record is got off.
6th, workbench is driven to do rule movement by program prepared in advance in X-Y both directions to enter using servomotor
The mechanical progressive scan of row, CCD camera is installed to the eyepiece top of 160 power microscopes, carries out a wheel to PVC powder to be measured complete
Surface scan, and the abnormal particulate sum for photographing is counted, this quantity can represent flake quantity.Workbench is in X, Y-direction
On the distance that the moves each time coverage area that must can be shown according to microscope ocular determine, move each time when
Between be spaced and need to be determined according to the response speed of camera and drive software.
Beneficial effect using technical scheme is：
After amplifying 160 times or so under the microscope using PVC powder particulate in the present invention, it can be clearly seen that each particle
Shape and outward appearance, using reflectance difference, exception, hairiness can all occur in the particulate of most of excessively polymerization, surface reflection degree
The abnormal subnormal particulate of microparticle surfaces reflectance of thorn, the abnormal microparticle surfaces reflectance without burr is higher than normal
Particulate, can effectively exclude the interference of foeign element, and accuracy is high.
Specific embodiment
With reference to specific embodiment, the invention will be further described.
Implementation method：
1st, a pallet for holding PVC powder to be measured is processed using aluminum alloy materials, the pallet is simultaneously as the Y of workbench
Direction motion platform, tray upper surface processes the smooth groove that 100*100mm depth is 1mm using milling cutter, is treated for holding
PVC powder is surveyed, this groove domestic demand carries out electric black treatment using anode oxidation process, it is desirable to matte effect is made, to ensure metal material
The surface reflection effect of matter is completely obscured；
2nd, the workbench moved in X-direction, the Y-direction support described in 4.1 are processed using other one piece of aluminum alloy materials
Disk will be installed on this workbench；
3rd, X, the workbench of Y-direction will all be driven using screw mandrel, and require to be each provided with the guide rail of two band linear bearings；
4th, the screw mandrel in X/Y directions is driven respectively using two servomotors；
5th, can simultaneously control two programmable logic controller (PLC)s of servomotor (PLC) using one drive servo electricity
Machine, according to 3.3 description write control program realize bidirectional marching type move；
6th, CCD photographing modules are installed on the eyepiece of 160 power microscopes, then microscope is installed to described in 4.1 treats
The top of PVC powder pallet is surveyed, the distance of micro objective and PVC powder pallet in short transverse is adjusted, to realize good focusing.
7th, it is PVC powder to be measured is evenly laid out in tray slots, the PVC powder of redundance is scraped off with steel ruler；
8th, the initial position of servomotor is set, is that wherein a jiao of PVC powder groove aligns micro objective, from monitor
On check CCD modules obtain image quality, adjustment object lens highly reach microscopical pinpointed focus.
9th, start automatic running program, realize progressive scan, the picture frame number that whole scanning process is photographed is counted, to obtain
The quantity of PVC powder exception particulate is obtained, this quantity is to be essentially identical to fish-eye number.
With above-mentioned according to desirable embodiment of the invention as enlightenment, by above-mentioned description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property scope is not limited to the content on specification, it is necessary to its technical scope is determined according to right.
Claims (4)
1. in a kind of utilization high resolution CCD image checking PVC powder flake quantity method, it is characterised in that methods described bag
Include following steps：
(1) by partial zones in the light sensitive diode dot matrix of the CCD photographing modules under PVC powder particulate normal condition and abnormal conditions
The faradic difference in domain sets judgement data, when CCD photographing modules capture abnormal particulate, and automatic shooting note immediately
Record；
(2) coverage that the distance that workbench is moved each time in the x, y direction must can show according to microscope ocular
Area determines that the time interval for moving each time need to determine according to the response speed of camera and drive software；
(3) tray slots of PVC powder to be measured are held, electric black treatment need to be carried out using anode oxidation process, make matte effect.
2. in a kind of utilization high resolution CCD image checking PVC powder according to claim 1 flake quantity method, its
It is characterised by：The tray slots are obtained using aluminum alloy materials, and the depth of the tray slots is 1mm.
3. in a kind of utilization high resolution CCD image checking PVC powder according to claim 1 flake quantity method, its
It is characterised by：The X, the workbench of Y-direction will all be driven using screw mandrel, and be each provided with the guide rail of two band linear bearings.
4. in a kind of utilization high resolution CCD image checking PVC powder according to claim 1 flake quantity method, its
It is characterised by：The CCD camera is installed to the eyepiece top of 160 power microscopes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611098569.1A CN106770359A (en) | 2016-12-04 | 2016-12-04 | A kind of method of flake quantity in utilization high resolution CCD image checking PVC powder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611098569.1A CN106770359A (en) | 2016-12-04 | 2016-12-04 | A kind of method of flake quantity in utilization high resolution CCD image checking PVC powder |
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| CN106770359A true CN106770359A (en) | 2017-05-31 |
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| CN201611098569.1A Pending CN106770359A (en) | 2016-12-04 | 2016-12-04 | A kind of method of flake quantity in utilization high resolution CCD image checking PVC powder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108931533A (en) * | 2018-05-04 | 2018-12-04 | 天津博霆光电技术有限公司 | A kind of the PVC film flake detection device and method of view-based access control model |
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| CN108931533A (en) * | 2018-05-04 | 2018-12-04 | 天津博霆光电技术有限公司 | A kind of the PVC film flake detection device and method of view-based access control model |
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