CN108007942A - Projection rechecks machine and its bearing calibration - Google Patents
Projection rechecks machine and its bearing calibration Download PDFInfo
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- CN108007942A CN108007942A CN201711174392.3A CN201711174392A CN108007942A CN 108007942 A CN108007942 A CN 108007942A CN 201711174392 A CN201711174392 A CN 201711174392A CN 108007942 A CN108007942 A CN 108007942A
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- rechecked
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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
- G01N21/956—Inspecting patterns on the surface of objects
-
- 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
- G01N21/956—Inspecting patterns on the surface of objects
- G01N2021/95638—Inspecting patterns on the surface of objects for PCB's
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The present invention proposes that a kind of projection rechecks machine and its compensation correction method, so that the projection rechecks machine in different operating environments, the image projected can be compensated by correcting by the compensation correction method, there is provided operating personnel can find out the position that need to be confirmed whether it is real defect more quickly when rechecking on thing to be rechecked.
Description
Technical field
The present disclosure generally relates to a kind of optical detection for detection circuit, method is rechecked, more particularly should on one kind
The compensation correction method of machine is rechecked for projection.
Background technology
Optical identification system such as automatic optical detector (Automated Optical Inspection, AOI) and appearance
Final inspection machine (Automatic Final Inspection, AFI) etc. detect board, be nowadays commonly utilized in electronics industry it
In testing process on circuit board group assembling production lines, to substitute conventional artificial range estimation to inspect operation, it utilizes image technology
Compare whether determinand and standard video are variant to judge that determinand whether meets standard, it follows that automatic optics inspection
Significantly save detection time and human cost.In addition, automated optical detection equipment also has higher stability and operation
The advantages that elastic.
And via optical detection after, can again by the testing result of optical detection board and the thing to be rechecked there may be defect
A send to rechecking and stands, and is confirmed whether it is genuine defect after Artificial Cognition or is only the erroneous judgement of optical detection board, and then operator
The action that thing A to be rechecked is identified or repaired again by member.And when rechecking station, for that personnel can be facilitated to judge optical detector
The defects of platform detects be on the where position positioned at thing A to be rechecked, known projection reinspection station technology as shown in Figure 1, including
There are display unit 10, arithmetic element 20, projecting cell 30, platform 40, thing A to be rechecked is positioned over projection list by the mode of its design
In the platform below 40 of member, then pass through the projecting cell 30 of top the possibility of interpretation after optical detection board detects lacks by front end
Sunken place is projeced on thing A to be rechecked, to facilitate personnel being capable of directly visual physical location of the detection defect on thing A to be rechecked
And determine whether genuine defect.
Differ however, known projection rechecks machine in each producer's use environment and condition, such as because of actual thing A to be rechecked
The height that of different sizes therefore projecting cell is set up is different, or be when user uses 40 incomplete level of platform for placing etc. because
It is also opposite at the defects of element, this image for causing overhead projection unit 30 to project are deviated, and it is projected position to have
At the dotted line for projecting error among deviation, such as Fig. 1 by the actual thing A to be rechecked of arrow meaning, treated if defective locations are located at
Recheck the lower right corner of thing A, then the defects of projecting cell 30 projects position operator can be allowed to be difficult to identification positioned at actually waiting to recheck
On where position on thing A, therefore how compensation correction projection reinspection machine can be suitable for different operating environment, to facilitate behaviour
Whether be real defect, actually industry urgent problem to be solved, case of the present invention are for this for this if making personnel can more accurately compare out
It is proposed solution.
The content of the invention
One of present invention purpose is to shorten optical detector in the time needed for testing process, is particularly answered in optics
Examine rechecking in flow for station.
Another object of the present invention is to provide the detection method that a kind of projection rechecks machine, so that operating personnel are rechecking
When the position that need to be confirmed whether it is real defect can be actually being found out on thing to be rechecked more quickly.
A further object of the present invention is to propose that a kind of projection rechecks the compensation correction method of machine so that it is different
In operating environment, the image that machine projects can be rechecked to projection via the bearing calibration and be compensated by correcting.
For up to above-mentioned purpose, the present invention proposes that a kind of projection rechecks machine, comprising：
Display unit, available for display theoretical value image；
Instruction inputting device, available at least 2 points corresponding on selection theoretical value image and thing to be rechecked；
Arithmetic element, it is according at least 2 points calculating correcting values selected on theoretical value image and thing to be rechecked；And
Projecting cell, to the image after output calibration.
For up to above-mentioned purpose, the present invention proposes that a kind of projection rechecks the bearing calibration of machine, comprising：
Step S100：In at least 2 points selected on a theoretical value image；
Step S200：In on a projection plane according to actually thing to be rechecked select corresponding on theoretical value image this at least
2 points；
Step S300：Arithmetic element selected according to step S100 and step S200 this at least 2 points calculate correcting value；And
Step S400：Projected image after output calibration.
In one of present invention embodiment, operator on a display unit, using instruction inputting device (such as：Mouse,
Touch Screen, touch pad, stylus etc.) select from correct thing theoretical value image to be rechecked at least 2 points as reference point, example
It is defeated using instructing then according to the position of actually thing to be rechecked below projecting cell such as the optional upper left corner and each 1 point of the lower right corner
Enter mounted point choosing corresponding to (upper left corner and the lower right corner) selected on theoretical value image at least 2 points, by theoretical value image
And this at least 2 points actually selected on thing to be rechecked are measured to calculate distortion, then the perspective view that compensated rear output calibration is crossed
Picture；Certainly, also can first below the projecting cell according to actually thing to be rechecked select at least 2 points it is as a reference point, then from display singly
Corresponding this at least 2 points are selected on the theoretical value image of member, that is, selection refers in theoretical value image and actually on thing to be rechecked
Point can successively replace mutually.
In another embodiment of the present invention, operator on a display unit, using instruction inputting device (such as：Mouse
Mark, Touch Screen, touch pad, stylus etc.) selected 4 points of corner is as reference from correct thing theoretical value image to be rechecked
Point, clockwise is respectively upper left, upper right, bottom right, lower-left since the upper left corner, then multiple according to actually treating below projecting cell
The position of thing is examined, is clicked using instruction inputting device according to same sequence corresponding to 4 points selected on theoretical value image, by resonable
By value image and actually measured to calculate distortion for this 4 points selected on thing to be rechecked, then the throwing that compensated rear output calibration is crossed
Shadow image；Certainly, also first can to select 4 points of corner according to actually thing to be rechecked below the projecting cell as a reference point, then from showing
Show and click corresponding this 4 points according to same sequence on the theoretical value image of unit, that is, in theoretical value image and actual thing to be rechecked
Upper selection reference point can successively replace mutually.
In the another embodiment of the present invention, operator can also select non-at least 2 points positioned at corner and be used as reference point,
But the reference point is required to be distinguished easily by operator and regards, such as it may be alternatively located at actually there is metal wire on thing to be rechecked
At road turning point, oil film label, the selection that circuit unit larger part is as a reference point, so can more easily actually treat it is multiple
Examine and selected on thing corresponding to the reference point on theoretical value image.
In the another embodiment of the present invention, also can by built-in program come select automatically on theoretical value image this at least 2
Point, such as Lai 4 points of corner on automatic presupposition theory value image can be selected reference point by built-in program, then operator makes
Used time only needs to complete what distortion measured actually sequentially selecting 4 points of corner on thing to be rechecked using instruction inputting device
Calculate, the reference point of correspondence need to not be selected in theoretical value image.
Brief description of the drawings
Fig. 1 is the accompanying drawings that known projection rechecks station；
Fig. 2 is the correction schematic diagram that projection rechecks machine in one embodiment of the invention；
Fig. 3 is the correction schematic diagram that projection rechecks machine in another embodiment of the present invention；
Fig. 4 is the correction schematic diagram that projection rechecks machine in yet another embodiment of the invention；
Fig. 5 is the aligning step schematic diagram that projection of the present invention rechecks machine.
Embodiment
To be fully understood by the purpose of the present invention, feature and effect, hereby by following specific embodiments, and coordinate it is appended it
Schema, is described in detail the present invention, illustrates as after：
Referring to Fig. 2, it is that operator carries out reinspection work in reinspection machine (or to recheck station) in one embodiment of the invention
When relevant operation mode, the possible equipment of reinspection machine includes：Display unit 10, arithmetic element 20, projecting cell 30, platform
40th, instruction inputting device 50 etc., but the equipment for rechecking machine will not necessarily include foregoing 5 devices, such as arithmetic element completely
20 are likely to be present among the optical detection board (not shown) before reinspection machine；In another example platform 40 is not necessarily required, projection is single
The picture that need to be projected also can be directly incident upon (not shown) on the work top in the original environment of operator by member 30.
Display unit 10, projecting cell 30, instruction inputting device 50 in reinspection machine etc. are connected to not shown in Fig. 2
Arithmetic element 20, rechecks prow prior to first receiving a correct theoretical value image 101 in arithmetic element 20 and being presented in display list
Member 10 on, for operator can have a clear understanding of thing A to be rechecked correct images why, include on the theoretical value image 101
Interlock circuit and element distribution patterns (not shown), followed by instruction inputting device 50 (such as mouse, stylus, touch pad
Or Touch Screen etc.) in selected on theoretical value image 101 2 points for reference point (in the present embodiment with the upper left corner at dotted line circle choosing and
Exemplified by the reference point of the lower right corner), at this time platform 40 or operator's work are projeced into because actual thing A to be rechecked has been positioned over projecting cell 30
Make on the projection plane of table top, therefore the cursor of instruction inputting device 50 can be moved on the projection plane again, and it is selected actual
Correspond to 2 positions (upper left corner and the lower right corner) of theoretical value image 101 on thing A to be rechecked, arithmetic element 20 is according to reason at this time
By value image 101 and actually on thing A to be rechecked, each 2 points selected of correspondence is measured to calculate distortion, and the compensation of this departure is repaiied
Image after just after reprojection output calibration.Preferably, in actually selecting 2 points of the order and in theoretical value on thing A to be rechecked
The order selected on image 101 is identical.
The method that foregoing operation unit 20 calculates departure can be interpolation method, quadratic interpolattion etc. ask for polynomial parameters it
Mode, repeats no more in this.In addition, arithmetic element 20 also may be present in the optical detector before reinspection machine (or rechecking station)
In platform.And after this correction, the defects of projecting cell 30 projects location mark can more accurately be distinguished for operator apparent place
In actually on the where position of thing A to be rechecked, and different operating environment, 30 antenna height of different projecting cells, no can be overcome
With the projection error produced by the gradient of platform 40.
The 3rd figure is referred to again, is that operator is rechecked in reinspection machine (or rechecking station) in another embodiment of the present invention
Relevant operation mode during work, likewise, display unit 10, projecting cell 30, instruction inputting device 50 etc. are connected to Fig. 3
Not shown in arithmetic element 20, recheck prow and a correct theoretical value image 101 and presented prior to being received in arithmetic element 20
On display unit 10, for operator can have a clear understanding of thing A to be rechecked correct images why, the theoretical value image 101
On include interlock circuit and element distribution patterns (not shown), followed by instruction inputting device 50 (such as mouse, touch-control
Pen, touch pad or Touch Screen etc.) in selecting 4 points of corner on theoretical value image 101 it is reference point (with dotted line circle in the present embodiment
At choosing exemplified by the upper left corner, the upper right corner, the lower right corner and lower left corner reference point), because of actual thing A to be rechecked, to be positioned over projection single at this time
Member 30 is projeced on the projection plane of platform 40 or operator's work top, therefore again can be moved the cursor of instruction inputting device 50
To the projection plane, and sequentially select thing A actually to be rechecked on corresponding to theoretical value image 101 4 positions (upper left corner,
The upper right corner, the lower right corner and the lower left corner), arithmetic element 20 is according to theoretical value image 101 and actually each selected on thing A to be rechecked at this time
4 points of correspondence calculate distortion's amount, by the image after reprojection output calibration after this departure compensating approach.Preferably,
It is identical in the order actually selected 4 points of the order on thing A to be rechecked and selected on theoretical value image 101.
The method that foregoing operation unit 20 calculates departure can be interpolation method, quadratic interpolattion etc. ask for polynomial parameters it
Mode, repeats no more in this.In addition, arithmetic element 20 also may be present in the optical detection board before reinspection machine.And through this
After correction, the defects of projecting cell 30 projects location mark can more accurately be distinguished for operator apparent place in actually waiting to recheck
On the where position of thing A, and different operating environment, different 30 antenna height of projecting cell, different platform 40 can be overcome to incline
Projection error produced by gradient.
Refer to the 4th figure again, be the present invention another embodiment in operator answered in reinspection machine (or recheck station)
Relevant operation mode during work is examined, likewise, display unit 10, projecting cell 30, command input device 50 etc. are connected to
Arithmetic element 20 not shown in Fig. 4, rechecks prow and receives a correct theoretical value image 101 prior to arithmetic element 20 and present
On display unit 10, for operator can have a clear understanding of thing A to be rechecked correct images why.In the present embodiment, should
Theoretical value image 101 has the circuit for allowing operator to be easier to identification and element distribution patterns (such as cross figure in non-corner portion
Case and coding 00), followed by instruction inputting device 50 (such as mouse, stylus, touch pad or Touch Screen etc.) in theory
It is worth on image 101 that to select angle cross pattern and 00 position of coding be reference point, at this time because actual thing A to be rechecked has been positioned over projection
Unit 30 is projeced on the projection plane of platform 40 or operator's work top, therefore again can be moved the cursor of instruction inputting device 50
Move to the projection plane, and sequentially select 00 position of cross pattern and coding on thing A actually to be rechecked, at this time arithmetic element
20 cross patterns selected according to theoretical value image 101 and actually on thing A to be rechecked and 00 position of coding calculate distortion
Amount, by the image after reprojection output calibration after this departure compensating approach.Preferably, in actually on thing A to be rechecked select this 2
The order of point and the order selected on theoretical value image 101 are identical.
Likewise, the method that foregoing operation unit calculates departure, which can be interpolation method, quadratic interpolattion etc., asks for multinomial
The mode of parameter, repeats no more in this.In addition, arithmetic element 20 also may be present in the optical detection board before reinspection machine.
And after this correction, the defects of projecting cell 30 projects location mark can more accurately be distinguished for operator apparent place in reality
On the where position of thing A to be rechecked, and different operating environment, 30 antenna height of different projecting cells, different platform can be overcome
Projection error produced by 40 gradient.
The another embodiment of case of the present invention is, because correct 101 system of theoretical value image is by the design producer of thing A to be rechecked
There is provided, its map file such as CAM grades are pre-entered in arithmetic element 20, therefore also can be by this on theoretical value image 101 at least 2
The mode of point selection is built into the program of arithmetic element 20, such as predeterminable fixed 4 angles chosen on theoretical value image 101
Fall, then operator can be omitted in when using the reinspection flow of case of the present invention chooses the dynamic of reference point on theoretical value image 101
Make, thing A actually to be rechecked is selected directly in the projection plane of projecting cell 30 is corresponding to the 4 corner reference points preset
Can, preferably, the order of its selection and the order preset are identical, such as can the upper left corner of actual thing A to be rechecked start according to suitable
Hour hands are counterclockwise chosen.And in practice, selection mode clockwise or counterclockwise is only more logical choosing
Mode is taken, case of the present invention is not limited sequentially according to this, can also be chosen in a manner of upper left, bottom right, upper right, lower-left etc., in practice
When only need teaching operator choose order.
The another embodiment of case of the present invention is, when calculating distortion's amount mainly according to theoretical value image 101 and in fact
The corresponding reference point chosen on the thing A to be rechecked of border calculates, therefore the reference point first chosen on theoretical value image 101 chooses reality again
Reference point on the thing A to be rechecked of border, or the reference point first chosen actually on thing A to be rechecked are chosen on theoretical value image 101 again
Reference point be all possible, the limitation of this sequencing and non-invention case.
Furthermore cited embodiment is also not the limitation of claim in case of the present invention, in reference point
Only need at least more than 2 points in selection number；If 2 points of selected as, preferably this 2 points are located substantially at theoretical value image 101 or real
In the diagonal relative position of border thing A to be rechecked；If 4 points of selected as, preferably this 4 points are extremely located at theoretical value image 101 greatly
Or actual 4 corners of thing A to be rechecked.It is of course also possible to theoretical value image 101 or actually on thing A to be rechecked compared with can distinguish easily
At the metallic circuit turning point of knowledge, oil film label, circuit element larger part be used as the selection of reference point.
The 5th figure is referred to again, this rechecks the main bearing calibration flow chart of machine for case projection of the present invention, includes step
S100~step S400 (wherein step S100 and step S200 front and rear can be exchanged)：
Step S100：In at least 2 points selected on a theoretical value image；
Step S200：In on a projection plane according to actually thing to be rechecked select corresponding on theoretical value image this at least
2 points；
Step S300：Arithmetic element selected according to step S100 and step S200 this at least 2 points calculate correcting value；And
Step S400：Image after output calibration.
Finally, after case of the present invention is via rectification building-out, the image after output calibration, the output image after the correction can be scarce
Location mark figure is fallen into, defect is projeced into actually on thing A to be rechecked through projecting cell 30, preferably, the defective locations
Sign can be represented with patterns such as color, circle circle, fork forks；Output image after correction is alternatively the profile diagram of thing A to be rechecked, uses
The correct position that should be put with teaching process person thing A to be rechecked；In addition, the output image after correction is alternatively thing to be rechecked
All or part of content of A, or be foregoing both persons mixed above of diagram.
The present invention has hereinbefore been disclosed with preferred embodiment, is so familiar with the technology person and be should be understood that the embodiment
It is only used for describing the present invention, and is not construed as the scope of the limitation present invention.It should be noted that such as with the embodiment it is equivalent it
Change and displacement, should all be set to be covered by the category of the present invention.
【Symbol description】
10 display units
20 arithmetic elements
30 projecting cells
40 platforms
50 instruction inputting devices
A things to be rechecked
101 theoretical value images
S100~S400 steps
Claims (10)
1. a kind of projection rechecks machine, comprising：
Display unit, available for display theoretical value image；
Instruction inputting device, available at least 2 points corresponding on selection theoretical value image and thing to be rechecked；
Arithmetic element, it is according to this at least 2 points calculating correcting values selected on theoretical value image and thing to be rechecked；And
Projecting cell, to the image after output calibration.
2. projection as claimed in claim 1 rechecks machine, when selecting at 2, this 2 points are located substantially at diagonal positions；Yu Xuan
When 4 fixed, this 4 points are located substantially at 4 corners.
3. projection as claimed in claim 1 rechecks machine, which chooses on theoretical value image and thing to be rechecked
At at least 2 of correspondence, the order of its selection is identical.
4. projection as claimed in claim 1 rechecks machine, the image after the correction of the projecting cell output can be defective locations
Sign picture, thing profile diagram to be rechecked, thing all images to be rechecked, thing parts of images to be rechecked, or mixed above to be both foregoing
Conjunction person.
5. a kind of projection rechecks the bearing calibration of machine, comprising：
Step S100：In at least 2 points selected on a theoretical value image；
Step S200：In being selected on a projection plane according to actually thing to be rechecked corresponding to this at least 2 points on theoretical value image；
Step S300：Arithmetic element selected according to step S100 and step S200 this at least 2 points calculate correcting value；And
Step S400：Image after output calibration.
6. bearing calibration , Bu Sudden S100 as claimed in claim 5 are Ji Bu Sudden S200 can Qian Hou Zhi Change.
7. the bearing calibration as described in claim 5 or 6, when step S100 and step S200 select at this at least 2, it is selected
Order it is identical.
8. the bearing calibration as described in claim 5 or 6, step S100 is predeterminable in program, then operator can omit step
The operational motion of rapid S100.
9. the bearing calibration as described in claim 5 or 6, when being chosen to be in step S100, S200 at 2, this 2 points are located substantially at
Diagonal positions；When being chosen to be in step S100, S200 at 4, this 4 points are located substantially at 4 corners.
10. the bearing calibration as described in claim 5 or 6, the image after the correction of step S400 outputs can be defective locations
Sign picture, thing profile diagram to be rechecked, thing all images to be rechecked, thing parts of images to be rechecked, or mixed above to be both foregoing
Conjunction person.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711174392.3A CN108007942A (en) | 2017-11-22 | 2017-11-22 | Projection rechecks machine and its bearing calibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711174392.3A CN108007942A (en) | 2017-11-22 | 2017-11-22 | Projection rechecks machine and its bearing calibration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108007942A true CN108007942A (en) | 2018-05-08 |
Family
ID=62053112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711174392.3A Withdrawn CN108007942A (en) | 2017-11-22 | 2017-11-22 | Projection rechecks machine and its bearing calibration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113310438A (en) * | 2020-02-26 | 2021-08-27 | 广东博智林机器人有限公司 | Flatness measuring method, flatness measuring device, computer equipment and storage medium |
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| TW200925586A (en) * | 2007-10-10 | 2009-06-16 | Ckd Corp | Inspecting device for solder printing |
| CN101852745A (en) * | 2009-03-30 | 2010-10-06 | 株式会社高永科技 | Inspection method |
| CN104361580A (en) * | 2014-10-22 | 2015-02-18 | 山东大学 | Projected image real-time correction method based on planar screen |
| CN104754264A (en) * | 2015-03-13 | 2015-07-01 | 中国科学院空间应用工程与技术中心 | Feature point based projection deformation correcting method and system |
| TWI585398B (en) * | 2016-06-08 | 2017-06-01 | Projection-type printed circuit board re-inspection system and methods, and marking the location of the defect |
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2017
- 2017-11-22 CN CN201711174392.3A patent/CN108007942A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200925586A (en) * | 2007-10-10 | 2009-06-16 | Ckd Corp | Inspecting device for solder printing |
| CN101852745A (en) * | 2009-03-30 | 2010-10-06 | 株式会社高永科技 | Inspection method |
| CN104361580A (en) * | 2014-10-22 | 2015-02-18 | 山东大学 | Projected image real-time correction method based on planar screen |
| CN104754264A (en) * | 2015-03-13 | 2015-07-01 | 中国科学院空间应用工程与技术中心 | Feature point based projection deformation correcting method and system |
| TWI585398B (en) * | 2016-06-08 | 2017-06-01 | Projection-type printed circuit board re-inspection system and methods, and marking the location of the defect |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113310438A (en) * | 2020-02-26 | 2021-08-27 | 广东博智林机器人有限公司 | Flatness measuring method, flatness measuring device, computer equipment and storage medium |
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Application publication date: 20180508 |
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