CN107339952A - A kind of three-dimensional measuring apparatus of each three direction projection of two groups of height - Google Patents
A kind of three-dimensional measuring apparatus of each three direction projection of two groups of height Download PDFInfo
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- CN107339952A CN107339952A CN201710627797.1A CN201710627797A CN107339952A CN 107339952 A CN107339952 A CN 107339952A CN 201710627797 A CN201710627797 A CN 201710627797A CN 107339952 A CN107339952 A CN 107339952A
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- optical grating
- mounting blocks
- projection device
- angle
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/2433—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures for measuring outlines by shadow casting
Abstract
The invention discloses a kind of three-dimensional measuring apparatus of each three direction projection of two groups of height, it is related to the detection field of circuit board, including image-taking device, the first mounting blocks, the second mounting blocks from top to bottom set gradually；Three group of first optical grating projection device is separately installed with three sides of first mounting blocks, the projection ray of every group of first optical grating projection device is equal with the angle β 1 of camera axis；Three group of second optical grating projection device is separately installed with three sides of second mounting blocks, the projection ray of every group of second optical grating projection device is equal with the angle β 2 of camera axis；The angle of the angle β 1 is less than angle β 2；The first optical grating projection device is staggered with the second optical grating projection device.The present apparatus can realize measured object height up to 10mm lossless optical measurement, effectively reduce light and project influence of the shade to accuracy of detection caused by measured object, have the advantages of versatile, measurement accuracy is high.
Description
Technical field
The present invention relates to the detection field of circuit board, more particularly to a kind of three-dimensional measurement of each three direction projection of two groups of height
Device.
Background technology
It is existing at present lossless for the detection of surface-pasted print solder paste, component height in circuit board electronic processing procedure
Optical measuring technique, i.e., full spectral composition grating combination phase outline is formed using programmable structure grating (PSLM) technology and modulated
E measurement technology (PMP), with reference to XYZ operation platforms, controlled by computer, PLC, with control software is voluntarily write, carry out motion control
System, detector light source（2D、3D）Control, IMAQ, data input output, through local behavior, calculate measured object height,
Area, then by area and the three-dimensional parameter for highly calculating measured object, print solder paste, the three-dimensional of component are surveyed so as to realize
Amount.
At present on the market based on the measurement apparatus of one direction projection, one direction projection ray is in measured object with respect to light
The back side can produce shade, and the more high then shaded area of height of measured object is bigger, and measurement error is also bigger, therefore, for tested
The highly of a relatively high situation of thing, one direction projection measurement apparatus exist error it is excessive in addition can not complete measurement the defects of.
For above-mentioned technical problem, the present inventor is developed and a kind of overcomes the one of above-mentioned technical problem by further investigation
Thus the three-dimensional measuring apparatus of kind two groups of each three direction projections of height, this case produce.
The content of the invention
In order to solve the above technical problems, the invention provides a kind of three-dimensional measurement of each three direction projection of two groups of height dress
Put, to realize the accurate detection to a variety of different height measured objects, while reduce measurement error, improve measurement accuracy.
To achieve the above object, the present invention uses following technical scheme：
A kind of three-dimensional measuring apparatus of each three direction projection of two groups of height, including from top to bottom set gradually image-taking device,
One mounting blocks, the second mounting blocks, first mounting blocks, the second mounting blocks are fixedly connected with image-taking device respectively；The capture
Device include T-shaped mounting seat, be arranged in the T-shaped mounting seat placement block, installed in it is described placement block on and camera lens down
Camera；The first mounting blocks upper and lower opening, it is made up of seven sides, and its cross-sectional area is gradually reduced from top to bottom；
The second mounting blocks upper and lower opening, it is made up of seven sides, and its cross-sectional area is gradually reduced from top to bottom；Described first
Three group of first optical grating projection device, the projected light of every group of first optical grating projection device are separately installed with three sides of mounting blocks
Line is equal with the angle β 1 of camera axis；Three group of second grating is separately installed with three sides of second mounting blocks to throw
Image device, the projection ray of every group of second optical grating projection device are equal with the angle β 2 of camera axis；The angle of the angle β 1
Degree is less than angle β 2；The first optical grating projection device is staggered with the second optical grating projection device.
Preferably, the projection ray of every group of first optical grating projection device is parallel with side corresponding to the first mounting blocks；Every group
The projection ray of second optical grating projection device is parallel with side corresponding to the second mounting blocks.
Preferably, the setting height(from bottom) of the first optical grating projection device is consistent described in three groups；Second optical grating projection described in three groups fills
The setting height(from bottom) put is consistent.
The beneficial effects of the invention are as follows：The present invention is by designing each three groups of optical grating projection devices of height, such measured object quilt
The projection ray of two groups of each three different directions is covered, and six raster images are gathered by camera respectively, the picture after collection by
Computer is decomposed, synthesis is handled, and is modulated e measurement technology (PMP) with reference to phase outline, is calculated height, the area of measured object
And three-dimensional parameter, so as to realize the accurate measurement to measured object；Meanwhile first optical grating projection device 21 project three directions
And the raster image equal with camera axis angle β 1, similarly, the second optical grating projection device 31 project three directions and
The raster image equal with camera axis angle β 2, the angle of the angle β 1 are less than angle β 2 so that using phase wheel
Exterior feature modulation e measurement technology (PMP) carries out just having two groups of parameters during height computing, so as to effectively increase measurement accuracy.The present invention has
Effect reduces influence of the shade to accuracy of detection caused by light projection measured object, suitable for the three of a variety of different height measured objects
Dimension measurement, has the advantages of versatile, measurement accuracy is high.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention.
Fig. 2 is top view of the present invention.
Fig. 3 is A-A sectional views of the present invention.
Fig. 4 is B-B sectional views of the present invention.
Fig. 5 is raster image computing schematic diagram of the present invention.
Embodiment
As Figure 1-Figure 5, present invention is disclosed a kind of three-dimensional measuring apparatus of each three direction projection of two groups of height, including
Image-taking device 1, the first mounting blocks 2, the second mounting blocks 3 from top to bottom set gradually, first mounting blocks 2, second are installed
Block 3 is fixedly connected with image-taking device 1 respectively；The image-taking device 1 includes T-shaped mounting seat 11, is arranged on the T-shaped mounting seat 11
On placement block 12, installed in it is described placement block 12 on and camera lens camera 13 directed downwardly；The upper and lower opening of first mounting blocks 2,
It is made up of seven sides, and its cross-sectional area is gradually reduced from top to bottom；The upper and lower opening of second mounting blocks 3, by seven
Side forms, and its cross-sectional area is gradually reduced from top to bottom；It is separately installed with three sides of first mounting blocks 2
Three group of first optical grating projection device 21, projection ray 211 and the axis 131 of camera 13 of every group of first optical grating projection device 21
Angle β 1 is equal；It is separately installed with three group of second optical grating projection device 31 on three sides of second mounting blocks 3, every group
The projection ray 311 of two optical grating projection devices 31 is equal with the angle β 2 of the axis 131 of camera 13；The angle of the angle β 1 is small
In angle β 2；The first optical grating projection device 21 is staggered with the second optical grating projection device 31.
Further, the projection ray 211 of every group of first optical grating projection device 21 puts down with 2 corresponding side of the first mounting blocks
OK；The projection ray 311 of every group of second optical grating projection device 31 is parallel with side corresponding to the second mounting blocks.
Further, the setting height(from bottom) of the first optical grating projection device 21 is consistent described in three groups；Second grating described in three groups is thrown
The setting height(from bottom) of image device 31 is consistent.
First optical grating projection device 21 and the second optical grating projection device 31 include electronic circuit, light engine, LED respectively
Lamp, wherein, electronic circuit produces programmable structure grating (PSLM), and grating is passed through light engine projects by LED as light source
Out, so, each first optical grating projection device 21, the second optical grating projection device 31 can be projected out different phases to measured object
Position, the raster image of different colours, raster image gathers by camera 13 respectively, the picture after collection decomposed by computer,
Synthesis is handled, and is modulated e measurement technology (PMP) with reference to phase outline, is calculated height, area and the three-dimensional parameter of measured object, from
And realize the detection to measured object.
In one embodiment, it is 12.5 ° to take angle β 1, and angle β 2 is 14 °, and the first optical grating projection device 21 projects three
Individual direction and the raster image equal with the angle β 1 of 13 axis of camera 131, similarly, the second optical grating projection device 31 projects
Three directions and the raster image equal with the angle β 2 of 13 axis of camera 131, so, using phase outline modulation measurement skill
Art (PMP) carries out the parameter for just having two groups of α angles during height computing, as shown in figure 5, according to H=Dtan（α）, then two can be obtained
Group height H data, so as to effectively increase measurement accuracy.The present apparatus can realize that measured object height up to 10mm's is lossless
Optical measurement, influence of the shade to accuracy of detection caused by light projection measured object is effectively reduced, with versatile, measurement
The advantages of precision is high.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in,
It should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
It is defined.
Claims (3)
- A kind of 1. three-dimensional measuring apparatus of each three direction projection of two groups of height, it is characterised in that：Including from top to bottom setting gradually Image-taking device, the first mounting blocks, the second mounting blocks, first mounting blocks, the second mounting blocks are fixed with image-taking device respectively Connection；The image-taking device includes T-shaped mounting seat, the placement block being arranged in the T-shaped mounting seat, installed in the placement block Upper and camera lens camera directed downwardly；The first mounting blocks upper and lower opening, be made up of seven sides, and its cross-sectional area from upper and Under be gradually reduced；The second mounting blocks upper and lower opening, it is made up of seven sides, and its cross-sectional area gradually contracts from top to bottom It is small；Three group of first optical grating projection device, every group of first optical grating projection are separately installed with three sides of first mounting blocks The projection ray of device is equal with the angle β 1 of camera axis；Three are separately installed with three sides of second mounting blocks The second optical grating projection device of group, the projection ray of every group of second optical grating projection device are equal with the angle β 2 of camera axis；Institute The angle for stating angle β 1 is less than angle β 2；The first optical grating projection device is staggered with the second optical grating projection device.
- A kind of 2. three-dimensional measuring apparatus of each three direction projection of two groups of height as claimed in claim 1, it is characterised in that：Every group The projection ray of one optical grating projection device is parallel with side corresponding to the first mounting blocks；The projection of every group of second optical grating projection device Light is parallel with side corresponding to the second mounting blocks.
- A kind of 3. three-dimensional measuring apparatus of each three direction projection of two groups of height as claimed in claim 1 or 2, it is characterised in that：Three The setting height(from bottom) of group the first optical grating projection device is consistent；The setting height(from bottom) of the second optical grating projection device is consistent described in three groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710627797.1A CN107339952B (en) | 2017-07-28 | 2017-07-28 | Three-dimensional measuring device for projection in three directions of high and low groups |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710627797.1A CN107339952B (en) | 2017-07-28 | 2017-07-28 | Three-dimensional measuring device for projection in three directions of high and low groups |
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| Publication Number | Publication Date |
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| CN107339952A true CN107339952A (en) | 2017-11-10 |
| CN107339952B CN107339952B (en) | 2023-07-28 |
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| CN201710627797.1A Active CN107339952B (en) | 2017-07-28 | 2017-07-28 | Three-dimensional measuring device for projection in three directions of high and low groups |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109531226A (en) * | 2019-01-09 | 2019-03-29 | 苏州北斗星智能科技有限公司 | A kind of compressor cutting centralized positioning detection device |
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| CN101246228A (en) * | 2008-02-01 | 2008-08-20 | 黑龙江科技学院 | Phase shift optical grating in three-dimensional measuring system |
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| CN107339952B (en) | 2023-07-28 |
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