CN209147948U - Contour outline measuring set based on linear light source - Google Patents
Contour outline measuring set based on linear light source Download PDFInfo
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- CN209147948U CN209147948U CN201920044392.XU CN201920044392U CN209147948U CN 209147948 U CN209147948 U CN 209147948U CN 201920044392 U CN201920044392 U CN 201920044392U CN 209147948 U CN209147948 U CN 209147948U
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Abstract
The utility model discloses a kind of contour outline measuring sets based on linear light source comprising article carrying platform, Image Acquisition terminal, control processing terminal, at least one first linear light source and at least one second linear light source.Article carrying platform is equipped with measured zone, and testee is placed in measured zone.First linear light source and the second linear light source are respectively used to project first light source line and second light source line to testee, and the first linear light source is arranged along the direction of second light source line, and the second linear light source is arranged along the direction of first light source line.Image Acquisition terminal is used to acquire the first linear light source and the second linear light source is incident upon the projected image on testee, and the first predetermined angle and the second predetermined angle are respectively provided between the first linear light source and the second linear light source and the optical axis of Image Acquisition terminal.Processing terminal is controlled for the positional relationship according to the first linear light source and the second linear light source and Image Acquisition terminal, calculates the three-D profile of object under test.The utility model can effectively improve the scanning accuracy to testee.
Description
Technical field
The utility model relates to the technical field of three-dimensional measurement, in particular to a kind of profile measurement dress based on linear light source
It sets.
Background technique
It is a kind of common detection means based on linear light source detection object three-D profile, majority uses a wordline light source, inspection
Degree of testing the speed is slower.In order to meet the quick detection demand of production, the quickly horizontal and vertical both direction of detection object is realized simultaneously
Profile, use two instead and be mutually perpendicular to linear light source and be scanned.
However, since only one light source of cross linear light source emits position, if stage surface is vertical with camera optical axis,
When obtaining two vertical light source lines on camera image, just has a light source line and the light source face constituted is coplanar with camera optical axis
Or it is parallel, when surface of light source is coplanar with camera optical axis, three-dimensional information can not be detected, and when surface of light source is parallel with camera optical axis, three
Tieing up detection accuracy also can be very poor.And due to cross linear light source can not every linear light source of independent control brightness, due to different
Material surface reflective is different, and the luminance difference that will cause two lines is larger, to not can be implemented simultaneously optimum detection effect.
Utility model content
In view of the problems of the existing technology, the main purpose of the utility model is to provide a kind of profile based on linear light source
Measuring device, it is intended to improve the scanning speed and scanning effect to testee.
To achieve the above object, the utility model proposes the contour outline measuring set based on linear light source, comprising: loading is flat
Platform, at least one first linear light source, at least one second linear light source, Image Acquisition terminal, and control processing terminal.On article carrying platform
Equipped with measured zone, testee is placed in the center of the measured zone.First linear light source is used to project to testee
First light source line, the second linear light source are used to project second light source line, the second light source line and first light to testee
Source line cross-image acquisition terminal is used to acquire first linear light source and second linear light source is incident upon on testee
Projected image, and the optical axis of described image acquisition terminal passes through the center of the measured zone.Also, first linear light
There is the first predetermined angle, second linear light source and described image acquisition are eventually between source and the optical axis of described image acquisition terminal
There is the second predetermined angle between the optical axis at end.Control processing terminal be used for according to first linear light source and the second linear light source with
The positional relationship of described image acquisition terminal calculates the three-D profile of object under test.
In some embodiments of the utility model, the first predetermined angle is between 0 °~80 °.
In some embodiments of the utility model, the second predetermined angle is between 0 °~80 °.
In some embodiments of the utility model, the first light source line and described image of the First Line light source projects
The horizontal direction of acquisition terminal is parallel, the second light source line of the second linear light source projection and erecting for described image acquisition terminal
Histogram is to parallel.
In some embodiments of the utility model, first linear light source and second linear light source are "-" type
Laser line generator or array light source.
The technical solution of the utility model includes at least one by using two groups of mutually independent linear light sources, every group of linear light source
A linear light source, each linear light source can be controlled separately brightness and switch, can be according to the not people having the same aspiration and interest of testee surface reflection
The brightness of whole difference linear light source, guarantees optimal test effect；By using multiple linear light sources, the position of each linear light source
It is separately provided, so that the light source surface of light source constituted of each linear light source projection and the optical axis of Image Acquisition terminal have centainly in advance
If angle, avoid parallel or coplanar with the optical axis of Image Acquisition terminal using surface of light source caused by a linear light source
Situation.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, the structure that can also be shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the structural schematic diagram of contour outline measuring set first embodiment of the utility model based on linear light source；
Fig. 2 is the state matters figure that the first linear light source and the second linear light source are incident upon square hole workpiece；
Fig. 3 is the structural schematic diagram of contour outline measuring set second embodiment of the utility model based on linear light source；
Fig. 4 is the status diagram that the first linear light source and the second linear light source are incident upon mobile phone shell；
The utility model aim is realized, the embodiments will be further described with reference to the accompanying drawings for functional characteristics and advantage.
Specific embodiment
The utility model proposes a kind of contour outline measuring sets based on linear light source.
Referring to Fig.1 or Fig. 3, Fig. 1 be contour outline measuring set first embodiment of the utility model based on linear light source structure
Schematic diagram, Fig. 3 are the structural schematic diagram of contour outline measuring set second embodiment of the utility model based on linear light source.
As shown in Fig. 1 or Fig. 3, in the utility model embodiment, being somebody's turn to do the contour outline measuring set based on linear light source includes: to carry
Object platform 400, at least one first linear light source 210, at least one second linear light source 220, at Image Acquisition terminal 100 and control
Manage terminal 300.Wherein, article carrying platform 400 is equipped with measured zone, and testee is placed in the center of measured zone.First
Linear light source 210 is used to project first light source line 212 to testee, and the second linear light source 220 is used for testee projection second
Light source line 222, second light source line 222 intersect with first light source line 212, and the crosspoint formed is incident upon on testee.Figure
As acquisition terminal 100 is used to acquire the first linear light source 210 and the second linear light source 220 is incident upon projected image on testee,
And the optical axis of Image Acquisition terminal 100 passes through the center of measured zone.First linear light source 210 and Image Acquisition terminal 100
Optical axis between have the first predetermined angle so that the first linear light source 210 projection light source line constitute surface of light source 211 and image
The optical axis of acquisition terminal 100 forms default angle α.Have the between second linear light source 220 and the optical axis of Image Acquisition terminal 100
Two predetermined angles, so that the light of light source the line surface of light source 221 constituted and Image Acquisition terminal 100 of the second linear light source 220 projection
Axis forms default angle β.Processing terminal 300 is controlled to be used for according to the first linear light source 210 and the second linear light source 220 and Image Acquisition
The positional relationship of terminal 100 calculates the two and three dimensions profile of object under test.
Wherein, the first linear light source 210 is arranged along the direction of second light source line 222, and the second linear light source 220 is along first light source line
212 direction arrangement, may make up the light source line of equidistant arrangement by the first linear light source and the second linear light source of regularly arranged setting,
In order to the profile for the projected image progress object under test entirety that the later period is constituted according to these light source lines.
The technical solution of the utility model includes at least one by using two groups of mutually independent linear light sources, every group of linear light source
A linear light source, each linear light source can be controlled separately brightness and switch, can be according to the not people having the same aspiration and interest of testee surface reflection
The brightness of whole difference linear light source, guarantees optimal test effect；By using multiple linear light sources, the position of each linear light source
It is separately provided, so that the light source surface of light source constituted of each linear light source projection and the optical axis of Image Acquisition terminal 100 have one
Fixed preset angle, avoid using surface of light source caused by a linear light source it is parallel with the optical axis of Image Acquisition terminal 100 or
The coplanar situation of person.
In some embodiments, the first predetermined angle is between 0 °~80 °, i.e., default angle α is between 0 °~80 °；
Similarly, the first predetermined angle is between 0 °~80 °, i.e., default angle β is between 0 °~80 °.First linear light source 210 and second
Linear light source 220 is mutually indepedent, and the angle between the two and Image Acquisition terminal 100 can be adjusted respectively, and will not be influenced each other,
Therefore angular adjustment is more flexible, range is wider.
In some embodiments, the perpendicular relationship of optical axis Yu article carrying platform 400 of Image Acquisition terminal 100, also, will
The setting of first linear light source is arranged in 100 directly to the left of Image Acquisition terminal or directly to the right, the second linear light source 220 in Image Acquisition
The positive front side of terminal 100 or positive rear side, so that the direction of the first light source line 212 of the first linear light source 210 projection and Image Acquisition
The picture level direction of terminal 100 is consistent, and the direction of the second light source line 222 of the second linear light source 220 projection and Image Acquisition are whole
The picture vertical direction at end 100 is consistent.First light source line 212 is adopted with second light source line 222 in Image Acquisition terminal 100 as a result,
Perpendicular intersection in the projected image of collection, and it is consistent with the horizontal and vertical direction of projected image, it is tested convenient for quick obtaining
The profile of object laterally and longitudinally both direction, and laterally and longitudinally both direction keeps the same scanning effect, in this way generation
Error of the contour images on laterally and longitudinally it is small.
In some embodiments, the first linear light source 210 and the second linear light source 220 can using "-" type laser line generator or
Array light source.
To further understand the utility model, it is specifically real that the utility model is further elaborated with two embodiments below
Apply mode.
As shown in Figs. 1-2, in the first embodiment of the utility model, testee is square hole workpiece 501, the workpiece
501 are placed on the measured zone of article carrying platform 400.Image Acquisition terminal 100 is CCD camera, and camera optical axis is perpendicular to loading
Platform 400, and pass through 501 center of workpiece and measured zone center.Controlling processing terminal 300 is with image procossing and data meter
Calculate the computer of analytic function.The quantity of first linear light source 210 and the second linear light source 220 is one, and the first linear light source
The light source line surface of light source constituted of 210 projections and the default angle α of camera optical axis are 30 °, the light source of the second linear light source 220 projection
The default angle β of surface of light source and camera optical axis that line is constituted is 30 °.Meanwhile first linear light source 210 be arranged in article carrying platform 400
Left side above, projection first light source line 212 direction it is consistent with the horizontal direction of article carrying platform 400；Second linear light source
220 are arranged in the lower upper side of article carrying platform 400, and the direction of the second light source line 222 of projection is vertical with article carrying platform 400
Direction is consistent.
After CCD camera, the first linear light source 210 and the second linear light source 220 are fixed according to above-mentioned relative positional relationship, to
501 projection source line of square hole workpiece, since square hole workpiece 501 has hole characteristic, the light source line being incident upon on square hole workpiece
It can be broken, the projected image being made up of the light source line that CCD camera absorbs these fractures, by the first linear light source 210 and the
The positional relationship and projected image of two linear light sources 220 and CCD camera are sent to control processing terminal 300, eventually by control processing
Position and camera first linear light source 210 and second linear light source of the end 300 according to first light source line 212 and second light source line 222
220 with the default angle of CCD camera optical axis, square hole workpiece 501 is calculated according to triangulation in horizontal and vertical two sides
Upward height, to calculate the three-dimensional feature of square hole workpiece 501.
As shown in Figure 3-4, in the second embodiment of the utility model, testee is mobile phone shell 502, which places
In the measured zone of article carrying platform 400.Image Acquisition terminal 100 is CCD camera, camera optical axis perpendicular to article carrying platform 400,
And pass through 502 center of mobile phone shell and measured zone center.Controlling processing terminal 300 is to calculate analysis with image procossing and data
The computer of function.The quantity of first linear light source 210 is two, and two the first linear light sources 210 are along the direction of second light source line 222
Arrangement, and the light source line surface of light source 211 constituted of each first linear light source 210 projection and the default angle α of camera optical axis are
30°.The quantity of second linear light source 220 is three, and three the first linear light sources 210 are arranged along the direction of first light source line 212, and every
The default angle α of surface of light source 221 and camera optical axis that the light source line that a second linear light source 220 projects is constituted is 30 °.When first
Linear light source 210 and the second linear light source 220 by acquired projections image and are sent to after object under test projection source line by CCD camera
Control processing terminal 300 is given, controls processing terminal 300 according to projected image and the first linear light source 210 and the second linear light source 220
Relative positional relationship calculate the three-D profile of mobile phone shell 502.
The above is only the preferred embodiment of the present invention, and therefore it does not limit the scope of the patent of the utility model,
Under all utility models in the utility model are conceived, equivalent structure made based on the specification and figures of the utility model
Transformation, or directly/be used in other related technical areas indirectly and be included in the scope of patent protection of the utility model.
Claims (5)
1. a kind of contour outline measuring set based on linear light source characterized by comprising
Article carrying platform, which is provided with measured zone, and testee is placed in the center of the measured zone；
At least one first linear light source, for projecting first light source line to testee；
At least one second linear light source, for projecting second light source line, the second light source line and first light to testee
Source line intersects and the crosspoint formed is incident upon in the measured zone；And first linear light source is along the side of second light source line
To arrangement, second linear light source is arranged along the direction of first light source line；
Image Acquisition terminal, for acquiring first linear light source and second linear light source is incident upon projection on testee
Image；The optical axis of described image acquisition terminal passes through the center of the measured zone；And first linear light source and institute
Stating has the first predetermined angle, the light of second linear light source and described image acquisition terminal between the optical axis of Image Acquisition terminal
There is the second predetermined angle between axis；
Processing terminal is controlled, for closing according to the position of first linear light source and the second linear light source and described image acquisition terminal
System, calculates the three-D profile of object under test.
2. as described in claim 1 based on the contour outline measuring set of linear light source, which is characterized in that first predetermined angle exists
Between 0 °~80 °.
3. as described in claim 1 based on the contour outline measuring set of linear light source, which is characterized in that second predetermined angle exists
Between 0 °~80 °.
4. as described in claim 1 based on the contour outline measuring set of linear light source, which is characterized in that the First Line light source projects
First light source line it is parallel with the horizontal direction of described image acquisition terminal, the second light source line of second linear light source projection
It is parallel with the vertical direction of described image acquisition terminal.
5. the contour outline measuring set based on linear light source as described in claim 1-4 any one, which is characterized in that described first
Linear light source and second linear light source are "-" type laser line generator or array light source.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920044392.XU CN209147948U (en) | 2019-01-10 | 2019-01-10 | Contour outline measuring set based on linear light source |
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| CN201920044392.XU CN209147948U (en) | 2019-01-10 | 2019-01-10 | Contour outline measuring set based on linear light source |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109520441A (en) * | 2019-01-10 | 2019-03-26 | 英特维科技(深圳)有限公司 | Contour outline measuring set and its contour measuring method based on line laser |
| CN113916156A (en) * | 2021-12-13 | 2022-01-11 | 英特维科技(深圳)有限公司 | High-speed high-precision three-dimensional detection system and method |
| CN114543706A (en) * | 2022-02-28 | 2022-05-27 | 徐亦新 | Differential light line-cutting and profile-scanning technique based on incoherent light source multi-angle projection |
-
2019
- 2019-01-10 CN CN201920044392.XU patent/CN209147948U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109520441A (en) * | 2019-01-10 | 2019-03-26 | 英特维科技(深圳)有限公司 | Contour outline measuring set and its contour measuring method based on line laser |
| CN113916156A (en) * | 2021-12-13 | 2022-01-11 | 英特维科技(深圳)有限公司 | High-speed high-precision three-dimensional detection system and method |
| CN114543706A (en) * | 2022-02-28 | 2022-05-27 | 徐亦新 | Differential light line-cutting and profile-scanning technique based on incoherent light source multi-angle projection |
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