CN107063085A - A kind of automobile lamp mask dimension measuring device based on light scanning lens - Google Patents
A kind of automobile lamp mask dimension measuring device based on light scanning lens Download PDFInfo
- Publication number
- CN107063085A CN107063085A CN201710105835.7A CN201710105835A CN107063085A CN 107063085 A CN107063085 A CN 107063085A CN 201710105835 A CN201710105835 A CN 201710105835A CN 107063085 A CN107063085 A CN 107063085A
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- Prior art keywords
- laser
- car light
- scanning lens
- mask
- light
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Classifications
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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
- G01B11/002—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention provides a kind of contactless car light mask measurement apparatus based on light scanning lens, it is characterised in that：Pillar 1 is fixed including the six roots of sensation, the six roots of sensation is fixed pillar and is uniformly distributed with regular hexagon, regular hexagon center and test desk center superposition, vertically moving regulation crossbeam 2 is installed on every pillar, one laser 3, a miniscanning mirror 4 and two CCD cameras 5 are installed on every crossbeam 2, the center line of light scanning lens 4 falls in the centre position of tested car light mask, digital micro scanning mirror and the symmetrical placement in laser opposite legs center on every crossbeam, CCD camera 5 or so are placed in miniscanning mirror and laser outside with certain degree respectively.Compared with contact measuring apparatus, the present invention has the features such as easy to operate, precision is high, can meet the size detection requirement of all kinds automobile lamp mask.
Description
Technical field
It is more particularly to a kind of to be based on light the present invention relates to a kind of Non-contact vehicle car light mask three-dimensional dimension measurement apparatus
The contactless car light mask size detection means of scanning mirror is learned, the invention belongs to field of measuring technique.
Background technology
Car light is the instrument of car lighting, is played an important role during vehicle safe driving.Car light mask size is examined
Survey is a main contents of car light quality control, as car replacement speed is accelerated, and develops new car light mask size inspection
Survey method turns into detection field study hotspot to substitute contact type measurement.It can be realized soon using optical three-dimensional scanning measurement apparatus
Speed, accurate detection, have become the development trend of auto parts and components external form detection.
Current car light mask size detection detects car light mask surface quality using three-coordinates measuring machine, to examine car light to fill
With precision.Survey crew need to select finite point on car light mask rim partial points and mask to measure, it is impossible to examine car light face
Cover integral face molded dimension.When carrying out contact type measurement, first have to smooth benchmark bus, it is several for what can not directly be measured in visual field
What element：Such as center of circle, midpoint, intersection point, center line and its mutual distance, shape and position relationship are, it is necessary to carry out a series of multiple
Miscellaneous calculating can just be obtained.To improve measurement accuracy, car light manufactory utilizes the cubing matched with car light profile to measure car light
Size, each cubing can only examine the car light of correspondence model, and the exploitation cubing R＆D cycle is long, and cost is high.Compared to contact
E measurement technology and utilization cubing technology, non-contact 3-D scanning system complete the survey of car light mask surface using light scanning lens
Amount, the coordinate value for obtaining tested surface cover size, accuracy high the features such as short with sweep time are calculated via computer.
Non-contact three-dimensional car light mask measurement apparatus proposed by the present invention is connect based on laser measuring technique with non-
Tactile, adaptive the features such as, high resolution detection can be carried out to car light mask.The sweeping for realizing scanning mirror by transmission system is transported
Dynamic, the reflection line position of scanning mirror constantly changes, and changes the reflection direction of incident light, realizes and car light mask is scanned.With
Photoelectric device and laser technology reaches its maturity, develop contactless car light mask size measuring system and be possibly realized.
Measurement apparatus proposed by the present invention uses automatically scanning and identification method, realizes and the automatically scanning of car light mask is examined
Survey.Car light to be measured is scanned from multiple visual angles, scan data fusion is completed.Whole scanning process full automation, without user
Intervene, provided the user a kind of detection means easy to use, simple to operate.Car light mask is scanned to press by left-to-right order
Record data, can make car light mask profile and be shown respectively with modes such as curved surface, point cloud, grids.
System configuration computer aided measurement operating system, can accurately calculate the D coordinates value of car light mask, preserve
Test result and generation test report.In measurement process, the coordinate of scanning element is shown in real time on computers, and can complete right angle
Changed at any time between coordinate and polar coordinates, actual measurement mask data and car light mask gross data are contrasted, testing result is obtained.
All measurement results, result of calculation and car light mask contour pattern are preserved in a computer with document form, can be adjusted at any time
With, editor and print.The three-dimensional coordinate measurement operating system of appliance computer subsidiary, completes image processing and coordinate in real time
Calculate, it is adaptable to the non-cpntact measurement of various car light mask sizes.
The content of the invention
It is an object of the invention to provide a kind of accuracy of detection is high, cost is low and is adapted to the inspection of all kinds car light mask size
Device is surveyed, so that the measurement point for solving contact measuring method is limited, environmental requirement is strict and there are problems that.
To solve the above problems, technical scheme provides a kind of contactless car light based on light scanning lens
Mask size detection means, it is characterised in that：Including fixing pillar, regular hexagon center with the equally distributed six roots of sensation of regular hexagon
With the center superposition of test desk, one laser of installation on vertically moving crossbeam, every crossbeam is installed on every pillar
Device, a miniscanning mirror and two CCD cameras, the center line of micro scanning mirror fall in the center of test desk, every crossbeam
On digital micro scanning mirror and laser opposite legs center it is symmetrical place, two CCD cameras on crossbeam or so are respectively
The outside of miniscanning mirror and laser is placed in certain degree.
The present invention is compared with contact type measurement technology, with following significant advantage：Using the survey based on optical micro-scanning mirror
Array is measured, the sweeping for realizing micro scanning mirror by stepping motor system is acted, and then changes laser emitting direction, is realized to mask
Sector scanning.With small volume, precision is high and can realize the features such as continuously measuring car light mask entirety.Tester will be to be measured
Car light mask is placed on instrument designated area, only requires that car light mask and turntable keep being relatively fixed in scanning process.
Easy to operate, precision of the invention is high, can meet various automobile lamp mask measurement requests.
Brief description of the drawings
The structure for the contactless car light mask scanner based on digital micro scanning mirror that Fig. 1 provides for the present invention is overlooked
Figure.
Fig. 2 is that CCD camera of the present invention covers schematic diagram to the visual field of car light mask.
Fig. 3 covers for the laser scanning line that the digital micro scanning mirror that the present invention is used is reflected to the visual field of car light mask to be shown
Figure.
Fig. 4 is stepper motor driven micro scanning mirror schematic diagram of the present invention.
The electrical connection for the contactless car light mask scanner based on digital micro scanning mirror that Fig. 5 provides for the present invention
Figure.The automobile lamp mask dimension measuring device structure diagram that Fig. 6 provides for the present invention.
Embodiment
To make the present invention implement to become apparent, accompanying drawing is coordinated to be described in detail below：
As shown in Figure 1 to Figure 3, a kind of contactless car light mask size detection dress based on light scanning lens that the present invention is provided
Put, mainly include the six roots of sensation and fix pillar 1, crossbeam 2, six laser line generators 3, six light scanning lens 4,12 CCD cameras
5, a test desk 6.
The six roots of sensation is fixed pillar and is uniformly distributed with regular hexagon, regular hexagon center and test desk center superposition, in every branch
It is provided with post on moveable crossbeam 2, crossbeam 2 and a laser 3, a miniscanning mirror 4 and two CCD cameras 5 is installed,
The center line of light scanning lens 4 falls light scanning lens and laser on the centre position of tested car light mask, every crossbeam
Opposite legs center is symmetrical to place, and CCD camera 5 or so is placed in the outer of miniscanning mirror and laser with certain degree respectively
Side.
The action of laser sweeping is realized that the deflection angle ranges of light scanning lens 4 are ± 25 ° by light scanning lens 4 in the present invention,
The range of deflection angles of the laser beam reflected is ± 50 °.If the length of tested car light mask is L, because light scanning lens 4 are anti-
The maximum subtended angle of the laser beam of injection is 50 °, in order to ensure that light scanning lens 4 can complete scan car light mask, quilt from top to bottom
The distance between measuring car lamp mask and pillar X>L/2tan25°.
The initial deflection angle of light scanning lens 4 is identical in the present invention, is in 30 ° with horizontal direction, from six not Tongfangs
To laser line generator 3 produce six bunch laser, reflexing to tested car light mask surface via scanning mirror forms the laser ring of light,
It is located at the image that the CCD camera 5 on six roots of sensation pillar obtains the laser ring of light from different perspectives respectively.By changing light scanning lens 4
Minute surface sweeping angle 14, and then change the reflection angle 15 of incident line laser successively.When the pivot angle of light scanning lens 4 reach it is specified
Value, triggers a laser line generator 3, the laser scanning of a position is realized, in once complete laser scanning car light mask
During, it is fixed that all time for exposure of CCD camera 5 are all higher than CCD camera 5 in sweep time, scanning process.Measurement dress
Put middle CCD camera 5 and 13 are covered to the visual field of car light mask as shown in Fig. 2 laser scanning line covers 15 to the visual field of car light mask
As shown in Figure 3.The center curve of the laser ring of light is extracted using image processing program, with reference to the calibrating template of CCD camera 5, foundation
Triangulation, rebuilds car light mask surface geometry information, calculates the three-dimensional coordinate of measurement point.
The structure of optical scanner 4 employed in the present invention is as shown in Figure 4.It is main by power transmission shaft 7, oscillating structural member 8, reflection
Mirror 9, stepper motor 10 and pedestal 11 are constituted.Stepper motor 10 transmits motion to oscillating structural member 8, speculum 9 by power transmission shaft 7
It is fixed on oscillating structural member 8, speculum 9 is rotated and rotated with oscillating structural member 8.Rotated by Pulse Width Control stepper motor 10, it is real
The existing rotational angle of power transmission shaft 7, that is, change the pivot angle size of oscillating structural member 8, so that control the deflection angle of oscillating structural member 8, i.e., it is anti-
Penetrate the deflection angle of mirror 9.
With reference to Fig. 5, car light mask measurement apparatus provided by the present invention starts control unit 13 by computer 12 and and guided
It completes every control work, and the angle that the control stepper motor 10 of control unit 13 is rotated realizes that optics is swept by transmission link
The sweeping of mirror 4 is retouched to laser line generator 3 is triggered during specified angle, to realize the laser scanning of a position.Laser scanning linear light
Signal is sent to image pick-up card via CCD camera 5, and image pick-up card is back to computer 12 by image is formed.
The present invention uses optical triangulation, laser center line is extracted using edge detecting technology, with reference to CCD camera 5
Calibrating template reconstruct car light mask surface profile, pass through to calculate and obtain car light mask and measure point coordinates.By to car light mask
Laser measurement, quickly generates the coordinate data on car light mask surface, overcomes the data collection point of contact measurement method presence
It is limited, the shortcomings of calibration process is cumbersome, measurement apparatus that the present invention is provided is easy to operate, time of measuring is short, precision is high, can meet
The detection of all kinds car light mask size is required.
Claims (3)
1. a kind of contactless car light mask size detection means based on light scanning lens, it is characterised in that：It is solid including the six roots of sensation
Determine pillar (1), the six roots of sensation is fixed pillar and is uniformly distributed with regular hexagon, regular hexagon center and test desk center superposition, at every
Vertically moving regulation crossbeam (2) is installed on pillar, install on every crossbeam (2) laser (3), one miniature sweep
Mirror (4) and two CCD cameras (5) are retouched, the center line of light scanning lens (4) falls the centre position of tested car light mask, every
Digital micro scanning mirror and the symmetrical placement in laser opposite legs center on crossbeam, CCD camera (5) left and right is respectively with specific
Angle is placed in the outside of miniscanning mirror and laser.
2. a kind of contactless car light mask measurement apparatus based on light scanning lens as claimed in claim 1, its feature exists
In：Sweeping occurs for driving stepper motor light scanning lens (4), and sweeping reaches that specified angle triggers a laser line generator (3),
Six different directions laser line generators (3) produce six bunch laser, and laser reflexes to tested car light via light scanning lens (4)
Mask surface forms the laser ring of light, realizes the comprehensive scanning to car light mask.
3. a kind of contactless car light mask measurement apparatus based on light scanning lens as claimed in claim 2, its feature exists
In：The laser ring of light on tested car light mask surface is gathered by CCD camera (5), light scanning lens (4) reach specified angle every time,
Laser line generator (3) is triggered, the scanning of a position is realized, during once complete laser scanning car light mask, institute
It is fixed that some CCD camera (5) time for exposure are all higher than CCD camera (5) in sweep time, scanning process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710105835.7A CN107063085A (en) | 2017-02-27 | 2017-02-27 | A kind of automobile lamp mask dimension measuring device based on light scanning lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710105835.7A CN107063085A (en) | 2017-02-27 | 2017-02-27 | A kind of automobile lamp mask dimension measuring device based on light scanning lens |
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| Publication Number | Publication Date |
|---|---|
| CN107063085A true CN107063085A (en) | 2017-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710105835.7A Pending CN107063085A (en) | 2017-02-27 | 2017-02-27 | A kind of automobile lamp mask dimension measuring device based on light scanning lens |
Country Status (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500951A (en) * | 2019-06-04 | 2019-11-26 | 湘潭大学 | A kind of lamp lens shell sizes detection method based on machine vision |
| CN111971522A (en) * | 2018-03-29 | 2020-11-20 | 特威纳有限公司 | Vehicle detection system |
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| US5256871A (en) * | 1992-12-22 | 1993-10-26 | Emhart Glass Machinery Investments Inc. | Machine for video inspection of glass containers with intersecting light beams |
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| CN204373603U (en) * | 2015-02-02 | 2015-06-03 | 中国石油集团渤海钻探工程有限公司 | Tubing thread pick-up unit |
| CN204461370U (en) * | 2014-12-25 | 2015-07-08 | 重庆奥图亚模型有限公司 | A kind of handheld laser scanner |
| CN204535658U (en) * | 2015-04-03 | 2015-08-05 | 四川辉煌测控设备有限公司 | A kind of high-precision section section bar laser measuring apparatus |
| CN106247979A (en) * | 2016-08-17 | 2016-12-21 | 四川川大智胜软件股份有限公司 | A kind of spatial digitizer based on galvanometer |
| CN206638164U (en) * | 2017-02-27 | 2017-11-14 | 河南理工大学 | A kind of automobile lamp mask dimension measuring device based on light scanning lens |
-
2017
- 2017-02-27 CN CN201710105835.7A patent/CN107063085A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5256871A (en) * | 1992-12-22 | 1993-10-26 | Emhart Glass Machinery Investments Inc. | Machine for video inspection of glass containers with intersecting light beams |
| CN104266586A (en) * | 2014-08-28 | 2015-01-07 | 合肥斯科尔智能科技有限公司 | Photographing and scanning system capable of achieving 360-degree shooting angle |
| CN204461370U (en) * | 2014-12-25 | 2015-07-08 | 重庆奥图亚模型有限公司 | A kind of handheld laser scanner |
| CN204373603U (en) * | 2015-02-02 | 2015-06-03 | 中国石油集团渤海钻探工程有限公司 | Tubing thread pick-up unit |
| CN204535658U (en) * | 2015-04-03 | 2015-08-05 | 四川辉煌测控设备有限公司 | A kind of high-precision section section bar laser measuring apparatus |
| CN106247979A (en) * | 2016-08-17 | 2016-12-21 | 四川川大智胜软件股份有限公司 | A kind of spatial digitizer based on galvanometer |
| CN206638164U (en) * | 2017-02-27 | 2017-11-14 | 河南理工大学 | A kind of automobile lamp mask dimension measuring device based on light scanning lens |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111971522A (en) * | 2018-03-29 | 2020-11-20 | 特威纳有限公司 | Vehicle detection system |
| CN110500951A (en) * | 2019-06-04 | 2019-11-26 | 湘潭大学 | A kind of lamp lens shell sizes detection method based on machine vision |
| CN110500951B (en) * | 2019-06-04 | 2021-03-09 | 湘潭大学 | Car light glass shell size detection method based on machine vision |
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Application publication date: 20170818 |
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