CN1936497A - Outline measurement projector with picture treatment system - Google Patents
Outline measurement projector with picture treatment system Download PDFInfo
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- CN1936497A CN1936497A CN 200610069323 CN200610069323A CN1936497A CN 1936497 A CN1936497 A CN 1936497A CN 200610069323 CN200610069323 CN 200610069323 CN 200610069323 A CN200610069323 A CN 200610069323A CN 1936497 A CN1936497 A CN 1936497A
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Abstract
This invention provides a profile measurement projector with an image process system including a transmission light source, a measurement platform, an amplified objective, a reflector set of plane mirror and a ground glass screen characterizing that a light splitting device is mounted at the back of the amplified objective, a set composed of a convex and a concave mirror and CCD camera are set at a side of the splitting device, the optical path emitted by the transmission light source arrives at the splitting device via the amplified objective, the transmission path of the splitting device arrives at the ground glass screen via the reflection mirror set, the reflection path of the splitting device arrives at the induced element side of the CCD camera via the set composed of the convex and concave mirror, the CCD camera is connected to the computer including image collection, edge identification and profile test program.
Description
Technical field
The present invention relates to the detecting instrument technical field, is the inspection machine of workpiece in the production run, is a kind of outline measurement projector with image processing system specifically.
Background technology
The quality inspection of workpiece has several different methods, and the quality of erose workpiece adopts the method for profile comparison to check usually, and profile projector has had the history of last 100 years as profile comparison instrument.The ultimate principle of profile projector is: by enlarging objective with the profile of testee accurately enlarging projection to the frosted glass screen, it is right to carry out overlap ratio according to the profile drawing of the measured piece after the same amplification accurate in scale and the image on the frosted glass screen again, to determine to survey the crudy of part profile.
Beginning, this relatively is manually, along with the development of modern physics and photoelectric technology, has occurred based on the technical numerical value light of optoelectronic induction coral technology, and has been applied on the processing equipment soon.Numerical value light coral is converted to electric impulse signal with mechanical shift, the length that each pulse is corresponding certain.Image to workpiece on the frosted glass screen scans in this way, again by computing machine and suitable numerical value process software, the coordinate of the point of profile on the survey part image that is obtained is reduced into the geometric element of profile, makes profile projector become outline measurement projector.
The key of outline measurement projector is a Boundary Recognition, gets a stage manually seeking the limit, be on the frosted glass with screen only cross delineation line (cross) as object of reference.The center (right-angled intersection point) of cross is moved to the edge of aiming at contour image, measure the coordinate of this point then.This artificial observational error of point mode of getting is bigger, can not be used in precision measurement.
The limit technology of seeking automatically that recent two decades grows up has remedied the deficiency of manually getting a little, and makes profile projector enter the numerical control stage.Automatically seek the limit technology and be based on the photoelectric conversion technique, light activated element is aimed at and is got a position, and monitors on the zonule power of the luminous flux of (aperture or a section light transmitting fiber cross section on).When a border segment when this zonule, the luminous flux in this zonule change (diminishing gradually).When luminous flux is little during to setting value, then the Boundary Recognition device is thought and is frontier point herein, and sends pulse signal notice digital readout system automatically and get a little.Thisly get point mode to have got rid of artificial knowledge poor, thereby have certain repeatability.Yet light activated element must have certain luminous flux to respond to, and therefore, the zone that it monitored can not be infinitely small, generally at two to three millimeters scope (hole diameter or light transmitting fiber diameter).In addition, the border enters the change that this zone all can cause identical luminous flux from all directions.Therefore, the value of the luminous flux of She Dinging and be not suitable for other direction promptly will produce a bigger deviation of getting on other direction in one direction.
In addition, the installation site of Boundary Recognition device has influenced the accuracy of measuring to a certain extent: owing to the sensing element (normally light transmitting fiber) of having no way of installing and fixing on the frosted glass in the Boundary Recognition device, therefore, must fix glass fibre by a organic glass that is fixed on the frosted glass metal rotating frame, Here it is outer rim circle recognizer across screen diameter.A little less than light transmitting fiber is highly brittle, for avoiding fractureing, fibre-optic end must be wrapped up with metal, thereby increase the straight warp in end, to such an extent as under the situation of little border segment, often can't correctly determine to get tram a little.In addition, screen center is the intersection of cross delineation line, and also light tight herein, the Boundary Recognition device is got less than point.For avoiding herein, glass fibre must be put as on the position of departing from the cross center.So just caused with the Boundary Recognition device and got a little and the deviation (2 coordinate figure is unequal) of getting with the cross center a little, thereby increased the difficulty of measuring, caused bigger measured deviation.In addition, outer rim circle recognizer is because its sensitivity speck is installed in the outside of frosted glass screen, therefore, very easily be subjected to the influence of ambient light photograph, for example: the irradiation of sunlight direct projection and houselights etc. all may be directed at the additional measured deviation and the nonrepeatability of measurement result.Most in the world now instrument manufacturers has only grasped the technology of outer rim circle recognizer.
Interior rim circle recognizer is that light path is divided into two.One the tunnel will survey the part contour image is projected on the frosted glass screen, and another road then will be surveyed on the light-sensitive surface that the part influencing profiles is projected to light activated element by the beam split eyeglass.Because interior rim circle recognizer is installed among the light path, therefore, has fundamentally got rid of the influence of ambient light photograph, has guaranteed the repeatability of measurement result.Carry out on a zonule but Boundary Recognition remains, but not therefore the induction of point truly, still can not reach very high precision.In addition, because the effect of beam split, measuring with observing is to carry out on different planes, and the centering at Boundary Recognition device and frosted glass screen cross center be by the people feel carry out, therefore, still exist little deviation between 2, thereby the correctness of a position is got in influence, makes troubles to measurement.
Summary of the invention
The objective of the invention is the problem that exists at prior art and a kind of outline measurement projector with image processing system is provided, adopt image processing technique that the measured workpiece profile is measured automatically, avoid human error and ambient light to disturb, improve measuring accuracy, simultaneously, easy to use.
The objective of the invention is to realize: a kind of outline measurement projector with image processing system by following technical measures, comprise: transmitted light source, scaffold tower, enlarging objective, plane minute surface reflective mirror group, the frosted glass screen, it is characterized in that: a light-dividing device is installed behind the enlarging objective, arrangement of mirrors and ccd video camera that light-dividing device one side setting is made up of convex lens and concavees lens, the light path of transmitted light source emission arrives light-dividing device behind enlarging objective, the transmitted light path of light-dividing device arrives the frosted glass screen by plane minute surface reflective mirror group, the arrangement of mirrors that the reflected light path of light-dividing device is formed via convex lens and concavees lens arrives on the sensing element face of ccd video camera, ccd video camera is connected to computing machine, and image acquisition and Boundary Recognition are arranged in the computing machine, the profile measurement program.
Described light-dividing device is that single face is coated with the flat-plate lens of semi-transparent film or one by two bonding square lens that form of triangular prism, and is coated with semi-transparent film on the bonding plane of above-mentioned two triangular prisms.
Spacing between described convex lens and the concavees lens can be regulated.So that the focusing surface of arrangement of mirrors can be positioned on the sensing element face of ccd video camera.
The described transmittance that is plated in the semi-transparent film on the flat-plate lens or forms the semi-transparent film that plates on the two triangular prism bonding planes of square lens is 50%.
Advantage of the present invention and good effect are: when carrying out the giant-screen outline projection, adopt CCD digital camera technology and image processing techniques to the profile measurement that quantizes, having the light-dividing device of semi-transparent film and adjustable convex lens, the concavees lens group of spacing has guaranteed to project one of image on frosted glass screen and the CCD sensitive surface and has made peace accurately, avoided human error and ambient light to disturb the measuring accuracy height.Simultaneously, working service is convenient.
Description of drawings
Fig. 1 is a small-sized horizontal optical path of a kind of outline measurement projector with image processing system of the present invention
The structural representation of embodiment;
Fig. 2 is the planar lens synoptic diagram that has translucent plated film of a kind of outline measurement projector with image processing system of the present invention;
Fig. 3 is the square lens synoptic diagram that has translucent plated film of a kind of outline measurement projector with image processing system of the present invention;
Fig. 4 is the configuration diagram of the small-sized vertical optical path embodiment of a kind of outline measurement projector with image processing system of the present invention;
Fig. 5 is a kind of with type inclined-plane vertical optical path among the outline measurement projector of image processing system for the present invention
The configuration diagram of embodiment.
Embodiment
Referring to accompanying drawing 1, a kind of outline measurement projector with image processing system, comprise: transmitted light source 1, scaffold tower 2, enlarging objective 3, plane minute surface reflective mirror group 5, frosted glass screen 6, one light-dividing device 7 is installed, arrangement of mirrors and ccd video camera 10 that light-dividing device 7 one side settings are made up of convex lens 8 and concavees lens 9 behind enlarging objective 3.As Fig. 2, shown in Figure 3, light-dividing device 7 is flat-plate lens 15 or bonding square lens 13 that form of triangular prism that are coated with semi-transparent film 14 by two middle bonding planes that single face is coated with semi-transparent film 14.The transmittance of semi-transparent film 14 is 50%, and when light arrived semi-transparent film 14,50% light intensity was propagated along former direction like this, will be reflected by semi-transparent film 14 and come and remain 50% light intensity.
To be placed on scaffold tower 2 by side workpiece 12, transmitted light source 1 is radiated at by on the side workpiece 12, light path 4 behind enlarging objective 3 arrives the semi-transparent film 14 of flat-plate lens 15, semi-transparent film 14 is divided into transmitted light path 4-1 and reflected light path 4-2 two parts with light path 4, transmitted light path 4-1 reaches frosted glass screen 6 by plane minute surface reflective mirror group 5, reflected light path 4-2 planoconvex lens 8 and concavees lens 9 arrive on the sensing element face of ccd video camera 10, spacing between convex lens 8 and the concavees lens 9 can be regulated, thereby has guaranteed to arrive the image definition on the ccd video camera 10 sensing element faces.
The outer dress that outline projection measuring method provided by the present invention is different from the past fully or the method for interior rim circle recognizer, its successful condition precedent is that the image that projects on the ccd video camera sensitive surface must be clear and undistorted, and light path system provided by the present invention has guaranteed this point effectively.
In actual use, can be according to the light path system of testee shape and size employing diverse location, small-sized vertical optical path profile projector light path as shown in Figure 4; Medium-sized inclined-plane vertical optical path profile projector light path shown in Figure 5, or the like.Though these light path system form differences have identical structure and principle of work.
Certainly, above-mentioned explanation is not to be limitation of the present invention, and the present invention also is not limited to above-mentioned giving an example; those skilled in the art; in essential scope of the present invention, the variation of making, remodeling, interpolation or replacement also should belong to protection scope of the present invention.
Claims (5)
1, a kind of outline measurement projector with image processing system, comprise: transmitted light source (1), scaffold tower (2), enlarging objective (3), plane minute surface reflective mirror group (5), frosted glass screen (6), it is characterized in that: a light-dividing device (7) is installed behind the enlarging objective (3), arrangement of mirrors and ccd video camera (10) that light-dividing device 7 one side settings are made up of convex lens (8) and concavees lens (9), the light path (4) of transmitted light source (1) emission arrives light-dividing device (7) behind enlarging objective (3), the transmitted light path (4-1) of light-dividing device (7) arrives frosted glass screen (6) by plane minute surface reflective mirror group (5), the arrangement of mirrors that the reflected light path (4-2) of light-dividing device (7) is formed via convex lens (8) and concavees lens (9) arrives on the sensing element face of ccd video camera (10), ccd video camera (10) is connected to computing machine (11), and computing machine has image acquisition and Boundary Recognition in (11), the profile measurement program.
2, according to the outline measurement projector of the described band image processing system of claim 1, it is characterized in that: described light-dividing device (7) be the single face flat-plate lens (12) that is coated with semi-transparent film (14) or one by two bonding square lens (13) that form of triangular prism, and be coated with semi-transparent film (14) on the bonding plane of above-mentioned two triangular prisms.
3, according to the outline measurement projector of claim 1 or 2 described band image processing systems, it is characterized in that: the spacing between described convex lens (8) and the concavees lens (9) can be regulated.
4, according to the outline measurement projector of the described band image processing system of claim 2, it is characterized in that: the described transmittance that is plated in the semi-transparent film (14) on the flat-plate lens (12) or forms the semi-transparent film (14) that plates on the two triangular prism bonding planes of square lens (13) is 50%.
5, according to the outline measurement projector of the described band image processing system of claim 3, it is characterized in that: the described transmittance that is plated in the semi-transparent film (14) on the flat-plate lens (12) or forms the semi-transparent film (14) that plates on the two triangular prism bonding planes of square lens (13) is 50%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610069323 CN1936497A (en) | 2006-10-08 | 2006-10-08 | Outline measurement projector with picture treatment system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610069323 CN1936497A (en) | 2006-10-08 | 2006-10-08 | Outline measurement projector with picture treatment system |
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| CN1936497A true CN1936497A (en) | 2007-03-28 |
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| CN 200610069323 Pending CN1936497A (en) | 2006-10-08 | 2006-10-08 | Outline measurement projector with picture treatment system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101771781A (en) * | 2009-12-31 | 2010-07-07 | 上海量科电子科技有限公司 | White board shoot and record and output system realized by shoot |
| CN102752484A (en) * | 2012-06-25 | 2012-10-24 | 清华大学 | Fast non-global uniform image shaking blur removal algorithm and system thereof |
| CN104504945A (en) * | 2015-01-12 | 2015-04-08 | 鲁杨 | Physics teaching projector |
| CN105928459A (en) * | 2016-06-20 | 2016-09-07 | 贵阳新天光电科技有限公司 | Projector projection imaging and video image synchronization display and measurement method and device |
-
2006
- 2006-10-08 CN CN 200610069323 patent/CN1936497A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101771781A (en) * | 2009-12-31 | 2010-07-07 | 上海量科电子科技有限公司 | White board shoot and record and output system realized by shoot |
| CN101771781B (en) * | 2009-12-31 | 2015-08-05 | 马宇尘 | The blank utilizing shooting to realize is shot with video-corder and output system |
| CN102752484A (en) * | 2012-06-25 | 2012-10-24 | 清华大学 | Fast non-global uniform image shaking blur removal algorithm and system thereof |
| CN102752484B (en) * | 2012-06-25 | 2015-05-20 | 清华大学 | Fast non-global uniform image shaking blur removal algorithm and system thereof |
| CN104504945A (en) * | 2015-01-12 | 2015-04-08 | 鲁杨 | Physics teaching projector |
| CN105928459A (en) * | 2016-06-20 | 2016-09-07 | 贵阳新天光电科技有限公司 | Projector projection imaging and video image synchronization display and measurement method and device |
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