CN2676151Y - Doublesided light knife type three dimensional profile measuring device with adjustable height measurement range - Google Patents
Doublesided light knife type three dimensional profile measuring device with adjustable height measurement range Download PDFInfo
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- CN2676151Y CN2676151Y CN 200320119746 CN200320119746U CN2676151Y CN 2676151 Y CN2676151 Y CN 2676151Y CN 200320119746 CN200320119746 CN 200320119746 CN 200320119746 U CN200320119746 U CN 200320119746U CN 2676151 Y CN2676151 Y CN 2676151Y
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- guide rail
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- measurement range
- adjustable
- height measurement
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Abstract
The utility model is a double-sided light knife type three dimensional profile measuring device with adjustable height measurement range, including a measuring head(1), a two-dimension translation working table (2), a signal processing arrangement (3)and a measuring base (4). Wherein the measuring head(1) is fixed on the two-dimension translation working table (2) which can move in two-dimension direction, the two-dimension translation working table (2) is fixed on the measuring base (4) via a supporting frame (22), and the output end of the measuring head(1)and the input end of the signal processing arrangement (3)are connected. The measuring head(1) comprises lasers (5, 6)and a photographing device (7). For a single photographing device and a bilateral ray knife are adopted to compose the measuring head, the bilateral ray knife is symmetrically provided on two sides of the photographing device, which forms a structure in which the light axis of the photographing device is perpendicular to a measured reference surface. Therefore, the utility model solves the problem of dead corner measuring, and in addition, the utility model can augment the range of measurable surface height by the moving of the measuring head in vertical direction, and the measured range is made to be adjustable.
Description
1, technical field:
The utility model is the adjustable three-dimensional contour outline measuring set of a kind of bilateral finishing tool type height measurement range, belongs to the renovation technique of three-dimensional contour outline measuring set.
2, background technology:
Reverse Engineering Technology is applied to every field more and more widely, and as industries such as mold manufacturing industry, toy industry, footwear industry, auto manufacturing, art industry, engineering in medicine and PRODUCT FORM DESIGN, reverse Engineering Technology is the trend of modern manufacturing industry development.And the key equipment of reverse Engineering Technology is a three-dimensional contour outline measuring set.Measuring three-dimensional profile has mechanical contact and contactless two class methods of photoelectricity, the measurement of Mechanical Contact formula is to adopt mechanical probes to carry out contact point by point scanning on surface to be measured, it has very high requirement to surface to be measured, and measuring speed is extremely slow, the equipment manufacturing cost costliness is so seldom use in reverse-engineering.The photoelectricity non-contact measurement can be surveyed various surfaces, because equipment manufacturing cost is low, is the main mode that present reverse Engineering Technology adopts.The photoelectricity non-contact measurement often has following several method: 1, laser simple scan mensuration.This method adopts the point by point scanning of laser single-point, the measuring accuracy height, but measuring speed is extremely slow.2, laser line scanning mensuration (being called for short the finishing tool method).This method adopts the line sweep mode, the measuring accuracy height, and measuring speed is faster than laser simple scan mensuration, is present the most frequently used method.3, optical grating projection measurement of full field method.It is the fastest that this method is measured measuring speed, but because the limitation of optical imaging system and the complexity of algorithm make that measuring error is bigger when measuring than complex surfaces, the engineering degree of being practical is low.
Because the photoelectricity non-contact measurement must adopt and videotape optical imaging system, and all there is depth of field problem in optical imaging system, make that the height fall can survey the surface must be within the intrinsic field depth of optical imaging system, but therefore limited the measuring height scope on surface.In addition, because the photoelectricity non-contact measurement adopts the ray cast mode, form easily and measure the dead angle, measure the dead angle problem for solving at present, often adopt bilateral twin camera technology, not only there is the matching problem of digraph elephant in this technology, directly influence measuring accuracy, and equipment cost strengthens.
3, summary of the invention:
The purpose of this utility model is to consider the problems referred to above and a kind of measurable range that increases surface elevation is provided, makes the adjustable bilateral finishing tool type three-dimensional contour outline measuring set of measurable range of surface elevation.The utility model has solved measurement dead angle problem, and the cost of equipment is low.
Structural representation of the present utility model as shown in Figure 1, include and comprise measuring head (1), two-dimension translational worktable (2), signal processing apparatus (3), measurement pedestal (4), wherein be fixed on can be on the two-dimension translational worktable (2) that two-dimensional directional moves for measuring head (1), two-dimension translational worktable (2) is fixed on by bracing frame (22) and measures on the pedestal (4), and the output terminal of measuring head (1) is connected with the input end of signal processing apparatus (3).
Above-mentioned measuring head (1) comprises laser instrument (5,6), imaging device (7) and measuring head housing (8), wherein laser instrument (5,6) is symmetrically distributed in the both sides of imaging device (7), the imaging optical axis of imaging device (7) is vertical with tested reference surface, laser instrument (5,6) and imaging device (7) all are fixed in the measuring head housing (8), and laser instrument (5,6) links to each other with Laser Power Devices (9) by cable (23,24) respectively.
Above-mentioned two-dimension translational worktable (2) includes horizontal translation guide rail (10) and vertical translation guide rail (11), horizontal translation guide rail (10) and vertical translation guide rail (11) drive by horizontal translation motor (12) and vertical translation motor (13) respectively, and horizontal translation motor (12) and vertical translation motor (13) are connected with driving governor (14) with cable (21) by cable (20) respectively.
Above-mentioned vertical translation motor (13) is fixed on an end of vertical translation guide rail (11), and measuring head housing (8) is fixed on the vertical translation guide rail (11); Horizontal translation motor (12) is fixed on an end of horizontal translation guide rail (10), and vertical translation guide rail (11) is fixed on the horizontal translation guide rail (10); Horizontal translation guide rail (10) is fixed on by bracing frame (22) and measures on the pedestal (4).
Said signal processing device (3) includes microprocessor (16), image collection card (17), motor-driven interface card (18) composition; Image collection card (17) links to each other with imaging device (7) by video signal cable (19), and motor-driven interface card (18) links to each other with driving governor (14) by cable (15) respectively.
Above-mentioned microprocessor (16) can be microcomputer, also can be single-chip microcomputer.
Above-mentioned imaging device (7) can be digital camera, also can be digital camera.
Above-mentioned horizontal translation motor (12) and vertical translation motor (13) are stepper motor, and driving governor (14) is the stepper drive controller.
Above-mentioned laser instrument (5,6) can be semiconductor laser, also can be gas laser, or is fiber laser.
Above-mentioned laser instrument (5,6) can be respectively single laser instrument, also can be respectively the array of a plurality of laser constitutions.
The utility model is owing to adopt single-camera and two finishing tools are formed measuring heads, and two finishing tool symmetrical placement are in the both sides of imaging device, the structure that the optical axis of camera head is vertical with tested reference surface, and therefore, it has solved the problem at measurement dead angle; In addition, owing to the measuring head in the utility model is placed on the vertical translation guide rail, thus can increase measurable surface elevation scope moving of vertical direction by measuring head, and make its measurement range adjustable.The utility model is that a kind of design is ingenious, simple in structure, function admirable, the convenient and practical adjustable three-dimensional contour outline measuring set of bilateral finishing tool type height measurement range.
4, description of drawings:
Fig. 1 is a structural representation of the present utility model.
5, embodiment:
Embodiment:
Structural representation of the present utility model as shown in Figure 1, include and comprise measuring head (1), two-dimension translational worktable (2), signal processing apparatus (3), measurement pedestal (4), wherein be fixed on can be on the two-dimension translational worktable (2) that two-dimensional directional moves for measuring head (1), two-dimension translational worktable (2) is fixed on by bracing frame (22) and measures on the pedestal (4), and the output terminal of measuring head (1) is connected with the input end of signal processing apparatus (3).
Above-mentioned measuring head (1) comprises laser instrument (5,6), imaging device (7) and measuring head housing (8), wherein laser instrument (5,6) is symmetrically distributed in the both sides of imaging device (7), the imaging optical axis of imaging device (7) is vertical with tested reference surface, laser instrument (5,6) and imaging device (7) all are fixed in the measuring head housing (8), and laser instrument (5,6) links to each other with Laser Power Devices (9) by cable (23,24) respectively.Above-mentioned imaging device (7) can be digital camera, also can be digital camera.In the present embodiment, imaging device (7) is a digital camera.
Above-mentioned laser instrument (5,6) can be semiconductor laser, also can be gas laser, or is fiber laser.In the present embodiment, laser instrument (5,6) adopts semiconductor laser.
Above-mentioned laser instrument (5,6) can be respectively single laser instrument, also can be respectively the array of a plurality of laser constitutions.In the present embodiment, laser instrument (5,6) adopts single laser instrument respectively.
Above-mentioned two-dimension translational worktable (2) includes horizontal translation guide rail (10) and vertical translation guide rail (11), horizontal translation guide rail (10) and vertical translation guide rail (11) drive by horizontal translation motor (12) and vertical translation motor (13) respectively, and horizontal translation motor (12) and vertical translation motor (13) are connected with driving governor (14) with cable (21) by cable (20) respectively.
Above-mentioned vertical translation motor (13) is fixed on an end of vertical translation guide rail (11), and measuring head housing (8) is fixed on the vertical translation guide rail (11); Horizontal translation motor (12) is fixed on an end of horizontal translation guide rail (10), and vertical translation guide rail (11) is fixed on the horizontal translation guide rail (10); Horizontal translation guide rail (10) is fixed on by bracing frame (22) and measures on the pedestal (4).In the present embodiment, horizontal translation motor (12) and vertical translation motor (13) are stepper motor, and respective drive controller (14) is the stepper drive controller.
Said signal processing device (3) includes microprocessor (16), image collection card (17), motor-driven interface card (18) composition; Image collection card (17) links to each other with imaging device (7) by video signal cable (19), and motor-driven interface card (18) links to each other with driving governor (14) by cable (15) respectively.Above-mentioned microprocessor (16) can be microcomputer, also can be single-chip microcomputer.In the present embodiment, microprocessor (16) can be microcomputer.
Measuring three-dimensional profile method of the present utility model adopts triangulation.During the utility model work, as shown in Figure 1, the finishing tool that laser instrument (5,6) produces is radiated at the testee surface, and the imaging optical axis of imaging device (7) and finishing tool keep certain included angle.Camera head (7) is taken the finishing tool line image of finishing tool on the testee surface, can obtain the profile information at finishing tool line place, testee surface.By measuring head (1) translation in the horizontal direction, finishing tool is scanned at whole measured surface, by camera head (7) pickup image, can obtain the three-D profile information on whole testee surface.
In order to obtain the altitude information of presentation surface three-D profile, need carry out precise calibration to measuring system, promptly set up the coordinate Mapping relation between measurement space object coordinates and camera head (7) the imaging target surface pixel.The finishing tool line image on the whole testee surface of camera head (7) picked-up, deposit in the microprocessor (16) by image collection card (17), again by corresponding algorithm, can obtain the space object coordinate figure of measured point, testee surface, thereby can obtain the altitude information of presentation surface three-D profile, according to these altitude informations, microprocessor (16) is by respective algorithms restructural testee surface.
The utility model adopts bilateral finishing tool mode, its objective is to reduce to measure the dead angle, and owing to once take, can obtain two finishing tool lines, and measuring speed has also increased by one times.Simultaneously, bilateral finishing tool mode only needs a video camera, can reduce equipment cost, and the digraph of avoiding the twin camera technology to exist resembles matching problem, improves measuring accuracy.
The utility model adopts the vertically mode of translation of measuring head, but its objective is the scope that will increase the surface measuring height.According to the intrinsic depth of field, finishing tool live width degree of divergence and the measuring accuracy requirement of camera head (7), set a measurable altitude range H in advance
0, to this setting H
0, gamma camera is taken the setting deviation value D that obtains corresponding with it finishing tool line relative datum face
0, deposit in the microprocessor (16).During measurement, video camera is taken the finishing tool line image, can obtain the deviation value D of measured surface finishing tool line relative datum face everywhere.When the measuring height drop surpasses setting value H
0The time, D is greater than D
0, microprocessor (16) can be discerned automatically, and sends instruction, by a driving vertical translation stepper motor (13), makes measuring head (1) move one along vertical translation guide rail (11) and is worth H as can be known
g, make the surf zone that exceeds measurable range adjust to the predefined H of survey
0In the scope, carry out the scanning survey second time.By computerized algorithm, the surf zone that twice scanning survey met the demands combines, and the altitude range that can survey is added grow to H
0+ H
gWhen the measuring height drop surpasses setting value H again
0The time, can be successively traverse measurement head (1) again, the altitude range that can survey is added grows to H
0+ 2H
g, H
0+ 3H
g,---.Adopt bilateral finishing tool single camera, but make this measuring height scope growing method, Project Realization is easier than monochromatic light cutter twin camera mode.
Claims (10)
1, the adjustable three-dimensional contour outline measuring set of a kind of bilateral finishing tool type height measurement range, it is characterized in that including measuring head (1), two-dimension translational worktable (2), signal processing apparatus (3), measure pedestal (4), wherein be fixed on can be on the two-dimension translational worktable (2) that two-dimensional directional moves for measuring head (1), two-dimension translational worktable (2) is fixed on by bracing frame (22) and measures on the pedestal (4), and the output terminal of measuring head (1) is connected with the input end of signal processing apparatus (3).
2, the adjustable three-dimensional contour outline measuring set of bilateral finishing tool type height measurement range according to claim 1, it is characterized in that above-mentioned measuring head (1) comprises laser instrument (5,6), imaging device (7) and measuring head housing (8), wherein laser instrument (5,6) is symmetrically distributed in the both sides of imaging device (7), the imaging optical axis of imaging device (7) is vertical with tested reference surface, laser instrument (5,6) and imaging device (7) all are fixed in the measuring head housing (8), and laser instrument (5,6) links to each other with Laser Power Devices (9) by cable (23,24) respectively.
3, the adjustable three-dimensional contour outline measuring set of bilateral finishing tool type height measurement range according to claim 2 is characterized in that above-mentioned laser instrument (5,6) can be semiconductor laser, also can be gas laser, or is fiber laser.
4, the adjustable three-dimensional contour outline measuring set of bilateral finishing tool type height measurement range according to claim 1, it is characterized in that above-mentioned two-dimension translational worktable (2) includes horizontal translation guide rail (10) and vertical translation guide rail (11), horizontal translation guide rail (10) and vertical translation guide rail (11) drive by horizontal translation motor (12) and vertical translation motor (13) respectively, and horizontal translation motor (12) and vertical translation motor (13) are connected with driving governor (14) with cable (21) by cable (20) respectively.
5, the adjustable three-dimensional contour outline measuring set of bilateral finishing tool type height measurement range according to claim 4, it is characterized in that above-mentioned vertical translation motor (13) is fixed on an end of vertical translation guide rail (11), measuring head housing (8) is fixed on the vertical translation guide rail (11); Horizontal translation motor (12) is fixed on an end of horizontal translation guide rail (10), and vertical translation guide rail (11) is fixed on the horizontal translation guide rail (10); Horizontal translation guide rail (10) is fixed on by bracing frame (22) and measures on the pedestal (4).
6, the adjustable three-dimensional contour outline measuring set of bilateral finishing tool type height measurement range according to claim 1 is characterized in that said signal processing device (3) includes microprocessor (16), image collection card (17), motor-driven interface card (18) composition; Image collection card (17) links to each other with imaging device (7) by video signal cable (19), and motor-driven interface card (18) links to each other with driving governor (14) by cable (15).
7, the adjustable three-dimensional contour outline measuring set of bilateral finishing tool type height measurement range according to claim 6 is characterized in that above-mentioned microprocessor (16) can be microcomputer, also can be single-chip microcomputer.
8, according to claim 1 or 2 or 3 or 4 or 5 or the 6 or 7 adjustable three-dimensional contour outline measuring sets of described bilateral finishing tool type height measurement range, it is characterized in that above-mentioned imaging device (7) can be digital camera, also can be digital camera.
9, according to claim 1 or 2 or 3 or 4 or 5 or the 6 or 7 adjustable three-dimensional contour outline measuring sets of described bilateral finishing tool type height measurement range, it is characterized in that above-mentioned horizontal translation motor (12) and vertical translation motor (13) are stepper motor, driving governor (14) is the stepper drive controller.
10, according to claim 1 or 2 or 3 or 4 or 5 or the 6 or 7 adjustable three-dimensional contour outline measuring sets of described bilateral finishing tool type height measurement range, it is characterized in that above-mentioned laser instrument (5,6) can be respectively single laser instrument, also can be respectively the array of a plurality of laser constitutions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320119746 CN2676151Y (en) | 2003-12-26 | 2003-12-26 | Doublesided light knife type three dimensional profile measuring device with adjustable height measurement range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320119746 CN2676151Y (en) | 2003-12-26 | 2003-12-26 | Doublesided light knife type three dimensional profile measuring device with adjustable height measurement range |
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| Publication Number | Publication Date |
|---|---|
| CN2676151Y true CN2676151Y (en) | 2005-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320119746 Expired - Fee Related CN2676151Y (en) | 2003-12-26 | 2003-12-26 | Doublesided light knife type three dimensional profile measuring device with adjustable height measurement range |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101334277B (en) * | 2007-06-28 | 2010-12-08 | 鸿富锦精密工业（深圳）有限公司 | Point laser automatic focusing scanning image measurement system and method |
| CN102549377A (en) * | 2009-05-21 | 2012-07-04 | 三星重工业株式会社 | Flat bed scan module, flat bed scan system, jig for measuring alignment errors of a flat bed scan module, and method for measuring alignment errors of a flat bed scan module using same |
| CN103630088A (en) * | 2013-11-06 | 2014-03-12 | 北京市地铁运营有限公司 | High-precision tunnel cross section detection method and device based on double laser bands |
| CN105180828A (en) * | 2015-08-21 | 2015-12-23 | 西安交通大学 | Multi-beam laser intersection scanning contourgraph |
| CN104220838B (en) * | 2012-03-28 | 2016-12-21 | 富士通株式会社 | Filming apparatus |
| CN110375645A (en) * | 2019-07-04 | 2019-10-25 | 成都绝影智能科技有限公司 | A kind of method and apparatus of character size detection |
-
2003
- 2003-12-26 CN CN 200320119746 patent/CN2676151Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101334277B (en) * | 2007-06-28 | 2010-12-08 | 鸿富锦精密工业（深圳）有限公司 | Point laser automatic focusing scanning image measurement system and method |
| US7968858B2 (en) | 2007-06-28 | 2011-06-28 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | System and method for scanning and measuring points of an object |
| CN102549377A (en) * | 2009-05-21 | 2012-07-04 | 三星重工业株式会社 | Flat bed scan module, flat bed scan system, jig for measuring alignment errors of a flat bed scan module, and method for measuring alignment errors of a flat bed scan module using same |
| CN104220838B (en) * | 2012-03-28 | 2016-12-21 | 富士通株式会社 | Filming apparatus |
| CN103630088A (en) * | 2013-11-06 | 2014-03-12 | 北京市地铁运营有限公司 | High-precision tunnel cross section detection method and device based on double laser bands |
| CN105180828A (en) * | 2015-08-21 | 2015-12-23 | 西安交通大学 | Multi-beam laser intersection scanning contourgraph |
| CN110375645A (en) * | 2019-07-04 | 2019-10-25 | 成都绝影智能科技有限公司 | A kind of method and apparatus of character size detection |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |