CN106839988A - A kind of outer calibration target and its application method suitable for optical measuring system - Google Patents
A kind of outer calibration target and its application method suitable for optical measuring system Download PDFInfo
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- CN106839988A CN106839988A CN201710207272.2A CN201710207272A CN106839988A CN 106839988 A CN106839988 A CN 106839988A CN 201710207272 A CN201710207272 A CN 201710207272A CN 106839988 A CN106839988 A CN 106839988A
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- Prior art keywords
- target
- sign picture
- matrix
- measuring system
- optical measuring
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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
- G01B11/005—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates coordinate measuring machines
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The present invention provides a kind of outer calibration target and its application method suitable for optical measuring system, including target matrix；Cone nest, sign picture, sign picture location hole are provided with the targeted substrate；The sign picture is arranged on target matrix center, to identify the centered about point of figure location hole；Laser tracker target ball is placed in cone nest.Mounting hole is also evenly equipped with each edge of described matrix, the installation for target is fixed.Compared with prior art, the outer calibration target of the present invention can be more precisely mounted on tested equipment；When using the present invention, can be by accurately measuring the space coordinates bored the coordinate value of nest central point, then calculate sign picture central point on acquisition target each on target, identification accuracy is high.Of the invention novel in design, system is easy to use, is easy to promote the use of.
Description
Technical field
It is more particularly to a kind of to be applied to optical measuring system the present invention relates to a kind of optical system calibration image target
Outer calibration target and its application method.
Background technology
With the raising of science and technology and equipment manufacturing ability, the equipment with big plane or large curved surface is rapidly progressed,
Such as big aircraft, aircraft carrier and Large Phased Array Radar.These big planes and large curved surface are equipped in the external world such as windage, wave bar
Physical deformation under part inevitably affects equipment Design.To measure the shape under the conditions of large area is equipped in external applied load
Become, analyze the stressing conditions of the equipment, for equipment Design provides experimental data support, so that optimization design.A kind of optics is surveyed
Amount system-full visual angle high precision three-dimensional measurement instrument is using high speed, high resolution line-scan digital camera and scanning pendulum len (including plane reflection
Mirror and high precision turntable) large field of view scan is realized, the D coordinates value of target can be drawn by data processing, and then complete control
The measurement of point is made, wherein target is critical component, but existing target centre spot is made using reflectorized material, by light
Learn measuring system Scan orientation point to determine target numbering, this target installation accuracy is poor, and is difficult by optical measurement system
System identification.
The content of the invention
It is poor the invention aims to solve target installation accuracy in the prior art, and be difficult by optical measurement system
The defect of system identification, there is provided a kind of to be solved the above problems with target suitable for the outer calibration of optical measuring system.
To achieve these goals, technical scheme is as follows：
A kind of outer calibration target suitable for optical measuring system, including target matrix；Set on the targeted substrate
It is equipped with cone nest, sign picture, sign picture location hole；The sign picture is arranged on target matrix center, to identify during figure location hole is
Heart anchor point；Laser tracker target ball is placed in cone nest.
Preferably, 4 cone nests are provided with the matrix, and relative sign picture location hole is symmetricly set on the four of matrix
Week.
Preferably, the opening of the cone nest is 90 °.
Preferably, mounting hole (6) is also evenly equipped with each edge of described matrix, the installation for target is fixed.
The present invention also provides a kind of application method of the outer calibration target suitable for optical measuring system, and the target is
Above-mentioned target；Application method is comprised the following steps：
Using precision instrument accurately measure on target each cone nest central point A1, A2, A3, A4 coordinate value (x1, y1,
Z1), (x2, y2, z2), (x3, y3, z3) and (x4, y4, z4), calculates further according to following formula and obtains sign picture central point on target
Spatial value (x, y, z)：
X=(x1+x2+x3+x4)/4
Y=(y1+y2+y3+y4)/4
Z=(z1+z2+z3+z4)/4
The target co-ordinates value that will be obtained is input into full visual angle high precision three-dimensional measurement instrument system, is measured by space intersection
Principle carries out three-dimensional coordinate resolving, obtains a series of coordinate value of target measurement point relative measurement instrument, so as to complete large area dress
The measurement at standby upper control point.
The present invention compared with prior art, has the advantages that：
The outer calibration target of the present invention can be more precisely mounted on tested equipment；When using the present invention, can be with
By accurately measuring the coordinate value of each cone nest central point on target, then calculate that the space for obtaining sign picture central point on target is sat
Mark, identification accuracy is high.Of the invention novel in design, system is easy to use, is easy to promote the use of.
Brief description of the drawings
Fig. 1 is the axle side structure schematic diagram of the embodiment of the present invention 1；
Fig. 2 is the vertical cross section structural representation of the embodiment of the present invention 1；
Fig. 3 is the overlooking the structure diagram of the embodiment of the present invention 1.
Wherein：
1- targets matrix, 2-90 degree cone nest, 3- mark figures
4- laser trackers target ball, 5- sign pictures location hole, 6- mounting holes
Specific embodiment
To make have a better understanding and awareness to architectural feature of the invention and the effect reached, to preferably
Embodiment and accompanying drawing coordinate detailed description, are described as follows：
Embodiment 1
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of outer calibration target suitable for optical measuring system, including target matrix 1；
The matrix 1 that the present embodiment is provided is square platy structure, and 2,4 cones of cone nest are provided with four corners of targeted substrate 1
Nest 2 is symmetrical with respect to sign picture location hole, and the opening for boring nest 2 is 90 °, and laser tracker target ball 4 is placed in cone nest 2.In matrix 1
On be additionally provided with sign picture 3, sign picture location hole 5；Sign picture 3 is arranged on target matrix 1 and hits exactly, and is to identify figure location hole 5
Centre spot.Mounting hole 6 is also evenly equipped with each edge of matrix 1, the installation for target is fixed.
Embodiment 2
A kind of application method of outer calibration target suitable for optical measuring system, comprises the following steps：
Using precision instrument accurately measure on target each cone nest central point A1, A2, A3, A4 coordinate value x1, y1, z1,
X2, y2, z2, x3, y3, z3 and x4, y4, z4 calculate the spatial value for obtaining sign picture central point on target further according to following formula
(x,y,z)：
X=(x1+x2+x3+x4)/4
Y=(y1+y2+y3+y4)/4
Z=(z1+z2+z3+z4)/4
The target co-ordinates value that will be obtained is input into full visual angle high precision three-dimensional measurement instrument system, is measured by space intersection
Principle carries out three-dimensional coordinate resolving, obtains a series of coordinate value of target measurement point relative measurement instrument, so as to complete large area dress
The measurement at standby upper control point.
The present invention provides a kind of outer calibration target suitable for optical measuring system, and target is accurately positioned by mounting hole
Cursor position, is placed on the laser tracker target ball in 90 degree of cone nests to extrapolate target central point relative coordinate values by measurement,
It is convenient and swift when using the target calibration optical measuring system, and the degree of accuracy is high.Precision instrument such as high-precision laser can be used
Tracker accurately measures on target the coordinate value of each cone nest central point, then calculates and obtain the relative of sign picture central point on target
Coordinate value, the coordinate value of target is input into full visual angle high precision three-dimensional measurement instrument system, by space intersection's measuring principle
Three-dimensional coordinate resolving is carried out, a series of coordinate value of target measurement point relative measurement instrument is obtained, so as to complete on large area equipment
The measurement at control point.
General principle of the invention, principal character and advantages of the present invention has been shown and described above.The technology of the industry
Personnel it should be appreciated that the present invention is not limited to the above embodiments, the simply present invention described in above-described embodiment and specification
Principle, various changes and modifications of the present invention are possible without departing from the spirit and scope of the present invention, these change and
Improvement is both fallen within the range of claimed invention.The protection domain of application claims by appending claims and its
Equivalent is defined.
Claims (5)
1. a kind of outer calibration target suitable for optical measuring system, it is characterised in that：Including target matrix (1)；Described
Cone nest (2), sign picture (3), sign picture location hole (5) are provided with targeted substrate (1)；The sign picture (3) is arranged on target
Matrix (1) hits exactly, to identify the centered about point of figure location hole (5)；Laser tracker target ball (4) is placed in cone nest (2)；
Each edge of described matrix (1) is also evenly equipped with mounting hole (6), and the installation for target is fixed.
2. a kind of outer calibration target suitable for optical measuring system according to claim 1, it is characterised in that：Institute
State and 4 cone nests (2) are provided with matrix (1), and relative sign picture location hole is symmetricly set on the surrounding of matrix (1).
3. a kind of outer calibration target suitable for optical measuring system according to claim 1, it is characterised in that：It is described
The opening of cone nest (2) is 90 °.
4. the application method of a kind of outer calibration target suitable for optical measuring system, it is characterised in that：The target is power
Profit requires 1 to 3 any described target；Application method is comprised the following steps：
1) position of target is accurately positioned by mounting hole；
2) target central point relative coordinate is extrapolated by measuring the laser tracker target ball (4) being placed in 90 ° of cone nests (2)
Value；
3) the target co-ordinates value that will be obtained is input into full visual angle high precision three-dimensional measurement instrument system, measures former by space intersection
Reason carries out three-dimensional coordinate resolving, obtains a series of coordinate value of target measurement point relative measurement instrument, so as to complete large area equipment
The measurement at upper control point.
5. the application method of a kind of outer calibration target suitable for optical measuring system according to claim 4, it is special
Levy and be：The step 2) it is specific using precision instrument accurately measure each cone nest (2) central point on target coordinate value (x1,
Y1, z1), (x2, y2, z2), (x3, y3, z3) and (x4, y4, z4), calculated further according to following formula and obtained on target in sign picture (3)
The spatial value (x, y, z) of heart point：
X=(x1+x2+x3+x4)/4；
Y=(y1+y2+y3+y4)/4；
Z=(z1+z2+z3+z4)/4；
Then by sign picture (3) central point for arriving spatial value (x, y, z) input to full visual angle high precision three-dimensional measurement
In instrument system, three-dimensional coordinate resolving is carried out by space intersection's measuring principle, obtain a series of target measurement point relative measurement instrument
Coordinate value, so as to complete the measurement at the upper control point of large area equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710207272.2A CN106839988A (en) | 2017-03-31 | 2017-03-31 | A kind of outer calibration target and its application method suitable for optical measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710207272.2A CN106839988A (en) | 2017-03-31 | 2017-03-31 | A kind of outer calibration target and its application method suitable for optical measuring system |
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| Publication Number | Publication Date |
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| CN106839988A true CN106839988A (en) | 2017-06-13 |
Family
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| CN201710207272.2A Pending CN106839988A (en) | 2017-03-31 | 2017-03-31 | A kind of outer calibration target and its application method suitable for optical measuring system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110702004A (en) * | 2019-09-23 | 2020-01-17 | 深圳市智信精密仪器有限公司 | Calibration block design and inspection method for high-precision calibration splicing of multiple line lasers |
| CN111664813A (en) * | 2020-05-15 | 2020-09-15 | 成都飞机工业（集团）有限责任公司 | Free surface arbitrary hole normal vector measuring device and method and compensation method |
| CN112605437A (en) * | 2020-12-15 | 2021-04-06 | 中船桂江造船有限公司 | Method for quickly determining center circle of shaft system boring hole |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102589430A (en) * | 2012-02-01 | 2012-07-18 | 哈尔滨工业大学 | Calibrating method for multi-instrument coordinate unification device |
| CN106017319A (en) * | 2016-05-24 | 2016-10-12 | 北京建筑大学 | Coordinate transformation tool and method of 3D laser scanning data based on high-precision point measurement |
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2017
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589430A (en) * | 2012-02-01 | 2012-07-18 | 哈尔滨工业大学 | Calibrating method for multi-instrument coordinate unification device |
| CN106017319A (en) * | 2016-05-24 | 2016-10-12 | 北京建筑大学 | Coordinate transformation tool and method of 3D laser scanning data based on high-precision point measurement |
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| 张闯 等: "《北京正负电子对撞机重大改造工程加速器的设计与研制》", 30 April 2015 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110702004A (en) * | 2019-09-23 | 2020-01-17 | 深圳市智信精密仪器有限公司 | Calibration block design and inspection method for high-precision calibration splicing of multiple line lasers |
| CN111664813A (en) * | 2020-05-15 | 2020-09-15 | 成都飞机工业（集团）有限责任公司 | Free surface arbitrary hole normal vector measuring device and method and compensation method |
| CN111664813B (en) * | 2020-05-15 | 2021-08-03 | 成都飞机工业（集团）有限责任公司 | Free surface arbitrary hole normal vector measuring device and method and compensation method |
| CN112605437A (en) * | 2020-12-15 | 2021-04-06 | 中船桂江造船有限公司 | Method for quickly determining center circle of shaft system boring hole |
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Application publication date: 20170613 |
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