CN106556355B - A kind of measuring three-dimensional profile method and system of ship hull plate - Google Patents
A kind of measuring three-dimensional profile method and system of ship hull plate Download PDFInfo
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- CN106556355B CN106556355B CN201611076892.9A CN201611076892A CN106556355B CN 106556355 B CN106556355 B CN 106556355B CN 201611076892 A CN201611076892 A CN 201611076892A CN 106556355 B CN106556355 B CN 106556355B
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- profile
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- hull plate
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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
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a kind of measuring three-dimensional profile methods of ship hull plate, include the three-D profile scanning information of acquisition ship hull plate, and the scanning profile model of ship hull plate is established according to the three-D profile scanning information；The contact information of contact-type 3 D profile measurer contacted with ship hull plate is obtained, and the contact profile model of ship hull plate is established according to the contact information；The scanning profile model and the contact profile model are synthesized, three-D profile model is corrected in generation.The invention also discloses a kind of measuring three-dimensional profile system of ship hull plate, including non-contact 3-D profile scanner, contact-type 3 D profile measurer and processor.Two kinds of three-D profile models are formed, and two kinds of models are synthesized and correct three-D profile model by non-contact and contact two ways, improve the accuracy of the three-D profile model measurement of ship hull plate, and improve the degree of automation and antijamming capability.
Description
Technical field
The present invention relates to measuring three-dimensional profile field, a kind of measuring three-dimensional profile method more particularly to ship hull plate and
System.
Background technology
It is the key technology of ship hull plate automatic forming processing to the measuring three-dimensional profile for being molded ship hull plate curved surface.Mesh
The preceding experience that experienced operator is relied primarily in the actual production of shipyard is completed to measure using model or sample case.It is empirical by hand
The low error of ship hull plate detection mode efficiency it is big, and cannot meet Modern Shipbuilding industry to automation processing requirement, this
Have become a bottleneck for restricting ship's turn-round time and quality.
Electronic instrument can also be used to carry out measuring three-dimensional profile to ship hull plate, such as surveyed using optical interferometry, laser triangulation
The methods of amount method, image analytical method, laser ranging method and feature optical method.However non-contact measurement is often inaccurate, it is right
The portion forms of structure can be lost in complex component.
Therefore, how to provide a kind of can be to the measuring three-dimensional profile method and system that ship hull plate is accurately measured
The current technical issues that need to address of those skilled in the art.
Invention content
The object of the present invention is to provide a kind of measuring three-dimensional profile method and system of ship hull plate, can be to ship hull plate
Accurately measured.
In order to solve the above technical problems, the present invention provides a kind of measuring three-dimensional profile method of ship hull plate, including：
The three-D profile scanning information of ship hull plate is obtained, and ship hull plate is established according to the three-D profile scanning information
Scanning profile model；
The contact information of contact-type 3 D profile measurer contacted with ship hull plate is obtained, and according to the contact information
Establish the contact profile model of ship hull plate；
The scanning profile model and the contact profile model are synthesized, three-D profile model is corrected in generation.
Preferably, the three-D profile scanning information for obtaining ship hull plate is obtained specifically by three-dimensional laser scanner
The three-D profile scanning information.
Preferably, the contact-type 3 D profile measurer is specially hydraulic cylinder array measurement instrument, the contact information
Specially three-dimensional coordinate information.
Preferably, the contact information of contact-type 3 D profile measurer contacted with ship hull plate that obtains includes：
Three-dimensional system of coordinate is established, the column locations of each hydraulic cylinder of the hydraulic cylinder array measurement instrument are respectively x
Axial coordinate and y-axis coordinate, the overhang of each hydraulic cylinder is z-axis coordinate；
Obtain x-axis coordinate, y-axis coordinate and the z-axis coordinate of each hydraulic cylinder.
Preferably, the contact profile model for establishing ship hull plate according to the contact information is specially to described in whole
X-axis coordinate, y-axis coordinate and the z-axis coordinate of hydraulic cylinder carry out B-spline space-curve fitting, obtain the contact profile model.
Preferably, the synthesis scanning profile model and the contact profile model include：
The key point of the scanning profile model is obtained, and obtains the key of corresponding position in the contact profile model
Point；
Adjust the weight of key point described in the contact profile model；
Key point described in the scanning profile model is modified according to the weight, obtains the modified profile mould
Type.
Preferably, the key point for obtaining the scanning profile model is specially to obtain song in the scanning profile model
Rate catastrophe point, central point and significant points point are the key point.
Preferably, the weight of key point described in the adjustment contact profile model includes：
When the curvature of the key point is more than preset value, increase the weight；
When the curvature of the key point is less than preset value, reduce the weight.
The present invention also provides a kind of measuring three-dimensional profile system of ship hull plate, including：
Non-contact 3-D profile scanner, for obtaining the three-D profile scanning information of ship hull plate；
Contact-type 3 D profile measurer, for contact information to be contacted and obtained with ship hull plate；
Processor communicates to connect the non-contact 3-D profile scanner and the contact-type 3 D profile measurer；
And the scanning profile model of ship hull plate is established according to the three-D profile scanning information；Hull is established according to the contact information
The contact profile model of outside plate；The scanning profile model and the contact profile model are synthesized, three-D profile mould is corrected in generation
Type.
Preferably, the non-contact 3-D profile scanner is specially three-dimensional laser scanner；
The contact-type 3 D profile measurer is specially hydraulic cylinder array measurement instrument, the hydraulic cylinder array measurement
Instrument is included in the evenly arranged multiple hydraulic cylinders of ranks, and the bottom end of the hydraulic cylinder is provided with electro hydraulic gear, described
Hydraulic cylinder top is provided with magnechuck contact surface, and the hydraulic cylinder upper end is internally provided with built in pressure sensor.
The measuring three-dimensional profile method of ship hull plate provided by the invention, the three-D profile scanning including obtaining ship hull plate
Information, and establish according to three-D profile scanning information the scanning profile model of ship hull plate；What acquisition was contacted with ship hull plate connects
The contact information of touch instrument for measuring three-dimensional profile, and the contact profile model of ship hull plate is established according to contact information；Synthesis is swept
Skeleton pattern and contact profile model are retouched, three-D profile model is corrected in generation.The present invention also provides a kind of measuring three-dimensional profile systems
System, the non-contact 3-D profile scanner of the three-D profile scanning information including being used to obtain ship hull plate are used for and hull
Outside plate contacts and obtains the contact-type 3 D profile measurer of contact information and the processor for generating three-D profile model.It is logical
It crosses non-contact and contact two ways and forms two kinds of three-D profile models, and two kinds of models are synthesized and correct three-D profile mould
Type, improves the accuracy of the three-D profile model measurement of ship hull plate, and improves the degree of automation and antijamming capability.
Description of the drawings
Fig. 1 is a kind of flow diagram of specific embodiment of measuring three-dimensional profile method provided by the present invention；
Fig. 2 is surveyed for hydraulic cylinder array in a kind of specific embodiment of measuring three-dimensional profile system provided by the present invention
Measure the vertical view of instrument；
Structures of the Fig. 3 for hydraulic cylinder in a kind of specific embodiment of measuring three-dimensional profile method provided by the present invention
Schematic diagram.
Specific embodiment
The core of the present invention is to provide a kind of measuring three-dimensional profile method and system of ship hull plate, can be to ship hull plate
Accurately measured.
In order to which those skilled in the art is made to more fully understand the present invention program, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.
It please refers to Fig.1 to Fig. 3, Fig. 1 is a kind of specific embodiment of measuring three-dimensional profile method provided by the present invention
Flow diagram；Fig. 2 is hydraulic cylinder battle array in a kind of specific embodiment of measuring three-dimensional profile system provided by the present invention
The vertical view of row measuring instrument；Fig. 3 is hydraulic pressure in a kind of specific embodiment of measuring three-dimensional profile method provided by the present invention
The structure diagram of cylinder.
The specific embodiment of the invention provide measuring three-dimensional profile system, including non-contact 3-D profile scanner,
Contact-type 3 D profile measurer and processor, wherein non-contact 3-D profile scanner are used to obtain the three-dimensional of ship hull plate
Profile scan information, contact-type 3 D profile measurer are used to contact with ship hull plate and obtain contact information, processor communication
Connection non-contact 3-D profile scanner and contact-type 3 D profile measurer establish hull according to three-D profile scanning information
The scanning profile model of outside plate；The contact profile model of ship hull plate is established according to contact information；Scan synthesis skeleton pattern and
Three-D profile model is corrected in contact profile model, generation.
The method for carrying out measuring three-dimensional profile to ship hull plate using above-mentioned measuring three-dimensional profile system includes step：
The three-D profile scanning information of ship hull plate is obtained, and sweeping for ship hull plate is established according to three-D profile scanning information
Retouch skeleton pattern；
The contact information of contact-type 3 D profile measurer contacted with ship hull plate is obtained, and is established according to contact information
The contact profile model of ship hull plate；
Three-D profile model is corrected in scan synthesis skeleton pattern and contact profile model, generation.
Two kinds of three-D profile models are formed, and two kinds of models are synthesized amendment three by non-contact and contact two ways
Skeleton pattern is tieed up, improves the accuracy of the three-D profile model measurement of ship hull plate, and improve the degree of automation and anti-interference energy
Power.
Specifically, non-contact 3-D profile scanner can be three-dimensional laser scanner, obtain ship hull plate at this time
Three-D profile scanning information obtains three-D profile scanning information specifically by three-dimensional laser scanner, other optics can also be used
Scanner, within protection scope of the present invention.
Contact-type 3 D profile measurer is specially hydraulic cylinder array measurement instrument, and hydraulic cylinder array measurement instrument is including being in
The evenly arranged multiple hydraulic cylinders 1 of ranks, the bottom end of hydraulic cylinder 1 are provided with electro hydraulic gear 2,1 top of hydraulic cylinder
Magnechuck contact surface 3 is provided with, and 1 upper end of hydraulic cylinder is internally provided with built in pressure sensor 4, contact information is specially
Three-dimensional coordinate information.During measurement, ship hull plate is placed in hydraulic cylinder array measurement instrument, hydraulic cylinder 1 rises and outside plate
After contact, then rise certain altitude, ship hull plate is fixed in the magnechuck contact surface 3 of hydraulic cylinder 1, is contacted with outside plate
One end for upper end, the other end is lower end, therefore obtains contacting for the contact-type 3 D profile measurer contacted with ship hull plate
Information includes：
Three-dimensional system of coordinate is established, the column locations of each hydraulic cylinder of hydraulic cylinder array measurement instrument are respectively that x-axis is sat
Mark and y-axis coordinate, the overhang of each hydraulic cylinder is z-axis coordinate.Specifically, the first row of hydraulic cylinder array and last
Origin of the hydraulic cylinder of capable point of intersection as x-axis and y-axis, the minimum hydraulic pressure circle in top horizontal position in multiple hydraulic cylinders
The top of column is as z-axis origin.
The x-axis coordinate, y-axis coordinate and z-axis coordinate of each hydraulic cylinder are obtained, that is, records the row where each hydraulic cylinder
Column position and overhang are converted into corresponding coordinate.
The contact profile model of ship hull plate is established specially to x-axis coordinate, the y of whole hydraulic cylinders according to contact information
Axial coordinate and z-axis coordinate carry out B-spline space-curve fitting, obtain contact profile model.Other modes can also be used to be intended
It closes, within protection scope of the present invention.
On the basis of the measuring method provided in above-mentioned each specific embodiment, scan synthesis skeleton pattern and contact profile
Model includes：
The key point of scanning profile model is obtained, wherein the key point for obtaining scanning profile model is specially to obtain scan wheel
Wide model mean curvature catastrophe point, central point and significant points point are key point.Obtain corresponding position in contact profile model simultaneously
Key point, i.e. the point identical with the key point position in scanning profile model.
The weight of key point in contact profile model is adjusted, when specially the curvature of key point is more than preset value, increases power
Weight when the curvature of key point is less than preset value, reduces weight.Amount of curvature of the weighting according to position where key point, for song
The larger curve of rate should suitably increase the weight of the key point of contact profile model, at the smaller curve of curvature, due to electricity
The influence of magnetic-disc contact surface, it should reduce the weight of the key point of contact profile model.
Key point in scanning profile model is modified according to weight, obtains modified profile model.I.e. with scanning profile
Based on model, contact profile model is reference, according to weight adjustment mode before, adjusts key point in contact profile model
Weight is synthesized in scanning profile model, obtains final modified profile model.
Detailed Jie has been carried out to a kind of measuring three-dimensional profile method and system of ship hull plate provided by the present invention above
It continues.Specific case used herein is expounded the principle of the present invention and embodiment, and the explanation of above example is only
It is the method and its core concept for being used to help understand the present invention.It should be pointed out that for those skilled in the art
For, without departing from the principle of the present invention, can also to the present invention some improvement and modification can also be carried out, these improve and repair
Decorations are also fallen within the protection scope of the claims of the present invention.
Claims (7)
1. a kind of measuring three-dimensional profile method of ship hull plate, which is characterized in that including：
The three-D profile scanning information of ship hull plate is obtained, and sweeping for ship hull plate is established according to the three-D profile scanning information
Retouch skeleton pattern；
The contact information of contact-type 3 D profile measurer contacted with ship hull plate is obtained, and is established according to the contact information
The contact profile model of ship hull plate；
The scanning profile model and the contact profile model are synthesized, three-D profile model is corrected in generation；
The synthesis scanning profile model and the contact profile model include：
The key point of the scanning profile model is obtained, and obtains the key point of corresponding position in the contact profile model；
Adjust the weight of key point described in the contact profile model；
Key point described in the scanning profile model is modified according to the weight, obtains the modified profile model.
2. measuring three-dimensional profile method according to claim 1, which is characterized in that the three-dimensional wheel for obtaining ship hull plate
Wide scanning information obtains the three-D profile scanning information specifically by three-dimensional laser scanner.
3. measuring three-dimensional profile method according to claim 2, which is characterized in that the contact-type 3 D profile measurer
Specially hydraulic cylinder array measurement instrument, the contact information is specially three-dimensional coordinate information.
4. measuring three-dimensional profile method according to claim 3, which is characterized in that described to obtain what is contacted with ship hull plate
The contact information of contact-type 3 D profile measurer includes：
Three-dimensional system of coordinate is established, the column locations of each hydraulic cylinder of the hydraulic cylinder array measurement instrument are respectively that x-axis is sat
Mark and y-axis coordinate, the overhang of each hydraulic cylinder is z-axis coordinate；
Obtain x-axis coordinate, y-axis coordinate and the z-axis coordinate of each hydraulic cylinder.
5. measuring three-dimensional profile method according to claim 4, which is characterized in that described to be established according to the contact information
The contact profile model of ship hull plate is specially to carry out B to all the x-axis coordinate of the hydraulic cylinder, y-axis coordinate and z-axis coordinate
Spline space curve matching obtains the contact profile model.
6. measuring three-dimensional profile method according to claim 1, which is characterized in that described to obtain the scanning profile model
Key point be specially to obtain the scanning profile model mean curvature catastrophe point, central point and significant points point as the key
Point.
7. measuring three-dimensional profile method according to claim 6, which is characterized in that the adjustment contact profile model
Described in the weight of key point include：
When the curvature of the key point is more than preset value, increase the weight；
When the curvature of the key point is less than preset value, reduce the weight.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611076892.9A CN106556355B (en) | 2016-11-29 | 2016-11-29 | A kind of measuring three-dimensional profile method and system of ship hull plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611076892.9A CN106556355B (en) | 2016-11-29 | 2016-11-29 | A kind of measuring three-dimensional profile method and system of ship hull plate |
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| Publication Number | Publication Date |
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| CN106556355A CN106556355A (en) | 2017-04-05 |
| CN106556355B true CN106556355B (en) | 2018-06-15 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101520319A (en) * | 2008-02-27 | 2009-09-02 | 邹小平 | Composite three-dimensional laser measurement system and measurement method |
| CN101922912A (en) * | 2010-07-22 | 2010-12-22 | 北京矿冶研究总院 | Three-dimensional laser scanning measurement method and device |
| CN103438826A (en) * | 2013-08-16 | 2013-12-11 | 江苏科技大学 | Three-dimensional measurement system and three-dimensional measurement method for steel plate with lasers and vision combined |
| CN203772209U (en) * | 2014-01-26 | 2014-08-13 | 武汉理工大学 | Three-dimensional contact board measuring device for hull outer plate |
| JP5975562B2 (en) * | 2012-03-02 | 2016-08-23 | オリンパス株式会社 | Imaging device and method of operating imaging device |
-
2016
- 2016-11-29 CN CN201611076892.9A patent/CN106556355B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101520319A (en) * | 2008-02-27 | 2009-09-02 | 邹小平 | Composite three-dimensional laser measurement system and measurement method |
| CN101922912A (en) * | 2010-07-22 | 2010-12-22 | 北京矿冶研究总院 | Three-dimensional laser scanning measurement method and device |
| JP5975562B2 (en) * | 2012-03-02 | 2016-08-23 | オリンパス株式会社 | Imaging device and method of operating imaging device |
| CN103438826A (en) * | 2013-08-16 | 2013-12-11 | 江苏科技大学 | Three-dimensional measurement system and three-dimensional measurement method for steel plate with lasers and vision combined |
| CN203772209U (en) * | 2014-01-26 | 2014-08-13 | 武汉理工大学 | Three-dimensional contact board measuring device for hull outer plate |
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| CN106556355A (en) | 2017-04-05 |
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