Ship steel plate curved surface dimension on-line measurement system and method
A measurement system and measurement method technology, applied in measurement devices, instruments, optical devices, etc., can solve the problems of inability to realize the surface fitting and detection of ship steel plates, and no online detection function, so as to improve the automation level and efficiency, reduce The effect of human intervention
Inactive Publication Date: 2016-07-20
JIANGSU UNIV OF SCI & TECH
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[0004] The purpose of the present invention is to provide an online measurement system and method for the curved surface size of ship steel plates, which combines machine vision and total station measurement technology, and overcomes that the method based on total station in the prior art can only complete dozens of key points. The measurement of point data and the defect that most of the work is done manually can realize the detection and analysis of the coordinate accuracy of the key points on the surface segment, and solve the problem that the existing technology cannot realize the fitting and detection of the ship steel plate surface without online detection function problem
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[0042] Such as figure 1Shown is a schematic diagram of the system structure of an embodiment of the present invention. Wherein, 1 is an image acquisition part, including a CCD camera 1-1 and a total station 1-2. Measurement part 2 includes: image processing module 2-1, image point automatic matching module 2-2, self-checking beam adjustment module 2-3, three-dimensional data display module 2-4, parameter design module 2-5, PAD2- 6. Three-dimensional data deviation analysis module 2-7, 3D graphic on-site synchronous display module 2-8. The general control part 3 includes: a surface fitting module 3-1, an accuracy analysis module 3-2, and an error feedback analysis module 3-3. The entire measurement system is a real-time online measurement system, which can realize the measurement of key points and curved surfaces on the curved surface of the ship's steel plate, greatly improving the measurement efficiency and accuracy of the ship's steel plate.
[0043] The above-mentioned C...
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The present invention discloses a ship steel plate curved surface dimension on-line measurement system and method. A method of combining total station automatic measurement and CCD close-range photogrammetry measurement is employed to perform three-dimensional precision measurement of key points. Besides, the CCD close-range photogrammetry measurement is employed to perform the segment measurement of three-dimensional precision of curved surface encoding mark points and non-encoding mark points and perform segment measurement of three-dimensional precision of the curved surface points, the curved surface fitting of the curved surface segment measurement is performed, the three-dimensional model of the curved surface plate is generated, and the three-dimensional model of the curved surface plate is compared with a designed three-dimensional model and is analyzed. According to the invention, the problems are overcome that the method based on the total station only can complete the measurement of data of dozens of key points and a lot of work has to be done by manpower, the precision detection analysis of the coordinates of the key points on the curve surface segment is realized, the problems are solved that the fitting and the detection of the curved surface cannot be completed and there is no online detection function.
Description
technical field [0001] The invention relates to the technical field of three-dimensional measurement of machine vision, in particular to an online measurement system and method for the curved surface size of a ship steel plate. Background technique [0002] At present, in the shipbuilding industry, from the actual production and use of precision measuring instruments and precision management software, the method of total station plus precision management software used in the segmental precision measurement of ship steel plate surface has been maturely used. However, the method based on the total station can only complete the measurement of data of dozens of points, and most of the work is done manually to realize the detection and analysis of the coordinate accuracy of the key points on the surface segment, and cannot realize the fitting and detection of the surface , no online detection function, can not meet the overall requirements of the sub-section line processing of sh...
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IPC IPC(8): G01B11/24
CPCG01B11/24
Inventor 卢道华吴兵王佳胡可丽
Owner JIANGSU UNIV OF SCI & TECH
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