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《Opto-Electronic Engineering》 2007-01
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Photoelectric detection and 3D reconstruction system for the inner surface of small-diameter pipes

WU En-qi1,KE Ying-lin2,LI Jiang-xiong2 ( 1. College of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China; 2. College of Mechanical and Energy Engineering, Zhejiang University, Hangzhou 310027, China )  
A detection and three-dimensional reconstruction system for the interior surface of small-diameter pipes was presented based on Position Sensitive Detector (PSD) and optical triangulation principle. The system consisted of an in-pipe micro-robot, a profile detection sensor, a curvature sensor and so on. The profile inspection sensor caught the point position of the inner surface section in the local coordinates when it moved in pipe driven by the robot. At the same time, the curvature sensor got the local geometric information of the central axis of pipe in the sampling position and reconstructed the central axis. Finally, the inner surface of the pipe was reconstructed according to the data of the two sensors and the step of the robot. Experimental results show that the relative measurement accuracy of the pipe curvature is ±2%, and the measurement accuracy of inner surface defect and inner diameter are ±0.1mm respectively.
【CateGory Index】: TP274.4
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Chinese Journal Full-text Database 1 Hits
1 LI Xiaotian1,ZHANG Tieqiang2,ZHANG Shengyong1,NAN Baojiang1,GUO Xiaodong1(1.National Key Laboratory of Combustion,Thermo-structure and Flow,the 41st Institute of the Fourth Academy of CASC,Xi′an 710025,China;2.College of Physics,Jilin University,Changchun 130022,China);Small object′s dimension measure and three-dimension reconstruction system based on laser triangulation[J];Optical Instruments;2008-06
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