研究目的
Acquiring the interior shape of wind towers by means of a 3D laser scanning system (LSS) to monitor geometric changes during the welding process.
研究成果
The deployed 3D LSS successfully acquired the tower’s interior surface profile as a point cloud, demonstrating the methodology's potential to characterize geometrical changes due to welding processes. The system is advantageous for detecting and measuring geometric changes, assisting in correcting geometrical imperfections caused by deformation.
研究不足
Due to the camera’s field of view (FOV), it was not possible to acquire the complete profile with a single acquisition, requiring the experiment to be carried out in two stages. The limited travelling distance of the welding robot also restricted the length of the tower section that could be captured.
1：Experimental Design and Method Selection:
The study deployed a 3D LSS consisting of a circular laser module and a camera mounted on a welding robot’s arm to scan the interior surface of a wind tower.
2：Sample Selection and Data Sources:
A 9-metre-long section of a cylindrical wind tower was selected for the experiment.
3：List of Experimental Equipment and Materials:
The setup included a
4：0 MP color camera, a green 50 mW circular laser module with a wavelength of 520 nm, and a Bosch profile for mounting the optical instruments. Experimental Procedures and Operational Workflow:
The system moved through the tower with a constant velocity, capturing images that were then processed to obtain the tower’s 3D profile.
5：Data Analysis Methods:
The captured images were transformed into binary images through image processing, and the tower’s inner diameter was measured from the 3D LSS experiment.
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