Paper
11 October 2010 FPGA and DSP based an intelligent visual sensor design for laser welding seam recognition
Fang Jiang, Chunying Jiang, Hanlin Ge
Author Affiliations +
Abstract
A kind of intelligent visual sensor system, which is mainly composed of a laser lighting source and an intelligent camera based on FPGA and DSP, is designed using the triangle structured light principle for laser welding seam recognition. Intending to meet the high-precision demands, on one hand, the components of the sensor such as the lighting source, the optical lens, the optic sensor of the camera are selected and the errors caused by these parts are analyzed. Furthermore, the triangle structured light principle models are built and the simulation is given to optimize the light path parameters. On the other hand, the methods of the image processing for seam recognition using intelligent camera based on FPGA and DSP are explained. Experiments results proved that the sensor design is reasonable and the image recognition methods are rational and effective. Very compact structure, high-precision and high-real-time performance are integrated in this sensor, so it can be applied well in the seam tracking and inspection system in the laser welding and arc welding fields.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Fang Jiang, Chunying Jiang, and Hanlin Ge "FPGA and DSP based an intelligent visual sensor design for laser welding seam recognition", Proc. SPIE 7656, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 765677 (11 October 2010); https://doi.org/10.1117/12.864526
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KEYWORDS
Sensors

Digital signal processing

Cameras

Distortion

Laser welding

Field programmable gate arrays

Intelligent sensors

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