Laser Weld Seam Tracking Sensing Technology Based on Swing Mirror

Based on the principle of laser triangulation measurement, a laser welding seam tracking sensor is developed to track U-shaped, V-shaped and flat bottom grooves of pipeline welds in real time. Aiming at the problems of reflection of pipeline welding groove and strong welding arc, which affect the ac...

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Bibliographic Details
Published in2022 IEEE 7th Optoelectronics Global Conference (OGC) pp. 278 - 281
Main Authors Changyong, Tian, Xuhao, Song, Tie, Yin, Yi, Zhang
Format Conference Proceeding
LanguageEnglish
Published IEEE 06.12.2022
Subjects
laser seam tracking
Measurement by laser beam
pipe welding
Pipelines
Reflection
Sensors
Spot welding
Surface emitting lasers
swing mirror
Tracking
vision sensing
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Summary:Based on the principle of laser triangulation measurement, a laser welding seam tracking sensor is developed to track U-shaped, V-shaped and flat bottom grooves of pipeline welds in real time. Aiming at the problems of reflection of pipeline welding groove and strong welding arc, which affect the accuracy of U-shaped groove feature recognition, a laser welding seam tracking sensing technology based on swing mirror is developed. The image sensor collects the weld features of the spot-shaped spot area in a cycle, and connects to form a cross-sectional weld feature, which can effectively improve the signal-to-noise ratio of the weld feature identification signal. the actual machine test of pipeline weld tracking is carried out. In the identification test of U-shaped, V-shaped, flat bottom groove, extremely deep and wide weld (40mm depth&30mm width) and extremely deep and narrow weld (40mm depth&12mm width), the sensor has good recognition accuracy and stability.
DOI:10.1109/OGC55558.2022.10050920