Development of Weld Seam Recognition System Based on Line Profile Sensor

welding seam recognition is key issue of intelligent welding. Aiming at such requirement, we provide a method to build a compact seam identification system, which is based on laser profile sensor. A cross slide driven by servo motors is employed to adjust accurate position of laser profile sensor, and corresponding X-Y movement is controlled by STM32F103. Seam recognition algorithm and procedure using least square fitting are developed by C++. Finally, we use the welding seam identification system to have done experimental detections. The test verification shows that recognition accuracy is less than 0.5 degree, which can meet requirements for robotic welding.