Laser-PSD视觉焊缝自动跟踪系统的研究  

Study on the Laser-PSD Vision Seam Tracking System

作　　者：刘春[1] 文晓江[1] 赵琳[1] 陈武柱[1] 车成文 李宪军 

机构地区：[1]清华大学 [2]渤海造船厂

出　　处：《中国机械工程》2002年第20期1783-1785,共3页China Mechanical Engineering

基　　金：中国船舶工业总公司攻关资助项目;清华大学 986资助项目 (0 1 2 - 1 0 1 0 5)

摘　　要：设计了一种扫描式 Laser-PSD视觉焊缝自动跟踪系统 ,该系统采用激光二极管作为信号光源、1维位敏元件 (PSD)为接收器件组成视觉传感器 ,并采用单片机作为中央控制器。传感器在坡口上方横向扫描 ,获得坡口的 2维图形 ,经单片机系统处理计算得出高低、左右偏差 ,控制焊炬的高低、左右位置 ,实现了对大坡口埋弧自动焊全过程的有效跟踪。通过使用 ,证明该系统跟踪精度高 ,抗干扰能力强 ,工作可靠 ,能直观显示坡口图像和跟踪状况 ,操作方便 。To meet the requirements of automatic seam tracking in the submerge-arc welding of a large pressure hull, an automatic seam tracking system with scanning Laser-PSD sensor has been developed. The sensor in the system consists of a Laser diode used as a light source, one-dimensional position-sensitive-detector (PSD) used as a receiver and the MCS-51 single-chip-computer used as central controller. 2-D image information of the groove is acquired when the sensor scans rectilinearly over the groove. The signal of the sensor is processed by single-chip-computer system, and then the horizontal and vertical deviations can be obtained. In the practical industrial applications, it has been proved that the system has many advantages: high precision, strong anti-disturbance ability, high reliability, and directly displaying the groove image and statement of tracking, all of which strongly satisfy the conditions of the welding production.

关 键 词：Laser-PSD视觉焊缝自动跟踪系统 激光 位敏元件 自动增益控制 焊缝自动跟踪 

分 类 号：TG409[金属学及工艺—焊接]