电弧的激光干涉诊断中CCD微机检测系统的研究  

STUDY OF AUTOMATIC DETECTION SYSTEM WITH CCD-MICROCOMPUTER IN THE LASER INTERFERENCE DIAGNOSTICS OF ARC PLASMA

作　　者：廉金瑞[1] 李俊岳[1] 蔡国余[1] 王国秀[1] 李桓[1] 

机构地区：[1]天津大学

出　　处：《焊接学报》1989年第3期156-162,共7页Transactions of The China Welding Institution

摘　　要：本文提出了用CCD(电荷耦合)器件作为传感器,对激光干涉条纹进行自动检测并与微机联机处理,实现了激光干涉条纹图象的拍摄、检测计量、计算处理的连续化、自动化。这不但使电弧等离子体诊断过程的时间大大缩短,而且由于检测时间短,为直接采用微机实时控制焊接电弧创造了先决条件。本文介绍了CCD器件的基本结构及工作原理,并提出了用0、1码转换检测干涉条纹的方法。文中给出了电气原理图,并对实际电弧进行了检测,证明本方法切实可行.CCD is used as a sensor to detect automatically the laser interference fringes of arc plasma. The continuity and automatization of plasma interferometry process including photogrammetry, measuring and accounting have been realized. The diagnosing time of plasma is greatly shortened, and the prerequisite of real time control with microcomputer of welding arc is thus provided. This paper describes the basic structure and principle of CCD and presents the method of using '0,1' codes for transforming and dectecting fringes. The electric scheme of the system is also given. The test results of welding arc show that this method is feasible.

关 键 词：电弧 激光 干涉 微机 检测系统 

分 类 号：TG403[金属学及工艺—焊接]