热轧薄板测量系统中激光波长的优选  

Optimal selection of laser wavelengh in the measuring system of hot rolled sheet thickness

作　　者：宋殿友[1,2] 刘铁根[1] 李秀艳[1] 

机构地区：[1]天津大学精密仪器与光电子工程学院,天津300072 [2]天津理工大学电信学院薄膜电子与通信器件天津市重点实验室,天津300384

出　　处：《光电子．激光》2011年第1期99-102,共4页Journal of Optoelectronics·Laser

基　　金：国家重点基础研究发展计划资助项目(2010CB327802);国家自然科学基金资助项目(60627002;30770597);天津市科技支撑计划资助项目(09ZCKFGX01400);天津市应用基础研究计划资助项目(06YFJZJC00400)

摘　　要：研究了绿光、红光和红外光激光光源和热轧薄板干扰光对热轧薄板厚度测量的影响。利用电炉加热Cu薄片模拟生产现场热轧薄板环境,采用双光路激光三角法,在基于位置敏感器件(PSD)的调制光源和非调制光源的两种测量系统上,分别选用不同激光光源对热轧薄板厚度进行测量。实验结果表明,在两种测量系统中,测量精度均受到了热轧薄板干扰光的很大影响,而选用红光激光器比选用绿光激光器更有利于提高测量精度。The effects of the laser source（green light,red light and infrared light） and the disturbing light on the thickness measurement of hot rolled sheets were studied.The hot rolled sheet producing environment was simulated by heating the sheet copper with electric cooker,and the sheet thickness was measured in two systems with modulated laser or non-modulated laser,respectively based on position sensitive device（PSD）,using the laser triangulation method with different laser sources.The results prove that the measuring accuracy is influenced greatly by the disturbing light,and selecting the red light laser is more conducive to improve the measuring accuracy than the green light laser.

关 键 词：位置敏感器件(PSD) 激光三角法 热轧薄板 激光光源 调制 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]