摘要如今大多数钢铁厂的方坯连铸都是以定尺来定重，其原理是根据长度来确定一个钢坯。然而因坯料的截面积及坯料的密度随结晶器老化程度及拉速的变化而变化，致使定尺剪切控制方式下的钢坯存在质量误差。若方坯重量偏低，达不到客户的要求，便会成为废品；若方坯重量偏高，则会造成浪费。所以如何开发在连铸机锻钢过程中，对钢坯的截面面型以及位置进行检测的技术，便是这个课题的重点。在此研究背景下，我们要使用一种基于结构光图像法和阈值法的手段对方坯面型在线实时监测。
本文主要阐述了这个方案的基本原理，即对于断面面积的测量计算，以及其剪切长度的换算，然后介绍了相关线型激光器，以及CCD摄像机的结构参数，以及整体装置的构架，并对面型转换做了研究，接着分析了本方案中所需要采用到的各种图像处理方法。在文章最后做出了总结，讨论可能存在的误差以及具体实施细节等方面，并对其进一步的开发研究做出了展望。
关键词  连铸方坯  定尺  定重  结构光图像法19131
毕业论文设计说明书（论文）外文摘要
Title    Application of optical technology in Online Cut-weight
    Shearing Process of Billet
Abstract
Today, most of the steel billet casting plant is scheduled to be re-cut to length, ie the length to determine a billet.However, due to the cross-sectional area of  the blank and blank density with the age of the mold and the casting speed of change, resulting in length billet shearing quality control in the presence of errors.If the billet is low weight, whole billet buyers will not be accepted into the waste; If billet high weight, some buyers will not do this more out of paying, so it will need by the loss manufacturers to bear.So in the process of continuous casting machine forged steel, cross-section of the billet surface can type and location detection technology, is the focus of this issue.Under this background, we want to use a method based on structured light image thresholding method and the surface of the billet on-line real-time monitoring.
This article focuses on the basic principles of the program, that is, for the calculation of cross-sectional area measurements, as well as the translation of the shear length, and then introduces the related linear laser, and structural parameters of the CCD camera, as well as the overall framework of the device, and the opposite type conversion to do the research, then analyzes the need to adopt this scheme to various image processing methods.In conclusion, the article made a final summary of the discussion and the specific implementation details and other errors that may exist, and make the prospects for its further development and research.

Keywords  Billets  Cut-length  Cut-weight   
          Structured light image method
目   次
1  引言    1
1.1  课题研究的背景    1
1.2  本文主要完成的工作    5
2  器件的参数及其构成    6
2.1  线型激光器    6
2.2  CCD摄像机    8
2.3  本章小结    9
3  具体方案现场设计    10
3.1  方案设计    10
3.2  改进方案    12
3.3  本章小结    12
4  体积法定重剪切原理    13
4.1  方案选择    13
4.2  截面面积的测量    13
4.3  定尺剪切原理    18
4.4  本章小结    20
5  图像处理    21 光学技术在钢坯定重剪切工艺中的应用研究:http://www.751com.cn/wuli/lunwen_10364.html