基于激光测距的焊缝表面外观检测.pdf

诚信承诺书 本人郑重承诺：本人承诺呈交的毕业设计《基于激光测距的 焊缝表面外观检测》是在指导教师的指导下，独立开展研究 取得的成果，文中引用他人的观点和材料，均在文后按顺序 列出其参考文献，设计使用的数据真实可靠。 本人签名： 日期： 2020 年 5 月 16 日 基于激光测距的焊缝表面外观检测 摘 要 焊接表面的外观是控制焊接质量的最基本，最重要的组成部分。各个行业对此 都有明确的标准。本文测量钢板对接焊缝焊缝表面几何形状的外观。 为此，本文将使用激光测距的原理来设计一个系统，以准确地测量钢板对接焊 缝表面的外观。 阅读大量资料，分析研究各种激光测距方法的原理、优缺点、使用方法，并根 据所需的准确度、精度、适用范围选择一种合适的激光测距模块。系统的驱动部分 选择合适的驱动器和精密的步进电机。设计一个稳定，可靠且合适的激光扫描支架 ，并作为搭建扫描测量系统的平台。电机由Labview和myRIO控制进行测量。通过比 较图像和实际操作，验证了自动激光测量焊缝表面外观的有效性和准确性。 关键词：激光测距、焊缝表面外观、步进电机、LABVIEW 、myRIO Weld surface appearance detection based on laser ranging Abstract The appearance of the welded surface is the most basic and important component to control the quality of the welding. There are clear standards for this in all industries. This paper measures the appearance of the geometry of the surface of the steel plate butt weld weld. Therefore, we designed a system for accurately measuring the appearance of the butt weldsurface of the steel sheet using the principle of laser ranging. Read a large number of subjects, analyzes and study principles, advantages and disadvantages, and use different methods of a leasehold field, and select a suitable module of a leasehold field by the accuracy, accuracy and range of required apps. The drive part of the system selects the right driver and a precision stepper motor. Design a stable, reliable and suitable laser scanning stand and serve as a platform for building a scanning measurement system. The motor is measured by Labview and myRIO control. By comparing images and practical operations, the validity and accuracy of automatic laser measurement of the surface appearance of welds are verified. Keywords: Laser ranging 、Weld surface appearance 、Stepper motors 、Labview 、myRIO