基于自动视觉定位的激光振镜标刻系统研究

发布时间：2018-11-15 13:18

【摘要】：随着智能行业的发展,以及学科间的不断交流融合,激光打标系统也朝着智能化、小型化、一体化方向一步步迈进。工业相机以及自动定位识别嵌入式系统的引人,相当于给传统的光学振镜配上了一双“眼睛”,使整个激光打标系统将变得更加精准高效,同时也节约了大量人力成本,减少了人工操作带来的误差,并且能让其在各种特殊环境下都可以自如发挥。本论文主要研究并设计了一种加入了工业智能相机的视觉定位激光打标一体化的解决方案。整个论文包括以下几个方面:(1)研究分析了目前国内市场的主要视觉定位振镜系统中的软硬件环节,并根据它们的不足提出新的功能更完善的视觉定位振镜系统解决方案。(2)从实际应用角度出发,对各个环节所需要的硬件设备(主要包括相机,镜头,光源等)的特点进行分析比较,并总结出各个硬件环节在具体应用环境中的选取和搭建原则。(3)视觉定位算法的理论研究以及实现。提出了一种新的更加适合激光打标应用场合的视觉与激光振镜坐标匹配算法,研究了针对目标工件轮廓提取的算法并用Opencv实现。(4)完整的带有视觉定位的激光打标一体化系统的搭建。主要包括硬件与软件的匹配,多次实现结果的对比分析,以及整套工作系统的工作效率分析。本论文主要体现的技术关键有:相机拍摄图像的像素坐标与激光打标振镜坐标的匹配;对特征的识别和轮廓提取;相机、镜头、光源的集成一体化及参数选择;处理算法的实时性。
[Abstract]:With the development of intelligent industry and the continuous communication between disciplines, the laser marking system is moving towards the direction of intelligence, miniaturization and integration step by step. The introduction of industrial cameras and automatic positioning and identification embedded systems is tantamount to putting a pair of "eyes" on the traditional optical vibroscope, which will make the whole laser marking system more accurate and efficient, and also save a lot of labor costs. It reduces the error caused by manual operation and can be used freely in all kinds of special environments. This paper mainly studies and designs a kind of integrated solution of visual positioning laser marking with industrial intelligent camera. The whole thesis includes the following aspects: (1) the software and hardware of the main vision-positioning vibroscope system in the domestic market are studied and analyzed. According to their shortcomings, a new and more perfect solution of vision-positioning vibroscope system is proposed. (2) from the point of view of practical application, the hardware equipments (mainly camera, lens, etc.) are needed for each link. The characteristics of the light source are analyzed and compared, and the selection and construction principles of each hardware link in the concrete application environment are summarized. (3) the theoretical research and implementation of the vision location algorithm. A new coordinate matching algorithm for vision and laser vibroscope is proposed, which is more suitable for laser marking applications. The algorithm of contour extraction for target workpiece is studied and implemented with Opencv. (4) the integrated system of laser marking with visual positioning is built. It mainly includes the matching of hardware and software, the comparison and analysis of the multiple realization results, and the analysis of the working efficiency of the whole work system. The key technologies of this paper are: the matching of the pixel coordinate of the camera image and the coordinate of the laser marking vibroscope, the recognition and contour extraction of the feature, the integration of camera, lens and light source and the selection of parameters; Real-time processing algorithm.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TP391.41;TN249

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