LED生产相关精密电子设备的三维视觉系统研究

发布时间：2018-06-01 10:48

本文选题：精密电子设备 + 双核DSP　；参考：《华南理工大学》2016年硕士论文

【摘要】：发光二极管(Light Emitting Diode:LED),是一种利用半导体制造技术加工的电致发光元件。LED具有效率高,低功耗、体积小、寿命长,无污染、装配便捷等优点,被称为第四代光源。LED生产工艺中要用到许多精密电子设备,针对其中的配粉机和LED插件机来分析,可以发现二者具有两点相似的需求:(1)插件机和配粉机都需要三维视觉系统来辅助控制。如配粉机中的滴管贴壁操作和插件机的LED插件的预检测和插件操作,都可以通过三维视觉系统来获取三维信息来辅助进行机械臂控制。(2)传统的三维视觉方案需要使用两个工业相机组成双目视觉系统,硬件较为昂贵,编程实时性弱小。因此需要一个实时性强、低成本的方案来实现三维视觉系统。针对以上两点需求,本文设计了一套LED生产相关精密电子设备的三维视觉系统,该系统使用双核DSP作为控制核心,使用双目视觉系统,实现三维图像信息的采集。同时由于该系统特有的双核特性,使得双目视觉的实时性得以增强。本文通过对LED生产相关精密电子设备三维视觉系统的设计,探讨双目视觉系统在精密电子设备中的应用。本文研究工作主要集中在以下几个方面:(1)根据系统的需求,对硬件进行选型和设计。硬件选型包括对处理器,传感器的选型;硬件设计主要针对主板DSP的电源模块、网口模块,以及摄像机模块进行设计说明。(2)针对三维视觉系统的任务调度进行分析,搭建基于ucos-ii嵌入式操作系统的双核软件框架。为了充分利用双核DSP芯片ADSP-BF609的双核性能,对双核通讯协议MCAPI和并行算法的设计方法进行探讨,基于多核通讯协议MCAPI针对快速傅立叶变换的并行算法进行设计和实现,并进行实验验证双核相比于单核的优越性能。(3)针对双目视觉系统的预处理中较为重要的双目标定和双目校正进行移植设计,并在本文设计的三维视觉系统上进行实验验证。(4)针对三维视觉系统的立体匹配算法进行研究,针对配粉机注胶滴管双目图像,提出并实现一种极线约束下基于canny边缘特征点匹配和区域增长匹配算法,该算法实现对配粉机注胶滴管的对应点匹配并得到视差图。
[Abstract]:Light Emitting LED is a kind of electroluminescent element processed by semiconductor manufacturing technology. It has the advantages of high efficiency, low power consumption, small size, long life, no pollution, convenient assembly and so on. Called the fourth generation light source. Led production process will use a lot of precision electronic equipment, for which the powder dispenser and LED plug-in machine to analyze, It can be found that both have two similar requirements: 1) both plug-in machines and powder dispensers need 3D visual system to assist control. For example, the dropper attachment operation in the powder dispenser and the pre-detection and plug-in operation of the LED plug-in the plug-in machine, The traditional 3D vision scheme needs two industrial cameras to form a binocular vision system, which is expensive in hardware and weak in real-time programming. Therefore, a real-time and low-cost scheme is needed to realize 3 D vision system. In view of the above two demands, this paper designs a 3D vision system for the production of related precision electronic equipment by LED. The system uses binocular DSP as the control core and binocular vision system to realize the collection of 3D image information. At the same time, the real-time performance of binocular vision is enhanced because of the unique binuclear characteristics of the system. This paper discusses the application of binocular vision system in precision electronic equipment through the design of 3D vision system for LED production of related precision electronic equipment. This paper focuses on the following aspects: 1) according to the requirements of the system, hardware selection and design. Hardware selection includes the selection of processor and sensor, the hardware design is mainly aimed at the main board DSP power module, the network interface module, and the camera module. Build a dual core software framework based on ucos-ii embedded operating system. In order to make full use of the dual-core performance of dual-core DSP chip ADSP-BF609, the design method of dual-core communication protocol MCAPI and parallel algorithm is discussed. Based on the multi-core communication protocol MCAPI, the parallel algorithm of fast Fourier transform is designed and implemented. The experimental results show that the binuclear is superior to the mononuclear. (3) the binocular calibration and binocular correction, which are important in the pretreatment of binocular vision system, are designed and transplanted. Experimental verification is carried out on the 3D vision system designed in this paper. (4) the stereo matching algorithm of the 3D vision system is studied, and the binocular image of the glue dropper of the powder dispenser is studied. An algorithm based on canny edge feature point matching and region growth matching is proposed and implemented. The algorithm can match the corresponding points of binder dropper and get the parallax map.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TP391.41;TN312.8

【相似文献】