可调光栅投影控制仪设计.doc

重庆大学本科学生毕业设计（论文） 可调光栅投影控制仪设计 学生：毕伟镇 学号指导教师：汪涛 专业：电子信息科学与技术 重庆大学物理学院 二O一五年六月 Graduation Thesis of Chongqing University Adjustable grating projection controller design Undergraduate: BI WEIZ HEN Supervisor: Wang Tao Major: Electronic Information Science and Technology College of Physics of Chongqing University Chongqing University June 2014 摘 要 在三维形貌测量过程中，有时候需要根据实际的需求，产生各种频率，相位，方位的光栅，传统的投影栅线条纹的制作方式是将制作好的光栅放于光源前面而形成，这种方法虽然设备简单，但局限性很多，不能实现依照被测物体得几何形状、尺寸以及测量的角度、方位、以及间距来自动调节实验装置的投影和接收系统，使得灵活性比较差，同时不能根据实验额需要来改变光栅的相位和周期。 单片机具有非常灵活的控制机制以及强大的数据处理能力，并且其编程采用C语言，使用起来既能达到实验的要求，又非常的方便。FPGA的VGA接口提供多种分辨率的显示方式，能够根据实验的要求进行编程，显示出所需要的光栅。 结合目前光栅测量的不够机动性和单片机的智能性进行深入的研究，通过单片的的多种控制机制，来实现对光栅不同的测量的位置，光栅周期，频率等不同参数下的测量效果，来增加光栅测量形貌的灵活性和可持续性。然后通过FPGA的VGA接口投影出来。实验最终投影出了几种简单的光栅，达到了最初的实验设想。 关键词：可调光栅，单片机，FPGA, VGA ABSTRACT In the three-dimensional shape measurement process, sometimes according to the actual needs, resulting in a variety of frequency, phase, orientation of the grating, the traditional production methods fringe projection gate line is to make a good grating placed in front of the light source is formed, which Although the device is simple method, but many limitations, can not be achieved in accordance with the geometry of the object was, and measuring the size of the angle, orientation, and spacing of the experimental apparatus to automatically adjust the projection and reception system, so that relatively poor flexibility, while not According to the experimental phase and the amount required to change the period of the grating. ??SCM has a very flexible control mechanism and powerful data processing capabilities, and its programming using C language, using them can achieve the requirements of the experiment, but also very convenient. FPGA VGA port offers a variety of display resolutions, it can be programmed to test the claim, showing the required grating. ??Combined with the current lack of mobility and grating measurements SC