多通道数据采集和曲面重构系统的研究与设计

发布时间：2018-11-11 01:32

【摘要】：随着嵌入式技术的出现以及人们对降低数据采集系统成本和提高可靠性的迫切要求，基于嵌入式系统的数据采集成为了新的研究热点。本文把嵌入式技术与传感技术相结合，在基于数字位移传感器的汽车风挡玻璃质量检测系统的设计中，采用了多通道数据采集技术，并利用曲面重构技术重构实物原型。主要研究内容如下。首先，以三星公司的S3C2440A嵌入式微处理器作为数据采集系统的硬件核心处理器，设计了基于S3C2440A和容栅传感器的数据采集系统的整体方案，包括：单通道数据采集系统整体设计方案和多通道数据采集系统整体设计方案。通过详细的研究和分析容栅传感器的结构和工作原理，开发了S3C2440A微处理器和容栅传感器的接口电路，并给出了单通道和多通道数据采集系统的硬件电路设计。其次，通过对曲面重构基本原理和方法的深入了解，对比Bezier曲线曲面方法，B样条曲线曲面方法，进而提出采用NURBS方法作为系统软件曲线曲面重构的基本方法。在此基础上，研究了NURBS曲线曲面插值过程，，并给出NURBS曲线曲面插值的步骤。最后，给出数据采集系统的软件设计思想，以嵌入式C为基础编程实现数据采集；通过对NURBS曲线曲面重构基本算法的研究，利用可视化技术，采用面向对象的技术，在VC++环境下开发了一个用OpenGL实现NURBS曲线曲面重构的软件。
[Abstract]:With the emergence of embedded technology and the urgent need to reduce the cost and improve the reliability of data acquisition system, data acquisition based on embedded system has become a new research hotspot. This paper combines the embedded technology with the sensing technology, in the design of the automobile windshield glass quality detection system based on the digital displacement sensor, the multi-channel data acquisition technology is adopted, and the surface reconstruction technology is used to reconstruct the physical prototype. The main research contents are as follows. First of all, using the S3C2440A embedded microprocessor of Samsung as the hardware core processor of the data acquisition system, the whole scheme of the data acquisition system based on S3C2440A and capacitive gate sensor is designed. The whole design scheme of single channel data acquisition system and multi-channel data acquisition system is included. By studying and analyzing the structure and working principle of capacitive gate sensor in detail, the interface circuit of S3C2440A microprocessor and capacitive gate sensor is developed, and the hardware circuit design of single-channel and multi-channel data acquisition system is given. Secondly, through deeply understanding the basic principle and method of surface reconstruction, comparing Bezier curve and surface method and B-spline curve and surface method, NURBS method is proposed as the basic method of system software curve and surface reconstruction. On this basis, the process of NURBS curve and surface interpolation is studied, and the steps of NURBS curve and surface interpolation are given. Finally, the software design idea of the data acquisition system is given, and the data acquisition is realized by programming on the basis of embedded C. Based on the research of the basic algorithm of NURBS curve and surface reconstruction, a software of NURBS curve and surface reconstruction using OpenGL is developed in VC environment by using visualization technology and object oriented technology.
【学位授予单位】：燕山大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP274.2;TP368.1

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