模拟量数据采集EDA论文.doc

模拟量数据采集 摘要 本次课程设计是一种基于FPGA技术的模拟数据采集的设计方案，本文所提出的一种基于FPGA技术的模拟量采集，利用FPGA的I/O端口多，且可以自由编程支配、定义其功能的特点，配以VHDL编写的FPGA内部执行软件，能很好地解决采集的信号路数多的问题。因为用VHDL编写的执行软件内部对各组数字量是按并行处理的，而且FPGA硬件的速度是ns级的，因此本设计能实时地、快速地监测信号量的变化。本设计鉴于FPGA和VHDL语言自身的特点，本设计具有较好的扩展性，在监测和控制系统中也具有一定的通用性。系统主要包括：FPGA芯片区、多路选择与A/D采样电路、ADC0809芯片等几部分。 关键词：FPGA A/D采样 模拟量采集 VHDL语言设计 Abstract The curriculum design is an FPGA-based analog data acquisition technology in the design of the proposed FPGA-based analog technology, digital acquisition and processing system using FPGAs I / O ports and more, and be free programming control, the definition of the functions of the characteristics of the FPGA with VHDL within the preparation of the implementation of software, can be collected very good solution to the problem of multi-signal approach. Because VHDL implementation of the software prepared by the internal volume of the set of figures is based on parallel processing, and FPGA hardware ns speed class, so the design in real time, monitoring of fast changes in the volume signal. In view of the FPGA and VHDL design language of its own characteristics, the design of better scalability, in the monitoring and control system also has some versatility. System mainly includes: FPGA chip area, multi-channel selection and A / D sampling circuit, ADC0809 chip such as several parts. Keywords: FPGA A / Dsampling Analog Acquisition VHDL Language Acquisition Design 目 录 1 绪论…………………..……………………………………………………………………1 2 课程设计内容及要求……………………………………………………………………..2 2.1 课题设计内容………………………………………………..………………………2 2.2 课题设计要求…………………………………………………………………..……2 3 课程设计方案及原理…………...……………………………….………………………..3 3.1 课程设计总体方案…………………………..………………………………………3 3.1.1 设计思路…………………………………………………………………….…3 3.1.2 设计流程图…………………………………………………………………….3 3.2 课程设计原理………………………………………………………………..………4 3.2.1 模拟量采集设计原理……………………………………………………….…4 3.2.2 FPGA应用原理……..………………………………………………………….4 3.2.3 VHDL应用原理………………………………………………………………..5 4 课程设计步骤及过程……………………………