基于VHDL的数字电压表设计学士学位论文 沈阳理工大学.docVIP

摘 要 VHDL(即超高速集成电路硬件描述语言)是随着可编程逻辑器件(PLD)的发展而发展起来的一种硬件描述语言，主要用于描述数字系统的结构、行为、功能和接口，是电子设计自动化(EDA)的关键技术之一。 它采用一种自上而下(top-down)的设计方法，即从系统总体要求出发，自上至下地逐步将设计内容细化，如划分为若干子模块，最后完成系统硬件的整体设计。它支持设计库和可重复使用的元件生成，支持阶层设计，提供模块设计的创建。VHDL设计技术对可编程专用集成电路(ASIC)的发展起着极为重要的作用。 本电压表的电路设计正是用VHDL语言完成的，完成电压数据的采集、转换、处理、显示。此次设计主要应用的软件是美国ALTERA公司自行设计的一种Quartus Ⅱ。本次所设计的电压表的测量范围是0～5V，精度为0.02V。 关键词：电子设计自动化；VHDL；A/D采集；数字电压表 Abstract VHDL (i.e., ultra high speed integrated circuit hardware description language) is with the development of programmable logic devices (PLD) and developed a kind of hardware description language, is mainly used to describe the structure of the digital system, behavior, function and interface of electronic design automation (EDA) is one of the key technologies. It uses a top-down design method, namely from the overall system requirements, from top to down gradually to refine design content, such as divided into sub modules, finally completed the overall design of the system hardware. It supports design library and reusable components to generate, support the class design, module design creation. VHDL design technology of programmable application-specific integrated circuit (ASIC) plays a very important role in the development. The circuit of the design that use VHDL language to complete ,the voltmeter can complete collection of voltage data,conversion,treatment and display.The this time design is primarily the applied software is Quartus Ⅱ . which is made by the United States ALTERA company.This system’s range is -5v to +5v and precision is 0.02v. Keywords: Electronic Design Automation ;VHDL;A/D Acquisition digital voltage 目 录 1 绪论 1 1.1 课题背景和意义 1 1.2 FPGA设计特点 1 1.3 FPGA设计流程 2 1.4 硬件描述语言VHDL 3 1.4.1 VHDL的发展 3 1.4.2 VHDL的特点 4 1.5 VHDL语言的设计流程 5 1.6 Quartus II开发平台简介 5 1.6.1 Quartus ‖软件介绍 5 1.6.2 Quartus ‖设计输入 6 1.6.3 文本设计输入方式 6 1.6.4 Quartus II设计仿真 8 2 设计任务与要求 12 3 设计方案 13 4 各器件的选择 15 4.1 A/D转换器ADC0809控制电路 15 4.1.1 ADC0809的功能介绍 15 4.1.2 ADC0809引脚介绍 16 4.1.