虚拟示波器波形存储和传输系统设计
虚拟示波器波形存储和传输系统设计(任务书,开题报告,论文说明书11000字)
摘要
在科学技术发展和时代进步的推动下，新型的电子信息技术应运而生，传统的仪器工业也随之经历一场重大变革。由于现在的计算机拥有高效的处理功能和优异的显示能力，让它能够大大提升仪器的性能。虚拟仪器是新型仪器的代表，它摆脱了传统仪器理念的禁锢，结合强大的软件系统和硬件系统，以pc技术和测量技术为基础，结合性能优异的模块化硬件和软件实现多种数据的测量、测试和各种自动化方面的应用，虚拟仪器成本低、使用简单方便，深受设计师们的青睐，在仪器领域得到了十分广泛的运用。
虚拟示波器完美地应用了虚拟仪器技术，是虚拟仪器的重要体现。虚拟示波器通过pc机和相关通信接口电路来完成波形信号的采集。它的图形用户界面可以完美替代传统示波器的操作面板，实现传统示波器所拥有的相关功能。虚拟示波器彻底贯彻了“软件就是仪器”的思想，由计算机软件替代传统仪器的硬件部分，同样能实现数据分析与显示功能，而且使用更方便，功能更强大。这样大大的减轻了示波器用户的工作量，只需要一台电脑即可完成示波器所有工作，提高了工作效率。
本文基于QuartusⅡ软件，主要设计一款应用于虚拟示波器的存储与传输系统。虚拟示波器系统要将高速数据采集系统所输出的波形信号传输给计算机进行处理分析，首先需要把数模转换芯片输出的波形数据放入存储器进行缓存，然后通过单片机控制信号从存储器中读出波形数据再传输到PC机。下位机硬件系统和计算机通过一个通信接口来完成数据的传输。本篇论文采用FPGA、单片机等作为系统核心技术，使用FPGA芯片内部的RAM存储单元，结合地址控制器，二选一选择器等单元构成存储模块。单片机作为核心控制，结合数据读写模块，再配合USB传输协议可以实现数据的读写和传输功能。各模块相互结合，实现虚拟示波器波形数据的存储和传输功能。 [资料来源：https://www.doc163.com]
关键词：虚拟示波器；QuartusⅡ；USB；FPGA；存储；传输
Abstract
In promoting the development of science and technology and the progress of the times, new electronic information technology came into being, traditional instrument industry have also experienced a great change. Because now the computer has efficient processing functions and excellent display capabilities, let it can greatly enhance the performance of the instrument. Virtual instrument is representative of the new instrument, it is free from the confinement of the concept of the traditional instrument, which combines the powerful software system of PC and hardware system, based on PC technology and measurement technology based, combined with performance excellent modular hardware and software measure of a variety of data, test and a variety of automated applications, virtual instrument cost is low, the use Simple and convenient, favored by designers, in the field of instrumentation has been very widely used.
Virtual oscilloscope perfectly applied virtual instrument technology; virtual instrument is an important manifestation. Virtual oscilloscope through the PC and the communication interface circuit to complete the signal waveform acquisition. Its graphical user interface can perfect substitute for traditional oscilloscope operation panel, traditional oscilloscopes have related functions to achieve. Virtual oscilloscope thoroughly implement the idea of "software is the instrument", the hardware of traditional instruments is replaced by computer software, also can realize data analysis and display, and the use of more convenient, more powerful. This greatly reduced the user workload, only need to a computer to display the wave all the work, improve the work efficiency.
[来源：http://Doc163.com]
This paper based on Quartus II software, the main design an application in the storage and transmission system of virtual oscilloscope. The virtual oscilloscope system to the high-speed data acquisition system output waveform signal transmission to the computer for processing and analysis, first of all need to the digital to analog conversion chip output waveform data into the memory cache, and then through the microcontroller control signal from the memory read waveform data to be transmitted to the PC. The lower computer system and the computer through a communication interface to complete the data transmission. This paper adopts FPGA technology, SCM as the system core technology using FPGA chip RAM Storage unit, combined with the controller address; choose a selector unit composed of the memory module. Microcontroller as the core control combined with data reading and writing module, coupled with the USB protocol can achieve data read and write and transmission functions. Each module with waveform virtual display wave waveform data storage and transmission functions.
Key Words：Virtual oscilloscope；Quartus II；FPGA；USB；storage system；Transmission system
[来源：http://www.doc163.com]
目录
第1章 绪论 1
1.1课题的背景及意义 1
1.2本论文的内容和结构安排 2
第2章 虚拟示波器概述 3
2.1虚拟仪器技术 3
2.2虚拟示波器 3
2.2.2虚拟示波器的组成部分 3
2.2.3虚拟示波器工作方式 4
2.2.4 虚拟示波器的优点 4
第3章 总体方案分析 5
3.1 FPGA技术的应用 5
3.1.1 关于FPGA 5 [资料来源：www.doc163.com]
3.1.2 FPGA在本次设计中的应用 5
3.2模块设计方案的选择 5
3.2.1虚拟示波器的存储模块设计方案 6
3.2.2虚拟示波器的传输模块设计方案 6
第4章 系统模块电路设计 7
4.1时钟模块设计 7
4.3数据读写模块设计 7
4.2数据存储模块设计 9
4.4单片机模块设计 11
4.5通信模块 12
4.5.1USB接口技术 12
4.5.2接口芯片 13
4.4.3USB软件程序设计 15
第5章 测试与仿真 18
5.1 QuartusⅡ概述 18
5.2 QuartusⅡ仿真 18
5.2.1时钟模块仿真 18
5.2.2写数据模块仿真 19
5.2.3存储模块仿真 19
5.2.4USB接口测试 20
第6章结论 22
6.1总结 22
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6.2展望 22
参考文献 24
致谢 25
[资料来源：http://Doc163.com]