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1、 硕士学位论文硕士学位论文基于基于 USB 的便携式数据采集系统设计的便携式数据采集系统设计 摘要I论文题目：基于论文题目：基于 USB 的便携式数据采集系统设计的便携式数据采集系统设计学科名称：电话与系统学科名称：电话与系统摘摘 要要传统的数据采集卡普遍采用PCI、ISA等标准接口，基于这些标准接口的采集卡有不便于携带、安装复杂、可扩展性差等问题，它已不能满足科研和生产的实际需要。通用串行接口USB作为一种新型的串口通信标准，具有传输速率高、可扩展性好、即插即用、使用灵活等特性，很好的弥补了传统采集卡接口的缺陷。本文结合USB的传输优势和FPGA 的高效性能，设计了一种基于USB的便携式数据
2、采集系统。文中首先简单的对USB总线的特点以其相应的体系结构进行了介绍，然后对硬件电路、软件程序以及系统测试几个方面进行了深入论述。在硬件设计方面：选用的系统硬件主要由模数转换模块、FPGA主控制器模块、USB接口模块以及电源模块构成；根据系统要实现的功能以及芯片的工作方式完成了电路的连接，同时完成了系统的原理图设计和PCB图的绘制。在软件设计方面：根据系统的设计要求，重点研究了三部分内容：FPGA控制程序、USB固件程序以及客户端应用程序。同时详细介绍了各部分软件的具体设计思想，并给出了相应的程序流程图与调试结果。最后，结合硬件和软件对整个系统进行了最终测试，并给出了测试结果和分析。结果表明
3、：该数据采集系统的功能符合设计要求，能够满足一般工业现场对数据采集系统便携性、低功耗以及对数据传输速度要求较高的任务需求。关键词关键词：数据采集；USB2.0；FPGA；固件程序；应用程序西安理工大学硕士学位论文IITitle: PORTABLE DATA ACQUISITION SYSTEM DESIGN BASED ON USBMajor：Circuits and systems Name： WenHua He Signature: Supervisor：Prof. ShuiYu WANG Signature: AbstractTraditional data acquisition ca
4、rd is commonly used standard interfaces such as PCI 、ISA，but the acquisition card is not easy to carry, install and expand. So it can not meet the actual needs of the research and production.The Universal Serial interfaces USB as a new standard of serial communication, it has a high transmission rat
5、e, good scalability .At the same time,it is easy to plug and play, variety in use. So it is compensated for the defects of traditional capture card interface.In this paper, along with the efficient performance of the transmission advantage of the USB and FPGA, a portable data acquisition system base
6、d on USB2.0 have designed and implemented .The paper first briefly describes the architecture and features of the USB bus, then conducted in-depth discussion on aspects of the hardware circuit, software programs, and system testing.In the Hardware：We mainly completed AD converter circuit design, FPG
7、A host controller peripheral circuit design,the USB interface circuit design and the power module design. The connection between each part of the chip operating modes and systems to achieve the function. Complete system schematic design and PCB diagram of the hardware circuit system,In the software：
8、According to the design requirements, we focus on the three sections: the FPGA control-program design, USB firmware design and client application program design.At the time,describeing in detail the various parts of the software design ideas.We also give the corresponding program flowchart and debug
9、ging results.At last ,combination of hardware and software , testing the entire systemis was tested and 摘要IIIthe test results and analysis were gived. The results showed that the data acquisition system can meet the design requirements which the general industrial field data acquisition system porta
10、bility, low power consumption and higher data transfer speeds .Key words: Data acquisition; USB2.0; Firmware; Application目录I目目 录录 1 绪论 .1 1.1 研究背景与意义 .1 1.2 国内外研究现状与趋势 .1 1.3 本文研究的主要内容 .2 2 USB 简介.3 2.1 USB 总线的特点.3 2.2 USB 总线结构.3 2.3 USB 设备的开发流程.5 3 系统总体设计 .7 3.1 系统的性能指标 .7 3.2 系统方案的确定 .7 3.3 硬件构成 .8 3.4 软件构成 .9 4 系统硬件电路的设计与实现 .11 4.1 FPGA.
