【作者】 贾宝金；

【导师】 王宝珠；

【作者基本信息】 河北工业大学 ， 通信与信息系统， 2007， 硕士

【摘要】 数据采集技术是以传感器、信号测量与处理、微型计算机等技术为基础而形成的一门综合应用技术,主要研究信息数据的采集、存储、处理以及控制等,涉及模拟信号调理、模拟信号数字化、数字信号处理等,具有很强的实用性。USB技术以其支持热插拔和即插即用、占用系统资源少等特点迅速得到了广泛的应用。USB2.0凭借其480Mbps的理论传输速度,更是得到了人们的青睐。论文基于课题的研究内容,给出了一种用USB2.0总线技术解决数据采集系统接口问题的实施方案。文中首先深入研究了USB的体系结构,然后结合提出的方案,较为全面地介绍了系统的硬件和软件设计。其中硬件部分具体描述了USB2.0控制器CY7C68013和模数转换芯片MAX125的接口设计,同时也给出了各种电源转换的实现方法。在软件部分,通过分析EZ-USB的固件编程框架,阐述了CY7C68013在GPIF工作模式下的波形设计过程及其数据通信流程;驱动程序是系统硬件和客户应用程序之间通信的桥梁,文中介绍了USB的WDM功能驱动程序设计过程;最后,设计了数据采集和保存的应用程序,并对其功能做了解释。论文所设计的基于USB2.0总线技术的数据采集系统具有14位分辨率,单通道250KHz采样频率和30Mbps传输速率。系统不仅实现了数据的采集、传输和保存数据的功能,并且具有热插拔、即插即用、便携式的特点,达到了预期的效果。更多还原

【Abstract】 Data acquisition technology is a synthetical application technology based on technologies of sensor, signal measure and disposal and computer, and it studies on data acquisition,memory, disposal and control, etc., it includes analog signals modulation, analog signals digitalization, digital signal processing and so on, so it is greatly useful. USB (Universal Serial Bus) technology is widely used because of the attributes of hot-plug-in, plus-and-play, engrossing less system resource. The USB2.0 has been paid much attention depending on the theory transfer rate of 480Mbps.Based on the research, the solution to the data acquisition system was put forward with the USB2.0 technology in the paper. With the analysis on the subject, the architecture of the USB was deeply analyzed firstly, and according to the scheme of the data acquisition system, the detailed hardware and software design was introduced. In the hardware section, the interface between the CY7C68013’GPIF (General Programmable Interface) and the A/D converter was introduced, and the various DC-DC circuit were embodied. In the software section, the“wave descriptor”and the whole communication process of CY7C68013 in the GPIF master mode were expounded; and the testing result of the firmware was listed at the end of the firmware part; Function driver is the bridge between hardware and host software, and the design process of the WDM (Windows Driver Mode) driver for the USB was introduced here; Finally the application software used to exhibit the curves and save data was designed, and the functions of the software were also explained.The data acquisition system based on the USB 2.0 technology has 14-bits resolution, single channel sample rate is 250KHZ, and the transform rate is 30Mbps. The system not only achieves the data acquisition, transforming and memory, but also has the attributes of hot-plug-in, plus-and-play, and man-pack. The expect result is achieved.更多还原