数据采集系统 USB 接口的实现自动化专业学生 XXX指导老师 XXX摘要：USB 通用串行总线是一种新型的微机接口法律规范，随着客户对系统的数据采集速度要求的不断提高，USB 以其易于扩展、速度快、方便使用等优点越来越多的应用于数据采集系统中。本文论述了一种基于 USB 总线的数据采集系统的设计方法，通过对 USB 协议和设备构架的充分理解，对以单片机 AT89C52 和 USB 接口芯片 CH372 为核心的数据采集系统进行了硬件设计，并在此设计的基础上给出相应的电路原理图。硬件设计主要解决的是 CH372、TLC549 和 TLC5620 与单片机之间的接口电路问题；USB 软件设计由 USB 设备固件程序、设备驱动程序以及主机应用程序三部分组成。本系统充分展现了 USB 总线安装方便、使用方便、功能齐全等优点。关键词：USB 通用串行总线；单片机；数据采集系统Realize of Data Acquisition System Based on USBStudent majoring in Automation XXXTutor XXXAbstract：USB Universal Serial Bus is a new type of computer interface specification. With customers on the system data acquisition speed requirements continue to increase, more and more USB was used in data acquisition systems with its easy to expand, fast, easy to use, etc.. This paper discussed a USB-based data bus acquisition system design approach, through the USB protocol and device architecture fully understanding, AT89C52 micro controller and USB interface chip CH372 as the core of the data acquisition system hardware design, and the corresponding circuit diagram on the basis of this design. The hardware design is mainly to solve the problem of the interface circuit CH372, TLC549 and TLC5620 communicated with micro controller; USB software was designed by the USB device firmware, device drivers, and the host application consists of three partsThe system has the advantage of USB bus to install, easy to use, full-featured, etc..Key words：USB bus；Data collection；MCU1 绪论1.1 课题背景和讨论意义在工业生产中，往...
