基于DSP的USB数据采集系统设计

摘要

针对传统数据采集方法受计算机硬件资源限制、传输速度低等不足,设计了以CY7C68013A为核心的数据采集系统,实现高速数据采集与传输,并详细介绍系统软、硬件设计。CY7C68013A工作在SlaveFIFO工作模式下,主控芯片以访问外部存储的方式访问CY7C68013A的端点。主机应用程序通过发送命令给主控芯片,控制数据的采集及传输过程。本系统硬件扩展方便、编程简单、开发周期短。通过实验验证,系统采集到的数据与实际输入信号相符合,并能很好地还原出原始信号,满足设计要求。%A data acquisition system has the chip-CY7C68013A as the core is designed for the computer hardware limit and low transmission problem of the traditional data acquisition method. It can realize high speed data acquisition and transmission. The hardware and software design of the system is introduced systematically. The main control chip can access to CY7C68013A＇s endpoint by the same way as access to external memory, since the CY7C68013A work on the Slave FIFO mode. The host control data acquisition and transmission process by sending commands to the main control chip. The system has the following advantages： easy to expand, programming is simple and short development cycle. The system met the design requirement after test.