基于FT2232H的高速数据采集系统设计.doc

基于FT2232H的高速数据采集系统设计 王曙1 向歆夷 2 林培群3 徐建闽4 （1.华南理工大学 土木与交通学院，广州 510510； 2.华南理工大学 自动化科学与技术学院，广州 510510； 3.华南理工大学 土木与交通学院，广州 510510； 4.华南理工大学 土木与交通学院， 广州 510510） 摘要：针对各种虚拟仪器对传输速率和开发难度的要求，设计了一种基于新型USB2.0高速接口的虚拟仪器采集系统。本系统采用FTDI公司第五代USB2.0接口芯片FT2232H,利用其异步FIFO接口与STM32F103的FSMC接口相互传输数据，使用Labview设计上位机界面，调用提供的动态链接库DLL和MCU固件库,可快速实现高速接口的数据传输，STM32F103内部集成了12位高精度A/D转换器，外部信号经过处理后采集回数据并通过USB接口传送至PC，达到了降低开发难度、增强了系统稳定性的目的。 关键词：USB2.0； FT2232H；异步FIFO；LABVIEWTP216+.1 文献标识码：A Design of high-speed data acquisition system based on FT2232H Wang Shu1 Xiang Xinyi2 Xu Jianmin3 Lin Peiqun4 ( 1. School of Civil Engineering and Transportation, South China University of Technology， Guangzhou 510510; 2.School of Automation Science and Technology, South China University of Technology， Guangzhou 510510; 3.School of Civil Engineering and Transportation, South China University of Technology， Guangzhou 510510 4.School of Civil Engineering and Transportation, South China University of Technology， Guangzhou 510510) Abstract: Based on the requirements of transmission speed and development difficulty of various virtual instruments, an acquisition system on basis of new USB2.0 high-speed interface has been designed. In order to transmit data quickly among high-speed interfaces, this system employs the interface chip FT2232H of FTDI Company’s fifth generation USB2.0, using its asynchronous FIFO interface to transmit data to FSMC interface of STM32F103, and applies Labview to design PC interface as well as making use of the available Dynamic Link Library (DLL) and Firmware Library MCU. The STM32F103 includes 12 bit high-precision A/D convertors which can process the external signals, collect those data and transmit them to PC through USB interface. In this way, the aim of reducing the development difficulty and strengthening the system stability can be achieved. Key words: USB2.0; FT2232H; Asynchronous FIFO; Labview; FSMC 0引言 近年以来，由于工业技术的发展，生产技术的不断进步，需要测试内容繁多，且电子技