摘要
给出了一种多通道高速数据采集系统的设计方法,与传统的采用ISA总线的采集卡相比,具有速度快、精度高和实时性好的特点。本设计采用了比较常用的FPGA、高速AD9051、高速FIFO等实现了高速采集系统,用DMA控制技术将采集到的数据直接存储到高速FIFO中,再由单片机将数据读出,并通过USB端口传到上位机中,最后用LabVIEW软件开发的界面进行数据的显示和分析。实验表明该采集系统有通信速度快,可靠,增益可调,可连续采样等特点,更加适合应用于测试系统。
This paper presented a method of designing multi-channel high-speed data acquisition system, which with faster speed, higher precision and better real-time compared to the traditional data acquisition card that use of the ISA bus .This design uses a relatively common FPGA, high-speed AD, high-speed FIFO and 51 MCU to form a data acquisition system .The collect- ed data is stored directly into the high-speed FIFO by DMA control technology, then microcontroller read out data and transmit- ted to PC through the USB port, PC display and process the data in the interface developed by LabVIEW .Experiments show that the acquisition system has fast communication speed, performance, adjustable gain, continuous sampling features and so on, it＇ s more suitable for the test system.
出处
《自动化与仪器仪表》
2013年第1期148-150,共3页
Automation & Instrumentation
