基于NIOSII的高速多路数据采集系统

摘要

A System on Programmable Chip (SOPC) based on FPGA was designed to realize the high—speed and multi—channel data acquisition which satisfied the requirement of complex battlefield environment for data acquisition. The method of designing NIOSII embedded system and its peripherals was introduced. The data acquired through sensors was converted by high— speed AD and then stored by SOPC after being buffered and formatted. The use of SD card makes it easy for data read and process and memory space extension. Experiments and results all show that the system can collect multi—channel data reliably and work steadily.%针对复杂战场环境对数据采集的需求,利用FPGA构建了可编程片上系统(SOPC),实现了高速多路数据采集,详细论述了NIOSII嵌入式系统以及其外设的设计方法;传感器采集的数据经过高速AD转换后,由SOPC系统进行数据缓冲和格式转换并存入存储器,SD卡的使用方便了数据的存取、处理和存储空间的扩展;实验结果表明,该系统能够可靠、准确地对多路信号进行采集,且运行稳定.