基于FPGA的高速数据采集控制技术的研究

传统的数据采集一般都是基于CPU控制下的A/D转换及数据存储技术. 由于受到CPU指令执行时序的限制,这种控制模式很难突破1 MHz以上的数据采样速率. 本文介绍一种基于FPGA的高速A/D转换、数据采集、存储控制技术. 数据采集系统采用ALTERA公司的FPGA芯片EP4CE6E22C8N为控制器,产生高速A/D转换器及大容量SDRAM存储器工作所需要的控制时序信号,对采集速率可达100 MHz的高速A/D转换芯片AD9283进行采样控制及快速缓存处理. 整个设计在QuartusⅡ与KeilC-51平台下,运用Verilog语言及C语言描述软件编程,正确实现了AD9283转换的工作时序控制及采样的数据存储处理.

A Study on High-Speed Data Acquisition Control TechnologyBased on the FPGA

The traditional data acquisition are generally based on CPU under the control of A/D conversion and data storage technology. Due to the limitation of CPU instruction execution time series,this kind of control mode is difficult to break through the above 1 MHz data sampling rate. This paper introduces a kind of high-speed A/D conversion based on FPGA,data acquisition,storage control technology. The data acquisition system adopts FPGA chip EP4CE6E22C8N of ALTERA company as the controller,to produce high-speed A/D converter and the large capacity SDRAM memory work required sequence control signal,the collected rate of up to 100 MHz high speed A/D conversion chip AD9283 sampling control and deal with fast cache. The whole design is on the QuartusⅡ with KeilC-51 platform,by using Verilog language and C language,designs software programming,correctly implements AD9283 transformation work timing control and sampling data storage process.