一种多通道数据采集系统的设计与实现

摘要

A multi-channel signal acquisition system based on ARM and FPGA is introduced.The paper describes the overall structure,hardware circuits and logic design of the system detailed.FPGA chip is de-signed as the main controller of the system,it controls the AD7892 chip and the electronic switch to col-lect sixteen signals circulated.As the control processing unit,ARM controls the FPGA chip,and commu-nicates with FPGA and the superior machine,monitoring the collected signals in real-time.Test results show that the system can realize the acquisition and process of 16 channels of analog signals with high precision,meet the requirements of design.%针对一种基于ARM和FPGA的多通道数据采集系统,详细介绍了系统设计方案、功能电路及逻辑设计方法.系统以FPGA为控制核心,控制AD7892模数转换器和电子开关,完成16通道模拟量的循环采集.ARM处理器作为CPU,完成对FPGA的控制,并与上位机通信,实时监控各路信号.测试结果表明,系统实现了对多路模拟信号的高精度采集和处理,满足设计需求.