基于FPGA的36通道同步数据采集存储控制器设计与实现

36-channel Synchronal Data Acquisition and Storage Controller Based on FPGA

在许多工业检测场合,不仅要求多通道,而且对采样速率及相位有较高要求,目前市面上的基于多路转换器的多通道数据采集卡是无法满足这种需求的。介绍了一种基于FPGA的36通道同步数据采集卡中的数据采集存储控制器设计与实现,该控制器主要由FPGA实现的两个子控制器组合而成,来完成控制6片AD7656同时采样和把采样数据实时地转存到由SDRAM组成的本地大容量存储器中的功能,采用Modelsim对该设计进行了功能仿真。

This paper introduces a design and implementation of data acquisition and storage controller based on FPGA 36 channel synchronous data acquisition card.The controller is mainly composed of two sub controllers which are realized by FPGA.The controller can complete the control of 6 AD7656 simultaneous sampling and real-time data transfer to the lo- cal large capacity memory composed of SDRAM.