高速大容量数据采集卡的研制

Research of High Speed and Mass Storage Data Acquisition Card

提出一种高速大容量数据采集卡的硬件方案,并对系统的结构及工作原理进行说明。方案选取高性能ADCAT84AS001实现数/模转换,使用DDR内存条进行数据存储,并通过PCI接口与计算机互连,可通过软件界面对采集卡的工作状态进行控制。经过调试,系统可稳定运行,最高采样速率达500 MHz,存储容量为256 MB,对于雷达对抗及测量领域具有一定的工程应用价值。

This paper proposes a hardware design plan of high speed and mass storage data acquisition card. The structure and work principle of the system are illustrated, high performance ADC AT84AS001 to realize digital - to - analog conversion and DDR memory- chip to complete data storage is chosen. Then PCI is used to connect the card with the computer. In this way,the operation mode of the card is controlled by software graphical user interface. The system runs stable after debug,it can provide 500 MHz sampling rate and the storage capacities is 256 MB. In a word,this system can be applied in the field of radar and surver.