一种高速数据采集卡的设计与实现

摘要

For the purpose of sampling the signal of weapon system and analyzing the data, based on the design method of the data acquisition of PC/104 bus, the data sampling card adopted the combine of A/D Convertor, CPLD and FIFO to achieve the signal continuous sampling and the data transfers controlling.The A/D Convertor achieved the sampling-holding and the analog to digital convertion, and CPLD achieved the control of data sampling and storage process.The result of experiments show that this data sampling card is easy to operate, can carry out real-time data sampling and performance is stable, and it can realize high-speed continuous data collection for tested signal.%为了实现时武器系统模拟信号的采集和数据分析,根据PC/104总线的数据采集系统的设计思想,数据采集卡以A/D转换器、CPLD和FIFO相结合来实现信号的连续采集与数据传输的控制.A/D转换器实现信号的采样保持和模数转换,CPLD实现数据采集和存储过程的控制.实验结果表明,该数据采集卡操作简单、实时性强、性能稳定,可实现对被测信号高速连续的数据采集.