双通道高速数据采集系统的设计与探讨

Design of Two-channel High-speed Data Acquisition System

介绍了一种采样频率可调的双通道高速数据采集系统的设计方法.该系统由高速A/D转换、高速缓存、频率可调与定时控制逻辑、译码和接口组成,它有效地解决了高速实时信号与接口总线的速度兼容问题.本系统具有采样频率可调、运行方式灵活等特点,可用于交通枢纽环境噪声的测量、电力测量、生物电波、爆破作业、电子学频谱分析等两路数据的实时采集,具有较好的可靠性和实用性.若采用更高性能的A/D转换器、定时器、计数器等元件,系统可升级为超高速同步的多通道的数据采集系统,适用于要求更高的场合.

This paper presents a method for two-channel high speed data acquisition system of adjustable frequency. It is combined with high speed A/D,high speed data buffering,adjustable frequency and fixed time control logic and decode interface. This design can efficaciously solves speed compatible question of high-speed timely signals and bus interface. This system has characteristic of adjustable frequency,nimble run way. It uses for timely two path data acquisition of some wink-state signals for example communication line environ noise measure ,blast work ,electric power measure, biological electric wave,electronic frequency analysis and so on. It has quitter reliability. If employing quality function A/D converter,timer,counter,it will go up to an ultrahigh-speed synchronous multi-channel data acquisition system, so as to be applicable to situation of higher requirement.