一、浮点数据采集系统简介对数据采集系统来讲,动态范围是一个很重要的指标,它指的是系统允许的最大输入信号幅值与能分辨的最小信号幅值之比。目前普遍采用的12位A/D 转换器能提供72dB 的动态范围,但在很多场合仍不能满足要求。例如对地震信号等瞬态信号,在信号出现 A floating-point data acquisition system Introduction For data acquisition system, the dynamic range is a very important indicator, which refers to the system allows the maximum input signal amplitude and resolution of the smallest signal amplitude ratio. At present, 12-bit A / D converter commonly used to provide 72dB dynamic range, but in many cases still can not meet the requirements. For example, transient signals such as seismic signals appear in the signal