基于DSP的V/F式数据采集系统设计

Design of a VFC Data Sampling System Based on the CAP Unit of DSP

首先介绍了DSP中集成捕获单元(CAP)的特点,灵活应用CAP的功能,将它和压频转换器(VFC)相结合,构成了一个新的数据采集系统,并分析了其模/数转换误差。该系统不仅具有以往的V/F式数据采集易于信号隔离、抗干扰性强的特点,而且硬件构成简单,很大程度地节约了成本,简化了硬件电路设计。

Based on the feature of the capture unit （CAP） of DSP, a new data sampling system constructed by the CAP and VFC is introduced. The system has some merits of the classic V/F data sampling, such as convenience for signal isolation, economic in long -distance signal transmission.Furthermore, the structure of this system is simple, the hardware design is easy and the cost is saved.