基于FPGA的采样率可编程多路数据采集系统

Sampling Rate Programmable Multi-channel Data Acquisition System Based on FPGA

在多路数据采集系统中,各数据通道的采样率由下载到可编程逻辑器件中的程序决定,无法根据不同信号的特点在不重新下载程序的情况下改变。介绍了一种利用外接E2PROM实现对各信号通道采样率进行控制的设计实例,它主要采用可编程逻辑器件以及串行E2PROM实现。整个系统包含应用软件、USB控制台和数据采集记录模块。由于采用USB接口作为计算机和数据采集记录模块的通信接口,使得对数据采集记录模块的控制变得十分方便。

In the multi-channel data acquisition system,sampling rate of each channel is decided by the program which has been download into the programmable device.They can＇t be changed with the characteristic of each signal unless download a new program.Introduced an example of design in which the sampling rate can be controlled by using an external E2PROM.The design primary used programmable device and serial E2PROM.The entire system contained application software,USB console,data acquire and record module.Using USB port to communicate between the computer and the data acquire and record module made it easier to control the data acquires and record module.