基于FPGA的自适应信号采集系统

Self-adaptive Signal Acquisition System Based on FPGA

为解决信号采集系统需要手动设置触发模式、触发电平的问题,设计一种基于FPGA(field programmable gate array)的自适应信号采集系统。根据基于FPGA的自适应信号采集系统的特点,对其核心模块进行介绍,采用回波时钟模式对LVDS通信接口进行设计,将FPGA程序架构划分为5部分进行设计,并通过实物平台进行验证测试。测试结果表明:该系统能自适应判别输入信号类型,自动设置采集模式及触发电平,准确计算信号参数,具有一定的实用价值。

A self-adaptive signal acquisition system based on FPGA(field programmable gate array) is designed to solve the problem of the trigger mode and voltage level needs to be set manually for the signal acquisition system. According to the characteristics of the self-adaptive signal acquisition system based on FPGA, introduces the core modules and uses the echoed clock interface mode to design the LVDS communication interface and divides the FPGA program architecture into 5 parts for design and uses the ph ysical platform to verification and test. The results of the test show that the system can self-adaptive identify the signal type and set the acquisition mode and trigger level automatically and calculate signal parameters accurately and have some practica l value.