Fpga-based High-speed Signal Acquisition And Processing System

In the recent years, the digital signal processing technology obtained the widespread application in each domain with science's and technology's development, people formerly usually used DSP and ARM to catch and process the signal. But DSP and ARM 's many functions completely depend on the software, the entir-ed software's movement needs to occupy the time of catching. in addition, they can't control the complex periphery circuit's logic of hardware very well. so theyhave very big flaw in high speed data gathering and processing. Field-Programmable Gate Array has timeliness, the controllability and the processing speed quickly and so on characteristics, its appearance causes the high speed figure signal gathering and processing become more and more easy.This article has designed based on the FPGA DE2 development board and have processed the signal data which gathers on FPGA development board DE2.In this topic, the design coverage includes:1. designing high speed signal gathering circuit board;2. introducting the principle of FFT in detail.3 introducting the knowledge of FPGA and software of QuartusⅡ.4. catching ,Confirmating and making the FFT transformation to the signal. The test's result indicates that itis able to carry on and processfor the high speed signal with FPGA.All the system has the very good timeliness, high precision and strong modifiability characteristic.it is satisfy the high speed signal gathering and the processing's need.