基于FPGA和C8051F020的简易实时频谱分析设计  

The Design of Real-time Spectrum Analysis Based on FPGA and C8051F020

作　　者：杨守建[1] 沈一波[1] 杨忠[1] 李宏[1] YANG Shou-jian, SHEN Yi-bo, YANG Zhong, LI Hong （Faclty of Information Science and Egineering, Ningbo University, Ningbo 315211, China）

机构地区：[1]宁波大学信息科学与工程学院,浙江宁波315211

出　　处：《电脑知识与技术》2011年第6期3884-3886,共3页Computer Knowledge and Technology

基　　金：宁波市服务型重点专业建设资助（编号：010-A00083094702）

摘　　要：FFT—V9．0 Core是基于Altera FPGA高性能、高度参数化的快速傅里叶变换处理器。设计和实现了一种以FPGA为核心，辅助于C8051F020数据处理，液晶显示各谐波幅值、基波含有率和频谱图的实时频谱分析系统。由C8051F020片内AD采集输入信号，经FPGA与C8051F020并行数据通信协议进入FPGA做FFT算法分析，运算结果经并行数据通信协议以送回C8051F020做进一步数据处理和显示。实验证明，系统充分利用了FPGA与C8051F020芯片资源，具有较好的实时性，频谱分析特性，系统操作简便，测量结果直观可靠。FFT-V9.0 Core is based on Altera FPGA high performance, high parameterized fast Fourier transform processor.A real-time spectrum analysis system is designed and realized.The system uses FPGA as the core,aided with C8051F020 and liquid crystal display various harmonic amplitude, base wave contains rate and the spectrum diagram.The input signal is sampled by AD converter in C8051F020 and delived to FPGA through Parallel data communication protocols.After FFT algorithm analysis,the resuks are delived to C8051F020 through Timeshare multiplexing cable method to doing further data processing and display. Experiments show that the system made full use of the resources of FPGA and C8051F020 chips. The system features good real-time performance,spectrum analysis performance,easy operating and has intuitive and realiable measuing results.

关 键 词：频谱分析 FFT FPGA C8051F020 并行数据通信 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论;自动化与计算机技术—计算机科学与技术]