基于ADμC812的频谱分析系统设计  

Design of spectrum analysis circuit based on ADμC812

作　　者：汉泽西[1] 邢靖虹[1] 郝建国[2] 甘志强[1] 

机构地区：[1]西安石油大学电子工程学院,陕西西安710065 [2]西安邮电学院电子与信息工程系,陕西西安710061

出　　处：《电子测试》2009年第3期39-42,共4页Electronic Test

摘　　要：在频谱分析实现方法的基础上,设计出一种基于FFT算法的频谱分析系统。本系统以ADμC812为核心,在Quick Start环境下以C语言编程实现频谱分析算法。系统通过快速傅里叶变换运算将被测信号分解成分立的频率分量,并采用数字方法直接由模拟/数字转换器(ADC)对输入信号取样,再经处理后获得频谱分布图。文中给出了该系统的总体结构框图,部分硬件电路及软件算法流程图。仿真实验结果表明这种设计方法具有高精度、低功耗、实时反应迅速和可靠性强等特点。An spectrum analysis system is designed based on depth research of DFT realization. ADμC812 is used as core processor in the system, and the analysis program is compiled by using C language based on Quick Start. spectrum of sub-device operation will be measured through the Fourier decomposition signal frequency components of the legislation weight based on fast Fourier transform, and used directly by the number of analog/digital converter （ADC） to the input signal sampling, and then treated Access to the spectrum distribution. The article presented the general structure scheme, a part of hardware circuit and software flow chart. The result of the simulation proved that the system was equipped with advantages such like high precision, low power dissipation, quick real-time response, great reliability and so on.

关 键 词：ADΜC812 频谱分析 低功耗 

分 类 号：TM935.21[电气工程—电力电子与电力传动]