【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。更多还原

【Abstract】 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.更多还原