江西科学Issue(4)：598-601,4.DOI:10.13990/j.issn1001-3679.2015.04.032
微弱信号检测前置处理模块电路设计
Pre-processing Module Circuit Design of Weak Signal Detection
摘要
Abstract
According to the actual demand of weak signal detection of Y type optical fiber Laser in-terference micro vibration detector,based on high-speed DSP data acquisition and processing system, using the integrated operational amplifier AD620 chip,a kind of pre-processing module circuit which can realize function of pre-amplifier, band-pass filter, level up and gain adjustable is designed. Through experimental test,the circuit designed in this paper has a strong suppress noise and anti-in-terference ability,the advantages of signal amplification and band-pass filtering efficiency higher. It can also effectively amplify a weak signal and suppress the noise,and lay a foundation for subsequent A/D conversion and high-speed DSP data acquisition.关键词
微小振动测量/微弱信号检测/前置处理模块/电路设计Key words
micro vibration measuring/weak signal detection/pre-processing module/circuit design分类
信息技术与安全科学引用本文复制引用
孙韩..微弱信号检测前置处理模块电路设计[J].江西科学,2015,(4):598-601,4.基金项目
安徽大学2013年大学生科研训练计划项目“压缩感知用于频谱检测方案的研究”(编号:kyx12013034)。 （编号:kyx12013034）
