文档介绍:本科毕业论文基于单片机的环境噪声检测仪的设计所在学院机械与工程学院专业名称机械设计制造与自动化完成日期二〇一二年五月摘要I摘要随着社会发展水平的提高,噪声的危害日益突现,对环境噪声的实时检测越来越得到人们的重视。环境噪声监测,是人类提高生活质量,加强环境保护的一个重要环节。本文详细介绍了噪声监测系统的测量原理和系统组成,包括:噪声信号的转换、放大、V/F转换、数据采集和显示系统的设计。外界噪声信号经过传声器变换成音频信号,电信号通过放大和V/F变换输入到单片机进行处理,并转换成相应的噪声分贝值通过LED显示,从而实现噪声的实时监测。该系统具有实现简单,精确度高,适用于实际进行噪声的实时监测等特点。关键词:运算放大器,噪声,单片机,LEDAbstractIIABSTRACTWiththeimprovementofsocialdevelopment,harmofnoisemoreemergent,real-timedetectionofenvironmentalnoiseandgetpeople',whichisimprovingthequalityoflife,,themeasurementprincipleandthesystemconstitutionareintroducedindetail,including:thenoisesignalconvertingsystem,signalmagnifyingsystem,V/Fconvertingsystem,-timemonitoringofthenoiseintoacousticfrequencyelectricalsignalbyusingmicrophone,operationalamplifierandV/Fconverter,whichwillactasSingleChipMicoyo’,,soitisalwaysusedinmonitoringtheurbannoisereal-:operationalamplifier,noise,SingleChipMicoyo,LED目录III目录1引言...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................