基于STM32的智能噪音监测系统

Intelligent Environmental Noise Monitoring System Based onSTM32Abstract In recent years,with the country is gradually developing and expanding,industrialdevelopment makes our country's economy grow rapidly,but it also leads to various problems that werenot discovered before the development rapidly of the country.Noise pollution is one of them.Ambientnoise affect on the environment or around people,serious even can damage the environment or topeople's physical and mental health caused great influence.Therefore,we need a simple noisemonitoring instrument,which can easily detect whether the current environmental noise decibel value issuitable for people's life,so as to achieve the purpose of monitoring.To monitor the environmental noise,the graduation project topic is to monitor the environmentalnoise system,the single-chip microcomputer used low cost,but powerful and stable function of STM32single-chip microcomputer chip,used for the sound signal processing to obtain the current environmentdecibel value.This design will also add an environmental dust concentration monitoring function,whichis used to simulate the dust noise monitoring equipment used on the construction site.The obtaineddecibel value and environmental PM2.5 concentration value are displayed on the LCD screen.Inaddition,the noise decibel value and PM2.5 concentration value will be send to the android phone appthrough bluetooth technology,which can more easily monitor the current environment.Keywords:Noise monitoring,PM2.5,Bluetooth,STM32