【摘要】 文章设计了一种噪声提醒器,系统包括噪声信号检测、放大、直流转换、V/F转换、语音提示等电路的设计。噪声信号通过传声器转换成音频信号,电信号经过放大、直流转换和V/F变换输入单片机中进行处理,并转换成相应的噪声dB值与设定值比较,并发出报警。该系统具有电路简单,精确度较高,可检测实时噪声等特点。更多还原

【Abstract】 This paper designs a noise remind device,the system includes the circuit design of noise signal detection,amplification,DC conversion,V/F conversion,voice prompt.Noise signal is converted into audio signal through microphone,the signal after amplification,DC conversion and V/F conversion is converted and input into a MCU for processing,and transferred into corresponding noise decibel value for comparison with setting value,and give the alarm.The system features simple circuit,high accuracy,and real-time detection of noise,etc.更多还原