音頻檢測系統(tǒng)設(shè)計論文-wenkub
2023-05-25 20:54:25 本頁面
【正文】 筑 大學(xué) 城建學(xué)院電氣 信息工程系課程設(shè)計 II ABSTRACT Environmental noise monitoring, is the human improve the quality of life, strengthen environmental protection is an important link of the bustling block in the major cities and residential areas, there have been large environmental noise display stands in the streets. This design mainly MCS89C51 MCU as the core of audio detection system design. Capacitance in A microphone with sensor principle of work, the microphone after receiving the noise, the voice signal into electrical signal output, and then through the hardware circuit, signal amplification, filter and the design of the A/D conversion circuit and software program to plete the voice frequency detection. To detect the voice frequency through the LED digital tube display, the design of the audio test system with low cost, portable, digital display the advantages of environmental noise. Can be widely used in industrial and mining enterprises, schools and so on need to measure and control of environmental noise. Keywords: audio detection, singlechip puter, sensor, A/D conversion, digital tube吉林建筑 大學(xué) 城建學(xué)院電氣 信息工程系課程設(shè)計 目錄 摘要 ...................................................................... I ABSTRACT ................................................................. II 1概述 ................................................................ 1 2課程設(shè)計目的任務(wù)及要求 .............................................. 2 設(shè)計目的 ........................................................ 2 設(shè)計任務(wù) ........................................................ 2 設(shè)計要求 ........................................................ 2 3音頻檢測系統(tǒng)設(shè)計 .................................................... 3 設(shè)計思想 ........................................................ 3 整體結(jié)構(gòu)設(shè)計 .................................................... 3 系統(tǒng)單元模塊設(shè)計 ................................................ 4 傳感器選擇方案 ............................................... 4 二級放大電路 ................................................. 6 典型二階帶通濾波器電路 ....................................... 7 顯示電路的選擇與設(shè)計 ......................................... 9 系統(tǒng)整體電路圖 ................................................. 10 4軟件設(shè)計 ........................................................... 12 單片機(jī)測頻原理 ................................................. 12 程序設(shè)計分析 ................................................... 12 5系統(tǒng)仿真與調(diào)試 ..................................................... 14 Keil C51 軟件調(diào)試 .............................................. 14 Proteus 軟件仿真 ............................................... 15 6總結(jié) ......................
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