【正文】 ...................................................................................... 1 國(guó)內(nèi)外研究現(xiàn)狀 ................................................................................................. 1 課題研究思路 ..................................................................................................... 2 2 系統(tǒng)方案設(shè)計(jì) ............................................................................................................... 3 技術(shù)指標(biāo) ............................................................................................................ 3 總體設(shè)計(jì)方案 ..................................................................................................... 3 3 硬件電路設(shè)計(jì) ............................................................................................................... 4 元器件選擇 ........................................................................................................ 4 酒精氣體傳感器 ....................................................................................... 4 單片機(jī)介紹 .............................................................................................. 6 充電芯片 ............................................................................................... 10 低壓差調(diào)節(jié)器 ........................................................................................ 12 顯示屏 ................................................................................................... 12 主要功能模塊電路圖 ........................................................................................ 13 充電及穩(wěn)壓電路模塊 .............................................................................. 13 傳感器及信號(hào)調(diào)理電路模塊 ................................................................... 14 聲光報(bào)警電路模塊 ................................................................................. 14 顯示屏模塊電路 ..................................................................................... 15 硬件成品展示 ................................................................................................... 15 4 軟件編程設(shè)計(jì) ............................................................................................................. 16 軟件整體設(shè)計(jì) ................................................................................................... 16 整體設(shè)計(jì)方案 ........................................................................................ 16 主程序流程圖 ........................................................................................ 16 主程序設(shè)計(jì) ............................................................................................ 17 數(shù)據(jù)采集模塊程序設(shè)計(jì) ..................................................................................... 18 液晶顯示模塊程序設(shè)計(jì) ..................................................................................... 19 報(bào)警模塊程序設(shè)計(jì) ............................................................................................ 20 A/D 轉(zhuǎn)換模塊程序設(shè)計(jì) ..................................................................................... 21 5 系統(tǒng)調(diào)試 .................................................................................................................... 22 各模塊調(diào)試 ...................................................................................................... 22 傳感器測(cè)試 ............................................................................................ 22 充電電路測(cè)試 ........................................................................................ 22 報(bào)警電路測(cè)試 ........................................................................................ 23 系統(tǒng)整體調(diào)試 ........................................................................................ 23 調(diào)試結(jié)果分析 ................................................................................................... 23 測(cè)試數(shù)據(jù) ............................................................................................... 23 誤差分析 ............................................................................................... 23 調(diào)試中的問題及解決方案 ................................................................................. 24 6 結(jié)論 ......................................................................................................................... 25 參考文獻(xiàn) ........................................................................................................................ 26 致 謝 ........................................................................................................................ 27 聲 明 ........................................................................................................................ 28 附 件 ........................................................................................................................ 29 第 1 頁 共 31 頁 1 引言 課題研究背景及意義 據(jù)統(tǒng)計(jì)， 2020 年我國(guó)共生產(chǎn)了白酒約 1026 萬噸，排除重復(fù)統(tǒng)計(jì)的數(shù)據(jù)，實(shí)際的消費(fèi)量為 800 萬噸。s body. In this paper, the MQ3 gas sensor is used to collect data, the data is processed through STM32 MCU. If the concentration exceeds the standard, the system will give sound and light alarm, and display concentration through liquid crystal monitor. Key words: drunk driving。 在本課題中使用 MQ3 氣體傳感器采集數(shù)據(jù)，經(jīng)過 STM32 單片機(jī)處理， 如果濃度值超過標(biāo)準(zhǔn)，系統(tǒng)將給予 聲光報(bào)警 ，并液晶顯示濃度 。例如， 麻痹神經(jīng) 、 肢體不受控制 、 大腦反應(yīng) 遲鈍 等 等 。 人 們 的生活 和消費(fèi) 水平迅速提高， 制造業(yè)也在快速地發(fā)展?，F(xiàn)在，私家車對(duì)于很多人來說已 經(jīng)不再是奢侈品了。 所以 ,過量飲酒者開車是一件非常危險(xiǎn)的事情 ， 但是 少量飲酒并不會(huì)有上述癥狀 。 關(guān)鍵詞 :酒駕 ； MQ3 氣體傳感器 ； STM32 單片機(jī) ； 酒精含量 ； 聲光報(bào)警 Design of Portable Alcohol Concentration Detection Instrument Based on STM32 Abstract In recent years, With the rapid develo