【正文】
....... 16 電氣原理圖 .................................................................................... 16 PCB 電路圖 .................................................................................... 17 程序清單 ........................................................................................ 17 1 緒論 交通事故已成為對人類生命安全威協(xié)最大的“第一公害”。由于酒后 駕車的危害,交管部門 加大處罰力度。燃料電池酒精傳感器采用貴金屬白金作為電極,在燃燒室內(nèi)充滿特種催化劑,使進入燃燒室內(nèi)的酒精充分燃燒轉(zhuǎn)變?yōu)殡娔?,也就是在兩個電極上產(chǎn)生電壓,電能消耗在外接負載上,此電壓與進入燃燒室內(nèi)氣體的酒精濃度成正比。系統(tǒng)掉電后醉酒閾值不失,可以保持 。 L2 和 L3 為報警指示燈,分別可以進行酒后和醉酒兩級報警。 Protel 軟件 簡介 Protel 軟件主要由電路原理圖設(shè)計模塊、印制電路板設(shè)計模塊( PCB 設(shè)計模塊)、電路信號仿真模 塊和 PLD 邏輯器件設(shè)計模塊等組成,各模塊具有強大的功能,可以很好的實現(xiàn)電路設(shè)計與分析。 飲酒者 (或用酒精棉球代替 )對酒精濃度測試儀傳感器探頭吹氣,液晶屏顯示的乙醇氣體濃度值快速上升,很快超過報警閾值,報警燈亮。杭州:浙江大學(xué)出版社, 2021 [17] 趙異波,何湘寧,電力電子電路的數(shù)字化控制技術(shù) [J],電源技術(shù)應(yīng)用, 2021,11(5) : 557 (6)~ 559 (8) [18] BartonJS Optical Fibre Sensor for Monitoring Acoustic Actuators,1992,31(3):110114 [19] C2H5OH Gas Chemical Systems Preliminary [20] MC78XX/LM78XX/MC78XXA 3Terminal 1A Positive Voltage [21] Carrara Giuseppse, Gardella Simone ,Marchesoni Mario A new Multilevel PWM Method :Theoretical analysis [J].IEEE Trans power [22] STRONG S J . World overview of buildingintegrated photovoltaic[C]. Conference Record of the Twenty Fifth IEEE. Washington, DC:IEEE, 1996: 11971202. 附錄: 電氣原理圖 PCB電路圖 程序清單 (1) 頭文件和一些宏定義 include include include define uchar unsigned char define uint unsigned int (2) 常量、變量定義和函數(shù)聲明 //聲明常量 define ALCH 80 //醉駕標(biāo)準(zhǔn) 80mg/L //K_MG_MV和 K_ZERO 為傳感器校準(zhǔn)系數(shù),要根據(jù)每個 MQ3 模塊校準(zhǔn) define K_MG_MV 160/60 //傳感器靈敏度系數(shù),可以 自行校準(zhǔn) define K_ZERO 0 //傳感器零點漂移 //定義按鍵 sbit Key_Up = P3^6。 void ADC_Init()。 TH0 = 0xf8。0xf8|0x07。 //清 ADC_FLAG 和 ADC_START 位,停止 轉(zhuǎn)換 return ADC_RES。 break。i++) for (j=0。 else Led_Warn1 = 1。 if (!Key_Down) keyDown = 0。t agree with the disciplinary action your employer has taken against you ? your employer dismisses you and you think that you have been dismissed unfairly. For more information about dismissal and unfair dismissal, see Dismissal. You can make a claim to an employment tribunal, even if you haven39。 The end of our life, and can meet many things really do? 而窮盡我們的 一生,又能遇到多少事情是真正地非做不可? During my childhood, think lucky money and new clothes are necessary for New Year, but as the advance of the age, will be more and more found that those things are optional。 Have declared the end of the encounter that haven39。那些曾經(jīng)所謂的非做不可,只是青蔥年華里自己給自己注射的一支強心劑,或者說,是自以為是的精神寄托罷了。 May be back in the past, to oneself the paranoid weird belief disillusionment, these days, my mind has been very messy, in my mind constantly. Always feel oneself should go to do something, or write something. Twenty years of life trajectory deeply shallow, suddenly feel something, do it. 一字開頭的年齡已經(jīng)到了尾聲。 } /******************************************************************** 主函數(shù) *********************************************************************/ void main() { while(1) //無限循環(huán) { LED=1。} if (FlagKeyPress == 1) { KeyProcess(keyvalue)。 ALValue = ALValue *K_MG_MV。 L1602_string(1,1,Wele to ALCT! )。 if ((Threshold=255)||(Threshold0)) Threshold = 80。 //ADC_Start=1, 啟動轉(zhuǎn)換 while((ADC_CONTRamp。i) 。 //定時器工作方式選擇 TL0 = 0xcc。 //鍵值 char * pSave。 致 謝 在朱俊杰老師悉 心指導(dǎo)和幫助下,完成了酒精測試儀的設(shè)計和論文的撰寫。 然后做未飲酒人的測試。 圖 10 供電及程序下載電路 3 Protel 硬件開發(fā)軟件 Protel 是目前國內(nèi)最流行的通用 EDA 軟件,它是將電路原理圖設(shè)計、PCB 板圖設(shè)計、電路仿真和 PLD 設(shè)計等多個實用工具軟件 組合后構(gòu)成的EDA 工作平臺,是第一個將 EDA 軟件設(shè)計成基于 Windows 的普及型產(chǎn)品。 將傳感器放在無被測氣體的地方,順時針調(diào)節(jié)電位器,調(diào)節(jié)到指示燈亮,然后逆時針轉(zhuǎn)半圈,調(diào)到指示燈不亮,然后接近被測氣體,指示燈亮,離開被測氣體,指示燈熄滅,就證明傳感器是好的! 單片機部分 STC12C5A16AD 芯片為 52 內(nèi)核 8 位單片機,內(nèi)部集成了 10位多路 A/D 轉(zhuǎn)換模塊,適用于常用檢測電路。 實現(xiàn)功能: 實時測量空氣中的乙醇氣體濃度,在液晶屏上顯示。這兩種能夠制造成便攜型呼氣酒精測試器,適合于現(xiàn) 場使用半導(dǎo)體型采用氧化錫半導(dǎo)體作為傳感器,這類半導(dǎo)體器件具有氣敏特性,當(dāng)接觸的氣體中其敏感的氣體濃度增加,對外呈現(xiàn)的電阻值就降低。美、日等國的研究表明,血液中酒精濃度為 %、 %、 %時 ,駕駛能力分別可下 10%、 25%、 30%。 關(guān)鍵詞 : 酒 駕測試儀;酒精濃度; STC12C5A16AD; MQ3;閥值 III Abstract Since the criminal law amendment (eight) and the road traffic safety law formally implemented, drunk driving into the punishment formal. Not only the traffic police department, and many owners are looking forward to a portable instrument conveniently measure the alcohol concentration of gases, which provides guarantee for safe driving, effectively reduce the occurrence of major accidents. Alcohol concentration tester designed in this study is the gas concentration of ethanol detection tool for a practical, safe and reliable, high precision of MQ3 alcohol gas sensor to detect the concentration of ethanol in air, A/D conversion and processing of signal detection using macro crystal, high performance and low cost microcontroller STC12C5A16AD, finally through the LCD screen display output. Alcohol concentration tester designed in this study has drunk threshold setting function, can according to laws and regulations or the user needs to set the threshold to modify the drunk, and save. The instrument is small volume to carry, simple and convenient operation, low cost, high performance, suitable for the promotion of the use of. Keywords: Drunk driving tester。全球每年有 50萬人因車禍喪生。 車輛駕駛?cè)藛T血液中的酒精含量大于或者等于 20mg/100mL 小于 80mg/100mL的駕駛為。與半導(dǎo)體型相比,燃料電池型呼氣酒精測試儀具有穩(wěn)定性好,精度高,抗干擾性好的優(yōu)點。 醉酒閾值可以通過按鍵修改并保存。 液晶顯示部分 顯示電路 : 顯