畢業(yè)論文 基于單片機酒精濃度測試儀.doc
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畢業(yè)論文 基于單片機酒精濃度測試儀,摘要2000年以來，隨著中國經(jīng)濟的高速發(fā)展，人民生活水平的迅速提高，中國逐漸步入“汽車社會”，酒后駕車行為所造成事故越來越多，對社會的影響也越來越大，酒精正在成為越來越兇殘的“馬路殺手”。據(jù)有關資料統(tǒng)計，全世界每年因車禍喪生的人數(shù)就超過60萬人，留下永久性傷殘者在400萬以上，一般受傷者則不計其數(shù)。在許多國家，車禍已成...
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摘 要
2000年以來，隨著中國經(jīng)濟的高速發(fā)展，人民生活水平的迅速提高，中國逐漸步入“汽車社會”，酒后駕車行為所造成事故越來越多，對社會的影響也越來越大，酒精正在成為越來越兇殘的“馬路殺手”。據(jù)有關資料統(tǒng)計，全世界每年因車禍喪生的人數(shù)就超過60萬人，留下永久性傷殘者在400萬以上，一般受傷者則不計其數(shù)。在許多國家，車禍已成為第一位意外死亡原因。
此外，因為交通事故造成的經(jīng)濟損失也相當驚人。據(jù)事故調(diào)查統(tǒng)計，大約50%—60%的車禍與飲酒有關。中國公安部門在2009年8月，在全國各地加強查處酒后駕駛的力度，以減少由酒后駕駛造成的惡性交通事故。要查處就涉及到檢測人體內(nèi)的酒精含量和使用設備來進行檢測的問題。
本文研究設計了一種用于公共場所具有檢測及超限報警功能的酒精濃度智能測試儀。其設計方案基于89C51單片機，MQ3酒精濃度傳感器。系統(tǒng)將傳感器輸出的4~20mA的標準信號通過以AD0832為核心的A/D轉(zhuǎn)換電路調(diào)理后，經(jīng)由單片機進行數(shù)據(jù)處理，最后由LCD顯示酒精濃度值。文中詳細介紹了數(shù)據(jù)采集子系統(tǒng)、數(shù)據(jù)處理過程以及數(shù)據(jù)顯示子系統(tǒng)和報警電路的設計方法和過程。系統(tǒng)對于采樣地點超出規(guī)定的酒精濃度時二極管報警電路提醒監(jiān)測人員。同時，操作人員對于具體報警點的上限值可以通過單片機編程進行設置。
關鍵詞：酒精濃度傳感器（MQ3）；MCU；A/D轉(zhuǎn)換器；軟件設計；硬件設計
Abstract
Since 2000, with China's rapid economic development and the rapid increase people's living standard, China has gradually stepped into "car society", drink driving accident caused by more and more impact on society is also growing, Alcohol is becoming more and more brutal "killers." According to statistics, the worldwide number of people killed in road accidents every year on more than 60 million people, left with permanent disability of 400 million or more, usually the injured were numerous. In many countries, traffic accidents have become the first cause of accidental deaths.
In addition, the economic losses caused by the accident is quite amazing. Accident investigation, according to statistics, about 50% -60% of car accidents and alcohol-related. China’s Ministry of Public Security in August 2009, around the country to strengthen efforts to investigate and deal with drink driving, to reduce the drink driving accident caused by the vicious. To investigate the human body involving the detection of alcohol and use of equipment to detect problems.
In this paper, design a public place for the detection and limit alarm functions with an alcohol concentration of intelligent tester. This design,based on STC89C51 microcontroller and MQ3 alcohol concentration sensor. System sensor output 4 ~ 20mA standard signal through AD0832 core A / D converter circuit, after conditioning, data processing by the MCU, the final alcohol concentration value from the LCD display. This paper describes the data acquisition subsystem, data processing and data display subsystem and alarm circuit design methods and processes. System requirements for the sampling sites exceeding the alcohol concentration diode reminder alarm circuit monitors. Meanwhile, the operator specific alarm point for the upper limit set by MCU programming. Alcohol tester will bring a driving signal prior to a safe
Key words:Alcohol concentration sensor (MQ3); STC85C52 MUC; A / D converter; Software design;Hardware design
目 錄
引言 1
1. 緒論 2
1.1 酒精濃度檢測儀開發(fā)背景 2
1.2 酒精濃度檢測儀的發(fā)展 2
1.3 酒精濃度檢測儀設計內(nèi)容 2
2. 方案器件簡介 3
2.1 MCU選擇的簡介 3
2.2 數(shù)模轉(zhuǎn)換器的簡介 5
2.3 時鐘芯片的簡介 7
2.4 液晶顯示器的簡介 8
3 總體方案設計 9
3.1 STC89C52單片機 9
3.2 ADC0832數(shù)模轉(zhuǎn)換 10
3.3 AT24C02存儲器 10
3.4 LCD1602液晶顯示 10
3.5 編譯軟件介紹 12
4 硬件設計 13
4.1 最小系統(tǒng)的實現(xiàn) 13
4.2 數(shù)據(jù)采集設計 15
4.3 A/D轉(zhuǎn)換設計 16
4.4 按鍵設計 16
4.5 外圍擴充存儲器電路 17
4.6 時鐘芯片電路 18
4.7 LCD1602液晶顯示設計 19
4.8 報警設計 21
4.9 電源電路設計 22
5. 軟件設計 22
5.1 編譯語言的選擇 22
5.2 主程序模塊 23
5.3 A/D轉(zhuǎn)換模塊 23
5.4 按鍵輸入模塊 24
5.5 時鐘模塊 24
5.6 液晶顯示輸出模塊 26
5.7 外圍存儲模塊 27
6. 系統(tǒng)調(diào)試 28
6.1 系統(tǒng)硬件調(diào)試 28
6.1.1元器件的焊接 28
6.1.2電路測試 28
6.2 系統(tǒng)軟件調(diào)試 29
6.3 系統(tǒng)整體調(diào)試 29
7. 結(jié)束語 29
謝 辭 31
參考文獻 32
附 錄 33
附錄一 硬件設計仿真圖 33
附錄二 硬件設計原理圖和PCB圖 34
附錄三 檢測程序 35
2000年以來，隨著中國經(jīng)濟的高速發(fā)展，人民生活水平的迅速提高，中國逐漸步入“汽車社會”，酒后駕車行為所造成事故越來越多，對社會的影響也越來越大，酒精正在成為越來越兇殘的“馬路殺手”。據(jù)有關資料統(tǒng)計，全世界每年因車禍喪生的人數(shù)就超過60萬人，留下永久性傷殘者在400萬以上，一般受傷者則不計其數(shù)。在許多國家，車禍已成為第一位意外死亡原因。
此外，因為交通事故造成的經(jīng)濟損失也相當驚人。據(jù)事故調(diào)查統(tǒng)計，大約50%—60%的車禍與飲酒有關。中國公安部門在2009年8月，在全國各地加強查處酒后駕駛的力度，以減少由酒后駕駛造成的惡性交通事故。要查處就涉及到檢測人體內(nèi)的酒精含量和使用設備來進行檢測的問題。
本文研究設計了一種用于公共場所具有檢測及超限報警功能的酒精濃度智能測試儀。其設計方案基于89C51單片機，MQ3酒精濃度傳感器。系統(tǒng)將傳感器輸出的4~20mA的標準信號通過以AD0832為核心的A/D轉(zhuǎn)換電路調(diào)理后，經(jīng)由單片機進行數(shù)據(jù)處理，最后由LCD顯示酒精濃度值。文中詳細介紹了數(shù)據(jù)采集子系統(tǒng)、數(shù)據(jù)處理過程以及數(shù)據(jù)顯示子系統(tǒng)和報警電路的設計方法和過程。系統(tǒng)對于采樣地點超出規(guī)定的酒精濃度時二極管報警電路提醒監(jiān)測人員。同時，操作人員對于具體報警點的上限值可以通過單片機編程進行設置。
關鍵詞：酒精濃度傳感器（MQ3）；MCU；A/D轉(zhuǎn)換器；軟件設計；硬件設計
Abstract
Since 2000, with China's rapid economic development and the rapid increase people's living standard, China has gradually stepped into "car society", drink driving accident caused by more and more impact on society is also growing, Alcohol is becoming more and more brutal "killers." According to statistics, the worldwide number of people killed in road accidents every year on more than 60 million people, left with permanent disability of 400 million or more, usually the injured were numerous. In many countries, traffic accidents have become the first cause of accidental deaths.
In addition, the economic losses caused by the accident is quite amazing. Accident investigation, according to statistics, about 50% -60% of car accidents and alcohol-related. China’s Ministry of Public Security in August 2009, around the country to strengthen efforts to investigate and deal with drink driving, to reduce the drink driving accident caused by the vicious. To investigate the human body involving the detection of alcohol and use of equipment to detect problems.
In this paper, design a public place for the detection and limit alarm functions with an alcohol concentration of intelligent tester. This design,based on STC89C51 microcontroller and MQ3 alcohol concentration sensor. System sensor output 4 ~ 20mA standard signal through AD0832 core A / D converter circuit, after conditioning, data processing by the MCU, the final alcohol concentration value from the LCD display. This paper describes the data acquisition subsystem, data processing and data display subsystem and alarm circuit design methods and processes. System requirements for the sampling sites exceeding the alcohol concentration diode reminder alarm circuit monitors. Meanwhile, the operator specific alarm point for the upper limit set by MCU programming. Alcohol tester will bring a driving signal prior to a safe
Key words:Alcohol concentration sensor (MQ3); STC85C52 MUC; A / D converter; Software design;Hardware design
目 錄
引言 1
1. 緒論 2
1.1 酒精濃度檢測儀開發(fā)背景 2
1.2 酒精濃度檢測儀的發(fā)展 2
1.3 酒精濃度檢測儀設計內(nèi)容 2
2. 方案器件簡介 3
2.1 MCU選擇的簡介 3
2.2 數(shù)模轉(zhuǎn)換器的簡介 5
2.3 時鐘芯片的簡介 7
2.4 液晶顯示器的簡介 8
3 總體方案設計 9
3.1 STC89C52單片機 9
3.2 ADC0832數(shù)模轉(zhuǎn)換 10
3.3 AT24C02存儲器 10
3.4 LCD1602液晶顯示 10
3.5 編譯軟件介紹 12
4 硬件設計 13
4.1 最小系統(tǒng)的實現(xiàn) 13
4.2 數(shù)據(jù)采集設計 15
4.3 A/D轉(zhuǎn)換設計 16
4.4 按鍵設計 16
4.5 外圍擴充存儲器電路 17
4.6 時鐘芯片電路 18
4.7 LCD1602液晶顯示設計 19
4.8 報警設計 21
4.9 電源電路設計 22
5. 軟件設計 22
5.1 編譯語言的選擇 22
5.2 主程序模塊 23
5.3 A/D轉(zhuǎn)換模塊 23
5.4 按鍵輸入模塊 24
5.5 時鐘模塊 24
5.6 液晶顯示輸出模塊 26
5.7 外圍存儲模塊 27
6. 系統(tǒng)調(diào)試 28
6.1 系統(tǒng)硬件調(diào)試 28
6.1.1元器件的焊接 28
6.1.2電路測試 28
6.2 系統(tǒng)軟件調(diào)試 29
6.3 系統(tǒng)整體調(diào)試 29
7. 結(jié)束語 29
謝 辭 31
參考文獻 32
附 錄 33
附錄一 硬件設計仿真圖 33
附錄二 硬件設計原理圖和PCB圖 34
附錄三 檢測程序 35
