基于單片機(jī)的酒精濃度檢測儀

電氣工程論文編號:DQ088   論文字?jǐn)?shù):14006,頁數(shù):37

目錄
摘要 I
Abstract II
目錄 IV
1  緒論 1
 1.1  研究背景 1
 1.2  選題意義 2
 1.3  論文的結(jié)構(gòu) 2
2  整體方案設(shè)計(jì) 4
 2.1  設(shè)計(jì)規(guī)劃 4
2.1.1  要需分析 4
2.1.2  方案的確定 4
 2.2  模塊設(shè)計(jì)規(guī)劃 4
2.2.1  控制模塊 4
 2.2.2  人機(jī)接口模塊 5
2.2.4  報(bào)警模塊 6
2.2.5  檢測模塊 6
2.2.6  通信模塊 7
3  硬件方案 7
 3.1  控制器SPCE061A基本電路 7
 3.1.1  SPCE061A的系統(tǒng)電路 7
3.1.2  電源電路設(shè)計(jì) 10
3.1.3  復(fù)位電路 11
 3．2  外圍接口電路設(shè)計(jì) 12
3.2.1  顯示模塊電路 12
3.2.2  鍵盤輸入模塊電路 14
3.2.3  檢測模塊電路 17
3.2.4  報(bào)警模塊電路 21
3.2.5  通信模塊電路 21
4  軟件方案 25
 4.1  系統(tǒng)整體軟件設(shè)計(jì) 25
 4.2  顯示模塊軟件設(shè)計(jì) 27
 4.3  鍵盤軟件模塊設(shè)計(jì) 28
 4.4  檢測與報(bào)警模塊軟件設(shè)計(jì) 30
5  系統(tǒng)的抗干擾措施 33
6  結(jié)論 34
致謝 35
參考文獻(xiàn) 36
附錄 37

摘  要
 酒精濃度監(jiān)測在人民的生活中有著重要的意義。使用單片機(jī)對酒精濃度進(jìn)行監(jiān)測是最常用的方法之一。
 本課題研究的是一種以氣敏傳感器和單片機(jī)為主，并具有聲音報(bào)警功能及LED顯示功能的空氣酒精濃度監(jiān)測儀。其可監(jiān)測出空氣環(huán)境中酒精濃度值，并根據(jù)不同的環(huán)境設(shè)定不同的閾值，對超過閾值進(jìn)行聲光報(bào)警，來提示危害。當(dāng)酒精濃度超過設(shè)定濃度值時(shí)，SPCE061A控制蜂鳴器以及發(fā)光二極管報(bào)警，LED顯示實(shí)時(shí)酒精濃度。系統(tǒng)分五個(gè)模塊：測量酒精濃度檢測模塊、數(shù)據(jù)采集、處理模塊、鍵盤輸入模塊、顯示模塊和報(bào)警模塊。測量酒精濃度模塊是由MQ-3型氣敏傳感器構(gòu)成；數(shù)據(jù)采集、處理模塊主要由SPCE061A單片機(jī)構(gòu)成，完成酒精濃度數(shù)據(jù)的讀取和處理；鍵盤輸入模塊主要由4*3矩陣式鍵盤構(gòu)成；顯示模塊主要由LED構(gòu)成。
關(guān)鍵詞：單片機(jī)、氣敏傳感器、酒精濃度
  
Abstract
Alcohol concentration measurement plays an important role in the production process. It is most commonly to use single chip microcomputer to monitor the alcohol concentration in the industrial control fields.
This paper introduces an alcohol concentration monitoring system based on the SPCE061A, realizing monitoring the alcohol concentration. The principle of the system is : System measures the alcohol concentration of the alcohol manufacture workshop through MQ-2 gas sensor，the output of MQ-2 is magnified and sieved. Then the output is processed by the SPCE061A’s AD transition. Set the alcohol concentration parameter by the keyboard. When the alcohol concentration parameter preponderate over that we set, SPCE061A drive the loudhailer give an alarm and LED immediately shows the alcohol concentration. System is made up of five parts: measure alcohol concentration module, data acquisition module, keyboard input module, display module and alarm module. Measure alcohol concentration module is made up of MQ-2 which is a gas sensor. Data collection, processing modules mainly is made up of SPCE061A single chip microcomputer which can complete collecting and processing the alcohol concentration data. Keyboard input module is made up of 4*4 matrix keyboard. Show module is made up of LED.
The system analyses a series of anti-jamming measures aimed at the reliability and stability of the system.

Keywords：Alcohol concentration ; Gassensor ; Singlechipmicrocomputer