摘要随着我国道路交通的不断发展,人民生活水平的不断提升,我国汽车产业蓬勃发展,但是随之带来的也是越来越严重的酒驾问题。在这一背景下,如何有效的判别以及验证司机是否酒驾的方法得到了人们越来越多的重视。现在我国主要采用防酒驾测试仪来判别司机的醉酒程度。传统的防酒驾测试仪是一款通过内部酒精浓度传感器计算出司机呼出气体中的酒精浓度进而判断司机的醉酒程度。但是随着近年来社会对酒驾的不断重视,人们迫切需要一款更加准确、更加方便的产品来判断司机的醉酒程度进而对司机进行更公正的惩罚以及对人们的生命安全提供更多的保护。84094
本文设计的酒精浓度检测系统主要包括单片机最小系统模块、A/D转换模块、LCD显示模块、蓝牙串口通信模块以及蜂鸣器报警模块。其中单片机最小系统模块是最核心的部分,作为整个系统的控制处理器。A/D转换模块实现的功能是把从酒精传感器模块获得的模拟量转换成单片机可操作的数字量,将转换结果发送给单片机最小系统。LCD显示模块用来显示一串特定字符和测得的酒精浓度的数值。报警模块使用蜂鸣器蜂鸣来实现,当酒精浓度超过设定值时蜂鸣器实现报警功能。蓝牙串口通信模块用来将数据发送到手机端口。
毕业论文关键词:酒后驾驶,蓝牙模块,单片机,道路交通安全,实时显示;
Abstract The past decades had witnessed the booming of automobile industry in China, along with which came the increasingly severe problem of drunk driving, a Damocle's sword to road safety。 Thus, how to distinguish drunk drivers is receiving growing attention。Currently in China, the anti drunk driving tester, a device calculating the concentration of alcohol in the air the tested driver breathes out via the sensor within, is widely used to test how drunk the drivers are。 Yet with increasing social concerns this device no longer suits the current demand, therefore a product with higher accuracy and efficiency is called for。
Alcohol concentration detection system that designed in this thesis mainly includes MCU control module, A/D conversion module, LCD display module,Bluetooth serial communication module and buzzer alarm module 。 The MCU control module is the core part of the whole system,as a control processor。 A/D conversion module realizes the function of converting the digital signals obtained from the alcohol sensor module into analog signals, then the conversion results will be sent to the AVR master control module。 LCD display module is used to display a specific character and the measured alcohol concentration value。 Alarm module uses a buzzer, when alcohol concentration exceeds the set value, buzzer will beep to realize the alarm function。 The Bluttooth serial communication module is used to send data to the phone。
Keywords: drunk driving; Bluetooth module; MCU; road safety; real-time display ;
目 录
第一章 绪论 1
1。1 选题的背景及意义 1
1。3 论文主要研究内容 3
第二章 防酒后驾驶系统控制系统理论研究 5
2。1 系统整体设计构想 5
2。2系统设计具体步骤 5
2。3系统原理 6
第三章 硬件的选型 8
3。1酒精传感器的选型 8
3。2单片机的选型 10