基于单片机的防酒驾系统

基于单片机的防酒驾系统

Anti-Alcohol Drunk Drive System Based on

SCM

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目录

摘要................................................................................................................................................................. I Abstract......................................................................................................................................................... I I 第1章绪论.. (1)

1.1 论文研究背景 (1)

1.2 国内外研究现状 (2)

1.2.1 国内酒精检测现状 (2)

1.2.2 国外酒精检测现状 (4)

1.3 本文研究内容 (4)

第2章硬件系统设计 (6)

2.1 系统功能设计 (6)

2.2 硬件系统概述 (6)

2.3 气体传感器 (7)

2.4 单片机控制系统 (9)

2.5 继电器模块 (10)

2.6 电源模块 (10)

2.7 硬件电路原理图 (11)

3.7.1 开发环境介绍 (11)

3.7.2 硬件原理图设计 (11)

第3章软件程序 (12)

第4章电路仿真 (14)

结论 (17)

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摘要

机动车的保有量屡创新高，是我们的道路安全问题面临严峻的考验，而很大一部分的道路安全事故都与酒后驾车有关。一方面交通管理部门加大道路酒驾巡查力度和处罚力度，另一方面通过媒体宣传，案例举例等方式让人们意识到酒后驾车的危害，使驾驶员从“不敢”酒后驾车逐渐向“不想”酒后驾车转变。但单纯的交通管理部门巡查和宣传，都不能从根本上杜绝酒驾事故的发生。因此从技术角度杜绝酒驾的发生弥补了单纯管理和宣传的缺陷。

本论文采用AT89S52作为系统的中央处理单元，用于接收气体传感器的输入信号，以及控制继电器动作。选择MQ-3型气体传感器作为检测呼出气体中酒精含量的传感器，检测结果输入到单片机内。继电器的两个输出控制端一路连接酒驾报警灯，另一路连接发动机的打火装置。当呼出气体正常时继电器连接发动机打火装置，汽车可以启动；当呼出气体酒精含量超标时继电器则连接酒驾报警灯，车辆无法启动。论文进行了电路原理图设计及软件程序设计，最后通过Proteus软件的ISIS模块进行了电路仿真，验证了本设计合理，功能完备。

关键词：防酒驾；气体传感器；电路设计；Proteus仿真

Abstract

Motor vehicle ownership reached record high, is our road safety is facing a severe test, and a large part of the road safety accidents are involving a drunk driver.On the one hand, the traffic administrative department of the road drunk driving inspection efforts and punishment. On the other hand publicity through the media, case examples, etc. let people consciousness to the drunk driving hazards, so that the driver from not drunk driving gradually to not want to drunk driving change.But the traffic management department inspection and propaganda,cannot fundamentally eliminate drunk driving accidents.Therefore,from the point of view of technology to eliminate drunk driving occurred to make up for the defects of simplemanagement and publicity.

This paper uses AT89S52 as the central processing unit, for receiving the input signal of the gas sensor, and control relay.Select the MQ-3 type gas sensor is used to detect alcohol content in exhaled air, the detection results of input to the microcontroller.Two output control relay end of a road connecting drunk driving warning lamp ignition device, another way to connect the engine.When normal exhaled gas relay is connected to the engine ignition system, the car can start; when the breath alcohol content exceeding the relay is connected with the wine warning lamp driving, the vehicle can not be started.The circuit principle diagram design and software design. Finally, through the Proteus Isis module were circuit simulation, verify the design is reasonable and the function is complete.

Keywords: anti-drunk driving; gas sensor; circuit design; Proteus simulation