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1、酒精检测报警器酒精检测报警器摘要摘要近年来，随着我国经济的高速发展，人民的生活水平迅速提高，越来越多的人有了自己的私家车，而酒后驾车造成的交通事故也频频发生。酒后驾车引起的交通事故是由于司机的过量饮酒造成人体内酒精浓度过高，麻痹神经，造成大脑反应迟缓，肢体不受控制等症状。少量饮酒并不会有上述症状，即人体内酒精浓度比较低时，而人体内酒精超过某一个值时就会引起危险。为此，需要设计一智能仪器能够监测驾驶员体内酒精含量。目前全世界绝大多数国家都采用呼气酒精测试仪对驾驶人员进行现场检测，以确定被测量者体内酒精含量的多少，以确保驾驶员的生命财产安全。此外，酒精测试仪也可应用于食品加工、酿酒等需要监控空气中
2、酒精浓度的场合。由此可见，酒精测试仪具有巨大的潜在用户群，市场前景十分广阔。本论文主要阐述了一个基于气敏传感器的酒精浓度感应与自动报警器。在气敏传感器感应到了酒精浓度超标时，将电信号转变成音频信号输出。并发出鸣响警示驾驶人员不要驾驶，并用继电器锁闭汽车的点火系统，从而保障驾驶员和乘客的安全。关键词：关键词：气敏传感器；酒精传感器；声光报警器AbstractIn recent years, with the high speed development of economy, peoples standard of living increased quickly, more and more
3、people have their own cars, and drunk driving and traffic accidents caused by the constant. The traffic accident caused by driving is due to the drivers excessive drinking alcohol caused by human body, causing brain nerve palsy, slow response, the body is not controlled wait for a symptom. Alcohol c
4、an not have symptoms, namely people relatively low alcohol concentration, and more than one person alcohol will cause dangerous values. Therefore, it is necessary to design an intelligent instrument can monitor drivers in alcohol content. Most countries around the world are adopted to exhale alcohol
5、 tester driving personnel on-site testing to determine the body is measured by how much alcohol content, to ensure safety of lives and property of the driver. In addition, alcohol tester can also be used in food processing, etc. To monitor air alcohol concentration. Thus, alcohol tester has great po
6、tential user group and market prospects.The caption ethyl alcohol alarm apparatus lock up design summary report. When the gas sensor induced strength of alcohol exceeding the allowed figure, transformed the tonic train signaling output the electrical signal. And sends out resounds the caution to dri
7、ve the personnel not to drive, and locks up automobiles ignition system with the relay, thus safeguards the pilot and passengers safety.Key words: Gas Sensor；Alcohol Sensor；Sound and Light Alarm目目 录录绪论绪论.11 系统设计系统设计.21.1 设计背景.21.2 设计目的.21.3 总体设计方案.21.3.1 总体设计思路.21.3.2 系统组成.32 系统电源的设计系统电源的设计.52.1 稳压电源的基本原理.52.2 纹波处理.62.2.1 纹波的概念.62.2.2 纹波的害处.62.2.3 纹波电压的抑制方法.63 系统气敏传感器的设计系统气敏传感器的设计.83.1 传感器的定义.83.2 气敏传感器的定义.83.3 气敏传感器的分类.83.4 气敏传感器的选择.93.4.1 MQ-3 简介.93.4.2 MQ-3 的基本参数.
