"基于单片机的酒精浓度检测系统设计与应用研究"

摘要： 本文介绍了一种基于单片机的酒精浓度检测系统的设计。随着经济的快速发展，私家车数量增加，酒后驾驶和醉酒驾驶所导致的交通事故比例不断增加，给人民的生命和财产带来巨大的损失。为了预防和减少交通事故的发生，本设计采用了MQ-3气敏传感器来采集气体相关数据，并经过酒精浓度传感器模块进行调制和数据转化处理，最后将数据传送给单片机进行A/D转换和执行相应的功能。该系统具有液晶实时显示气体中酒精浓度，通过按键进行阈值设定，超过设定的阈值会发光报警等功能。 关键词：单片机；酒精浓度检测系统；气敏传感器 Abstract： With the rapid economic development, the number of private cars is growing rapidly, but the proportion of traffic accidents caused by drunk driving and drunk driving is increasing, causing huge losses to the lives and property of the people. In order to prevent and reduce the occurrence of traffic accidents, a design of alcohol concentration detection system based on single chip microcomputer is proposed. This design uses MQ-3 gas sensor to collect gas-related data, which is modulated and converted by the alcohol concentration sensor module, and finally the data is transmitted to the single chip microcomputer for A/D conversion and execution of corresponding functions. The system has the functions of LCD real-time display of alcohol concentration in gas, threshold setting by key, and light alarm when the set threshold is exceeded. Keywords: Single chip microcomputer; Alcohol concentration detection system; Gas sensor