"基于单片机的酒精浓度检测系统设计与实现"

随着经济的快速发展，私家车数量增长迅速，但酒后驾驶、醉酒驾驶导致的交通事故比例在不断增加，给人民的生命财产造成巨大的损失。为了预防和减少交通事故的发生，设计了一种基于单片机的酒精浓度检测系统，本设计采用 MQ-3气敏传感器采集气体相关数据，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。具有液晶实时显示气体中酒精浓度，通过按键进行阀值设定，超过设定的阀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 AbstractWith the rapid economic development, the number of private cars is growing rapidly, but the proportion of traffic accidents of drunk driving, drunk driving cause 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 alcohol concentration detection system based on single chip microcomputer is designed. This design uses MQ-3 gas sensor to collect gas-related data, which is modulated and data conversion processed by alcohol concentration sensor module, and finally the data is sent to the single chip microcomputer for A/D conversion and execution of corresponding functions. It has the function of real-time display of alcohol concentration in the gas on the LCD, setting the threshold value through buttons, and alarm when the set threshold is exceeded. Keywords: single chip microcomputer; alcohol concentration detection system; gas sensor.