"基于单片机的酒精浓度检测系统设计与实现-本科毕业设计论文"

本文介绍了一种基于单片机的酒精浓度检测系统的设计和实现。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，给人民的生命和财产造成了巨大的损失。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中的酒精浓度相关数据，经过酒精浓度传感器模块进行调制和数据转化处理，最终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的功能，通过按键进行阀值设定，一旦超过设定的阀值就会触发发光报警等功能。通过实验验证，该酒精浓度检测系统能够准确快速地检测气体中的酒精浓度，对于预防和减少酒后驾驶引发的交通事故具有重要的意义。 关键词：单片机；酒精浓度检测系统；气敏传感器 Abstract: This paper introduces the design and implementation of an alcohol concentration detection system based on a single-chip microcomputer. With the rapid economic development, the number of private cars is growing rapidly, but the proportion of traffic accidents caused by 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, this design uses the MQ-3 gas sensor to collect data related to the alcohol concentration in the gas, and the data is processed and modulated through the alcohol concentration sensor module. The data is finally sent to the single-chip microcomputer for A/D conversion and functional execution. The system has the function of real-time display of alcohol concentration in the gas on the LCD, and through key setting of the threshold, an alarm will be triggered if the set threshold is exceeded. Through experimental verification, the alcohol concentration detection system can accurately and quickly detect the alcohol concentration in the gas, which is of great significance for preventing and reducing traffic accidents caused by drunk driving. Key words: single-chip microcomputer; alcohol concentration detection system; gas sensor