防 灾 科 技 学 院毕 业 设 计题 目基于单片机酒精浓度测试仪设计学生姓名骆成曦学 号 105032211系 别 防灾仪器系 专 业测控技术与仪器班 级 1050322 开题时间2025 年 12 月 20 日答辩时间 2025 年 6 月 6 日指导老师刘淑聪 职 称讲师基于单片机酒精浓度测试仪设计作 者 骆成曦指导老师 刘淑聪摘要 本文设计一种可以检测酒精浓度并在超过一定浓度阈值时进行声光报警提示的酒精浓度测试仪。系统采纳酒精浓度传感器 MQ3，把检测到的酒精浓度转换为电信号，经 A/D 转换器转换成数字信号在传给单片机，最后单片机进行相应处理，LCD 液晶可以显示酒精浓度，当超过设定值时系统可以进行声光报警。关键词：89C51 单片机；MQ3 浓度酒精传感器；ADC0908；LCD1602 液晶； Based on single chip microcomputer alcohol tester design Author Luo chengxiTeacher Liu ShucongAbstract： This paper studies can detect alcohol concentration and sound and light alarm prompt more than the threshold. Mainly adopts MQ3, alcohol concentration sensor to detect the alcohol concentration can be converted into electrical signals, after A/D converter is converted into digital signals to single chip microcomputer, the corresponding single-chip processing, LCD liquid crystal display (LCD) and alcohol concentration exceeds the set value of sound and light alarm. In this paper, we introduce the sensor, converter, MCU, LCD monitor, when alarm circuit and the principle of use.Keywords：89 c51; MQ3 alcohol concentration sensor; ADC0908 converter; LCD1602 LCD; The hardware and software design. 目 录第一章 绪论...............................................................................................................................4第二章 酒精测试仪总体设计...................................................................................................52.1 酒精浓度检测仪设计要求..........................................................................................52.2 酒精浓度检测仪设计方案........
