摘 要本文讨论设计了一种用于公共场所具有检测及超限报警功能的酒精浓度智能测试仪。其设计方案基于89C51 单片机，MQ3 酒精浓度传感器。系统将传感器输出信号通过A/D 转换电路调理后，经由单片机进行数据处理，最后由LCD 显示酒精浓度值。从而让驾车的人知道自己该在什么情况下可以开车，这是一个在现代生活很有用。经过大量的验证，基于单片机的酒精浓度监测仪检测仪比传统的机械检测仪或酒精计灵敏，监测精度高，准确方便，可靠性好，扩展简单，控制功能强大。对超出阀值进行声光报警，直观准确。所以基于单片机的酒精浓度监测仪的讨论具有一定的价值。关 键 词 ：酒精浓度传感器 单片机 数模转换 硬件设计 数码管显示AbstractThis paper studies has been designed for public inspection and overrun alarm function with the alcohol concentration intelligent tester. Its design scheme based on 89C51, MQ3 alcohol concentration sensor. System will sensor output signal through the A/D circuit recuperation, data processing by MCU, finally by LCD display alcohol chroma value. So let the people know what oneself should drive in what circumstances can drive, this is a very practical in modern life.After a great deal of verification, based on SCM alcohol concentration monitor detector than traditional mechanical detector or alcohol plans, monitoring high precision, sensitivity, good dependability, precise convenient extended simple, control powerful functions. Beyond the value of acousto-optic alarm, intuitive accurate. So based on SCM alcohol concentration monitor research has certain value.. Keywords: Alcohol concentration sensor microcontroller digital-to-analog Hardware design Digital pipe display毕 业 设 计 （ 论 文 ） 原 创 性 声 明 和 使 用 授 权 说明原创性声明本人郑重承诺：所呈交的毕业设计（论文），是我个人在指导老师的指导下进行的讨论工作及取得的成果。尽我所知，除文中特别加以标注和致谢的地方外，不包含其他人或组织已经发表或公布过的讨论成果，也不包含我为获得 ...
