基于单片机的酒精监测系统摘要：近年来，车祸惨案频频发生，而绝大多数车祸的起因都是因为驾驶员醉酒驾驶。 因此减少车祸的一大重要措施，就是对人们是否酒驾进行检测。本设计基于单片机的酒精浓度监测设计，是一款基于单片机的酒精浓度检测和显示含量及报警的仪器。其作用是，通过 MQ-3 酒精浓度检测传感器检测驾驶员的呼气中酒精含量，利用仪器中核心控制器内的程序运行逻辑，来将酒精检测传感器测得的数据进行提取和转换，然后将读数显示在仪器的显示屏上，如果检测中驾驶员呼出的气体酒精含量超标，仪器便会发出报警，以此提醒民警，该驾驶员酒后驾驶。基于单片机的酒精浓度测量仪的发明推广和普遍应用，不仅极大地降低了人们醉酒驾驶的几率，将车祸发生概率尽可能降低到最小，而且增加了人们的法律意识，加强了人们对法律的认知度和对法律的敬畏。本设计核心控制芯片是 STC12C5A60S2 单片机，在本设计中的作用是，对数字信号进行提取、显示和比较，以此实现对 MQ-3 气体酒精浓度检测传感器检测数据的提取、通过 LCD 液晶屏的显示和超过范围时的声光报警。关键词：STC12C5A60S2 单片机；LCD 液晶显示屏；MQ-3 酒精浓度检测传感器；声光报警；1Alcohol concentration monitoring system based on single chip microcomputerAbstract：In recent years, accidents happen frequently, and most of them are caused by drunk drivers. Therefore, an important measure to reduce traffic accidents is to test whether people drink and drive. The design of alcohol concentration measurement system based on detection, content display and alarm based on single-chip microcomputer. Its function is to detect the alcohol content in the breath of the driver through the MQ-3 alcohol concentration detection sensor, extract and convert the data measured by the alcohol detection sensor by using the program running logic in the core controller of the instrument, and then display the reading on the display screen of the instrument. When the alcohol content in the breath of the detected driver exceeds the standard, the instrument will send a repo...
