基于单片机控制的酒精浓度检测系统的设计  

Design of an alcohol concentration detection system based-on the MCU control

作　　者：宋晓宇[1] 高国伟[2] 李世川[1] 吴冰洋[1] 李孟楠[1] 黄璐[1] 

机构地区：[1]北京信息科技大学自动化学院,北京100192 [2]北京信息科技大学信息获取与检测重点实验室,北京100101

出　　处：《传感器世界》2017年第8期18-23,共6页Sensor World

摘　　要：以当下社会普遍关注的酒驾问题为研究背景,设计了酒精浓度控制与检测系统,为及时预防交通事故的发生提供了依据和可能性。本研究设计的酒精浓度测试仪是一款实用性强、安全可靠的气体乙醇浓度检测工具,采用高精度MQ-3乙醇气体传感器对空气中的乙醇浓度进行检测,利用高性能低成本单片机STC89C52对检测信号进行A/D转换和处理,最后通过液晶屏显示输出。本研究设计的酒精浓度测试仪还具有醉酒阈值设定功能,可以根据法律法规或用户需要设定修改醉酒阈值,并进行保存。With the current social problem of drunk driving as the research background, an alcohol concentration control and test system is designed in this paper, which provides the basis and possibility for timely preventing traffic accidents. The system is a high practicable, safe and reliable gas ethanol concentration detection tool. The system uses a high precision alcohol sensor MQ-3 to detect the concentration of ethanol in air, a high- performance low-cost MCU of STC89C52A/D to complete conversion and processing of the detected signals. Finally, the outputs are displayed on the LCD screen. The system also has the function of drinking threshold setting which can be determined according to the laws and regulations or users.

关 键 词：单片机 A/D转换 MQ-3酒精传感器 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置] TP368.12[自动化与计算机技术—控制科学与工程]