基于单片机控制的酒精浓度测试仪设计

近年来,我国私家车数量日益增加,交通事故频繁发生,大部分事故造成的原因是酒后驾车,因此需要设计一款智能的测试仪器来检测驾驶员体内酒精的含量。本测试仪由AT89C51系列单片机、气敏传感器、LCD1602显示屏、按键、LED报警指示灯、开关和电源等器件构成。可以检测气体中的酒精浓度,并采用液晶屏显示出酒精浓度和醉酒阈值,醉酒阈值可通过按键来设置,同时具有报警功能。当检测值超过醉酒阈值时,相应的指示灯亮,即红灯亮,黄灯的报警值可通过模块上的电位器调节阈值,是一款实用性强、安全可靠便于携带的气体乙醇浓度检测工具。

Design of alcohol concentration tester based on MCU

In recent years,with the increasing number of private cars in China,traffic accidents occur frequently.Most of the accidents are caused by drunk driving.Therefore,it is necessary to design an intelligent test instrument to detect the alcohol content in the driver's body.The tester is composed of AT89C51 single chip microcomputer,gas sensor,LCD1602 display screen,button,LED alarm indicator,switch and power supply.The alcohol concentration in the gas can be detected,and the alcohol concentration and drunk threshold can be displayed on the LCD screen.The drunken threshold can be set by pressing the key,and has the alarm function.When the detection value exceeds the drunk threshold,the corresponding indicator light will be on,that is,the red light will be on.The alarm value of the yellow light can be adjusted through the potentiometer on the module.It is a practical,safe,reliable and portable gas ethanol concentration detection tool.