基于电化学酒精传感器的高准确度酒精浓度测试仪设计  

The Design of High Accuracy Alcoholicity Tester Based on Electrochemical Alcohol Sensor

作　　者：朱海华[1] 

机构地区：[1]南阳师范学院计算机与信息技术学院,河南南阳473061

出　　处：《电子器件》2013年第4期564-567,共4页Chinese Journal of Electron Devices

基　　金：河南省基础与前沿技术研究计划项目(122300410302)

摘　　要：由电化学酒精传感器、温度传感器、压力传感器、87C552单片机、LCD显示屏和扬声器等部件构造酒精浓度测试仪。设计电路将电化学酒精传感器产生的微电流转换为0～5 V电压输出,以满足87C552内置电压模ADC的需要。通过测量电化学酒精传感器的环境温度,查询保存的电化学酒精传感器的信号比率与环境温度之间的关系数据,计算出准确的酒精浓度。解决了电化学酒精传感器酒精气体燃烧转变为电能输出转换率易受环境温度影响的问题。经过仿真测试性能稳定。The alcoholicity tester is composed of the electrochemical alcohol sensor, temperature sensor, pressure sensor, 87C552, the LCD display and speaker. Designed the circuit of micro-current produced from the electrochemical alcohol sensor is converted to a voltage output of 0 N 5 V to meet the need of the voltage mode ADC built-in the 87C552 micro controller. By measuring the environment temperature of the electrochemical alcohol sensor, and then inquiring the relationship data of the sensor＇s signal ratio and environment temperature, the alcoholicity can be calculated accurately. The problem that the energy conversion rate from alcohol burn to electrical energy is affected by environment temperature easily is solved. The simulation test results show that the performance of the design is stable.

关 键 词：酒精浓度测试 高准确度 有效呼气 电流模转电压模 信号比率 

分 类 号：TP399[自动化与计算机技术—计算机应用技术]