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文中设计了一种便携式汽车尾气检测装置,并对传感器因温湿度产生的偏差提出了一种新的算法予以补偿,该系统通过电化学传感器检测气体浓度,利用蓝牙无线通信技术,使检测数据能够无线传输并显示于智能终端.同时,采用锂电池供电,具有使用寿命长、易携带的优点.实现对汽车尾气排放中的CO,CO2以及CH化合物有害气体实时检测.“,”Due to domestic lack an economic low cost instrument which can provide environmental law enforcement and convenience and can provide owner convenience for exhaust self-test,this paper designed a convenient and economical portable automobile exhaust detection device,and the new algorithm deviation produced by the temperature and humidity sensor was proposed for compensation,which is more reliable and has practical value.The system detected the gas concentration by the electrochemical sensor,and used the bluetooth wireless communication technology to enable the detection data to be transmitted and displayed on the intelligent terminal.At the same time,the power supply of lithium battery has the advantages of long service life,easy to carry,and no need of AC power supply.Real time detection of harmful gases in CO,CO2 and CH compounds in automobile exhaust emission was realized.The method is reliable and has practical value.