汽车尾气分析仪设计

随着汽车数量的不断增多,汽车尾气己成为空气污染的重要来源。文中设计了一种汽车尾气分析仪系统,实现了对汽车尾气中CO、HC、CO₂、O₂和NO含量的检测。设计采用部分信号调理电路,并应用Pspice电路仿真软件进行了电路仿真,仿真结果显示了调理电路的放大、滤波效果。能根据国家标准对相关参数进行处理,实现了各项测量数据的显示、判断、存档、查询、统计、标定等功能。

Design of an Automotive Exhaust Gas Analyzer

Automobile exhaust has become one of the important sources of air pollution. In this paper a set of automotive exhaust gas analyzer system solutions is designed to detect the levels of carbon monoxide, hydrocarbons, carbon dioxide, oxygen and nitrogen oxide in the automotive exhaust. Parts of the signal conditioning circuits are de- signed and simulated by the Pspice. Simulation results show the effect of amplification and filtering. The relevant parameters can be processed according to national standard. It achieves the functions of the measurement data, de- termine, archive, query, statistics, and calibration.