Abstract:

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 designed 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,determine,archive,query,statistics,and calibration.

Key words: automobile exhaust;air pollution;analyzer