An in-vehicle network gas sensor data acquisition monitoring system was designed to solve the problem of air pollution.It can timely feedback and deal with information to ensure real-time and quickly gather signal.If the volume fraction in vehicle exceed normal range

the system will activate alarm and air-conditioning control that add the wind of fresh air.The performance and job timing of the ADC7862 are described.Gas sensor module and design of hardware signal acquisition system is introduced.Then the design of system software is debugged and data is analyzed and verified.This study provides a great significance for air quality monitoring in-vehicle environment personal security and other issues.