Automotive Exhaust Detection And Analysis System Based On The National Ⅲ Standard

As the development of Chinese economy,the research,manufacture,distribution and marketing of the Automobiles are stepping into a fast way.However,the exhaust from the Automobile leads to serious pollution,which disserves the health of people. Automotive Exhaust Detection and Analysis System(AEDAS)is a system based on Nationalâ…¢Standard,integrated with detecting hardware and diagnosing software.It is used to inspect,analyze and diagnose the automotive exhaust.In this paper,AEDAS that base on Nationalâ…¢Standard is described in details, as well as the situation,regulation,and detection technology of automotive exhaust.(1)The hardware system is developed based on the 16/32-bit Microcontroller technology,which introduces the ARM LPC 2148 and the sensor Model 6800 as the kernel.Thus,the host hardware and slave hardware are connected successfully.(2)Furthermore,the software system and the Nationalâ…¢Standard are researched based on the Microsoft Visual Studio technology and the embedded C language.Then the real-time detection,calibration and communication are realized.(3)Finally,the burning situation and fault diagnosis of automotive engines are researched by Data Analysis(CO,HC,NO_x,CO₂,and O₂)and Data Mining technology on the platform of MATLAB.AEDAS can meet the high demands of Nationalâ…¢Standard and integrated with the detection and analysis functions;furthermore,it provides excellent evaluation and guide for the diagnosis and repair;consequently,the technology,product and the regulation can boost by each other.The innovative points of the project are as follows:(1)The hardware and detection process realization of the Nationalâ…¢Standard;(2)The improvement on the algorithm of Air-Fuel ratio(λ),the fuzzy rules according to the burning discipline and the project experience,and the burning situation analysis on the engine by the fuzzy classification;(3)The research on the fault diagnosis by the burning analysis and the Neural Networks technology.