The Research On Exhaust Analyzer Based On Embedded Technology

This paper introduces a development of an analysis device for engine emission composition, which includes the mechanism design and electronic control system design with single chip microcomputer. The mechanism design is the foundation of the development, while the electronic control system is the key technology of the development. On the basis of ANDROS's 6800 development, we did the research.In this analysis, so many functions have been achieved with P89C664 and its high efficiency C language. Here they are :Measuring five emission specimens including CO,CO₂,HC,NO_X,O₂;Zeroing and span calibrating the analysis;Measuring the environment conditions including air temperature, air pressure and air humidity;Setting the engine parameters including strokes, the number of cylinders;LCD displaying;Keyboard inputting;Communicating with the host computer.In conclusion, the analysis device showed outstanding performance among the congener devices with the help of advanced gas measurement and electronic technology. Thus the analysis device must have a good market.