Development on Host Control System for Exhaust Emission Measurement from Light Duty Vehicles

摘要

This paper introduces the hardware and software designs of a host control system for exhaust pollutant measurementrnfrom light duty vehicles. It is a measure and control system based on GPIB or RS232 interface protocol, using anrnindustrial computer as system controller. It controls devices and acquires data through standard industrial I/O boards.rnThe software was developed under the environment of Labview for Windows based on Virtual Instrument. CVS bagrnanalysis, continuous (modal) measurement of raw and diluted exhaust can be performed according to regulation andrnresearch demand. The concentration and mass of pollutants, fuel consumption, efficiency of catalyst, EGR, A/F, etc can bernobtained. The software has plenty of data processing functions. The system has been used in some laboratories of China.