Study And Design Of ASM Exhaust Pollutant Inspection System Of In-Use Vehicle

The main content of this text is the establishment and design of the Acceleration Simulation Mode conditions inspection system, and has finished the hardware and software design of this system.First of all, the purpose and the meaning, the state both at home and abroad of the study were discussed, and then the basis of the selected title and the research content of the study were stated.Secondly, the paper discussed the design norm of the ASM system. The operation norm of the examination system, the requirement of the vehicle and the fuel, the technology requirement of the Eddy Current Dynamometer, the measuring instrument, the automatic examination and control system, the display system and so on were explained in detail. Some preparation work before testing was elaborated also.Moreover, the hardware components of the system were selected elaborately according to the request,The whole project of the system was designed. The contents and the function of cach part were described, and the design of the main control computer was introduced also. The design of the dynamometer controller has been finished and its communication with control computer is elucidated. The design of the display system has been finished, the connection and control of the exhaust gas analysis apparatus has been solved and its communication with control computer is elucidated too. The server computer and print system are designed, and the test precision of the hardware system is guaranteed from a lot of respects.Then, the system soft has been designed according to measure method of ASM. This software system compounds communication technology of VB RS-232, VB database interface technology, SOL Sever2000 data stock store technology, network technology, store and read technology for long-rangly of database.Finally, an operation test for the system was carried out, got the results and then the design of thc system finished.