The Detection Line Of Automotive Performance And Automatic Fault Diagnosis System

The automotive performance testing is testing, inspection and diagnosis work for technical condition and maintenance quality of vehicle in case of non-disintegration vehicle, which is the base of vehicle repair maintenance and performance evaluation after vehicle repair. In the early time of the vehicle detection technology development, maintenance person mainly relay on sight ears and hands to find the fault and solve the problem. Testing technology remains in the surface. With the progress of science and technology, especially computer technology, modern maintenance person can rely on all kinds of advanced equipment to test the vehicle in case of non-disintegration vehicle which is safe and convenient. The technology widely used on vehicles play positive role for ensuring the vehicle security, reliability, power, economy, and improving the quality of vehicle maintenance. For that, related research unit attaches great importance to comprehensive performance testing of vehicles.Based on the analysis of vehicle comprehensive performance test structure, function and working principle, structure principles of main testing equipment the nature of the signal, and the acquisition process are illustrated. Through research, comprehensive inspection vehicle LAN system construction is completed and the independent network testing equipments are networked. The system composes of test line database server, logging on the computer, vehicle detection computer (the IPC) and system software. Meanwhile, in order to ensure the normal operation of automotive testing equipment, improving reliability, vehicle testing equipment fault monitoring and fault diagnosis are researched. Through analysis of the main principle of fault tree and fault tree mathematical model to study the Vehicle testing line common failure and analyze failure causes and diagnostic procedures, which has important practical significance for improving the efficiency of automotive testing equipment and promoting automotive testing equipment teaching effectiveness.