Structural Theory Of Network On Vehicle And Its Study On Diagnosis Technology

Network system has already been used in both commercial vehicles and home automobiles. It is prominent in vehicle industry and it does great profit for selling. The highly advanced network system is imported and then it is used directly in practice. Accordingly, systemic research is needed in the field of vehicle application and professional trade education at some extents. Therefore, practical technology and theory and diagnosis tech neology and companies.In order to solve the problem of direct manipulation and decrease the high cost of equipments in the research, the experiment is designed to be operated on an automobile and engine platform. Through the study on different network agreements and structures, various theories and structures are compared and analyzed. Simultaneously, by testing typical malfunction simulation, an effective way is made to diagnose the malfunction of network system in vehicles rapidly and precisely.The concrete contains are:1. Summarized the type, structure, theory and characteristics of current network used in automobiles in China; direction of network development.2. Mainly focused on the general breakdown, project test, test warnings and diagnosis steps of network, such as CAN, LIN, WAN, MOST, etc., which are widely used in the current automobiles in China.3. Proved the effectiveness of the integrated application of Breakdown Code Analysis, Millimeter Test, Data-flow Analysis and Waveform Analysis when diagnosing the network breakdown through the analysis of the cases in the experiment and diagnosis.4. Analyzed the current situation of automobile maintenance industry in China, and suggested the solution to solve the problem of network technology application.