Software Architecture And Application Of Telematics System

As long as the popularization of automobile and the super-development of Internet in China now days. There're three customer demands for Chinese automobile Industry. First of all, the customers have higher requires on the motor vehicle maintenance and safety guide field. Secondly, more and more people willing to take environment-friendly &low-carbon trips. Thirdly, the higher growth reliance on automobile and Internet from customer generates more pressing demands on the application of information technology and entertainment. In conclusion, here's new technology “Telematics” will be born from the unavoidable integration of Automobile, resource and Internet.Telecommunications and Informatics make up the core of Telematics. Speaking from a broad sense, Telematics indicates the technology achieve the real-time data transmission which base on the long distance radio communications, in a narrow sense of a word, it indicates the combination of communication engineering and automobile technology, the new technology of the integration between Internet and in-car intelligent system which transmit by wireless network. No doubts, these new services which derived from Telematics will become the new economic growth points not only in automobile industry but also in the whole society, such as automobile centralized monitoring system, real-time road status' communication system, on-line service and so on. However, compared to the rapid growth of demand for Telematics, the long development cycle of Telematics system based TCU resulting in Telematics system development can not keep changing with the Telematics' requirements, the core problem is that the Telematics system is huge and include so many features that lead to software crisis, in order to solve this problem, In this paper, through analysis the the existing Telematics systems requirement, it lead in following three techniques:1, In the vehicle embedded systems. middleware technology first to be used, through presenting and elaborating design principles and implementation of middleware XMAL to achieve rapid modules integration in telematics system based on ECU2, Innovative use ACP245 protocol as TCU and the SP-side data exchange format, by analyzing and applicate ACP245 communication protocol for data standardization transmition.3, Application and research of the CAN module in the vehicle system, through good layering of CAN module to enhance reusability and portability of CAN module to make time and resources cost down.This thesis focuses on the current situation of Telematics and related demand analysis at home and aboard. introduce the cross-platform XAML middleware for the quickly integration by the system architecture level. This thesis also took the emphases on acp245, standardized communication protocol which achieve the quick communication between different HU and ECUs, through: The clear hierarchy and structure of CAN module achieved that the complete Telematics system bases on the ECU port which achieved that rapid communication between application layer and hardware layer, through the XAML middle ware it constituting a complete and efficient Telematics system based on ECU side.