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A Research on Communication Network of Automobile Comfort Electronic System Based on OSEK COM Specification

Author: WangKe
Tutor: HuangZhi；YangYanPing
School: Hunan University
Course: Vehicle Engineering
Keywords: vehicle comfort system communication network OSEK COM
CLC: U463.6
Type: Master's thesis
Year: 2009
Downloads: 136
Quote: 2
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Abstract


With the enhancement of intelligeny and electronization in vehicle, the number of vehicle ECUs is increasing. In order to simplify the growing number of vehicle wiring harness, improve system reliability and share data resources, communication network technology of automobile comfort systems has become a research focus. To meet the requirement of high reliability, low cost, scalable request, the paper designed a CAN-LIN hybrid communication network for automobile comfort system based on OSEK COM specification.The dissertation generalized the development actuality and trend of automobile comfortable communication network, discussed the mainstream Vehicle network communication protocol, automotive software architecture standard, and gave detailed description of the market dominant CAN, LIN bus from message frame format, principle of network architecture and transmission, etc. In accordance with the requirements of the modular, hierarchical design structure, the paper designed the COM and NM layer, which are in the line with the OSEK specification. These two layers make the software of application program independent of the underlying hardware, which maximize the software of greatest portability, maintainability and scalability. Under the design architecture of vehicle comfort system communication network, the software and hardware of ECU nodes are designed. And taken some important node for example, schematic diagrams and analysis of hardware were proposed, and the software design structure and pseudo-code were also given here.The paper formulated the communication protocol in correspondence with ISO / OSI model for vehicle comfort system based on the standard of CAN2.0A and gave detailed introduction of the protocol with respect of the physical layer, data link layer, application layer and Network management layer.The feasibility of the communication network designed was verified in terms of local and network control.

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CLC: > Transportation > Road transport > Automotive Engineering > Automotive structural components > Electrical equipment and accessories
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