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Research On In-Vehicle Networking And Its Application In Vehicle Electronic Control Units

Posted on:2011-05-09Degree:MasterType:Thesis
Country:ChinaCandidate:Z T KanFull Text:PDF
GTID:2132360302977969Subject:Mechanical and electrical engineering
Abstract/Summary:PDF Full Text Request
More and more electronic control units (ECUs), which provide more function, safety, efficiency and comfort, are widely used in modern vehicle control systems because of upgrating of ECUs and its increasing performace. In addition, ECUs from different manufactures can't be integrated together because of proprietary interface. In-vehicle networking (IVN) give birth to itself under this background. It developed from p-to-p wiring to proprietary networking and to open interconnected vehicle control and communication networking. ECUs distributed around the vehicle connecte to the communication bus on the base of standerd protocol, making up a vehicle distributed control and communication networking and accomplish distributed control tasks. IVN has good composability and compatibility, complete digital communication, low cost and strong flexibility. IVN is changing tranditional car, bus and tractor, and has becoming a remarkable trend in hybrid power and electrical power vehicle.In this dissertation an IVN solution of two different, three kinds of sub-networkings corresponding to three different applications in the vehicle has been presented. This IVN architecture resolved the problem of bulk wiring harnesses, making easier to connect distributed ECUs that manufactured by different suppliers, and realizing vehicle distributed control. High-speed CAN is adopted in powertrain and safety systems that must satisfy the need of critical real-time control applications. Low-speed and fault tolerant CAN is used for body electronics concerning about comfort and human machine interface such as dashboard. LIN, which is a supplement to CAN, is faced to management of sensors and actuators at very low communication rate and cost. The three kinds of sub-networkings have been connected through a central gateway to share the information of the whole vehicle. Examples are given to depict these functions and interplay between control systems inside a networking and between networkings. This dissertation has researched SAE J1939 Control and Communication Protocol and its application in the in-vehicle networking. J1939 networking can perform good control and communication according to specific control sequence. In addition Vector CANoe has been used to simulate and test the in-vehicle networking and the comprehensive dashboard and other ECUs.
Keywords/Search Tags:In-Vehicle Networking, CAN, SAE J1939, LIN, Dashboard, Gateway
PDF Full Text Request
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