Design And Analysis Main Node On Auto Body Network Of The CAN-bus

Automobile network is an important development direction for modern automobiles which is also an inevitable trend of the science and technology development. As the mainstream standards for the Automobile network system, CAN-bus technology accelerated the application of network in automobile, simplified automotive electric circuit and enhanced the reliability and facility of automobile electronic control system. Since the automobile body electronic convenience system for the CAN-bus is an important subsystem of the automotive network control system, while the central control unit and the left front door control unit in the automobile body are the core part of the electronic convenience system, this paper did the research on the central control unit and the left front door control unit of the automobile body electronic convenience system in CAN-bus.1.This paper summarized research applied status of CAN-bus in the domestic and overseas; introduced the development and specialty of network in automobile bus generalized and analyzed the CAN-bus related theory and technology points;.2.Designed and built a CAN-bus Test-Control analytical system for automobile body electronic convenience system, used it to test and analyze the CAN-bus on automobile body electronic convenience system. Educed the data frames of signals which delivered on the CAN-bus, analyzed the basic operate characteristics and method of automobile body electronic convenience system; summarized the data frames which were related with central control unit and the left front door control unit, and made a comprehensive analyse on the central control unit and the left front door control unit.3.According to the test and analyse of the central control unit, designed central control unit by LabVIEW, connected to the original automobile body electronic convenience system Can-bus through PCI/CAN Card, conducted online testing and analyzing by using of upper-computer analysis software.4.Analyzed the left front door control unit in original automobile body electronic convenience system, designed a more complete left front door control unit, solved the problem of the original one can not accept the remote CAN control data frames to control the left front window and rearview mirror.