CAN (Controller Area Network/LIN (Local Interconnect Network) bus hybrid network topology structure of vehicle

Abstract

The invention relates to a CAN (Controller Area Network / LIN (Local Interconnect Network) bus hybrid network topology structure of a vehicle. A CAN network and three LIN networks are adopted on a finished body of the vehicle, wherein three CAN nodes are respectively distributed at the left and right sides of a steering column and the tailstock, and a tailstock CAN node is positioned at the tail part of the vehicle; and LIN nodes are distributed according to positions of executing devices, information transmission is implemented by an LIN bus, and CAN / LIN message conversion is implemented between the CAN nodes and the LIN nodes through a CAN / LIN gateway. According to the CAN / LIN bus hybrid network topology structure, a bus network is adopted instead of a traditional wire harness, and the purposes of reducing interference, improving reliability, reducing wire harnesses and saving cost are achieved by using the property advantages of a CAN bus and the LIN bus; and in addition, based on the buses, the comfort property and safety of the vehicle are improved, and the humanized design functions, such as fault diagnosis and anti-pinch property of a vehicle window are increased. According to the CAN / LIN bus hybrid network topology structure, multipath bus transmission is carried out on signals for controlling vehicle lamps, the vehicle window, windscreen wipers and a rearview mirror of the finished vehicle on the basis of the comfort property and safety of the vehicle, and a controller is used for carrying out action driving and status acquisition on the executing devices, such as the vehicle lamp, the vehicle door and a wiper motor instead of a relay.

Description

technical field [0001] The invention belongs to the field of automobile control, and relates to an automobile on-board network technology, in particular to an automobile CAN / LIN bus hybrid network topology structure. Background technique [0002] With the development of the automobile industry, automobiles are also developing towards electronic, intelligent and networked direction. The proportion of automobile electronic control system in the whole vehicle is increasing day by day. More and more electronic control units and sensors will inevitably require more and more More connections. For example, if a traditional line is used, each signal requires at least one wire harness to transmit information, then at least more wire harnesses than the amount of information are needed to complete the control of the body, which increases the cost and the weight of the body. , and more importantly, it brings huge difficulties to the wiring. [0003] Through the search, two published p...

AI Technical Summary

Problems solved by technology

For example, if traditional lines are used, each signal requires at least one wire harness for information transmission, and then at least more wire harnesses than the amount of information are required to complete the control of the vehicle body. This will increase the cost and increase the weight of the vehicle body. , and more importantly, it brings great difficulty to wiring

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