A vehicle can bus multi-network segment architecture

Abstract

The invention provides a vehicle CAN bus multi-network segment architecture, including a gateway, a CAN bus power network segment, a CAN bus safety network segment, a CAN bus body network segment and a CAN bus diagnostic network segment; the CAN bus The power network segment, the CAN bus safety network segment, the CAN bus body network segment and the CAN bus diagnosis network segment are all connected to the gateway. The invention has the advantages that the number of nodes in each CAN bus network segment and the CAN bus signal load rate can be reasonably controlled; the function of the vehicle model can be expanded on the premise of meeting the design requirements.

Description

technical field [0001] The invention relates to a network segment architecture, in particular to a vehicle CAN bus multi-network segment architecture. Background technique [0002] With the advancement of technology, more and more functions are integrated on the car, and there are more and more parts on the car, such as electronic fuel injection devices, anti-lock braking devices, airbag devices, etc., and there are many parts on the car Controlled by the electronic control unit (ECU), resulting in more and more electronic control units (ECU) on the car. [0003] However, the traditional wiring method, that is, one end of the wire is connected to the switch, and the other end is connected to the electrical equipment, will lead to a sharp increase in the number of cables on the car. The circuit structure becomes complicated, reducing the reliability of the car. [0004] In order to solve this problem, the current practice is to use the controller area network (CAN) to excha...

AI Technical Summary

Problems solved by technology

However, this approach has the following problems: as the number of electronic control units (ECUs) continues to increase, the bus signal load rate of the two network segments will continue to increase, resulting in signal transmission delays

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