Vehicle body CAN bus control system

Abstract

An auto body CAN bus control system. The CAN bus technology substitute the digital serial communication protocol for traditional parallel wire control and possesses function of point-to-point, one point-to-multipoint and universal broadcasting transmission and achieves data resource sharing; The CAN reduces input demand for combined switch and other switch; current passing combined switch in traditional power supply system is supplied current for electricity consumer itself and amounts to several amp. to dozens of amp., while current is only several milliampere when changing to multi-path bus transmission system and accounts for one part per thousand of original current, thus reliability of parts is promoted; the electric appliances are generally connected by following strictly the SAEJ1939 communication protocol; the modularized, integrative and miniaturized structure facilitates batch production and spatial disposition; the new node can be directly hanged to bus when the CAN bus needed to be enlarged. It is subject to few cabling, enlarging and remodeling without developing and changing wiring harnesses, thereby simplifying production process and reducing production cost.

Description

Technical field: [0001] The invention relates to an automobile bus control system, in particular to an automobile body CAN bus control system. Background technique: [0002] With the rapid development of vehicle electronic technology, there are more and more electronic control devices and electronic actuators on vehicles, such as electronic fuel injection systems, automatic transmission systems, active suspensions, anti-lock braking devices (ABS), airbags devices and electronically controlled door and window devices, etc. These advanced functions make automobiles more and more intelligent, comfortable and safe, and also make automobile electronic and electrical systems more and more complex. The traditional vehicle electronic system uses a single point-to-point communication method between electronic devices. Each electronic control unit has its own set of sensing and wiring systems, and there is little connection between them. The total length of the wires of the car exce...

AI Technical Summary

Problems solved by technology

These advanced functions make the car more and more intelligent, comfortable and safe, and also make the electronic and electrical system of the car more and more complex

The traditional vehicle electronic system uses a single point-to-point communication method between electronic devices. Each electronic control unit has its own set of sensing and wiring systems, and there is little connection between them. The total length of the wires of the car is more than 2km, which not only consumes a lot of metal wires, but also causes serious electromagnetic interference due to the criss-crossing of the wiring, which reduces the safety and reliability of the overall control system of the car and increases the difficulty of fault maintenance.

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