Intelligent car body network system

Abstract

An intelligent motorcar body network system comprises a semaphore input module, a front motorcar lamp module, a rear motorcar lamp module, a CAN / LIN gateway module, an electric window module, a wiper module, a central lock module and a rearview mirror module. The present invention applies both CAN and LIN buses for networking, realizing the distributed layout of a network, wherein the front motorcar lamp module, the rear motorcar lamp module, the semaphore input module and the CAN / LIN gateway module are connected together via the CAN bus to construct a network, along with which a motorcar power CAN network forms a large network, and the electric window module, the wiper module, the central lock module, the rearview mirror module and the CAN / LIN gateway module are connected together via the LIN bus to form a LIN network. The present invention is connected with the upper-layer CAN network by means of the CAN / LIN gateway module to perform information interaction. The present invention realizes the functions of information interaction with the motorcar power CAN bus, power supply management, etc. and reduces cost and cabling difficulties.

Description

technical field [0001] The invention relates to an automobile body network control system, in particular to an intelligent vehicle body network control system. Background technique [0002] At present, the automobile body control usually adopts the traditional wiring harness control method and the network control method. Among them, the traditional wiring harness control realizes the control of various parts of the car body through relays, which belongs to open-loop control, with many wiring harnesses and difficult wiring, and its reliability, information monitoring and sharing are all behind the network control system, and will gradually be replaced by the network control method. replaced. The network control method is to realize the control function by forming a local network through the bus. The current network control mainly includes CAN bus and LIN bus. Information interaction is beneficial to the control of the whole vehicle, but due to the high requirements for hard...

AI Technical Summary

Problems solved by technology

The network control method is to realize the control function by forming a local network through the bus. The current network control mainly includes CAN bus and LIN bus. Information interaction is beneficial to the control of the whole vehicle, but due to the high requirements for hardware and high cost, and because the distribution of body parts is relatively scattered, and some of them do not have high requirements for real-time performance, CAN bus is used to realize the network control of the entire body. Its cost is too high, and because CAN is a two-wire communication, the wiring has not been fundamentally improved, and too many nodes on the CAN network affect the performance of the vehicle power CAN with high real-time requirements

[0003] For example, the patent 200510122299.9 "Smart car body network control system device and its control" realizes all parts of the car body with CAN bus, and its CAN network has many nodes, wiring is difficult, and the cost is high

[0004] The LIN bus adopts a master-slave structure and is a single-wire communication, which can greatly reduce the cost of the body network, and at the same time reduce the wiring harness of the body and reduce the difficulty of wiring. However, due to its low speed and low real-time performance, it has high requirements for real-time performance for car lights, etc. The components cannot be satisfied, and at the same time, it cannot exchange information with the CAN network of the powertrain, so that the fault diagnosis and power management of the whole vehicle cannot be guaranteed.

For example, in the patent 200410046989.6 "intelligent body network control system", all body parts are realized by LIN bus. Although it can reduce the difficulty of wiring and reduce costs, it cannot guarantee the real-time performance of components such as lights with high real-time performance, and cannot be integrated with the powertrain. The completed CAN bus is used for information interaction, and the fault diagnosis of the whole vehicle cannot be realized, and the battery management function is realized

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