Vehicle-mounted local area network (LAN) structure for car and car with the same

Abstract

The invention provides a vehicle-mounted local area network (LAN) structure for a car and the car with the same. The vehicle-mounted LAN structure comprises a car control module (GM), a power bus, a car body bus and a management bus, wherein the car GM is provided with a first port, a second port, a third port, a fourth port; and the power bus, the car body bus and the management bus are respectively connected with the first port, the second port and the third port. The GM is respectively connected with an angle turning converter, a power taking controller, an intelligent control system, an engine management system, a power control module, an anti-theft control system and a retarder system through the power bus. The GM is respectively connected with a combination instrument, a driver lateral car door controller, a passenger lateral car door controller, a safety air bag, an air conditioning system, an intelligent switch control system and a servo steering system through the car body bus. The GM is respectively connected with a front module battery management system and a back module battery management system through the management bus. The vehicle-mounted LAN structure for the car is high in reliability and real-time performance, and strong in expansibility.

Description

technical field [0001] The invention relates to the technical field of automobiles. A vehicle-mounted local area network structure for automobiles and an automobile with the same are specially designed. Background technique [0002] In a traditional car, it usually controls each functional unit of the car, such as the corner converter LWS, the engine management system EMS, the power control module VCU, the anti-theft control system IMMO, the instrument cluster CMIC, the airbag SRS, the air conditioning system HVAC, and the follow-up steering System AFS and battery management system BM usually carry out data transmission through a bus (CAN) network. [0003] However, since power control is the core of the vehicle network, for power modules, such as engine management system EMS and intelligent control system TCU, the reliability and real-time performance of data communication are the key factors for the quality of the entire network. Partial information sharing and data exch...

AI Technical Summary

Problems solved by technology

In addition, some safety-related modules, such as the intelligent stability system (ESP), etc., have high real-time requirements for the whole vehicle, and also need to read data from the EMS and TCU in real time. A bus (CAN) for data transmission will cause the bus (CAN) to carry too much load, causing congestion, so that the data cannot be transmitted to the corresponding position in time, affecting the stability and safety of the car

[0004] In addition, for each functional module of the car, some modules need to have high-speed data transmission, and some modules do not need high-speed data transmission. Therefore, data transmission at the same rate through a bus (CAN) will result in some data transmission. The transmission speed does not meet the requirements, while others may cause a waste of bandwidth, and the network scalability is limited

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