Automobile protocol conversion method added based on simulation prelude

Abstract

The invention relates to an automobile protocol conversion method added based on a simulation prelude. The method comprises a data transmitting process from a CAN (controller area network) bus to a LIN (local interconnect network) bus and a data transmitting process from a FlexRay bus to the CAN bus or the LIN bus, the simulation prelude is added in an application layer of an automobile adapter in a data process from the CAN bus or the LIN bus to the FlexRay bus, one to ten data frames of the CAN bus or the LIN bus is / are packed in the FlexRay bus for transmitting, the simulation prelude is analyzed in the application layer of the automobile adapter in the data process from the FlexRay bus to the CAN bus or the LIN bus, and the one to ten data frames of the CAN bus or the LIN bus, contained in the FlexRay bus, is / are extracted. The method can realize protocol conversion between the FlexRay bus and the CAN bus as well as the FlexRay bus and the LIN bus, so as to achieve transparent data transmitting, avoid an analyzing process of a gateway on all effective data, and reduce network time delay.

Description

technical field [0001] The invention relates to a vehicle bus protocol conversion method based on analog header addition, which is applied in the technical field of vehicle electronics. Background technique [0002] With the development of automotive electronic technology, people have higher and higher requirements for automotive safety performance. More and more electronic control modules in cars are connected by the vehicle network, which makes the communication system more complex. As the backbone network of a new generation of automotive internal networks, FlexRay adopts a time-driven mechanism, has the characteristics of high bandwidth and good fault tolerance, and has certain advantages in real-time, reliability and flexibility. [0003] However, the CAN bus is still the mainstream of the vehicle backbone control network, and the LIN bus and the MOST bus (for vehicle multimedia) coexist. Therefore, in order to integrate the FlexRay bus into the vehicle control network...

AI Technical Summary

Problems solved by technology

[0004] At present, there are also some protocol conversion methods between FlexRay bus and CAN bus or LIN bus, but most of them are to analyze the data content and related ID information of both parties, perform complex processing, and then convert them into the content of the other party's protocol format for forwarding, which increases the The complexity of the adapter or gateway used for protocol conversion, and the gateway needs to save the complete agreement content of both parties, and it needs to analyze the valid data for each data forwarding, and the final network receiving node also needs to perform data analysis, which invisibly increases network delay

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