Data communication method, device and vehicle of in-vehicle bus

Abstract

The present invention provides a data communication method, device and vehicle for a vehicle-mounted bus. The data communication method includes: a sender sends a message, the message includes application data and control domain data, and the control domain data includes a message count value and / or Or the CRC value of the sender, the message count value is added 1 before the message is sent, and the CRC value of the sender is calculated based on the application data and the data identifier value pre-stored by the sender, and the data identifier value is used for Uniquely identifies the message; the receiving end receives the message and judges the continuity of data communication according to the message count value, and calculates the CRC value of the receiving end according to the application data and the data identification value pre-stored by the receiving end. The cyclic redundancy check value and the cyclic redundancy check value of the receiving end judge the encryption and integrity of the data communication. The data communication method, device and vehicle of the in-vehicle bus of the present invention can ensure the continuity, integrity and encryption of end-to-end data communication.

Description

technical field [0001] The present invention relates to the technical field of communication, and in particular, to a data communication method, device and vehicle of a vehicle-mounted bus. Background technique [0002] In the process of information exchange between the sender and receiver of the on-board electronic control unit (ECU), there are various risks of errors due to factors such as software, hardware and environment. Taking CAN bus communication as an example, the possible errors Some packets are repeatedly received, lost, wrongly addressed and delayed, etc., so the continuity, integrity and encryption of end-to-end data communication cannot be guaranteed. SUMMARY OF THE INVENTION [0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. [0004] To this end, the first object of the present invention is to propose a data communication method for an on-board bus, the message of the message sent by ...

AI Technical Summary

Problems solved by technology

[0002] During the process of information exchange between the sending end and the receiving end of the electronic control unit (ECU), there are various risks of errors due to factors such as software, hardware, and the environment. Taking CAN bus communication as an example, possible errors The continuity, integrity and encryption of end-to-end data communication cannot be guaranteed due to repeated reception of messages, loss of messages, wrong addressing and delay, etc.

Images