Electric automobile distributed controller information safety method and system

Abstract

The invention relates to an electric automobile distributed controller information safety method and system. The information safety method is characterized in that an embedded MCU (Microprogrammed Control Unit) and a CAN (Controller Area Network) transceiver are added in each electric automobile controller, and are mutually connected in each electric automobile controller; the embedded MCU is connected with an existing main MCU in each electric automobile controller so as to form a communication unit of the corresponding electric automobile controller; the communication units are connected through respective CAN transceiver so as to form a distributed framework to carry out CAN information transceiving; an encryption and decryption algorithm is built in the embedded MCU in each communication unit so as to encrypt and decrypt CAN information at real time and carry out safety isolation protection. The information safety method provided by the invention can be used for monitoring and controlling electric automobile controller network data information transmission at real time, so that the safety monitoring and protection of the CAN information are effectively ensured.

Description

technical field [0001] The present invention relates to the technical field of vehicle-mounted local area network security communication strategies, in particular to an information security method and system for a distributed controller of an electric vehicle. Background technique [0002] With the vigorous promotion and use of electric vehicles, the diversification and integration of electric vehicle functions and the rapid development of electric vehicle industrialization, the increase and application of various vehicle-mounted electronic devices are gradually popularized in the mass market. The function of the high-voltage system is to ensure the transmission of power and electric energy of the entire electric vehicle system, and to detect insulation faults, open circuit faults, ground faults and high-voltage faults of the entire high-voltage system at any time, so as to ensure the safety of equipment and personnel as the primary task. It is also one of the key technologi...

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Problems solved by technology

[0004] The present invention aims at the problems that the CAN information security of the existing electric vehicle controllers cannot be guaranteed, and the information communicated between the controllers is extremely easy to be illegally stolen, which leads to the leakage of the driving electronic control information and the decoding of the lock code, etc., and proposes an electric vehicle controller. The automobile distributed controller information security method, adding embedded MCU and CAN transceiver to each electric vehicle controller and forming a corresponding communication unit together with the main MCU, and can further connect each communication unit through its respective CAN transceiver Connect to form a distributed architecture to send and receive CAN information, effectively use the embedded MCU with built-in encryption and decryption algorithms to realize real-time encryption and decryption of CAN information and perform "firewall" security isolation protection, monitor and protect the real-time CAN information of the controller, Ensure the security and accuracy of real-time transmission of electric vehicle controller network data

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