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Electric vehicle CAN network anomaly detection method and device

A network anomaly, electric vehicle technology, applied in the bus network, data exchange network, electrical components, etc., can solve the problems of complex algorithms, difficult to meet the real-time requirements of the power CAN network, long delay time, etc., and meet the computing power requirements Low cost, fast and efficient intrusion detection, and low cost of use

Inactive Publication Date: 2017-06-20
CHENGDU RAJA NEW ENERGY AUTOMOTIVE TECH CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the algorithm is too complicated, which puts forward higher requirements on the computing power of the controller chip; this method has a long delay time, and it is difficult to meet the real-time requirements of the power CAN network

Method used

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  • Electric vehicle CAN network anomaly detection method and device
  • Electric vehicle CAN network anomaly detection method and device
  • Electric vehicle CAN network anomaly detection method and device

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] Such as Figure 2-3 As shown, a method for abnormal detection of an electric vehicle CAN network specifically includes the following processes:

[0027] Step 1. The vehicle controller VCU is configured with multiple CAN networks, including the first CAN network, and the power-related controller is configured on the node of the first CAN network, namely CAN1; the power-related controller is an electric The very important controller of the car, which has a great impact on driving and safety, is configured on one CAN network;

[0028] Step 2. When a message is detected, judge whether it is a message transmission between the vehicle controller VCU and the first CAN network, that is, the controller on CAN1;

[0029] Step 3. If it is the message transmission between the vehicle controller VCU and the first CAN network, that is, the controller on CAN1, then use the m...

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Abstract

The invention relates to the field of electric vehicles and discloses an electric vehicle CAN network anomaly detection method. The method comprises a step of configuring a vehicle control unit with multiple CAN networks which comprise a first CAN network, and configuring a controller related to power to the node of the first CAN network, a step of judging whether message transmission is the message transmission between the vehicle control unit and the first CAN network or not when a message is detected, a step of detecting whether external equipment transmits a virtual message by using a mode of receiving a transmission message ID if so, and a step of judging whether the vehicle control unit has a message transmission fault if not, disconnecting a data terminal power supply if the vehicle control unit has a message transmission fault, judging that a data terminal is invaded by an external network if the fault is recovered after the power supply is disconnected, and judging that the CAN networks are connected to invasion equipment if the vehicle control unit does not have a message transmission fault. According to the scheme, the requirement of the computing ability of a chip is low, the first CAN network can immediately emit fault information, and the real-time requirement of power equipment is satisfied. The invention also discloses an electric vehicle CAN network anomaly detection device.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to an electric vehicle CAN network abnormality detection method and device. Background technique [0002] The electronic control components of electric vehicles (such as micro control unit MCU, battery management system BMS, electric power steering system EPS, brake anti-lock braking system ABS, instrument controller, etc.) are connected to VCU through CAN network to realize mutual communication. Communication, CAN network design did not consider information security at the beginning, vulnerable to malicious attacks, threatening vehicle safety. With the development of Internet technology, it has become a trend for cars to connect to the Internet through devices such as data terminals. These networked electronic devices may become a way for hackers to invade the vehicle CAN network system. [0003] In the traditional method, the sending end uses the AES encryption algorith...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/40H04L29/06
CPCH04L12/40078H04L63/1425H04L2012/40215H04L2012/40273
Inventor 陈俊兵盛旺王冬陈一军何伟
Owner CHENGDU RAJA NEW ENERGY AUTOMOTIVE TECH CO LTD
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