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Safety upgrading management system and method applied to automobile ECU

A security upgrade and management method technology, applied in the field of security upgrade management system, can solve problems such as inability to use vehicles, inconvenient use of vehicles for users, and waste of client network traffic.

Active Publication Date: 2019-11-15
SHANGHAI HEQIAN ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the existing technology, even if there is only a slight difference between the new package and the old package, a complete new installation package is downloaded for each version upgrade for replacement installation. This full update method not only wastes more client network traffic, but also Also increases the time consumed by the upgrade process
The user cannot use the vehicle during this period of ECU repair, which will inevitably bring inconvenience to the user. Therefore, compressing the time of ECU repair is a technical problem that needs to be urgently solved.
At the same time, it is also necessary to inform the repair time of the vehicle ECU software, so that users can choose an appropriate time period to upgrade according to their own schedule, and the challenge brought about by compressing the upgrade time comes from reducing the size of the upgrade package as much as possible

Method used

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  • Safety upgrading management system and method applied to automobile ECU
  • Safety upgrading management system and method applied to automobile ECU
  • Safety upgrading management system and method applied to automobile ECU

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] This embodiment provides a safety management method applied to automobiles, which specifically includes:

[0090] The central gateway in the car receives the upgrade file from the server, and the upgrade file is transmitted through the central gateway to the ECU that needs to be upgraded for upgrade;

[0091] The intrusion detection module monitors the in-vehicle network in real time. When a packet containing attack code is found in the upgrade file or the vehicle network is attacked, the intrusion detection module will feed back the detected attack information to the security management module;

[0092] When the security management module receives the attack information fed back from the intrusion detection module, the security management module sends a control command to the protection module to prevent the target ECU from being invaded;

[0093] The protection module is configured to correspond to the security module, and can adopt corresponding anti-attack strategie...

Embodiment 2

[0105] The present embodiment provides a kind of method that makes ECU lose the data packet that contains malicious code, specifically comprises: See image 3 . image 3 a is the format of the data frame in the CAN message, image 3 b is the format of the remote frame in the CAN message,

[0106] image 3 In a, the format of the data frame in the CAN message is a standard frame, and the frame start is represented by 1 bit;

[0107] The arbitration section contains 11bit ID (CAN message identifier) ​​and remote request bit (Remote TransmissionRequest, RTR), ID is distributed from ID28 to ID18, and the upper 7 bits are all recessive; RTR: remote request bit, dominant (0) means Data frame, recessive (1) means remote frame.

[0108] Control segment: composed of 6 bits, indicating the number of data bytes to be transmitted, including reserved bits IDE / r1, r0 (1bit), DLC (4bit).

[0109] IDE: Identifier Extension Bit, the identifier extension bit, which is located in the contro...

Embodiment 3

[0123] see Figure 4 a to Figure 4 c, it describes the method that embodiment 1 obtains the upgrade package of embodiment 1 provided in this embodiment, the upgrade file at least includes a patch package, and the patch package is performed by matching the benchmark patch package with the supplementary package of the ECU to be upgraded synthesis,

[0124]The formation methods of baseline patch pack and make-up pack include:

[0125] Step 1: Analyze the difference between the new file and the old file respectively, find out the difference between the new file and the old file, obtain the difference data package between the new file and the old file, and extract and package the difference data package to form a patch package; repeat the steps 1. Until the patch packs corresponding to the new files and all the old files of different historical versions are obtained;

[0126] Specifically, in the process of ECU bug repair, it is impossible to fix it once and for all, and its bu...

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Abstract

The invention provides a safety upgrading management system and method applied to an automobile ECU. The system comprises a safety management module, an intrusion detection module and a central gateway, a protection ECU and a vulnerability ECU, wherein the intrusion detection module monitors an in-vehicle network in real time; when it is found that in-vehicle network upgrading is attacked, attackinformation can be fed back to the safety management module in time; the safety management module issues a control instruction to the protection ECU; the protection ECU sends the resistance strategy to the ECU which may be attacked or has been attacked to resist the attack; according to the ECU upgrading method and device, the small compensation package is introduced into the upgrading file in theupgrading process, the compensation package is introduced to replace service packs of different historical versions, the size of the data package needed by upgrading can be greatly reduced, and meanwhile the transmission time of ECU upgrading service packs is saved.

Description

technical field [0001] The invention relates to the field of automobile ECUs, in particular to a safety upgrade management system applied to automobile ECUs and a method thereof. Background technique [0002] With the popularization of automobiles, more and more automobiles have entered thousands of households, but this also brings about safety issues about automobiles. Recently, many automobile manufacturers and research institutions are promoting smart cars, making cars more intelligent and humanized. In the automotive industry, developments such as self-driving cars and advanced driver assistance systems (ADAS), ABS (anti-lock braking system), etc. have become the future direction of technology development. When these functions are installed in vehicles, the number of electronic control units (ECUs) in automobiles is increasing, and more than 100 ECUs (electronic control units) are required to control vehicle systems, which increases software size and logic complexity. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L12/40G06F8/65
CPCH04L63/1416H04L63/1433H04L63/123H04L63/0428H04L12/40006G06F8/65H04L2012/40215H04L2012/40273
Inventor 肖文平何敖东王学栋陈斌张航
Owner SHANGHAI HEQIAN ELECTRONICS TECH CO LTD
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