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Safety Analysis Method of Lane Keeping Assist System Based on System Theory Hazard Analysis

A technology for lane keeping, assist system

Active Publication Date: 2021-01-26
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is little research on the system theory hazard analysis method in the lane keeping assist system in unmanned driving.

Method used

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  • Safety Analysis Method of Lane Keeping Assist System Based on System Theory Hazard Analysis
  • Safety Analysis Method of Lane Keeping Assist System Based on System Theory Hazard Analysis
  • Safety Analysis Method of Lane Keeping Assist System Based on System Theory Hazard Analysis

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[0021] specific implementation plan

[0022] In order to make it easier for those skilled in the art to understand and implement the present invention, the present invention will be further described in detail and in-depth below in conjunction with the accompanying drawings and embodiments.

[0023] Such as figure 1 As shown, the input of system theory hazard analysis is the system description and design model. In the application scenario of the present invention, it is the description and design model of the lane keeping assist system. Layer control structure, identify the unsafe control behavior, determine how the unsafe control behavior occurs according to the unsafe control behavior, analyze the dangerous situation, and refine the safety constraints, so as to improve the safety performance of the lane keeping assist system.

[0024] The present invention is aimed at the safety analysis process of the lane keeping assist system, such as figure 1 System theory hazard analy...

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Abstract

The invention proposes a safety analysis method for a lane keeping auxiliary system based on system theory hazard analysis, which belongs to the field of unmanned driving technology safety engineering. Including: (1) establishing a hierarchical control structure of the lane keeping assist system, (2) identifying unsafe control behaviors based on the hierarchical control structure, and obtaining the final safety constraints as follows: SC 1 : If the correct turn indicator is activated, i.e. the direction of deviation is in the same direction as the turn indicator, the Lane Keeping Assist system must not carry out corrective measures; SC 2 : If the vehicle changes lanes without using the turn indicators properly, the lane keeping assist system shall warn the driver and provide corrective action; SC 3 : Lane Keeping Assist should provide corrective action if the driver does not respond to the warning sign and the vehicle continues to exit the lane. Compared with the previous security analysis method, the fault coverage area of ​​the present invention is wider, the analysis is more comprehensive, and the analysis result is better for the modern complicated safety demanding system.

Description

technical field [0001] The invention belongs to the field of safety engineering of unmanned driving technology, and relates to a safety analysis method of a Lane Keeping Assistant (LKA for short) system based on system theory hazard analysis. Background technique [0002] In recent years, unmanned driving technology has developed rapidly. With the wide application of unmanned driving systems, the complexity of the system is getting higher and higher, and the interaction between subsystems is also increasing. Safety issues have become a major concern. The safety analysis method can establish an accident model, conduct safety analysis on the system, obtain possible accidents and dangers, and put forward safety requirements for possible dangerous links to improve the safety of unmanned driving systems. [0003] In the traditional analysis method, it is considered that the occurrence of events is a chain, which is suitable for traditional mechanical systems. It is generally beli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W50/14G06K9/00G06F8/20
CPCB60W50/14G06F8/20G06V20/588
Inventor 张辉刘春璐罗乾悦
Owner BEIHANG UNIV
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