汽车工程 ›› 2024, Vol. 46 ›› Issue (4): 577-587.doi: 10.19562/j.chinasae.qcgc.2024.04.003

• • 上一篇    

感知系统触发条件穿透率评估方法研究

陈君毅1(),刘镇源1,杨雪珠2,王天辰1,李海霞2,贾通1,邢星宇1,吴新政1   

  1. 1.同济大学汽车学院,上海 201804
    2.中国第一汽车股份有限公司,长春 130011
  • 收稿日期:2023-09-30 修回日期:2023-10-22 出版日期:2024-04-25 发布日期:2024-04-24
  • 通讯作者: 陈君毅 E-mail:chenjunyi@tongji.edu.cn

Evaluation Method for the Penetration Rate of Perception System Triggering Conditions

Junyi Chen1(),Zhenyuan Liu1,Xuezhu Yang2,Tianchen Wang1,Haixia Li2,Tong Jia1,Xingyu Xing1,Xinzheng Wu1   

  1. 1.School of Automotive Studies,Tongji University,Shanghai  201804
    2.China FAW Group Corporation,Changchun  130011
  • Received:2023-09-30 Revised:2023-10-22 Online:2024-04-25 Published:2024-04-24
  • Contact: Junyi Chen E-mail:chenjunyi@tongji.edu.cn

摘要:

预期功能安全问题制约着自动驾驶汽车的落地。自动驾驶感知系统面临的各种极端行驶环境等极易引起预期功能安全问题。因此,须按照现有预期功能安全标准,在安全分析阶段识别并评估种类多且数量大的触发条件,筛选高价值触发条件为后续测试验证提供测试场景输入。本文中首先基于对触发条件在自动驾驶系统中的风险演化过程的分析,提出一套包括暴露率、穿透率和危害率的三维感知系统触发条件评估体系。随后,基于层次分析法构建了触发条件穿透率量化评估方法。最后,针对某量产车型的融合感知系统分析并选取15个触发条件,构建测试用例并开展封闭场地测试,评估上述触发条件的穿透率。最终经计算筛选得到3个高风险触发条件,验证了触发条件穿透率量化评估方法的可行性。

关键词: 感知系统, 预期功能安全, 触发条件, 量化评估, 封闭场地测试

Abstract:

The issue of safety of the intended functionality (SOTIF) restricts the application of autonomous vehicles. The various extreme driving environments faced by the perception system of autonomous vehicles are highly susceptible to SOTIF problems. Therefore, it is necessary to identify and evaluate a large number of triggering conditions in the safety analysis phase according to the existing SOTIF standards to select high-value trigger conditions so as to provide test scenarios for subsequent test and validation. Firstly, a set of three-dimensional evaluation system for triggering conditions of the perception system including exposure rate, penetration rate and hazard rate is proposed, based on the analysis of the risk evolution process of triggering conditions in autonomous driving system. Subsequently, based on the analytic hierarchy process (AHP), a quantitative evaluation method for the penetration of triggering conditions is constructed. Finally, 15 triggering conditions for a mass-produced vehicle fusion perception system are selected and analyzed. Test cases are built and the closed site tests are conducted to evaluate the penetration rate of the above triggering conditions. Finally, through the calculation, 3 high-risk triggering conditions are screened, which verifies the feasibility of the quantitative evaluation method of trigger condition penetration rate.

Key words: perception system, safety of the intended functionality, triggering conditions, quantitative evaluation, closed site test