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

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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

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