面向智能汽车预期功能安全的驾驶场景评价

Evaluation on driving scenarios for safety of intended functionality of intelligent vehicles

智能汽车对驾驶场景的感知能力直接影响到车辆的预期功能安全。为准确可靠地从感知层面进行场景评价,提出一种新的驾驶场景评价方法,该方法运用模糊推理,在分析场景和场景要素的基础上,首先,从驾驶人感知层面进行场景的模糊感知判断,建立场景模糊等级,利用模糊关系,建立场景要素间的联系;然后,按照决策函数计算场景的评价值;最后,验证该评价方法的合理性。结果表明:该方法可综合考虑驾驶人对场景的感知,更全面地认识场景,在场景评价应用方面具有可行性。

Safety of intended functionality of intelligent vehicles was directly affected by their sensing ability of driving scenarios.In order to evaluate scenarios accurately and reliably from a perceptual level,a new evaluation method was proposed.By using fuzzy reasoning and based on analysis of scenarios and elements,fuzzy judgment of scenarios was made from a perspective of drivers'perception,and their fuzzy level was established before correlation between scenario factors was developed by utilizing fuzzy relationship.Then,evaluation value was calculated according to decision function.In the end,rationality of the evaluation method was verified.The results show that this method could achieve a comprehensive understanding of scenarios by integrating driver's perception of them,thus proving to be feasible in scenario evaluation.