The invention discloses a safety assessment method based on a dangerous scene, and belongs to the technical field of collision avoidance algorithms, and the method comprises the steps: S1, extracting a use case from a database, and adding a scene label; s2, constructing an emergency braking model and an emergency steering model according to the use case state parameters; s3, substituting a plurality of scenes into a danger degree index formula to obtain a critical condition threshold value; and S4, according to the critical condition threshold, performing scene safety evaluation, and selecting a proper collision avoidance method. According to the method, on the basis of a CIDAS accident library and scene working conditions including various road types, collision forms and collision speeds, key function scenes and key logic parameters are extracted from the CIDAS accident library, marking is carried out again, and a multi-classification accident library for risk assessment is formed. And establishing a driver emergency braking model and an emergency steering model, converting into an optimization problem, and solving parameters of a motion track. And judging which strategy should be adopted at the current moment by judging whether the solution can be solved or not. When real-time system parameters are transmitted in, the safety of the current vehicle can be quickly evaluated.
本发明公开了一种基于危险场景的安全性评估方法,属于避撞算法技术领域,包括:S1从数据库中提取用例,添加场景标签;S2根据用例状态参数,构建紧急制动模型和紧急转向模型;S3通过将多个场景代入危险程度指标公式,得出临界条件阈值;S4依据临界条件阈值,进行场景的安全性评估,选择合适避撞方法。本发明依托CIDAS事故库,包含各种道路类型、碰撞形式、碰撞速度的场景工况,从中提取关键功能场景和关键逻辑参数,重新打标,形成针对危险评估的多分类事故库。建立驾驶员紧急制动模型和紧急转向模型,转化为最优化问题,求解运动轨迹的参数。通过能否求解,判断当前时刻应该采取何种策略。当实时系统参数传入时,可迅速评估当前车辆的安全性。
Safety assessment method based on dangerous scene
一种基于危险场景的安全性评估方法
2023-10-17
Patent
Electronic Resource
Chinese
IPC: | B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion |
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