The invention discloses a vehicle collision risk early warning method and system, and the method comprises the steps: building a collision risk evaluation sample according to a historical traffic accident sample, and dividing collision risk levels; performing subjective weighting and objective weighting on the collision indexes in the collision risk assessment sample according to a Delphi method and an entropy weight method; taking Nash equilibrium as a coordination target, combining the subjective weight and the objective weight of the collision index by adopting a game theory method, and weighting the collision index according to the obtained optimal weight; and calculating the collision risk of the multi-source traffic data of the vehicle to be predicted according to the weighted collision index, and comparing the obtained collision risk value with a collision risk evaluation sample to obtain a risk level. Calculation of the collision risk situation in a severe traffic environment is supported, various factors related to driving safety can be fused in a complex environment to evaluate the collision risk, and a more scientific and accurate driving decision can be provided for anintelligent networked automobile.
本发明公开了一种车辆碰撞风险预警方法及系统,包括根据历史交通事故样本构建碰撞风险评估样本,并划分碰撞风险等级;根据德尔菲法和熵权法对碰撞风险评估样本中的碰撞指标分别进行主观赋权和客观赋权;以纳什均衡作为协调目标,采用博弈论法将碰撞指标的主观权值和客观权值进行结合,根据得到的最佳权重为碰撞指标赋权;根据赋权后的碰撞指标对待预测车辆的多源交通数据的碰撞风险进行计算,将得到的碰撞风险值与碰撞风险评估样本进行比较,得到风险等级。支持计算恶劣交通环境下的碰撞危险态势计算,能在复杂环境下融合行车安全相关的多种因素来评估碰撞风险,能够为智能网联汽车提供更加科学和准确的行车决策。
Vehicle collision risk early warning method and system
一种车辆碰撞风险预警方法及系统
2020-10-16
Patent
Electronic Resource
Chinese
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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