The invention provides a driver fatigue degree based front collision early warning control method, which comprises the following steps of: counting the number of fatigue characteristic behaviors of adriver through an in-vehicle camera on the basis of a computer image detection technology, wherein the fatigue characteristic behaviors comprise blinking, yawn and head lowering; establishing a driverfatigue evaluation model through the fatigue characteristic behaviors and the total driving time, and defining the fatigue degree level of the driver at the current moment; designing different frontcollision early warning control methods according to different fatigue degree levels; besides, on the basis of TTC collision time, providing STTC safety collision avoidance time, and considering the minimum safety distance estimated based on a driver. According to the method, different front collision early warning control strategies can be adopted according to the fatigue degree of the driver atthe current moment, unnecessary early warning is reduced when the driver is in a good state, and the early warning strength and the driving safety are improved when the driver is in a fatigue state.
本发明提供了一种基于驾驶员疲劳程度的前方碰撞预警控制方法,通过车内摄像机,基于计算机图像检测技术,统计驾驶员的疲劳特征行为发生次数;疲劳特征行为包括眨眼、打哈欠、低头,通过疲劳特征行为和总驾驶时间,建立驾驶员疲劳评估模型,定义当前时刻驾驶员疲劳程度等级;根据不同的疲劳程度等级,设计不同的前方碰撞预警控制方法;此外,在TTC碰撞时间的基础上,提出了STTC安全避撞时间,考虑了基于驾驶员预估的最小安全距离;本发明能根据当前时刻驾驶员疲劳程度,采取不同的前方碰撞预警控制策略,在驾驶员状态良好时,减少不必要的预警,在驾驶员状态疲劳时,增加预警力度,提高行车安全。
Front collision early warning control method based on fatigue degree of driver
一种基于驾驶员疲劳程度的前方碰撞预警控制方法
2021-04-02
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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