The invention discloses a vehicle lane change early warning method in different traffic environments, which comprises the following steps of firstly, respectively carrying out natural driving test andlimit test on a vehicle in different traffic environments, and obtaining natural driving test lane change data and limit test lane change data of the vehicle in different traffic environments, according to the limit test lane change data, when the relative speed of the two vehicles is greater than 0, taking the brake deceleration of the rear vehicle in the target lane as an early warning index, determining early warning thresholds under different traffic environments, according to the natural driving test lane change data, when the relative speed is smaller than 0, using the relative distanceas an early warning index, determining early warning thresholds under different traffic environments, and finally, for vehicles running in different traffic environments, selecting corresponding early warning thresholds according to the positive and negative relative speeds, and conducting lane change early warning on drivers of the vehicles. The false alarm rate of the early warning system is effectively reduced, the acceptance degree of a driver to the lane change early warning system is improved, and the early warning effect of the early warning system is improved.
本发明公开了一种不同交通环境下的车辆换道预警方法,首先在不同交通环境下分别对车辆进行自然驾驶试验和极限试验,并获取车辆在不同交通环境下的自然驾驶试验换道数据和极限试验换道数据;然后根据极限试验换道数据,当两车的相对速度大于0时,以目标车道后车的制动减速度作为预警指标,确定不同交通环境下的预警阈值;根据自然驾驶试验换道数据,相对速度小于0时,以相对距离为预警指标,确定不同交通环境下的预警阈值;最后对于行驶在不同交通环境下的车辆,根据相对速度的正负,选择对应预警阈值,对自车驾驶员进行换道预警。有效减少了预警系统的误报率,提高了驾驶人对换道预警系统的接受程度,提高了预警系统的预警效果。
Vehicle lane change early warning method under different traffic environments
一种不同交通环境下的车辆换道预警方法
2020-08-28
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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