The invention provides a vehicle rear collision early warning method, and belongs to the technical field of vehicles. The problem that in the prior art, large casualties still exist when collision occurs is solved. The vehicle rear collision early warning method comprises the following steps that the speed difference V1 and the distance difference S1 between a vehicle and a rear target object are obtained; when it is judged that the speed difference V1 is smaller than a first speed difference threshold value and the distance difference S1 is smaller than a first distance difference threshold value, the speed difference V2 and the distance difference S2 between the front target object and the vehicle are obtained; when it is judged that the speed difference V2 is larger than or equal to a second speed difference threshold value and the distance difference S2 is larger than or equal to a second distance difference threshold value, the vehicle is controlled to execute accelerated advancing operation; and when it is judged that the speed difference V2 is smaller than a second speed difference threshold value and/or the distance difference S2 is smaller than a second distance difference threshold value, the vehicle is controlled to execute braking operation or execute lane changing operation towards the adjacent lane. Damage caused by collision of the rear portion of the vehicle can be reduced.
本发明提供了一种车辆后部碰撞预警方法,属于汽车技术领域。它解决了现有的技术在发生碰撞时仍存在较大伤亡的问题。本车辆后部碰撞预警方法包括如下步骤:获取本车车辆与后方目标物的速度差V1以及距离差S1;在判断速度差V1小于第一速度差阈值且距离差S1小于第一距离差阈值时获取前方目标物与本车车辆的速度差V2以及距离差S2;在判断速度差V2大于或等于第二速度差阈值且距离差S2大于或等于第二距离差阈值时控制车辆执行加速前进的操作;在判断速度差V2小于第二速度差阈值和/或距离差S2小于第二距离差阈值时控制车辆执行制动操作或者执行向相邻车道变道的操作。本发明能够降低车辆后部碰撞所造成的伤害。
Vehicle rear collision early warning method
一种车辆后部碰撞预警方法
2021-04-16
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 / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
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