The invention discloses a vehicle following time interval updating method and device and a vehicle cruise control method and device. The vehicle following time interval updating method comprises the steps that: vehicle speed before speed changing, vehicle speed after speed changing, speed changing distance and a speed changing position of a first vehicle are obtained; a variable speed is calculated according to the pre-speed-change vehicle speed, the post-speed-change vehicle speed and the speed change distance; a first numerical value is calculated according to the variable speed and the variable speed distance; according to the corresponding relation between the first numerical value and the car following time interval, the car following time interval corresponding to the first numericalvalue is determined; and the vehicle following time interval is sent to the second vehicle about to pass through the speed changing position so that the second vehicle can adjust the driving speed according to the vehicle following time interval. According to the invention, the vehicle following time interval is determined by considering the actual situation of the road surface, vehicle speed adjustment better conforms to the actual running state, the influence of road surface information change on the self-adaptive cruise system is reduced, the driving experience of a user is improved, and when the road surface condition is not suitable for the self-adaptive cruise system, other vehicle users can be reminded in time to close self-adaptive cruise and change into manual control.

    本发明公开了一种跟车时距更新方法、车辆巡航控制方法及装置。其中一种跟车时距更新方法包括:获取第一车辆的变速前车速、变速后车速、变速距离和变速位置;根据变速前车速、变速后车速和变速距离计算变速度;根据变速度和变速距离计算第一数值;根据第一数值与跟车时距的对应关系,确定与第一数值对应的跟车时距;将跟车时距发送至即将经过变速位置的第二车辆,以便第二车辆根据跟车时距调整行驶速度。本发明考虑到了路面的实际情况确定跟车时距,车辆速度调整更加符合实际运行状态,减小路面信息变化对自适应巡航系统的影响,提高用户驾驶体验,且当路面情况不适于自适应巡航系统时,可以及时提醒其它车辆用户关闭自适应巡航改为手动控制。


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    Title :

    Vehicle following time interval updating method and device and vehicle cruise control method and device


    Additional title:

    一种跟车时距更新方法、车辆巡航控制方法及装置


    Contributors:
    ZHOU LIN (author) / PAN GUODONG (author)

    Publication date :

    2020-06-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    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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