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    • 6. 发明授权
    • Forward collision warning system with road-side target filtering
    • 带路边目标过滤的前向碰撞预警系统
    • US08577552B1
    • 2013-11-05
    • US13572776
    • 2012-08-13
    • David Dean Smit
    • David Dean Smit
    • G06F17/00
    • G01S13/931G01S2013/9375G08G1/161G08G1/165G08G1/166G08G1/167
    • A method of filtering/rejecting targets detected by a forward collision warning system of a motor vehicle when entering a curved road segment. The width of a collision threat zone (CTZ) is reduced in one or more stages depending upon continuously-measured values of steering input angle (SIA), driver brake application (DBA), and a yaw rate. The measured values are used to find: a degree of near-past DBA variation during a first look-back period, a degree of near-past SIA change rate during a second look-back period, and a degree of far-past yaw rate change during a third look-back period longer than the first and the second look-back periods. A series of first, second and third width reductions of decreasing severity are applied to the CTZ based upon comparisons of the tracked variations and change rates with respective thresholds. The thresholds are tunable to achieve desired levels or false-target rejection.
    • 一种当进入弯道路段时由机动车的前方碰撞预警系统检测到的目标的过滤/拒绝的方法。 碰撞威胁区域(CTZ)的宽度根据连续测量的转向输入角度(SIA),驾驶员制动应用(DBA)和偏航率等因素在一个或多个阶段减小。 测量值用于发现:在第一个回顾期间接近过去的DBA变化程度,在第二个回溯期间接近过去SIA变化率的程度,以及远远超过偏航率的程度 在比第一和第二回放期长的第三个回顾期间更换。 基于跟踪变化和变化率与相应阈值的比较,将CTZ逐渐减小的一系列第一,第二和第三宽减小的严重程度应用于CTZ。 阈值可调,以达到所需水平或假目标排除。