Arrangement and method for mitigating a forward collision between road vehicles

  • US 10,843,687 B2
  • Filed: 01/15/2018
  • Issued: 11/24/2020
  • Est. Priority Date: 01/26/2017
  • Status: Active Grant
First Claim
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1. An arrangement for mitigating a forward collision between a host vehicle and an oncoming vehicle, the host vehicle having one or more sensors arranged to monitor a road ahead of the host vehicle and a braking system connected to wheel brakes thereof, the arrangement comprising:

  • a vehicle forward collision threat evaluation system configured to;

    utilize the one or more sensors to establish presence of an oncoming vehicle,estimate parameters associated with the oncoming vehicle,utilize the estimated parameters to predict a future path of the oncoming vehicle,utilize host vehicle parameters to predict a future path of the host vehicle, andassess the predicted future paths of the oncoming vehicle and of the host vehicle to determine whether a forward collision between the host vehicle and the oncoming vehicle is likely unavoidable assuming freedom for performing avoidance maneuvers for both the host vehicle and the oncoming vehicle in the prediction of the respective future paths of the host vehicle and the oncoming vehicle using an assessment of scenarios for possibilities of the host vehicle to avoid the forward collision and scenarios for possibilities of the oncoming vehicle to avoid the forward collision, such that the forward collision is determined as likely unavoidable when determined best case scenarios for both the host vehicle and the oncoming vehicle are predicted to end in the forward collision; and

    a forward collision mitigation brake controller configured to control the braking system to control wheel brakes of the host vehicle to reduce a relative longitudinal velocity between the host vehicle and the oncoming vehicle at a predicted collision instant only when determined that a forward collision between the host vehicle and the oncoming vehicle is likely unavoidable at a determined relative longitudinal velocity between the host vehicle and the oncoming vehicle above a first threshold, the first threshold being selected such that passive safety systems of the host vehicle are configured to handle a forward collision at relative longitudinal velocities below the first threshold.

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