Collision avoidance system for vehicle

  • US 10,875,527 B2
  • Filed: 02/18/2019
  • Issued: 12/29/2020
  • Est. Priority Date: 04/10/2013
  • Status: Active Grant
First Claim
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1. A vehicular collision avoidance system, said vehicular collision avoidance system comprising:

  • a forward-viewing camera disposed at a windshield of a vehicle equipped with said vehicular collision avoidance system, wherein said forward-viewing camera views through the windshield to exterior of the equipped vehicle and has a field of view at least forward of the equipped vehicle;

    a rearward-viewing camera disposed at a rear portion of the equipped vehicle, wherein said rearward-viewing camera has a field of view at least rearward of the equipped vehicle;

    an electronic control unit;

    wherein said electronic control unit receives image data captured by said forward-viewing camera and receives image data captured by said rearward-viewing camera;

    wherein said electronic control unit comprises an image processor operable to process image data captured by said forward-viewing camera and to process image data captured by said rearward-viewing camera;

    wherein, responsive at least in part to image processing by said image processor of image data captured by said forward-viewing camera, said vehicular collision avoidance system detects vehicles present forward of the equipped vehicle;

    wherein, responsive at least in part to image processing by said image processor of image data captured by said rearward-viewing camera, said vehicular collision avoidance system detects vehicles present rearward of the equipped vehicle;

    wherein the field of view of said rearward-viewing camera at least encompasses (i) a traffic lane that the equipped vehicle is in on a road the equipped vehicle is traveling along and (ii) at least one traffic lane that is adjacent to the traffic lane that the equipped vehicle is in on the road the equipped vehicle is traveling along;

    wherein said vehicular collision avoidance system is operable to determine that a vehicle detected rearward of the equipped vehicle is traveling in the same traffic lane that the equipped vehicle is in on the road the equipped vehicle is traveling along;

    wherein said vehicular collision avoidance system is operable to determine that a vehicle detected rearward of the equipped vehicle is traveling in a traffic lane that is adjacent to the traffic lane that the equipped vehicle is traveling in on the road the equipped vehicle is traveling along;

    a rearward-sensing radar sensor disposed at the equipped vehicle;

    wherein said rearward-sensing radar sensor senses at least rearward of the equipped vehicle;

    wherein said rearward-sensing radar sensor captures sensor data;

    wherein said electronic control unit receives sensor data captured by said rearward-sensing radar sensor; and

    wherein, responsive to at least one selected from the group consisting of (i) data processing at said electronics control unit of image data captured by said rearward-viewing camera and (ii) data processing at said electronics control unit of sensor data captured by said rearward-sensing radar sensor, said vehicular collision avoidance system (a) determines speed difference between the equipped vehicle and another vehicle present rearward of the equipped vehicle that is approaching the equipped vehicle and (b) determines distance from the equipped vehicle to the other vehicle present rearward of the equipped vehicle that is approaching the equipped vehicle and based on such determinations, determines that impact with the equipped vehicle by the other vehicle is imminent.

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