Anticollision device, collision-prevention device and method for vehicle

Anticollision device, collision-prevention device and method for vehicle

  • CN 104,118,431 B
  • Filed: 04/23/2014
  • Issued: 09/06/2019
  • Est. Priority Date: 04/24/2013
  • Status: Active Grant
First Claim
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1. a kind of anticollision device, collision-prevention device for vehicle comprising:

  • Measuring unit is arranged to measure the movement of opposite vehicle;

    Steering angle sensor is arranged to detect driver and turn to be intended to direction;

    WithElectronic control unit is arranged to determine whether there is and the opposite car based on the measurement result of the measuring unitCollision risk, and when determine there are when risk of collision, brake control signal and steering controling signal are provided to actuatingDevice turns to the wheel in intention direction to control driver, and provides brake release signal, to turn to meaning from the driverScheme contrary wheel release brake force, whereinThe electronic control unit includes;

    Computing unit, be arranged to based on by being mounted in the vehicle vehicle speed sensor, Yaw rate sensor and turnThe speed for the correspondence vehicle predicted to angular transducer and track, and the opposite vehicle is measured by the measuring unitThe position and speed for moving the opposite vehicle obtained calculates risk of collision degree, when the risk of collision degree includes prediction of collisionBetween and the prediction of collision area Chong Die with the opposite vehicle;

    Determination unit, be arranged to determine whether be less than by the collision prediction time that the computing unit calculates it is presetFiducial time;

    WithControl unit is prevented, is arranged to determine that the collision prediction time is less than the preset base when the determination unitWhen between punctual, brake signal is generated based on the detection signal detected by the steering angle sensor, is driven with being maintained at describedThe person of sailing turns to the brake force for being intended to the wheel in direction, and generates steering controling signal, to be anticipated according to the steering of the driverFigure provides steering force,Wherein, it is calculated using the predicted path of the body width of vehicle itself, the body width of opposite vehicle and vehicle itselfThe prediction of collision area,Wherein, the determination unit further determines that whether the prediction of collision area calculated by the computing unit is greater than reference zone,AndWhen the determination unit determines that the prediction of collision area is less than the collision prediction time of the reference zone and the calculatingIt is described to prevent control unit from generating preset brake signal when more than the fiducial time, and when the prediction of collision area is bigIt is described to prevent control unit generation pair when the collision prediction time of the reference zone and the calculating is less than the fiducial timeIt should be in the brake signal of twice of preset brake signal.

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