Warning system for vehicle

  • US 5,757,949 A
  • Filed: 01/24/1996
  • Issued: 05/26/1998
  • Est. Priority Date: 01/27/1995
  • Status: Expired due to Term
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First Claim
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1. A warning system for a vehicle having at least one wheel, an accelerator pedal, and a brake system with a brake pedal, said warning system comprising:

  • a pair of cameras mounted on the vehicle for taking a front picture thereof and for generating image signals;

    a traveling speed sensor connected with the at least one wheel for detecting a vehicle speed and for producing a traveling speed signal;

    an accelerator sensor mounted on the vehicle for detecting a depression degree of the accelerator pedal and for outputting an accelerator signal;

    a brake switch connected with the brake system for detecting whether the brake pedal is depressed or not and for generating a brake signal;

    an image recognizing means responsive to the picture signal for obtaining three-dimensional image data about road conditions and traffic conditions ahead of the vehicle and for producing a distance picture representing thereof;

    a curve detecting means responsive to the distance picture for recognizing a curve in front of the vehicle and for generating a curve signal;

    a radius calculating means responsive to the distance picture and curve signal for computing a curvature radius ahead of the vehicle and for outputting a curvature radius signal;

    a turning speed calculating means responsive to the curvature radius signal for calculating a turning speed to pass through the curve and for generating a turning speed signal;

    a curve sharpness deciding means responsive to the turning speed signal and the traveling speed signal for determining whether the curve is tight or not and for producing a curvature sharpness signal;

    an off-course travel estimating means responsive to the accelerator signal, the brake signal and the curvature sharpness signal for judging whether the vehicle will pass through the curve at the turning speed and for outputting a decision signal; and

    an alarming device responsive to the decision signal for generating an alarm signal when judged that it is dangerous for the vehicle to pass through the curve at the vehicle speed so as to avoid a dangerous condition before entering the curve.

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  • 2 Assignments
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