×

Steering-wheel-hold detection for lane keeping assist feature

  • US 8,880,287 B2
  • Filed: 03/06/2013
  • Issued: 11/04/2014
  • Est. Priority Date: 03/06/2013
  • Status: Active Grant
First Claim
Patent Images

1. A method for determining whether a vehicle driver is holding onto a vehicle steering wheel, said method comprising:

  • providing steering torque data from a steering torque sensor and steering angle data from a steering angle sensor;

    applying a band-pass filter at a first specified frequency to the steering angle data and the steering torque data;

    setting a frequency limit equal to the first specified frequency;

    selecting the steering angle data and the steering torque data for a time window of a predefined duration;

    identifying, using a microprocessor, a resonant frequency in the steering angle data or the steering torque data for the time window; and

    determining that the vehicle driver is not holding onto the vehicle steering wheel only if the identified resonant frequency remains greater than the frequency limit for a predefined time period.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×