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STEERING RETENTION STATE JUDGING DEVICE, DRIVER WAKEFULNESS PREDICTING DEVICE, AND CORRECT COURSE KEEPING DEVICE

  • US 20080262676A1
  • Filed: 03/10/2008
  • Published: 10/23/2008
  • Est. Priority Date: 03/12/2007
  • Status: Active Grant
First Claim
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1. A steering wheel retention state judging device comprising:

  • a torque application unit that applies a torque on a steering wheel of a vehicle;

    an angle sensor that detects a steering angle of the steering wheel; and

    a steering wheel retention state judging unit that judges a retention state of the steering wheel by the driver, based on the steering angle of the steering wheel when the torque is applied by the torque application unit.

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