Patents by Inventor Jan K. Schiffmann

Jan K. Schiffmann has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20030093201
    Abstract: A vehicle rollover detection apparatus and method are provided for detecting an overturn condition of the vehicle. The rollover detection apparatus includes an angular rate sensor sensing angular rate of the vehicle, and a vertical accelerometer for sensing vertical acceleration of the vehicle. A controller processes the sensed angular rate signal and integrates it to produce an attitude angle. The vertical acceleration signal is processed to determine an inclination angle of the vehicle. The rollover detection apparatus adjusts the attitude angle as a function of the inclination angle and compares the adjusted attitude angle and the processed angular rate signal to a threshold level to provide a vehicle overturn condition output signal. Additionally, the rollover detection apparatus detects a near-rollover event and adjusts the variable threshold in response thereto to prevent deployment of a vehicle overturn condition, thus providing immunity to such events.
    Type: Application
    Filed: December 13, 2002
    Publication date: May 15, 2003
    Inventors: Peter J. Schubert, Edward J. Wallner, David J. Nichols, Jan K. Schiffmann
  • Publication number: 20020128795
    Abstract: An attitude angle estimator and method of estimating attitude angle of a vehicle having an angular attitude rate sensor sensing angular attitude rate of a vehicle, a vertical accelerometer sensing vertical acceleration, and a lateral accelerometer sensing lateral acceleration. An attitude angle estimate is produced and is updated as a function of the sensed angular attitude rate. An acceleration-based attitude angle is determined as a function of the sensed accelerations, and a blending coefficient is provided. A current vehicle attitude angle estimate is generated as a function of the updated attitude angle estimate, the acceleration-based attitude angle, and the blending coefficient.
    Type: Application
    Filed: March 6, 2002
    Publication date: September 12, 2002
    Inventor: Jan K. Schiffmann