Compared To Fixed Reference Patents (Class 303/134)
  • Patent number: 5819193
    Abstract: A circuit arrangement for conditioning and evaluating the signals emanating from wheel sensors in a first stage determines the sensor(s) supplying the highest useful signal at very low wheel speeds. The signal from the most sensitive sensor is delivered when the wheel speed is below the predetermined speed threshold. Above the speed threshold, however, the signal from a sensor arranged on a driven vehicle wheel is used as the vehicle speed signal. The circuit is especially suitable for anti-lock and traction slip control systems which supply speed signals which can also be evaluated for other vehicle control or regulating systems.
    Type: Grant
    Filed: November 2, 1995
    Date of Patent: October 6, 1998
    Assignee: ITT Automotive Europe GmbH
    Inventors: Jochen Burgdorf, Helmut Fennel