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Automatic side view mirror tracking system

  • US 5,719,713 A
  • Filed: 02/28/1994
  • Issued: 02/17/1998
  • Est. Priority Date: 02/28/1994
  • Status: Expired due to Fees
First Claim
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1. An automatic mirror position tracking system for use on an articulated vehicle having a first portion and a second portion, the system comprising:

  • a mirror movably mounted on the first portion of the articulated vehicle;

    a drive mechanism coupled to the mirror for moving the mirror in response to a control signal;

    a first ultrasonic transducer arranged on a centerline of the first portion of the articulated vehicle and oriented to sense ultrasonic signals reflected off an opposing surface of the second portion of the articulated vehicle;

    a second ultrasonic transducer arranged on the first portion of the articulated vehicle at a predetermined distance to one side the first ultrasonic transducer, wherein the second ultrasonic transducer is oriented to sense ultrasonic signals reflected off an opposing surface of the second portion of the articulated vehicle;

    a third ultrasonic transducer arranged on the first portion of the articulated vehicle at a predetermined distance to the other side of the first ultrasonic transducer, wherein the third ultrasonic transducer is oriented to sense ultrasonic signals reflected off an opposing surface of the second portion of the articulated vehicle; and

    a control circuit for generating the control signal in response to sensory output signals of the first, second and third ultrasonic transducers.

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