×

Detector for sensing motion and direction of a railway device

  • US 6,087,950 A
  • Filed: 09/01/1999
  • Issued: 07/11/2000
  • Est. Priority Date: 07/30/1997
  • Status: Expired due to Fees
First Claim
Patent Images

1. A motion detector for detecting movements of a vehicle supported on a pair of rails, said detector to be mounted on an end-of-train unit for attachment to said vehicle, said detector comprising:

  • a. a single axis accelerometer mounted at an angle from a plane formed by said pair of rails;

    b. said single axis accelerometer having a sensitivity to acceleration along an axis generally parallel to a longitudinal axis of said pair of rails;

    c. said single axis accelerometer when mounted at said angle also having a sensitivity to acceleration along an axis generally normal to said plane formed by said pair of rails;

    d. said single axis accelerometer generating a motion signal having components of acceleration corresponding to said parallel axis and said normal axis; and

    e. an analyzer receiving said components and determining therefrom a motion state and a direction, said motion state being one of stopped and moving, said direction being one of forward and reverse.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×