JOSEPH A PROFETA
Barber in Pittsburgh, PA

5332180, Jul 26, 1994

Dec 28, 1992

7/997603

Robert A. Peterson - Pittsburgh PA
Theo C. Giras - Harmanville PA
Larry C. Mackey - Unity Township, Westmoreland County PA
Daniel R. Disk - Murrysville PA
Robert G. Brown - Hillpoint WI
Barry W. Johnson - Charlottesville VA
Joseph A. Profeta - Pittsburgh PA

Union Switch & Signal Inc. - Pittsburgh PA

G08G 100

246 3

A railway traffic control system in which accurate vehicle information is effectively available in real-time to facilitate control of traffic flow. Unlike prior art methods of precisely monitoring train location, the current invention is dependant only on equipment on-board the vehicle and position updates provided by external benchmarks located along the track route. The system's dynamic motion capabilities can also be used to sense and store track rail signatures, as a function of rail distance, which can be routinely analyzed to assist in determining rail and road-bed conditions for preventative maintenance purposes. In presently preferred embodiments, the on-board vehicle information detection equipment comprises an inertial measurement unit providing dynamic vehicle motion information to a position processor. Depending on the amount and quality of apriori knowledge of the vehicle route, the inertial measurement unit may have as many as three gyroscopes and three accelerometers or as little as a single accelerometer. To minimize error between benchmarks, the processor preferably includes a recursire estimation filter to combine the apriori route information with movement attributes derived from the inertial measurement unit.

5711497, Jan 27, 1998

Dec 15, 1995

8/573463

Nikos Andrianos - Allegheny PA
Joseph Profeta - Allegheny PA
Joseph P. Elm - Butler PA
Theo C. Giras - Allegheny PA
Christopher S. Detka - Beaver PA

Union Switch & Signal Inc. - Pittsburgh PA

B60L 2100

246 34B

The invention provides for a cab signaling apparatus and method for use on board a railway vehicle propelled on a set of spaced rails by a traction motor. The cab signaling apparatus may reduce a noise component within a signal having a primary cab signal component and reduce a cab signal component within a signal having a primary noise component. The cab signaling apparatus may further include an adaptive filter to cancel the noise component within the signal having a primary cab signal component without specialized tuning of the cab signaling apparatus. The cab signaling apparatus may include a false code monitor for identifying a true cab signal code and a track signal monitor for identifying a true cab signal in the presence of noise.