Back to results
US 10,752,273 B2Granted
Train direction and speed determinations using laser measurements
AssigneeSiemens Mobility GmbH
InventorNathan Clanney
Life of this patent
Estimating the term…
Abstract
System and methods for determining train direction and speed using laser measurements. The speed and direction determinations can be used to monitor, diagnose, and/or report the operational performance of a crossing warning system.
Claims22
A system comprising:
- at least one laser device adapted to provide a laser beam towards a location on a railroad track and being adapted to provide one or more outputs when the laser beam is reflected back by a train traversing the track, the one or more outputs including a train detection signal and information identifying the at least one laser device;
- and
- a control unit adapted to
- input the one or more outputs from the at least one laser device,
- time stamp and record receipt of the train detection signal and associate the train detection signal with the at least one laser device based on the information identifying the at least one laser device, and
- determine a direction and speed of the train based on the one or more outputs from the at least one laser device and timing information associated with the one or more outputs,
- wherein the control unit is further adapted to output and store determined direction and speed of the train for review or comparison to warning times determined by a cross warning system to determine whether the crossing warning system activates crossing warning devices at proper times.
4 more elements
A method comprising:
- inputting one or more outputs from at least one laser device while a train is traversing a railroad track, the one or more outputs including a train detection signal and information identifying the at least one laser device;
- time stamping and recording receipt of the train detection signal and associating the train detection signal with the at least one laser device based on the information identifying the at least one laser device;
- determining a direction and speed of the train based on the one or more outputs from the at least one laser device and timing information associated with the one or more outputs, and
- outputting and storing determined direction and speed of the train for review or comparison to warning times determined by a crossing warning system to determine whether the crossing warning system activates crossing warning devices at proper times.
1 more element
Dependencies are inferred from the claim text.