Track identification system

• US 7,729,819 B2
• Filed: 09/10/2004
• Issued: 06/01/2010
• Est. Priority Date: 08/05/2004
• Status: Expired due to Fees

• Current Assignee: Konkan Railway Corp. Ltd. (Government of India)
• Original Assignee: Konkan Railway Corp. Ltd. (Government of India)
• Inventors: Rajaram, Bojji
• Primary Examiner(s): To; Tuan C
• Application Number:
  US10/939,056
• Publication Number:
  US 20060030978A1
• Time in Patent Office: 2,090 Days
• Field of Search: 701/19, 701/213, 701/301, 246/1.C, 246/26, 246/98, 246/162, 246/176, 246/220, 246/226, 246/239, 246/415.R, 246/476, 246/182.AA, 246/182.AB, 104/130.01
• US Class Current: 701/19
• CPC Class Codes: B61L 2205/04 Satellite based navigation systems, e.g. global positioning system [GPS]
• CPC Class Codes: B61L 25/021 Measuring and recording of train speed
• CPC Class Codes: B61L 25/025 Absolute localisation, e.g. providing geodetic coordinates

Abstract

A track identification system for a plurality of locomotives moving on defined plurality of tracks of a railway network wherein the system consists of on board computers with track data and identifiable switching locations data and the parameters of movement of the locomotives along the said tracks, the computers receiving reference location signals of the locomotive from a global positioning system and different geographical locations of the locomotives and digitally map the determined geographical locations on the stored route and track data, the computers continuously monitoring the movement of the locomotives with reference to specific parameters to compute the angular velocity change profile to determine switching actions at the said switching locations and generate signals relative to the angular change profile relating to switching actions at the switching locations to determine the tracks on which the movement of each of the locomotives is occurring and the velocity of such movement.

Claims

1. A track identification system for a plurality of locomotives moving on a defined plurality of tracks, said tracks having uniquely identifiable switching locations wherein said locomotives can switch movement from one track to movement on to one or more other tracks, said tracks passing through a railway network comprising locomotives, stationary structures, and crossing yards, said system comprising on board computers fitted to each of the locomotives, said on board computers having storage means to eraseably storing digitally encoded information of at least a portion of the route and track data relating to said plurality of tracks, each of said uniquely identifiable switching locations, and the parameters of movement of the locomotives along said tracks, said on board computers having processors programmed to receive reference location signals of the locomotive from a global positioning system and thereby determine the precise geographical locations of the locomotives, said on board computers being further programmed to digitally map at least a portion of the determined geographical locations of the locomotives on the stored route and track data, and to continuously monitor the movement of the locomotives with reference to parameters at their switching locations, coordinates, velocity and angular change profile at said switching location,

the system further comprising:

programming means that determine the angular change of the locomotive including during a time when the locomotive is switching from one track to another track at said switching locations based on said reference location signals and compare the determined angular changes on a continuous basis to derive an angular change profile in order to determine switching actions at the said switching locations and

programmed signal generator means operable by said programming means to generate signals relative to the derived angular change profile relating to switching actions at the switching locations thereby determining the tracks on which the movement of each of the locomotives is occurring and the velocity of such movement.

2. A track identification system as claimed in claim 1, wherein the programming means includes means to determine a first difference angular change coupled with a second difference angular change to determine switching actions at said switching locations.

3. A track identification system as claimed in claim 1, wherein the system includes GPS antennas for receiving reference location signals from a GPS satellite said antennas cooperating with the on board computers.

4. A track identification system as claimed in claim 1, wherein the on board computers are powered through power sources independent of the power sources of the locomotives.

5. A track identification system as claimed in claim 1, wherein the on board computers have display means in which the determined track and the velocity of locomotive is displayed.

6. A track identification system as claimed in claim 1, wherein the on board computers are equipped with data storage means for storing the track changes at the switching locations.

7. A track identification system as claimed in claim 1, wherein the system includes transmitting means for transmitting the track changes to other locomotives and to stationary structures associated with railway network.