Rail and train monitoring system and method
First Claim
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1. A method for determining at least one parameter related to a train traversing on a railway track, the method comprising:
- (a) sensing high frequency acoustic signals at a detection location on the railway track;
(b) obtaining a high frequency spectrum of the high frequency acoustic signals;
(c) obtaining a temporal progression of the high frequency spectrum; and
analyzing the temporal progression to detect an approach of the train towards the detection location on the railway track.
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Abstract
A system and method for determining at least one parameter related to a train traversing on a railway track is provided. The system comprises a sensor coupled to a detection location and configured for sensing acoustic signals at the detection location on the railway track and a processor coupled to the sensor and configured for analyzing a temporal progression of a frequency spectrum corresponding to the acoustic signals
63 Citations
40 Claims
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1. A method for determining at least one parameter related to a train traversing on a railway track, the method comprising:
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(a) sensing high frequency acoustic signals at a detection location on the railway track;
(b) obtaining a high frequency spectrum of the high frequency acoustic signals;
(c) obtaining a temporal progression of the high frequency spectrum; and
analyzing the temporal progression to detect an approach of the train towards the detection location on the railway track. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A system for determining it least one parameter related to a train traversing on a railway track, the system comprising:
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(a) a sensor coupled to a detection location and configured for sensing high frequency acoustic signals at the detection location on the railway track; and
(b) a processor coupled to the sensor and configured for obtaining a high frequency spectrum of the high frequency acoustic signals, obtaining a temporal progression of the high frequency spectrum, and analyzing the temporal progression to detect an approach of the train towards the detection location on the railway track. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A system to determine at least one parameter related to a train characteristic, the system comprising:
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a sensor configured for detecting low frequency acoustic signals at a detection location on a railway track, as the train is traversing over the detection location on the railway track, and a processor configured for obtaining a low frequency spectrum of low frequency acoustic signals, obtaining a temporal progression of the low frequency spectrum, and analyzing the temporal progression to determine at least one parameter related to the train characteristic. - View Dependent Claims (30)
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31. A method for determining a position of a rail break, the method comprising:
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analyzing acoustic signals propagated by a train while traversing over the railway track to determine a speed of the train;
detecting a rail break on the railway track at a time of detection. determining a difference between the time of detection and a time of train passage over a detection location. - View Dependent Claims (32, 33, 34)
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35. A system to determine at least one parameter related to train traveling on a railway track, the system comprising:
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a sensor configured for detecting broadband acoustic signals at a detection location on the railway track; and
a processor configured for obtaining a broadband frequency spectrum of the broadband acoustic signals, obtaining a temporal progression of the broadband frequency spectrum, and analyzing the temporal progression to determine at least one parameter related to a train characteristic. - View Dependent Claims (36, 37, 38, 39, 40)
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Specification