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公开(公告)号：US11186304B2
公开(公告)日：2021-11-30
申请号：US16027630
申请日：2018-07-05
Inventor： Nenad Mijatovic , Adrian Manoj Peter , Kaylen Jamal Bryan , Charlie Jinshaw Tian , Christina Mariah Coley
Abstract: Method for detecting rail switches degradation and failures, the method having the steps of applying a Discrete Wavelet Transform to stored measurement data relative to a switch move to be analysed and obtaining a feature vector associated with said switch move and including Discrete Wavelet Transform coefficients delivered by the applied Discrete Wavelet Transform; comparing the obtained feature vector with feature vectors associated with rail switch moves previously obtained and associating each to a respective health class among several given health classes; and determining a health class for the said switch move to be analyzed by selecting one of the health classes associated with the previously obtained feature vectors based upon the comparison step.
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公开(公告)号：US11577763B2
公开(公告)日：2023-02-14
申请号：US16811244
申请日：2020-03-06
Applicant: ALSTOM Transport Technologies
Inventor： Nenad Mijatovic , Jeffrey Fries , Jesse Herlocker
Abstract: Disclosed is a method for determining the relationship between a track-circuit current signal and a railway vehicle location, including: sending, by a track circuit, current signal across a railway track block; measuring the current signal for different railway vehicles running successively on the railway track block; aligning the measured current signals and calculating a reference curve as the average value of all the aligned curves by using a Dynamic Time Warping algorithm, this reference curve representing the relationship between the track-circuit current signal and the railway vehicle location on the railway track block.
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Patent Agency Ranking
公开(公告)号：US11260888B2
公开(公告)日：2022-03-01
申请号：US16193444
申请日：2018-11-16
Applicant: ALSTOM Transport Technologies
Inventor： Song Qin , Nenad Mijatovic , Jeffrey Fries
Abstract: A method and system for health assessment of a track circuit and/or of a track section, the track circuit being configured for detecting the presence of a vehicle on the track section between a transmitting end and a receiving end of the track circuit. The method, implemented by an electronic device, comprises obtaining, from a sensor device placed near the receiving end, samples of an electrical parameter of an electric signal transmitted between the transmitting end and the receiving end of the track section, forming a temporal series of received samples, applying an automatic clustering algorithm to separate the received samples in a predetermined number of clusters, selecting one of the clusters and determining, for the selected cluster, a first peak value of the received samples classified within the selected cluster, and calculating a track circuit health indicator depending on the first peak value determined for the selected cluster.
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公开(公告)号：US11148690B2
公开(公告)日：2021-10-19
申请号：US16367936
申请日：2019-03-28
Applicant: ALSTOM Transport Technologies
Inventor： Jeffrey Fries , Nenad Mijatovic
Abstract: Method, system and software code for calibrating a rail track circuit comprising a plurality of rails coupled to form a track section having a predefined length, a transmit processing unit coupled to the track section at a first end of the track section, and a receive processing unit coupled at the second end of the track section. A transfer function between a transmit voltage applied by the transmit processing unit at the track section and a resulting receive current detected at the receive processing unit is first determined and then applied to the rail track circuit for automatic initial calibration or recalibration.
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公开(公告)号：US11780482B2
公开(公告)日：2023-10-10
申请号：US17175996
申请日：2021-02-15
Applicant: ALSTOM Transport Technologies
Inventor： Nenad Mijatovic , Jeffrey Fries , Jesse Herlocker , Saleheh Seif , Keval Doshi
CPC classification number: B61L25/02 , B61L1/182 , B61L1/185 , B61L25/025
Abstract: Method for determining the relationship between a track-circuit current signal and a railway vehicle location, including sending, by a track circuit, a current signal across a railway track block, measuring the current signal for different railway vehicles running successively on the railway track block, thus obtaining a plurality of railway vehicle move samples, normalizing the railway vehicle move samples, initializing a reference curve, and applying a Weighted Dynamic Time Warping Barycenter Averaging algorithm to calculate a final reference curve representing the relationship between the measured track-circuit current signal and the railway vehicle location on the railway track block.
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公开(公告)号：US20220258781A1
公开(公告)日：2022-08-18
申请号：US17175996
申请日：2021-02-15
Applicant: ALSTOM Transport Technologies
Inventor： Nenad Mijatovic , Jeffrey Fries , Jesse Herlocker , Saleheh Seif , Keval Doshi
IPC: B61L25/02
Abstract: Method for determining the relationship between a track-circuit current signal and a railway vehicle location, including sending, by a track circuit, a current signal across a railway track block, measuring the current signal for different railway vehicles running successively on the railway track block, thus obtaining a plurality of railway vehicle move samples, normalizing the railway vehicle move samples, initializing a reference curve, and applying a Weighted Dynamic Time Warping Barycenter Averaging algorithm to calculate a final reference curve representing the relationship between the measured track-circuit current signal and the railway vehicle location on the railway track block.
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公开(公告)号：US20200156674A1
公开(公告)日：2020-05-21
申请号：US16193444
申请日：2018-11-16
Applicant: ALSTOM Transport Technologies
Inventor： Song Qin , Nenad Mijatovic , Jeffrey Fries
Abstract: A method and system for health assessment of a track circuit and/or of a track section, the track circuit being configured for detecting the presence of a vehicle on the track section between a transmitting end and a receiving end of the track circuit. The method, implemented by an electronic device, comprises obtaining, from a sensor device placed near the receiving end, samples of an electrical parameter of an electric signal transmitted between the transmitting end and the receiving end of the track section, forming a temporal series of received samples, applying an automatic clustering algorithm to separate the received samples in a predetermined number of clusters, selecting one of the clusters and determining, for the selected cluster, a first peak value of the received samples classified within the selected cluster, and calculating a track circuit health indicator depending on the first peak value determined for the selected cluster.
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