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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：US10988151B2
公开(公告)日：2021-04-27
申请号：US16055727
申请日：2018-08-06
Applicant: ALSTOM TRANSPORT TECHNOLOGIES
Inventor： John Hounschell , Jeffrey Fries , James Frisbie , Tony Spagnolia , Brian Isaacson
Abstract: A system controls a level crossing of a railway track installation. The railway track installation includes at least one track. The system includes at least two magnetometers associated with the at least one track and placed at corners of a crossing area between the at least one track and a road. The system also includes a level crossing control unit configured for receiving data from the magnetometers. Each magnetometer is arranged to detect a respective magnetic field vector of the earth's magnetic field and to send data representative of the magnetic field vector to the control unit. The control unit is configured to elaborate the data to detect changes in the magnetic field vectors due to the presence of a train in the crossing area and to control the level crossing as a function of the detected changes.
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公开(公告)号：US10479381B2
公开(公告)日：2019-11-19
申请号：US15466071
申请日：2017-03-22
Applicant: ALSTOM TRANSPORT TECHNOLOGIES
Inventor： Jeffrey Fries , William Shields
Abstract: A system for controlling a level crossing comprising one or more transceivers located in proximity of a level crossing area on a first side of a railway track; one or more corresponding passive reflective targets located in proximity of the level crossing area on a second side opposite to the first side where each transceiver is located; a control unit connected to each transceiver; wherein each target receives RF signals coming from each transceiver and sends back corresponding reflected signals; each transceiver is arranged to elaborate said reflected signals so as to calculate predetermined parameters values; the control unit acquires said parameters values from each transceiver and elaborates them so as to detect the presence of a train in an area around the level crossing area and, in case of presence of said train, to send a warning message and/or close bars of the level crossing.
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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
6.发明授权公开(公告)号：US10562555B2
公开(公告)日：2020-02-18
申请号：US15466134
申请日：2017-03-22
Applicant: ALSTOM TRANSPORT TECHNOLOGIES
Inventor： Jeffrey Fries , Chris Schuchmann , William Shields
Abstract: Controlling a level crossing of a railway track by providing a train having an onboard processor communicating with a wayside processor associated to a level crossing, said train having a forward end and a rear end; moving the train forward along the railway track lowering down gates of the level crossing when train is at a predetermined distance upon detection of the train approaching the level crossing; when the forward end passes over a first reference point defining the beginning of an island area of the level crossing, sending a first message from the onboard safety processor towards the wayside processor informing that the train is approaching the level crossing; maintaining down gates; when the rear end passes over a second reference point defining the end of the island area, sending a second message from the onboard safety processor to the wayside processor informing that the train has left the level crossing; and lifting the gates.
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公开(公告)号：US10427700B2
公开(公告)日：2019-10-01
申请号：US15452114
申请日：2017-03-07
Applicant: ALSTOM TRANSPORT TECHNOLOGIES
Inventor： Nicholas Nagrodsky , Jeffrey Fries
Abstract: A railroad track circuit determines occupancy status of a portion of a railroad track, and includes: a track including first and second rails; a transmitter including first and second connection terminals to generate a voltage between connection terminals; and first and second receiver units, each including first and second measurement terminals, the first and second receiver units measuring voltage between first and second measurement terminals. The output connection terminals of the transmitter connect to the respective rails at a first connection location, using first and second cables. The first measurement terminal of the first receiver unit is connected to the first rail at a second connection location, using a third cable and the first measurement terminal of the second receiver unit is connected to the first rail at a third location, using a fourth cable, the second and third locations forming respectively first and second boundaries of the track circuit.
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公开(公告)号：US09622311B1
公开(公告)日：2017-04-11
申请号：US15093601
申请日：2016-04-07
Applicant: ALSTOM TRANSPORT TECHNOLOGIES
Inventor： Jeffrey Fries , Brian Tiemann , Charles Crawford
IPC: H05B33/08 , F21V23/00 , F21V14/08 , F21S8/00 , B61L9/04 , F21Y113/13 , F21Y115/10 , F21W131/10
CPC classification number: H05B33/0806 , B61L5/1827 , B61L5/1881 , B61L2207/02
Abstract: The invention relates to a sub-assembly for a searchlight signal comprising three distinct light emitting diodes and an interface module for connecting the three diodes to a controller.The interface module comprises:a light input adapted to receive a signal for feeding a light emitting diode,a first relay having an active position and an inactive position, anda second relay having an active position and an inactive position,such that:when the second relay and the first relay are in the inactive position, the light input is fed to a first LED,when the first relay is in the active position, the light input is fed to a second LED, andwhen the second relay is in the active position, the light input is fed to a third LED.
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公开(公告)号：US11912322B2
公开(公告)日：2024-02-27
申请号：US17123055
申请日：2020-12-15
Applicant: ALSTOM Transport Technologies
Inventor： John Ross , Jeffrey Fries
CPC classification number: B61L29/30 , B61L15/009 , B61L15/0072 , B61L29/32
Abstract: Estimating electrical parameters of a track circuit including a transmitter, a receiver, and a track section between the transmitter and receiver. The transmitter outputs, over the track section towards the receiver, a signal including a data packet part, and the signal received by the receiver is decoded to determine the data packet received. Simulated signals are generated, via a predetermined software model including parameters of the track circuit, by varying an actual value input for the model parameters, each signal generated corresponding to actual values input for the parameters. Each simulated signal is compared with the signal received at a receiver until finding a part of a simulated signal that matches a corresponding part of the signal received at a receiver. The actual parameter values corresponding to the simulated signal that match the signal received at the receiver are estimated as the actual parameters of the track circuit.
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公开(公告)号：US11702119B2
公开(公告)日：2023-07-18
申请号：US17316361
申请日：2021-05-10
Applicant: ALSTOM Transport Technologies
Inventor： Jeffrey Fries , Chris Schuchmann , Richard Lawson , Shawn Clark , John Ross
CPC classification number: B61L25/06 , G01N27/041 , G01V3/02
Abstract: A method is for determining a status of a track section of a railroad. Each end of the track section is connected to a respective detector. One of the two detectors transmits a current along the rails of the track section towards the other detector and receives a current transmitted along the rails of the track section from the other detector. The track section is further equipped with a computer in communication with the two detectors. The computer calculates an instant value of the status of the track section as a function of an instant vector based on a measure of an intensity of the current transmitted by a first of the detectors as measured by the first detector (Txl1), a measure of an intensity of the current received by the first detector as measured by the first detector (Rxl1) and a measure of an intensity of the current transmitted by the second detector as measured by the second detector (Txl2).
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