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

IPC: B60W60/00 ,  B61L29/30 ,  B61L15/00 ,  B61L29/32

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.

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

IPC: B61L25/06 ,  G01V3/02 ,  G01N27/04

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).

公开(公告)号：US11352033B2

公开(公告)日：2022-06-07

申请号：US16686533

申请日：2019-11-18

Applicant: ALSTOM Transport Technologies

Inventor： John Ross ,  Jeffrey Fries

IPC: B61L1/18 ,  B61L15/00 ,  H04B3/60 ,  H04L12/40

Abstract: Method and system for communicating data between a transmitter and a receiver via a physical transmission medium interposed there between, wherein the transmitter outputs over the transmission medium towards the receiver, a predefined precursor signal followed by a target signal carrying data packet. Based on the precursor signal received at the receiver, estimated values of actual electrical parameters of the physical transmission medium are computed via a predetermined model of the physical transmission medium, wherein the computed estimated values of the electrical parameters are indicative of a distortion caused by the physical transmission medium on the predefined precursor signal outputted by the transmitter. The data packets originally outputted by the transmitter are estimated based on the computed estimated values of the actual electrical parameters and on the target signal received at the receiver.

公开(公告)号：US11643122B2

公开(公告)日：2023-05-09

申请号：US16719482

申请日：2019-12-18

Applicant: ALSTOM Transport Technologies

Inventor： Maximo Salinas ,  Jeffrey Fries ,  John Ross ,  Shawn Clark ,  Phillip Martin

IPC: B61L27/70 ,  H04B1/02 ,  H04L67/12

CPC classification number: B61L27/70 ,  H04B1/02 ,  H04L67/12

Abstract: A wayside to railway vehicle communication method including providing a first wayside device with a transmitter device capable of transmitting a data packet message to a railway vehicle travelling along a section of a railway track, through an electric waveform put into a rail of the section, and sending at least one message from the transmitter device to the railway vehicle, wherein the at least one message corresponds to the conversion of the data packet into a modulated electric waveform, the data packet including several data bits providing information relative to a plurality of speed limits the railway vehicle has to respect while travelling along respective portions of the section.

公开(公告)号：US20220185351A1

公开(公告)日：2022-06-16

申请号：US17123055

申请日：2020-12-15

Applicant: ALSTOM Transport Technologies

Inventor： John Ross ,  Jeffrey Fries

IPC: B61L29/30 ,  B61L29/32 ,  B61L15/00

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.