公开(公告)号：US20220355841A1

公开(公告)日：2022-11-10

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 ,  G01N27/04 ,  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：US20180093684A1

公开(公告)日：2018-04-05

申请号：US15281621

申请日：2016-09-30

Applicant: ALSTOM TRANSPORT TECHNOLOGIES

Inventor： Nicholas NAGRODSKY ,  Richard LAWSON ,  Jeffrey FRIES ,  John HOUNSCHELL ,  James KISS

IPC: B61L7/06 ,  B61L5/06 ,  H04B3/54

CPC classification number: B61L7/06 ,  B61L1/188 ,  B61L5/06 ,  B61L23/044 ,  B61L27/0005 ,  H04B3/542

Abstract: A wayside communication system for transmitting coded current signals through running rails of a railroad track between wayside control devices. A power line common to the wayside control devices is used as the return path for the current signals. The system features train and broken rail detection. The system allows sending signals long distances since rail to rail current leakage is no longer an issue.