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：US20180273068A1

公开(公告)日：2018-09-27

申请号：US15466134

申请日：2017-03-22

Applicant: ALSTOM TRANSPORT TECHNOLOGIES

Inventor： Jeffrey FRIES ,  Chris SCHUCHMANN ,  William SHIELDS

IPC: B61L29/22 ,  B61L23/00

CPC classification number: B61L29/22 ,  B61L23/002 ,  B61L29/32

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.