公开(公告)号：US20200039550A1

公开(公告)日：2020-02-06

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

IPC: B61L29/24 ,  B61L29/30

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.

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.