公开(公告)号：US20170282946A1

公开(公告)日：2017-10-05

申请号：US15475710

申请日：2017-03-31

Applicant: ALSTOM TRANSPORT TECHNOLOGIES

Inventor： Alfonso Matias LOZANO-OVEJERO ,  Oscar MARTIN-BLASCO

IPC: B61L29/30 ,  B61L7/08 ,  B61L23/14 ,  B61L25/02 ,  B61L7/06

Abstract: A method for commanding a railway level crossing protection system comprising: a) activating a railway signal preventing a train from driving beyond a level crossing; b) detecting an incoming train approaching the level crossing and measuring a speed of said incoming train; c) calculating a waiting time, as a function of the train's measured speed; d) waiting until expiration of the calculated waiting time and, once said waiting time expires, sending an order to commute the protection system into the protected state; and e) querying the state of the protection system and if said protection system is found to have commuted into the protected state, deactivating said railway signal, and maintaining said railway signal in the activated state otherwise.