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1. (WO2018182588) RAILROAD CROSSING CONTROL SYSTEM INCLUDING CONSTANT WARNING TIME DEVICE AND AXCLE COUNTER SYSTEM

Pub. No.:    WO/2018/182588    International Application No.:    PCT/US2017/024688
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Thu Mar 30 01:59:59 CEST 2017
IPC: B61L 29/18
G01R 33/00
Applicants: SIEMENS INDUSTRY, INC.
Inventors: HARP, Brian
SCHMIDT, Holger
Title: RAILROAD CROSSING CONTROL SYSTEM INCLUDING CONSTANT WARNING TIME DEVICE AND AXCLE COUNTER SYSTEM
Abstract:
A railroad crossing control system (100) includes a constant warning time device (40) with a control unit (50) configured to produce multiple signals, and a wheel sensing system (120) comprising at least one sensor (122) connected to a rail (20a, 20b) of a railroad track (20) at a predetermined position (P), wherein the wheel sensing system (120) detects a presence of railroad vehicle travelling on the railroad track (20) such that the at least one sensor (122) detects wheels of the railroad vehicle using electromagnetic fields, wherein the wheel sensing system (120) provides speed values of the railroad vehicle to the constant warning time device (40), and wherein the constant warning time device (40) produces a constant warning time signal for controlling a railroad crossing warning device in response to receiving the speed values of the wheel sensing system (120).