Title:
光ケーブルを利用した鉄道制御システム
Document Type and Number:
Japanese Patent JP6842929
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a railway control system which can detect a position of a train without using a track circuit without causing a great cost increase, and has high resistance against electromagnetic noise.SOLUTION: A railroad crossing control system includes an optical cable (11) laid along a railway track (12), light detection means (21) which detects scattered light in a light source that is connected to the optical cable and emits a laser beam to a core of the optical cable, and in the core, a frequency analysis part (22) which frequency-analyzes an optical signal detected by a photodetector, and control means (30) which detects presence of an object based on a signal from the frequency analysis part, where the optical cable is disposed in a region intended to detect presence of the object in the railway track so that a multiple loop surrounding the object is formed.SELECTED DRAWING: Figure 1
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Inventors:
Kazuto Fukuda
Kitamura Tomo
Satoshi Itotani
Takanori Abe
Toshihito Aman
Kitamura Tomo
Satoshi Itotani
Takanori Abe
Toshihito Aman
Application Number:
JP2017005521A
Publication Date:
March 17, 2021
Filing Date:
January 17, 2017
Export Citation:
Assignee:
East Japan Railway Company
International Classes:
B61L25/02; B61L19/06
Foreign References:
| WO2013114135A2 | ||||
| US20120230629 |
Attorney, Agent or Firm:
Gwangyang International Patent Office