B - Operations – Transporting – 61 – L
Patent
B - Operations, Transporting
61
L
B61L 23/00 (2006.01) B61L 1/06 (2006.01) B61L 3/16 (2006.01) B61L 23/04 (2006.01) G01V 1/00 (2006.01)
Patent
CA 2270066
A highly reliable early warning system is disclosed. The warning system provides immediate detection of railway activity and early warning of dangerous railway conditions such as rockfall, to train crews and to Rail Traffic Control offices. The warning system has acoustic sensors coupled to one of the rails of a railway for detecting sound or vibration induced by physical events. The detected acoustic signals are analyzed and if above a threshold, compared to neighboring acoustic detections. If a suspect condition is identified, an alarm is generated. The alarm signal may be transmitted over any communication system to the Rail Traffic Control office and to the trains traveling toward the suspect track location. When desired, the alarm may employ wireless transmissions to stop the trains remotely. When more than one acoustic sensor detects the same event, the exact location can be determined. Physical events that are detected may be stored in a sound file. These may be catalogued as to location, time and suspected cause for retrieval and analysis later.
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