Hazard mitigation for railway track intrusions at train station platforms
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United States of America Patent
Stats
-
Jul 17, 2007
Grant Date -
Sep 22, 2005
app pub date -
Mar 7, 2005
filing date -
Mar 6, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A hazard mitigation system to detect intrusion by an object into a track zone at a train station platform. A structure is provided that includes a fixed foundation and a surface layer that is cushionably placed above the foundation, such that the structure is located in the track zone. At least one sensor is mounted between the surface layer and the foundation. This sensor senses the weight of the object upon the surface layer and provides a sensor signal representative of that weight. A control unit receives the sensor signal, processes it to determine whether the object represents a potential hazard, and, if so generates a warning signal. The sensor can particularly include a strain or pressure gage, or a fiber optic sensor. When a fiber optic sensor is employed, it can particularly include a fiber Bragg grating.
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