B - Operations – Transporting – 61 – L
Patent
B - Operations, Transporting
61
L
B61L 23/04 (2006.01) B61L 1/18 (2006.01) B61L 23/22 (2006.01) B61L 25/02 (2006.01) B61K 9/00 (2006.01) B61L 13/04 (2006.01)
Patent
CA 2631329
A rail break or rail vehicle detection system (10) which includes a voltage source (20), capable of voltage source compensation, is coupled to each of a plurality of zones (30), (32), (34), (36) within a block (24) of rail track (12) devoid of insulated joints. A plurality of current sensors (38) are provided, each coupled to a respective voltage source (20) and configured to measure current flowing through the sensor (38) in response to changing voltage patterns. Each current sensor (38) is further configured in one embodiment to determine and compare signatures based on current measurements to a predetermined decision surface to detect the presence of a rail vehicle or rail break on a predetermined block (24) of track (12). The voltage source (20) or current sensor (38) can be adapted to control voltage levels and polarity of each voltage source (20). A method of communicating the presence or absence of a rail break or rail vehicle employs an in-rail TDMA communication scheme to synchronize, test and communicate directly between the sensors (38) without use of external controllers.
Andarawis Emad Andarawis
Anderson Todd Alan
Fries Jeffrey Michael
Company General Electric
Craig Wilson And Company
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