Train integrity detection system

Details Train integrity detection system Train integrity detection system

G - Physics

01

M

G01M 3/28 (2006.01) B60L 3/00 (2006.01) B61L 15/00 (2006.01)

Patent

CA 2160415

An improvement in an End-of-Train (EOT) monitor system allows the continuity of the brake pipe of a train to be verified. Obstructions in the brake-pipe, such as, for example, closed angle cocks, kinks, blockages or breaks, adversely affect brake safety. A pressure sensor is installed in the Locomotive Cab Unit (LCU) to sense brake application. If the brake pipe is intact, a brake application initiated from the locomotive should correspondingly result in a drop in pressure at the EOT unit. The time require for the drop to propagate through the train is a function of train length. If a pressure drop is not sensed at the EOT unit within a predetermined period of time, it is assumed to be due to either a corrupted brake pipe or a communications failure between the LCU and EOT unit. A Microprocessor in the LCU initiates a communications check by interrogating the EOT unit from the LCU. If no reply is received, an alarm sounds warning the engineer of a communications failure. If, on the other hand, the LCU receives a reply from the EOT to the interrogation, a brake pipe continuity alarm is sounded warning the engineer of a brake fault condition.

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