Broken rail position detection using ballast electrical property

Details Broken rail position detection using ballast electrical property Broken rail position detection using ballast electrical property

1996-02-27

1997-10-21

Nguyen, Vinh P.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

324693, 324705, 340686, 246121, 246 34R, G01R 2702

Patent

active

056800541

ABSTRACT:
The position of a break in at least one of a pair of rails in an electrically isolated rail segment of a railroad is carried out by measuring current across the ballast between the rails of the segment from one end of the segment when one of the rails in the segment is not broken and subsequently when the rail is broken. A position of the break can be calculated as a function of the ballast current. A linear approximation using the ratio of the ballast current when the rail is broken to the ballast current when the rail is not broken multiplied by the distance of the rail segment from the one end gives a satisfactory approximation of the location of the rail break.

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