G - Physics – 08 – B
Patent
G - Physics
08
B
340/155.2, 340/1
G08B 21/00 (2006.01) B61K 9/06 (2006.01)
Patent
CA 1165837
RAILROAD CAR WHEEL BEARING HEAT SIGNAL PROCESSING CIRCUIT ABSTRACT OF THE DISCLOSURE An improved method and circuit is provided for processing waveforms from a railway car heat signal to eliminate spurious signals and to differentiate between roller bearings and friction bearings in a railroad hot box detector system. The waveforms generated by passing bearings are discretely sampled and spurious signals are eliminated by considering only those signals that fall within the crossing points of a threshold value. Discrimination between roller bearings and friction bearings is obtained by determining the ratio of the sum of the discrete values of the amplitude of the waveform within a first set of samples between the crossing points to the sum of the discrete values of the amplitude of the waveform within a second set of samples between the crossing points.
373105
Bambara Joseph E.
Sanville W. Woodward
Marks & Clerk
Servo Corporation Of America
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