Track circuit principle wheel detector

Details Track circuit principle wheel detector Track circuit principle wheel detector

B - Operations, Transporting

61

L

346/31

B61L 3/12 (2006.01) B61L 1/16 (2006.01)

Patent

CA 1154525

TRACK CIRCUIT PRINCIPLE WHEEL DETECTOR ABSTRACT OF THE DISCLOSURE Apparatus for detecting the presence and position of individual wheels or wheel-axles of railroad cars. The apparatus involves no moving parts and basically senses the presence of a car wheel by sensing a shunt current flowing through the car wheel-axle set. The apparatus or system includes a transmitter which develops a high frequency AC signal which is impressed across the rails, and a sense or pick-up coil which is sensitive to the fields produced by currents flowing up through the radius of the wheel, whereas it is substantially unaffected by fields produced by the currents flowing in the rails.

372316

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