Railroad car wheel detector

Details Railroad car wheel detector Railroad car wheel detector

1981-01-14

1983-04-05

Chin, Gary

Boots, shoes, and leggings

246249, B61L 1304

Patent

active

043793304

ABSTRACT:
A method is provided for determining whether an output signal from a magnetic railway wheel detector is produced by the actual passage of a wheel over the transducer. The output signal is compared with an amplitude threshold value and the time period between the zero crossing point and the time at which the signal attains amplitude threshold is compared with a time threshold level. The thresholds are set as a function of the speed of the train. Unless the thresholds are exceeded the output signal is disregarded.

REFERENCES:
patent: 3151827 (1964-10-01), Gallagher et al.
patent: 3721821 (1973-03-01), Blanyer
patent: 3964703 (1976-06-01), Wilkas et al.
patent: 4040001 (1977-08-01), Vivet et al.
patent: 4155526 (1979-05-01), Noble
patent: 4169232 (1979-09-01), Henrich
patent: 4274611 (1981-06-01), Salmon

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