Method for calibrating beam emitter type speed sensor for railro

Details Method for calibrating beam emitter type speed sensor for railro Method for calibrating beam emitter type speed sensor for railro

1980-05-23

1982-10-05

Hubler, Malcolm F.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

73507, 246182C, G01S 740, G01P 300, B61B 1300

Patent

active

043530680

ABSTRACT:
A beam emitter type speed sensor for railroad rolling stock is calibrated by positioning an endless belt between rails of the track for the railroad rolling stock. The endless belt has a speed which is controllable. The endless belt is so positioned so that the railroad rolling stock can maneuver the speed sensor in proximity thereover having an antenna-to-belt distance comparable to the antenna-to-roadbed distance. A method of calibrating the indicator in the cab includes rotating the belt at a known speed.

REFERENCES:
patent: 3160463 (1964-12-01), Moscarini
patent: 3564488 (1971-02-01), Higashi et al.
patent: 3787866 (1974-01-01), Gamertsfelder et al.
"Automatic Regulation of Train Speed"; The Railway Gazette, Mar. 5, 1965; pp. 184, 185, 186 and 189.

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