Method and apparatus for measuring data for calculating the diam

Details Method and apparatus for measuring data for calculating the diam Method and apparatus for measuring data for calculating the diam

1986-06-19

1988-06-07

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356385, G01V 904

Patent

active

047498706

ABSTRACT:
The diameter of a wheel or wheels, such as railroad wheels, is measured while the wheel rolls through a measuring station or while a measuring station is moved past a wheel. Electromagnetic beams, such as light or laser beams, provide respective barriers or sensors. The spacing between the beams is fixed and the time needed to traverse the spacing is measured. The spacing has a definite relationship to the wheel diameter. A computer calculates the diameter based on the measured time and on the given wheel diameter related spacing. Even where only a portion of a wheel is available for sensing or scanning the present method may be used.

REFERENCES:
patent: 3001438 (1961-09-01), Wharten
patent: 3897156 (1975-07-01), Chasson
patent: 4375921 (1983-03-01), Morander

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