Wheel profile inspection apparatus and method
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United States of America Patent
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Jun 21, 2005
Grant Date -
May 20, 2004
app pub date -
Nov 18, 2002
filing date -
Nov 18, 2002
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method and system for measuring railroad wheels, where the wheels may be measured while mounted on railcars that are in motion. The method and system may be practiced by using one or more lasers or other light sources to illuminate portions of the surface of the railroad wheels, two or more of which may be substantially mutually orthogonal. By converting images of the illuminated portions to coordinates, wheel center position and diameter can be calculated, and once center position and diameter are calculated, wheel profile parameters such as flange height, flange width, and tread hollow can be calculated. The method and system produces accurate results at speeds up to at least 60 miles per hour.
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