Microwave measurement of train wheel wear

Details Microwave measurement of train wheel wear Microwave measurement of train wheel wear

1994-09-15

1996-11-26

Morano, S. Joseph

Railway switches and signals

Cab signal or train control

Train defect

73146, 33 1Q, B61L 2300

Patent

active

055776906

ABSTRACT:
A method and apparatus for measuring circumferential characteristics of train wheels for potential indication of train wheel wear that includes at least one microwave transceiver disposed adjacent to a section of train track and oriented to transmit microwave energy toward and receive microwave energy reflected from a radially oriented surface of a train wheel that traverses the track section. Wheels are rolled along the track section in sequence while the transceiver is energized so as to transmit energy toward the wheel and develop a varying interference pattern of peaks (alternating minima and maxima) caused by reflection from the radially oriented surface of the wheel. The transceiver provides an electrical signal that varies as a function of such interference pattern, and one or more desired radial characteristics of the wheel are determined as a function of such signal.

REFERENCES:
patent: 2605392 (1952-07-01), Gieskieng
patent: 3648164 (1972-03-01), Searle et al.
patent: 4696446 (1987-09-01), Mochizuki et al.
patent: 5421197 (1995-06-01), Ohms

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