Continuous gauging of electric traction contact wire
Master Thesis
1975
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University of Cape Town
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Abstract
In this system the electric traction overhead contact wire wear is continuously measured. A GaAs LED and lens combination produces a collimated beam of light along the pantograph pan. The beam, through which the contact wire slides, is monitored by a vertical array of phototransistors spaced at equal intervals. The number of phototransistors in shadow at any instant is proportional to the contact wire thickness. A fibre-optic data link conveys the encoded information from the pan at high tension to the locomotive at ground potential.
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Includes bibliographical references.
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Timm, A. 1975. Continuous gauging of electric traction contact wire. University of Cape Town.