Continuous gauging of electric traction contact wire
Includes bibliographical references. === 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...
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| Format: | Dissertation |
| Language: | English |
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University of Cape Town
2015
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| Online Access: | http://hdl.handle.net/11427/12432 |
| Summary: | Includes bibliographical references. === 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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