METHOD FOR MEASURING THE LENGTH OF AN ELECTRIC CABLE THAT USES AN OPTICAL FIBRE ELEMENT AS A SENSOR

A method of measuring the length of an electric cable, includes providing an electric cable having a cable length and including a cable neutral axis, and a fibre unit longitudinally extending along the cable and including an optical fibre arranged substantially along the neutral axis, wherein the op...

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Bibliographische Detailangaben
Hauptverfasser:	KNUEPFER BERND, SARCHI DAVIDE
Format:	Patent
Sprache:	eng
Schlagworte:	MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS TESTING
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Beschreibung
Zusammenfassung:	A method of measuring the length of an electric cable, includes providing an electric cable having a cable length and including a cable neutral axis, and a fibre unit longitudinally extending along the cable and including an optical fibre arranged substantially along the neutral axis, wherein the optical fibre is mechanically coupled with the cable; injecting an optical signal into the optical fibre; detecting back-scattered light from the optical fibre responsive to the injected optical signal; analysing the detected back-scattered light as a function of time so as to determine the length of the optical fibre, and deriving the cable length from the length of the optical fibre.