APPARATUS AND METHOD FOR SPECIFYING CRACK POSITION OF OPGW

PROBLEM TO BE SOLVED: To easily and properly specify a crack position of an aluminum tube of an OPGW.SOLUTION: A crack position specification apparatus includes: an optical deformation tube 2 arranged in an aluminum tube and deforms by irradiation of solar light; an FBG optical fiber 3 which is arra...

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Bibliographische Detailangaben
Hauptverfasser:	OTSUKA TAKASHI, TSUNOSHIMA KOJI, NISHIZAKI TAKAHIDE, SAKURAI HIROKI, SATOMURA SHIGEYUKI, SHIGETANI AKIRA, INOUE KATSUYOSHI, YOSHIZAKI SHUICHI, FUKUHARA SHINICHI, TERADO KATSUHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CABLES CONDUCTORS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINEDOPTICAL AND ELECTRIC CABLES OR LINES INSULATORS MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES TESTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To easily and properly specify a crack position of an aluminum tube of an OPGW.SOLUTION: A crack position specification apparatus includes: an optical deformation tube 2 arranged in an aluminum tube and deforms by irradiation of solar light; an FBG optical fiber 3 which is arranged in the optical deformation tube 2 so as to deform in accordance with deformation of the optical deformation tube 2 and in which a plurality of FBGs are arranged at a predetermined interval; and a monitoring device 4 for making predetermined light incident from a one-end part of the FBG optical fiber 3, receiving reflected light beams from respective FBGs and detecting the existence of a change in the reflected light beams.