DEVICE, METHOD, AND PROGRAM FOR INSPECTING UNDERWATER CABLE

To provide an inspection technique for an underwater cable with which no inspection portion is lost when a device is swept away by a tidal wave and an inspection position can be specified.SOLUTION: An inspection device 10 includes: an unmanned submarine vehicle 15; a clamp meter 11 that clamps to an...

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Bibliographische Detailangaben
Hauptverfasser:	SUGANUMA NAOTAKA, YAMAGUCHI HIDEAKI, MATSUZAKI KENJI, UEDA KOJI, TANIYAMA YOSHIHIRO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	BLASTING CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY EQUIPMENT FOR DWELLING OR WORKING UNDER WATER EQUIPMENT FOR SHIPPING GENERATION HEATING INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINEDOPTICAL AND ELECTRIC CABLES OR LINES LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS LIFE-SAVING IN WATER LIGHTING MACHINES OR ENGINES FOR LIQUIDS MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES MECHANICAL ENGINEERING OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS PHYSICS PRODUCING MECHANICAL POWER RELATED EQUIPMENT SHIPS OR OTHER WATERBORNE VESSELS TESTING TRANSPORTING WEAPONS WIND MOTORS WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS
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Beschreibung
Zusammenfassung:	To provide an inspection technique for an underwater cable with which no inspection portion is lost when a device is swept away by a tidal wave and an inspection position can be specified.SOLUTION: An inspection device 10 includes: an unmanned submarine vehicle 15; a clamp meter 11 that clamps to an underwater cable 31 to acquire a current flowing in the underwater cable 31 as a detection waveform; an arithmetic unit for calculating a phase difference between the detected waveform of the clamp meter 11 and a reference waveform; and a position specifying unit 48 for specifying an inspection position in the underwater cable 31 based on the phase difference.SELECTED DRAWING: Figure 2 【課題】装置が潮流に流されて点検箇所を見失うことがなく、さらに点検位置の特定が可能な、水中ケーブルの点検技術を提供する。【解決手段】点検装置１０は、無人潜水機１５と、水中ケーブル３１にクランプしこの水中ケーブル３１に流れる電流を検出波形として取得するクランプメータ１１と、クランプメータ１１の検出波形と基準波形との位相差を演算する演算部と、この位相差に基づいて水中ケーブル３１における点検位置を特定する位置特定部４８と、を備えている。【選択図】図２