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    • 1. 发明申请
    • FIBRE OPTIC CABLE FOR ACOUSTIC/SEISMIC SENSING
    • 用于声/光检测的光纤电缆
    • WO2014064460A3
    • 2014-06-12
    • PCT/GB2013052795
    • 2013-10-25
    • OPTASENSE HOLDINGS LTD
    • CRICKMORE ROGERHILL DAVID
    • G01H9/00G01D5/353G01L1/24G01V1/20G01V1/22
    • G01H9/004G01D5/35358G01L1/242G01V1/208G01V1/226
    • This application relates to fibre optic cable structures that are suitable for distributed acoustic sensing, and which may usefully be used for seismic monitoring/detection. The cable structures provide good sensitivity may further exhibit a directional sensitivity and thus can be used to discriminate between stimuli acting on the cable in different directions. One such fibre optic cable comprises a core structure (202, 203, 204) with an optical fibre wound around the periphery of the core structure. The core comprises a mass(203)which is moveable in a preferred direction within the cable such that movement of said mass in said preferred direction causes a change in length of the fibre wound around the periphery of the core.
    • 本申请涉及适用于分布式声学传感的光纤光缆结构,并且其可以有用地用于地震监测/检测。 提供良好灵敏度的电缆结构可以进一步表现出方向灵敏度,并且因此可以用于区分在不同方向上作用在电缆上的刺激。 一种这样的光缆包括具有围绕芯结构的外围缠绕的光纤的芯结构(202,203,204)。 所述芯包括质量块(203),所述质量块(203)能够在所述电缆内的优选方向上移动,使得所述质量块在所述优选方向上的移动引起缠绕在所述芯的外围周围的所述纤维的长度的变化。