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发明申请
US20130211726A1 DETECTING BROADSIDE AND DIRECTIONAL ACOUSTIC SIGNALS WITH A FIBER OPTICAL DISTRIBUTED ACOUSTIC SENSING (DAS) ASSEMBLY 有权
用光纤分布式声学传感（DAS）组件检测广域和方向声学信号

  • 专利标题： DETECTING BROADSIDE AND DIRECTIONAL ACOUSTIC SIGNALS WITH A FIBER OPTICAL DISTRIBUTED ACOUSTIC SENSING (DAS) ASSEMBLY
  • 专利标题（中）： 用光纤分布式声学传感（DAS）组件检测广域和方向声学信号
  • 申请号： US13518083
    申请日： 2010-12-21
  • 公开(公告)号： US20130211726A1
    公开(公告)日： 2013-08-15
  • 发明人: Jeffery Joseph Mestayer , Peter Berkeley Wills
  • 申请人： Jeffery Joseph Mestayer , Peter Berkeley Wills
  • 优先权： EP10196253.8 20101221
  • 国际申请： PCT/US10/61478 WO 20101221
  • 主分类号： G01V1/34
  • IPC分类号： G01V1/34 ;  G01H9/00
DETECTING BROADSIDE AND DIRECTIONAL ACOUSTIC SIGNALS WITH A FIBER OPTICAL DISTRIBUTED ACOUSTIC SENSING (DAS) ASSEMBLY
摘要：
A Distributed Acoustic Sensing (DAS) fiber optical assembly comprises adjacent lengths of optical fiber A, B with different directional acoustic sensitivities, for example by providing the first length of optical fiber A with a first coating 35, such as acrylate, and the second length of optical fiber B with a second coating 36, such as copper, wherein the first and second coatings 35 and 36 may be selected such that the Poisson's ratio of the first length of coated fiber A is different from the Poisson's ratio of the second length of coated fiber B. The different Poisson's ratios and/or other properties of the adjacent lengths of optical fiber A and B improve their directional acoustic sensitivity and their ability to detect broadside (radial) acoustic waves.
摘要（中）：

分布式声学传感（DAS）光纤组件包括具有不同定向声学灵敏度的相邻长度的光纤A，B，例如通过为第一长度的光纤A提供第一涂层35，例如丙烯酸酯，第二长度 的光纤B具有第二涂层36，例如铜，其中可以选择第一和第二涂层35和36，使得涂覆纤维A的第一长度的泊松比不同于第二涂层36的泊松比 光纤A和B的相邻长度的不同泊松比和/或其他特性提高了它们的定向声学灵敏度及其检测宽侧（径向）声波的能力。

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