发明名称 Fibre Optic Sensor Method and Apparatus
摘要 This invention uses an interferometric fibre optic sensor, particularly a Sagnac or Michelson interferometer, in a first fibre to monitor a sensing length of the first fibre and to detect disturbances. Signals indicating disturbances are classified as being of interest or not of interest, depending on predetermined criteria. Disturbances of interest can be, for example, the breaking of reinforcement wires in concrete pipe, the breaking of wires in suspension cables, a fire, a pipeline leak, or an intrusion. A location sensor system is used to determine the location of disturbances of interest, and to confirm the interferometer signal to reduce noise. The location sensor system is a fibre optic sensor, such as a phase OTDR sensor or a Brillouin effect sensor, which can detect the location of events it senses. It is present either in the first fibre or in a separate fibre laid adjacent the first fibre along its sensing length, as for example in the same optical cable.
申请公布号 US2007247631(A1) 申请公布日期 2007.10.25
申请号 US20050569419 申请日期 2005.05.24
申请人 PAULSON PETER O 发明人 PAULSON PETER O.
分类号 G01B9/02;G01M3/04;G01M3/38;G01M11/08;G01P13/00;G08B13/186 主分类号 G01B9/02
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