Optical sensor for detecting and localizing events

A system and method for a structure monitoring and locating a disturbance event is disclosed. The system includes a compact transceiver chip sending optical signals in three optical fibers that encompass the monitored structure appropriately. The system contains a sequence of loops, wherein the firs...

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Bibliographic Details
Main Authors SHPANTZER ISAAC, KAPLAN ARKADY
Format Patent
LanguageEnglish
Published 12.06.2012
Subjects
ALARM SYSTEMS
COLORIMETRY
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT
MEASURING
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
ORDER TELEGRAPHS
PHYSICS
RADIATION PYROMETRY
SIGNALLING
SIGNALLING OR CALLING SYSTEMS
TESTING
TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES
TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
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Summary:A system and method for a structure monitoring and locating a disturbance event is disclosed. The system includes a compact transceiver chip sending optical signals in three optical fibers that encompass the monitored structure appropriately. The system contains a sequence of loops, wherein the first and the second fiber forming the loop clockwise, while the third fiber is winded along the same loop counterclockwise. A set of two detectors registers the returning signals, and a time delay between those signals is calculated, which is indicative of the disturbance event location. The event location is determined with different sensitivity in different parts of the monitored structure depending on the density of fibers in these parts.
Bibliography:Application Number: US20090629579