Patent ID: 8520986
Filing Date: 2013-08-27
Classification: G01D,G01K,G01L

Abstract:
1. In combination with a generator of electric energy including a frame, a stator mounted stationary within said frame and a rotor mounted for rotation within said stator, said stator including a stack of laminations and ring shaped coil windings clamped in abutting engagement with each other with a plurality of threaded bolt and nut fasteners with an electrically non-conducting non-magnetic compression member positioned between each nut fastener and end of said stator, an apparatus comprising: (a) a peripheral groove disposed concentric with at least one of said plurality of bolt fasteners; (b) at least one fiber optic cable having a first portion thereof disposed within and encircling said peripheral groove and additional two portions extending in radially opposite directions external to said groove; and (c) wherein said apparatus is configured to measure at least one of Rayleigh back-scattering, Brillouin frequency shift and Raman distributive characteristics of an optical signal traveling through said at least one fiber optic cable.