EP 0359638 B1 19911113 - ASSEMBLING DEVICE FOR SECTIONS
Title (en)
ASSEMBLING DEVICE FOR SECTIONS
Publication
Application
Priority
FR 8811987 A 19880914
Abstract (en)
[origin: US5039220A] The invention relates to an optical fiber measuring device of the type in which variation of a measured parameter causes a difference of progression of light waves in the optical fiber. Such a device permits measurement of speed of rotation, or of current and magnetic field. The device includes an electronic device for digitally processing a signal indicative of phase shift of one light wave relative to another, the light waves propagating through a preferably monomode optical fiber in a SAGNAC ring interferometer, modulated by a phase modulator. The electronic device includes an analog-digital converter 11, a digital processing system 12 for generating a processor signal reduced to a frequency of modulation around the optical fiber, a control loop digital filter 13 for supplying a parameter indication signal, a register 14 for receiving the parameter indication signal and supplying a register signal which is a function of the measured parameter, an accumulator 15 for generating a digital feedback signal which is a function of the measured parameter, and a digital-analog converter 16 for generating an analog feedback signal for controlling the phase modulator.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
E04B 2/76 (2013.01 - EP US); E04B 2002/7468 (2013.01 - EP US)
Designated contracting state (EPC)
DE ES GB
DOCDB simple family (publication)
EP 0359638 A1 19900321; EP 0359638 B1 19911113; DE 68900435 D1 19911219; ES 2028459 T3 19920701; FR 2636381 A1 19900316; FR 2636381 B1 19901102; US 5039220 A 19910813
DOCDB simple family (application)
EP 89402456 A 19890908; DE 68900435 T 19890908; ES 89402456 T 19890908; FR 8811987 A 19880914; US 40633589 A 19890913