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1. WO2012129625 - FIBER OPTIC MAGNETIC FORCE SENSOR, METHOD FOR MANUFACTURING SAME AND USE THEREOF

Publication Number WO/2012/129625
Publication Date 04.10.2012
International Application No. PCT/BR2012/000086
International Filing Date 29.03.2012
IPC
G01D 5/28 2006.01
GPHYSICS
01MEASURING; TESTING
DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; TRANSFERRING OR TRANSDUCING ARRANGEMENTS NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
5Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
26using optical means, i.e. using infra-red, visible or ultra-violet light
28with deflection of beams of light, e.g. for direct optical indication
G02B 6/34 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
24Coupling light guides
26Optical coupling means
34utilising prism or grating
G01B 11/16 2006.01
GPHYSICS
01MEASURING; TESTING
BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
11Measuring arrangements characterised by the use of optical means
16for measuring the deformation in a solid, e.g. optical strain gauge
CPC
G01D 5/35316
GPHYSICS
01MEASURING; TESTING
DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
5Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
26characterised by optical transfer means, i.e. using infra-red, visible, or ultra-violet light
32with attenuation or whole or partial obturation of beams of light
34the beams of light being detected by photocells
353influencing the transmission properties of an optical fibre
35306using an interferometer arrangement
35309using multiple waves interferometer
35316using a Bragg gratings
Applicants
  • FACULTADES CATÓLICAS, ASSOCIAÇÃO SEM FINS LUCRATIVOS, MANTENEDORA DA PONTIFICIA UNIVERSIDAD CATÓLICA DO RIO DE JANEIRO -PUC RIO [BR]/[BR] (AllExceptUS)
  • OLIVEIRA BRUNO, Antonio carlos [BR]/[BR] (UsOnly)
  • PACHECO, Clara Johanna [CO]/[BR] (UsOnly)
Inventors
  • OLIVEIRA BRUNO, Antonio carlos
  • PACHECO, Clara Johanna
Agents
  • ATEM E REMER ASSESSORIA E CONSULTORIA DE PROPRIEDADE INTELLETUAL LTDA.
Priority Data
PI 1101872-001.04.2011BR
Publication Language Portuguese (PT)
Filing Language Portuguese (PT)
Designated States
Title
(EN) FIBER OPTIC MAGNETIC FORCE SENSOR, METHOD FOR MANUFACTURING SAME AND USE THEREOF
(FR) CAPTEUR DE FORCE MAGNÉTIQUE À FIBRES OPTIQUES, PROCÉDÉ DE FABRICATION ET UTILISATION DE CELUI-CI
(PT) SENSOR DE FORÇA MAGNÉTICA A FIBRA ÓPTICA, PROCESSO DE FABRICAÇÃO E USO DO MESMO
Abstract
(EN)
The present invention provides a magnetic force sensor based on optical fiber Bragg gratings (FBG), and also describes the method for manufacturing same and the use thereof. The invention is advantageously used for monitoring the position, displacement, vibration and deformation of iron or steel structures, and also for monitoring corrosion in towers, structures and equipment used to generate and transmit electric energy, and in the oil and gas industries.
(FR)
La présente invention concerne un capteur de force magnétique à fibres optiques avec réseaux de Bragg (FBG), le procédé de fabrication de ce capteur et son utilisation étant également décrits. Avantageusement, l'invention trouve une application dans la surveillance de la position, du déplacement, de la vibration et de la déformation de structures constituées de fer/acier, ainsi que dans la surveillance de la corrosion dans des tours, des structures et des équipements utilisés pour produire et transmettre de l'énergie électrique, et dans l'industrie du pétrole et du gaz.
(PT)
A presente invenção proporciona um sensor de força magnética baseado em fibras óticas com redes de Bragg (FBG), sendo também descrito o processo de fabricação do mesmo e seu uso. A invenção é vantajosamente aplicada ao monitoramento da posição, deslocamento, vibração e deformação de estruturas feitas de ferro/aço, e também para monitorar corrosão em torres, estruturas e equipamentos utilizados na geração e transmissão de energia elétrica e na indústria de petróleo e gás.
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