Processing

Please wait...

Settings

Settings

Goto Application

1. WO2002021657 - FIBER OPTIC LIGHT SENSOR SYSTEM

Publication Number WO/2002/021657
Publication Date 14.03.2002
International Application No. PCT/US2001/019022
International Filing Date 13.06.2001
Chapter 2 Demand Filed 04.03.2002
IPC
F16P 3/14 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
PSAFETY DEVICES IN GENERAL
3Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
12with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine
14the means being photocells or other devices sensitive without mechanical contact
G01J 1/04 2006.01
GPHYSICS
01MEASURING; TESTING
JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
1Photometry, e.g. photographic exposure meter
02Details
04Optical or mechanical part
H02H 1/00 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
1Details of emergency protective circuit arrangements
CPC
F16P 3/144
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
PSAFETY DEVICES IN GENERAL; ; SAFETY DEVICES FOR PRESSES
3Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
12with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine
14the means being photocells or other devices sensitive without mechanical contact
144using light grids
G01J 1/0228
GPHYSICS
01MEASURING; TESTING
JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
1Photometry, e.g. photographic exposure meter
02Details
0228Control of working procedures; Failure detection; Spectral bandwidth calculation
G01J 1/04
GPHYSICS
01MEASURING; TESTING
JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
1Photometry, e.g. photographic exposure meter
02Details
04Optical or mechanical part ; supplementary adjustable parts
G01J 1/0425
GPHYSICS
01MEASURING; TESTING
JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
1Photometry, e.g. photographic exposure meter
02Details
04Optical or mechanical part ; supplementary adjustable parts
0407Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings
0425using optical fibers
H02H 1/0023
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
1Details of emergency protective circuit arrangements
0007concerning the detecting means
0015Using arc detectors
0023sensing non electrical parameters, e.g. by optical, pneumatic, thermal or sonic sensors
Applicants
  • THE JOHNS HOPKINS UNIVERSITY [US]/[US] (AllExceptUS)
  • LAND, H., Bruce, III. [US]/[US] (UsOnly)
Inventors
  • LAND, H., Bruce, III.
Agents
  • GRAF, Ernest, R.
Priority Data
60/229,95801.09.2000US
60/229,95901.09.2000US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) FIBER OPTIC LIGHT SENSOR SYSTEM
(FR) SYSTEME CAPTEUR DE LUMIERE A FIBRES OPTIQUES
Abstract
(EN)
A fiber optic light sensor system employs a fiber optic cable having a core and an annular jacket, the annular jacket covers the core along a jacketed section (20) of the cable to prevent extraneous light from coupling into the cable. One or more sensing sections (16) along the length of the cable where the core is not covered by the jacket are used to receive light from areas of interest such as electrical enclosures (18). A photo detector (26) is coupled to one end of the cable and detects a light signal that enters the cable at the sensing section (16). Signal processing instrumentation (24) connected to the photo detector (26) then processes the light signal. Optionally, a Built-In-Test feature employs a light source (58) to send test signals throughout the system.
(FR)
L'invention concerne un système capteur de lumière à fibres optiques faisant intervenir un câble à fibres optiques présentant une âme et une gaine annulaire, ladite gaine annulaire recouvrant l'âme sur une section gainée (20) du câble afin d'empêcher le couplage de lumière parasite dans le câble. Une ou plusieurs sections de détection (16) situées sur la partie non gainée du câble sont destinées à recevoir de la lumière provenant de zones d'intérêt telles que des enceintes électriques (18). Un photodétecteur (26) est couplé à une extrémité du câble et détecte un signal lumineux pénétrant dans le câble au niveau des sections de détection (16). Des instruments de traitement de signal (24) connectés au photodétecteur (26) traitent ensuite le signal lumineux. Eventuellement, un élément de test intégré fait intervenir une source lumineuse (58) pour envoyer des signaux de test au travers du système.
Also published as
Latest bibliographic data on file with the International Bureau