Detector for force applied to aircraft joy stick - uses optical device containing gray coded disc generating binary signals

The mechanical displacement of the joy stick in an aircraft is sensed by an optical detector to determine the applied force. A coded disc produces binary signals to give high resolution and ready transmission via a multiplexer when several sensors are used. A luminous source (1) emits a beam via an...

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1. Verfasser: CHRISTIAN ENCRENAZ ET BERNARD MULLER
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description The mechanical displacement of the joy stick in an aircraft is sensed by an optical detector to determine the applied force. A coded disc produces binary signals to give high resolution and ready transmission via a multiplexer when several sensors are used. A luminous source (1) emits a beam via an objective lens and mechanical chopper (3) to an optical fibre conductor (4). The light from the conductor passes through an optical slit (5) and objective lens (6) to a grating (7) which emits an optical spectrum (8). This passes through a coded area (10) on a transparent rotating disc (9). The disc produces a binary Gray coded signal which is transmitted via an optical fibre (11) to an optical slit (12) and lens (13) to be reflected by a grating (14) to produce a spectrum for a photodiode detector (16). This gives the angular displacement from a balance position. PROCEDE OPTIQUE DE MESURE D'UN DEPLACEMENT MECANIQUE RESULTANT DE L'ACTION D'UNE FORCE SUR UN ORGANE ESSENTIEL DE COMMANDE D'UN APPAREIL ET SON APPLICATION DANS UN SYSTEME DE STABILISATION ETOU DE COMMANDE AUTOMATIQUE, ET NOTAMMENT PROCEDE OPTIQUE DE MESURE DE L'EFFORT EXERCE PAR LA MAIN D'UN PILOTE SUR LE MANCHE D'UN LEVIER DE COMMANDE, CARACTERISE EN CE QU'IL CONSISTE A EXPRIMER L'EFFORT DE LA MAIN DU PILOTE SUR LE MANCHE DE DIRECTION AU MOYEN D'UN CAPTEUR-TRANSDUCTEUR MECANO-OPTIQUE COMPRENANT UN DISPOSITIF, QUI SUPERPOSE A UNE BANDE SPECTRALE FIXE DONNEE UN DISPOSITIF DE CODAGE MOBILE A DEPLACEMENT CONTROLABLE; EN POSITION ARRETEE DU CAPTEUR, LA SUPERPOSITION OPERE UNE OCCULTATION D'UNE FRACTION DU SPECTRE DANS UN INTERVALLE DE LONGUEUR D'ONDE B0, B9 DEFINI ET SYSTEME OPTIQUE MULTICAPTEURS DE MESURE D'UN DEPLACEMENT MECANIQUE COMPRENANT DES CAPTEURS-TRANSDUCTEURS RESULTANT DE L'UTILISATION DUDIT PROCEDE.DOMAINES D'APPLICATIONS : AERONAUTIQUE MAIS PAS EXCLUSIVEMENT.
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language eng ; fre
recordid cdi_epo_espacenet_FR2458050A2
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subjects ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS
BASIC ELECTRONIC CIRCUITRY
CODE CONVERSION IN GENERAL
CODING
DECODING
ELECTRICITY
MEASURING
MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE
MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE
MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
PHYSICS
TARIFF METERING APPARATUS
TESTING
title Detector for force applied to aircraft joy stick - uses optical device containing gray coded disc generating binary signals
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