OPTO-ELECTRICAL ACTUATION SYSTEM AND METHOD

A selective optical actuation system for a plurality of electrical devices (20) comprises a variable pulse frequency pulsed light source (10) and an optical fibre network (12, 13, 14) distributing the light pulses to actuation gateway for each device, comprising a photovoltaic converter (16) whose c...

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Bibliographic Details
Main Authors LEGGETT, NIGEL DEREK, MCINNES, JAMES
Format Patent
LanguageEnglish
French
German
Published 22.12.2004
Edition7
Subjects
BASIC ELECTRONIC CIRCUITRY
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
PHYSICS
PULSE TECHNIQUE
SIGNALLING
TRANSMISSION
TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILARSIGNALS
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Summary:A selective optical actuation system for a plurality of electrical devices (20) comprises a variable pulse frequency pulsed light source (10) and an optical fibre network (12, 13, 14) distributing the light pulses to actuation gateway for each device, comprising a photovoltaic converter (16) whose correspondingly pulsed electrical output is applied to a ferroelectric transformer (18). Only if the pulse frequency is within the resonant band for a given transformer will the voltage be raised above a threshold value required to actuate that device. Choice of light pulse frequency thereby determines the device(s) to be actuated.
Bibliography:Application Number: EP20000940513