Method for level monitoring with improved accuracy of an elevator car

A method which provides for level monitoring of an elevator car 12 within a hoistway 14 at a plurality of floors 20 by providing a plurality of sensed signals which is indicative of an elevator position of the elevator car relative to a plurality of targets 16 having a plurality of light absorptive...

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Bibliographic Details
Main Authors WURTS, WILLIAM A, BLACKABY, BARRY G, REMMERS, TIMOTHY M
Format Patent
LanguageEnglish
French
German
Published 07.01.1999
Edition6
Subjects
ELEVATORS
ESCALATORS OR MOVING WALKWAYS
HAULING
HOISTING
LIFTING
PERFORMING OPERATIONS
TRANSPORTING
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Summary:A method which provides for level monitoring of an elevator car 12 within a hoistway 14 at a plurality of floors 20 by providing a plurality of sensed signals which is indicative of an elevator position of the elevator car relative to a plurality of targets 16 having a plurality of light absorptive surfaces and a plurality of light interactive regions, the plurality of targets mounted within the hoistway at the plurality of floors. The plurality of sensed signals is processed to provide a leveling variable, a floor number variable and a direction of travel variable which indicate a direction of travel of the elevator car within the hoistway. The leveling variable, floor number variable and direction of travel variable are stored at a remote elevator monitoring central processor.
Bibliography:Application Number: EP19970308732