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Arrangement and a method for measuring the position of an installation platform in an elevator shaft

Patentnummer:US9828212B2
IPC Hauptklasse:G01B001114
Anmelder:
Erfinder:
Anmeldung:31.03.16
Offenlegung:23.04.15
Patenterteilung:28.11.17

Abstract / Hauptanspruch
The arrangement comprises an installation platform movable upwards and downwards in the elevator shaft, at least one light source arranged at a predetermined position in the elevator shaft below the installation platform and producing a vertically upwards directed collimated light beam, at least one primary digital imaging device positioned on the installation platform and being arranged to take electronic images of the light beam hitting the photosensitive sensor of the at least one primary digital imaging device or of a pattern created by the light beam on a reflective or transparent screen positioned at a distance in front of the photosensitive sensor of the at least one primary digital imaging device, whereby the horizontal position of the installation platform in relation to the elevator shaft can be measured from the electronic images taken by the at least one primary digital imaging device.

US9828212B2


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