Elevator with code pattern to determine car position
AssigneeKone Corporation
InventorsMikko Puranen, Pentti Alasentie
Life of this patent
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Abstract
An elevator including a hoistway, an elevator car vertically movable in the hoistway, a rope connected to the elevator car movably together with the elevator car, a guide for guiding the rope along a path and a device that determines a position of the elevator car. The device includes an elongated code mark pattern provided on the rope, one or more sensors mounted beside the rope for sensing code marks of the code mark pattern, and an analyzer connected with the a plurality of sensors. The one or more sensors sense code marks of the code mark pattern passing by them when the rope moves along its path, and the analyzer determines the current position of the elevator car based on code marks sensed by the one or more sensors during movement of the rope.
Claims20
An elevator comprising:
- a hoistway;
- an elevator car vertically movable in the hoistway;
- a rope connected to the elevator car movably together with the elevator car;
- guiding means for guiding the rope along a path;
- and
- means for determining position of the elevator car, said means for determining position of the elevator car comprising:
- an elongated code mark pattern provided on the rope, which elongated code mark pattern comprises code marks distributed along a length of the rope;
- a plurality of sensors mounted beside the rope for sensing the code marks of said code mark pattern, the plurality of sensors being spaced in a width direction and a length direction of the rope and being configured to generate separate sensor signals, wherein the spacing in the length direction enables determination of a running direction of the rope;
- and
- an analyzer connected with the plurality of sensors,
- wherein the plurality of sensors are arranged to sense the code marks of the code mark pattern passing by them when the rope moves along its path, and said analyzer is configured to determine current position of the elevator car based on the code marks sensed by the plurality of sensors during movement of the rope.
Dependencies are inferred from the claim text.