Failure detection device for an elevator
AssigneeMitsubishi Electric Corporation
InventorJumpei Yoshino
Life of this patent
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Abstract
A failure detection device for an elevator is provided. The failure detection device includes: a mobile unit that is movable in a hoistway in an up-down direction independently of a car; a distance measurement unit that is mounted to the mobile unit and is configured to measure a horizontal distance; and a control unit including: a movement amount calculator; a car height position acquirer; a reference value storage; a measurement value acquirer; and a determiner. The failure detection device determines whether a failure has occurred in the hoistway based on the measurement value and the reference value stored in the reference value storage in association with the absolute position at which the measurement value has been measured.
Claims11
A failure detection device for an elevator comprising:
- a mobile structure which is movable in a hoistway in an up-down direction independently of an elevating body;
- a distance measurer which is mounted to the mobile structure, and is configured to measure a horizontal distance;
- and
- a controller including:
- a movement amount calculator configured to control the mobile structure and the distance measurer to calculate a movement amount of the mobile structure in the hoistway in the up-down direction;
- an elevating body height position acquirer configured to acquire a height position of the elevating body in the hoistway;
- a reference value storage configured to store, as a reference value, the horizontal distance at a set position in the hoistway;
- a measurement value acquirer configured to acquire, as a measurement value, the horizontal distance measured by the distance measurer at an absolute position of the mobile structure calculated based on the height position of the elevating body and the movement amount of the mobile structure from the height position of the elevating body, and
- a determiner configured to determine whether a failure has occurred in the hoistway based on the measurement value and the reference value stored in the reference value storage in association with the absolute position at which the measurement value has been measured.
Dependencies are inferred from the claim text.