Title:
CAR POSITION DETECTION DEVICE AND ELEVATOR SAFETY DEVICE USING SAME
Document Type and Number:
WIPO Patent Application WO/2022/249383
Kind Code:
A1
Abstract:
Disclosed is a car position detection device that detects a car position on the basis of images in a hoistway and that can be applied to a safety device having a terminal floor deceleration stop function. This car position detection device comprises: an image sensor (9) that detects the position of a car (1) of an elevator on the basis of images in a hoistway, is installed on the car, and acquires images of the surface of a guide rail (5) that guides the car; a plurality of marks (11, 12) that are aligned along the longitudinal direction of the guide rail on the surface of the guide rail adjacent to an end floor; and a safety controller (8) that calculates the position of the car on the basis of images of the plurality of marks acquired by the image sensor. The plurality of marks have a plurality of types of pattern shapes, and are arranged so that adjacent marks have different pattern shapes.
Inventors:
SAITO YUKI (JP)
IWAMOTO AKIRA (JP)
ONISHI YOSHITO (JP)
IWAMOTO AKIRA (JP)
ONISHI YOSHITO (JP)
Application Number:
PCT/JP2021/020151
Publication Date:
December 01, 2022
Filing Date:
May 27, 2021
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
B66B3/02
Foreign References:
| JPS56161278A | 1981-12-11 | |||
| JP2002274765A | 2002-09-25 | |||
| JP2008285265A | 2008-11-27 | |||
| JP2008037557A | 2008-02-21 | |||
| JPH01294180A | 1989-11-28 |
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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