Title:
CAR POSITION DETECTION DEVICE AND ELEVATOR USING SAME
Document Type and Number:
WIPO Patent Application WO/2022/259398
Kind Code:
A1
Abstract:
Disclosed are a highly reliable car position detection device that measures the position of a car on the basis of an image in a hoistway, and an elevator that uses the car position detection device. This car position detection device detects the position of an elevator car on the basis of an image in a hoistway and comprises: an image sensor (9a) that is installed in a car (1) and acquires an image of the surface of a guide rail (5a) that guides the car; a mark (10a, 11a, 12a) that is provided on the surface of the guide rail; and a safety controller (8) that calculates the position of the car on the basis of the surface image acquired by the image sensor and corrects the calculated position of the car on the basis of the image of the mark acquired by the image sensor. The safety controller detects an abnormality in the mark on the basis of positional information for the mark and the calculated position of the car. Upon detecting an abnormality in the mark, the safety controller reports the abnormality to external devices (30, 40).
Inventors:
SAITO YUKI (JP)
IWAMOTO AKIRA (JP)
ONISHI YOSHITO (JP)
IWAMOTO AKIRA (JP)
ONISHI YOSHITO (JP)
Application Number:
PCT/JP2021/021845
Publication Date:
December 15, 2022
Filing Date:
June 09, 2021
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
B66B5/00; B66B3/02
Foreign References:
| JP2017057024A | 2017-03-23 | |||
| JP2020007085A | 2020-01-16 | |||
| JP2021046304A | 2021-03-25 | |||
| JP2004051279A | 2004-02-19 | |||
| JP2018177489A | 2018-11-15 | |||
| JP2011073885A | 2011-04-14 |
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
Download PDF:
Previous Patent: ELEVATOR CONTROL FACILITY
Next Patent: METHOD FOR PRODUCING SEMICONDUCTOR AND APPARATUS FOR PRODUCING SEMICONDUCTOR
Next Patent: METHOD FOR PRODUCING SEMICONDUCTOR AND APPARATUS FOR PRODUCING SEMICONDUCTOR