Title:
SPEED DETECTION DEVICE OF ELEVATOR AND ELEVATOR
Document Type and Number:
WIPO Patent Application WO/2020/008696
Kind Code:
A1
Abstract:
In this elevator, the traveling speed of a cage is detected without processing of an elevator hoistway internal member. This speed detection device detects the speed of a cage inside an elevator hoistway through which the cage moves up and down, and is attached to the cage. The speed detection device is provided with: a detection unit which detects, from images, the surface conditions of a pair of guide rails installed so as to face each other in the elevator hoistway along a traveling path of the cage; and a calculation unit which executes a calculation of the speed of the cage from a difference between images of surfaces of the guide rails detected by the detection unit.
Inventors:
KONDO TAKESHI (JP)
HAYAKAWA TOMOHISA (JP)
INOUE SHINSUKE (JP)
NOGUCHI NAOAKI (JP)
HAYAKAWA TOMOHISA (JP)
INOUE SHINSUKE (JP)
NOGUCHI NAOAKI (JP)
Application Number:
PCT/JP2019/016159
Publication Date:
January 09, 2020
Filing Date:
April 15, 2019
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
B66B3/02; B66B1/28; B66B5/02; B66B5/06
Foreign References:
| CN105173949A | 2015-12-23 | |||
| JPH06127851A | 1994-05-10 | |||
| JP2002274765A | 2002-09-25 | |||
| JP2015059014A | 2015-03-30 | |||
| JP2010275078A | 2010-12-09 |
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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