Title:
PIT STATE CONFIRMATION SYSTEM OF ELEVATOR
Document Type and Number:
Japanese Patent JP2015151207
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a pit state confirmation system of an elevator, which can save time and labor for confirmation work by a worker and keep an environment in the pit at a constant level.SOLUTION: A pit state confirmation system 20 comprises: an imaging section 22 that images predetermined areas in a pit 10 below a hoistway 12 at maintenance decision time intervals; a discriminating section 24 that divides the images taken by the imaging section 22 into a plurality of squares and discriminates brightness of each square between two values of a white level and a black level; and comparing/outputting section 26 that compares the two values discriminated by the discriminating section 24 with two values previously discriminated for each square, and when the number of squares which change from the white level to the black level or from the black level to the white level surpasses a predetermined threshold, outputs a maintenance signal showing that maintenance is necessary.
Inventors:
KATO ISAMU
Application Number:
JP2014024229A
Publication Date:
August 24, 2015
Filing Date:
February 12, 2014
Export Citation:
Assignee:
MITSUBISHI ELEC BUILDING TECHN
International Classes:
B66B7/00; B66B5/00; H04N7/18
Domestic Patent References:
| JPH06118024A | 1994-04-28 | |||
| JP2008001494A | 2008-01-10 | |||
| JP2011105415A | 2011-06-02 | |||
| JP2006058155A | 2006-03-02 |
Attorney, Agent or Firm:
Patent Corporation yki International Patent Office
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