Title:
SENSING SYSTEM FOR DETERMINING ABSOLUTE POSITION OF ELEVATOR CAR AND SELF-TESTING METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2019/169623
Kind Code:
A1
Abstract:
A sensing system for determining absolute position of an elevator car and a self-testing method thereof. The sensing system comprises: a grid ruler (30) arranged vertically in a hoistway (20), wherein the grid ruler (30) is provided with a column of first-type identifiers (310) and a column of second-type identifiers (320) arranged side by side in a lengthwise direction of the grid ruler (30), and the first-type identifiers (310) cooperate with the second-type identifiers (320) to form information about the absolute position of the elevator car (10); a sensing device (40), wherein the sensing device (40) is fixed on the elevator car (10), and is provided with at least two first sensors (410) arranged in a vertical direction and used for identifying the first-type identifiers (310) and at least one second sensor (420) used for identifying the second-type identifiers (320); and a controller (50) communicatively connected to the sensing device (40). The sensing system for determining absolute position of an elevator car and the self-testing method thereof simplify a sensing technique, and improve sensing accuracy.
Inventors:
GUO ZHIHAI (CN)
ZHANG WENJUN (CN)
DU YONGCONG (CN)
ZHANG WENJUN (CN)
DU YONGCONG (CN)
Application Number:
PCT/CN2018/078557
Publication Date:
September 12, 2019
Filing Date:
March 09, 2018
Export Citation:
Assignee:
HITACHI ELEVATOR CHINA CO LTD (CN)
International Classes:
B66B5/00
Foreign References:
| CN205328390U | 2016-06-22 | |||
| CN103253576A | 2013-08-21 | |||
| CN105480797A | 2016-04-13 | |||
| JPH03106774A | 1991-05-07 | |||
| JP2004035218A | 2004-02-05 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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