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1.发明公开公开(公告)号：US20240230760A1
公开(公告)日：2024-07-11
申请号：US18388439
申请日：2023-11-09
Applicant: Otis Elevator Company
Inventor： Heping Qiu , Tongqiu Liu , Ming Yin , Tingting Wang , Hongliang Tian , Guoping Pan , Baoxiang Cen , Longwen Wang , Lan Wang
IPC: G01R31/327 , B66B5/02 , G01R19/257 , H02P3/22
CPC classification number: G01R31/3277 , B66B5/02 , G01R19/257 , H02P3/22
Abstract: A device for detecting a function of a contactor, the contactor is configured to short three-phase phase lines of an elevator motor together by closing contacts, the device including: a voltage signal source coupled with the contactor; a voltage detection unit coupled with the three-phase phase lines of the elevator motor; a switching unit arranged between the contactor and the voltage signal source and between the voltage detection unit and the three-phase phase lines, in a detection mode, the switching unit is configured to conduct the voltage signal source to the contactor to provide a voltage detection signal to the three-phase phase lines via the contactor and to conduct the voltage detection unit to the three-phase phase lines, the voltage detection unit being configured to measure voltage of the three-phase phase lines and to output measurement to a control unit.
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2.发明授权公开(公告)号：US10059569B2
公开(公告)日：2018-08-28
申请号：US15660194
申请日：2017-07-26
Applicant: Otis Elevator Company
Inventor： Hui Fang , Zhen Jia , Yanzhi Chen , Alan Matthew Finn , Arthur Hsu , Jianwei Zhao , ZhaoXia Hu , Qiang Li , Anna Su , Longwen Wang , XuLei Guo , Alois Senger
CPC classification number: B66B29/005 , B66B21/02 , B66B25/003 , B66B29/08 , G06K9/00369 , G06K9/00771 , G06K9/6254
Abstract: A monitoring system and a monitoring method for a passenger conveying device, and the passenger conveying device. The monitoring system comprises an imaging sensor and/or a depth sensing sensor for sensing a monitoring area of the passenger conveying device to acquire data frames; and a processing device for performing data processing on the data frames to monitor whether the monitoring area is abnormal, and configured to comprise: a background acquisition module for acquiring a background model based on data frames sensed when the monitoring area is in a normal state; a foreground detection module for comparing data frames sensed in real time with the background model to obtain a foreground object; a foreground feature extraction module for extracting a corresponding foreground object markup feature from the foreground object; and a state judgment module for judging whether the foreground object belongs to an abnormal population.
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3.发明申请公开(公告)号：US20180029838A1
公开(公告)日：2018-02-01
申请号：US15660194
申请日：2017-07-26
Applicant: Otis Elevator Company
Inventor： Hui Fang , Zhen Jia , Yanzhi Chen , Alan Matthew Finn , Arthur Hsu , Jianwei Zhao , ZhaoXia Hu , Qiang Li , Anna Su , Longwen Wang , XuLei Guo , Alois Senger
CPC classification number: B66B29/005 , B66B21/02 , B66B25/003 , B66B29/08 , G06K9/00369 , G06K9/00771 , G06K9/6254
Abstract: A monitoring system and a monitoring method for a passenger conveying device, and the passenger conveying device. The monitoring system comprises an imaging sensor and/or a depth sensing sensor for sensing a monitoring area of the passenger conveying device to acquire data frames; and a processing device for performing data processing on the data frames to monitor whether the monitoring area is abnormal, and configured to comprise: a background acquisition module for acquiring a background model based on data frames sensed when the monitoring area is in a normal state; a foreground detection module for comparing data frames sensed in real time with the background model to obtain a foreground object; a foreground feature extraction module for extracting a corresponding foreground object markup feature from the foreground object; and a state judgment module for judging whether the foreground object belongs to an abnormal population.
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