公开(公告)号：US20190047818A1

公开(公告)日：2019-02-14

申请号：US15758776

申请日：2015-09-10

Applicant: Otis Elevator Company

Inventor： Peter Herkel ,  Dirk Tegtmeier

IPC: B66B5/00 ,  G01R31/02 ,  B66B13/22 ,  G05B19/042 ,  G01R19/165

Abstract: A ground fault detection apparatus (32) for detecting a ground fault of a safety chain (10b; 10c; 10d), in particular a safety chain (10b; 10c; 10d) of a people conveyor, comprises: a supply line current monitoring unit (26), which is configured for measuring a current flowing into the safety chain (10b; 10c; 10d) and providing a first signal indicative of the amount of current flowing into the safety chain (10b; 10c; 10d); a return line current monitoring unit (28), which is configured for measuring a current flowing out of the safety chain (10b; 10c; 10d) and providing a second signal indicative of the amount of current flowing out of the safety chain (10b; 10c; 10d); and a comparison unit (30), which is configured for comparing the first and second signals and issuing an alarm signal in case the difference between the first and second signals exceeds a predetermined limit.

公开(公告)号：US11993481B2

公开(公告)日：2024-05-28

申请号：US16338882

申请日：2017-09-22

Applicant: Otis Elevator Company

Inventor： Peter Herkel ,  Dirk Tegtmeier

IPC: B66B1/34 ,  B66B5/00 ,  G01B3/10 ,  G01P3/00 ,  G01P15/00

CPC classification number: B66B1/3492 ,  B66B5/0018 ,  G01B3/10 ,  G01P3/00 ,  G01P15/00

Abstract: An elevator system (2) comprises a hoistway (4) extending between a plurality of landings (8); the hoistway (4) comprising landing portions (A) and intermediate portions (B), wherein each landing portion (A) extends around a corresponding landing (8) and each intermediate portion (B) is located between two adjacent landing portions (A); an elevator car (6), which is configured for traveling along the hoistway (4); a first position determining system (15), which is configured for determining the current position of the elevator car (6) while it is located within one of the landing portions (A); and a second position determining system (17), which is configured for determining the current position of the elevator car (6) while it is located within one of the intermediate portions (B).

公开(公告)号：US20210276825A1

公开(公告)日：2021-09-09

申请号：US16338882

申请日：2017-09-22

Applicant: Otis Elevator Company

Inventor： Peter Herkel ,  Dirk Tegtmeier

IPC: B66B1/34 ,  B66B5/00 ,  G01P3/00 ,  G01P15/00 ,  G01B3/10

Abstract: An elevator system (2) comprises a hoistway (4) extending between a plurality of landings (8); the hoistway (4) comprising landing portions (A) and intermediate portions (B), wherein each landing portion (A) extends around a corresponding landing (8) and each intermediate portion (B) is located between two adjacent landing portions (A); an elevator car (6), which is configured for traveling along the hoistway (4); a first position determining system (15), which is configured for determining the current position of the elevator car (6) while it is located within one of the landing portions (A); and a second position determining system (17), which is configured for determining the current position of the elevator car (6) while it is located within one of the intermediate portions (B).

公开(公告)号：US20180319622A1

公开(公告)日：2018-11-08

申请号：US15773661

申请日：2016-10-27

Applicant: Peter HERKEL ,  Otis Elevator Company

Inventor： Peter Herkel ,  Dirk Tegtmeier

IPC: B66B1/28 ,  B66B1/34 ,  B66B5/00 ,  B66B9/00 ,  B66B5/02

CPC classification number: B66B1/28 ,  B66B1/3492 ,  B66B5/0018 ,  B66B5/0087 ,  B66B5/02 ,  B66B9/00

Abstract: An elevator system (2) comprises: a hoistway (14) extending between a plurality of landing zones (6, 8, 9); at least one elevator car (12) configured for moving along the hoistway (14); at least one positional sensor (24, 26, 63, 83, 93) arranged at a defined position within the hoistway (14); a speed and/or acceleration sensor (25), which is configured for determining current speed and/or acceleration information of the at least one elevator car (12) within the hoistway (14); and an elevator controller (28), which is configured for: A) calculating current positional information of the at least one elevator car (12) within the hoistway (14) from the speed and/or acceleration information; B) checking the validity of the speed and/or acceleration information; C) in case the speed and/or acceleration information is determined as being valid: operating the elevator system (2) based on the calculated positional information; D) in case the speed and/or acceleration information is determined as not being valid: D1) starting a timer; D2) controlling the at least one elevator car (12) to run by the at least one positional sensor (24, 26, 63, 83, 93) for re-calibrating the positional information of the at least one elevator car (12); and D3) stopping any operation of the elevator system (2), in case the at least one elevator car (12) has not run by the at least one positional sensor (24, 26, 63, 83, 93) within a predetermined period of time from starting the timer.