ELEVATOR SYSTEMS WITH IMPROVED MONITORING
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United States of America Patent
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Issued Date -
Aug 3, 2023
app pub date -
Oct 26, 2022
filing date -
Jan 28, 2022
priority date (Note) -
Published
status (Latency Note)
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Abstract
An elevator system (201) includes an elevator car (203) arranged to move within an elevator shaft, an elevator drive (211) including a brake (208), an elevator controller (230) configured to control the elevator drive so as to control the movement of the elevator car between a plurality of landings in the elevator shaft, a position reference system (240) configured to measure a position of the elevator car within the elevator shaft, and a safety controller (232) connected to the position reference system (240) to receive car position information and configured to selectively apply the brake of the elevator drive so as to stop the elevator car. The safety controller is configured to monitor the received car position information at least when the elevator car is moving in a designated unlocking zone of a given landing with an elevator car door open and to apply the brake.
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