Elevator control system with reliability monitoring
US12421078B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2021 |
| Grant date | Sep 23, 2025 |
| Priority date | — |
| Expiry date | Jul 27, 2044 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B5/02
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An illustrative example embodiment of an elevator control system includes a drive configured to control power provided to an elevator machine, a machine power switch module configured to selectively disconnect power from the elevator machine, and a brake power switch module configured to selectively disconnect power from a brake associated with the elevator machine. A monitor module includes a first monitor unit and a second monitor unit. Each monitor unit is configured to monitor a condition of the machine power switch module and the brake power switch module. The monitor units each provide an output to the other monitor unit including a current condition of the machine power switch module and a current condition of the brake power switch module as detected by that monitoring unit. Each of the monitor units is configured to determine whether there is correspondence between the outputs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.