Patent No. EP3674242 (titled "Enhancing Elevator Sensor Operation For Improved Maintenance") was filed by Otis Elevator on Dec 3, 2019. The application was issued on Nov 16, 2022.
Elevator system with enhanced sensing data utilizing a secondary sensor. The system includes a primary sensor and at least one secondary sensor that obtain data associated with the elevator system. The primary sensor data is analyzed in response to a predetermined state of the elevator system being detected in secondary sensor data, enabling more accurate condition monitoring and maintenance scheduling.

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