Patent №
US 4,750,591
Granted
1988-06-14
Filed 1987
Owner
OTIS ELEVATOR COMPANY, TEN FARM SPRINGS, FARMINGTON, CT 06032 A CORP. OF NJ
Lab
—
AI components
3
ml · vision · planning
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
07072818
An elevator monitoring apparatus and method are disclosed in which an elevator is modeled as operating in a closed loop chain of normal operating states from which message initiating transitions to abnormal states causes the latest to occur of a selected number of monitored events are recovered from a storage buffer as an aid to an analysis of an abnormal state. Door and motion closed loop chain state machines are disclosed as effective tools for abnormal event detection, especially for a state machine approach implemented within an elevator controller.
AI classification
Ownership
OTIS ELEVATOR COMPANY, TEN FARM SPRINGS, FARMINGTON, CT 06032 A CORP. OF NJ
assignment · 47370900
Assignors
COSTE, STEVEN D., SCHIENDA, GREGORY A.
On an employer assignment, the assignors are typically the inventors.