Vibration-based elevator tension member wear and life monitoring system
AssigneeOtis Elevator Company
InventorRandall Keith Roberts
Life of this patent
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Abstract
An elevator system (100) includes an elevator drive system (101) including a tension member (103) supporting an elevator car (106) under tension and a monitoring system (102). The monitoring system includes a vibration sensor (111) for detecting vibration of at least one of the tension member and the elevator car and an analysis unit (112) for determining a level of wear and life of the tension member based on the vibration of the tension member detected by the vibration sensor.
Claims20
An elevator system, comprising:
- an elevator drive system including a tension member supporting an elevator car under tension;
- and
- a wear and life monitoring system comprising a vibration sensor for detecting vibration of at least one of the tension member and the elevator car, and a wear and life analysis unit for determining a level of wear and life of the tension member based on the vibration of the tension member detected by the vibration sensor.
A method of determining a level of wear and life of a tension member supporting a load, the method comprising:
- detecting a vibration of one of an elevator car and a tension member supporting the elevator car;
- and
- determining a level of wear and life of the tension member based on the detected vibration.
A tension member wear and life monitoring system, comprising:
- one or more sensors to detect a vibration of at least one of an elevator car and a tension member supporting the elevator car;
- and
- a wear and life analysis unit for determining a level of wear and life of the tension member based on the vibration of the tension member detected by the one or more sensors.
Dependencies are inferred from the claim text.