Monitoring system
AssigneeOtis Elevator Company
InventorDerk Oscar Pahlke
Life of this patent
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Abstract
An elevator system includes a car door and a sensor module. The car door is movable relative to an elevator car by a drive mechanism. The sensor module includes a first acoustic sensor arranged to provide a first acoustic signal, a second acoustic sensor arranged to provide a second acoustic signal, and a processor arranged to receive the first acoustic signal and the second acoustic signal. The processor is programmed to, responsive to an input provided to the first acoustic sensor and the second acoustic sensor, identify a direction of an elevator system noise source based on a first time delay based on the first acoustic signal and the second acoustic signal.
Claims14
An elevator system, comprising:
- a car door movable relative to an elevator car by a drive mechanism;
- and
- a sensor module comprising:
- a first acoustic sensor arranged to provide a first acoustic signal,
- a second acoustic sensor arranged to provide a second acoustic signal,
- a first accelerometer arranged to provide a first acceleration signal,
- a second accelerometer arranged to provide a second acceleration signal,
- and a processor arranged to receive the first acoustic signal and the second acoustic signal;
- the processor is programmed to, responsive to the first acoustic sensor, the second acoustic sensor, the first accelerometer and the second accelerometer, identify a direction of an elevator system noise source based on:
- a first time delay based on the first acoustic signal and the second acoustic signal and a first spatial difference between the first acceleration signal and the second acceleration signal.
A monitoring system for an elevator, comprising:
- a sensor module comprising:
- a first acoustic sensor arranged to provide a first acoustic signal,
- a second acoustic sensor arranged to provide a second acoustic signal,
- a first accelerometer arranged to provide a first acceleration signal,
- a second accelerometer arranged to provide a second acceleration signal,
- and a processor arranged to receive the first acoustic signal and the second acoustic signal;
- the processor is programmed to, responsive to the first acoustic sensor, the second acoustic sensor, the first accelerometer and the second accelerometer, identify a direction of an elevator system noise source based on:
- a first time delay based on the first acoustic signal and the second acoustic signal and a first spatial difference between the first acceleration signal and the second acceleration signal.
A sensor module for an elevator monitoring system, comprising:
- a first acoustic sensor arranged to provide a first acoustic signal;
- a second acoustic sensor arranged to provide a second acoustic signal;
- a first accelerometer arranged to provide a first acceleration signal;
- a second accelerometer arranged to provide a second acceleration signal;
- and
- a processor arranged to receive the first acoustic signal, the second acoustic signal, the first acceleration signal, and the second acceleration signal,
- the processor being programmed to, responsive to the first acoustic sensor, the second acoustic sensor, the first accelerometer, and the second accelerometer, identify a direction of an elevator system noise source based on:
- a first time delay between the first acoustic signal and the second acoustic signal and a first spatial difference between the first acceleration signal and the second acceleration signal.
Dependencies are inferred from the claim text.