Handrail tension monitoring device for a passenger transport system
AssigneeInventio AG
InventorMartin Ortbauer
Life of this patent
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Abstract
A handrail tension monitoring device for a passenger transport system designed as a moving walkway or escalator can include a distance sensor and a signal processing unit. Measurement signals detected by the distance sensor can be processed and evaluated in the signal processing unit. A vibration frequency of a scanned handrail of the passenger transport system can be determined from the signal curve of the measurement signals and the vibration frequency can be compared with a lower threshold value or upper threshold value. An alarm signal can be generated if the lower threshold value is not reached and a warning signal can be generated if the upper threshold value is exceeded.
Claims12
A handrail tension monitoring device for a passenger transport system configured as a moving walkway or escalator, the handrail tension monitoring device comprising:
- at least a distance sensor that produces measurement signals of a distance between the distance sensor and a handrail of the passenger transport system;
- and
- a signal processing unit that receives the measurement signals of the distance between the distance sensor and the handrail detected by the at least one distance sensor and processes the measurement signals of the distance between the distance sensor and the handrail to:
- determine a vibration frequency of the handrail from a signal curve of the measurement signals of the distance between the distance sensor and the handrail,
- compare the vibration frequency to at least one of a lower threshold value or an upper threshold value, and
- generate an alarm signal if the lower threshold value is not reached and a warning signal if the upper threshold value is exceeded.
A method for processing and evaluating measurement signals of a handrail tension monitoring device of a passenger transport system configured as a moving walkway or escalator, wherein the handrail tension monitoring device comprises at least one distance sensor that produces measurement signals and a signal processing unit that receives the measurement signals detected by the at least one distance sensor and processes the measurement signals, the method comprising:
- determining a vibration frequency of a scanned handrail of the passenger transport system from a signal curve of the measurement signals;
- comparing the vibration frequency with at least one lower threshold value or upper threshold value;
- and
- generating an alarm signal if the lower threshold value is not reached and a warning signal if the upper threshold value is exceeded.
Dependencies are inferred from the claim text.