Method for detecting changes in an area to be monitored
AssigneeInventio AG
InventorsLars Dehmel, Felix Pfeifer
Life of this patent
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Abstract
A method for detecting changes in an area to be monitored of a conveying system utilizes a sound sensor and an evaluation unit connected to the sound sensor. The method includes emitting an acoustic pulse into the area to be monitored, recording an acoustic response signal of the pulse as an actual signal, determining an envelope of the actual signal, and detecting changes on the basis of the envelope.
Claims15
1-13. (canceled)
A method for detecting changes in an area to be monitored of a conveying system, the conveying system having a sound sensor and an evaluation unit connected to the sound sensor, the method comprising the steps of:
- emitting an acoustic pulse into the area to be monitored;
- recording an acoustic response signal as an actual signal, the acoustic response signal being detected by the sound sensor as a reflection of the acoustic pulse in the area;
- determining an envelope of the actual signal;
- detecting changes in the area based upon the envelope;
- and
- wherein the detecting changes is performed by determining a spectrum of the envelope of the actual signal as an actual measurement.
Dependencies are inferred from the claim text.