Conveyor jam detection system and method
AssigneeSick AG
InventorsAlexander Shteinfeld, Richard Lydon
Life of this patent
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Abstract
A conveyor jam detection system and method includes a distance detector located on one side of a conveyor oriented to detect the distance from the detector to parcels on the conveyor. A controller is responsive to the distance detector and is configured to compare distance measurements, to reset a jam count if different distance measurements over time are greater than a threshold, to increment the jam count if different distance measurements over time are less than the threshold, and output a jam condition signal if the jam count exceeds a set limit.
Claims5
A conveyor jam detection system comprising:
- a distance detector located on one side of a conveyor oriented to measure the distance from the detector to parcels on the conveyor;
- a controller responsive to the distance detector and configured:
- to compare distance measurements,
- to reset a jam count if distance measurements differ greater than a threshold,
- to increment the jam count if distance measurements differ less than the threshold, and
- output a jam condition signal if the jam count exceeds a set limit.
A conveyor jam detection method comprising:
- measuring the distance to parcels on a conveyor and outputting a distance measurement signal;
- comparing distance measurement signals;
- calculating differences in consecutive distance measurements;
- resetting a jam count if the difference is greater than a threshold;
- incrementing the jam count if the difference is less than the threshold;
- and
- outputting a jam condition signal if the jam count exceeds a set limit.
Dependencies are inferred from the claim text.