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US 5,682,331 AGranted
Motion tracking using applied thermal gradients
AssigneeXerox Corporation
InventorAndrew A. Berlin
Life of this patent
Estimating the term…
Abstract
An object tracking and motion control system includes a thermal marking unit such as a laser for inducing localized thermal indicia on objects. A thermal tracking unit, typically a two dimensional thermal sensing array, is positioned to measure movement of objects marked with localized thermal indicia. A motion control unit is connected to the thermal tracking unit to permit adjustment of motion of objects marked with induced localized thermal indicia based on their measured movement.
Claims12
An object tracking and motion control system comprising
- a thermal marking unit for inducing a localized thermal indicia on objects,
- a thermal tracking unit positioned adjacent to the thermal marking unit for measuring movement of objects marked with the localized thermal indicia, the thermal tracking unit having a temperature sensing array comprising a plurality of spaced apart temperature sensors, with at least some of the plurality of spaced apart temperature sensors providing subregion temperatures of the localized thermal indicia for calculating a temperature centroid of the localized thermal indicia, and
- a motion control unit connected to the thermal tracking unit, the motion control unit configured to adjust motion of objects marked with the localized thermal indicia based on movement of the temperature centroid of the localized thermal indicia as measured by the thermal tracking unit.
An object tracking and motion control system comprising
- a thermal cooling unit for inducing localized cooled indicia on objects,
- a thermal tracking unit positioned adjacent to the thermal cooling unit for measuring movement of objects marked with localized cooled indicia, and
- a motion control unit connected to the thermal tracking unit, the motion control unit configured to adjust motion of objects marked with induced localized cooled indicia based on movement as measured by the thermal tracking unit.
Dependencies are inferred from the claim text.