Device for determining the distance to an outer surface of a roll of material and related method
Abstract:
A sensing device is for sensing an outer surface of a roll of material. An infrared (IR) laser source is configured to direct IR laser radiation to the outer surface of the roll of material. A single photon avalanche diode (SPAD) detector is configured to receive reflected IR laser radiation from the outer surface of the roll of material. A controller is coupled to the IR laser source and the SPAD detector to determine a distance to the outer surface of the roll of material based upon a time-of-flight of the IR laser radiation.
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