Device for determining the distance to an outer surface of a roll of material and related method
US9791568B2 · kind B2 · utility
5Cited by
1References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 31, 2014 |
| Grant date | Oct 17, 2017 |
| Priority date | — |
| Expiry date | Dec 31, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2557/512
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.