Depth Measurement of Moving Slurry at the Wet End of a Paper Machine

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Description

The paper industry has long had a need to better understand and control its papermaking process upstream, specifically at the wet end in the forming section of a paper machine. A vision-based system is under development that addresses this need by automatically measuring and interpreting the pertinent paper web parameters at the wet end in real time. The wet-end characterization of the paper web by a vision system involves a four-dimensional measurement of the slurry in real time. These measurements include the two-dimensional spatial information, the intensity profile, and the depth profile. This paper describes the real-time depth profile measurement ... continued below

Physical Description

7 p.

Creation Information

Abidi, B.R.; Goddard, J.S., Jr.; Hunt, M.A.; Sari-Sarraf, H. & Turner, J.C. January 24, 1999.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this article can be viewed below.

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  • Oak Ridge National Laboratory
    Publisher Info: Oak Ridge National Laboratory, Oak Ridge, TN (United States)
    Place of Publication: Oak Ridge, Tennessee

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Description

The paper industry has long had a need to better understand and control its papermaking process upstream, specifically at the wet end in the forming section of a paper machine. A vision-based system is under development that addresses this need by automatically measuring and interpreting the pertinent paper web parameters at the wet end in real time. The wet-end characterization of the paper web by a vision system involves a four-dimensional measurement of the slurry in real time. These measurements include the two-dimensional spatial information, the intensity profile, and the depth profile. This paper describes the real-time depth profile measurement system for the high-speed moving slurry. A laser line-based measurement method is used with a high-speed programmable camera to directly measure slurry height. The camera is programmed with a profile algorithm, producing depth data at fast sampling rates. Analysis and experimentation have been conducted to optimize the system for the characteristics of the slurry and laser line image. On-line experimental results are presented.

Physical Description

7 p.

Notes

OSTI as DE00003729

Medium: P; Size: 7 pages

Source

  • Electronic Imaging '99, San Jose, CA (US), 01/24/1999--01/29/1999

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  • Report No.: ORNL/CP-101274
  • Grant Number: AC05-96OR22464
  • Office of Scientific & Technical Information Report Number: 3729
  • Archival Resource Key: ark:/67531/metadc684699

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  • January 24, 1999

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • April 11, 2017, 3:10 p.m.

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Abidi, B.R.; Goddard, J.S., Jr.; Hunt, M.A.; Sari-Sarraf, H. & Turner, J.C. Depth Measurement of Moving Slurry at the Wet End of a Paper Machine, article, January 24, 1999; Oak Ridge, Tennessee. (digital.library.unt.edu/ark:/67531/metadc684699/: accessed September 26, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.