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AIChE Journal, Volume 58, Issue 12, pages 3645–3652, December 2012
Jesus Guardiola, Jose M. Aragón,Guadalupe Ramos, Rosario Elvira,Daniel Martin
Dept. of Chemical Engineering, Universidad de Alcalá, Alcalá de Henares, Madrid 28871, Spain
Faculty of Chemistry, Dept. of Chemical Engineering, University Complutense de Madrid, Madrid 28040, Spain
Abstract
The fine tuning of a sensor designed to locate interfaces using a two-dimensional gas–solid fluidized bed (FB) as reference is described. The sensor works through computer vision and consists of a charge coupled device camera that is placed alongside the bed and, as the human eye would do, first establishes a straight segment of the bed’s top surface to define the phase boundary and then through pattern recognition continuously scans the interface in search of a similar pattern. The field of view is 582 × 752 pixels2. The experimentally measured Pixel size is 216 × 208 um2. The device allows for experimentally obtaining the position of the probe with a resolution of ± 0.01 pixels at 25 Hz. We also describe its use to measure the height of the FB and observe a linear relationship with fluidization velocity. © 2012 American Institute of Chemical Engineers AIChE J, 2012
Copyright © 2012 American Institute of Chemical Engineers (AIChE)
