Title :
Application of optical tomography in industrial process control system
Author :
Ibrahim, S. ; Green, R.G. ; Dutton, K. ; Rahim, Ruzairi Abdul
Author_Institution :
Sch. of Eng., Sheffield Hallam Univ., UK
Abstract :
The overall aim of the project is to investigate the application of an optical tomographic system in an industrial process control system. Measurements were made with lensed optical fibre sensors using a hydraulic flow rig. A custom heating fixture was used to construct the lenses. The system employs a combination of two orthogonal projections consisting of sixteen sensors and two rectilinear projections consisting of twenty two sensors. Optical energy is projected into the measurement volume using a well collimated beam from four projectors. Gas bubbles, with an approximate diameter of 1 cm are injected at the bottom of the gas column. Gas volume flow rates of 0-71/min are being investigated. Optical sensors are intended for use where the conveyed component ratio is less than 10% vol./vol. The purpose of the system is for online monitoring of concentration and velocity profiles in two-phase flows
Keywords :
bubbles; fibre optic sensors; flow measurement; optical tomography; process control; process monitoring; two-phase flow; concentration; gas bubbles; gas volume flow rates; hydraulic flow rig; industrial process control system; lensed optical fibre sensors; online monitoring; optical energy; optical tomography; orthogonal projections; rectilinear projections; two-phase flows; velocity profiles; Electrical equipment industry; Fluid flow measurement; Heating; Image motion analysis; Industrial control; Optical fiber sensors; Optical sensors; Process control; Sensor systems; Tomography;
Conference_Titel :
TENCON 2000. Proceedings
Conference_Location :
Kuala Lumpur
Print_ISBN :
0-7803-6355-8
DOI :
10.1109/TENCON.2000.893717
