3rd International Conference on Emerging Trends in Scientific Research 25-26 April, 2015 Pearl International Hotel, Kuala Lumpur, Malaysia

1. Abstract of Emerging Trends in Scientific Research, 2015, Vol.3
DOI: 10.18488/journal.1002/2015.3/1002.3
3rd International Conference on Emerging Trends in
Scientific Research
25-26 April, 2015
Pearl International Hotel, Kuala Lumpur, Malaysia
Conference Website: www.pakrdw.com
2
Paper ID: 613/15/3
rd
ICETSR
A Tomography Imaging System Using Optical and
Electrodynamic Sensors
Sallehuddin Ibrahim1
--- Mustafa Musbah Elmajri2
--- Mohd Amri Md Yunus3
---
Mohd Taufiq Md Khairi4
1,2,3,4
Faculty of Electrical Engineering, Universiti Teknologi Malaysia, Johor Bahru, Malaysia
Abstract
Tomography is a technique which performs flow imaging in a process vessel or pipeline
using suitable sensors. This technique involved placing sensors installed around the pipe
which collect the required information about the flow in the pipeline. This paper expounds
an imaging system which combined two types of sensors namely optical sensors and
electrodynamic sensors. The optical sensors consisted of two halogen bulbs acting as
light sources and eight photodiodes acting as light receivers. In the case of the
electrodynamic sensors, eight electrodes were utilized. These sensors complement each
other. The images from both sensors can be analyzed to determine the precise
distribution of objects in the pipe. The sensors are suitably arranged around an 80mm x
80mm x 40mm transparent square pipe placed in a vertical manner. The sensors are
connected to signal conditioning circuits which are then linked to a data acquisition
system (DAS). The DAS is then connected to a computer. Inside the computer, a linear
back projection algorithm manipulates the data and then displayed the reconstruction
concentration profiles of the flow in the pipe. Several experiments were carried out and
the results showed that the system can accurately provide the images of the flow
components inside the pipe.