Browsing Mohd Hafiz Fazalul Rahiman, Associate Professor Ir.Dr. by Title
Now showing items 16-35 of 69
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The hardware design technique for ultrasonic process tomography system
(International Frequency Sensor Association Publishing (IFSA), 2012-06)This paper describes a work carried out to design and development an ultrasonic process tomography system. The hardware design technique is of interest of this paper. A number of 32-ultrasonic transducers have been ... -
Hardware developments of an ultrasonic tomography measurement system
(International Frequency Sensors Association (IFSA), 2011-01)This research provides new technique in ultrasonic tomography by using ultrasonic transceivers instead of using separate transmitter-receiver pair. The numbers of sensors or transducers used to acquire data plays an important ... -
Hardware implementation of multiple fan beam projection technique in optical fibre process tomography
(Molecular Diversity Preservation International (MDPI), 2008-05)The main objective of this project is to implement the multiple fan beam projection technique using optical fibre sensors with the aim to achieve a high data acquisition rate. Multiple fan beam projection technique here ... -
Homogeneous and Non-homogeneous media indentification and circuitry design of multiphase Ultrasonic Tomography
(Universiti Malaysia Perlis, 2009-10-11)Multiphase flow characterization is an important task for monitoring, measuring or controlling industrial processes. This can be done by means of process tomography. The use of tomographic techniques has been used within ... -
Image fusion using fuzzy logic pixel fusion for dual modality tomography system
(Penerbit UTM Press, 2014)Process tomography has been widely investigated and developed over time. The aim of this method is to measure the cross-sectional distribution of multiphase flow parameters based on its sensing technique. These single ... -
Initial study on optical fiber array to produce particle size information for hydraulic process
(Springer Berlin Heidelberg, 2013-08)This paper presents the results of investigations carried out to determine the feasibility of using optical fibers to produce particle size information of hydraulic processes. The results have been obtained using a static ... -
An introduction of two differential excitation potentials technique in electrical capacitance tomography
(Elsevier B.V., 2012-06)The investigation of this work is to analyse the sensitivity distributions using single and two differential excitation potentials techniques in order to improve the situation of: (1) non-uniform sensitivity distribution; ... -
Jaundice assessement of newborn baby: A short review on Kramel’s Rule and magnetic induction spectroscopy
(Penerbit UTM Press, 2015-04)Jaundice is a yellow discolouration of white eyes (sclera), skin and mucous membrane which is clinically apparent when the level of serum bilirubin rises up to 5 mg/dl. Jaundice could cause abnormalities in the newborn ... -
Mathematical modelling of gas bubbles and oil droplets in liquid media using optical linear path projection
(Elsevier Ltd., 2010-05-05)This paper describes mathematical modelling of oil droplets and gas bubbles in water. The light sources that are discussed are visible light radiation and infrared radiation. Gas bubbles or oil droplets less than 1 mm ... -
Measurement of the content of water using light penetration
(Penerbit UTM Press, 2014)In this paper we use an electronic component to produce light which is applied in testing soft tissue penetration. We used bio tissue, a slice of apple, and non-bio tissue, paper. The voltage could be adjusted to brighten ... -
Modeling orthogonal and rectilinear mixed-modality projection of optical tomography for solid-particles concentration measurement
(Elsevier B. V., 2010-06)In optical tomography, light attenuation/scattering methods have been used to determine average solids concentrations in gas-solids flows. Derived from the Lambert-Beer law, the Mie theory forms the theoretical basis for ... -
Modelling ultrasonic sensor for gas bubble profiles characterization of chemical column
(Elsevier B.V., 2013)In this paper, we present a modelling and experimental work to characterize gas bubble profiles in chemical column using a pair of ultrasonic sensor. The gas bubble profiles from 2.90 mm to 7.50 mm diameter are of interest ... -
Multiphase ultrasonic tomography technique for homogeneous and Non-homogeneuos media identification
(Intel Tech Sdn. Bhd./Pac Tech Sdn. Bhd./Universiti Sains Malaysia (USM), 2009)Multiphase flow characterization is an important task for monitoring, measuring or controlling industrial processes. This can be done by means of process tomography. The use of tomographic techniques has been used within ... -
Novel adjacent criterion method for improving ultrasonic imaging spatial resolution
(Institute of Electrical and Electronics Engineers (IEEE), 2012)In this letter, we present a novel approach for improving spatial resolution in ultrasonic tomography. The proposed technique modifies a Back-projection (BP) algorithm in reconstructing tomography images. We used 32-ultrasonic ... -
Oil Contamination Detection System (OCDS)
(Malaysian Invention and Design Society (MINDS), 2007-05-18)Oil Contamination Detection System (OCDS) is a novel and cost effective invention for illegal oil and grease emissions monitoring. OCDS will be immersed partially in the water by using a float. -
Optical tomography hardware development for solid gas measurement using mixed projection
(Elsevier Ltd, 2013-10)The ability to implement fan beam projection in parallel view in an optical tomography setup is one of the novelties of this research. This design involves a sensor jig specifically designed for parallel applications that ... -
Optical tomography system based on charge-coupled device linear image sensors: Particle size measurement
(Elsevier B.V, 2011-08)This paper discussed an optical tomography system based on charge-coupled device (CCD) linear image sensors. The developed system consists of a lighting system, a measurement section and a data acquisition system. Four CCD ... -
Optical tomography system based on charge-coupled device linear image sensors: Particle size measurement
(Elsevier B.V., 2011-08)This paper discussed an optical tomography system based on charge-coupled device (CCD) linear image sensors. The developed system consists of a lighting system, a measurement section and a data acquisition system. Four CCD ... -
An optical tomography system using a digital signal processor
(Molecular Diversity Preservation International (MDPI), 2008-03)The use of a personal computer together with a Data Acquisition System (DAQ) as the processing tool in optical tomography systems has been the norm ever since the beginning of process tomography. However, advancements in ... -
Optical tomography system using digital signal processor: Velocity profile measurement
(Inderscience Enterprises Limited, 2009-06)The DSP system was customised to control the data acquisition process of 16 x 16 optical sensors array, arranged in parallel beam projection. The data collected was used to reconstruct the cross sectional image of the ...