Browsing by Author "Mohd Hafiz, Fazalul Rahiman"

Now showing items 21-36 of 36

    • Optical tomography system based on charge-coupled device linear image sensors: Particle size measurement 

      Mariani, Idroas; Ruzairi, Abdul Rahim; Mohd Hafiz, Fazalul Rahiman; M. N., Ibrahim (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 

      Ruzairi, Abdul Rahim; Chiam, Kok Thiam; Mohd Hafiz, Fazalul Rahiman (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 

      Ruzairi, Abdul Rahim; Chiam, Kok Thiam; Mohd Hafiz, Fazalul Rahiman; Yvette-Shan Li, Susiapan; Jayasuman, P. (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 ...

    • Optical tomography system using microprocessor and ethernet 

      Ruzairi, Abdul Rahim; Goh, Chiew Loon; Chan, Kok San; Pang, Jon Fea; Leong, Lai Chan; Mohd Hafiz, Fazalul Rahiman (Emerald Group Publishing Limited, 2010-01-01)
      Purpose: Owing to the high cost of data acquisition (DAQ) card in the market, the purpose of this paper is to develop a high speed, low-cost microprocessor and ethernet controller-based DAQ in optical tomography system. ...

    • Optical tomography system: Application of Charge Coupled Device (CCD) for solid and transparent objects detection 

      Juliza, Jamaludin; Ruzairi, Abdul Rahim; Herlina, Abdul Rahim; Mohd Hafiz, Fazalul Rahiman; Siti Zarina, Mohd Muji; Mohd Fahjumi, Jumaah; Naizatul Shima, Mohd Fadzil; Chan, Kok San; Green, R.G. (Penerbit UTM Press, 2016)
      This research presents an application of Charge Coupled Device (CCD) linear sensor and laser diode in an optical tomography system. These optoelectronic sensors are believed to detect solid objects rather than transparent ...

    • Optical tomography: A review on sensor array, projection arrangement and image reconstruction algorithm 

      Siti Zarina, Mohd. Muji; Ruzairi, Abdul Rahim; Mohd Hafiz, Fazalul Rahiman; Shafishuhaza, Sahlan; Mohd Fadzli, Abdul Shaib; Muhammad, Jaysuman; Elmy Johana, Mohamad (Kyushu Tokai University, 2011-07)
      This paper reviews previous research on sensor arrays, projection arrangements and image reconstruction algorithms of optical tomography for industrial processes. These include the review of sensor selection and projection ...

    • A review of application electrical resistance tomography for rooted herb tree detection 

      Syafiqah, Ishak; Mohd Hafiz, Fazalul Rahiman; Salman Sayyidi, Hamzah; Lean, Thiam Siow; Nur Atika, Mar Ali; Thomas, Tan Wan Kiat; Vernoon, Ang Wei Neng (Penerbit UTM Press, 2016)
      This paper presents the measurement strategy of Electrical Resistance Tomography (ERT) for a system using underground investigation and comparison with other application such as conducting vessel pipe and concrete. Measurement ...

    • Simulation of image fusion of dual modality (electrical capacitance and optical tomography) in solid/gas flow 

      Mohd Hafiz, Fazalul Rahiman; Rasif, Rasif; Ruzairi, Abd Rahim; Jaafar, Abdullah (Springer Verlag, 2010-03-27)
      This paper presents a novel method of combining dual modality electrical capacitance and optical tomography for applications in monitoring and investigating solid/gas flow. The objective of this method is to obtain a good ...

    • Simulation of the two-phase liquid – gas flow through ultrasonic transceivers application in ultrasonic tomography 

      Zulkarnay, Zakaria; Mohd Hafiz, Fazalul Rahiman; Ruzairi, Abdul Rahim (International Frequency Sensor Association (IFSA), 2010-01-29)
      In this paper, ultrasonic transmission mode tomography was used to visualize the two phase liquid/gas flow in a pipe/vessel. The sensing element consists of 8, 16 and 32 units ultrasonic transceivers were used to cover ...

    • Simulation on using cross-correlation technique for two-phase liquid/gas flow measurement for Ultrasonic Transmission Tomography 

      Nor Muzakkir, Nor Ayob; Sazali, Yaacob, Prof. Dr.; Zulkarnay, Zakaria; Mohd Hafiz, Fazalul Rahiman; Ruzairi, Abd Rahim (Institute of Electrical and Electronics Engineers (IEEE), 2010-05-21)
      Combining Ultrasonic Transmission Tomography (UTT) with the cross-correlation flow measurement technique can provide more information on the flow than usual. A simulated dual-plane UTT system for use on laboratory and ...

    • Single channel magnetic induction spectroscopy technique for fetal acidosis detection 

      Shazwani, Sarkawi; Zulkarnay, Zakaria; Jurimah, Abdul Jalil; Ibrahim, Balkhis; Mohamad Aliff, Adul Rahim; Nazahah, Mustafaa; Ruzairi, Abdul Rahim; Mohd Hafiz, Fazalul Rahiman; Zaridah, Shafie (Penerbit UTM Press, 2016)
      Current fetal acidosis diagnosis needs an invasive measurement which required a doctor to puncture fetal scalp to acquire blood pH. This method introduced risk to the fetal which fetal scalp may bruise and infected. This ...

    • Statistical time energy based damage detection in steel plates using artificial neural networks 

      Paulraj, Murugesa Pandiyan, Prof. Madya; Mohd Shukri, Abdul Majid; Sazali, Yaacob, Prof. Dr.; Mohd Hafiz, Fazalul Rahiman; Krishnan, R. P. (Institute of Electrical and Elctronics Engineering (IEEE), 2009-03-06)
      In this paper, a simple method for crack identification in steel plates based on statistical time energy is presented. A simple experimental procedure is also proposed to measure the vibration at different positions of a ...

    • Ultrasonic process tomographic imaging sensor: An approach utilising transceivers method 

      Mohd Hafiz, Fazalul Rahiman; Zulkarnay, Zakaria; Ruzairi, Abdul Rahim (Institute of Electrical and Electronics Engineering (IEEE), 2008-05-13)
      Direct analysis of the internal characteristics of process plant has become a widespread need in order to improve the design and operation of the equipment especially in liquid/gas two phase flows. In recent years, the ...

    • Ultrasonic tomography imaging for two-phase flow 

      Mohd Hafiz, Fazalul Rahiman; Ruzairi, Abdul Rahim; Mohd Hezri, Fazalul Rahiman; Mazidah, Tajjudin (Universiti Malaysia Perlis (UniMAP)Pejabat Timbalan Naib Canselor (Penyelidikan dan Inovasi), 2008-07)
      Real-time process monitoring is important in many areas of industry and scienti c research concerning liquid/gas two-phase ow, and is closely related to accurate measurement and control of hydrodynamic parameters such ...

    • Ultrasound processing circuitry for ultrasonic tomography 

      Nor Muzakkir, Nor Ayob; Mohd Hafiz, Fazalul Rahiman; Sazali, Yaacob; Ruzairi, Abdul Rahim (Universiti Malaysia Perlis, 2009-10-11)
      The development of an ultrasonic transmission tomography system is described. The system is intended for the imaging of two component flows (such as gas/water) inside pipes of industrial processes. Transmission-mode ...

    • Underwater ground mapping for flood disaster using ultrasonic sensor 

      Salman Sayyidi, Hamzaha; Mohd Hafiz, Fazalul Rahiman; Mohd Hajazi, Mustafa; Mohd Azrul, Amat; Lean Thiam, Siow; Vernoon, Ang Wei Neng; Thomas, Tan Wan Kiat; Syafiqah, Ishaka; Nur Atikah, Mat Alia (Penerbit UTM Press, 2016)
      Search and Rescue (SAR) team used dip stick to measure the water depth and identify the badly eroded area and a guide line will be placed to assist them. However, ground erosion is unpredictable coupled with unknown sizes ...