Ultrasonic Tomography System For Liquid/Gas Flow: Frame Rate Comparison Between Visual Basic And Visual C++ Programming

2006 ◽  
Vol 44 (1) ◽  
Author(s):  
Ruzairi Abdul Rahim ◽  
Norkharziana Mohd. Nayan ◽  
Mohd. Hafiz Fazalul Rahiman
Keyword(s):  
Gas Flow ◽  
Visual Basic ◽  
Frame Rate ◽  
Ultrasonic Tomography ◽  
Tomography System ◽  
C Programming ◽  
Rate Comparison

Ultrasonic Tomography System In Liquid – Gas Flow Monitoring

2012 ◽  
Author(s):  
Jaysuman Pusppanathan ◽  
Ruzairi Abdul Rahim ◽  
Mohd Hafiz Fazalul Rahiman
Keyword(s):  
Flow Regime ◽  
Gas Flow ◽  
Ultrasonic Transducer ◽  
Ultrasonic Tomography ◽  
Reconstruction Algorithms ◽  
Two Phase ◽  
Flow Monitoring ◽  
Tomography System ◽  
Electronic Measurement ◽  
Ultrasonic Transmitter

Suatu kajian proses tomografi ultrasonik telah dijalankan untuk mengenal pasti dan mengukur pengaliran dua fasa iaitu campuran fasa cecair dan gas. Sistem ini telah dibina menggunakan lapan unit penderia ultrasonik mempunyai dua fungsi (pemancar atau penerima isyarat) pada suatu masa. Berbanding dengan penggunaan penderia ultrasonik yang lazim digunakan, penderia ultrasonik dwi – fungsi ini mampu menberi pengukuran dan imej tomogram yang sama kualitinya malah ia mempunyai lebih banyak kelebihan dan lebih tepat. Disebabkan beberapa kebatasan penggunaan penderia ultrasonik yang berfungsi secara individu, kajian ini dijalankan supaya tidak mengganggu proses pengaliran aliran dalaman paip dan sebagai satu pendekatan alternitif menggunakan penderia ultrasonik dwi – fungsi tersebut. Dengan lapan unit penderia ini, litar – litar pengukuran, sistem perolehan data dan algoritma pembentukan imej yang bersesuaian telah direalisasikan. Keputusan yang diperolehi hasil dari kajian ini menunjukkan tomografi ultrasonik menggunakan penderia dwi – fungsi berjaya memaparkan ciri – ciri dalamaan bagi pengaliran dua fasa ini iaitu cecair dan gas. Sistem sebegini sangat berguna dalam bidang campuran bahan cecair kimia atau penghantaran cecair di kawasan luar pantai. Kata kunci: Ultrasonik; tomografi; sistem pengaliran; cecair dan gas; penderia ultrasonik This research was carried out to measure two phase liquid – gas flow regime by using a dual functionality ultrasonic transducer. Comparing to the common separated transmitter – receiver ultrasonic pairs transducer, using dual functionality ultrasonic transceiver is capable to produce same measurement results hence further improvised and contributes to the hardware design improvement and system accuracy. Due to the disadvantages and the limitations of the separated ultrasonic transmitter – receiver pair, therefore this thesis presents a non–invasive of ultrasonic tomography system using ultrasonic transceiver as an alternative approach. By using 8 units of ultrasonic transceivers, the electronic measurement circuits, the data acquisition system and suitable image reconstruction algorithms, the measurement of a liquid/gas flow was realized. The system is capable of visualizing the internal characteristics of liquid and gas flow and provides the concentration profile for the corresponding liquid and gas flow. This system is useful in monitoring of liquid/gas flow in flow regime, chemical mixture transportation or fluid transportation at sub sea oil fields. Key words: Ultrasonic; tomography; flow system; liquid gas; transceiver

A Novel Electrical Cpacitance Sensor Design For Dual Modality Tomography Multiphase Measurement

2013 ◽  
Vol 64 (5) ◽  
Author(s):  
Muhammad Jaysuman Pusppanathan ◽  
Fazlul Rahman Yunus ◽  
Nor Muzakkir Nor Ayob ◽  
Ruzairi Abdul Rahim ◽  
Fatin Aliah Phang ◽  
...  
Keyword(s):  
Multiphase Flow ◽  
Flow Measurement ◽  
Ultrasonic Tomography ◽  
Pipe Surface ◽  
Dual Modality ◽  
Tomography System ◽  
Imaging Result ◽  
Process Tomography ◽  
Single Sensor ◽  
Capacitance Tomography

Electrical capacitance tomography (ECT) is one of process tomography technique which is developed rapidly in recent years. ECT is an imaging technique to obtain the internal permittivity distribution of a vessel or pipe by using capacitance electrodes sensor. This method has been integrated with ultrasonic tomography as multimodality system to perform multiphase flow measurement such as crude oil separation and oil process industry. In the present paper, a novel type of ECT sensor was developed using copper FR4 material. The electrode sensors can be flexibly bend or curve to fit the pipe surface for optimum measurement. Thus, every single sensor strip is designed to be functioned independently. Such system has lower sensing capability in the central of the sensing area which often contributes to poor imaging result. This problem can be overcome by combining the ECT with ultrasonic tomography to form a dual modality tomography system. By implementing the new ECT sensor, multiphase flow measurement image results can be achieved. The reconstructed image results are presented in this paper.

A Review on Ultrasonic Process Tomography System

2014 ◽  
Vol 70 (3) ◽  
Author(s):  
Sallehuddin Ibrahim ◽  
Mohd Amri Md Yunus ◽  
Mohd Taufiq Md Khairi ◽  
Mahdi Faramarzi
Keyword(s):  
Ultrasonic Tomography ◽  
Medical Field ◽  
Tomography System ◽  
Process Tomography ◽  
Ultrasonic Process ◽  
Process Vessel

The advantage of using a tomography system is that it provides visualization of component distributions inside a pipe or a process vessel. Tomography is widely used in the medical field. Due to its non-intrusive nature, tomography has caught the interest of various researchers in process applications. There is an extensive research using ultrasonic tomography for various applications. This paper is a review which expounds the principles of ultrasonic tomography systems, the hardware, and the software used in such systems.

Image Reconstruction Algorithms For Ultrasonic Tomography

2012 ◽  
Author(s):  
Mohd Hafiz Fazalul Rahiman ◽  
Ruzairi Abdul Rahim ◽  
Herlina Abdul Rahim
Keyword(s):  
Image Reconstruction ◽  
Reconstruction Algorithm ◽  
Ultrasonic Tomography ◽  
Back Projection ◽  
Reconstruction Algorithms ◽  
Tomography System ◽  
Tomography Image ◽  
Real Objects ◽  
Linear Back Projection ◽  
Image Reconstruction Algorithms

Kertas ini membincangkan algoritma pembangunan imej bagi kegunaan dalam tomografi ultrasonik. Terdapat tiga jenis algoritma pembangunan iaitu Linear Back Projection, Hybrid Reconstruction dan Hybrid Binary Reconstruction. Algoritma tersebut telah diuji ke atas sistem tomografi ultrasonik berdasarkan kepada beberapa bayang yang telah dikenalpasti dan objek–objek sebenar. Prestasi algoritma tersebut telah di analisa dan bincangkan pada bahagian akhir kertas ini. Kata kunci: Algoritma pembangunan; tomografi ultrasonic; pemprosesan image; mabuk This paper presented image reconstruction algorithms for use in ultrasonic tomography. There are three types of reconstruction algorithms namely Linear Back Projection, Hybrid Reconstruction and Hybrid Binary Reconstruction. The algorithms have been evaluated on ultrasonic tomography system based on several known phantoms and real objects. The performance of the algorithms have been analysed and discussed at the end of the paper. Key words: Reconstruction algorithm; ultrasonic tomography; image processing

Investigation of Auto-Ignition of a Pulsed Methane Jet in Vitiated Air Using High-Speed Imaging Techniques

2010 ◽  
Vol 133 (2) ◽  
Author(s):  
W. Meier ◽  
I. Boxx ◽  
C. Arndt ◽  
M. Gamba ◽  
N. Clemens
Keyword(s):  
High Speed ◽  
Gas Flow ◽  
Imaging Techniques ◽  
Frame Rate ◽  
Experimental Arrangement ◽  
Single Shot ◽  
Exhaust Gas ◽  
High Speed Imaging ◽  
Auto Ignition ◽  
Flow Field Characteristics

An experimental arrangement for the investigation of auto-ignition of a pulsed CH4 jet in a coflow of hot exhaust gas from a laminar lean premixed H2/air flame at atmospheric pressure is presented. The ignition events were captured by high-speed imaging of the OH∗ chemiluminescence associated with the igniting flame kernels at a frame rate of 5 kHz. The flow-field characteristics were determined by high-speed particle image velocimetry and Schlieren images. Furthermore, high-speed imaging of laser-induced fluorescence of OH was applied to visualize the exhaust gas flow and the ignition events. Auto-ignition was observed to occur at the periphery of the CH4 jet with high reproducibility in different runs concerning time and location. In each measurement run, several hundred consecutive single shot images were recorded from which sample images are presented. The main goals of the study are the presentation of the experimental arrangement and the high-speed measuring systems and a characterization of the auto-ignition events occurring in this system.

High frame-rate MR-guided near-infrared tomography system to monitor breast hemodynamics

2011 ◽  
Author(s):  
Zhiqiu Li ◽  
Shudong Jiang ◽  
Venkataramanan Krishnaswamy ◽  
Scott C. Davis ◽  
Subhadra Srinivasan ◽  
...  
Keyword(s):  
Near Infrared ◽  
Frame Rate ◽  
High Frame Rate ◽  
Tomography System ◽  
Infrared Tomography

scholarly journals Design Consideration for Front-End System in Ultrasonic Tomography

2013 ◽  
Vol 64 (5) ◽  
Author(s):  
Nor Muzakkir Nor Ayob ◽  
Muhammad Jaysuman Pusppanathan ◽  
Ruzairi Abdul Rahim ◽  
Mohd Hafiz Fazalul Rahiman ◽  
Fazlul Rahman Mohd Yunu ◽  
...  
Keyword(s):  
Measurement Errors ◽  
Ultrasonic Transducers ◽  
Ultrasonic Tomography ◽  
Tomography System ◽  
Front End ◽  
Hardware Development ◽  
Important Concern ◽  
Process Tomography ◽  
Electronic Measurement ◽  
Further Development

The hardware development of the ultrasonic tomography comprises three main parts; the sensor unit, electronic measurement circuits combined with a data acquisition system and finally the display unit. The research done is focusing on the design considerations for the sensory unit which is also regarded as the front-end system. This part is an important concern for researchers in the field of ultrasonic, particularly for process tomography. Ultrasonic transducers are very sensitive piezo-mechanical component and as such its installation to complete the front-end system have to be properly configured. Many considerations and parameters that are well planned will promise significant impact on the sensor readings. Measurement errors can occur due to many aspects, thus this research aims to minimize such errors to be useful for further development in ultrasonic tomography system design.

Ultrasonic Tomography System: Optimizing the Frequency in a Metal Pipe Conveyor

2013 ◽  
Vol 284-287 ◽  
pp. 572-576
Author(s):  
Javad Abbaszadeh ◽  
Herlina Abdul Rahim ◽  
Ruzairi Abdul Rahim ◽  
Sahar Sarafi
Keyword(s):  
Wave Propagation ◽  
Ultrasonic Wave ◽  
High Efficiency ◽  
Dominant Role ◽  
Guided Wave ◽  
Ultrasonic Tomography ◽  
Ultrasonic Wave Propagation ◽  
Finite Element Software ◽  
Metal Pipe ◽  
Tomography System

Ultrasonic Tomography has a dominant role in industry to generate cross sectional images of any object. In this paper, method of designing an Ultrasonic Tomography System due to the propagation manner of ultrasonic wave inside the various materials is investigated. The correct method of mounting of Ultrasonic sensors and behavior of the ultrasonic wave propagation in different layers has been simulated by the use of finite element software (COMSOL Multiphysics 3.5). To increase in practical nondestructive evaluation and inspection, we should increase our understanding of the basic physics and wave mechanics associated with guided wave inspection. A suitable ultrasonic sensor base on its efficiency and satisfying the simulation criteria is found and practically implemented on the surface of metal pipe. it is done by estimating the resonance frequency of sensor due to manner of ultrasonic wave propagation in different frequencies shown in simulation results. The proposed optimum frequency for the applied sensors is 40 kHz in which is tested practically and experimental results prove the high efficiency of this system.

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