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Fire–Flame Imaging Using Electrical Capacitance Tomography

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Ciri–ciri sifat pengukuran tomografik yang khusus telah terbukti dengan keupayaannya untuk memisit keadaan dinamik suatu proses dalam satu unit pengoperasian seperti dalam kebuk atau alat pengangkut tanpa memberi sebarang gangguan kepada proses tersebut. Proses Tomografi Kapasitan (Electrical Capacitance Tomography–ECT) merupakan teknik tidak intrusif untuk mengetahui taburan kandungan dalam paip dengan mengkaji perubahan ketelusan dielektrik bagi bahan yang terkandung dalam paip. Satu pengesan ECT 8 elektrod dengan pengaturcaraannya dalam Microsoft Visual Basic 6.0 telah dibinakan untuk menunjukkan paparan pengguna. Sistem ini berupaya mengetahui pembahagian api yang terbakar dalam sesuatu perkakas. Data daripada sistem perkakas akan diperolehi melalui satu unit pengawal dan dimasukkan dalam komputer untuk mendapatkan gambaran keratan rentas pembakaran api. Algoritma pembinaan semula imej (Image Reconstruction Algorithm) yang digunakan dalam projek ini adalah Unjuran Belakang Linear (Linear Back Projection LBP) yang konvensional tetapi efektif. Kata kunci: Proses Tomografi Kapasitan, pembahagian api yang terbakar, Unjuran Belakang Linear, tidak intrusif, Visual Basic The specific characteristic of tomographic measurement is its proven ability to interrogate the dynamic state of a process condition within a unit operation such as a mixing vessel or conveyor without interfering with the process itself. This is achieved using noninvasive sensors along a cross–sectional boundary of the process equipment. Electrical Capacitance Tomography (ECT) is a non–intrusive technique for obtaining information about the distribution of the contents of closed pipes by measuring variations in the dielectric permittivity of the material within the electrodes sensing region. An 8 electrode ECT sensor system with a graphical user interfacing (GUI) software programming has been developed by using Microsoft Visual Basic 6.0. This system can be used to investigate the distribution of fire flame inside the vessel. Data from the hardware system can be acquired directly to computer through a microcontroller control unit to provide the cross sectional image of the fire flame. Image reconstruction algorithm used in this project is the conventional, but effective Linear Back Projection (LBP). Key words: Electrical Capacitance Tomography, fire flame, Linear Back Projection, nonintrusive, Visual Basic
Title: Fire–Flame Imaging Using Electrical Capacitance Tomography
Description:
Ciri–ciri sifat pengukuran tomografik yang khusus telah terbukti dengan keupayaannya untuk memisit keadaan dinamik suatu proses dalam satu unit pengoperasian seperti dalam kebuk atau alat pengangkut tanpa memberi sebarang gangguan kepada proses tersebut.
Proses Tomografi Kapasitan (Electrical Capacitance Tomography–ECT) merupakan teknik tidak intrusif untuk mengetahui taburan kandungan dalam paip dengan mengkaji perubahan ketelusan dielektrik bagi bahan yang terkandung dalam paip.
Satu pengesan ECT 8 elektrod dengan pengaturcaraannya dalam Microsoft Visual Basic 6.
0 telah dibinakan untuk menunjukkan paparan pengguna.
Sistem ini berupaya mengetahui pembahagian api yang terbakar dalam sesuatu perkakas.
Data daripada sistem perkakas akan diperolehi melalui satu unit pengawal dan dimasukkan dalam komputer untuk mendapatkan gambaran keratan rentas pembakaran api.
Algoritma pembinaan semula imej (Image Reconstruction Algorithm) yang digunakan dalam projek ini adalah Unjuran Belakang Linear (Linear Back Projection LBP) yang konvensional tetapi efektif.
Kata kunci: Proses Tomografi Kapasitan, pembahagian api yang terbakar, Unjuran Belakang Linear, tidak intrusif, Visual Basic The specific characteristic of tomographic measurement is its proven ability to interrogate the dynamic state of a process condition within a unit operation such as a mixing vessel or conveyor without interfering with the process itself.
This is achieved using noninvasive sensors along a cross–sectional boundary of the process equipment.
Electrical Capacitance Tomography (ECT) is a non–intrusive technique for obtaining information about the distribution of the contents of closed pipes by measuring variations in the dielectric permittivity of the material within the electrodes sensing region.
An 8 electrode ECT sensor system with a graphical user interfacing (GUI) software programming has been developed by using Microsoft Visual Basic 6.
This system can be used to investigate the distribution of fire flame inside the vessel.
Data from the hardware system can be acquired directly to computer through a microcontroller control unit to provide the cross sectional image of the fire flame.
Image reconstruction algorithm used in this project is the conventional, but effective Linear Back Projection (LBP).
Key words: Electrical Capacitance Tomography, fire flame, Linear Back Projection, nonintrusive, Visual Basic.

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