Warsito P. Taruno

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This research investigates single excitation signal applied on ECVT (electrical capacitance volume tomography) data acquisition system (DAS). ECVT is one of tomography processes based on capacitance measurement. Excitation signals being used in the system are square and sine waves. Single wave excitation signal was injected into pair electrodes which would(More)
ECVT has been widely used in different fields including oil refinery systems, chemical processes, space shuttles and medicals. The technique generates a whole volumetric image from the measured capacitance of the region enclosed by the geometrically three-dimensional sensor. However, the data acquisition and data processing of the ECVT are done on separate(More)
In this research, we proposed a capacitance measurement circuit Electrical Capacitance Volume Tomography (ECVT) to perform three-dimensional image visualization. The ECVT system is consists of three main parts i.e. sensor, data acquisition system, and computer. Data acquisition system is composed of capacitance measurement circuit and microcontroller to(More)
This paper presents method to implement Linear Back Projection (LBP) algorithm in Field Programmable Gate Arrays (FPGA). Top-down approach has been adopted for the design of the hardware of LBP algorithm. The FPGA used is Xilinx Spartan 3A and the language used to design the hardware is VHSIC Hardware Description Language (VHDL). The final design is able to(More)
Electrical capacitance volume tomography (ECVT) system uses six switches in one channel with configuration resembling “T” letter, so it is called “T-switch”. The working scheme of the switch can be explained in four different modes of operation, i.e. excitation mode, detection mode, ground mode, and floating mode. This research describes the effect of(More)
The research proposes a design of 12-channel rotary sensor for electrical capacitance volume tomography (ECVT) toward improvement in image reconstruction result. Sensor was assembled by attaching motors at upper section to rotate in radial; also at side to move up and down. Effects of rotating and translating the sensor has been analyzed in comparison to(More)
In Electrical Capacitance Volume Tomography, the internal permittivity distribution of a region of interest has a nonlinear relationship with the measured capacitance. Most image reconstruction algorithms neglects the nonlinear characteristic and use instead a linearized sensitivity approach to solve the non-linear problem, affecting the accuracy of the(More)
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