FPGA Based Excitation Source in Biomedical Electrical Impedance Tomography System

Abstract:

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An excitation source for biomedical electrical impedance tomography system based on FPGA is designed and implemented with 33 KHz bandwidth and adjustable phases. Codes are programmed with PicoBlaze instructions by Notepad++, and compiled to user programs by KCPSM3 assembler. Digital-analog conversion is carried out in interruption subroutine, the output digital signals are sampled at the setting frequency and filtered by a second-order Butterworth low-pass filter. The proposed method offers a novel effective and feasible approach to satisfy the requirements of excitation source in bioelectrical impedance tomography system.

Info:

Periodical:

Edited by:

Zhixiang Hou

Pages:

537-540

DOI:

10.4028/www.scientific.net/AMM.48-49.537

Citation:

X. Y. Chen and J. N. Wu, "FPGA Based Excitation Source in Biomedical Electrical Impedance Tomography System", Applied Mechanics and Materials, Vols. 48-49, pp. 537-540, 2011

Online since:

February 2011

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Price:

$35.00

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