1 / 9

Modifying Electrical Impedance Tomography System (3)

Modifying Electrical Impedance Tomography System (3). Presenter : Yu-Chun Hua Adviser : Dr. Ji-Jer Huang Date : 99.12.09. D. Boundary Potentials Measurements. A 1 mA, 50 kHz constant current signal is injected to the phantom boundary

kynthia-rose
Download Presentation

Modifying Electrical Impedance Tomography System (3)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Modifying Electrical ImpedanceTomographySystem(3) Presenter : Yu-Chun Hua Adviser : Dr. Ji-Jer Huang Date : 99.12.09

  2. D. Boundary Potentials Measurements A 1 mA, 50 kHz constant current signal isinjected to the phantom boundary The surface potentials developed aremeasured using neighboring methodof electrode switching protocol Boundary data measurement with practical biological phantom

  3. D. Boundary Potentials Measurements Boundary potentials are also measured for a phantom with and without extra water column above and below the electrode array level. The measured potential data are compared with the calculated potential data. Boundary data measurement with a phantom having extra water column above and below the electrode array level.

  4. Paper review(2) results The differential potential is calculated using our forward solver with the phantomspecifications provided by Ider et al Vds Curve Compared with Ider et al Data

  5. Paper review(2) results Vds: surface potential Vdm: measured data = differential potential CME: Common Mode Electrode CGE : Central Ground Electrode Vdm data with and with CGE after Calibration

  6. Materials and Methods System Block diagram

  7. Future works • Paper review • Build a hardwarehowland circuit • Modified EIT system (digital control)

  8. References [1]R. A. Stiz, P. Bertemes-Filho, A. Ramos, V. C. Vincence. “Wide Band Howland Bipolar Current Source using AGC Amplifier “IEEE LATIN AMERICA TRANSACTIONS, VOL. 7, NO. 5, SEPTEMBER 2009 [2]From: Tushar Kanti Bera and J. Nagaraju ﹐” A Simple Instrumentation Calibration Technique for Electrical Impedance Tomography (EIT) Using A 16-Electrode Phantom” 5th Annual IEEE Conference on Automation Science and Engineering Bangalore, India, August 22-25, 200

  9. Thank you for yourattention

More Related