Electrical impedance tomography systems based on voltage drive.
At the ESAT-MICAS research facility in Leuven, several EIT systems have been designed and realised. The latest hardware set-up makes use of a PC to control the data collection and to reconstruct the images. A voltage drive strategy and no common-mode feedback are some of its specific characteristics. The function-generator produces signals with a frequency between 10 and 100 kHz, so multifrequency images can also be produced. Static images have already been obtained and (semi-)real time imaging is possible with our latest mark IV system. This system has 16 bit analogue-to-digital convertors and is capable of taking 50 x 10(3) samples/s.
Sansen
W
W
KU Leuven, Elektrotechniek, ESAT-MICAS, Belgium.
Geeraerts
B
B
Van Petegem
W
W
Steyaert
M
M
D004553:Electric Conductivity; D006801:Humans; D014054:Tomography / Q000379:methods*