Title :
Micro-controller based active electrodes for impedance tomography
Author :
Guardo, R. ; Boulay, C. ; Provost, B. ; Bohsina, D. ; Mallette, S.
Author_Institution :
Inst. de Genie Biomed., Ecole Polytech. de Montreal, Que., Canada
Abstract :
An active electrode circuit for EIT is described. The circuit uses a micro-controller to implement a simple protocol for communicating with the data-acquisition system. This allows the active electrode to obtain configuration data (address of the electrode and number of electrodes present) from which it can determine, algorithmically, the function (current source/sink, voltage follower/inverter, disconnected) it is to perform at each step of the data acquisition sequence
Keywords :
biomedical electronics; electric impedance imaging; microcontrollers; active electrode circuit; algorithmic determination; configuration data; current sink; current source; data acquisition sequence; electrode address; electrodes number; impedance tomography electronics; medical diagnostic imaging; microcontroller based active electrodes; voltage follower; voltage inverter; Biomedical electrodes; Circuits; Control systems; Data acquisition; Electrodes; Impedance; Inverters; Pins; Power supplies; Protocols; Switches; Tomography; Voltage;
Conference_Titel :
Engineering in Medicine and Biology Society, 1994. Engineering Advances: New Opportunities for Biomedical Engineers. Proceedings of the 16th Annual International Conference of the IEEE
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-2050-6
DOI :
10.1109/IEMBS.1994.411911
