Neurophysiologic and cardiac signals simulator based on microconverter

Abstract

This paper describes a microconverter-based electronic device developed to simulate auditory evoked potentials of short, middle and long latencies, ECG and electronystagmographic signals. The simulator reproduces real physiologic signals from sampled AEP and ECG waveforms instead of generating them based on equations. The main simulator part is the ADuC841 microconverter (single-cycle 20 MHz 8052 core, FLASH memory and two 12-bit DACs). Called SimPac I, the equipment is portable and easy to operate, being a worthy tool for calibration of AEP, ECG, ENG and VENG systems during manufacture and maintenance. It can also be used in the development and testing of DSP algorithms intended to filter and/or average the above mentioned signals. As result, examples of several waveforms generated by the SimPac I are shown. © 2008 Springer-Verlag.