Description
9
The electronic unit is supplied by regulated power supply through USB interface, it
has double isolation and
СF type applied parts according to IEC 60601-1:2012
(AAMI/ANSI ES 60601-1:2005/(R2012) and A1:2012 and A2:2010/(R)2012, EN
60601-1:2006/A1:2013).
1.2. Principle of Operation
The principle of operation is based on the acquisition and input of brain biopotentials
and other physiological signals into PC for the analysis of brain electrical activity tak-
ing into account the impact of the other physiological signals.
The system includes the electronic unit that records EEG signals and other physiolog-
ical signals by polygraphic channel, amplify them, convert into digital code and trans-
mitting them to the PC.
The block diagram of the system is shown in Fig. 1.
Fig. 1. The
Neuron-Spectrum-1/V
system.
Biopotentials from the electrodes are amplified and digitized by means of the analog-
digital converter (ADC) and multiplexer (MPX) under the control of the processor PU1;
then they are transmitted to the USB processor through the optrons of galvanic isola-
tion.
The processor PU1 of the amplifier module controls the modes of measurement, cali-
bration, impedance and internal diagnostics.
The power supply of the amplifier module is performed through the electrically isolated
DC converter (SU1).
The processor PU2 controls the stimulus duration of photic stimulator and it also con-
trols LEDs to indicate impedance.
