DISTRIBUTED SYSTEM FOR MONITORING THE TECHNICAL STATE OF AN ELECTRIC ENCEPHALOGRAPH
BASED ON A FUNCTIONAL GENERATOR 

Dmitry Yu. Ketov Senior lecturer, sub-department of biotechnical systems and technologies, Volgograd State Medical University (1 Pavshikh Bortsov square, Volgograd, Russia) ya_st@bk.ru
Alexei I. Nefed’ev Doctor of technical sciences, professor, professor of sub-department of electrical engineering, Volgograd State Technical University (28 V.I. Lenin avenue, Volgograd, Russia) nefediev@rambler.ru

 621.3.089.62

 10.21685/2307-5538-2021-2-2

Background. During the operation of electroencephalographs, the problem of monitoring the technical state of this type of equipment without interrupting it from the operation process often arises. Thus, an urgent task is the development of a distributed measuring system for monitoring the technical condition of electroencephalographs.
Materials and methods. At present, all medical measuring devices, for example, electrocardiographs, electroencephalographs, are based on a computer (personal computer, microcontroller). The computational potential of such devices is usually not fully used, which makes it possible to implement specialized verification and calibration algorithms, or use them in test benches. The novelty of the approach lies in the use of a functional generator as part of a distributed measuring system. 
Results. To control the technical state of the electroencephalograph, a distributed measuring system based on a functional DDS generator was developed, which allows the formation of specialized signals of various shapes and durations. 
Conclusion. The functional DDS generator, working as part of a distributed measuring system, allows testing with the required frequency, and with a flexible maintenance schedule.

electroencephalograph, technical condition monitoring, DDS-generator, signal generation, test signal, signal model