Yu.M. Kulunich1, S.A. Shuharev2, M.Yu. Kulunich3

1–3 Far Eastern State University of Railways (DVGUPS) (Khabarovsk, Russia)
1 kulinitsch@rambler.ru, 2 shuharevsa@gmail.com, 3 kulinichmisha@gmail.com

The development of digital and microprocessor technology is finding wider and wider practical application in all branches of modern science and technology. The field of biomedical technologies is no exception, since in the context of an increasing level of cardiovascular diseases, the issues of diagnosis and timely treatment are becoming increasingly relevant. Currently, electrocardiography is the most common method of examining the work of the heart. The use of computer technology, which makes it possible to implement the most complex diagnostic algorithms, as well as the use of compact cardiogram imaging devices provide ample opportunities for timely and correct diagnosis. Various ways of compensating for the drift of the isoline in the cardiosignal are analyzed and one of the effective methods of improving the quality of the cardiogram is substantiated, which consists in compensating for the drift of the isoelectric line using interpolation splines. A cubic spline construction technique has been developed to improve the accuracy of cardiogram registration and facilitate correct diagnosis. A program for determining splines in the form of a cardiogram signal has been developed in the high-level C language, implemented in the STM32 microcontroller. A protocol for transmitting information from a microcontroller to an ILI9486 color LCD screen over an 8-bit parallel bus has been developed as a program code. In accordance with the adopted import substitution program, the results of the study can be used in the design and manufacture of inexpensive domestic electrocardiographs that correspond to Class 2 devices. The research results presented in the paper clearly showed that the production of medical equipment can be organized on the basis of universities that are not part of the healthcare structure.

Kulunich Yu.M., Shuharev S.A., Kulunich M.Yu. Compensation of the isoline drift in the electrocardiosignal // Biomedicine Radioengi­neering. 2026. V. 29. № 4. P. 36–46. DOI: https:// doi.org/10.18127/ j15604136-202604-04

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