S.G. Gurzhin – Ph.D. (Eng.), Associate Professor, Department «Information-measuring and biomedical engineering», V.F. Utkin Ryazan State Radio Engineering University,  the Winner of the Lenin komsomol Prize in Science and Technology, Laureate of the Ryazan Region on Science and Technology and the Silver Medal n. a. Academician V.F. Utkin,  Honorary Worker of Higher Professional Education of the Russian Federation

E-mail: gurzhin@mail.ru

V.L. Nguen – Post-Graduate Student, Department «Information-measuring and biomedical engineering», V.F. Utkin Ryazan State Radio Engineering University

E-mail: nguyenvietlinh010992@gmail.com

A.V. Shuljakov – Senior Lecturer, Department «Information-measuring and biomedical engineering», V.F. Utkin Ryazan State Radio Engineering University

E-mail: shul_andr@mail.ru

Many topical issues of clinical practice are associated with the study of the human cardiovascular system. Widely used methods and tools that allow non-invasive control and measure the parameters of blood flow in the vessels. The method of photoplethysmography, based on the registration of the optical density of the tissue or substance under investigation, has become widespread due to a number of advantages. These include the high sensitivity and portability of the sensor, the information content of the parameters of the pulse wave signal, the efficiency of obtaining monitored indicators, and the safety of the used light radiation for the patient.

Since today a wide variety of photometric transducers are used in domestic medical diagnostics, produced by various companies and most often by foreign manufacturers, whose metrological characteristics are usually not fully represented in the documentation and thus need to be confirmed by the stated values of the parameters, carrying out their verification tests and metrological certification.

To ensure the above measures, with the classical approach, it may be necessary to create a special research methodology, precision, expensive equipment and considerable time resources. Such costs are not always feasible and justified.

Therefore, one of the alternative solutions could be the development of a measuring system, of which the personal computer is the hardware platform, and the LabVIEW graphical programming package is the software environment. The choice in favor of LabVIEW is due to the important advantages of the environment for managing the measurement process in automatic or interactive modes, an extensive set of functional libraries (general purpose and specialized) for processing, analyzing measurement information and high-quality presentation of results.

The aim of the work is to show the possibility of implementing metrological studies of photometric converters on the basis of standard, universal, general-available tools with high guaranteed characteristics.

The integration of tools will allow to automate the process of registering dynamic signals, measuring informative parameters, calculating and evaluating significant indicators and errors, as well as flexibly (programmatically) correcting or changing the test method and increasing the functions performed.

Software tools in the form of a virtual device in the LabVIEW environment significantly increase the control flexibility, quality, efficiency and visibility of the results presented, as well as expand the functionality of the system.

These advantages will contribute to the creation of new biomedical photometric sensors for detecting the shape of diagnostic signals with guaranteed accuracy and checking the metrological characteristics of existing sensors.

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