Перегляд за Автор "Vovna, O. V."

Зараз показуємо 1 - 2 з 2

Methods of improving technical and functional characteristics of serial budget microprocessor platforms
(International Information and Engineering Technology Association (IIETA), 2022) Lebediev, V. A.; Laktionov, I. S.; Vovna, O. V.; Kabanets, M. M.; Sahaida, P. I.; Dobrovolska, L. O.; Сагайда, П. І.
The relevance of the research is due to the fact that one of the prerequisites for the implementation of Internet of things and Wireless sensor network technologies is the reliable operation of the involved information and measurement systems as parts of the automation and digitalization systems on the rights of subsystems. Thus, the main purpose of the article is to substantiate scientific approaches to increasing the reliability of budget serial microcontroller boards as parts of information and measurement systems by developing methods of improving their technical and functional characteristics. Basic research methods are: methods of critical analysis and logical generalization; methods of computerized monitoring of electrical parameters; methods of experiment planning; methods of computer analysis of measurement results; approaches to experimental testing of information and measuring equipment. The main results of the article are as follows: the current state of scientific research and practical developments on ways to improve the technical and functional characteristics of microprocessor platforms has been analysed; the stabilization characteristics of the output voltage of the microprocessor platform have been investigated; the temperature dependences of the microcontroller at different denominations and types of load have been obtained; the priority areas for further research have been substantiated.
Study of metrological characteristics of low-cost digital temperature sensors for greenhouse conditions
(Faculty of Technical Sciences, Čačak, 2020) Vovna, O. V.; Laktionov, I. S.; Koyfman, O. O.; Stashkevych, I. I.; Lebediev, V. A.; Койфман, О. О.
The article focuses on the relevant scientific and applied problem of assessing and analyzing the metrological characteristics of available digital temperature sensors for greenhouse conditions. The hardware and software implementation of the microprocessor system for obtaining calibration characteristics and evaluating the accuracy and performance of temperature sensors for the physical media under greenhouse conditions is studied. A particular type of linear calibration equation for the temperature sensors under study is established. The values of systematic absolute measurement deviations of temperature sensors DS18B20, SHT11, SHT21, BMP180, BME280 and DHT22 are experimentally obtained. Recommendations on improving the accuracy of temperature information and temperature measuring systems under greenhouse conditions are given. The perspective areas of the research on metrological provision of modern means of automatic monitoring and temperature control in industrial greenhouses are substantiated.