Issue №: 2 (129)
The journal solves the problems of creation and improvement of machinery and technologies for agriculture: 131 - Applied Mechanics, 132 - Materials Science, 133 - Industrial Engineering, 141 - Power Engineering, Electrical Engineering and Electromechanics, 208 - Agricultural Engineering.
STUDY OF THE METROLOGICAL CHARACTERISTICS OF A FLOW-TYPE MILK ACIDITY ANALYZER FOR MILKING EQUIPMENT
Elchyn ALIIEV – Doctor of Technical Sciences, Senior Researcher, Professor of the Department of Technical Systems Engineering of Dnipro State Agrarian and Economic University (St. S. Efremova, 25, Dnipro, Ukraine, 49000, e-mail: aliev@meta.ua, https://orcid.org/0000-0003-4006-8803).
Volodymyr GOVORUKHA – Doctor of Physical and Mathematical Sciences, Professor, Head of the Department of Higher Mathematics, Physics and General Engineering Disciplines of Dnipro State Agrarian and Economic University (St. S. Efremova, 25, Dnipro, Ukraine, 49000, e-mail: hovorukha.v.b@dsau.dp.ua, https://orcid.org/0000-0002-0936-9272).
Oleksandr PIVOVAROV – Doctor of Technical Sciences, Professor, Professor of the Department of Food Technologies of Dnipro State Agrarian and Economic University (St. S. Efremova, 25, Dnipro, Ukraine, 49000, e-mail: pivovarov.o.a@dsau.dp.ua, https://orcid.org/0000-0003-0520-171X).
Valentyn YEFIMOV – Candidate of Veterinary Sciences, Associate professor, Associate professor of the Department of Physiology, Biochemistry of Animals and Laboratory Diagnostics of Dnipro State Agrarian and Economic University (St. S. Efremova, 25, Dnipro, Ukraine, 49000, e-mail: yefimov.v.h@dsau.dp.ua, https://orcid.org/0000-0002-4286-8567).
The paper presents the results of a study on the metrological characteristics of a flow-type milk acidity analyzer designed for integration into milking equipment to enable continuous real-time monitoring of raw milk quality. The relevance of this research is driven by the needs of modern livestock farming for the implementation of digital solutions within the framework of the Smart Farming concept. Milk acidity is a key indicator reflecting the microbiological status, freshness, and suitability of milk for processing, and its timely control allows for the prompt detection of hygienic violations during milking or early signs of animal diseases.
The proposed design of the flow analyzer is based on the ionometric method for measuring pH using a glass pH-selective electrode, a reference electrode, and a DS18B20 digital temperature sensor. The measuring unit is built on an ATMega16 microcontroller, integrated with a TL082 operational amplifier, which ensures high-precision measurement of the electrode system potentials. Signal processing and measurement control are implemented via PC software, which also provides electrode calibration, acidity calculation in pH and °T units, and digital and graphical visualization of results.
To determine the metrological characteristics of the analyzer, comparative measurements were carried out using a laboratory-grade pH meter S20 (Mettler Toledo) in buffer solutions with known pH values. It was established that the electrode response is linear with a slope of 59.62 mV/pH (theoretical value – 59.16 mV/pH), the measurement range is 1.68–9.18 pH, the signal dispersion is 3.00 mV², resolution – 0.01 pH, and the signal stabilization time – up to 25 seconds. The average deviation of the results does not exceed ±0.03 pH, which confirms compliance with the requirements for operational acidity monitoring in flow conditions.
The developed analyzer is competitive in terms of key metrological parameters and has strong potential for industrial application. Further research will focus on the implementation of automatic interpretation algorithms based on processing standards, as well as adaptation of the device to farms of various scales.
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About journal
The magazine "Engineering, Energy, Transport AIC" is included in the list of scientific professional editions of Ukraine on technical sciences
(Category "Б", Order of the Ministry of Education and Science of Ukraine dated 02.07.2020 №886)
According to the decision of National Council of Television and Radio Broadcasting of Ukraine from 25.04.2024 No. 1337 the scientific journal «Engineering, Energy, Transport AIC» has the ID of the Media R30-05173.
The journal "Engineering, Energy, Transport AIC" is indexed according to the following databases and catalogs:
Certificate of state registration of mass media: No. 21906-11806 P dated 03/12/2016.
Founder of the journal: Vinnytsia National Agrarian University
Type of publication: journal
Kind of publication: scientific
Publication status: domestic
Year of foundation: 1997
Periodicity: 4 times per year
Volume: 18-20 conv. print. sheet (А4)
ISSN: 2520-6168 (print version), (online version)
Language of publication: (mixed languages) Ukrainian, English
The sphere of distribution and category of readers: national, foreign, faculty, scientists, entrepreneurs.
The periodical edition is included to the List of scientific professional publications of Ukraine on technical sciences, approved by order of the Ministry of Education and Science of Ukraine in 05.16.2016, No. 515.
The journal "Engineering, Energy, Transport AIC" is included in the "Catalog of Ukrainian Publications".
Subscription to the journal can be issued in each post office. The subscription index is 99720.
Technology, energy, agriculture transport AIC is a scholarly professional journal with a long-standing history and stable academic tradition, reflecting the evolution of engineering and technical sciences within the agro-industrial sector of Ukraine.
The journal was founded in 1997 under the title Bulletin of Vinnytsia State Agricultural Institute. According to the Resolution of the Presidium of the Higher Attestation Commission of Ukraine dated September 11, 1997, the publication obtained the status of a professional scientific journal, which enabled the publication of the main results of doctoral and candidate dissertations in technical sciences. From its inception, the journal positioned itself as an academic platform for addressing current issues of mechanization, electrification, and technical support of agricultural production.
During 2001–2014, the journal was published under the title Proceedings of Vinnytsia National Agrarian University. Series: Technical Sciences (State Registration Certificate of Print Media KV No. 16644-5116 PR dated April 30, 2010). Throughout this period, a systematic approach to the selection and peer review of scientific manuscripts was established, the thematic scope of publications was expanded, and continuity of scientific directions as well as the development of sectoral engineering schools was ensured.
Since 2015, the journal has been published under its current title, Technology, energy, agriculture transport AIC (State Registration Certificate No. 21906-11806 R dated March 12, 2016). The change of title reflected the expansion of the journal’s thematic coverage and its orientation toward interdisciplinary research in mechanical engineering, energy systems, electrical engineering, transport technologies, automation, and digital solutions for the agro-industrial complex.
The journal consistently adheres to the principles of open science. All published materials are distributed under the Creative Commons Attribution 4.0 International License (CC BY 4.0), ensuring open access to research results provided proper attribution to the authors and the original publication is maintained.
At present, Technology, energy, agriculture transport AIC is an authoritative professional scientific journal (Category B), providing a platform for the publication of fundamental and applied research results, promoting the integration of education, science, and industry, and contributing to the advancement of engineering and technological support of the agro-industrial complex of Ukraine.
