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1Simulation modeling of multiple scattering media to optimize the geometry of nephelometric sensors in agriculture
M.E. Astashev1'2*, D.N. Ignatenko1, A.V. Shkirin1, S.V. Gudkov1
1-Prokhorov General Physics Institute of the Russian Academy of Sciences, 38 Vavilova St., 119991 Moscow,
Russia
2- Institute of Cellular Biophysics, FRC PSCBR, Russian Academy of Sciences, 3 Institutskaya St., 142290
Pushchino, Russia
The use of nephelometric sensors for quantitative analysis of the composition of milk, its derivatives and other livestock products allows us to solve the problem of on-line monitoring of technological processes at all stages of the production [1]. Nephelometric sensors are relatively simple, cheap, reliable, and allow various designs and geometry that meet the requirements of compatibility of construction materials to food products. The problem is the lack of a mathematical description of the interaction of the optical range electromagnetic radiation with a multiply scattering medium, which makes it possible to predict with sufficient accuracy the result of this interaction in a system with an arbitrary cell geometry, location of radiation sources and receivers. We have proposed and studied a simple simulation model for the distribution of light power of a point source of radiation in a cell of arbitrary shape. At its core, the model represents a cellular automaton with simple rules for the interaction of neighboring cells, simulating the process of radiation redistribution during a single act of interaction of radiation with scattering particles, which makes it possible to use the results of scatterometric measurements of highly dilute suspensions, with the formation of the Muller matrix, to set parameters when modeling a highly scattering medium. We have obtained a satisfactory agreement between the simulation results and the results of measuring the scattering process in a nephelometric sensor with cylindrical geometry we had constructed before [2]; so we have obtained light scattering indicatrices similar to the real sensor. Scattering assessments were also carried out in systems with linear geometry of receivers and transmitters. These studies are of interest in the future of developing sensors for transport systems for milk and its derivatives with pipelines of complex geometry.
This work was supported by a grant of the Ministry of Science and Higher Education of the Russian Federation (075-15-2022-315) for the organization and development of a World-class research center "Photonics".
[1] S.V. Gudkov, R.M. Sarimov, M.E. Astashev, R.Y. Pishchalnikov, D.V. Yanykin, A.V. Simakin, A.V. Shkirin, D.A. Serov, E.M. Konchekov, o. Gusein-zade Namik Guseynaga, V.N. Lednev, M.Y. Grishin, P. A. Sdvizhenskii, S.M. Pershin, A.F. Bunkin, M.K. Ashurov, A.G. Aksenov, N.O. Chilingaryan, I.G. Smirnov, D.Y. Pavkin, D.O. Hort, M.N. Moskovskii, A.V. Sibirev, Y.P. Lobachevsky, A.S. Dorokhov, A.Y. Izmailov, Modern physical methods and technologies in agriculture, Physics-Uspekhi 67(02) 194-210, (2023).
[2] A.V. Shkirin, M.E. Astashev, D.N. Ignatenko, N.V. Suyazov, S.N. Chirikov, V.V. Kirsanov, D.Y. Pavkin, Y.P. Lobachevsky, S.V. Gudkov, A Monoblock Light-Scattering Milk Fat Percentage and Somatic Cell Count Sensor for Use in Milking Systems, Sensors 23(20) (2023).
