No. 10

Abstracts. No. 10, 2021 year
 
ABSTRACTS
Velt I.D., Mikhailova Yu.V., Sudarikov V.K. (e-mail: agydel@gmail.com)
Magnetic flowmeters of liquid sodium in pipelines of fast sodium reactors

Magnetic flowmeters for pipelines of fast sodium reactors developed by NIITEPLOPRIBOR are described. Metrological and technical characteristics of flowmeters are given. It is noted that the use of a pulsed magnetic field makes it possible to separate the informative component of the signal from all interference of electromagnetic origin, the change of which in time is not a multiple of the frequency of change of the magnetic field of excitation, and, consequently, completely eliminate interference caused by industrial frequency and thermo-EMF. Due to this, the accuracy of flow measurement has significantly increased, and it has become possible to reduce the magnetic field in the channel by an order of magnitude. It is shown that when processing signals from several pairs of electrodes, it is possible to increase the accuracy of flow measurement. The physical basis of the measurement method and the design features of the device are considered.

Keywords: magnetic flow meter, fast sodium reactors, electromagnetic induction, magnetic Reynolds number, primary flow converter.

Lukasheva S.Yu., Zhuravleva Yu.A., Mikaeva A.S., Mikaeva S.A. (e-mail: sofia.lukasheva@mail.ru)
Algorithms of the adder operation

The article describes the assembled electronic multifunctional adder for electricity metering SEM-3. The authors present the technical characteristics, the device and the principle of its operation. The presented adder is designed to monitor and account for the consumption of electricity generation and power directly from consumers, as well as in automated centralized accounting and control systems, and is designed for round-the-clock operation.

Keywords: electronic adder, electric power, power, meter, assembly, device, operating principle.

Bogachev I.V. (e-mail: 010608@pnu.edu.ru)
Implementation of the principle of delayed accuracy in the measurement data transmission system

The article proposes and investigates a system for transmitting measurement data with an adaptive choice of parameters of an error-correcting code, which allows dynamically changing the number of bits of transmitted data depending on the state of its communication channel based on the principle of delayed accuracy. The study was carried out on a binary symmetric model of a communication channel for the case of using the Bose-Chowdhury-Hawkingham error-correcting code. The data obtained showed the effectiveness of the proposed approach and made it possible to determine approximately the optimal parameters of the system.

Keywords: information-measuring system, delayed accuracy principle, Bose-Chowdhury-Hawkingham code.

Demenkova T.A., Shlykov A.V. (e-mail: demenkova@mirea.ru)
Building a Reconfigurable Test Network for Systems on a Chip

The paper deals with the problems associated with testing modern SoC. The results of studies of IJTAG-based network designs that improve the overall throughput and security of the test network are presented. Improved bandwidth has been achieved using a new broadcast network design and a parallel IJTAG network design. The reconfigurable broadcast network is also scalable, supports hierarchical network architectures, and can easily interoperate with other IJTAG-compliant test architectures. Parallel application of test data to different sections of the SoC can lead to higher peak power consumption during the test compared to the functional power characteristics, which will slow down testing and / or get erroneous test results. Also, software was developed to support decision-making on the organization of a testing network based on IJTAG technology.

Keywords: parallel JTAG, SoC, digital signal processors, broadcast network, decision support software.

Nikitaev V.G., Pronichev A.N., Tamrazova O.B., Sergeev V.Yu., Sergeev Yu.Yu., Solomatin M.A., Medvedeva O.A., Kozlov V.S., Romanovskiy K.A. (e-mail: vgnikitayev@mephi.ru)
Model for recognizing of blue-white veil areas on images of skin neoplasms in oncodermatology

This article considers the problem of developing and describing a model for recognizing a blue-white veil on dermatoscopic images of skin neoplasms using artificial intelligence technologies in medicine. The program for recognizing the studied areas of neoplasm was developed based on the results of the work. Confirmation of the operability of this model was carried out experimentally on the example of 100 images of neoplasms from the dermatoscopic database. This model of recognition of the structureless area of the blue-white veil is designed to increase the reliability of the diagnosis of skin melanoma, and also helps to reduce the complexity of visual morphological analysis of neoplasms.

Keywords: digital image processing, structureless areas, blue-white veil, diagnosis of melanoma.

Kondakov A.V. (e-mail: avkondakov@mail.ru)
Graduation of tanks by liquid level and by gas space

The objective of the graduation of steel horizontal cylindrical tanks by the liquid level and by the gas space in order to improve the accuracy of determining the volume of liquid in the tank, is presented.

Keywords: tank, volume, calibration.

Meshchikhin I.A., Gavryushin S.S., Znayko G.G. (e-mail: sagezz@yandex.ru)
Calculation justification of the accuracy requirements for a measuring instrument based on Markov chains

The paper proposes an approach to solving the problem of calculating the accuracy requirements for measuring instruments. This assessment is proposed to be carried out on the basis of the analysis of the forecast quality of the dynamic system with variation of the measurement error as a parameter of the initial data. The result of assessing the accuracy requirements for the measuring instrument is determined by the properties of the monitoring object, and the measuring system developed taking into account the design requirements is specialized for the monitoring object. As an example, the work uses data from invasive measurement of human blood pressure.

Keywords: Markov process, lag space, finite element.

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