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The use of wireless sensor networks to monitoring the state of different large objects such as warehouses, manufacturing facilities, etc. is increasing. The most effective solution is the use of radio modules nRF24 in virtue of their low cost, low power consumption, addressing the problem of miniaturization of devices and data transmission capabilities at high speed. Enhanced Shock Burst technology...
Perspective directions of development of passenger transport complex of Russia. It is shown that the use of modern information technologies to manage regional transportation systems makes it possible to significantly improve almost all basic indicators of passenger transportation quality, to make them more effective and less costly, increase comfort and accuracy, reduce investment and operating costs...
This article presents the design results of the precision microcircuit of the instrumentation amplifier (IA) based on the fully differential difference op-amp (FDDA) and the double-channel low pass filter (LPF). It shows that the application of such IA leads to the high parameters of the sensor interface in the stability of offset voltage (V∞ < 250uV) and common-mode rejection in the extended temperature...
The characteristics of silicon oscillistor sensors with frequency output and oscillistor resistance-tofrequency converter (RF-converter) are discussed. The prospects oscillistor RF-converter for producing on its basis the various sensors with frequency output when the sensing element is a photo-, magnetic-, tenso-, thermo-, or variable resistor (linear and angular motion sensor), and converter resistance-to-frequency...
The paper substantiates an electrical circuit with separate balancing and two extended properties: extended functional capabilities and balancing all definable parameters by means of varistors only. The authors describe the way to make such bridging. Initial bridge circuit has been selected and the method to change its loop containing balancing elements has been defined, with such method comprising...
In this paper stressor are discussed the algorithms of processing of results of measurements of biopotentials for various grades of cereals in the conditions of the most typical influence: the increased and lowered temperature, salinization of the soil, influence of herbicides and toxins, existence of sporous diseases of cereals. The purpose of researches is fast determination (on the basis of vector...
This paper provides a new style of neurocontroller that is based on hybrid artificial neural network. The neural network comprises a layer of parallel radial basic networks with one input and one output, and a linear output layer. The genetic algorithm is used to search parameter of neural network. The performance of the proposed method is compared with the conventional PID methods for a dynamic plant...
We study the reasons of high efficiency of methods based on classifiers compositions, such as boosting. It has been shown that one of the main grounds for such efficiency is the usage of the effect of independence of features. To investigate the performance of a method we run it directly on the distributions. We compare approximating capabilities of boosting and splines. Also we show the relation...
A problem of electromagnetic field modeling with consideration of eddy currents is addressed. A formulation for calculating eddy currents with coupled total vector magnetic potential and reduced scalar magnetic potential is presented. The finite element method (FEM) is used to approximate the total vector magnetic potential and the boundary element method (BEM) is used to approximate reduced scalar...
Electrodynamic characteristics of single-layered and cascaded metasurfaces for filtering and absorption of millimeter wave range electromagnetic waves are investigated. 3D numerical model of local site of metasurface, which takes into account it sizes in three coordinate directions is developed for analysis of such frequency-selective structures. Novel design of double-sided frequency-selective surface...
This work describes the application of modern high-performance computing technologies such as multicore CPUs and GPUs coprocessors to the solution of three-dimensional (3D) problems of geoelectromagnetism with the use of the finite element method. The techniques for speeding up sparse linear system solving via iterative methods are discussed. Programs to solve large sparse complex-valued linear systems...
This work describes modern methods of parallelizing time consuming problems. Commonly used parallelization methods, such as OpenMP, MPI and GPUs, aimed to accelerate the solution of electromagnetic forward problems are revisited. Comparison of these technologies, their constraints and benefits for complex three-dimensional geoelectromagnetic field modeling are provided. An approach to configure the...
The paper proposes the method and software which allows user to carry out multidimensional inversion of magnetotelluric sounding data. The computational schemes of direct problems are based on the finite element method (FEM) with the use of meshes with rectangular regular grids using nodal and vector finite elements. Mathematical model of the inverse problem is based on the idea of the Gauss-Newton...
Increasing density of arrangement of radio-electronic equipment of different purpose, especially on-board equipment, limits significantly the possibility of heat removal by means of ventilation and convection in multi-level radio-electronic modules. At the same time, conductive method of heat removal, that suggests the use of heat mode support systems, special heat-exchange materials for sealing elements...
The article describes the method of determining receiving noise immunity for MIMO and MISO technologies. The method is based on the use of matrix eigenvalues of multiple correlation in the case of propagating a multi-path signal.
To reduce the volume of transmitted data, we propose to use the characteristics of cycle codes at the protocol of data transmission with the help of asynchronous transceiver that lets refuse the start marker and the counter giving the length of the transmitted package We considered the peculiarities the adaptive forming of training set for the revealing distorted of areas in electrocardiogram with...
The paper discusses the internal and external requirements related to control panel for hump complex simulator and methods for their implementation. The architecture of distributed microprocessor system of the panels control, the algorithms of its functioning and basic specifications are described.
The paper deals with wheel-drive electromechanical systems operating in conditions of uncertainty. Procedures of two types for cascade synthesis of feedback are designed. These procedures provide tracking for given trajectories with a given accuracy of the generalized coordinates of Lagrange mechanical subsystem. In the first procedure, the local feedbacks and corrective actions of states observer...
The paper deals with the problem of stabilizing with a given accuracy for output variables of SISO and MIMO nonlinear systems. A mathematical model of the control plant is represented in block form “input-output” and contains unmatched external disturbances and functional uncertainties. Within the block approach, decomposition procedures of synthesis of robust control are designed under the uncertainty...
A popular tool for identifying the relationships on spatial data is geographically weighted regression (GWR). GWR estimation quality strongly depends on the choice of the smoothing parameter. Typically for estimation purposes a range of the local area, or a number of nearest neighbors are fixed. However in practice objects can form clusters of different size and composition. For adaptive bandwidth...
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