The article describes the development of an electrical impedance tomography module with the following characteristics: number of electrodes n = 16; injected current I = 5 mA ± 2%; permissible error of the measuring channel δadm = 2%; injected current frequency f = (10…400) kHz; resulting voltage on the injection electrodes U ≤ 12 V; the shape of the injected current is sinusoidal, triangular, rectangular; USB data interface. A functional diagram of the device has been developed and described. Simulation of a current source with a connected load in the MicroCap software package was carried out

Keywords: electrical impedance tomography, ventilator, disease diagnostics, modeling

This article considers one of the parts of the development of a device for determining the magnetic characteristics of ferromagnetic materials with a shape memory effect. A functional diagram of the device has been developed. The operation of the device was simulated and the behavior of the shape memory alloy was studied. The error in determining the magnetic characteristics of the FMSF using the magnetizing setup of the developed device did not exceed 0.25%.

Keywords: magnetostrictive materials, basic magnetization curve, magnetic shunt, magnetic flux

This article discusses the development of a magnetometer calibration device, which is controlled by a microcontroller, Arduino [1, 2], which can receive, process and transmit the necessary commands to the peripheral part of the installation using the written program code. The need for buffer circuits and elements allows you to control I / O devices. With their help, interface hardware is implemented. Structural and functional diagrams of the device were developed. And also the calculation of the parameters of the Helmholtz coils was carried out, their 3D model was built. With the help of the Gaussmeter, a full-scale experiment was carried out, which confirmed the operability of the device and its effectiveness.

Keywords: control and measuring device, induction, Helmholtz coils, gaussmeter

it is known that the human body consists of water, proteins, minerals and adipose tissue, the sum of which is body weight. An important condition for maintaining health is the balance of the main components found in the internal organs of a person. Currently, the development of modern technologies allows you to find out the exact composition of your body, as well as internal organs, without complicated analyzes, using special devices that are based on measuring the bioimpedance of living tissue. Absolutely all tissues can conduct electric current, while the more water in the tissues, the more electrical conductivity and less resistance., The opposite is also true. Bioimpedance analysis measures the reactance of parts of the human body at different frequencies. On the basis of which the characteristics of the composition of the body or internal organs are calculated. Meanwhile, the measurement of the impedance of a person or his internal organs is associated with certain problems. So distorting factors can be the position of a person in space, improperly prepared areas of the body from which data are taken, improper placement of electrodes, poor contact. The aim of this work was to construct a regression model of a device for measuring the impedance of a biological object (BO), reflecting the contribution of the BO impedance to the total impedance of the entire measurement section.

Keywords: distributed information processing system, self-similar flow, average response time of the system, simulation, object-oriented concept, agent-based and discrete-event modeling