Actual number: 4/2020

ISSN 1339-5017 (Online)

Archive:


No. 1

CALIBRATION CURVE OF SENSOR WORKING BY THE TRIANGULATION PRINCIPLE AND EFFECT OF TILT ON MEASUREMENT ABILITY

Author: Lukáš HRIVNIAK, Michal ŠAŠALA, Jozef SVETLIK, Tomáš STEJSKAL

Abstract: This paper deals with creating a calibration curve of a laser sensor that works on the principle of triangulation. It demonstrates the change of the calibration curve mainly by the different tilt angles of the sensor. The change in angle represents the effect of sensor mounting on the measurement results and the importance of taking proper mounting to obtain the most accurate measurement results.  Calibration was performed under as stable ambient conditions as possible and using the optical standard as a suitable instrument for calibrating the sensors. The following article highlights the importance of calibration. The effect of sensor inclination on the calibration curve and the importance of correct sensor installation on measurement accuracy.

Keywords: Measurement, triangulation, calibration, calibration curve.

Vol. 14, 2020, No. 1, p. 1-5

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WIND TURBINE IN GRID-OFF SYSTEM

Author: Milan JUS

Abstract: The paper presents an analysis of a wind turbine, which is one of the sources of electricity in the Grid-Off system.

Keywords: wind turbine, Grid-Off system, electric generator, Photovolaic panel, wind conditions.

Vol. 14, 2020, No. 1, p. 6-9

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MATHEMATICAL MODEL OF WIND TURBINE IN GRID-OFF SYSTEM

Author: Milan JUS

Abstract: This paper deals with the construction of a mathematical model of a wind turbine, which is one of the sources in the Grid-Off system.

Keywords: mathematical model, wind turbine, Grid-Off system, electric generator, wind conditions

Vol. 14, 2020, No. 1, p. 10-13

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SIMULATION OF A MATHEMATICAL MODEL OF A WIND TURBINE

Author: Milan JUS

Abstract: This paper presents a mathematical model of a wind turbine and its simulation. This is one of the main resources available to the island system (Grid-Off system).

Keywords: wind turbine, island system, Grid-Off system, renewable energy source.

Vol. 14, 2020, No. 1, p. 14-18

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RENEWABLE ENERGY SOURCES IN THE CASE OF CRISIS SITUATIONS

Author: Peter LIPTÁK, Ivan KOPECKÝ

Abstract: Operation of special equipment is possible in crisis situations. It is because special equipment is designed for operation in non-standard often extreme conditions and situation, it is available, it has a high degree of crossing capability and it is able to provide basic living conditions even in field, e.g. provision of power for hospital, transportation of wounded and injured persons, supplies, medical care in field conditions, delivery of potable and utility water etc. The authors in the paper deal with a possibility to provide electric energy through advanced renewable sources, especially in meeting tasks in areas with no public mains,  possible supplies of potable and non-potable water, embedding such assets into mobile systems. The authors in publication summarize results of research within the   „Use of renewable sources of energy in practice“project. System of modeling and computer-aided simulation of renewable sources of energy has been proposed within this project. Application of a system for designing of power systems in logistic containers is expected. The knowledge on power balance of logistic containers operated by the SR Armed Forces in missions abroad is summarized in the last chapter of the paper.

Keywords: Crisis situations, renewable sources of energy, photovoltaic collectors, logistic container, power systems, mobile assets of crisis management

Vol. 14, 2020, No. 1, p. 19-24

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SPECIAL EQUIPMENT FROM AN OPERATION IN CRISIS SITUATIONS POINT OF VIEW, THE RESULTS ACHIEVED ON PARTICULAR EQUIPMENT

Author: Peter LIPTÁK, Ivan KOPECKÝ

Abstract: Operation of special equipment is possible in crisis situations. It is because special equipment is designed for operation in non-standard often extreme conditions and situation. Today, everyone tries to become independent [1] with regard to persons and load transportation and number of cars increases and their comfort improves. Almost all cars are equipped with heating, ventilating and air conditioning systems [2] which make effect on environment as the cars destroy an ozone layer because of refrigerants as chlorofluorocarbon and hydro fluorocarbon used for air-conditioning and refrigeration.  Other minuses of present heating, ventilating and air-conditioning systems include a significant reduction of driving range [3] of the vehicle, as a compressor is driven by the crankshaft of the engine. Maintenance and repairing cost of this system is very high.

Keywords: Peltier element, cooler, thermoelectric features, current, semiconductor

Vol. 14, 2020, No. 1, p. 25-29

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HIGH-ENERGETIC MATERIALS IN DEFENCE INDUSTRY

Author: Peter LIPTÁK, Barnabáš KOVÁCS

Abstract: High-energetic materials involve operations with special equipment. An application of new non-traditional materials – composites and nano-materials makes this field highly up-to-date and from a research point of view it is needed to pay attention to it. The paper presents current characteristics of such materials, their classification and supposed trends of their development.
Research in the field of high- energetic materials makes a mutual progress conditional on mechanical and electrical engineering, which includes special equipment. The paper also deals with issue of mutual interaction of weapon and ammunition systems containing energetic materials. Work with high-energetic materials is not only a part of work for defence industry as well as a part of work in crisis management, mining, building and other parts of the life of a society.

Keywords: High-energetic materials, explosives, special equipment, nano-materials, composites, crisis management

Vol. 14, 2020, No. 1, p. 30-36

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