Wyniki wyszukiwania - BazTech

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Modelling Noise Exposure by Means of Infrared Technology

Fedorko Gabriel, Heinz Dávid, Molnár Vieroslav, Brenner Tomáš

Advances in Science and Technology. Research Journal

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2019

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Vol. 13, no 4

230--238

EN

Noise measurement for the design of anti-noise measures is used as a tool to identify and evaluate the existing noise situation. The measurements are carried out in the vicinity of selected roads to demonstrate the need for the design of anti-noise measures or to assess the effectiveness of the measures. Where the measurements are performed for the design, detection and assessment of the effectiveness of a noise protection measure in relation to the protection of public health, such measurements shall be carried out by a person holding a Certificate of Professional Qualification for Qualitative and Quantitative Verification of Environmental Factors to assess their potential impact on health – noise measurement. The paper presents the modelling of the noise exposure using the infrared technology in the given area and the simulation of measures on the main road routes of the model.

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Analiza rozkładu pola temperaturowego na powierzchni transformatorów energetycznych

Łopatkiewicz R., Nadolny Z.

Napędy i Sterowanie

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2009

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R. 11, nr 10

63-67

PL

Analiza rozkładu temperatury jest jedną z coraz częściej stosowanych metod diagnostycznych transformatora. Pozwala wykryć wiele istotnych defektów. Rozkład temperatury na powierzchni transformatora uzyskuje się głównie mierząc promieniowanie podczerwone kamerą termowizyjną. Pomiar promieniowania jest stosunkowo prosty, lecz interpretacja uzyskanych wyników może być czasami błędna. Spowodowane jest to nieuwzględnieniem ważnych czynników, jakie wpływają na wynik pomiaru promieniowania podczerwonego powierzchni transformatora. Do czynników tych zaliczyć można między innymi współczynnik emisji promieniowania podczerwonego, kąt i odległość między kamerą a emiterem oraz temperaturą emitera. W artykule przedstawiono wpływ tych czynników na interpretację wyników pomiaru. Następnie zmierzono rozkłady temperatury na powierzchni różnych transformatorów wysokiego napięcia. Analiza uzyskanych wyników rozszerzona została o znajomość wpływu wyżej wymienionych czynników.

EN

Temperature profile analysis is one of the more and more commonly applied transformer diagnostics method. The method enables detection of many significant defects. Temperature profile on transformer surface is usually obtained thanks to the radiation measurement with the use of infrared camera. Radiation measurement is relatively simple but sometimes measurement results may be misinterpreted due to not taking into account important factors having an effect on the result of transformer surface heat radiation measurement. These factors include heat radiation emission factor, the angle and distance between camera and emitter as well as emitter temperature. The article describes these factor impact on measurement result interpretation. Then surface temperature profiles on various high voltage transformer were measured. The analysis of the results took into consideration the influence of above mentioned factors.

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Prospects of uncooled IR detector technology for military applications

Piotrowski J., Brzozowski P.

Problemy Techniki Uzbrojenia

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2001

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R. 30, z. 78

53--64

EN

Over the last several years military applications of infrared photodetectors operating at low temperatures have proliferated. More widespread use of the infrared systems with cooled detectors is limited by a high costs, large size, and inconvenience of operation. At the same time there is no fundamental reason that prevents high performance detection of infrared radiation without cooling. Recently, high performance infrared imagers with uncooled micro-bolometers or other types of thermal detectors have been demonstrated. There are significant efforts on uncooled photon detectors. Sophisticated architecture of the device and high quality materials are necessary to achieve useful performance of uncooled middle MWIR and longwavelength LWIR devices. In this paper we report the use of uncooled infrared photodetectors for military applications such as thermal imagers, smart munitions, laser range finders, threat warning systems, open space communications and others. Various ways to improve performance are described such as optimization of the architecture of the active elements, monolithic integration with immersion microlenses, elimination of traditional processes (radiative and Auger) and others. It is concluded that improved design, materials and processes should reduce or even eliminate the need for cooling of photodetectors in many important military applications of infrared technology.

PL

W publikacji "Perspektywy wojskowych zastosowań urządzeń techniki podczerwieni z niechłodzonymi detektorami" przedstawiono perspektywy rozwoju techniki podczerwieni z niechłodzonymi detektorami dla zastosowań militarnych.