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Wyświetlanie 1-15 z 87
Tytuł:
The analysis of the effects of screening helicopter engine compartments for infrared emission
Autorzy:
Fijałkowski, S.
Powiązania:
https://bibliotekanauki.pl/articles/102769.pdf
Data publikacji:
2013
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
helicopter
infrared screen
infrared emission
egine gondola
Opis:
The paper presents the research on using infrared screens protecting an engine in an engine gondola in PZL W-3 helicopter to limit infrared emission to the surrounding. The methods of numerical modelling and computing simulation (hover and horizontal flight forward) were applied to the analysis. The results enabled formulating the guidelines to construct screens.
Źródło:
Advances in Science and Technology. Research Journal; 2013, 7, 17; 23-34
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Remarks on noise removal in infrared images
Autorzy:
Budzan, S.
Wyżgolik, R.
Powiązania:
https://bibliotekanauki.pl/articles/114180.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
thermography
infrared images
noise removal
Opis:
Noise removal in IR (Infra Red) images is very popular in recent years, however the same approach is utilized as for vision images, with no or minor changes. In this work we wanted to show the results of noise removal for selected filters. We focused on investigation of some filters normally used for image processing and their influence to IR image quality. In IR imaging the choice of filter depends mainly on the purpose of the processing, e.g. detection of small objects in complex images, edge and contour detection or removal of non-uniformity of the detector array. The performance of the selected noise reduction filters was evaluated using PSNR (Peak Signal-to-Noise Ratio) and MAE (Mean Absolute Error) quality measure, greater value of the PSNR and lower value of the MAE indicate better noise reduction. The results are shown only for few images from our database which contain over 2000 of IR images.
Źródło:
Measurement Automation Monitoring; 2015, 61, 6; 187-190
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Method of tracking of HAZ properties based on sequence of infrared images
Autorzy:
Fidali, M.
Powiązania:
https://bibliotekanauki.pl/articles/114361.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
infrared imagining
welding monitoring
image processing
Opis:
Arc welding is commonly applied in industry. Assessment of the quality of welded joints is one of crucial tasks especially in automated applications. In the paper preliminary research devoted to the evaluation of Heat Affected Zone (HAZ) properties using method of tracking of defined Region of Interest (ROI) on infrared images continuously acquired during welding process. The proposed method can be useful to detection of welding instabilities as well as welded joint defects.
Źródło:
Measurement Automation Monitoring; 2017, 63, 4; 143-145
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Compression of high dynamic infrared image using auto aggregation algorithm
Autorzy:
Fidali, M.
Jamrozik, W.
Powiązania:
https://bibliotekanauki.pl/articles/114701.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
infrared image
compression
enhancement
high dynamic
Opis:
The article presents a method of compression of High Dynamic Range of infrared image and its details enhancement. The method is based on aggregation of partial images with different ranges of pixel values generated using a weighting function. Aggregation of images could be performed according to proposed scheme with use of the optimal algorithm selected by user. Preliminary results shown that the method can reveal previously hidden details in the original image.
Źródło:
Measurement Automation Monitoring; 2017, 63, 4; 146-149
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of the Detector Characteristic on the Result of Sky Temperature Measurement with the Use of Long-Wave Infrared Camera
Autorzy:
Kruczek, T.
Powiązania:
https://bibliotekanauki.pl/articles/114666.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
thermovision infrared measurements
sky thermal radiation
sky temperature
characteristic of infrared camera detector
Opis:
During the temperature measurements by means of infrared camera the temperature of surrounding elements must be known. In the case of thermovision inspections of the objects exposed to open air space, the surroundings consists of two elements, it is the ground and hypothetical sky surface. The sky temperature measured by long-wave IR camera is of apparent character because it expresses the thermal radiation of the sky within the spectral operational range of this camera i.e. 7.5÷13 μm. The abovementioned spectral range is coincident with so called atmospheric window within which the thermal radiation of the sky is relatively low. The emissivity of atmosphere within this window is low in the central part and high near the limits of the aforementioned range. In relation with the detector characteristic of the IR camera it causes underestimation of the measured sky temperature. This work deals with the analysis of influence of the IR camera detector characteristic on the results of determination of sky temperature and its thermal radiation intensity.
Źródło:
Measurement Automation Monitoring; 2015, 61, 6; 173-175
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Background light suppression lock-in method for multispectral measurements with near-infrared LED spotlight illumination
Autorzy:
Olbrycht, R.
Powiązania:
https://bibliotekanauki.pl/articles/114491.pdf
Data publikacji:
2018
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
multispectral
imaging
near infrared
Opis:
The paper deals with illumination issues in multispectral imaging and presents the lock-in approach for background light suppression. There is comparison shown between the results obtained with differential approach and lock-in approach without sweep and with sweep. Obtained results prove the good performance of background suppression with the proposed lock-in approach.
Źródło:
Measurement Automation Monitoring; 2018, 64, 4; 99-102
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Image processing of leaks detection in sequence of infrared images
Autorzy:
Bukowska-Belniak, B.
Leśniak, A.
Powiązania:
https://bibliotekanauki.pl/articles/114417.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
image processing
infrared image
experimental embankment
leaks detection
Opis:
This work presents the method of leaks detection in recorded sequence of infrared images. Infrared field measurements were taken on small experimental embankment during flood process simulation. The leak processes took place thru initially dry facility. Getting wet areas were visible in infrared images as lower temperatures part of embankment on its air side. Image processing methods allowed to localize the leak in thermal images, despite the impact of external factors on the measurement and differences in objects emissivity in the observed scene.
Źródło:
Measurement Automation Monitoring; 2017, 63, 4; 131-134
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pasywne czujniki podczerwieni
Passive infrared detectors
Autorzy:
Serafin, K.
Powiązania:
https://bibliotekanauki.pl/articles/158115.pdf
Data publikacji:
1998
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Opis:
Omówiono podstawy teorii detekcji promieniowania podczerwonego ze szczególnym uwzględnieniem zjawisk występujących w detektorach piroelektrycznych. Zaprezentowano konstrukcję i zasadę działania pasywnych czujników podczerwieni. Czujniki te są szeroko stosowane w systemach sygnalizacji włamania i napadu jako detektory ruchu. Przedstawiono ideę analizy sygnału z detektora podczerwieni w specjalizowanych układach elektronicznych czujnika.
The theory infrared energy detection has been described. The attention was focused on phenomena in the pyroelectric detectors. The construction and principles of working has been presented. The infrared detectors are widely used in intruder alarm systems. The conception of infrared detector output signal analysis in application specific integrated circuits has been de scribed.
Źródło:
Pomiary Automatyka Kontrola; 1998, R. 44, nr 10, 10; 379-384
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Termografia w podczerwieni - błędy i niepewności
Infrared thermography - errors and uncertainties
Autorzy:
Minkina, W.
Dudzik, S.
Powiązania:
https://bibliotekanauki.pl/articles/157689.pdf
Data publikacji:
2009
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
termografia w podczerwieni
błędy
niepewności
infrared thermography
errors
uncertainties
Opis:
W artykule przedstawiono zarys teorii błędów i niepewności występujących podczas bezstykowego pomiaru temperatury a pomocą kamery termowizyjnej. Wskazano na różnicę pomiędzy pojęciami błędu i niepewności. Dodatkowo przeprowadzono dyskusję źródeł powstawania błędów i niepewności w tego typu pomiarach. Zaprezentowano wyniki analizy niepewności metodą Monte Carlo dla wybranych warunków pomiaru. Treść artykułu odnosi się do monografii autorów pod tytułem: "Infrared Thermography - errors and uncertainties" będącej aktualnie w druku w wydawnictwie John Wiley & Sons.
In the paper there is presented an outline of the theory of errors and uncertainties for non-contact temperature measurements with an infrared camera. The paper begins with an introduction. In this section, the model of the infrared camera measurement path is described and a difference between the error and uncertainty concept is pointed out. The next section deals with the errors of infrared thermography measurements [1, 3]. In this section an analysis of the source of errors is conducted as well [3, 4]. The exemplary results of the error analysis regarding with the emissivity errors are shown (Figs. 1-3). In Section 3 an uncertainty analysis of the infrared thermography measurements is performed [1-3, 5-12, 14]. The exemplary results of the uncertainty analysis with the Monte Carlo simulations are presented (Figs. 5, 6). These results are obtained for the commonly occurring measurement conditions. The paper ends with conclusions. In this section the quantitative conclusions from the error and uncertainty analysis are drawn. These conclusions can be very useful for thermographers taking the infrared thermography measurements in practical situations. The contents of this paper refers to the authors' monograph entitled "Infrared Thermography - errors and uncertainties", currently printed in John Wiley & Sons.
Źródło:
Pomiary Automatyka Kontrola; 2009, R. 55, nr 11, 11; 868-873
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Testing coatings of reflecting infrared radiation for a target for night shooting
Autorzy:
Swiderski, Waldemar
Hłosta, Paweł
Polak, Grzegorz
Tymiński, Dariusz
Powiązania:
https://bibliotekanauki.pl/articles/114598.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
thermal target
infrared
emissivity
shooting
Opis:
The paper presents the principle of operation of a new night-shooting target. Because this target requires a covering that reflects the infrared radiation flux generated by the reflector from its surface, testing of different variants of the cover and the shape of the target surface has been carried out. Emissivity is a physical parameter characterizing the radiant properties of real bodies. The emissivity coefficient of extruded aluminum sheet samples covered with a layer of green colored aluminum oxide was determined. The aluminum oxide layer was applied using two different technologies being galvanic and anodizing.
Źródło:
Measurement Automation Monitoring; 2019, 65, 2; 41-43
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Termowizja w ocenie jakości przegród budowlanych
Infrared method for the quality rating of building partitions
Autorzy:
Steidl, T.
Krause, P.
Powiązania:
https://bibliotekanauki.pl/articles/157649.pdf
Data publikacji:
2009
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
termowizja
budynek
przegrody budowlane
thermography
infrared inspections
buildings
Opis:
W artykule przedstawiono zastosowanie badań termowizyjnych w ocenie jakości cieplnej przegród budowlanych. Opisano wymagania w zakresie prowadzenia pomiarów kamerą termowizyjną w budownictwie oraz główne czynniki wpływające na otrzymywane wyniki. Na praktycznych przykładach pokazano analizę badań zestawiając wyniki pomiarów termowizyjnych z obliczeniami. Dla badanych fragmentów przegród budowlanych omówiono występujące defekty i anomalie termiczne.
In the paper principles of using the infrared thermography method in building engineering are presented. The first section contains the introduction to the topic of using thermography in building engineering. Defects of building partitions which can be detected by infrared camera are described. The second section gives a short description of the factors which influence the quality of thermo-grams. According to the authors, the main factors are: infrared camera technical parameters, keeping the rules for performing investigations, knowledge of a building structure, ability of making the computer models of building partition connections which can be used to verify the investigation results. The third section presents a short overview of the investigation procedures used for taking measurements during building diagnostics. In the fourth section a way of taking the fundamental and subsidiary measurement is given. The diagnosed defects and anomalies for all partitions and connections between them are described. Several chosen thermograms made during investigations are shown in Figs. 1, 2, 4 with description of the defects. Verification of the selected ther-mograms was performed with the computer program KOBRA. In the summary some guidelines connected with the way of presenting the results of thermal diagnostics of buildings are given.
Źródło:
Pomiary Automatyka Kontrola; 2009, R. 55, nr 11, 11; 942-945
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling Noise Exposure by Means of Infrared Technology
Autorzy:
Fedorko, Gabriel
Heinz, Dávid
Molnár, Vieroslav
Brenner, Tomáš
Powiązania:
https://bibliotekanauki.pl/articles/102846.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
noise exposure
simulation
infrared technology
ekspozycja na hałas
symulacja
technologia podczerwieni
Opis:
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.
Źródło:
Advances in Science and Technology. Research Journal; 2019, 13, 4; 230-238
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Gas leaks detection using passive thermal infrared hyperspectral imaging
Autorzy:
Lagueux, P.
Tremblay, P.
Morton, V.
Chamberland, M.
Farley, V.
Kastek, M.
Firmanty, K.
Powiązania:
https://bibliotekanauki.pl/articles/114458.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
methane
imaging
infrared
hyperspectral
shale gas
Opis:
There are many types of natural gas fields including shale formations which are common especially in the St-Lawrence Valley (Canada). Since methane (CH4), the major component of shale gas, is odorless, colorless and highly flammable, in addition of being a greenhouse gas, methane emanations and/or leaks are important to consider for both safety and environmental reasons. On this regard, passive remote sensing represents an interesting approach since it allows characterization of large areas from a safe location. In order to illustrate the potential of passive thermal infrared hyperspectral imaging for research on natural gas, imaging was carried out on a shale gas leak that unexpectedly happened during a geological survey near Hospital Enfant-Jesus (Québec City, Canada) in December 2016. Quantitative methane imaging was carried out based on its unique infrared spectral signature. The results show how this novel technique could be used for advanced research on shale gases.
Źródło:
Measurement Automation Monitoring; 2017, 63, 2; 65-68
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative assessment of heat insulation properties of thermal resistant paints with use of infrared camera
Autorzy:
Kruczek, T.
Szczygieł, I.
Kruczek, G.
Kowalczyk, P.
Powiązania:
https://bibliotekanauki.pl/articles/114646.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
thermovision infrared measurements
thermal resistant paint
Opis:
To reduce heat losses from buildings various methods are used. One of them is applying so called “thermal resistant paints”. These paints can be put in principle on the inner but also on outer surfaces of building external walls. The aforementioned paints are put on a surface in the similar way as other paints in building construction technology and form a thin insulation layer. The acting of this paints consists in causing a noticeable temperature drop within this layer and simultaneously on the wall surface. This work presents the experimental rig, measurement procedures and selected measurement results.
Źródło:
Measurement Automation Monitoring; 2017, 63, 3; 98-101
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selected chemical substances detection using dual-band thermal imaging camera with microbolometer infrared focal plane array detectors
Autorzy:
Ligienza, A.
Bieszczad, G.
Gogler, S.
Powiązania:
https://bibliotekanauki.pl/articles/114186.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
infrared spectroscopy
microbolometer FPA
image processing
Opis:
Main notion of this paper is presenting the possibility of applying microbolometer FPAs in detection and visualization of far infrared sub-bands (LWIR 8-12 µm), as a cheaper alternative to cooled detectors. Specifically designed and built device consists of infrared optics, custom made beamsplitter with desired spectral characteristic, two microbolometer infrared FPA detectors, data acquisition and processing software for substance detection.
Źródło:
Measurement Automation Monitoring; 2017, 63, 2; 69-72
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 87

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