TY  - CONF
AU  - Martinenko, Anastasija
AU  - Brajović, Ljiljana
AU  - Malović, Miodrag
PY  - 2022
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2680
AB  - In this paper, the possibility of applying Kirchhoff 's scalar approximation model for determining the backscattering coefficient from rough surfaces is investigated. Surfaces of dielectric and metallic materials, which have low roughness are considered. Based on the roughness parameters and electrical properties of these materials, the backscattering coefficient is modelled as a function of 
the incident angle of electromagnetic radiation used in laser scanning. It was represented that the type of scattering and the range of backscattering radiation angles, in the case of seemingly smooth surfaces, vary significantly when the roughness parameters change.
PB  - University of Banja Luka, Faculty of Architecture, Civil Engineering and Geodesy
C3  - STEPGRAD2022
T1  - Influence of material surface roughness on backscattering in laser scanning
DO  - 10.7251/STP2215487M
ER  - 

@conference{
author = "Martinenko, Anastasija and Brajović, Ljiljana and Malović, Miodrag",
year = "2022",
abstract = "In this paper, the possibility of applying Kirchhoff 's scalar approximation model for determining the backscattering coefficient from rough surfaces is investigated. Surfaces of dielectric and metallic materials, which have low roughness are considered. Based on the roughness parameters and electrical properties of these materials, the backscattering coefficient is modelled as a function of 
the incident angle of electromagnetic radiation used in laser scanning. It was represented that the type of scattering and the range of backscattering radiation angles, in the case of seemingly smooth surfaces, vary significantly when the roughness parameters change.",
publisher = "University of Banja Luka, Faculty of Architecture, Civil Engineering and Geodesy",
journal = "STEPGRAD2022",
title = "Influence of material surface roughness on backscattering in laser scanning",
doi = "10.7251/STP2215487M"
}

Martinenko, A., Brajović, L.,& Malović, M.. (2022). Influence of material surface roughness on backscattering in laser scanning. in STEPGRAD2022
University of Banja Luka, Faculty of Architecture, Civil Engineering and Geodesy..
https://doi.org/10.7251/STP2215487M

Martinenko A, Brajović L, Malović M. Influence of material surface roughness on backscattering in laser scanning. in STEPGRAD2022. 2022;.
doi:10.7251/STP2215487M .

Martinenko, Anastasija, Brajović, Ljiljana, Malović, Miodrag, "Influence of material surface roughness on backscattering in laser scanning" in STEPGRAD2022 (2022),
https://doi.org/10.7251/STP2215487M . .

TY  - CONF
AU  - Mirković, Nikola
AU  - Brajović, Ljiljana
AU  - Malović, Miodrag
PY  - 2018
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1600
AB  - The residual stresses in rails are generated during the manufacturing process and have uneven distribution in rail cross section. The residual stress is a part of basic tensile stress in rail foot. For used rail, the residual stress value of 80 MPa is commonly used in the engineering calculations. On the other hand, the standard EN 13674 prescribes residual stress values up to 250 MPa and destructive method using electrical strain gauge for measurement of rail residual stress. Since destructive measurement methods are unsuitable for use in the track, the possible non-destructive in situ methods for measuring of residual stresses in the rails are discussed in this paper. The fundamentals of X-ray diffraction, ultrasonic, magnetic and electromagnetic methods are explained, as well as, their advantages and disadvantages.
PB  - Faculty of Mechanical Engineering, Niš
C3  - Proceedings / XVIII Scientific-expert conference on railways - RAILCON 18, october 11-12, 2018, Niš
T1  - Methods for determination of residual stress in rail
EP  - 116
SP  - 113
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1600
ER  - 

@conference{
author = "Mirković, Nikola and Brajović, Ljiljana and Malović, Miodrag",
year = "2018",
abstract = "The residual stresses in rails are generated during the manufacturing process and have uneven distribution in rail cross section. The residual stress is a part of basic tensile stress in rail foot. For used rail, the residual stress value of 80 MPa is commonly used in the engineering calculations. On the other hand, the standard EN 13674 prescribes residual stress values up to 250 MPa and destructive method using electrical strain gauge for measurement of rail residual stress. Since destructive measurement methods are unsuitable for use in the track, the possible non-destructive in situ methods for measuring of residual stresses in the rails are discussed in this paper. The fundamentals of X-ray diffraction, ultrasonic, magnetic and electromagnetic methods are explained, as well as, their advantages and disadvantages.",
publisher = "Faculty of Mechanical Engineering, Niš",
journal = "Proceedings / XVIII Scientific-expert conference on railways - RAILCON 18, october 11-12, 2018, Niš",
title = "Methods for determination of residual stress in rail",
pages = "116-113",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1600"
}

Mirković, N., Brajović, L.,& Malović, M.. (2018). Methods for determination of residual stress in rail. in Proceedings / XVIII Scientific-expert conference on railways - RAILCON 18, october 11-12, 2018, Niš
Faculty of Mechanical Engineering, Niš., 113-116.
https://hdl.handle.net/21.15107/rcub_grafar_1600

Mirković N, Brajović L, Malović M. Methods for determination of residual stress in rail. in Proceedings / XVIII Scientific-expert conference on railways - RAILCON 18, october 11-12, 2018, Niš. 2018;:113-116.
https://hdl.handle.net/21.15107/rcub_grafar_1600 .

Mirković, Nikola, Brajović, Ljiljana, Malović, Miodrag, "Methods for determination of residual stress in rail" in Proceedings / XVIII Scientific-expert conference on railways - RAILCON 18, october 11-12, 2018, Niš (2018):113-116,
https://hdl.handle.net/21.15107/rcub_grafar_1600 .

TY  - JOUR
AU  - Malović, Miodrag
AU  - Brajović, Ljiljana
AU  - Šekara, Tomislav B.
PY  - 2017
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/837
AB  - Cross-axial or transverse sensitivity of an accelerometer can be compensated by digital processing of the output signal. To perform this, it is necessary to determine coefficients that describe a sensor's response to excitation experimentally. Many procedures advised by standards and scientific papers use expensive equipment which is not available in every laboratory. Therefore, a simple method is proposed, namely a variation of the static tilt test, requiring no other measuring equipment than the sensor itself and a flat surface. Results vary depending on sensor surface and housing quality, but it has been shown that cross sensitivity effects can be reduced from several percent usually associated with commercial three-axial MEMS accelerometers down to 1% or less.
AB  - Kros- aksijalna, odnosno poprečna osetljivost akcelerometra može biti kompenzovana digitalnim procesiranjem izlaznog signala. Da bi se to izvelo, potrebno je eksperimentalno odrediti koeficijente koji opisuju odgovor senzora na pobudu. Mnoge procedure koje se odnose na to, a koje su preporučene standardima i naučnim člancima, koriste skupu opremu koja nije dostupna u svakoj laboratoriji. Zato je predložen jednostavan alternativni metod, varijacija statičkog tilt-testa, koji ne zahteva nikakvu drugu mernu opremu osim senzora i ravne površine. Rezultati variraju u zavisnosti od kvaliteta površine i kućišta senzora, ali je pokazano da se efekti poprečne osetljivosti mogu smanjiti bar nekoliko puta, te da se tipična poprečna osetljivost komercijalnih troosnih MEMS akcelerometara od nekoliko procenata može lako svesti ispod 1%.
PB  - Univerzitet odbrane u Beogradu - Institut za naučne informacije, Beograd
T2  - Vojnotehnički glasnik
T1  - Twenty-four position tilt test for accelerometer cross-axial sensitivity compensation
T1  - Kompensacija poperečnoj čuvstvitel'nosti MËMS akselerometrov s pomošč'ju testirovanija statičnogo ugla naklona, provedennogo v 24-eh pozicijah
T1  - Kompenzacija poprečne osetljivosti MEMS akcelerometra metodom tilt-testa u 24 pozicije
EP  - 661
IS  - 3
SP  - 651
VL  - 65
DO  - 10.5937/vojtehg65-13137
ER  - 

@article{
author = "Malović, Miodrag and Brajović, Ljiljana and Šekara, Tomislav B.",
year = "2017",
abstract = "Cross-axial or transverse sensitivity of an accelerometer can be compensated by digital processing of the output signal. To perform this, it is necessary to determine coefficients that describe a sensor's response to excitation experimentally. Many procedures advised by standards and scientific papers use expensive equipment which is not available in every laboratory. Therefore, a simple method is proposed, namely a variation of the static tilt test, requiring no other measuring equipment than the sensor itself and a flat surface. Results vary depending on sensor surface and housing quality, but it has been shown that cross sensitivity effects can be reduced from several percent usually associated with commercial three-axial MEMS accelerometers down to 1% or less., Kros- aksijalna, odnosno poprečna osetljivost akcelerometra može biti kompenzovana digitalnim procesiranjem izlaznog signala. Da bi se to izvelo, potrebno je eksperimentalno odrediti koeficijente koji opisuju odgovor senzora na pobudu. Mnoge procedure koje se odnose na to, a koje su preporučene standardima i naučnim člancima, koriste skupu opremu koja nije dostupna u svakoj laboratoriji. Zato je predložen jednostavan alternativni metod, varijacija statičkog tilt-testa, koji ne zahteva nikakvu drugu mernu opremu osim senzora i ravne površine. Rezultati variraju u zavisnosti od kvaliteta površine i kućišta senzora, ali je pokazano da se efekti poprečne osetljivosti mogu smanjiti bar nekoliko puta, te da se tipična poprečna osetljivost komercijalnih troosnih MEMS akcelerometara od nekoliko procenata može lako svesti ispod 1%.",
publisher = "Univerzitet odbrane u Beogradu - Institut za naučne informacije, Beograd",
journal = "Vojnotehnički glasnik",
title = "Twenty-four position tilt test for accelerometer cross-axial sensitivity compensation, Kompensacija poperečnoj čuvstvitel'nosti MËMS akselerometrov s pomošč'ju testirovanija statičnogo ugla naklona, provedennogo v 24-eh pozicijah, Kompenzacija poprečne osetljivosti MEMS akcelerometra metodom tilt-testa u 24 pozicije",
pages = "661-651",
number = "3",
volume = "65",
doi = "10.5937/vojtehg65-13137"
}

Malović, M., Brajović, L.,& Šekara, T. B.. (2017). Twenty-four position tilt test for accelerometer cross-axial sensitivity compensation. in Vojnotehnički glasnik
Univerzitet odbrane u Beogradu - Institut za naučne informacije, Beograd., 65(3), 651-661.
https://doi.org/10.5937/vojtehg65-13137

Malović M, Brajović L, Šekara TB. Twenty-four position tilt test for accelerometer cross-axial sensitivity compensation. in Vojnotehnički glasnik. 2017;65(3):651-661.
doi:10.5937/vojtehg65-13137 .

Malović, Miodrag, Brajović, Ljiljana, Šekara, Tomislav B., "Twenty-four position tilt test for accelerometer cross-axial sensitivity compensation" in Vojnotehnički glasnik, 65, no. 3 (2017):651-661,
https://doi.org/10.5937/vojtehg65-13137 . .

TY  - JOUR
AU  - Malović, Miodrag
AU  - Brajović, Ljiljana
AU  - Sekara, Tomislav
AU  - Mišković, Zoran
PY  - 2016
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/768
AB  - A lossless compression scheme for the data acquired from three-axial microelectromechanical (MEMS) accelerometer is presented. Time delay estimation (TDE) was applied in conjunction with differential pulse code modulation (DPCM) as the preprocessor to entropy coding, to perform lossless compression on an embedded sensor device with limited memory and speed in real time. The essence of this method is to check if the signal exhibits certain level of periodicity, and code the differences between samples one signal period apart if it does. Limited choice of feasible mathematical operations was an important constraint implied by the architecture of the embedded sensor device. Algorithm execution time was improved by programming in assembler and avoiding unnecessary operations. Experiments have confirmed that considerable compression ratio gains can be achieved if the signal is quasiperiodic.
PB  - Kauno Technologijos Universitetas
T2  - Elektronika Ir Elektrotechnika
T1  - Lossless Compression of Vibration Signals on an Embedded Device Using a TDE Based Predictor
EP  - 26
IS  - 2
SP  - 21
VL  - 22
DO  - 10.5755/j01.eie.22.2.7646
ER  - 

@article{
author = "Malović, Miodrag and Brajović, Ljiljana and Sekara, Tomislav and Mišković, Zoran",
year = "2016",
abstract = "A lossless compression scheme for the data acquired from three-axial microelectromechanical (MEMS) accelerometer is presented. Time delay estimation (TDE) was applied in conjunction with differential pulse code modulation (DPCM) as the preprocessor to entropy coding, to perform lossless compression on an embedded sensor device with limited memory and speed in real time. The essence of this method is to check if the signal exhibits certain level of periodicity, and code the differences between samples one signal period apart if it does. Limited choice of feasible mathematical operations was an important constraint implied by the architecture of the embedded sensor device. Algorithm execution time was improved by programming in assembler and avoiding unnecessary operations. Experiments have confirmed that considerable compression ratio gains can be achieved if the signal is quasiperiodic.",
publisher = "Kauno Technologijos Universitetas",
journal = "Elektronika Ir Elektrotechnika",
title = "Lossless Compression of Vibration Signals on an Embedded Device Using a TDE Based Predictor",
pages = "26-21",
number = "2",
volume = "22",
doi = "10.5755/j01.eie.22.2.7646"
}

Malović, M., Brajović, L., Sekara, T.,& Mišković, Z.. (2016). Lossless Compression of Vibration Signals on an Embedded Device Using a TDE Based Predictor. in Elektronika Ir Elektrotechnika
Kauno Technologijos Universitetas., 22(2), 21-26.
https://doi.org/10.5755/j01.eie.22.2.7646

Malović M, Brajović L, Sekara T, Mišković Z. Lossless Compression of Vibration Signals on an Embedded Device Using a TDE Based Predictor. in Elektronika Ir Elektrotechnika. 2016;22(2):21-26.
doi:10.5755/j01.eie.22.2.7646 .

Malović, Miodrag, Brajović, Ljiljana, Sekara, Tomislav, Mišković, Zoran, "Lossless Compression of Vibration Signals on an Embedded Device Using a TDE Based Predictor" in Elektronika Ir Elektrotechnika, 22, no. 2 (2016):21-26,
https://doi.org/10.5755/j01.eie.22.2.7646 . .

TY  - CONF
AU  - Naod, S.
AU  - Brajović, Ljiljana
AU  - Odalović, Oleg
AU  - Malović, Miodrag
AU  - Todorović, Goran
AU  - Gospavić, Radovan
PY  - 2015
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1298
PB  - Građevinski fakultet, Univerzitet u Beogradu, Beograd
C3  - Zbornik radova / Kongres metrologa 2015, Zlatibor, 12.-15. oktobar 2015. godine
T1  - Gravitacioni gradiometri koji se koriste u satelitskim misijama - princip rada i merne karakteristike
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1298
ER  - 

@conference{
author = "Naod, S. and Brajović, Ljiljana and Odalović, Oleg and Malović, Miodrag and Todorović, Goran and Gospavić, Radovan",
year = "2015",
publisher = "Građevinski fakultet, Univerzitet u Beogradu, Beograd",
journal = "Zbornik radova / Kongres metrologa 2015, Zlatibor, 12.-15. oktobar 2015. godine",
title = "Gravitacioni gradiometri koji se koriste u satelitskim misijama - princip rada i merne karakteristike",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1298"
}

Naod, S., Brajović, L., Odalović, O., Malović, M., Todorović, G.,& Gospavić, R.. (2015). Gravitacioni gradiometri koji se koriste u satelitskim misijama - princip rada i merne karakteristike. in Zbornik radova / Kongres metrologa 2015, Zlatibor, 12.-15. oktobar 2015. godine
Građevinski fakultet, Univerzitet u Beogradu, Beograd..
https://hdl.handle.net/21.15107/rcub_grafar_1298

Naod S, Brajović L, Odalović O, Malović M, Todorović G, Gospavić R. Gravitacioni gradiometri koji se koriste u satelitskim misijama - princip rada i merne karakteristike. in Zbornik radova / Kongres metrologa 2015, Zlatibor, 12.-15. oktobar 2015. godine. 2015;.
https://hdl.handle.net/21.15107/rcub_grafar_1298 .

Naod, S., Brajović, Ljiljana, Odalović, Oleg, Malović, Miodrag, Todorović, Goran, Gospavić, Radovan, "Gravitacioni gradiometri koji se koriste u satelitskim misijama - princip rada i merne karakteristike" in Zbornik radova / Kongres metrologa 2015, Zlatibor, 12.-15. oktobar 2015. godine (2015),
https://hdl.handle.net/21.15107/rcub_grafar_1298 .

TY  - JOUR
AU  - Malović, Miodrag
AU  - Brajović, Ljiljana
AU  - Mišković, Zoran
AU  - Sekara, Tomislav
PY  - 2015
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/701
AB  - An original wireless sensor network for vibration measurements was designed. Its primary purpose is modal analysis of vibrations of large structures. A number of experiments have been performed to evaluate the system, with special emphasis on the influence of different effects on simultaneity of data acquired from remote nodes, which is essential for modal analysis. One of the issues is that quartz crystal oscillators, which provide time reading on the devices, are optimized for use in the room temperature and exhibit significant frequency variations if operated outside the 20-30 degrees C range. Although much research was performed to optimize algorithms of synchronization in wireless networks, the subject of temperature fluctuations was not investigated and discussed in proportion to its significance. This paper describes methods used to evaluate data simultaneity and some algorithms suitable for its improvement in small to intermediate size ad-hoc wireless sensor networks exposed to varying temperatures often present in on-site civil engineering measurements.
PB  - Polish ACAD Sciences Committee Metrology and Res Equipment
T2  - Metrology and Measurement Systems
T1  - Simultaneity analysis in a wireless sensor network
EP  - 288
IS  - 2
SP  - 275
VL  - 22
DO  - 10.1515/mms-2015-0022
ER  - 

@article{
author = "Malović, Miodrag and Brajović, Ljiljana and Mišković, Zoran and Sekara, Tomislav",
year = "2015",
abstract = "An original wireless sensor network for vibration measurements was designed. Its primary purpose is modal analysis of vibrations of large structures. A number of experiments have been performed to evaluate the system, with special emphasis on the influence of different effects on simultaneity of data acquired from remote nodes, which is essential for modal analysis. One of the issues is that quartz crystal oscillators, which provide time reading on the devices, are optimized for use in the room temperature and exhibit significant frequency variations if operated outside the 20-30 degrees C range. Although much research was performed to optimize algorithms of synchronization in wireless networks, the subject of temperature fluctuations was not investigated and discussed in proportion to its significance. This paper describes methods used to evaluate data simultaneity and some algorithms suitable for its improvement in small to intermediate size ad-hoc wireless sensor networks exposed to varying temperatures often present in on-site civil engineering measurements.",
publisher = "Polish ACAD Sciences Committee Metrology and Res Equipment",
journal = "Metrology and Measurement Systems",
title = "Simultaneity analysis in a wireless sensor network",
pages = "288-275",
number = "2",
volume = "22",
doi = "10.1515/mms-2015-0022"
}

Malović, M., Brajović, L., Mišković, Z.,& Sekara, T.. (2015). Simultaneity analysis in a wireless sensor network. in Metrology and Measurement Systems
Polish ACAD Sciences Committee Metrology and Res Equipment., 22(2), 275-288.
https://doi.org/10.1515/mms-2015-0022

Malović M, Brajović L, Mišković Z, Sekara T. Simultaneity analysis in a wireless sensor network. in Metrology and Measurement Systems. 2015;22(2):275-288.
doi:10.1515/mms-2015-0022 .

Malović, Miodrag, Brajović, Ljiljana, Mišković, Zoran, Sekara, Tomislav, "Simultaneity analysis in a wireless sensor network" in Metrology and Measurement Systems, 22, no. 2 (2015):275-288,
https://doi.org/10.1515/mms-2015-0022 . .

TY  - CONF
AU  - Malović, Miodrag
AU  - Brajović, Ljiljana
AU  - Radić, V.
AU  - Lazarević, Luka
AU  - Popović, Zdenka
PY  - 2014
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1262
PB  - Elektrotehnički fakultet, Istočno Sarajevo
C3  - Zbornik radova / XIII međunarodni naučno-stručni simpozijum Infoteh-Jahorina 2014, Jahorina, Hotel Bistrica, 19-21. mart 2014.
T1  - Measurement of Sleepers Vibrations and Determination of Their Dynamic Deflection and Train Velocity
T1  - Merenje vibracija pružnih pragova i određivanje njihovog dinamičkog ugiba i brzine vozova
EP  - 17
SP  - 13
VL  - 13
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1262
ER  - 

@conference{
author = "Malović, Miodrag and Brajović, Ljiljana and Radić, V. and Lazarević, Luka and Popović, Zdenka",
year = "2014",
publisher = "Elektrotehnički fakultet, Istočno Sarajevo",
journal = "Zbornik radova / XIII međunarodni naučno-stručni simpozijum Infoteh-Jahorina 2014, Jahorina, Hotel Bistrica, 19-21. mart 2014.",
title = "Measurement of Sleepers Vibrations and Determination of Their Dynamic Deflection and Train Velocity, Merenje vibracija pružnih pragova i određivanje njihovog dinamičkog ugiba i brzine vozova",
pages = "17-13",
volume = "13",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1262"
}

Malović, M., Brajović, L., Radić, V., Lazarević, L.,& Popović, Z.. (2014). Measurement of Sleepers Vibrations and Determination of Their Dynamic Deflection and Train Velocity. in Zbornik radova / XIII međunarodni naučno-stručni simpozijum Infoteh-Jahorina 2014, Jahorina, Hotel Bistrica, 19-21. mart 2014.
Elektrotehnički fakultet, Istočno Sarajevo., 13, 13-17.
https://hdl.handle.net/21.15107/rcub_grafar_1262

Malović M, Brajović L, Radić V, Lazarević L, Popović Z. Measurement of Sleepers Vibrations and Determination of Their Dynamic Deflection and Train Velocity. in Zbornik radova / XIII međunarodni naučno-stručni simpozijum Infoteh-Jahorina 2014, Jahorina, Hotel Bistrica, 19-21. mart 2014.. 2014;13:13-17.
https://hdl.handle.net/21.15107/rcub_grafar_1262 .

Malović, Miodrag, Brajović, Ljiljana, Radić, V., Lazarević, Luka, Popović, Zdenka, "Measurement of Sleepers Vibrations and Determination of Their Dynamic Deflection and Train Velocity" in Zbornik radova / XIII međunarodni naučno-stručni simpozijum Infoteh-Jahorina 2014, Jahorina, Hotel Bistrica, 19-21. mart 2014., 13 (2014):13-17,
https://hdl.handle.net/21.15107/rcub_grafar_1262 .

TY  - JOUR
AU  - Brajović, Ljiljana
AU  - Malović, Miodrag
AU  - Popović, Zdenka
AU  - Lazarević, Luka
PY  - 2014
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/629
AB  - This paper describes testing of a wireless technique for measuring the actual sleeper vibrations and determination of their dynamic deflection based on the experimentally acquired acceleration data. Practical measurements of sleeper vibrations and calculation of displacements (deflections) along the track provide insight into the actual condition of layers below sleepers. The main goal was to develop the equipment for structural health monitoring as a basis for the track maintenance management.
T2  - Communications - Scientific Letters of the University of Zilina
T1  - Wireless system for sleeper vibrations measurement
EP  - 26
IS  - 4
SP  - 21
VL  - 16
UR  - https://hdl.handle.net/21.15107/rcub_grafar_629
ER  - 

@article{
author = "Brajović, Ljiljana and Malović, Miodrag and Popović, Zdenka and Lazarević, Luka",
year = "2014",
abstract = "This paper describes testing of a wireless technique for measuring the actual sleeper vibrations and determination of their dynamic deflection based on the experimentally acquired acceleration data. Practical measurements of sleeper vibrations and calculation of displacements (deflections) along the track provide insight into the actual condition of layers below sleepers. The main goal was to develop the equipment for structural health monitoring as a basis for the track maintenance management.",
journal = "Communications - Scientific Letters of the University of Zilina",
title = "Wireless system for sleeper vibrations measurement",
pages = "26-21",
number = "4",
volume = "16",
url = "https://hdl.handle.net/21.15107/rcub_grafar_629"
}

Brajović, L., Malović, M., Popović, Z.,& Lazarević, L.. (2014). Wireless system for sleeper vibrations measurement. in Communications - Scientific Letters of the University of Zilina, 16(4), 21-26.
https://hdl.handle.net/21.15107/rcub_grafar_629

Brajović L, Malović M, Popović Z, Lazarević L. Wireless system for sleeper vibrations measurement. in Communications - Scientific Letters of the University of Zilina. 2014;16(4):21-26.
https://hdl.handle.net/21.15107/rcub_grafar_629 .

Brajović, Ljiljana, Malović, Miodrag, Popović, Zdenka, Lazarević, Luka, "Wireless system for sleeper vibrations measurement" in Communications - Scientific Letters of the University of Zilina, 16, no. 4 (2014):21-26,
https://hdl.handle.net/21.15107/rcub_grafar_629 .

TY  - JOUR
AU  - Malović, Miodrag
AU  - Brajović, Ljiljana
AU  - Mišković, Zoran
AU  - Todorović, Goran
PY  - 2012
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/445
AB  - Laboratory prototype of a wireless sensor network (WSN) for vibrations measurements on buildings was developed. The system is comprised of sensor devices (nodes) each having main processor board, accelerometer board, batteries, radio modem, and optionally a liquid crystal display. Personal computer (PC) acts as a base station of the system. Sensor devices (nodes) are powered by rechargeable batteries. Each node spends most of its time in a sleep mode (low power consumption). They are awakened and synchronized by beacon signal from the base station, and then they perform measurements simultaneously during the predefined time interval, compress the data on spot, and send it to the base station for modal or other analysis. Embedded RTOS is specifically developed for this purpose, and allows different modes of operation, with large number of parameters, by varying which the results can be optimized for different applications. Star network topology is used, since accurate time stamping is critical for modal analysis application which is primary objective of this WSN. A number of presented measures have been taken to ensure synchronicity of results such as processors calibration using high precision frequency counter and testing of deviation of radio beacon signal detection time. Accelerometers have been tested for cross-axial sensitivity. Radio modems range (probability of packet transfer) has been tested in urban environment (strong interference) and coding of transmitted signals was applied in order to improve transfer efficiency. .
AB  - Nedestruktivno praćenje stanja građevinskih objekata se bazira na merenju vibracija objekata pri dinamičkim ispitivanjima ili u toku njihove eksploatacije. U ovu svrhu se sve više koriste mreže bežičnih senzora koje čine fleksibilan i jeftin merni sistem, jer nema razvlačenja kablova velikih dužina za povezivanje senzora. U ovom radu je opisan sistem za bežično merenje vibracija na objektima razvijen na Građevinskom fakultetu u Beogradu. Predstavljeni su struktura i karakteristike mernog sistema baziranog na elektronskim komponentama male potrošnje i originalnom softveru.
PB  - Savez inženjera i tehničara Srbije, Beograd
T2  - Tehnika
T1  - Vibrations measurement using wireless sensor network
T1  - Merenje vibracija mrežom bežičnih senzora
EP  - 889
IS  - 6
SP  - 883
VL  - 67
UR  - https://hdl.handle.net/21.15107/rcub_grafar_445
ER  - 

@article{
author = "Malović, Miodrag and Brajović, Ljiljana and Mišković, Zoran and Todorović, Goran",
year = "2012",
abstract = "Laboratory prototype of a wireless sensor network (WSN) for vibrations measurements on buildings was developed. The system is comprised of sensor devices (nodes) each having main processor board, accelerometer board, batteries, radio modem, and optionally a liquid crystal display. Personal computer (PC) acts as a base station of the system. Sensor devices (nodes) are powered by rechargeable batteries. Each node spends most of its time in a sleep mode (low power consumption). They are awakened and synchronized by beacon signal from the base station, and then they perform measurements simultaneously during the predefined time interval, compress the data on spot, and send it to the base station for modal or other analysis. Embedded RTOS is specifically developed for this purpose, and allows different modes of operation, with large number of parameters, by varying which the results can be optimized for different applications. Star network topology is used, since accurate time stamping is critical for modal analysis application which is primary objective of this WSN. A number of presented measures have been taken to ensure synchronicity of results such as processors calibration using high precision frequency counter and testing of deviation of radio beacon signal detection time. Accelerometers have been tested for cross-axial sensitivity. Radio modems range (probability of packet transfer) has been tested in urban environment (strong interference) and coding of transmitted signals was applied in order to improve transfer efficiency. ., Nedestruktivno praćenje stanja građevinskih objekata se bazira na merenju vibracija objekata pri dinamičkim ispitivanjima ili u toku njihove eksploatacije. U ovu svrhu se sve više koriste mreže bežičnih senzora koje čine fleksibilan i jeftin merni sistem, jer nema razvlačenja kablova velikih dužina za povezivanje senzora. U ovom radu je opisan sistem za bežično merenje vibracija na objektima razvijen na Građevinskom fakultetu u Beogradu. Predstavljeni su struktura i karakteristike mernog sistema baziranog na elektronskim komponentama male potrošnje i originalnom softveru.",
publisher = "Savez inženjera i tehničara Srbije, Beograd",
journal = "Tehnika",
title = "Vibrations measurement using wireless sensor network, Merenje vibracija mrežom bežičnih senzora",
pages = "889-883",
number = "6",
volume = "67",
url = "https://hdl.handle.net/21.15107/rcub_grafar_445"
}

Malović, M., Brajović, L., Mišković, Z.,& Todorović, G.. (2012). Vibrations measurement using wireless sensor network. in Tehnika
Savez inženjera i tehničara Srbije, Beograd., 67(6), 883-889.
https://hdl.handle.net/21.15107/rcub_grafar_445

Malović M, Brajović L, Mišković Z, Todorović G. Vibrations measurement using wireless sensor network. in Tehnika. 2012;67(6):883-889.
https://hdl.handle.net/21.15107/rcub_grafar_445 .

Malović, Miodrag, Brajović, Ljiljana, Mišković, Zoran, Todorović, Goran, "Vibrations measurement using wireless sensor network" in Tehnika, 67, no. 6 (2012):883-889,
https://hdl.handle.net/21.15107/rcub_grafar_445 .

TY  - JOUR
AU  - Malović, Miodrag
AU  - Brajović, Ljiljana
AU  - Mišković, Zoran
PY  - 2010
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/320
AB  - Development of communication technologies during last decade carried out possibility of application wireless sensor networks in many different areas. Recently frequently application of this technology in civil engineering is consequence of its economy and simplicity of installation, which provide possibility of monitoring of different parameters more flexible and possible at hard accessed locations. Paper deals with structure of wireless sensor network and in detail describe all components of those systems, as well as accompanying software and topology. Successful significant examples of applications in civil structure monitoring are presented, which illustrate po­ssibility of application in this, very important, area of civil engineering. Accelerated infrastructural development actualized research efforts in this area.
AB  - Razvoj komunikacionih tehnologija poslednje decenije otvorio je mogućnosti primene bežičnih senzorskih mreža u najrazličitijim oblastima. Sve učestalija primena ove tehnologije u građevinarstvu posledica je njihove ekonomičnosti i jednostavnosti instalacije, a osmatranje različitih veličina čini fleksibilnijim i omogućava registrovanje na teško dostupnim lokacijama. Rad tretira strukturu mreža bežičnih senzora, detaljno prikazujući sve komponente ovakvih sistema, kao i pratećeg softvera i njihovu topologiju. Prikazani su značajni primeri realizacije u monitoringu građevinskih konstrukcija, čime se ilustruju mogućnosti za primenu u ovoj, sve značajnijoj, oblasti građevinske delatnosti. Ubrzan infrastrukturni razvoj aktuelizuje inteziviranje istraživanja u ovoj oblasti.
PB  - Savez građevinskih inženjera Srbije, Beograd
T2  - Građevinski kalendar
T1  - Wireless sensor networks for civil structural monitoring
T1  - Primena bežičnih senzorskih mreža u monitoringu građevinskih konstrukcija
EP  - 232
IS  - 42
SP  - 201
UR  - https://hdl.handle.net/21.15107/rcub_grafar_320
ER  - 

@article{
author = "Malović, Miodrag and Brajović, Ljiljana and Mišković, Zoran",
year = "2010",
abstract = "Development of communication technologies during last decade carried out possibility of application wireless sensor networks in many different areas. Recently frequently application of this technology in civil engineering is consequence of its economy and simplicity of installation, which provide possibility of monitoring of different parameters more flexible and possible at hard accessed locations. Paper deals with structure of wireless sensor network and in detail describe all components of those systems, as well as accompanying software and topology. Successful significant examples of applications in civil structure monitoring are presented, which illustrate po­ssibility of application in this, very important, area of civil engineering. Accelerated infrastructural development actualized research efforts in this area., Razvoj komunikacionih tehnologija poslednje decenije otvorio je mogućnosti primene bežičnih senzorskih mreža u najrazličitijim oblastima. Sve učestalija primena ove tehnologije u građevinarstvu posledica je njihove ekonomičnosti i jednostavnosti instalacije, a osmatranje različitih veličina čini fleksibilnijim i omogućava registrovanje na teško dostupnim lokacijama. Rad tretira strukturu mreža bežičnih senzora, detaljno prikazujući sve komponente ovakvih sistema, kao i pratećeg softvera i njihovu topologiju. Prikazani su značajni primeri realizacije u monitoringu građevinskih konstrukcija, čime se ilustruju mogućnosti za primenu u ovoj, sve značajnijoj, oblasti građevinske delatnosti. Ubrzan infrastrukturni razvoj aktuelizuje inteziviranje istraživanja u ovoj oblasti.",
publisher = "Savez građevinskih inženjera Srbije, Beograd",
journal = "Građevinski kalendar",
title = "Wireless sensor networks for civil structural monitoring, Primena bežičnih senzorskih mreža u monitoringu građevinskih konstrukcija",
pages = "232-201",
number = "42",
url = "https://hdl.handle.net/21.15107/rcub_grafar_320"
}

Malović, M., Brajović, L.,& Mišković, Z.. (2010). Wireless sensor networks for civil structural monitoring. in Građevinski kalendar
Savez građevinskih inženjera Srbije, Beograd.(42), 201-232.
https://hdl.handle.net/21.15107/rcub_grafar_320

Malović M, Brajović L, Mišković Z. Wireless sensor networks for civil structural monitoring. in Građevinski kalendar. 2010;(42):201-232.
https://hdl.handle.net/21.15107/rcub_grafar_320 .

Malović, Miodrag, Brajović, Ljiljana, Mišković, Zoran, "Wireless sensor networks for civil structural monitoring" in Građevinski kalendar, no. 42 (2010):201-232,
https://hdl.handle.net/21.15107/rcub_grafar_320 .