TY  - JOUR
AU  - Aleksić, Stanko O.
AU  - Mitrović, Nebojša S.
AU  - Luković, Miloljub
AU  - Luković, Snežana
AU  - Nikolić, Nenad
PY  - 2021
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1397
AB  - Novel heat loss flowmeter for water consists of the small plastic housing and two NTC thick film segmented thermistors with reduced dimensions placed along the main axis. The segmented thermistors were printed using the modified nickel-manganese paste and sintered in air at 850 degrees C / 10 min in the conveyor furnace. The first thermistor Th-1 is cold and measures input water temperature and the second thermistor Th-2 is self-heated at constant voltage and measures water flow rate. A short switch mode operating cycle for the self-heating thermistor was introduced: 30s of self-heating from the initial state and after that 90s of natural cooling to the initial state. The self heating DC current in 30th second I-30 is recognized as the flowmeter response on stable water flow Q, while input water temperature T-w was used as a parameter. The flowmeter temperature range was divided in a few sub-ranges and adaptive DC voltage power supply (RCV) was introduced for each sub-range. The flowmeter measuring range and inaccuracy were compared with respective ones of other flowmeters.
PB  - IEEE-Inst Electrical Electronics Engineers Inc, Piscataway
T2  - IEEE Sensors Journal
T1  - Heat Loss Flowmeter for Water Based on Thick Film Thermistors in Power Save Regime
EP  - 206
IS  - 1
SP  - 199
VL  - 21
DO  - 10.1109/JSEN.2020.3015023
ER  - 

@article{
author = "Aleksić, Stanko O. and Mitrović, Nebojša S. and Luković, Miloljub and Luković, Snežana and Nikolić, Nenad",
year = "2021",
abstract = "Novel heat loss flowmeter for water consists of the small plastic housing and two NTC thick film segmented thermistors with reduced dimensions placed along the main axis. The segmented thermistors were printed using the modified nickel-manganese paste and sintered in air at 850 degrees C / 10 min in the conveyor furnace. The first thermistor Th-1 is cold and measures input water temperature and the second thermistor Th-2 is self-heated at constant voltage and measures water flow rate. A short switch mode operating cycle for the self-heating thermistor was introduced: 30s of self-heating from the initial state and after that 90s of natural cooling to the initial state. The self heating DC current in 30th second I-30 is recognized as the flowmeter response on stable water flow Q, while input water temperature T-w was used as a parameter. The flowmeter temperature range was divided in a few sub-ranges and adaptive DC voltage power supply (RCV) was introduced for each sub-range. The flowmeter measuring range and inaccuracy were compared with respective ones of other flowmeters.",
publisher = "IEEE-Inst Electrical Electronics Engineers Inc, Piscataway",
journal = "IEEE Sensors Journal",
title = "Heat Loss Flowmeter for Water Based on Thick Film Thermistors in Power Save Regime",
pages = "206-199",
number = "1",
volume = "21",
doi = "10.1109/JSEN.2020.3015023"
}

Aleksić, S. O., Mitrović, N. S., Luković, M., Luković, S.,& Nikolić, N.. (2021). Heat Loss Flowmeter for Water Based on Thick Film Thermistors in Power Save Regime. in IEEE Sensors Journal
IEEE-Inst Electrical Electronics Engineers Inc, Piscataway., 21(1), 199-206.
https://doi.org/10.1109/JSEN.2020.3015023

Aleksić SO, Mitrović NS, Luković M, Luković S, Nikolić N. Heat Loss Flowmeter for Water Based on Thick Film Thermistors in Power Save Regime. in IEEE Sensors Journal. 2021;21(1):199-206.
doi:10.1109/JSEN.2020.3015023 .

Aleksić, Stanko O., Mitrović, Nebojša S., Luković, Miloljub, Luković, Snežana, Nikolić, Nenad, "Heat Loss Flowmeter for Water Based on Thick Film Thermistors in Power Save Regime" in IEEE Sensors Journal, 21, no. 1 (2021):199-206,
https://doi.org/10.1109/JSEN.2020.3015023 . .

TY  - JOUR
AU  - Aleksić, Stanko O.
AU  - Mitrović, Nebojša S.
AU  - Luković, Miloljub
AU  - Veljović-Jovanović, Sonja
AU  - Luković, Snežana
AU  - Nikolić, Maria Vesna
AU  - Aleksić, Obrad
PY  - 2018
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1168
AB  - A new ground temperature profile sensor comprising of a row of thermistors enables a large number of equidistantly arranged measuring points. The row of thermistors was formed using a group of negative temperature coefficient thick film segmented thermistors connected in series. After that calibration of the DC thermistor resistance R was performed at room temperature and the sensor was placed in a hole drilled on the lawn. DC resistances R of the row of thermistors were measured versus depth z as a parameter and converted to actual temperature T(z) in the ground using the Steinhart-Hart equation. The temperature profile of the ground depending on deepness z and time t as a function T(t, z) was measured on different days during one year in the early morning and in the afternoon. The temperature at the ground surface was compared with the temperature of the deepest sensor point in the ground. Thermal diffusivity D of the ground was determined using measured data T(t, z) in the periods of steady ground temperatures. The new ground temperature profile sensor was realized to investigate the correlation between air and ground temperature, observation of ground temperature profile changes and heat exchange (heat transfer, diffusion, gradient, and heat flow direction) through the ground top layer and finally humidity estimation versus deepness.
PB  - IEEE-Inst Electrical Electronics Engineers Inc, Piscataway
T2  - IEEE Sensors Journal
T1  - A Ground Temperature Profile Sensor Based on NTC Thick Film Segmented Thermistors: Main Properties and Applications
EP  - 4421
IS  - 11
SP  - 4414
VL  - 18
DO  - 10.1109/JSEN.2018.2820123
ER  - 

@article{
author = "Aleksić, Stanko O. and Mitrović, Nebojša S. and Luković, Miloljub and Veljović-Jovanović, Sonja and Luković, Snežana and Nikolić, Maria Vesna and Aleksić, Obrad",
year = "2018",
abstract = "A new ground temperature profile sensor comprising of a row of thermistors enables a large number of equidistantly arranged measuring points. The row of thermistors was formed using a group of negative temperature coefficient thick film segmented thermistors connected in series. After that calibration of the DC thermistor resistance R was performed at room temperature and the sensor was placed in a hole drilled on the lawn. DC resistances R of the row of thermistors were measured versus depth z as a parameter and converted to actual temperature T(z) in the ground using the Steinhart-Hart equation. The temperature profile of the ground depending on deepness z and time t as a function T(t, z) was measured on different days during one year in the early morning and in the afternoon. The temperature at the ground surface was compared with the temperature of the deepest sensor point in the ground. Thermal diffusivity D of the ground was determined using measured data T(t, z) in the periods of steady ground temperatures. The new ground temperature profile sensor was realized to investigate the correlation between air and ground temperature, observation of ground temperature profile changes and heat exchange (heat transfer, diffusion, gradient, and heat flow direction) through the ground top layer and finally humidity estimation versus deepness.",
publisher = "IEEE-Inst Electrical Electronics Engineers Inc, Piscataway",
journal = "IEEE Sensors Journal",
title = "A Ground Temperature Profile Sensor Based on NTC Thick Film Segmented Thermistors: Main Properties and Applications",
pages = "4421-4414",
number = "11",
volume = "18",
doi = "10.1109/JSEN.2018.2820123"
}

Aleksić, S. O., Mitrović, N. S., Luković, M., Veljović-Jovanović, S., Luković, S., Nikolić, M. V.,& Aleksić, O.. (2018). A Ground Temperature Profile Sensor Based on NTC Thick Film Segmented Thermistors: Main Properties and Applications. in IEEE Sensors Journal
IEEE-Inst Electrical Electronics Engineers Inc, Piscataway., 18(11), 4414-4421.
https://doi.org/10.1109/JSEN.2018.2820123

Aleksić SO, Mitrović NS, Luković M, Veljović-Jovanović S, Luković S, Nikolić MV, Aleksić O. A Ground Temperature Profile Sensor Based on NTC Thick Film Segmented Thermistors: Main Properties and Applications. in IEEE Sensors Journal. 2018;18(11):4414-4421.
doi:10.1109/JSEN.2018.2820123 .

Aleksić, Stanko O., Mitrović, Nebojša S., Luković, Miloljub, Veljović-Jovanović, Sonja, Luković, Snežana, Nikolić, Maria Vesna, Aleksić, Obrad, "A Ground Temperature Profile Sensor Based on NTC Thick Film Segmented Thermistors: Main Properties and Applications" in IEEE Sensors Journal, 18, no. 11 (2018):4414-4421,
https://doi.org/10.1109/JSEN.2018.2820123 . .

TY  - JOUR
AU  - Aleksić, Obrad
AU  - Nikolić, Maria Vesna
AU  - Luković, Miloljub
AU  - Aleksić, Stanko O.
AU  - Nikolić, Pantelija M.
PY  - 2013
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/681
AB  - A simple thermal sensor system was designed for measuring water flow in the water mains using the heat loss principle with a NTC thick film segmented thermistor as a self-heating sensor. Thick film segmented thermistors were screen printed on alumina substrate. NTC thermistor paste was formed of very fine Cu0.2Ni0.5Zn1.0Mn1.3O4 powder obtained by a combined mechanical activation/thermal treatment process, an organic vehicle and glass frit. The thermal sensor system was analyzed in the static and dynamic regime. A range constant voltage power supply was defined in the range 9-19 V for input water temperatures of 30-2 degrees C, maintaining a supply voltage in steps of 2 V for a change in 5 degrees C of input water temperature. This enables optimal operating power, i.e. heat generation on the self-heating thermistor. Measured calibration curves for different input water temperatures and input water flow rates were modeled, enabling interpolation of additional calculated curves to cover a wide range of input water temperatures.
PB  - Elsevier Science Sa, Lausanne
T2  - Sensors and Actuators A-Physical
T1  - Analysis and optimization of a thermal sensor system for measuring water flow
EP  - 376
SP  - 371
VL  - 201
DO  - 10.1016/j.sna.2013.07.035
ER  - 

@article{
author = "Aleksić, Obrad and Nikolić, Maria Vesna and Luković, Miloljub and Aleksić, Stanko O. and Nikolić, Pantelija M.",
year = "2013",
abstract = "A simple thermal sensor system was designed for measuring water flow in the water mains using the heat loss principle with a NTC thick film segmented thermistor as a self-heating sensor. Thick film segmented thermistors were screen printed on alumina substrate. NTC thermistor paste was formed of very fine Cu0.2Ni0.5Zn1.0Mn1.3O4 powder obtained by a combined mechanical activation/thermal treatment process, an organic vehicle and glass frit. The thermal sensor system was analyzed in the static and dynamic regime. A range constant voltage power supply was defined in the range 9-19 V for input water temperatures of 30-2 degrees C, maintaining a supply voltage in steps of 2 V for a change in 5 degrees C of input water temperature. This enables optimal operating power, i.e. heat generation on the self-heating thermistor. Measured calibration curves for different input water temperatures and input water flow rates were modeled, enabling interpolation of additional calculated curves to cover a wide range of input water temperatures.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Sensors and Actuators A-Physical",
title = "Analysis and optimization of a thermal sensor system for measuring water flow",
pages = "376-371",
volume = "201",
doi = "10.1016/j.sna.2013.07.035"
}

Aleksić, O., Nikolić, M. V., Luković, M., Aleksić, S. O.,& Nikolić, P. M.. (2013). Analysis and optimization of a thermal sensor system for measuring water flow. in Sensors and Actuators A-Physical
Elsevier Science Sa, Lausanne., 201, 371-376.
https://doi.org/10.1016/j.sna.2013.07.035

Aleksić O, Nikolić MV, Luković M, Aleksić SO, Nikolić PM. Analysis and optimization of a thermal sensor system for measuring water flow. in Sensors and Actuators A-Physical. 2013;201:371-376.
doi:10.1016/j.sna.2013.07.035 .

Aleksić, Obrad, Nikolić, Maria Vesna, Luković, Miloljub, Aleksić, Stanko O., Nikolić, Pantelija M., "Analysis and optimization of a thermal sensor system for measuring water flow" in Sensors and Actuators A-Physical, 201 (2013):371-376,
https://doi.org/10.1016/j.sna.2013.07.035 . .