Application of a Monopole Antenna Probe with an Optimized Flange Diameter for TDR Soil Moisture Measurement
Artykuł w czasopiśmie
MNiSW
100
Lista 2021
| Status: | |
| Autorzy: | Majcher Jacek, Kafarski Marcin, Wilczek Andrzej, Woszczyk Aleksandra, Szypłowska Agnieszka, Lewandowski Arkadiusz, Szerement Justyna, Skierucha Wojciech |
| Dyscypliny: | |
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| Rok wydania: | 2020 |
| Wersja dokumentu: | Elektroniczna |
| Język: | angielski |
| Numer czasopisma: | 8 |
| Wolumen/Tom: | 20 |
| Numer artykułu: | 2374 |
| Strony: | 1 - 13 |
| Impact Factor: | 3,576 |
| Web of Science® Times Cited: | 14 |
| Scopus® Cytowania: | 18 |
| Bazy: | Web of Science | Scopus | DOAJ |
| Efekt badań statutowych | NIE |
| Finansowanie: | This work has been supported by the National Centre for Research and Development, Poland, grant no. BIOSTRATEG3/ 343547/8/NCBR/2017. |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | TAK |
| Licencja: | |
| Sposób udostępnienia: | Otwarte czasopismo |
| Wersja tekstu: | Ostateczna wersja autorska |
| Czas opublikowania: | W momencie opublikowania |
| Data opublikowania w OA: | 22 kwietnia 2020 |
| Abstrakty: | angielski |
| Soil volumetric water content (θ) is a parameter describing one of the most important factors conditioning proper plant growth. Monitoring soil moisture is of particular importance in the rational use of water resources for irrigation, especially during periods of water scarcity. This paper presents a method of measuring soil moisture in the vicinity of the plant root system by means of a probe designed to be mounted on a mobile device used for precise plant irrigation. Due to the specific field conditions of the measurement, the design of the probe was proposed as a monopole antenna. Electromagnetic simulations of the probe were carried out with Ansys HFSS software to optimise its dimensions. Then a prototype of the probe was manufactured to conduct laboratory measurements with the use of a vector network analyser (VNA) working in the 20 kHz to 8 GHz frequency range. The VNA analyser was configured to work in the time-domain reflectometry (TDR) mode. From measurements of the time distance between reflections from the probe’s elements it is possible to calculate the bulk dielectric permittivity of the soil surrounding the probe. Next, based on commonly used soil moisture dielectric calibrations one can determine θ of the soil sample. The paper presents simulation results and laboratory tests of an antenna probe. Due to its tough and durable design, this type of probe gives the possibility of easy application in field conditions, which makes it especially suitable for mechanically demanding measurement systems. As the sensitivity zone is comparatively large, this probe is well-suited to measuring soil moisture in the vicinity of the plant root system. |
