Title :
Precise Moisture Monitoring for Various Soil Types Using Handheld Microwave-Sensor Meter
Author :
Kok Yeow You ; Chia Yew Lee ; Yi Lung Then ; Sheau Huey Chen Chong ; Li Ling You ; Abbas, Zia ; Ee Meng Cheng
Author_Institution :
Commun. Eng. Dept., Univ. Teknol. Malaysia, Skudai, Malaysia
Abstract :
A handheld microwave reflectometer-sensor system is developed to operate from 1.35 to 1.95 GHz and used to measure volumetric and gravimetric moisture content in various types of soils from 0% to 45%. A small monopole driver from coaxial line is buried into the soil, and its reflected voltage is measured and correlated with corresponding soil moisture content obtained from oven dying method. The measured reflected voltage is dependent on the nonlinear change of dielectric properties of the soil with the moisture content.
Keywords :
UHF detectors; geophysical equipment; gravimeters; microwave detectors; moisture measurement; soil; coaxial line; dielectric properties; frequency 1.35 GHz to 1.95 GHz; gravimetric moisture content measurement; handheld microwave reflectometer-sensor system; handheld microwave-sensor meter; monopole driver; oven dying method; precise moisture monitoring; soil moisture content; volumetric moisture content measurement; Microwave theory and techniques; Moisture; Moisture measurement; Probes; Soil; Soil measurements; Voltage measurement; Frequency domain reflectometry; RF handheld reflectometer; monopole sensor; reflected voltage; relative permittivity of soil; soil moisture;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2013.2253318
