Fiber optic thermo-hygrometers for soil moisture and temperature measurements: the SFORI project

Leone, Marco; Consales, M.; Laudati, A.; Mennella, F.; Cutolo, A.; Cusano, A.

doi:10.1117/12.2194756

Cited by 3 publications

(4 citation statements)

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“…The first investigated version of soil moisture sensor relies on the integration of a FBG-based thermo-hygrometer [ 26 ] with a micro-porous polymeric membrane (Fluoropore (TM) 90 mm PTFE, Merck Millipore, Billerica, MA, USA) [ 25 ] that avoids direct contact of the FBGs with the soil and liquid water, but allows water in the gaseous phase to pass through it and interact with the FBG hygrometer.…”

Section: Preliminary Test Exploiting the First Version Of Vwc Sensmentioning

confidence: 99%

“…With reference to Figure 1 , our fiber optic thermo-hygrometers is composed of two FBGs, the first one coated with a water sensitive polyimide (PI) overlay for relative humidity ( RH ) measurement and the other one laid bare for temperature measurement (and thermal compensation) [ 25 , 26 ].…”

Section: Preliminary Test Exploiting the First Version Of Vwc Sensmentioning

confidence: 99%

“…In 2014, our research group was involved in the development of a new generation of fiber Bragg grating (FBGs)-based soil moisture and temperature sensors for irrigation purposes [ 25 ]. The developed device was realized by the integration, inside a customized aluminum protection package, of a FBG-based thermo-hygrometer with a polymer micro-porous membrane.…”

Section: Introductionmentioning

confidence: 99%

“…The developed device was realized by the integration, inside a customized aluminum protection package, of a FBG-based thermo-hygrometer with a polymer micro-porous membrane. This membrane avoids the FBGs to be in direct contact with water in the liquid phase, while allowing water in the gaseous phase to pass through and interact with the FBG sensitive overlay [ 25 ].…”

Section: Introductionmentioning

confidence: 99%

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Fiber Optic Thermo-Hygrometers for Soil Moisture Monitoring

Leone

Principe

Consales

et al. 2017

Sensors

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This work deals with the fabrication, prototyping, and experimental validation of a fiber optic thermo-hygrometer-based soil moisture sensor, useful for rainfall-induced landslide prevention applications. In particular, we recently proposed a new generation of fiber Bragg grating (FBGs)-based soil moisture sensors for irrigation purposes. This device was realized by integrating, inside a customized aluminum protection package, a FBG thermo-hygrometer with a polymer micro-porous membrane. Here, we first verify the limitations, in terms of the volumetric water content (VWC) measuring range, of this first version of the soil moisture sensor for its exploitation in landslide prevention applications. Successively, we present the development, prototyping, and experimental validation of a novel, optimized version of a soil VWC sensor, still based on a FBG thermo-hygrometer, but able to reliably monitor, continuously and in real-time, VWC values up to 37% when buried in the soil.

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Section: Preliminary Test Exploiting the First Version Of Vwc Sensmentioning

confidence: 99%

Section: Preliminary Test Exploiting the First Version Of Vwc Sensmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations