Next Article in Journal
Standardization of Fatigue Characteristics of Cement-Treated Aggregate Base Materials under Different Stress States
Previous Article in Journal
Preventive Effect of Lactobacillus Plantarum CQPC10 on Activated Carbon Induced Constipation in Institute of Cancer Research (ICR) Mice
Article Menu
Issue 9 (September) cover image

Export Article

Open AccessArticle
Appl. Sci. 2018, 8(9), 1499; https://doi.org/10.3390/app8091499

Comparison between Capacitive and Microstructured Optical Fiber Soil Moisture Sensors

1
Deptment of Electrical and Electronic Engineering, Universidad Pública de Navarra, Campus Arrosadia, 31006 Pamplona, Spain
2
Institute of Smart Cities (ISC), and IDISNA, Campus Arrosadia, 31006 Pamplona, Spain
3
Department of Projects and Rural Engineering, IS-FOOD Institute (Innovation & Sustainable Development in Food Chain), Public University of Navarre, Campus de Arrosadía, 31006 Pamplona, Spain
4
Institute de Recherche, Univ. Limoges, CNRS, XLIM, UMR 7252, F-87000 Limoges, France
*
Author to whom correspondence should be addressed.
Received: 20 July 2018 / Revised: 20 August 2018 / Accepted: 27 August 2018 / Published: 1 September 2018
(This article belongs to the Section Computer Science and Electrical Engineering)
Full-Text   |   PDF [3426 KB, uploaded 1 September 2018]   |  

Abstract

Soil moisture content has always been an important parameter to control because it is a deterministic factor for site-specific irrigation, seeding, transplanting, and compaction detection. In this work, a discrete sensor that is based on a SnO2–FP (Fabry-Pérot) cavity is presented and characterized in real soil conditions. As far as authors know, it is the first time that a microstructured optical fiber is used for real soil moisture measurements. Its performance is compared with a commercial capacitive soil moisture sensor in two different soil scenarios for two weeks. The optical sensor shows a great agreement with capacitive sensor’s response and gravimetric measurements, as well as a fast and reversible response; moreover, the interrogation technique allows for several sensors to be potentially multiplexed, which offers the possibility of local measurements instead of volumetric: it constitutes a great tool for real soil moisture monitoring. View Full-Text
Keywords: photonic crystal fiber; microstructured optical fiber; fiber sensor; humidity sensing; soil moisture photonic crystal fiber; microstructured optical fiber; fiber sensor; humidity sensing; soil moisture
Figures

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Lopez Aldaba, A.; Lopez-Torres, D.; Campo-Bescós, M.A.; López, J.J.; Yerro, D.; Elosua, C.; Arregui, F.J.; Auguste, J.-L.; Jamier, R.; Roy, P.; López-Amo, M. Comparison between Capacitive and Microstructured Optical Fiber Soil Moisture Sensors. Appl. Sci. 2018, 8, 1499.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Appl. Sci. EISSN 2076-3417 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top