31 January 2016

Implementing a sensor network for monitoring drought indicators

Abstract

3

 Nowadays, the convergence of advanced technologies will allow a progress towards an integrated observation of terrestrial phenomena such as drought. Data collected by wireless sensor networks in situ, validated according to independent measurements, will establish an important source of information to enhance the observations and satellite estimations. The merging of these data in a GIS system will improve the Geospatial data infrastructure in order to allow making decisions in the context of sustainable development of natural information resources, remote environments, hazards and disasters.

Maps derived from satellite data and wireless sensor networks (WSN) deployed at strategic locations monitor the phenomenon of drought, in space and in time, without performing any work on the ground. This study involves the implementation of a sensor network and the establishment of a database of spatio temporal data communicating with a web mapping application to a real-time self-monitoring that operates 24 hours per day, 7 days per week of index parameters of determinations. Seven environmental parameters are used, which are: air temperature, humidity, precipitation, wind speed, soil moisture at three depths, soil temperature at two depths, solar radiation. The developed interface allows viewing statistics and graphs for each indicator, accessing, manipulating and exporting data and controlling the operation of the sensors in real time. It also facilitates the integration of data/metadata sensors in situ geospatial infrastructure of online data. In perspective, we aim to develop methods that help merging and integrating data in situ and remote sensing in models that generate valid information.

KEYWORDS:WSN,DatabaseSpatio-Temporal,GIS WebMapping ,Indicator of drought

Writer

Walid FANTAZI

Walid FANTAZI1

Ezzedine TAHAR2

Zoubeida BARGAOUI3

1Université de Tunis El Manar Ecole Nationale d’Ingénieurs de Tunis

2Université de Tunis El Manar Ecole Nationale d’Ingénieurs de Tunis

3Université de Tunis El Manar Ecole Nationale d’Ingénieurs de Tunis

Sys Com laboratory

Sys Com laboratory

LMHE laboratory

 

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