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Evaluation de la fiabilité des réseaux de capteurs sans fils pour la détection en milieu naturel

Abstract : The objective of my thesis was to evaluate the reliability of wireless sensor networks (WSN) in natural settings. My evaluation takes into account the physical components of sensor nodes, photovoltaic (PV) cells, rechargeable and non-rechargeable batteries, communication and data transmission protocols, and elements necessary for effective detection, especially for the case of forest fires. The study first deals with the functioning of a WSN in nature by taking into account its energy consumption, and physical and functional failures to assess its reliability. Reliability is then compared between a PV-free (WSN) and PV- (PV-WSN) network under complex data exchange conditions. Finally, the evaluation of the reliability of the PV-WSN is carried out in the context of the detection and propagation of forest fires under the same conditions of data exchange. The main assumptions considered are: the WSN is structured randomly with one sink per cluster and identical sensors, environmental and orientation losses affect PV-cell recharge, the radio signal may be weakened by natural obstacles, fire propagation is uniform and elliptical, vegetation is homogeneous, and there is communication loss using the Dynamic Source Routing (DSR) protocol. A simulator was developed to carry out these assessments. The results obtained show the importance of physical failures in assessing reliability and extending WSN and PV-WSN lifetime
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Submitted on : Thursday, December 19, 2019 - 6:05:08 PM
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  • HAL Id : tel-02420320, version 1

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Rabih Kassan. Evaluation de la fiabilité des réseaux de capteurs sans fils pour la détection en milieu naturel. Electronique. Université de Technologie de Troyes, 2017. Français. ⟨NNT : 2017TROY0013⟩. ⟨tel-02420320⟩

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