Browsing by Author "Djouabri, Abderrezak"

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    Evaluating autonomous-energy-harvesting device lifetime for the internet of medical things with a petri net formulation considering battery SoH
    (2022) Oukas, Nourredine; Djouabri, Abderrezak; Boulif, Menouar
    During charging-discharging operations, the batteries of the Internet of Things (IoT) devices are subject to a depletion that should be considered when predicting their lifetime. This paper proposes a new modeling for the IoT autonomous devices (AD) using Colored Generalized Stochastic Petri Nets (CGSPN). The ADs we consider are equipped with an energy harvesting system, and use a wireless link to connect with their neighbors. The CGSPN formulation models AD functionalities, and evaluates their impact on the battery lifetime by considering its state of health (SoH). The conducted analysis shows the ability of the proposed model to predict the ADs’ lifetime which is very critical for medical applications
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    A fluid approach to model and assess the energy level of autonomous devices in IoT with solar energy harvesting capability
    (IEEE, 2022) Oukas, Nourredine; Djouabri, Abderrezak; Arab, Karima; Helal, Mira
    This paper proposes new modeling of autonomous devices in Internet of Things (IoT) using extended Hybrid Petri nets (xHPN). This formulation uses the continuous concept of battery recharge and discharge instead quantification principle. We consider that the autonomous device is equipped with solar energy harvesting (SEH) system and deployed in diverse zones of Algeria with different photovoltaic panel orientations. To conserve energy, we adopt the famous dual sleeping mechanism. The conducted analysis proves that the proposed model is more suitable for the energy assessment of such devices