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Recent reports have indicated that driver fatigue is one of the main causes in vehicle accidents leading to traffic fatalities and severe injuries. Therefore, developing fatigue driving monitoring system is of outmost importance to avoid fatigue-related accidents. Electroencephalogram (EEG)-based continuous monitoring system is one of the effective ways to predict both psychological and physiological...
Recent proposals enhances Wireless Sensor Networks (WSNs) with Software Defined Networking (SDN) practices, introducing new innovative network control strategies and protocols based on a central control logic, i.e., enabling WSNs as crucial facilities for the Internet of Things (IoT). In this direction, we demonstrate CORAL-SDN, an SDN solution for WSNs which: (i) uses intelligent centralized control...
Topology control is a crucial process for an efficient operation of a Wireless Sensor Network (WSN). The usage of WSNs in the Internet of Things (IoT) emerges new research challenges and novel applications. Recent WSNs proposals enhanced with Software Defined Networking (SDN) practices introduce new innovative network control strategies and protocols based on central control logic. This paper introduces...
This project will present a wireless sensors network. Each sensor node measures noise and CO2 pollution levels inside a specific urban area and a coordinator node stores these measurements in a database made with Java. Finally the obtained results are presented.
This paper proposes a distributed filtering scheme over sensor networks with topology switching and topology-dependent event-triggered transmission schemes. A new monitoring mechanism is introduced to identify the topology switching instants, and the system output is sampled by sensors when the network topology switches. Based on the time-varying sampled-outputs, a group of distributed topology-dependent...
It has been found that almost all routing protocols can induce network congestion due to control message complexity. To overcome this overhead various optimization processes are used. One such process is gossiping, where each node forwards a message with some probability, to reduce the overhead of the routing protocols. In this paper, we show how gossiping can be used to improve the performance of...
Millimeter wave communication shows promise in realizing next generation wireless sensor networks for bandwidth demanding applications. Despite its support of multi Gbps data rates, MmWaves requires unobstructed line-of-sight and suffers from heavy path losses. Overcoming these in complex 3D environments requires sectored antenna arrays with narrow beam widths and adaptive beamforming. Therefore,...
This paper investigates distributed fault detection of wireless sensor networks with a class of faulty sensor node, fault source isolation and networked communication topology accommodation design issue considering filtering performance. The wireless sensor network in this paper is composed of spatially placed sensors which has a changeable networked communication topology, different state-space representations...
Ego-network concept has been systematically studied, since this kind of network employs only locally available information to analyze its structure. Degree, closeness, and betweenness are widely studied centrality measures. Among the three measures presented, betweenness centrality in ego-networks is the most used in several fields such as Wireless Mesh Networks, Wireless Sensor Networks, and Delay...
We focus on the topology control algorithm in Software-Defined Sensor Networks (SDSNs) and propose a robot-assisted sink nodes relocation algorithm based on the Markov chain. Firstly, by using the software-defined architecture, sensor nodes and network topology can be deployed and updated by the controller which provides global network information and centralized management in real time. Then robot-assisted...
A communication protocol for fog computing should be efficient, lightweight and customizable. In this work we focus in a communication protocol for fog nodes composed of wireless sensors, which are spatially distributed autonomous sensors monitoring physical or environmental conditions. Problems with data congestion and limited physical resources are common in these networks. For the optimization...
This work discusses the concurrent applications of data collection and reconfiguration, and proposes a novel reconfiguration scheme during data collection. The proposed scheme incorporates the advantages of both proactive and reactive protocols into one system: using proactive protocol to collect continuous data and reactive protocol to reconfigure each remote node of the network. In addition, three...
Wireless communication systems can be used to support a lot of industrial applications and much effort has been done to design solutions for this scenario. Actually, an important issue when designing such solutions is the performance evaluation, which requires proper resources for accurate results. This paper then proposes an experimental platform where the devices communicate via wireless and wire...
The paper presents the design and implementation of an integrated wireless network that support to the multiparametric geophysical monitoring network of the Campi Flegrei volcanic area. The wireless network is equipped with a tool for real-time monitoring and fault detection. The enhancement of the transmission system with respect to the previously existing one has been realized in view of the increased...
This paper presents a case study of wireless sensor network (WSN) system for remote soil moisture monitoring. The development of this system is driven by the needs for having realtime data collection and remote monitoring access capabilities which are lacking in the conventional soil monitoring techniques. Our proposed system is developed using commercially available IRIS motes based on the IEEE 802...
Smart transportation is one of the essential components of smart cities that involves sensing traffic and pedestrians. Wireless Sensor Networks (WSN) have extensively been utilized over the years for sensing and data transfer in diverse structural deployments including mesh, ad hoc and hierarchical layouts. Several applications of WSN may involve placing the nodes in a linear topology, constituting...
This paper compares the energy consumption used for communication in the special case of a wireless sensor network that is deployed linearly over a long distance to monitor assets such as transmission lines or pipelines. A model for energy consumption is developed based on a suitable network architecture for a linear wireless sensor network (WSN). Using the model, the energy consumption of networks...
Graph filters, which are considered as the workhorses of graph signal analysis in the emerging field of signal processing on graphs, are useful for many applications such as distributed estimation in wireless sensor networks. Many of these tasks are based on basic distributed operators such as consensus, which are carried out by sensor devices under limited energy supply. To cope with the energy constraints,...
Linear Wireless Sensor Networks (LWSN) are a sub-case of Wireless Sensor Networks where nodes are roughly located through multiple lines. They can be used to monitor many real-life infrastructure — e.g. roads, pipelines-or natural entities such as rivers. Classical network solutions are mostly inefficient on LWSN because these topologies — a tree with very long branches-are often a worst-case scenario...
Tree is a widely used topology for Wireless Sensor Networks (WSNs). As Time Division Multiple Access (TDMA) eliminates collisions, it is a preferred channel access mechanism. Often multiple sinks are deployed in WSNs. Use of multiple sinks provides fault tolerance and load balancing. In tree based networks, every sink becomes root of exactly one tree. When node deployment is not uniform across the...
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