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The electrical system is facing a dramatic transformation. A main trend is the digitalization of the grid that implements automation and monitoring concepts at every voltage level. The consequent growing role of data management is calling for new paradigms in the service implementation. This paper presents a cloud-based platform concept that enables an open structure for new energy services. The architecture...
Wireless sensor networks (WSNs) are typically used to measure physical quantities of their environment at locations characterized by poor accessibility and lacking of wired infrastructure. To extend the operational time, energy harvesting systems (EHSs) support the power supply by transforming environmental energy into electrical energy. In the best case, a self-sufficient supply of the sensor node...
This paper proposes the implementation of a low-cost and reliable multipurpose wireless sensor network framework. It has been designed to be easily customizable in order to adapt it to the particular application.
In the recent years, multi-channel Interferometric SAR (InSAR) techniques have proved to be effective in reconstructing the Digital Elevation Model (DEM) by unwrapping the interferometric phase. Commonly, multi-baseline or multi-frequency configurations are adopted for this aim. In this paper, the possibility of jointly exploiting multi-baseline and multi-frequency approaches for SAR interferometry...
Machine-to-Machine (M2M) communications have emerged as a new concept for the next generation of sensing and actuating systems. With the recent emergence of energy harvesting technologies, the current communication solutions have addressed the problem of controlling the data communication to regulate efficiently the energy consumption, aiming to avoid under and overuse of energy. However, these solutions...
In this paper an alternative method for evaluating the spatial uniform and isotropic electromagnetic field within a reverberating chamber (RC) is proposed. Experiments accomplished at the RC of the Università degli Studi di Napoli Parthenope, formerly Istituto Universitario Navale (IUN) confirm the soundness of the proposed model and its effectiveness from an operational point of view.
In several fields of application of wireless sensors networks (WSNs) the ability of estimating the position of a node with respect to a reference coordinate is a key feature. The most of the WSN applications involve indoor environments and low costs requirements, so the Global Position System cannot always assure a reliable operating and cheap solution. As a consequence, other methods have to be considered...
Indoor localization based on inertial sensors such as accelerometer, gyroscope and magnetometer, has gathered broad interest within the scientific community. This approach in fact does not require the installation of external devices since it relies on low-cost devices of common use, like smartphones, which are used both as measurement platform and user interface. In this paper we focus the attention...
Drones like helicopters use vertical oriented rotors to lift and navigate forward. Thanks to the use of modern flight controllers, they often can fly autonomously. Namely, the user can mark target points on a map to which the helicopter is driven by the software controller without any other interventions of the user. Once on the target, the helicopter performs the intended task, such as landing, catching...
We present a network of wireless ultra-low-power sensors with the main purpose of detecting the derailment of a freight car and alerting the engineer in the cab of the leading locomotive. Due to the lack of a power supply in freight cars, we plan to rely on energy scavenging from vibrations. This implies that the energy requirements of the system must be minimized, choosing ultra-low-power hardware...
Human activity is more than ever dependent on electronic systems. These devices are fed through the electrical grid, which in turn supplies multiple devices simultaneously. The normal operation of an equipment can produce quality events in the power bus that can lead others to fail. This justifies the need for a wireless network of sensors (WSN) spread through the electrical installation. In addition,...
The diversity of wireless technologies, connected to the Internet and the more powerful and smaller embedded devices, allows to encompass services to improve everyday activities around us through new applications and businesses. This context emerged with the Internet of Things (IoT), where different technologies connected with the Internet provide several applications to change people's lifestyle...
Within this manuscript a new application of Com-pressive Sensing (CS) in Magnetic Resonance Imaging field with the aim of jointly exploit multiple measurements is presented. At the present, in literature CS is exploited in order to allow image formation from a non fully sampled k-space signals, greatly reducing the acquisition time. What we propose is the exploitation of CS for achieving the so called...
Cross-domain resource and infrastructure federation has gained more and more attention in the fields of Cloud and Future Internet (FI) testbeds. But, interoperable monitoring data exchange across heterogeneous domains remains a challenge due to the variety and heterogeneity of the used tools and interfaces. Many efforts have been made to define common data models and protocols but are task or domain...
Recent years have witnessed an increased interest in Precision Time Protocol (PTP) in telecommunication networks, either as an alternative to Global Positioning System (GPS) or as synchronization back-up. To achieve node synchronization at the μs-level, very accurate measurements of time offsets are needed. However, unless PTP is fully supported throughout the network, timing packets may be subjected...
Due to the increasing interest of the emerging millimeter wave (mmWave) frequency band for application to cellular networks, new flexible and scalable approaches for their modeling, analysis and optimization are needed. Recently, a new approach has been proposed: it is based on the theory of point processes and it leverages tools from stochastic geometry for tractable system-level modeling, performance...
This paper presents a low cost approach for structural and seismic monitoring with the aim of developing an Early Warning System. The proposed architecture is based on a customized network of multi-sensor nodes equipped with inertial sensors and a microcontroller architecture aimed to signal processing and the management of data transfer. Results presented highlight the suitability of the developed...
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